СВЕТОПРОВОДЯЩИЙ ОПТИЧЕСКИЙ ЭЛЕМЕНТ

Светопроводящий оптический элемент, который включает в себя, по крайней мере, одно светоподающее основание, которое снабжено, по крайней мере, двумя поверхностями, расположенными параллельно друг другу, оптические средства, которые используются для ввода в основание лучей света при помощи полного внутреннего отражения таким образом, чтобы свет попадал на одну из указанных выше поверхностей, набор одной или более частично отражающих поверхностей, расположенных внутри основания, поверхности которых не параллельны вышеупомянутым поверхностям основания, при этом частично отражающие поверхности являются плоскими селективно отражающими под углом поверхностями, которые часть лучей пересекают несколько раз, перед тем как выйти из основания в нужном направлении. Технический результат: обеспечение широкого поля обзора и увеличение области перемещения глаз при неподвижном устройстве. 43 з.п. ф-лы, 36 ил.

СВЕТОВОДЫ С ПОКРЫТИЕМ, ПОДЛЕЖАЩИЕ ИСПОЛЬЗОВАНИЮ В ВОДЕ

Изобретение относится к световодному элементу и к системе противодействия биообрастанию, содержащей такой световодный элемент. Технический результат - повышение эффективности предотвращения биообрастания. Световодный элемент (1300) содержит световод (300), который содержит первую поверхность (301) световода и вторую поверхность (302) световода, между которыми находится проницаемый для УФ-излучения материал (305). Световод (300) содержит силикон, причем световодный элемент (1300) дополнительно содержит первый слоеный элемент (30), проницаемый для УФ-излучения, находящийся в контакте с первой поверхностью (301) световода, и/или второй слоеный элемент (130), находящийся в контакте со второй поверхностью (302) световода. Первый слоеный элемент содержит оптический слой, который имеет показатель преломления меньший, чем у воды, для ультрафиолетового излучения. 5 н. и 10 з.п. ф-лы, 3 ил.

СВЕТОПРОВОДЯЩИЙ ОПТИЧЕСКИЙ ЭЛЕМЕНТ

... 1. Оптический прибор включает в себя светоподающее основание, которое снабжено, по крайней мере, двумя главными поверхностями, расположенными параллельно друг к другу и их граням; оптические средства соединения лучей света на вышеупомянутой поверхности путем полного внутреннего отражения, и, по крайней мере, одна частично отражающая поверхность, расположенная на вышеупомянутом основании, поверхность которого непараллельна к вышеупомянутым главным поверхностям основания, характеризуется лучами света, соединенного на основании, которое имеет тот же безосевой угол, который пересекает частично отражаемые поверхности под двумя произвольными углами. 2. Прибор по п.1, отличающийся тем, что лучи соединенного света пересекают частично отражаемую поверхность, по крайней мере, два раза под двумя произвольными углами. 3. Прибор по п.1, отличающийся тем, что один из двух произвольных углов значительно меньше другого. 4. Прибор по п.1, отличающийся тем, что частично отражаемая поверхность имеет меньшее ...

ОПТИЧЕСКОЕ УСТРОЙСТВО ДЛЯ ИСТОЧНИКОВ СВЕТА СВЕТОИЗЛУЧАЮЩИХ ДИОДОВ

... 1. Оптическое устройство для целевого воспроизведения света, излучаемого источниками света СИД, содержащее, по меньшей мере, две отдельные части (детали), из которых одна является первой отдельной частью (10) в виде твердого волновода, а дополнительная отдельная часть (10”) служит для соединения с источником света СИД, отличающееся тем, что в декартовой системе координат первая отдельная оптическая часть имеет продольную протяженность в направлении y, которая меньше или равна ее продольной протяженности в направлении z и меньше или равна ее продольной протяженности в направлении х, и огибающая, проецируемая на плоскость х-y, первой отдельной оптической части (10) в принципе дает прямоугольник и, от плоскости х-y, первая отдельная оптическая часть (10) сужается в направлении z до максимум ј наибольшей ширины, измеренной вдоль y (Вy, max). ! 2. Оптическое устройство по п.1, отличающееся тем, что боковая поверхность (-х)-(-y) и боковая поверхность y-z или боковая поверхность (-y)-(-z) первой ...

ТОНКАЯ И ЭФФЕКТИВНАЯ СВЕТОВОДНАЯ СИСТЕМА

... 1. Осветительная система, имеющая:светопропускающий световод (10), имеющий верхнюю поверхность (58) и нижнюю поверхность (56), расположенные друг против друга;один или более светоизлучающих элементов (12a-h, 61), каждый из которых имеет, по меньшей мере, один источник (12a-h, 60a-d) света и выполнен с возможностью излучения света в светопропускающий световод (10),при этом светопропускающий световод (10) имеет кривую (18) постоянного угла, образованную в верхней поверхности (58), расположенной рядом с каждым из упомянутого одного или более светоизлучающих элементов (12a-h, 61), так что падающий свет из каждого из рядом расположенных светоизлучающих элементов (12a-h, 61) падает на верхнюю поверхность (58) под углом (γ), который больше, чем критический угол светопропускающего световода (10), вследствие чего падающий свет отражается обратно в светопропускающий световод (10),и дополнительно имеющая элементы (26) вывода, расположенные в светопропускающем световоде (10) для вывода света из светопропускающего ...

Beleuchtungsanordnung

The invention relates to a lighting device, comprising a light guide (11; 31; 43), a light source (12; 32, 33; 41), which couples the light that is emitted into the light guide, and a support (10; 20, 21; 22, 23; 30, 35, 38; 40, 42) in the form of a shell, consisting of several interconnected sub-shells which enclose the light guide, at least in the area in which the light should be deviated. The invention also relates to a method for producing a lighting device.

Signalleuchte für Fahrzeuge

OPTISCHE LICHTLEITERVORRICHTUNG

Beleuchtungsvorrichtung für Fahrzeuge

Die Erfindung betrifft eine Beleuchtungsvorrichtung für Fahrzeuge mit einem flächigen Lichtleitkörper, enthaltend zwei gegenüberliegende Flachseiten, an denen durch Totalreflexion Licht von einer Lichteinkoppelseite des Lichtleitkörpers zu einer Lichtauskoppelseite desselben übertragen wird, eine an der Lichteinkoppelseite angeordnete Schmalseite, der eine Mehrzahl von entlang der Schmalseite beabstandet zueinander angeordneter Leuchtelemente zugeordnet ist zur Einkopplung des Lichtes in den Lichtleitkörper, wobei die Schmalseite in mindestens einer senkrecht zu den Flachseiten verlaufenden Ermindest in einem eine Lichteinkoppelstelle bildenden Lichteinkoppelabschnitt derselben uneben ausgebildet ist.

Kühl- und/oder Gefriergerät

Die vorliegende Erfindung betrifft ein Kühl- und/oder Gefriergerät mit einem Gerätekorpus und einem gekühlten Innenraum, wobei im Innenraum ein Beleuchtungssystem vorgesehen ist, um den Innenraum auszuleuchten, wobei das Beleuchtungssystem eine Lichtquelle und eine Leuchtplatte umfasst, wobei Lichtquelle und Leuchtplatte so ausgebildet und angeordnet sind, dass Licht in die Leuchtplatte eingeleitet wird, und wobei die Leuchtplatte so ausgebildet ist, dass eingeleitetes Licht an wenigstens einer Oberfläche der Leuchtplatte großflächig ausgestrahlt wird.

DISPLAYSYSTEM MIT VERBESSERTER BELEUCHTUNG

Lighting element, especially for back lighting of liquid crystal display (LCD) or for ambient lighting, has light guide supplied with light at oblique angle

A lighting element (10) comprises a light guide supplied with light at an oblique angle. A light source element (10) comprises (a) a light guide (1) with back and longitudinal side faces (1C, 1D) covered with light reflective or diffuse back-scattering reflectors (4); and (b) one or more light coupling units (5) positioned on the longitudinal side faces (1C, 1D) or on the back face, each unit including a light source (5A) facing a reflector opening region (5B) such that light enters the light guide (1) at an oblique angle. An Independent claim is also included for an LCD equipped with the above light source element.

Flächenleuchtelement und Innenausstattungselement für ein Kraftfahrzeug mit einem Flächenleuchtelement

Die Erfindung betrifft ein Flächenleuchtelement (1) und ein Innenausstattungselement für ein Kraftfahrzeug mit einem derartigen Flächenleuchtelement (1). Das Flächenleuchtelement (1) weist eine Lichtquelle (3) und eine Lichtleiterfolie (5) zum Verteilen von Licht in einer Haupterstreckungsfläche der Lichtleiterfolie (5) auf. Eine zentrale Lichtabstrahlrichtung der Lichtquelle (3) ist dabei zumindest Bereich der Lichtquelle (3) im Wesentlichen senkrecht zu der Haupterstreckungsfläche in Richtung einer Leuchtrichtung (P2) des Flächenleuchtelements (1) ausgerichtet. Die Lichtleiterfolie (5) weist oberhalb der Lichtquelle (3) eine Ausnehmung auf, in welcher ein Umlenkspiegel (6) zum Umlenken des Lichts in die Lichtleiterfolie (5) angeordnet ist. Die Ausnehmung, der Umlenkspiegel (6) und ein diese umgebender Teilbereich (9) der Lichtleiterfolie sind durch eine lichtleitfähige Blende (10) überdeckt. Die Blende (10) dient zum Aufnehmen von Licht aus der Lichtleiterfolie (5) und zum Auskoppeln ...

Beleuchtungsvorrichtung

Vorrichtung zur Beleuchtung eines Bedienelementes, wobei an einer ersten Seitenfläche eines Lichtleiters eine Lichtquelle angeordnet ist, wobei das Bedienelement an einer zweiten Seitenfläche des Lichtleiters angeordnet ist oder zumindest teilweise über die zweite Seitenfläche hinausragt, wobei die zweite Seitenfläche der ersten Seitenfläche gegenüberliegt, wobei an der zweiten Seitenfläche (4, 44, 56, 87, 168) eine Reflexionsfläche (5, 6, 66, 71, 92, 117, 172) angeordnet ist, wobei Licht von der Lichtquelle (2) zu der Reflexionsfläche abstrahlbar ist, wobei Licht von der Reflexionsfläche (5, 6, 66, 71, 92, 117, 172) zu dem Bedienelement (10, 21, 88, 94, 111, 151, 161) umlenkbar ist, wobei das Bedienelement (10, 21, 88, 94, 111, 151, 161) durch das Licht beleuchtbar ist, wobei das Bedienelement (10, 21, 80, 111) eine Taste ist, vorzugsweise eine Drucktaste, wobei ein Tastenfuß (12, 23, 142) zumindest teilweise in den Lichtleiter (1, 141) hineinragt und wobei Licht aus dem Lichtleiter (1 ...

Multiple lamp illumination system

Improvements in or relating to advertising devices

... 202,276. Vercellino, F. Aug. 12, 1922, [Convention date]. Signs.-In an advertising device comprising a plate 1 of glass, crystal, &c., on which characters 5 or designs are engraved, and one or more luminous sources 3 projecting their rays in the plane of the plate, the sources are disposed in or near holes in the plate. An opaque or reflecting layer 2 may be provided behind the plate, and two transparent plates may be arranged back to back, with or without an intervening opaque layer. The lamp 3 may be behind the plate 1, which then has a smaller opening with a bevelled edge for reflecting the light in the plane of the plate.

Information display module

A waveguide and lighting device comprising the waveguide

OPTICAL LIGHT CONDUCTOR DEVICE

DEVICE FOR LIGHTING OR SIGNALING OF THE TYPE HIGH SPEED FIBRE OPTICS FOR MOTOR VEHICLES

BELEUCHTUNGSANORDNUNG

OPTICAL RADIATION EXPANDING MANDREL WITH SUBSTRATE LIGHT WAVE LINE

DEVICE FOR LIGHTING AND/OR SIGNALING FOR MOTOR VEHICLES

Lichtleitplatte

Die Erfindung betrifft eine Lichtleitplatte (1) umfassend eine transparente Platte (2), welche eine erste Oberfläche (3) und eine zweite Oberfläche (4) aufweist, und eine Lichtleiterfolie (5), welche zumindest abschnittsweise auf der ersten Oberfläche (3) der transparenten Platte angeordnet ist. Dabei ist vorgesehen, dass auf der zweiten Oberfläche (4) der transparenten Platte (2) zumindest abschnittsweise eine partielle Spiegelfolie (6) angeordnet ist und dass die partielle Spiegelfolie (6) zumindest einen verspiegelten Bereich (7) und zumindest einen nicht verspiegelten Bereich (8) umfasst.

Beleuchtungsvorrichtung für ein Kraftfahrzeug sowie Fahrzeugscheinwerfer mit Beleuchtungsvorrichtung

Die Erfindung betrifft eine Beleuchtungsvorrichtung für Fahrzeuge, insbesondere Kraftfahrzeuge, umfassend zumindest eine Lichtquelle und zumindest eine der zumindest einen Lichtquelle zugeordnete Lichtleiteranordnung (1) zur Führung des von der zumindest einen Lichtquelle abgestrahlten und in die Lichtleiteranordnung (1) eingekoppelten Lichts, wobei in der Lichtleiteranordnung (1) ein oder mehrere Auskopplungsstellen (2) zur Auskoppelung zumindest eines Teils des eingekoppelten Lichtes vorgesehen sind, und wobei zur Umlenkung des eingekoppelten Lichtes zu der einen oder den mehreren Auskopplungsstellen (2) der Lichtleiteranordnung (1) eine Umlenkeinrichtung (100) zugeordnet ist, welche Umlenkeinrichtung (100) das in einer Haupt-Lichteinspeisrichtung (L1) eingekoppelte Licht durch Reflexion an zumindest einer Reflexionsfläche (101, 102) der Umlenkeinrichtung (100) in zumindest eine Haupt-Lichtumlenkrichtung (L2, L2) umlenkt. Die zumindest eine Reflexionsfläche (101, 102) umfasst zumindest ...

THIN TAILLIGHT WITH LOW PROFILE SIDE LEDS

LIGHTING ARRANGEMENT

OPTICAL INDICATOR FOR ELECTRICAL HOUSEHOLD APPLIANCES

LEUCHTOBJEKT

The invention relates to an illumination object having an illumination means (2) formed by one or more LEDs (4) connected parallel or in series, the LEDs being disposed on at least one electrical conductor (3, 14) and the LEDs being fused with the electrical conductor in a flat illumination body (1) made of plastic, and the illumination body being designed in a reflective manner on the reverse side thereof such that the light of the LEDs is reflected into the light body, characterized in that, for the even illumination of the illumination body, the reverse side is provided with reflection points (21) that are varied with regard to the size of the points or variation of frequency of the points per surface element as a function of the beam direction and distance from the LED(s) (4) such that the illumination body (1) may be illuminated on the front side thereof evenly or, if desired, with surface regions of greater and less light emission.

Beleuchtungsvorrichtung für ein Fahrzeug sowie Fahrzeugscheinwerfer

Die Erfindung betrifft eine Beleuchtungsvorrichtung für Fahrzeuge, insbesondere Kraftfahrzeuge, umfassend zumindest eine Lichtquelle und zumindest eine der zumindest einen Lichtquelle zugeordnete Lichtleiteranordnung (1) zur Führung des von der zumindest einen Lichtquelle abgestrahlten und in die Lichtleiteranordnung (1) eingekoppelten Lichts, wobei in der Lichtleiteranordnung (1) ein oder mehrere Auskopplungsstellen (2) zur Auskoppelung zumindest eines Teils des eingekoppelten Lichtes vorgesehen sind, und wobei zur Umlenkung des eingekoppelten Lichtes zu der einen oder den mehreren Auskopplungsstellen (2) der Lichtleiteranordnung (1) eine Umlenkeinrichtung (100) zugeordnet ist, welche Umlenkeinrichtung (100) das in einer Haupt-Lichteinspeisrichtung (L1) eingekoppelte Licht durch Reflexion an zumindest einer Reflexionsfläche (101, 102) der Umlenkeinrichtung (100) in zumindest eine Haupt-Lichtumlenkrichtung (L2, L2) umlenkt. Die Umlenkeinrichtung (100) weist zumindest eine Licht nach vorne ...

EQUIPMENT WITH A CHARACTERISTIC CARRIER

DEVICE, CONSISTING OF A LIGHT HOPPER.

BARREL

LIGHT DISTRIBUTING SYSTEM

SHINING DEVICE TO THE ANNOUNCEMENT OF CHARACTERS

ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY UNIT

INTERNALLY ILLUMINATED LIGHT PANEL WITH LED MODULES HAVING LIGHT REDIRECTING DEVICES

An illuminated sign having front, back and side surfaces. A plurality of first cavities are formed into the back surface of the sign. A plurality of light emitting modules are disposed in the plurality of flrst cavities. The modules each include a light emitting diode having an emission axis and for producing at least some light output generally parallel to the emission axis, an optical device disposed adjacent the light source having a reflective surface for reflecting the light output in directions that are generally perpendicular to the emission axis, and a guide element disposed adjacent the optical device for coupling the reflected light output into the interior of the sign. The guide element includes a second cavity formed therein in which the optical device is disposed. The front surface is illuminated by the coupled light output from the light emitting modules by reflection and/or diffusion inside the sign.

MULTIFUNCTION LAMP

A multifunction lamp comprises: a light source; a first reflector receiving and reflecting the projected light from the light source; a second reflector receiving and reflecting the reflected light from the first reflector; a first light-guide member which is provided between the light source and the first reflector or and the end of the first reflector away from the light source; and a second light-guide member guiding the light reflected by the second reflector out of the lamp.

MODE-SWITCHABLE BACKLIGHT, PRIVACY DISPLAY, AND METHOD

A mode-switchable backlight and mode-switchable privacy display provide narrow-angle emitted light during a first mode and broad-angle emitted light in a second mode, the broad-angle emitted light being a combination of the narrow-angle emitted light and bidirectional emitted light. The mode-switchable backlight includes a first directional backlight and a second directional backlight. The first directional backlight is configured to provide the narrow-angle emitted light during both of the first mode and second mode, while the second directional backlight is configured to provide the bidirectional emitted light exclusively during the second mode. The mode-switchable privacy display includes an array of light valves configured to modulate the narrow-angle emitted light as a private displayed image during the first or privacy mode and to modulate broad-angle emitted light as a public displayed image during the second or public mode.

MODE-SWITCHABLE BACKLIGHT, DISPLAY, AND METHOD

A mode-switchable backlight and mode-switchable display employ a first planar backlight to emit broad-angle emitted light during a first mode and a second planar backlight to emit directional emitted light during a second mode. The second planar backlight includes a plate light guide and an array of multibeam elements configured to scatter out guided light from the light guide during a second mode as the directional emitted light including a plurality of directional light beams having principal angular directions corresponding to view directions of a multiview image. The mode-switchable display further includes t a light valve array configured to modulate the broad-angle emitted light to provide a two-dimensional image during the first mode and to modulate the directional emitted light to provide a multiview image during the second mode.

SUPERSAMPLED 3D DISPLAY WITH IMPROVED ANGULAR RESOLUTION

In a supersampling technique, an adjacent pair of pixels in a three-dimensional (3D) electronic display is driven based on angular combinations. In particular, a pixel in the pair is driven by an angular combination of a pixel in a 3D view of a 3D image and at least one product of a pixel in an intermediate 3D view and an associated weight. Moreover, the 3D views applied to the pair have different associated angular ranges with different principal angular directions, and the intermediate 3D view has an associated intermediate angular range with an intermediate principal angular direction that is between the principal angular directions. When viewing the 3D electronic display along a principal angular direction in the principal directions of the 3D view, a viewer sees the 3D view, and when viewing the 3D electronic display along the intermediate principal angular direction, the viewer sees the intermediate 3D view.

LIGHT GUIDE FOR IMPROVING DEVICE LIGHTING

A light guide guides light from a light emitter that is adjacent to an aperture of an electronic device. The light is eventually emitted from the aperture, to thereby provide lighting. The light guide can include a plurality of prisms which can thereby permit reduction in the overall thickness of the electronic device.

LIGHTING DEVICE

The light sources provided give off light in all directions. If a light sour ce at the edge of a planiform lamp which radiates into t he lamp is attached or imbedded at the edge, it is apparent that a large portio n of the light at the edge of the surface to be illumina ted leaves the lamp (visible as a bright edge etc.). This effect occurs in all known ar rangements because in this region the light strikes the surface with a smaller angle than the angle of total reflection, and for the most pa rt exits. This natural characteristic considerably limit s the use of radiated light for the lighting effect in the entire area of the lamp. An es sential major feature of this patent application is how to compensate for this effect and thus the possibility of using the portion of light norma lly ignored in known applications.

Einrichtung zur Beleuchtung einer Leseunterlage

INDICATING AND CONTROL MECHANISM.

MECHANISM FOR THE PRESENTATION OF INFORMATION, ANNOUNCEMENTS, REFERENCES ETC.

Shaped part as optical light conductor.

Die Erfindung betrifft ein Formteil aus transparentem Material, welches zumindest einen Lichtleiter (1) zum Leiten eines Lichtstrahls von einer fest auf einer Schaltungsplatte (9) angebrachten Lichtquelle (7) umfasst, wobei das Formteil ein Betätigungselement (2) für einen auf der Schaltungsplatte (9) befindlichen Taster (8) umfasst und wobei dieses Betätigungselement (2) über zumindest einen elastischen Steg (3) mit dem zumindest einen Lichtleiter (1) verbunden ist. Damit ergibt sich ein einfach herzustellendes Formteil mit Lichtleitfunktion bei gleichzeitiger Ausprägung als Betätigungselement (2) für einen Taster (8).

Apparatus having a dual optical illumination and imaging.

Il est décrit un appareil présentant une zone d’affichage, tel un écran à cristaux liquides (4), et comprenant un dispositif optique destiné à former un motif décoratif, sous la forme d’une image. Le dispositif optique de formation d’une image comporte un guide optique (1), au moins partiellement superposé à la zone d’affichage (4) et présentant deux faces étendues (10, 11) ainsi qu’une face latérale (12). Des extracteurs optiques (20) présentant chacun au moins une surface de réflexion de la lumière sont agencés en un premier groupe dans au moins une des faces étendues (11). Une source lumineuse (8) est disposée de manière à émettre de la lumière en direction des surfaces de réflexion via la face latérale (12) du guide optique. Ainsi, chacune des surfaces de réflexion est à l’origine de la formation d’un faisceau lumineux réfléchi dans une direction bien définie, l’ensemble des faisceaux lumineux formant une image figurative dans cette direction, qui peut être typiquement choisie comme ...

The invention relates to a timepiece comprising a movable part provided with a luminous index.

L'invention concerne une pièce d'horlogerie (1), notamment une montre de plongée, comprenant une boîte (2) munie d'une carrure (3), une source lumineuse (6), un élément mobile (4) entre plusieurs positions par rapport à la boîte (2), et des moyens d'assemblage mobiles de l'élément mobile (4) sur la carrure (3) de la boîte (2). L'élément mobile (4) comprend un guide de lumière (10) et une couverture supérieure (9) comportant un index (5), le guide (10) étant configuré pour recevoir un faisceau lumineux (8) de la source de lumière par une face d'entrée (12), et pour guider des rayons lumineux à travers une face de sortie (15) du guide de lumière (10) afin d'éclairer l'index (5), quelle que soit la position de l'élément mobile (4) par rapport à la boîte (2).

LIGHT-GUIDE OPTICAL DEVICE

Backlight assembly and liquid crystal display apparatus having the same

Light guide, illumination device comprising such a light guide and interior fitting part for a vehicle comprising such an illumination device

Light guide for an illumination unit, particularly in the interior space, of a vehicle, comprising: a light-guiding section (20); and a coupling section (10) for coupling light, comprising a first deflection device (13) in order to introduce coupled light in a first direction into the light-guiding section, and a second deflection device (14) in order to introduce coupled light in a second direction, which is opposite of the first direction, in the light-guiding section (20), wherein the light-guiding section (20) extends annularly from the first (13) to the second (14) deflection device and, in order to decouple coupled light from one of the surfaces thereof, comprises diffusion surfaces (25) on the surface thereof opposite of said surface.

Lighting device

The light guide plate and surface light source device

Back light module and optical plate

The invention relates to an optical plate which comprises at least one optical plate unit including a first surface and a second surface opposite to the first surface. A plurality of closed V-shaped bulges are formed on the first surface. Each closed V-shaped bulge is circular, triangular or polygonal, and the cross section is V-shaped. A plurality of spherical grooves are formed on the second surface, and at least one of the first surface and the second surface is provided with a light source containing part. The invention also provides a backlight module which adopts the optical plate, and the backlight module has the advantage of even light emission.

Surface light source device and liquid crystal display device

With optical coupling to the rear surface of the thin edge of the LED backlight

INDICATOR DEVICE, IN PARTICULAR FOR MOTOR VEHICLES, COMPRISING AN INDICATOR NEEDLE.

Improvements with the signs and indicator lights

DEVICE Of LIGHTING FOR PASSIVE POSTING FUNCTIONING BY REFLEXION

LIGHTING DEVICE WITH A SCREEN EDGE LIGHT (S)

Un dispositif d'éclairage (D) comprend un écran (EC), comportant des faces avant (FV) et arrière et délimité par des bords (B1-B4) comprenant des extrémités opposées, et au moins une source de lumière générant des photons. L'un au moins des bords (B1-B3) comprend sur la face arrière des premières structures tridimensionnelles (ST1) propres à réfléchir totalement des photons, issus de l'une de ses extrémités ou d'une partie centrale, vers la face avant (FV) afin qu'ils sortent par ce bord (B1 -B3).

LIGHTING GLAZING

La présente invention concerne un vitrage éclairant, de préférence un vitrage éclairant pour véhicule, comprenant une première feuille (1), en verre minéral ou organique, avec une première face principale (11), une deuxième face principale (12) et une tranche (13), au moins un guide d'onde (2) avec - au moins une première face d'extrémité (21) d'entrée de la lumière, - au moins une deuxième face d'extrémité (22) de sortie de la lumière en regard de la tranche (13) de la première feuille (1), - une première face principale de guidage (23), - une deuxième face principale de guidage (24), et - une face de renvoi (25) de la lumière reliant la deuxième face principale de guidage (24) à la deuxième face d'extrémité (22) de sortie de la lumière, et conçue de manière à modifier la direction principale de propagation de la lumière d'un angle au moins égal à 90°, et une ou plusieurs sources lumineuses (3) comportant chacune une face émettrice (31) en regard de la face d'extrémité (21) d'entrée de ...

ILLUMINATION DEVICE AND/OR SIGNALING TWO-COLOR, IN PARTICULAR FOR MOTOR VEHICLE

LIGHT GUIDE APPARATUS FOR LIGHTING AND/OR SIGNALING OF MOTOR VEHICLE

OPTICAL GUIDE WITH CONES OF LIGHT RE

Lighting or signaling device for production of luminous flux to e.g. indicate of motor vehicle, has guiding layer that is provided with reflection unit to direct rays of collimated beam toward guiding layer

La présente invention concerne un dispositif d'éclairage et/ ou de signalisation pour véhicule automobile comportant une source lumineuse et une nappe de guidage (1) présentant une surface d'entrée de rayons lumineux, une tranche de sortie (2) et configurée pour propager les rayons lumineux vers la tranche de sortie, caractérisé en ce que: - il comporte un collimateur (5) doté d'une surface d'entrée des rayons émis par la source et d'une surface de sortie d'un faisceau lumineux collimaté, le collimateur étant positionné relativement à la nappe de sorte à ce que l'axe du faisceau collimaté soit orienté suivant l'épaisseur (7) de la nappe, - la nappe comprend des moyens de réflexion configurés pour diriger les rayons du faisceau collimaté vers la tranche de sortie.

DEVICE Of LIGHTING FOR a REGISTRATION OF MOTOR VEHICLE

Optical assembly for displaying information - includes light source in opaque receptacle which diffuses light through transparent bent holder to illuminate script

“LAMP FOR VEHICLE”

LIGHTING SYSTEM FOR A MOTOR VEHICLE

L'invention se rapporte à un système d'éclairage et/ou de signalisation pour véhicule automobile comprenant une source lumineuse (1) et un guide (3) de lumière. Le guide comprend une première surface (301) et une deuxième surface (302) opposée à la première surface. La première surface comprend un moyen de couplage (2) apte à coopérer avec la source lumineuse (1). L'une des surfaces au moins parmi la première surface et la deuxième surface comprend une portion munie de motifs (400, 410, 40, 41) destinés à découpler la lumière hors du guide.

DEVICE Of LIGHTING AND/OR STREET SIGNS FOR MOTOR VEHICLE.

L'invention concerne un dispositif d'éclairage et/ou de signalisation pour véhicule automobile pour éclairer dans une direction longitudinale d'émission, du type comportant : - au moins une source lumineuse (32) qui émet des rayons lumineux, - au moins une nappe de guidage (28) de la lumière, dans laquelle se propagent les rayons lumineux issus de la source lumineuse (32) par réflexions successives, tel que la nappe de guidage (28) comporte à une extrémité une tranche réfléchissante (30) de manière à rediriger les rayons lumineux dans la nappe (28), et en ce qu'un contour de sortie (36) de la nappe (28), à l'extrémité opposée à la tranche réfléchissante (30), comporte un profil réfléchissant (38), notamment incliné par rapport à l'axe longitudinal de ladite nappe, (28) de manière à réfléchir les rayons lumineux réfléchis globalement dans une direction d'émission qui est substantiellement parallèle audit axe longitudinal.

BACKLIGHT AND BACKLIGHT DRIVE DEVICE

SURFACE LIGHT SOURCE DEVICE CAPABLE OF ENHANCING THE LUMINESCENT BRIGHTNESS OF AN OPTICAL DISK MAIN BODY

PURPOSE: A surface light source device is provided to prevent the generation of hot spot or brightness by absorbing a light absorption sheet and to induce light which is leaked from a light inducing unit. CONSTITUTION: A light guide plate(34) includes a light incoming area, a light inducing unit, and a light guide plate main body(49). The light guide plate main body is in a light emitting area. A light diffusing plate is put on the upper side of the main body. The prism sheet is presented from the optical disk main body and covers the upper side of a slope surface through an air layer. A plurality of light sources is arranged in the optical surface. COPYRIGHT KIPO 2012 ...

ULTRATHIN LIGHTING ELEMENT

An ultra thin lighting element including at least one light source. A lightguide element includes one lightguide layer comprising a plurality of discrete fine optic surface relief structures on at least one portion of at least one surface. Each surface relief structure includes basic structural features on the order of about 10 microns or less in height, and on the order of about 10 microns or less in each lateral dimension. The number, arrangement and size of each surface relief structure and height and lateral dimensions of the structural features of the surface relief structures being varied to provide a desired degree of outcoupling modulation of light incoupled into the light guide element. © KIPO & WIPO 2007 ...

ILLUMINATION DEVICE CAPABLE OF MOVING A LIGHT EMISSION POINT

PURPOSE: An illumination device is provided to increase wide light distribution by arranging a reflective unit on an optical guide unit. CONSTITUTION: An optical guide unit(20) surrounds an LED light source(10). A cover unit(40) is formed on a substrate(1). The cover unit surrounds the LED light source and the optical guide unit. A reflective unit(30) is arranged on the optical guide unit. The reflective unit reflects at least some of the incident light from the LED light source. COPYRIGHT KIPO 2013 ...

FULL COLOR LIGHT SOURCE DEVICE

PURPOSE: A full color panel light source device is provided to obtain luminous efficiency in case of using several light emitting devices. CONSTITUTION: A full color light source device comprises at least one blue color LED, green color LEDs more in number than that of the blue color LEDs, and red color LEDs more in number than that of the blue color LEDs. White color light is formed by using the full color light source device and mixing lights from the respective LEDs of the full color light source device in a light mixing part, and is then introduced into a panel light guide part to perform light emission. © KIPO & JPO 2002 ...

dispositivo de iluminação compreendendo um guia de luz baseado em película

Light guide structure and lamp structure

Light-guiding plate and plane illumination apparatus therewith

The invention discloses a light-guiding plate and a plane illumination apparatus therewith. The plane illumination apparatus includes the light-guiding plate and at least one light-emitting source. The light-guiding plate includes a light incident surface, a first surface opposite to the light incident surface, a second surface between the light incident surface and the first surface, and a light emitting surface opposite to the second surface. The second surface is coated with diffuse reflection layer. The first surface gradually extends substantially toward the light incident surface from its one side near to the second surface to the other side near to the light emitting surface. The light-emitting source is disposed corresponding to the light incident surface for providing a light beam.

Surface light source device and liquid crystal display device

The invention is a surface light emitting device and a liquid crystal display device that have wide color reproduction range and small power consumption, said devices (100, 200) being provided with: a laser light source (10); a light path changing element (6) that changes a laser beam (L10) that was input to a light input surface to a linear laser beam (L110) having a straight-line cross-section shape, and outputs said linear laser beam (L110) from a light output surface; a first surface light emitting light guide (5) that by adjusting a spatial intensity distribution in a second plane parallel to a plane (x-y plane) containing a line (y direction) that is the cross-section shape of the linear laser beam, and containing the forward direction (x direction) of the linear laser beam, transforms the linear laser beam (L110) into a surface laser illumination light (L111), and outputs same; an LED light source (9); and a second surface light emitting light guide (4) that is placed as a layer ...

Horizontal parallax multiview display having slanted multibeam columns and method for displaying multiview images

Light guiding board, and lighting device, plane light source device and display device using the light guiding board

A light guide plate comprises a first light guide layer composed of a material having a refractive index n1, a diffusing light guide layer having a function to diffuse a light, and a reflective means for directing a light propagating in the first light guide layer to the diffusing light guide layer. The reflective means is formed on a surface of the first light guide layer that is opposite to a light guide surface on which a light is incident. The diffusing light guide layer comprises at least a second light guide layer composed of a material having a refractive index n2 (n2 < n1) and a diffusing layer for diffusing a light propagating in the second light guide layer.

Light emitting device

The invention is to provide a light emitting device for uniform heat-radiation characteristics, improved heat-radiation efficiency, and more compactness, resulting in improved color balance, higher output of a light emitting element, longer life and the like. Individual leads 6A, 6G, and 6B as well as a common lead 6C are formed on a front surface 2a and a rear surface 2C of a substrate 2, respectively. A plurality of LED elements 3R, 3G, and 3B are arrayed in a line on the common lead 6C of the front surface 2a. The common leads 6C formed on the front surface 2a and the rear surface 2c are connected together with through hole platings 10G and 10B. The heat from the plurality of LED elements 3R, 3G, and 3B is radiated into the air from the common lead 6C of the rear surface 2B through the common lead 6C of the front surface 2a as well as through the hole platings 10G and 10B.

Illumination system

Backlight module and liquid crystal display device incorporating same

ETENDUE-CONSERVING ILLUMINATION-OPTICS FOR BACKLIGHTS AND FRONTLIGHTS

A luminance-preserving non-imaging backlight (20) that includes a luminous source emitting light (10), an injector (21), an ejector (23), a CPC profile(21) and microstructured facets (d,dd) that refract upwardly reflected light into a collimated direction common to the facets.

ILLUMINATION DEVICE WITH BUILT-IN LIGHT COUPLER

The invention comprises devices and methods for coupling a light source to a display illumination device. In one embodiment, an illumination device includes a light guide (91) comprising a front surface, a back surface, a light coupling section (92) configured to receive optical energy from a light source (82) in to the light guide through said front surface or said back surface at an angle about normal to the optical energy receiving surface, and further configured to direct light through said light guide, and a light turning section (94) configured to redirect out of the light guide at least a portion of the light received from said light coupling section, said redirected light at an angle about normal to the optical energy receiving surface.

SUBSTRATE-GUIDED OPTICAL BEAM EXPANDER

The invention provides an optical device, including a light-transmitting substrate, optical means for coupling light into the substrate by total internal reflection, and a plurality of partially reflecting surfaces carried by the substrate, characterized in that the partially reflecting surfaces are parallel to each other and are not parallel to any of the edges of the substrate.

METHODS OF FORMING DIRECT-LIT BACKLIGHTS HAVING LIGHT RECYCLING CAVITY WITH CONCAVE TRANSFLECTOR

Direct-lit backlights and associated methods and components are disclosed In one embodiment, a method of forming a direct-lit backlight having an output area includes providing a transflector that partially transmits and partially reflects incident light. The method further includes forming one or more recycling cavities that substantially fill the output area of the backlight, where forming the one or more recycling cavities includes forming the transflector into at least one concave structure that faces a back reflector of the backlight. The method further includes positioning at least one light source behind the output area to inject light into the one or more recycling cavities.

SURFACE ILLUMINATION DEVICE

A surface illumination device (15) comprises a light source (17) and a light guide plate (16). The underside surface of the light guide plate (16) is provided with a display region, or in other words, a display unit (19) of some shape or design. The display unit (19) is configured in a manner such that multiple prism-shaped deflection patterns are arranged inside some shape or design. Both side surfaces (16b) of the light guide plate (16) are provided with a light control means, or in other words, a notch (22) for reducing the amount of light heading toward the display unit (19) by redirecting light that was totally reflected by the side surfaces (16b) and heading toward the display unit (19) in a manner such that instead, the light heads toward and passes through to the outside.

THIN BACKLIGHT USING LOW PROFILE SIDE EMITTING LEDS

Backlights containing low profile, side-emitting LEDs are described that have improved brightness uniformity. In one embodiment, the backlight comprises a solid transparent lightguide with a plurality of openings in a bottom surface of the lightguide, each opening containing a side-emitting LED. Prisms or other optical features are formed in the top wall of each opening to reflect light in the lightguide towards a light output surface of the lightguide so that the side-emitting LEDs do not appear as dark spots at the output of the backlight. To avoid any direct emission from the sides of the LED toward the output surface of the lightguide appearing as bright areas, optical features are formed at the edges of the opening or in the output surface of the lightguide so that direct emission light is not output from the lightguide. Substantially identical cells may be formed in the lightguide using cellular walls around one or more LEDs.

LIGHT SOURCE GUIDING STRUCTURE AND LAMP STRUCTURE

A lamp structure includes an electrical connection unit, a light emitting unit, and a light guiding unit. The electrical connection unit includes an electrical connection element. The light emitting unit includes at least one light emitting element disposed on the top side of the electrical connection unit and electrically connected to the electrical connection element. The light guiding unit includes a light guiding element disposed on the top side of the electrical connection unit. The light guiding element has a bottom light-input surface, a top light-output surface, and a surrounding light-output surface. The surrounding light-output surface has a first surrounding region gradually outwardly expanded from bottom to top, a second surrounding region connected to the first surrounding region and gradually inwardly contracted from bottom to top, and a third surrounding region connected to the second surrounding region and gradually outwardly expanded from bottom to top.

MANUFACTURING METHOD FOR ELECTROLUMINESCENCE DISPLAY APPARATUS

A method of manufacturing an electroluminescent display apparatus includes: discharging first droplets of the fluid luminescent material from the first nozzles to the target discharge areas when the first nozzles are positioned in an area above the target discharge areas so that all of the first droplets are arranged in the target discharge areas on different X-axis direction positions so as not to overlap each other when viewed in the Y-axis direction; and discharging second droplets of fluid luminescent material from the second nozzles to the target discharge areas to which the first droplets have been discharged when the second nozzles are positioned in the area above the target discharge areas after a predetermined period of time passed since the discharge of the first droplets to the target discharge areas.

Illumination device

An illumination device includes a light-guide member having an annular shape provided with an incidence portion of a light in one portion, and illuminating the entirety by propagating an incident light; and a diffusion cover disposed on a side opposite to a light source relative to the incidence portion by interposing the light-guide member therebetween, and diffusing a light generated from the light-guide member. The diffusion cover includes a plate-shaped base portion covering the incidence portion side in the light-guide member, and a circular portion covering the remaining portions of the light-guide member by integrating an outer peripheral portion into the plate-shaped base portion.

Slim waveguide coupling apparatus and method

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure.

Light guide plate, back light assembly having the same and display apparatus having the same

In a light guide plate and a display apparatus having the light guide plate, the light guide plate includes an incident face and a first exiting face. The incident face receives a light provided from an exterior. The first exiting face includes a first area and a second area. A first light-controlling pattern is formed in the second area. The first exiting face guides the incident light to the first area by the first light-controlling pattern and exits the guided light.

Linear side emitter, backlight system and liquid crystal display using the same

A linear side emitter, a backlight system and a liquid crystal display using the same are provided. The linear side emitter includes a plurality of LED chips, a bottom portion, a reflecting surface, and side surfaces. The LED chips arranged in a line on the bottom portion. The reflecting surface is disposed above the bottom portion and reflects light exiting the LED chips. The side surfaces are formed at both sides of the LED chip array line and transmit light is reflected by the reflecting surface and light reflected by the reflecting surface and then reflected by the bottom portion. The side surfaces each have at least one bend formed therein.

Front illumination device and reflection-type liquid crystal display device incorporating same

A front-light, to be used by mounting on the front of a reflection-type LCD, etc., is provided with a light-conducting body having a light-entry surface, through which light enters from a light source, and a light exit surface, through which light is projected toward a liquid crystal cell; the light-entry surface being provided so as to incline with respect to the normal direction of the light exit surface.

SHORT DISTANCE REFLECTED PATTERN DECORATING PLATE

A short distance reflected pattern decorating plate that compromises a base, a decorating plate, a front plate and a circuit board that makes the decorating plate brighter and clearer, and to emphasize the decorating plate with a bright light circle.

Uniform reflective light-guide apparatus with micro-structure, and backlight module and LCD device having the same

A uniform reflective light-guide for accompanying an edge light source to form a backlight module for an LCD display includes a light-guiding layer and a reflective layer. The light-guiding layer further defines a light-introducing surface and a light-exiting surface. The light-introducing surface is to allow lights emitted from the edge light source to enter the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights to leave the light-guiding layer. The reflective layer is to reflect the incident lights back to the light-guiding layer. The reflective layer and the light-guiding layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air spacing in between. A reflective surface is defined to interface the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface.

Light converting optical structure and lighting device utilizing the same

Embodiments of the present invention include a light converting structure, a light accommodating structure, and a lighting device. The light converting structure includes a bottom conical recess to accommodate a light source, and a top conical recess to distribute the lights emitted from the light source. The light accommodating structure includes a through hole with a small opening and a large opening. A light source is accommodated in the through hole at the large opening, and the lights emitted from the light source output at the small opening. The lighting device utilizing the light converting structure and/or the light accommodating structure obtains a thinner configuration.

Light guide plate and virtual image display device equipped with the same

The sizes of the respective reflecting units vary in the image take-out section along the Z direction in association with the state of the total reflection angle in the light guide section. Thus, it becomes possible to keep the sufficient effective light beam width of the image light input thereto in all of the reflecting units. Therefore, the deterioration in the image light caused by the reflection in the reflecting units can be avoided, and as a result, the degradation of the resolution of the image due to the virtual image light thus emitted can be prevented.

Transmissive Body

An apparatus and method for transmitting, collimating and redirecting light from a point-like source to produce a collimated optical signal in a substantially planar form are provided. In one embodiment the apparatus is manufactured as a unitary transmissive body comprising a collimation element and a redirection element, and optionally a transmissive element. In another embodiment the apparatus is assembled from one or more components. The apparatus and method are useful for providing sensing light for an optical touch input device.

Mosaic light guide plate structure and backlight module

Disclosed are a mosaic light guide plate structure and a backlight module. The mosaic light guide plate structure comprises at least two light guide plate units. Each of the light guide plate units comprises a first tilt face and a second tilt face with cooperation of at least one light-emitting unit. The first tilt face is positioned at a side of the light guide plate unit. The second tilt face is oppositely positioned to the first tilt face at the other side. The at least one light-emitting unit is positioned under the first tilt face. The present invention assembles adjacent tilt faces to form the light guide plate and changes the direction of light with the tilt faces for solving issues of length limitation for the light guide plate. Accordingly, the mosaic light guide plate structure of the present invention can be suitable for large-scale LCDs and realize local dimming.

Light guides and backlight systems incorporating light redirectors at varying densities

Light guides and backlight systems are disclosed that include one or more groups of geometric light redirectors whose arrangement and/or orientation across the surface of a light guide varies to improve light emission uniformity and to reduce visual artifacts.

Light guide element, light source module, and display

A light guide element, a light source module, and a display are provided. The display includes a display panel and the light source module. The light source module includes a light source and the light guide element, wherein light emitted by the light source is guided toward the display panel by the light guide element. The light guide element includes a plurality sidewalls and a bottom wall. The sidewalls surround the bottom wall and are connected with each other to form a light entering opening, a light exiting opening, and an inner reflection room. Each of the sidewalls and the bottom wall has at least one reflection surface, wherein the reflection surface faces the inner reflection room.

Image relay waveguide and method of producing same

Described are embodiments of a process including patterning one or more reflectors on a surface of a substrate of a material, the surface oriented at a selected angle relative to a (100) crystallographic plane of the material, and etching one or more reflectors in the surface, each reflector including one or more reflective surfaces formed by (111) crystallographic planes of the material. Also described are process embodiments for forming a molded waveguide including preparing a waveguide mold, the waveguide mold comprising a master mold including one or more reflectors on a surface of a substrate of a master mold material, the surface oriented at a selected angle relative to a (100) crystallographic plane of the material, each reflector including one or more reflective surfaces formed by (111) crystallographic planes of the material, injecting a waveguide material into the waveguide mold, and releasing the molded waveguide from the waveguide mold.

Planar light source apparatus and display apparatus using same

A planar light source apparatus includes a point light source and a light guide plate shaped like a flat plate with a rectangular shape in a plan view. The light guide plate includes an output surface confronting an opening portion, a pair of second side surfaces opposed to each other, and a hole opening in a non-output surface and formed near one of the first side surfaces at a position where the point light source is to be arranged. Each of the pair of second side surfaces is at least partially configured as a prism whose ridge line extends in a direction perpendicular to the output surface and whose cross-section, when sectioned in a direction parallel to the output surface, has a sawtooth-like shape in which concavity and convexity are repeated. A light of the point light source can be efficiently uniformized in the light guide plate, and thus unevenness of brightness can be prevented.

Optical system for coupling light from point light sources into a flat light guide

The invention relates to an optical system for coupling light from at least one approximately point-shaped light source such as a LED into a flat light guide made of a transparent material such as glass or plastic. The inventive system is characterized in that the point light source is arranged above a surface of the light guide and is associated with an optical element, which couples the light from the point light source into the flat light guide at the surface thereof, wherein the in-coupled light satisfies the condition of the critical angle for total reflection and remains inside the flat light guide until controlled out-coupling.

Light guide with decoupling portion and shield collecting the decoupled rays

A light guide comprising an external surface forming a guiding diopter, the guide being suitable for guiding light rays by reflection on the guiding diopter. The guide comprises at least one decoupling portion, with a refraction decoupling diopter arranged so as to refract light rays to decouple them from the guide, and thus transmit them out of the guide through the refraction decoupling diopter.)

light mixing module, and a luminaire comprising such a light mixing module

A light mixing module ( 3 ) for receiving light from a first set of light sources ( 4 ) and a second set of light sources ( 5 ), said light mixing module comprising: -an annular light guiding element ( 11 ), said annular light guiding element having an inner edge ( 13 ), a peripheral edge ( 12 ), a first intermediate surface ( 15 ) extending between said inner and peripheral edges and arranged to face said light sources, and a second intermediate surface ( 16 ) extending between said inner and peripheral edges opposite said first intermediate surface, wherein said inner edge ( 13 ) defines a cavity ( 18 ) with an opening arranged to face said light sources, wherein said opening is arranged to receive light from said first set of light sources ( 4 ) and said first intermediate surface ( 15 ) is arranged to receive light from said second set of light sources ( 5 ); and -a first reflective surface ( 17 ) arranged to close said cavity in an end opposite said opening so as to form a first mixing chamber ( 18 ), wherein said annular light guiding element ( 11 ) and said first reflective surface ( 17 ) is arranged in such a way that light entering via said opening is mixed in said first mixing chamber ( 18 ), coupled into said annular light guiding element ( 11 ) through said inner edge ( 13 ), guided through the annular light guiding element ( 11 ) in a radial direction by means of total internal reflection and coupled out through the peripheral edge ( 12 ), and light received by said first intermediate surface ( 15 ) is guided through said light guiding element ( 11 ) by means of total internal reflection and out-coupled through said second intermediate surface ( 16 ).

Backlight device and display device

Provided is a backlight device which can reduce the size and weight of light-guiding members while also improving light use efficiency. The backlight device ( 10 ) is provided with a light-guiding plate ( 11 ) and a plurality of LEDs ( 12 ) which irradiate the light-guiding plate with light. The light-guiding plate includes a plurality of side surfaces ( 11 a ) and a plurality of light incident surfaces ( 11 b ) which are formed in a plurality of corners and are arranged opposite the LEDs. The side surfaces are arranged between adjacent light incident surfaces and are formed in convex shapes.

Illumination unit and display apparatus using the same

An illumination unit of the present invention includes a tabular light guide plate having a light emitting surface for emitting light coming from an LED as planar light, wherein a recessed portion is formed in the opposite surface of the light emitting surface of the light guide plate, and wherein the LED is provided in the recessed portion so that the optical axis of the LED becomes parallel to the light emitting surface of the light guide plate. Then, a dimming pattern is provided at a location corresponding to the LED of the light emitting surface of the light guide plate, and the dimming pattern includes a main portion covering the LED on the light emitting surface side, and protrusions radially extending toward a light emitting direction of the LED around the LED.

Backlight module and liquid crystal display

Disclosed is a backlight module having light sources and a light guide plate, and the light guide plate has an incident side, and the lights emitted by the light sources pass through the incident side and enter into the light guide plate, and the a light direction changing layer is positioned at the incident side, and the light direction changing layer is employed for changing progress directions of the lights entering the incident side to shorten a distance perpendicular to the incident side from an intersection point of the lights emitted by adjacent light sources to the light sources. The present invention also discloses a liquid crystal display.

Edge type LED backlight unit

A LED backlight unit structure, especially a edge type LED backlight unit, which had a substrate and a one or plurality LED light source lay on the substrate, and a light guide plate 101, which directly couple with the one or plurality LED by using the insert molding technology. A light modulation structure thereon the light guide plate, where near the one or plurality LED light source. A LED backlight unit structure, also can apply light tube or reflecting structure on the light guide plate, and that also can combined with the above-mentioned structures.

SPREAD ILLUMINATING APPARATUS

A spread illuminating apparatus includes: a point light source; a light guide plate; a brightness distribution control lens that controls a spread angle of light emitted from the point light source; and a Fresnel lens that adjusts the spread angle making light to advance along an optical axis in the light guide plate. Multiple prisms extend along a lengthwise direction of an incident light surface and are formed on an emitting surface of the light guide plate or a surface opposite to the emitting surface, and at least some certain prisms in the multiple prisms are formed as that a ratio of the prism depth relative to the thickness of the light guide plate is larger at a side portion of the point light source than at a front portion of the point light source. 1. A spread illuminating apparatus comprising:a point light source;a light guide plate having an incident light surface on which the point light source is arranged and an emitting surface that emits light;a brightness distribution control lens that controls a spread angle of light emitted from the point light source; anda Fresnel lens that adjusts the spread angle making light to advance along an optical axis in the light guide plate,wherein multiple prisms extend along a lengthwise direction of the incident light surface and are formed on the emitting surface of the light guide plate or a surface opposite to the emitting surface, andat least some certain prisms in the multiple prisms are configured as that a ratio of the prism depth relative to the thickness of the light guide plate is adapted to be larger at a side portion of the point light source than at a front portion of the point light source.2. The spread illuminating apparatus according to claim 1 , wherein the multiple prisms contain at least some certain prisms whose depth changes to satisfy that a side portion of the point light source is adapted to be deeper than a front portion of the point light source.3. The spread illuminating apparatus ...

DISPLAY APPARATUS WITH LIGHT GUIDE BASED SOLAR CONCENTRATOR

A display apparatus includes a display, a primary light concentrator, a concentrator light guide, and a solar cell. The primary light concentrator is arranged in tandem with the display, and the primary light concentrator is configured to concentrate incident light into an array of output regions. The concentrator light guide receives light from the primary light concentrator. The concentrator light guide includes light redirecting elements aligned with the output regions of the primary light concentrator to redirect light from the primary light concentrator along the concentrator light guide toward an edge thereof. The solar cell is located adjacent the edge of the concentrator light guide. 1. A display apparatus , comprising:a display;a primary light concentrator arranged in tandem with the display, the primary light concentrator to concentrate incident light into an array of output regions;a concentrator light guide to receive light from the primary light concentrator, the concentrator light guide comprising light redirecting elements aligned with the output regions of the primary light concentrator to redirect light from the primary light concentrator along the concentrator light guide toward an edge thereof; anda solar cell adjacent the edge of the concentrator light guide.2. The display apparatus of claim 1 , in which the display is located between the primary light concentrator and the concentrator light guide claim 1 , and comprises transmissive regions aligned with the output regions of the concentrator.3. The display apparatus of claim 2 , in which:the display comprises pixel sets; andthe pixels of each of the pixel sets and a respective transmissive region are arranged in a one-dimensional array.4. The display apparatus of claim 2 , in which:the display comprises pixel sets; andthe pixels of each of the pixel sets and a respective transmissive region are arranged in a two-dimensional array.5. The display apparatus of claim 2 , in which:the display ...

Side-light display illuminator

A light guide for illuminating a display screen, including a vertical cone-shaped entrance surface including an aperture for admitting light beams emitted by an LED, a folding mirror for reflecting the admitted light beams at an angle of approximately 90°, and for horizontally collimating the admitted light beams, a horizontal guide for guiding the reflected light beams to an exit surface, and an exit surface positioned above a perimeter of a display screen for directing the guided light towards a portion of the display screen, the exit surface being tilted vertically from the horizontal at a slight angle to direct the guided light beams towards the display, and being shaped horizontally as a concave lens to spread the guided light beams horizontally over an angular expanse of the display screen.

SURFACE LIGHT SOURCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

In a surface light source device, a light guide plate includes a light introduction part that traps the light emitted from a point light source and incident from a light incident surface, and a light guide plate body. The light introduction part includes an inclined surface inclined from a surface in a portion having a thickness larger than that of the light guide plate body toward an end of the surface of the light guide plate body. The light guide plate body includes a directivity conversion pattern located between an effective lighting region of the light guide plate body and the light introduction part. The directivity conversion pattern converts a directivity direction of the light from the light introduction part to the effective lighting region such that an angle formed by the directivity direction and a direction perpendicular to the light incident surface decreases when viewed from above. 1. A surface light source device comprising:a light source; anda light guide plate configured to introduce light emitted from the light source through a light incident surface to output the light to an outside through a light exit surface, whereinthe light source is provided at a position facing the light incident surface of the light guide plate,the light guide plate includes a light introduction part configured to trap the light that is emitted from the light source and incident through the light incident surface, and includes a light guide plate body that is provided so as to be continuously joined to the light introduction part, a thickness of the light guide plate body being smaller than a maximum thickness of the light introduction part, the trapped light being output to the outside through the light exit surface by a light exit part,the light introduction part includes an inclined surface in at least one of a surface on a light exit side of the light guide plate and an opposite surface thereof, the inclined surface being inclined from a surface in a portion having a ...

SWITCH, KEYBOARD INSTRUMENT PROVIDED WITH THE SAME, AND LIGHT EMISSION CONTROL CIRCUT

A switch according to the present invention includes: a substrate; a touch sensor; a light guide plate; a light emitting unit; and a control unit. The light guide plate has a surrounding side surface chamfered so that a light entering into the surrounding side surface of the light guide plate diffusely reflects inside the light guide plate. The light emitting unit is arranged at a position facing the surrounding side surface of the light guide plate. The light emitting unit is configured to emit the light to the surrounding side surface of the light guide plate. 1. A switch comprising:a substrate;a touch sensor mounted on the substrate and configured to detect an operator's touch operation relative to the switch;a light guide plate stacked on the touch sensor and having a surrounding side surface chamfered so that a light entering into the surrounding side surface of the light guide plate diffusely reflects inside the light guide plate;a light emitting unit mounted on the substrate and arranged at a position facing the surrounding side surface of the light guide plate, the light emitting unit configured to emit the light to the surrounding side surface of the light guide plate; anda control unit configured to control a light emission of the light emitting unit in accordance with a detection result of the touch sensor for detecting the operator's touch operation.2. The switch according to claim 1 , wherein the surrounding side surface of the light guide plate is cut linearly and into a slant so that an edge of a first surface of the light guide plate is located inside of an edge of a second surface of the light guide plate claim 1 , the second surface being opposite to the first surface claim 1 , and the first surface and second surface of the light guide plate are arranged coaxially.3. The switch according to claim 1 , wherein the light guide plate includes a carved portion formed by carving a part of the light guide plate to form a pattern.4. The switch according ...

LIGHT EMITTING DEVICE WITH LIGHT MIXING WITHIN A FILM

In one embodiment, a light emitting device comprises an array of legs extending from a body of film with the bounding edges of the legs stacked, a first light source emitting light of a first color and a second light source emitting light of a second color into the stacked bounding edges where the light emitting region defined within the body is configured to extract light of a third color. In another embodiment, a light emitting device comprises three light sources positioned to direct light into a stacked array of bounding edges. In one embodiment, a method of generating light of adjustable color exiting a surface of a film is disclosed. 1. A lightguide comprising:a light transmitting film having a body with opposing faces with a thickness not greater than 0.5 millimeters therebetween;a first array of legs formed along a first side of the body of the film wherein: each leg of the first array of legs comprises a first bounding edge at an end thereof; the first bounding edges defining a first light input surface; and each leg of the first array of legs is folded over 90 degrees and stacked to form a first bundle of the first array of legs; anda second array of legs formed along the body of the film wherein: each leg of the second array of legs comprises a second bounding edge at an end thereof; the second bounding edges defining a second light input surface; and each leg of the second array of legs is folded over 90 degrees and stacked to form a second bundle of the second array of legs different from the first bundle2. The lightguide of wherein the first array of legs are sequentially stacked and the second array of legs are sequentially stacked.3. The lightguide of wherein the first light input surface and the second light input surfaces are positioned to receive light from different light sources.4. The lightguide of wherein the second array extends from a second side of the body of the film different from the first side.5. The lightguide of wherein one or more ...

Illumination assembly and display module

An illumination assembly is adapted to illuminate a display module that is visible by reflecting environmental lights. The illumination assembly includes a substrate, a visual-light source, and a light guide. The substrate includes a top surface. The visual-light source is disposed on the top surface and is provided for emitting a visual light. The light guide is disposed corresponding to the top surface of the substrate. The light guide includes a light-incidence surface and a light-emergence surface. The visual light enters the light guide through the light-incidence surface and is reflected at least once. The visual light then exits the light guide through the light-emergence surface and travels along a light-emergence direction.

BLADE OF LIGHT LUMINAIRE

A luminaire comprising a rectangular waveguide is provided. The waveguide includes four sides and opposed planar surfaces. A light module directs light into only one of the sides at least. One of the planar surfaces includes a specular reflection surface directing light to exit through the opposed planar surface. 1. A luminaire comprising a rectangular waveguide , said waveguide including four edges and opposed planar surfaces , a light module directing light into only one of said edges , at least one of said planar surfaces including a reflective surface directing light to exit through the opposed planar surface.2. The luminaire of claim 1 , wherein each planar surface includes a reflective surface directing light to exit through the opposed planar surface.3. The luminaire of claim 1 , wherein said waveguide has a thickness of less than 50 mm between opposed planar surfaces.4. The luminaire of wherein said light module includes a plurality of light emitting diodes (LEDs).5. The luminaire of wherein said rectangle is a square.6. The luminaire of wherein light is emitted substantially from only one planar surface.7. The luminaire of wherein the ratio of surface area of one planar surface to waveguide thickness is at least 5 claim 3 ,000:1.8. The luminaire of including a mounting structure associated with the edge including said light module.9. The luminaire of wherein an edge opposed to said edge including said mounting structure is free floating in a mounted condition.10. The luminaire of wherein said mounting structure and said light module comprise an integral body.11. The luminaire of wherein light exits said planar surface diffusely.12. The luminaire of wherein at least one edge includes a reflector.13. The luminaire of claim herein one planar surface includes a light reflective layer.14. The luminaire of wherein at least one of said planar surfaces includes a plurality of microlenses.15. The luminaire of wherein a first planar surface emits more light than the ...

Light emitting device comprising a lightguide film and aligned coupling lightguides

A light emitting device includes a film-based lightguide and coupling lightguides having ends stacked and aligned. In one embodiment, the light emitting device comprises a relative position maintaining element that extends beyond the light input surface defined by the stacked ends of an array of coupling lightguides. In another embodiment, a light emitting device comprises an alignment guide or cavity.

LIGHT-GUIDING PLATE AND PLANE ILLUMINATION APPARATUS THEREWITH

A light-guiding plate and a plane illumination apparatus therewith are disclosed. The plane illumination apparatus includes the light-guiding plate and at least one light-emitting source. The light-guiding plate includes a light incident surface, a first surface opposite to the light incident surface, a second surface between the light incident surface and the first surface, and a light emitting surface opposite to the second surface. The second surface is coated with diffuse reflection layer. The first surface gradually extends substantially toward the light incident surface from its one side near to the second surface to the other side near to the light emitting surface. The light-emitting source is disposed corresponding to the light incident surface for providing a light beam. 1. A light-guiding plate , applied to an illumination apparatus comprising the light-guiding plate and at least one light-emitting source providing a light beam , the light-guiding plate comprising:a light incident surface;a first surface opposite to the light incident surface;a second surface located between the light incident surface and the first surface and coated with a second diffuse reflection layer; anda light emitting surface opposite to the second surface;wherein the first surface has a first side close to the second surface, and a second side close to the light emitting surface;the first surface extends substantially toward the light incident surface from the first side to the second side;wherein a first portion of the light beam is diffusely reflected by the second surface and then passes through the light emitting surface out of the light-guiding plate.2. The light-guiding plate of claim 1 , further satisfying the following condition:{'br': None, 'i': 'W/D<', '0<0.6;'}wherein W is a width of a projection area of the first surface onto the second surface, and D is a projection distance of the second side of the first surface to the second surface.3. The light-guiding plate of ...

Led light source mechanism, telephone set, and method for forming led light source

One LED is used as an LED light source mechanism that illuminates an illumination surface, the illumination surface being laterally long and wide in a left/right direction, in which a central axis of the LED is disposed at a position on a center line vertically extending from a central part in the left-right direction of the illumination surface in such a manner that the LED faces the illumination surface, and two reflection surfaces are formed in a conical shape on a reflection surface forming place so as to surround the illumination surface, a light guide part, and the LED, and a center line of the conical shape is disposed on the central axis of the LED, the two reflection surfaces being configured to reflect light that is emitted from the LED toward an outside of the illumination surface.

VEHICLE INTERIOR LIGHTING SYSTEM

A vehicle interior lighting system includes an illuminating unit provided in an interior of a vehicle, an imaging unit that captures a depth image including a distance to an object person in the interior, an estimating unit that estimates a three-dimensional human body model of an object person from a depth image captured by the imaging unit, a predicting unit that predicts a movement intention of an object person in an interior based on the human body model estimated by the estimating unit, and an operation controller that controls lighting of the illuminating unit according to the movement intention predicted by the predicting unit. 1. A vehicle interior lighting system comprising:an illuminating unit provided in an interior of a vehicle;an imaging unit that captures a depth image including a distance to an object person in the interior;an estimating unit that estimates a three-dimensional human body model of the object person from the depth image captured by the imaging unit;a predicting unit that predicts a movement intention of the object person in the interior based on the human body model estimated by the estimating unit; andan operation controller that controls lighting of the illuminating unit according to the movement intention predicted by the predicting unit.2. The vehicle interior lighting system according to claim 1 , whereinthe illuminating unit has a plurality of lighting devices, andthe operation controller turns on the lighting devices near the object person whose movement intention is predicted by the predicting unit.3. The vehicle interior lighting system according to claim 2 , whereinthe predicting unit predicts a destination of the object person in the interior based on the human body model estimated by the estimating unit, andthe operation controller turns on the lighting devices at the destination predicted by the predicting unit.4. The vehicle interior lighting system according to claim 3 , whereinthe operation controller turns off the ...

SLIM WAVEGUIDE COUPLING APPARATUS AND METHOD

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure. 112.-. (canceled)13. An illumination structure comprising:a waveguide having (i) top and bottom opposed surfaces, (ii) an in-coupling region for receiving light, (iii) an out-coupling region for emitting light from the waveguide, and (iv) a depression in the top surface thereof;a plurality of discrete light sources disposed proximate the waveguide and positioned to emit light into the in-coupling region, wherein the depression reflects a first portion of light emitted by the discrete light sources into the waveguide and transmits a second portion of light emitted by the discrete light sources through the depression;disposed over the depression, an absorber for preventing transmission of at least a portion of the second portion of light therethrough; anddisposed between the absorber and the discrete light sources, a phosphor layer for converting a wavelength of light emitted by at least one of the discrete light sources to a different wavelength.14. The illumination structure of claim 13 , wherein the plurality of discrete light sources comprises at least three discrete light sources.15. The illumination structure of claim 13 , wherein the plurality of discrete light sources comprises at least four discrete light sources.16. The illumination structure of claim 13 , wherein at least two of the discrete light sources emit light of substantially the same wavelength.17. The illumination structure of claim 13 , wherein at least two of the discrete light sources emit light of different wavelengths.18. The illumination structure of claim 13 , wherein a thickness of the waveguide ...

Ligth source module and light guide plate

A light source module and a LGP are provided, the light source module includes the LGP, a light source and an optical film. The LGP includes a bottom surface, a light-emitting surface, a light incident surface and a reflection surface. A projection of the reflection surface on the light-emitting surface has an arc shape. The optical film is disposed on the light-emitting surface, and includes a plurality of prism columns in arrangement. The bottom surface has a plurality of microstructures, and each microstructure has a first surface and a second surface. The first surface is closer to the light incident surface compared to the second surface, and an included angle between the first surface and the bottom surface ranges between 1 and 10 degrees. The light source module of the invention effectively narrows horizontal and vertical viewing angles, and light and slim tendency of the light source module is satisfied.

MULTI-STAGE OPTICAL WAVEGUIDE FOR A LUMINAIRE

According to one aspect, an optical waveguide includes a first waveguide portion and a second waveguide portion adjacent to and separate from the first waveguide portion. The waveguide portions include light coupling portions that are at least partially aligned and adapted to receive light developed by a light source. The first waveguide portion further has a first major surface with light direction features and a second major surface opposite the first major surface. The second waveguide portion further has a third major surface proximate the second major surface with an air gap disposed therebetween and a fourth major surface opposite the third major surface wherein the fourth major surface includes a cavity extending therein. 1. An optical waveguide , comprising:a plurality of waveguide portions arranged in a stack;each waveguide portion having a coupling surface and a surface opposite the coupling surface;wherein the coupling surface of a first waveguide portion is aligned with a light source and adapted to receive light developed by the light source; andwherein each next waveguide is aligned with each previous waveguide such that light escaping through the surface opposite the coupling surface of each previous waveguide is received by the coupling surface of the next waveguide.2. The optical waveguide of claim 1 , wherein each waveguide portion is substantially identical.3. The optical waveguide of claim 1 , wherein each waveguide portion is cylindrical.4. The optical waveguide of claim 1 , wherein each waveguide portion has a cavity disposed opposite the coupling surface.5. The optical waveguide of claim 4 , wherein the cavity of at least one waveguide portion has a parabolic shape claim 4 , a frustum shape claim 4 , a conical shape claim 4 , an elliptic paraboloid shape claim 4 , a frustoconical shape claim 4 , or a combination of such shapes.6. The optical waveguide of claim 1 , wherein substantially all of the light is extracted through surfaces other than ...

OPTICAL COMPONENT HAVING VARIABLE DEPTH GRATINGS AND METHOD OF FORMATION

An optical grating component may include a substrate, and an optical grating, the optical grating being disposed on the substrate. The optical grating may include a plurality of angled structures, disposed at a non-zero angle of inclination with respect to a perpendicular to a plane of the substrate, wherein the plurality of angled structures are arranged to define a variable depth along a first direction, the first direction being parallel to the plane of the substrate. 2. The optical grating of claim 1 , wherein the plurality of angled structures extend along a second direction claim 1 , perpendicular to the first direction claim 1 , and wherein a grating height of an angled structure along the second direction is uniform.3. The optical grating component of claim 2 ,wherein the optical grating is a first optical grating,the optical grating component further comprising a second optical grating, the second optical grating comprising a second plurality of angled structures, disposed at a second non-zero angle of inclination with respect to the perpendicular to the plane of the substrate, wherein the second plurality of angled structures are arranged to define a second variable depth along the second direction.4. The optical grating component of claim 1 , wherein the optical grating comprises silicon oxide claim 1 , silicon nitride claim 1 , or a glass.5. The optical grating component of claim 1 , wherein the optical grating comprises a grating height in a range of 100 nm to 1000 nm claim 1 , wherein the optical grating comprises a grating height variation of 10%-40%.6. The optical grating component of claim 1 , wherein the optical grating is disposed in a grating layer claim 1 , the optical grating component further comprising an etch stop layer claim 1 , disposed between the substrate and the grating layer.7. The optical grating component of claim 6 , wherein the etch stop layer comprises a thickness of 10 nm to 100 nm.8. The optical grating component of claim 6 , ...

LIGHT GUIDING LENS AND LIGHTING UNIT

An elongated light guiding lens can include an incident portion and a light guiding portion with an L-shaped cross section. The incident portion can be erected at a rear end portion of the light guiding portion, and have a second incident surface at its left end, for receiving light from an LED while collimating the light in the vertical direction. The light guiding portion can extend forward while expanding leftward more than the position corresponding to the second incident surface, and include a second reflection surface provided below the second incident surface to internally reflect the light from the second incident surface toward a side reflection surface of a left end side surface. The side reflection surface can include a plurality of first lens cuts configured to internally reflect the light reflected by the second reflection surface to a light exiting surface of the front surface portion. 1. A light guiding lens configured to project light in a light-irradiating direction , the light guiding lens comprising:an incident portion configured to receive light emitted from a light source so that the light can enter the light guiding lens; anda light guiding portion having a rear end portion and a front surface portion, the light guiding portion being configured to guide the light entering through the incident portion to cause the light to exit through the front surface portion, the light guiding lens being extended from the rear end portion to the front surface portion in the light-irradiation direction and also in a second direction crossing the light-irradiation direction, whereinthe incident portion is provided at the rear end portion of the light guiding portion to be erected therefrom,the incident portion includes an incident surface that is disposed at one longitudinal end portion of the incident portion on one end side and configured to receive light from the light source to cause the light to enter the incident portion and to be in parallel to a ...

MULTI-ZONE BACKLIGHT, MULTIVIEW DISPLAY, AND METHOD

A multi-zone backlight and multi-zone multiview display with multiple zones selectively provide broad-angle emitted light corresponding to a two-dimensional (2D) image and directional emitted light corresponding to a multiview image to each zone of the multiple zones. The multi-zone backlight includes broad-angle backlight to provide the broad-angle emitted light and a multiview backlight to provide the directional emitted light. Each of the broad-angle backlight and the multiview backlight is divided into a first zone and a second zone that may be independently activated to provide the broad-angle emitted light and multiview emitted light, respectively. The multi-zone multiview display includes the broad-angle backlight and the multiview backlight and further includes an array of light valves configured to modulate the broad-angle emitted light as a two-dimensional image and the directional emitted light as a multiview image on a zone-by-zone basis. 1. A multi-zone backlight comprising:a broad-angle backlight having a first zone and a second zone, each of the first and second zones of the broad-angle backlight being configured to independently provide broad-angle emitted light when activated; anda multiview backlight divided into a first zone and a second zone, each of the first and second zones of the multiview backlight being configured to independently provide directional emitted light comprising directional light beams having directions corresponding to different view directions of a multiview image when activated,wherein the multiview backlight is adjacent to the broad-angle backlight and transparent to the broad-angle emitted light, the first and second zones of the multiview backlight corresponding to and being aligned with respective ones of the first and second zones of the broad-angle backlight.2. The multi-zone backlight of claim 1 , wherein the first zones of each of the broad-angle backlight and the multiview backlight are configured to be ...

Backlight having collimating reflector

A backlight includes a plate light, guide to guide light, a light source to produce light, and a collimating reflector to substantially collimate the produced light. The collimating reflector also is to direct that collimated light into the plate light guide as guided light of the plate light guide. A portion of the guided light in the backlight is to be emitted from a surface of the backlight as emitted light.

OPTICAL DEVICE AND ILLUMINATION DEVICE

An optical device comprises: at least one first reflecting surface disposed so as to reflect first light that has a light distribution having an optical axis parallel to a first axis, to an arc-shaped first region surrounding the first axis; and a second reflecting surface and a third reflecting surface that are disposed such that the second reflecting surface and the third reflecting surface meet each other on the first axis, and such that the first reflecting surface is disposed between the second reflecting surface and the third reflecting surface. 1. An optical device comprising:at least one first reflecting surface disposed so as to reflect at least a part of first light to an arc-shaped first region surrounding a first axis, the first light having a light distribution with an optical axis parallel to the first axis; anda second reflecting surface and a third reflecting surface that are disposed such that the second reflecting surface and the third reflecting surface meet each other on the first axis, and such that the at least one first reflecting surface is disposed between the second reflecting surface and the third reflecting surface.2. The optical device according to claim 1 , wherein the second reflecting surface and/or the third reflecting surface meets the at least one first reflecting surface.3. The optical device according to claim 1 , wherein the at least one first reflecting surface comprises a plurality of first reflecting surfaces separated from each other in a direction along the first axis.4. The optical device according to claim 3 , wherein: the plurality of first reflecting surfaces, and', 'a plurality of transmitting surfaces, each corresponding to a respective one of the plurality of first reflecting surfaces,', 'wherein the plurality of first reflecting surface and the plurality of transmitting surfaces form a multi-stepped inner surface of the optical element, and, 'the optical device comprises an optical element that comprisesthe optical ...

NEAR EYE DISPLAY PROJECTOR

A near eye display apparatus includes: a lens having a viewing area, the lens comprising a waveguide having a waveguide input and a waveguide output optically coupled to the viewing area; an optical projector having a projector output, the optical projector comprising an illumination source optically coupled to the optical prism element and configured to provide illumination light into the optical prism element at a particular direction, a spatial light modulator optically coupled to the optical prism element and configured to receive the illumination light from the optical prism element and to reflect patterned light, the optical prism element configured to provide the patterned light to the projector output at the particular direction; and an optical folding element optically coupled between the projector output and the waveguide input, the optical folding element configured to fold an optical path of the patterned light in at least two different directions. 1. A display apparatus , comprising:a lens having a viewing area, the lens comprising a waveguide having a waveguide input and a waveguide output, and the waveguide output optically coupled to the viewing area;an optical projector having a projector output, the optical projector comprising an optical prism element, a spatial light modulator and an illumination source, the illumination source optically coupled to the optical prism element and configured to provide illumination light into the optical prism element at a particular direction, the spatial light modulator optically coupled to the optical prism element and configured to receive the illumination light from the optical prism element and to reflect patterned light, and the optical prism element configured to provide the patterned light to the projector output at the particular direction; andan optical folding element optically coupled between the projector output and the waveguide input, the optical folding element configured to fold an optical path of ...

Light guide plate, and method and mold for manufacturing the same

The present invention provides a light guide plate and a method and a mold for manufacturing the same. The light guide plate comprises at least one incident surface, an exiting surface and a bottom surface, the exiting surface and bottom surface being disposed facing to each other and both being connected to the incident surface, the light guide plate having a cavity formed therein, wherein light incident from the incident surface exits the exiting surface after refracted and/or reflected by the cavity. With the light guide plate, light energy loss can be reduced and brightness of pictures can be improved.

LARGE-SENSING-AREA UNDER-DISPLAY OPTICAL SENSOR

Optical sensing is provided with a large sensing area in a thin package. For example, embodiments can operate in context of an under-display optical fingerprint sensor integrated into an electronic device, such as a smartphone. Responsive to reflected probe light passing through a display module, a reflective structure is configured to redirect the reflected probe light onto a refractive structure, and the refractive structure is configured to converge the reflected probe light into an input aperture of an optical sensor for detection. Some embodiments operate in context of an enhancement panel having micro-prism structures that tend to blur the reflected probe light. In such context, embodiments are configured for off-axis detection to prefer light passing through only certain micro-prism faces, thereby mitigating blurring. 1. An electronic device comprising:a display module that defines a display plane, and an optical sensing module having an input aperture oriented substantially parallel to the display plane, the optical sensing module to derive optical information from received illumination energy;', 'a refractive structure; and', 'a reflective structure to receive reflected probe light passing through the display module and to redirect light paths of the reflected probe light toward the refractive surface,', 'wherein the refractive structure is to receive reflected probe light from the reflective structure and to bend the light paths of the reflected probe light to converge on the input aperture of the optical sensing module., 'an under-display optical sensing system positioned below the display module and comprising2. The electronic device of claim 1 , wherein the refractive structure and the reflective structure are configured so that one of the light paths passing through the display module in a first direction substantially normal to the display plane is redirected by the reflective structure and bent by the refractive structure so as to enter the input ...

Backlight unit and display apparatus using the same

Disclosed are an illumination system and a display apparatus using the same. The illumination system includes a light guide plate; grooves disposed in the light guide plate, each of the grooves having at least one inclined surface; light source modules disposed within the grooves, wherein the light source modules comprise, substrates and light sources disposed on the substrates; and stoppers disposed between a first surface of each of the light sources and the at least one inclined surface of each of the grooves, the first surface of each of the light sources facing the at least one inclined surface. A cross-sectional area of the grooves is larger than that of the stoppers.

LIGHT GUIDE PLATE, BACKLIGHT MODULE AND DISPLAY DEVICE

A light guide plate includes a first light emitting surface and a second light emitting surface. The first light emitting surface and the second light emitting surface are connected by an inclined surface. The first light emitting surface is connected to the light incident surface of the light guide plate and is higher than the second light emitting surface, and the inclined surface is provided with a protruding structure. According to the technical solutions in the embodiments of the present disclosure, part of the light projected onto the inclined surface is reflected back to the light guide plate by the protruding structure and reflected back and forth between the bottom surface of the light guide plate and the inclined surface to be sufficiently mixed and homogenized. A part of the homogenized light emits from the second light emitting surface to compensate for a longitudinal brightness difference. Another part of the homogenized light exits from the protruding structure on the inclined surface and the first light emitting surface, thereby reducing the transverse brightness difference. Thus, the poor user experience such as dazzling can be reduced and the viewing effect can be improved. 1. A light guide plate , comprising: a light incident surface , a first light emitting surface , an inclined surface and a second light emitting surface , wherein ,the first light-emitting surface and the second light-emitting surface are connected by the inclined surface,the first light emitting surface is connected to the light incident surface and higher than the second light emitting surface,the inclined surface is provided with a protruding structure.2. The light guide plate according to claim 1 , wherein the protruding structure comprises a plurality of sub-protruding structures claim 1 , each sub-protruding structure comprising a sub-curved surface for partially reflecting light emitted from the inclined surface claim 1 , the generatrix of the sub-curved surface is ...

LENS, LIGHT SOURCE DEVICE, BACKLIGHT UNIT, AND ELECTRONIC DEVICE

The present disclosure relates to a light diffusion characteristic and a light reflection characteristic, and a light source device, a backlight unit, and an electronic device that include the lens. By causing the light emitted from the light source of the light source device to have both light diffusibility and light directivity using the lens including a lower layer portion having a light diffusion characteristic and an upper layer portion having a light reflection characteristic, it is possible to improve a light emission characteristic of the light source device, and when an optical gap is reduced due to the thickness reduction of the backlight unit, the image quality of the backlight unit can be improved. 1. A backlight unit comprising:a light source;a lens including a first concave portion defined on a bottom surface of the lens where the light source is disposed, and a second concave portion defined on a top surface of the lens, wherein the light source emits refracted light to diffuse to outside in a region between a first point and a second point in a vertical direction and at least a part of the light emitted from the light source reflects to the outside in a region between the second point and the third point;a diffuser plate disposed on the lens and spaced apart from the lens; anda cover bottom accommodating the light source, the lens, and the diffuser plate.2. The backlight unit of claim 1 , wherein the lens includes an outer surface having a convex shape between the first point and the second point and a concave shape between the second point and the third point.3. The backlight unit of claim 1 , wherein the lens includes an outer surface having a concave portion between the first point and the second point and a concave shape between the second point and the third point claim 1 , and a first curvature between the first point and the second point and a second curvature between the second point and the third point claim 1 , wherein the first and second ...

Light Guide

A light guide includes a body transmittable to light and a plurality of light guiding elements. The body includes a first end face on an end thereof. The body further includes a light emitting portion, a deflecting portion, and two lateral sides. The light emitting portion and the deflecting portion are opposite to each other. Each of the two lateral sides is connected to the light emitting portion and the deflecting portion. The first end face is connected to the deflecting portion and each of the two lateral sides. Each light guiding element includes a curved face. The curved face is a conical surface or a part of the conical surface. The curved face is coupled to the deflecting portion. The light guiding elements can be arranged on the deflecting portion in one or more rows to control the light output directions and to reduce the illuminating angle.

VEHICLE MIRROR DEVICE

A door mirror device has a main mirror having a first reflecting surface that enables a periphery of a vehicle to be viewed, and a sub-mirror that is disposed adjacent to the main mirror. The sub-mirror includes a light guide having a light guiding portion into which light from an LED is introduced. A second reflecting surface, that enables a periphery of the vehicle to be viewed, is provided at a surface of the light guide. Further, a light portion, that illuminates, toward an out-of-plane direction of the second reflecting surface, light from the LED that has been introduced into the light guide interior, is provided at the second reflecting surface. 1. A vehicle mirror device comprising:a first mirror that is provided at a vehicle and that has a first reflecting surface that reflects light; anda second mirror disposed adjacent to the first mirror and structured to include a light guide that has a light guiding portion into whose interior light from a light source is introduced, a second reflecting surface that is provided at a surface of the light guide and that reflects light, and a light portion that is provided at the second reflecting surface and that is lit by the light that is introduced into the light guide interior.2. The vehicle mirror device of claim 1 , wherein claim 1 , at a boundary of the first mirror and the second mirror claim 1 , the first reflecting surface and the second reflecting surface are disposed so as to be offset in a thickness direction of the first mirror.3. The vehicle mirror device of claim 1 , wherein the light guiding portion is disposed so as to face the first mirror in a thickness direction of the first mirror.4. The vehicle mirror device of claim 2 , wherein the light guiding portion is disposed so as to face the first mirror in a thickness direction of the first mirror. The present invention relates to a vehicle mirror device.A vehicle mirror device, that makes it possible to view a vehicle obliquely rear side over a wider ...

SCANNING TYPE BACKLIGHT MODULE AND DISPLAY DEVICE

The embodiments of the invention disclose a scanning type backlight module and a display device. Since a laser light source with good collimation is applied, during a display time of a frame, with the modulation of the optical path regulator, the laser emitted from the laser light source performs a progressive scanning for a region corresponding to at least one row of pixel units in a light guide plate or a display panel. Therefore, the problem of dynamic picture ghosting can be solved effectively; moreover, since the progressive scanning for the entire light guide plate can be realized by changing the light propagation path of the laser emitted from the laser light source with the optical path regulator, the number of the laser light sources can be reduced and the production cost can be decreased. 1. A scanning type backlight module comprising:a light guide plate;a laser light source; andan optical path regulator located between the laser light source and a light incident surface of the light guide plate;wherein the light guide plate is divided into a plurality of light guide regions, each of the light guide regions corresponding to at least one row of pixel units in a display panel; andwherein during a display time of a frame, with modulation of the optical path regulator, a laser emitted from the laser light source performs a progressive scanning for each of the light guide regions in the light guide plate.2. The scanning type backlight module according to claim 1 , wherein a lateral side of the light guide plate has a stepped structure corresponding to the light guide regions in a one-to-one correspondence; and wherein with modulation of the optical path regulator claim 1 , the laser emitted from the laser light source is guided toward the stepped structure and illuminates a corresponding light guide region after a total reflection at the stepped structure.3. The scanning type backlight module according to claim 2 , wherein the light guide plate has a refractive ...

DISPLAY ASSEMBLY AND DISPLAY APPARATUS USING THE SAME

The display assembly includes: a light source configured to emit light; a light guide plate disposed to receive light emitted from the light source on a lateral side; and a color transformer disposed proximate to an edge of the light guide plate, and configured to change a color of light incident to the color transformer. 1. A display assembly comprising:a light source configured to emit light;a light guide plate disposed to receive light emitted from the light source on a lateral side;a quantum dot sheet comprising a first surface and a second surface, the first surface being in contact with a surface of the light guide plate; anda color transformer configured to change a color of light incident to the color transformer,wherein a part of the color transformer is disposed on an edge of the second surface of the quantum dot sheet near the light source and separated from the light guide plate.2. The display assembly according to claim 1 , further comprising a light absorber disposed in contact with the color transformer claim 1 , and configured to absorb light emitted from the light source.3. The display assembly according to claim 2 , wherein the light absorber is disposed on a lateral side of the color transformer nearest to the light source.4. The display assembly according to claim 2 , wherein the light absorber is disposed on a surface of the color transformer opposite a surface of the color transformer onto which light from the light source is incident.5. (canceled)6. The display assembly according to claim 1 , wherein the color transformer is disposed on a surface of the quantum dot sheet that is opposite to the surface of the quantum dot sheet on which the light guide plate is disposed.7. The display assembly according to claim 1 , wherein the quantum dot sheet and the color transformer are disposed on a same surface of the light guide plate claim 1 , and the color transformer is disposed alongside the quantum dot sheet.8. The display assembly according to ...

WHITE LIGHT SOURCE

A white light source includes an array of light emitting elements arranged to a light guide. 1. A white light source comprising an array of non-white light emitting elements each of said light emitting elements being arranged to provide , in operation , a divergent light beam , said array of light emitting elements being arranged to a light guide comprising at least a first surface and a second surface facing said first surface ,wherein:said light emitting elements are arranged on a substrate comprising at least one electrical conducting wire connected to said light emitting elements;at least a light incoupling array comprises light incoupling elements arranged on said first surface, each of said light emitting elements facing a light incoupling elements;said substrate being separated from said first surface by at least a gap layer;said gap layer having an effective refractive index at least 0.2 lower than a refractive index of the light guide;{'sub': '1', 'each of said light incoupling elements being arranged to incouple in said light guide a portion of said divergent light beam, said portion defining an incoupled light beam, said incoupling elements being further arranged so that the in-coupled angle of at least a part of the light rays of said in-coupled light beam are higher than 45°, said in-coupled angles being defined relative to a normal (N) of said first surface;'}{'sub': '2', 'at least an array of light homogenizing elements is arranged on said second surface, each of said light homogenizing elements facing a light in-coupling element, said light homogenizing elements being non-uniform structures arranged so that the deflection angle of at least a fraction of the incident part of said in-coupled light beam incident on each of said homogenizing elements is higher than 45°, said deflection angle (δ) being defined as the absolute sum of the incident angle and the reflected angle of a light ray of said incident part, both angles being defined relative to a ...

Light source module and backlight unit including the same

The present disclosure provides a light source module that includes a substrate, a plurality of light barriers on a surface of the substrate and spaced apart from each other, a plurality of light source packages on the surface of the substrate and positioned between the plurality of light barriers, and a total-reflection induction layer on the plurality of light source packages. The total-reflection induction layer has a flat surface opposite the plurality of light source packages. According to the various embodiments provided herein, the amount of light incident on a light guide plate increases, and a heat radiation effect is improved.

Methods, Systems, and Products for Image Displays

Methods, systems, and products illuminate display devices. An image is injected into a waveguide. The image propagates at total internal reflectance within the waveguide. A frustrator withdraws a frustrated image from the waveguide, and the frustrated image may be displayed to a viewer. 1. A display device , comprising:a waveguide;a projector for injecting an image into the waveguide, the image reflecting at total internal reflectance within the waveguide; anda frustrator applied to a surface of the waveguide, the frustrator for withdrawing the image through the surface of the waveguide;wherein the image is visible to a viewer through the surface of the waveguide.2. The display device of claim 1 , further comprising a battery providing electrical power to the projector.3. The display device of claim 1 , wherein the frustrator is a coating applied to the surface of the waveguide.4. The display device of claim 1 , wherein the frustrator is a film applied to the surface of the waveguide.5. The display device of claim 1 , further comprising a reflective material applied to the surface of the waveguide to reflect the image.6. The display device of claim 1 , further comprising a magnifier that magnifies the image withdrawn by the frustrator.7. The apparatus of claim 1 , further comprising a diffuser that diffuses the image withdrawn by the frustrator.8. A method claim 1 , comprising:injecting, by a projector, an image into a waveguide;reflecting, within the waveguide, the image at total internal reflectance;applying a frustrator to a surface of the waveguide; andwithdrawing a frustrated image through the surface of the waveguide;wherein the frustrated image is visible to a viewer through the surface of the waveguide.9. The method of claim 8 , further comprising providing a battery for electrical power to the projector.10. The method of claim 8 , further comprising withdrawing the frustrated image using a coating applied to the surface of the waveguide.11. The method of ...

UNIFORM, EFFICIENT, AND COLOR TUNABLE RING FLASH FOR CAMERA USING LEDS WITH LIGHT EMISSION FROM MULTIPLE SIDES

A device includes a light-emitting device (LED) having at least two vertical light-emitting sides, and a ring-shaped light guide having a bottom side, a top side comprising a light-emitting surface, an inner sidewall, and an outer sidewall defining an indentation having at least two vertical in-coupling surfaces mated to the at least two vertical light-emitting sides of the LED. 1. A light guide module , comprising:a light-emitting diode; anda ring-shaped light guide comprising a light guide body having a bottom side, a top side comprising a light-emitting surface, an inner sidewall, an outer sidewall, and an indentation comprising at least two vertical in-coupling surfaces,wherein the light emitting diode comprises at least two vertical light-emitting sides,wherein the outer sidewall defines the indentation comprising the at least two vertical in-coupling surfaces, andwherein the at least two vertical in-coupling surfaces mate to the at least two vertical light-emitting sides of the light-emitting diode.2. The light guide module according to claim 1 , further comprising a light guide bezel surrounding the ring-shaped light guide.3. The light guide module according to claim 1 , further comprising a printed circuit board claim 1 , wherein the light-emitting diode and the ring-shaped light guide are mounted on the printed circuit board.4. The light guide module according to claim 1 , wherein the bottom side is textured to extract light from the ring-shaped light guide through the top side.5. The light guide module according to claim 1 , wherein the ring-shaped light guide further comprises ink dots on the bottom side to extract light from the ring-shaped light guide through the top side.6. The light guide module according to claim 1 , wherein light from the light-emitting diode travels around the light guide by total internal reflection.7. The light guide module according to claim 1 , wherein the ring-shaped light guide further comprises a reflector film on the inner ...

Unilateral backlight, multiview display, and method employing slanted diffraction gratings

A unilateral backlight and a unilateral multiview display employ an array of unilateral diffractive elements configured to provide directional light beams having a unilateral direction. A unilateral diffractive element of the unilateral diffractive element array comprises a slanted diffraction grating configured to provide a directional light beam by diffractive scattering of light guided in a light guide. The unilateral multiview display further includes light valves configured to modulate a plurality of directional light beams as multiview image having the unilateral direction.

Light emitting device comprising a lightguide with a glass core layer

In one aspect, a light emitting device comprises a lightguide formed from a film with a glass core layer and a thickness less than 0.5 millimeters, a plurality of strips extending from a lightguide region forming a light input surface, a light emitting region, and a light source positioned to emit light into the light input surface. In one embodiment, the light emitting device comprises a cladding layer optically coupled to the glass core layer. In one embodiment, a largest dimension of the light emitting region in a plane comprising the light emitting region divided by an average thickness of the glass core layer in the light emitting region is greater than 500. The light source may comprise a peak wavelength between 350 nanometers and 400 nanometers or between 800 nanometers and 1200 nanometers. The glass core layer may be a borosilicate glass.

LIGHT SOURCE DEVICE AND PROJECTOR

A light source device includes a light source emitting first light in a first wavelength band, a light guide section guiding partial light of the first light, a wavelength conversion section including a phosphor, which other partial light of the first light, and which converts the other partial light into second light in a second wavelength band. A light guide section first side surface and a wavelength conversion section second side surface are opposed. The first side surface has a diffraction grating. The partial light enters the light guide section from the first side surface via the diffraction grating. The other partial light enters the wavelength conversion section from the second side surface. The partial and second lights are emitted in one of a normal direction of the first end surface of the light guide section and a normal direction of the third end surface of the wavelength conversion section. 1. A light source device comprising:a light source configured to emit first light in a first wavelength band;a light guide section which partial light of the first light emitted from the light source enters, and which guides the partial light; anda wavelength conversion section which includes a phosphor, which other partial light of the first light emitted from the light source enters, and which converts the other partial light into second light in a second wavelength band different from the first wavelength band, whereinthe light guide section has a first end surface and a second end surface opposed to each other, and a first side surface crossing the first end surface and the second end surface,the wavelength conversion section has a third end surface and a fourth end surface opposed to each other, and a second side surface crossing the third end surface and the fourth end surface,the first side surface of the light guide section and the second side surface of the wavelength conversion section are disposed so as to be opposed to each other,the first side surface ...

Light-Emitting Device with Remote Scattering Element and Total Internal Reflection Extractor Element

A variety of light-emitting devices are disclosed that are configured to output light provided by a light-emitting element (LEE). In general, embodiments of the light-emitting devices feature a light-emitting element, a scattering element that is spaced apart from the light-emitting element and an extractor element coupled to the scattering element, where the extractor element includes, at least in part, a total internal reflection surface. Luminaires incorporating light-emitting devices of this type are also disclosed.

IMAGE CAPTURE APPARATUS

An image capture apparatus including a light guide device, a transparent device, a light source and an image capture device is provided. The light guide device includes a top surface, a bottom surface opposite to the top surface, a light incident surface connected between the top surface and the bottom surface and a light emitting surface opposite to the top surface. The bottom surface is connected between the light incident surface and the light emitting surface. An acute angle a is included between the light incident surface and the top surface. The transparent device is disposed on the top surface of the light guide device. The light source is used to emit a light beam. The image capture device is disposed on the light emitting surface of the light guide device. 1. An image capture apparatus , located in an environment medium , comprising: a top surface;', 'a bottom surface, opposite to the top surface;', 'an light incident surface, connected between the top surface and the bottom surface, wherein an acute angle a is included between the light incident surface and the top surface; and', 'a light emitting surface, opposite to the top surface, wherein the bottom surface is connected between the light incident surface and the light emitting surface;, 'a light guide device, comprisinga transparent device, disposed on the top surface of the light guide device;a light source, used to emit a light beam, wherein the light beam passing ough the light incident surface is transmitted toward the transparent device and totally reflected by an interface between the transparent device and the environment medium; andan image capture device, disposed on the light emitting surface of the light guide device.3. The image capture apparatus according to claim 2 , wherein the light incident surface of the light guide device has a recess claim 2 , the light source is disposed in the recess claim 2 , and the image capture apparatus further comprises:an optical adhesive, filled in the ...

LIGHT GUIDES WITH LOW REFRACTIVE COATING TO BE USED IN WATER

The invention provides a light guide element comprising a light guide and a layer element, wherein the light guide comprises a light guide face and wherein the layer element comprises an optical layer, wherein said optical layer is in contact with at least part of the light guide face, wherein the optical layer has a first index of refraction (n1) smaller than the refractive index of seawater, wherein the light guide comprises a UV radiation transmissive light guide material. 1. A light guide element comprising:a light guide, wherein the light guide comprises a light guide face; anda layer element, wherein the layer element comprises an optical layer,wherein the optical layer is in contact with at least part of the light guide face,wherein the optical layer has a first index of refraction,wherein the light guide comprises a transmissive light guide material for UV radiation, and{'b': '1', 'wherein the optical layer has a first index of refraction (n) that is smaller than a refractive index of seawater at a wavelength of the UV radiation.'}2. The light guide element according to claim 1 ,wherein the optical layer is a patterned optical layer,wherein the patterned optical layer comprises first regions and second regions,wherein one or more of the first regions comprise an optical layer material with a first layer thickness,wherein one or more of the second regions comprise the optical layer material with a second layer thickness,wherein the first thickness is greater than the second thickness,wherein the optical layer comprises a UV radiation transmissive optical layer material.3. The light guide element according to claim 1 ,wherein the first index of refraction is equal to or smaller than 1.30 at 280 nm,wherein the optical layer is a porous optical layer having a porosity in the range of 5-70%.4. The light guide element according to claim 1 , wherein the optical layer material comprises a sol-gel material.5. The light guide element according to claim 1 ,wherein the ...

WAVEGUIDE LIGHTING FIXTURE PROVIDING AMBIENT LIGHT

A light fixture for waveguided ambient light is described herein. In one embodiment, the light fixture includes an LED light source for emitting light rays, a waveguide optically coupled to the LED light source to receive and guide the emitted light rays from a proximal end of the waveguide to a distal end of the waveguide, a first indirect lighting surface configured to receive a first portion of the emitted light rays and reflect the first portion at a first distribution to produce a first ambient light source, and a second indirect lighting surface configured to receive a second portion of the emitted light rays and reflect the second portion at a second distribution to produce a second ambient light source. 1. A light fixture , comprising:an LED light source for emitting light rays;a waveguide optically coupled to the LED light source to receive and guide the emitted light rays from a proximal end of the waveguide to a distal end of the waveguide;at least a first extrusion, the waveguide being positioned such that the proximal end is located within a cavity of the first extrusion, the waveguide partially protruding from the first extrusion;wherein the first extrusion includes a first reflective surface located overhead of the waveguide and a second reflective surface located underhead of the waveguide;the first reflective surface configured to receive a first portion of the emitted light rays and reflect the first portion at a first distribution to produce a first ambient light distribution; andthe second reflective surface configured to receive a second portion of the emitted light rays and reflect the second portion at a second distribution to produce a second ambient light distribution.2. The light fixture of claim 1 , further comprising:a microlens located on or in at least one surface of the distal end of the waveguide and configured to receive the emitted light rays and transmit the emitted light rays.3. The light fixture of claim 1 , further comprising:a ...

UNDER-SCREEN FINGERPRINT IDENTIFICATION SYSTEM

An under-screen fingerprint identification system includes an image sensing element, a display element, a translucent cover, and a Bragg polarization grating. The display element is disposed on the image sensing element. The translucent cover is disposed on the display element, and the display element is located between the translucent cover and the image sensing element. The translucent cover has a first surface and a second surface opposite to each other, and the first surface is farther away from the display element than the second surface. The Bragg polarization grating is disposed on the second surface of the translucent cover. 1. An under-screen fingerprint identification system comprising:an image sensing element;a display element disposed on the image sensing element;a translucent cover disposed on the display element, wherein the display element is located between the translucent cover and the image sensing element, the translucent cover has a first surface and a second surface opposite to each other, and the first surface is farther away from the display element than the second surface; anda Bragg polarization grating disposed on the second surface of the translucent cover.2. The under-screen fingerprint identification system according to claim 1 , further comprising:a light source adapted to emit a sensing beam, wherein the sensing beam is transmitted toward the first surface of the translucent cover after the sensing beam is deflected by the Bragg polarization grating.3. The under-screen fingerprint identification system according to claim 2 , wherein the Bragg polarization grating is disposed between the display element and the second surface of the translucent cover.4. The under-screen fingerprint identification system according to claim 2 , wherein the sensing beam is a linear polarization beam claim 2 , and a polarization direction of the linear polarization beam is parallel to a direction of a penetration axis of the Bragg polarization grating.5. ...

Display Backlight with Light Mixing Structures

A display may have a backlight unit with a row of light-emitting diodes that emit light into the edge of a light guide plate. The light guide plate may have opposing upper and lower surfaces. The upper surface of the light guide plate may have ridges and the lower surface of the light guide plate may have bumps. The edge of the light guide plate may have light mixing structures. The light mixing structures may include edge surfaces that refract light at a high angle. The high angle light may then be reflected by a reflective surface so that the light propagates down the light guide plate. Some light may pass through the light mixing structures and propagate down the light guide plate without being reflected by the reflective surface. This arrangement may reduce the mixing distance of the backlight unit. 1. A display backlight comprising:a row of light-emitting diodes; anda light guide plate having first and second opposing surfaces connected by an edge, wherein the edge receives light from the row of light-emitting diodes, wherein the edge has at least one light mixing structure and a reflective portion, and wherein a portion of the light that passes through the at least one light mixing structure is subsequently reflected by the reflective portion of the edge of the light guide plate.2. The display backlight defined in claim 1 , wherein the at least one light mixing structure comprises a protrusion with first and second surfaces that are at a first angle relative to a planar portion of the edge of the light guide plate.3. The display backlight defined in claim 2 , wherein the protrusion further comprises third and fourth surfaces that are interposed between the first and second surfaces and connect the first surface to the second surface claim 2 , wherein the third and fourth surfaces are at a second angle relative to the planar portion of the edge of the light guide plate.4. The display backlight defined in claim 3 , wherein the first angle is between 70° and 89°. ...

Light guide film, backlight module and display device having the same

A light guide film for use with a light source includes a light-transmissive substrate and a light-transmissive layer. The substrate includes a top surface, and a light-incident lateral surface adapted to be disposed adjacent to the light source. The layer is disposed on the top surface of the substrate and has a light-incident lateral surface aligned with the light-incident lateral surface of the substrate. The light-transmissive layer has an inclined surface that is opposite to the substrate and that extends away from the light-incident lateral surface of the layer and obliquely toward the top surface of the substrate. The layer has a refractive index different from that of the substrate.

LIGHT GUIDE FILM, BACKLIGHT MODULE AND DISPLAY DEVICE HAVING THE SAME

A light guide film which is adapted for use with a light source has a light transmissive substrate and a light-transmissive member unit. The substrate has a light-exiting top surface, a bottom surface that is opposite to the top surface and a lateral surface that interconnects the top and bottom surfaces and that is adapted to face toward the light source. The member unit includes a bottom member that is disposed on the bottom surface of the substrate, and a lateral member that is connected to the lateral surface of the substrate and that is adapted to be disposed between the light source and the lateral surface of the substrate. The substrate has a refractive index which is less than that of the member unit. 1. A light guide film adapted for use with a light source , comprising:a light-transmissive substrate having a light-exiting top surface, a bottom surface that is opposite to said top surface, and a lateral surface that interconnects said top and bottom surfaces and that is adapted to face toward the light source; anda light-transmissive member unit including a bottom member that is disposed on said bottom surface of said substrate, and a lateral member that is connected to said lateral surface of said substrate and that is adapted to be disposed between the light source and said lateral surface of said substrate;wherein said substrate has a refractive index which is less than that of said member unit.2. The light guide film according to claim 1 , wherein said lateral member is tapered toward said lateral surface of said substrate and has a top surface that extends obliquely to meet with said top surface of said substrate.3. The light guide film according to claim 1 , wherein said lateral member has a top surface that meets with said top surface of said substrate in a co-planar manner.4. The light guide film according to claim 2 , wherein said lateral surface of said substrate is perpendicular to said bottom surface of said substrate.5. The light guide film ...

Electronic paper display

The disclosure provides an electronic paper display. The electronic paper display includes an electronic paper panel. A light guide plate is disposed on the electronic paper panel. The light guide plate has a first surface and a second surface opposite to the first surface. A conductive pattern structural layer is disposed on the light guide plate. A light source is disposed on a side of the light guide plate. The first surface of the light guide plate is a patterned surface. A light generated by the light source is reflected or scattered to the electronic paper panel by the patterned surface.

HEAD MOUNTED DISPLAY

A head mounted display displays an image in a user's view field and includes a projection unit projecting image light from an image display unit; and a first and second light guide plates that duplicate the image light from the projection unit. The first and second light guide plates each include a set of parallel main surfaces confining the image light by internal reflection. The first light guide plate includes an incident surface reflecting the image light inward, and two or more emission reflective surfaces emitting the image light to the second light guide plate. The incident and emission reflective surfaces are parallel to each other at an angle different from the main surface, and the second light guide plate includes an input unit coupling the image light from the first light guide plate inward, and an output unit emitting the image light to the user's pupil.

Display with reflective spatial light modulator and a film-based lightguide frontlight folded behind the modulator to receive light from a light source positioned on an electrical display connector

A display includes a reflective spatial light modulator and a frontlight formed from a film having a light mixing region positioned along the film between a light emitting region and an array of coupling lightguides. In one embodiment, the light mixing region of the film and an electrical display connector are folded behind an active display area of the reflective spatial light modulator such that a light source positioned on the electrical display connector emits light into the array of coupling lightguides. In one embodiment, the light source and the reflective spatial light modulator are electrically driven by electrical connections on the flexible electrical display connector. 1. A display comprisinga reflective spatial light modulator comprising a front viewing side, a back side opposite the front viewing side, and an active display area of modulating pixels enclosed by a plurality of edges on the front viewing side;a frontlight comprising:a lightguide formed from a film with a thickness less than 0.5 millimeters, the lightguide having a lightguide region and an array of coupling lightguides continuous with the lightguide region, and the array of coupling lightguides are folded and stacked such that ends of the coupling lightguides define a light input surface;a light emitting region of the film defined within the lightguide region of the film and disposed on the front viewing side of the reflective spatial light modulator; anda light mixing region of the film between the light emitting region and the array of coupling lightguides, the light mixing region folded around a first edge of the plurality of edges such that the light input surface is positioned behind the active display area at the back side of the reflective spatial light modulator;a flexible electrical display connector extending from the reflective spatial light modulator and folded behind the reflective spatial light modulator such that it extends behind the active display area at the back side of ...

LIGHT GUIDE PLATE AND AREA LIGHT SOURCE DEVICE

A light guide plate has an end surface configured to have light incident thereon, a light introduction part that confines light incident through the end surface, and a light guide plate body disposed to be continuously joined to the light introduction part. The light guide plate body has a thickness smaller than a maximum thickness of the light introduction part. The light guide plate body outputs the incident light to an outside from a lighting region through a light exit part. The light introduction part includes an inclined surface in at least one of a light-exit-side surface and an opposite surface of the light-exit-side surface. The directivity change pattern changes directivity of the light passing to the lighting region from the light introduction part. 1. A light guide plate comprising:an end surface configured to have light incident thereon;a light introduction part that confines light incident through the end surface; anda light guide plate body disposed to be continuously joined to the light introduction part,wherein the light guide plate body has a thickness smaller than a maximum thickness of the light introduction part,wherein the light guide plate body outputs the incident light to an outside from a lighting region through a light exit part,wherein the light introduction part includes an inclined surface in at least one of a light-exit-side surface and an opposite surface of the light-exit-side surface,wherein the inclined surface is inclined toward an end of the light guide plate body from a surface of a portion thicker than the light guide plate body,wherein the light guide plate body includes a directivity change pattern in a region located between the light introduction part and the lighting region in at least one of the light-exit-side surface and the opposite surface of the light-exit-side surface,wherein the directivity change pattern changes directivity of the light passing to the lighting region from the light introduction part, andwherein at ...

Systems And Methods For Lighting Spring Loaded Mechanical Key Switches

Systems and methods are disclosed that may be implemented to provide keycap lighting to a spring loaded mechanical key switch assembly using a light conductive structure, such as a light pipe, and without requiring a chassis housing of the mechanical key switch assembly to include a dedicated power-consuming light source mounted to or otherwise positioned at the location of the individual key switch assembly chassis housing. Additionally, the disclosed systems and methods may be implemented to use one or more common power-consuming light source/s to simultaneously provide key cap lighting to multiple such spring loaded mechanical key switch assemblies, for example, by feeding light to each key cap though a common light spreader and through an individual non-power consuming light pipe provided for each key switch assembly.

Optical Systems including Light-Guide Optical Elements with Two-Dimensional Expansion

An optical system provides two-stage expansion of an input optical aperture for a display based on a light-guide optical element. A first expansion is achieved using two distinct sets of mutually-parallel partially-reflecting surfaces, each set handing a different part of an overall field-of-view presented to the eye. In some cases, a single image projector provides image illumination to two sets of facets that are integrated into the LOE. In other cases, two separate projectors deliver image illumination corresponding to two different parts of the field-of-view to their respective sets of facets. 2. The optical system of claim 1 , wherein said first set of partially-reflecting surfaces deflects a first part of a field of view of the image towards said second region and said second set of partially-reflecting surfaces deflects a second part of the field of view of the image towards said second region claim 1 , said first and second parts of the field of view combining to provide a continuous combined field of view larger than each of said first and second parts.3. The optical system of claim 1 , wherein each of said first and second sets of partially-reflecting surfaces includes a deflection surface configured to reflect a majority of the image illumination incident on said deflection surface claim 1 , said deflection surface being deployed to be the first partially-reflecting surface of each of said first and second sets of partially-reflecting surfaces reached by the image illumination injected into the at least one coupling-in region.4. The optical system of claim 3 , wherein said deflection surface of said first set of partially-reflecting surfaces and said deflection surface of said second set of partially-reflecting surfaces meet at a line.5. The optical system of claim 3 , wherein each of said first and second sets of partially-reflecting surfaces includes a filler surface adjacent to said deflection surface claim 3 , said filler surface having a length ...

Film-based light fixture with light reflecting layer and fastener

In one aspect, a light emitting device comprises a film-based lightguide including folded and stacked strips extending from a lightguide region of the film. In one aspect, the film comprises light extracting features defining light emitting regions that extract light from at least one light source positioned to emit light into the stacked end of strips. The light emitting device may include a light reflecting layer physically coupled to the light emitting device, laminated to a layer of the film, or printed onto a layer of the film proximate the light emitting region of the film. The light emitting device may also include a fastener configured to attach the light emitting device to a wall or ceiling. 1. A light emitting device for illuminating an environment exterior to the light emitting device , the light emitting device comprising:a lightguide formed from a film, the film comprising a first cladding layer optically coupled to a core layer on a first surface of the core layer, a second cladding layer optically coupled to the core layer on a second surface of the core layer opposite the first surface, the core layer having a thickness less than 200 micrometers, the first cladding layer has a first cladding refractive index, the second cladding layer has a second cladding refractive index, and the core layer has a core refractive index, the core refractive index is larger than the first cladding refractive index and second cladding refractive index by more than 0.01.a plurality of strips of the film extended from a lightguide region of the film along one side of the film, the strips are folded and stacked such that they are parallel to each other with their ends forming a light input surface;light extraction features within the lightguide region of the film, the light extraction features defining a light emitting region, the light extraction features having an average lateral dimension in the light emitting regions in a direction parallel to an optical axis of the ...

LIGHT GUIDE PLATE AND DISPLAY DEVICE HAVING THE SAME

A light guide plate includes a light conversion portion which transmits a transmission incident light having a first wavelength, and converts a conversion incident light having the first wavelength to a converted light having a second wavelength; and a light guide portion which guides the transmission incident light and the converted light in a first direction. The light conversion portion includes a light incident surface which receives the transmission incident light and the conversion incident light, an inclined side surface inclined with respect to the light incident surface to form an inclined angle with the light incident surface, quantum dots which convert light having the first wavelength to light having the second wavelength and are distributed in a quantum area on the light incident surface and the inclined side surface, and a reflector adjacent to the inclined side surface in a second direction opposite to the first direction. 1. A light guide plate comprising: a transmission incident light having a first wavelength is transmitted, and', 'a conversion incident light having the first wavelength is converted to a converted light having a second wavelength different from the first wavelength; and, 'a light conversion portion at which'}a light guide portion which guides the transmitted transmission incident light and the converted light in a first direction away from the light conversion portion, a light incident surface which faces the light source and receives the transmission incident light and the conversion incident light;', 'an inclined side surface inclined with respect to the light incident surface to form an inclined angle with the light incident surface;', 'quantum dots which convert light having the first wavelength to light having the second wavelength, the quantum dots distributed in a quantum area disposed on the light incident surface and on the inclined side surface; and', 'a reflector disposed adjacent to the inclined side surface in a second ...

ILLUMINATION DEVICE AND DISPLAY DEVICE

Provided is an illumination device for obtaining planar light having satisfactory uniformity and suppressed brightness irregularities. A backlight unit (illumination device) () comprises a light source and a light-guiding element () for guiding light from the light source. The light-guiding element () includes prisms () formed in an end area () on the light source side, and prisms () formed in an area (a light-emitting area ()) on the side opposite the light source relative to the end area (). The prisms () vary the propagation angle of light spreading in a direction intersecting the direction of light entry, more so than the prisms (). 1. An illumination device comprising: 'a light-guiding element for guiding light from the light source;', 'a light source; and'} 'the first reflective part causing the propagation angle of light spreading in a direction intersecting the direction of light entry to vary to a greater extent than the second reflective part.', 'the light-guiding element including a first reflective part formed in an end area on the light source side, and a second reflective part formed in an area on the side opposite the light source relative to the end area; and'}2. The illumination device according to claim 1 , the first reflective part reflecting incoming light in a direction toward the optical axis of light from the light source.3. The illumination device according to claim 1 , the first reflective part and the second reflective part being of different shape.4. The illumination device according to claim 1 , the light-guiding element having a light entry surface which is a side surface where light from the light source enters;the first reflective part having a first inclined surface extending in a substantially orthogonal direction from the light entry surface as seen in plan view; andthe second reflective part having a second inclined surface extending in a substantially orthogonal direction relative to the light entry surface as seen in plan view.5. ...

Image display apparatus and head mounted display

An image display apparatus includes: an image forming device; an optical system converting light emitted from the image forming device into parallel light; and an optical device to which the light beams converted into the parallel light by the optical system enter, in which the light beams are guided, and from which the light beams are emitted, wherein a central light beam emitted from the center of the image forming device, passing through the nodal point of the optical system and entering the optical device at an optical device center point intersects an XY plane defined by an X axis that passes through the optical device center point, and is parallel to the axis direction of the optical device and a Y axis that passes through the optical device center point, and coincides with the normal axis of the optical device at angles other than 0 degree.

Film-based lightguide with bend positioning strips behind an extraction region

A film-based lightguide comprises a major sheet area comprising a light extracting region and a minor sheet area positioned between the major sheet area and an array of strips extended from the minor sheet area. Each strip of the array of strips is bent and stacked such that stacked ends of the array of strips define an input surface. The lightguide further comprises a bend in the minor sheet area that positions the array of strips behind the major sheet area in a thickness direction of the film in the major sheet area. In one embodiment, the bend in the minor sheet area bends the film by an angle of 180 degrees. In another embodiment, the bend in the minor sheet area positions the light input surface behind the major sheet area in the thickness direction of the film in the major sheet area. 1. A device comprising:a film comprising a major sheet area of the film bounded by edges of the film, the major sheet area comprising a light extracting region positioned to receive and extract light propagating by total internal reflection within the film out of the major sheet area;a minor sheet area of the film between the major sheet area and an array of strips, the array of strips extended from the minor sheet area of the film, and each strip of the array of strips is bent and stacked such that stacked ends of the array of strips define a light input surface; anda bend in the minor sheet area that positions the array of strips behind the major sheet area in a thickness direction of the film in the major sheet area.2. The device of wherein the bend in the minor sheet area bends the film by an angle of 180 degrees.3. The device of wherein the bend in the minor sheet area positions the light input surface behind the major sheet area in the thickness direction of the film in the major sheet area.4. The device of further comprising at least one light source positioned to emit light into the light input surface and positioned behind the major sheet area in the thickness direction ...

REAR LAMP APPARATUS OF VEHICLE

A rear lamp apparatus of a vehicle is provided. The apparatus includes a light source that emits light having a first wavelength band, a light filter disposed with a first side facing an exterior and a second side facing an interior, that reflects light having the first wavelength band, and transmits light having a second wavelength band that is different from the first wavelength band. A light diffraction element is disposed to receive light emitted from the light source and changes a transmission path of incident light to direct. The light emitted is transmitted to the first side of the light filter by the light diffraction element and is reflected to be directed toward the exterior of the vehicle to prevent the transmission to the interior of the vehicle. Accordingly, a rear lamp is turned on at a side of rear glass and exterior and interior visual fields are improved. 1. A rear lamp apparatus of a vehicle , comprising:one or more light source configured to emit light having a first wavelength band;a light filter disposed with a first side facing an exterior of the vehicle and a second side facing an interior of the vehicle, that is configured to reflect light having the first wavelength band, and transmit light having a second wavelength band that is different from the first wavelength band; anda light diffraction element disposed to receive light emitted from the light source and adjust a transmission path of incident light to direct the light to be incident to the first side of the light filter,wherein light emitted from the light source is transmitted to the first side of the light filter by the light diffraction element and is reflected from the light filter to be directed toward the exterior of the vehicle to prevent the transmission to the interior of the vehicle.2. The apparatus of claim 1 , wherein the light diffraction element is a diffractive lens claim 1 , is configured to diffract a transmission direction of the incident light to direct light toward ...

Slim waveguide coupling apparatus and method

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure.

LIGHTING SYSTEM USING A LIGHT GUIDE AND A LIGHTING METHOD

A lighting system uses an edge lit waveguide. The bottom has a set of elongate light extraction features for out-coupling light from the light guide towards a reflector which reflects light back into the light guide. The top face of the light guide functions as the output for the lighting system. In some examples it has a set of elongate beam shaping features extending substantially orthogonally to the set of light extraction features for beam shaping of light exiting the top face. 2. A lighting system as claimed in claim 1 , wherein the light extraction features comprise pillars having a length l claim 1 , wherein the length l is at least hundred times larger than the width w and/or the height h.336. A lighting system as claimed in claim 1 , further comprising an air gap () between the bottom face of the light guide and the reflector which has a height of more than 1.5 times the average pitch between the light extraction features.4. A lighting system as claimed in claim 1 , wherein the reflector is a white diffuse reflector or a specular reflector with a Gaussian diffuser over the top.5. A lighting system as claimed in claim 1 , wherein the light extraction features extend between −5 degrees and +5 degrees to an edge into which light is coupled into the light guide.6. A lighting system as claimed in claim 1 , wherein the elongate light extraction features comprise pillars extending alongside the length of the lighting arrangement claim 1 , each with a rectangular or tapered rectangular cross section.7. (canceled)9. A lighting system as claimed in claim 6 , wherein each lighting extraction feature has a tapered cross section with a taper angle of less than 10 degrees claim 6 , more preferably less than 5 degrees.10. A lighting system as claimed in claim 1 , wherein the light extraction features comprise pillars extending alongside the length of the lighting arrangement claim 1 , each with a semi-circular cross section.11. A lighting system as claimed in claim 1 , ...

REFLECTIVE DISPLAY INCLUDING A FRONTLIGHT WITH MULTIPLE FOLDED LIGHTGUIDES

A display comprises a reflective spatial light modulator having an active area, a plurality of lightguides stacked above the active area with one or more cladding or adhesive layers therebetween, and a light source positioned behind the reflective spatial light modulator to emit light that propagates into the plurality of lightguides such that it totally internally reflects within each lightguide of the plurality of lightguides, is extracted from each lightguide, and illuminates the active area, wherein each lightguide is folded at a first fold. In one embodiment a light mixing region of the plurality of lightguides comprises the first fold. In another embodiment, each lightguide comprises an array of coupling lightguides folded at the first fold such that they are stacked with their bounding edges positioned to receive the light from the light source. 1. A display comprising:a light emitting surface;a reflective spatial light modulator having an active area; a first core layer having opposing surfaces with a first thickness therebetween; and', 'a first light emitting region comprising a first plurality of light extraction features arranged in a pattern that varies spatially in the first light emitting region;, 'a first lightguide comprising a second core layer having opposing surfaces with a second thickness therebetween; and', 'a second light emitting region comprising a second plurality of light extraction features arranged in a pattern that varies spatially in the second light emitting region; and, 'a second lightguide comprisinga light source positioned to emit first light that propagates into the first core layer, totally internally reflects within the first core layer, is extracted from the first core layer by the first plurality of light extraction features, exits the first core layer in the first light emitting region, is directed to pass through the second light emitting region and illuminates the active area; the light source positioned to emit second ...

Display Backlight with Light Mixing Structures

A display may have a backlight unit with a row of light-emitting diodes that emit light into the edge of a light guide layer. The light guide layer may have opposing upper and lower surfaces. The upper surface of the light guide layer may have ridges and the lower surface of the light guide layer may have bumps. The edge of the light guide layer may have light mixing structures. The light mixing structures may include an alternating pattern of protrusions with different shapes. For example, triangular protrusions of a first size may be patterned with triangular protrusions of a second size. The light mixing structures may reduce the mixing distance of the backlight unit.

BACKLIGHT MODULE AND DISPLAY DEVICE

A backlight module and a display device are provided. The backlight module includes a light source, a light guide plate and a reflection sheet. A side of the light guide plate includes a light-incident surface perpendicular to a bottom surface, a first inclined plane, and a second inclined plane. An intersecting line between a plane in which the first inclined plane lies and a plane in which the second inclined plane lies is located outside of the light guide plate, and the intersecting line is parallel with the bottom surface. The first and second inclined planes are configured such that a total reflection occurs on at least a part of the light at the first and second inclined planes, and thus an incidence angle of light emitted towards the bottom surface is greater than or equal to a critical angle at the bottom surface. 1. A backlight module , comprising: a light source , a light guide plate and a reflection sheet; wherein the light source and the reflection sheet are located outside of the light guide plate , and the light guide plate comprises:a bottom surface disposed opposite to the reflection sheet;a light-emergent surface disposed opposite to the bottom surface and parallel with the bottom surface;a light-incident surface located at a side of the light guide plate, perpendicular to the bottom surface and disposed opposite to the light source;a first inclined plane disposed between the light-incident surface and the light-emergent surface;a second inclined plane disposed between the light-incident surface and the bottom surface.2. The backlight module of claim 1 , wherein a light-reflecting layer is provided at an outer side of the first inclined plane and the second inclined plane.3. The backlight module of claim 2 , wherein the light-reflecting layer is a silver-plated layer or a silver-coated reflective layer.4. The backlight module of claim 1 , wherein a width of a luminous surface of the light source is less than or equal to a width of the light- ...

NVIS COMPATIBLE BACKLIGHT DEVICE AND ELECTRONIC DISPLAY USING THE SAME

A backlight assembly includes a substantially planar light guide defining an upper surface, a lower surface, and a side surface. A first plurality of LEDs is positioned below the lower surface of the light guide and oriented to direct the light emitted therefrom into the lower surface. A NVIS filter is placed adjacent to the side surface and a second plurality of LEDs is positioned near the side surface. A separating element extends between the first and second plurality of LEDs. A directing element extends between the second plurality of LEDs and the NVIS filter to direct the emitted light from the second plurality of LEDs through the NVIS filter and into the light guide. 1. A backlight assembly comprising:a substantially planar light guide defining an upper surface, a lower surface, and a side surface;a first plurality of LEDs positioned below the lower surface of the light guide and oriented to direct light emitted from the first plurality of LEDs into the lower surface;a NVIS filter placed adjacent to the side surface;a second plurality of LEDs positioned near the side surface;a separating element extending between the first plurality of LEDs and the second plurality of LEDs; anda directing element extending between the second plurality of LEDs and the NVIS filter to direct light emitted from the second plurality of LEDs through the NVIS filter and into the light guide.2. The backlight assembly of wherein:said directing element comprises a curved, reflective surface.3. The backlight assembly of further comprising:a second NVIS filter placed adjacent to a second side surface of the substantially planar light guide, wherein said second side surface is positioned opposite the side surface;a third plurality of LEDs positioned near the second side surface;a second separating element extending between the third plurality of LEDs and the first plurality of LEDs; anda second directing element extending between the third plurality of LEDs and the second NVIS filter to ...

Laser-Pumped Phosphor Backlight and Methods

This disclosure provides systems, methods and apparatus for a laser-pumped phosphor backlight for display devices. In one aspect, a display includes a laser backlight configured to emit light, a plurality of phosphors that emit light at a respective wavelength when stimulated by light emitted by the laser backlight, and a waveguide including a diffraction grating positioned between the laser backlight and the plurality of phosphors. In some implementations, the diffraction grating may be configured to direct the light emitted by the laser backlight at a different intensity for each of the plurality of phosphors. For example, the diffraction grating may direct the light at different intensities for each of the plurality of phosphors by generating a diffraction pattern such that the light emitted by the laser backlight is distributed at different relative intensities for each of the plurality of phosphors. 1. A display comprising:a laser backlight configured to emit light;a plurality of phosphors, wherein each phosphor emits light at a respective wavelength when stimulated by light emitted by the laser backlight; anda waveguide including a diffraction grating positioned between the laser backlight and the plurality of phosphors, wherein the diffraction grating is configured to direct the light emitted by the laser backlight towards the plurality of phosphors.2. The display of claim 1 , wherein the diffraction grating is configured to direct the light emitted by the laser backlight at a different intensity for each of the plurality of phosphors.3. The display of claim 2 , wherein the diffraction grating is configured to direct the light emitted by the laser backlight at the different intensity for each of the plurality of phosphors by generating a diffraction pattern such that the light emitted by the laser backlight is distributed at different relative intensities for each of the plurality of phosphors4. The display of claim 2 , wherein the plurality of phosphors ...

MULTIBEAM DIFFRACTION GRATING-BASED COLOR BACKLIGHTING

Multibeam diffraction grating-based color backlighting includes a plate light guide, a multibeam diffraction grating at a surface of the plate light guide, and light sources laterally displaced from one another in a direction corresponding to a propagation axis of the plate light guide. The light sources produce light of different colors. The plate light guide is to guide light from the light sources. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling as a plurality of light beams of different colors in a plurality of different principal angular directions. 1. A multibeam diffraction grating-based color backlight comprising:a plurality of light sources of different colors;a plate light guide to guide light of the different colors produced by the light sources, the light sources being laterally displaced from one another in a direction corresponding to a propagation axis of the guided light within the plate light guide; anda multibeam diffraction grating at a surface of the plate light guide to diffractively couple out a portion of the guided light from the plate light guide as a plurality of light beams having the different colors, a light beam of the light beam plurality having a principal angular direction different from principal angular directions of other light beams of the light beam plurality,wherein a principal angular direction of a light beam of a color corresponding to a respective light source is a function of the lateral displacement of the respective light source.2. The multibeam diffraction grating-based color backlight of claim 1 , wherein the multibeam diffraction grating comprises a chirped diffraction grating.3. The multibeam diffraction grating-based color backlight of claim 1 , wherein the multibeam diffraction grating comprises one of curved grooves and curved ridges that are spaced apart from one another.4. The multibeam diffraction grating-based color backlight of claim 1 , further ...

OPTICAL STRUCTURE FOR LIGHT-EMITTING DIODE DEVICE AND LIGHT-EMITTING DIODE DEVICE FOR LIGHTING APPLICATION INCLUDING THE SAME

An optical structure for a light-emitting diode (LED) device, and an LED device for a lighting application including the same. The optical structure includes a light guide plate and a prism sheet, the light guide plate having first and second surfaces facing away from each other, the prism sheet is disposed on a peripheral portion of the first surface, and includes a plurality of prisms continuously arranged in one direction to form a pattern. At least some prisms have an asymmetrical structure in which light-refracting surfaces have different inclinations.

SLIM WAVEGUIDE COUPLING APPARATUS AND METHOD

In various embodiments, an illumination structure includes a discrete light source disposed proximate a bottom surface of a waveguide and below a depression in a top surface thereof. A top mirror may be disposed above the discrete light source to convert modes of light emitted from the discrete light source into trapped modes, thereby increasing the coupling efficiency of the illumination structure. 112.-. (canceled)13. An illumination structure comprising:a waveguide having (i) an out-coupling region for emitting light from the waveguide, and (ii) a cavity extending through a thickness of the waveguide;one or more discrete light sources positioned to emit light into the cavity; anda mirror positioned above and/or within the cavity above the one or more discrete light sources.14. The illumination structure of claim 13 , wherein the mirror comprises a conical mirror disposed at least partially within the cavity.15. The illumination structure of claim 13 , wherein the mirror comprises a flat mirror.16. The illumination structure of claim 13 , wherein a cross-sectional area of a first portion of the cavity proximate the mirror is larger than a cross-sectional area of a second portion of the cavity proximate the one or more discrete light sources.17. The illumination structure of claim 13 , wherein at least a portion of the cavity not occupied by the one or more discrete light sources and the mirror is filled with an index-matching material.18. The illumination structure of claim 17 , wherein an index of refraction of the index-matching material is substantially equal to an index of refraction of the waveguide.19. The illumination structure of claim 17 , wherein the index-matching material is adhesive.20. The illumination structure of claim 17 , wherein an index of refraction of the index-matching material is less than an index of refraction of the waveguide.21. The illumination structure of claim 17 , wherein the index-matching material comprises silicone.22. The ...

LIGHT EMITTING STRUCTURE AROUND A KEYBOARD BACKLIGHT MODULE

A light emitting structure around a keyboard backlight module is disclosed to include a light guiding plate comprising a light source, a flat-shape reflecting layer disposed on one side of the light guiding plate, and a transparent film of a light blocking layer disposed on other side of the light guiding plate and comprising a light absorbing layer. A deflection portion is bending inwardly toward the reflecting layer and then extending outwardly to form a flat-shape positioning portion adhered to the reflection layer by an adhesive layer. The light source can project light toward the light guiding plate and pass part of the light from the light guiding plate to the deflection portion due to diaphaneity of the material of the transparent film. A light emitting area can be formed around the backlight module, lightening the connection port of the electronic device or other area needed to be lightened. 1. A light emitting structure around a keyboard backlight module , comprising a backlight module which is provided with a light guiding plate , a predetermined light source disposed at least one side of said light guiding plate to project light toward said light guiding plate to enable said light guiding plate lighting , and a reflecting layer having flat shape and disposed at a side surface of said light guiding plate , and a light blocking layer having at least one transparent film and disposed at other side surface of said light guiding plate opposite to said reflecting layer , a light absorbing layer formed on outer side surface of said transparent film , and a deflection portion formed by bending said transparent film at peripheral of said light absorbing layer and adjacent to said light guiding plate toward said reflecting layer , and said deflection portion bent inwardly to enable said light emitting from lateral portion of said light guiding plate to pass through to form a light emitting area at peripheral of said backlight module , a positioning portion having ...

Light guide plate and surface light source device

A light guide plate has a light introduction part having an end face configured to have light incident thereon, and a light guide plate body provided continuously to the light introduction part and comprising a thickness smaller than maximum thickness of the light introduction part. The light guide plate body has a light emitting surface configured to emit light incident from the end face. A directivity conversion pattern is provided on at least one of a face on a light exit side and a face opposite to the face. The directivity conversion pattern converts directivity spread in a thickness direction of the light introduction part to a directivity characteristic which is inclined in a direction parallel to a face direction of the light introduction part. A light reflection wall is provided on the end face.

BACKLIGHT MODULE

A backlight module includes a light guiding board and a number of LED light sources located a lateral side of the light guiding board. The light guiding board includes a top surface and a bottom surface opposite to the top surface. A slot is defined at the lateral side of the light guiding board adjacent to the LED light sources. The slot is depressed away from the LED light sources. The slot extends along a direction where the LED light sources are arranged along. Confronting faces of a plurality of protrusions defining the slot refract the light when the light is emitted from the LED light sources and enters into the light guiding board to change a transmitting direction of the light. The bottom surface of the light guiding board is a light reflecting surface. 1. A backlight module , comprising:a light guiding board, the light guiding board comprising a top surface and a bottom surface opposite to the top surface, the top surface being a light output surface of the backlight module; anda plurality of LED light sources located a lateral side of the light guiding board;wherein a plurality of protrusions is formed on the lateral side of the light guiding board, a slot is defined in the plurality of protrusions at the lateral side of the light guiding board adjacent to the LED light sources, the slot is depressed away from the LED light sources, the slot extends along a direction where the LED light sources are arranged along, the slot is located between confronting faces of each two adjacent top and bottom protrusions, the confronting faces refract the light when the light enters into the light guiding board to change a transmitting direction of the light toward at least one of the top and bottom surfaces, and the bottom surface of the light guiding board is a light reflecting surface.2. The backlight module of claim 1 , wherein a number of protrusion strips are formed in the bottom surface claim 1 , and an extending direction of each of the protrusion strips extends ...

Light guiding plates, backlight modules, and display devices

A light guiding plate includes a light incident surface, a light emitting surface, a reflective surface, and a first reflective surface. The light emitting surface is opposite to the reflective surface. A first reflective surface connects the light emitting surface and the light incident surface. The light incident surface connects the first reflective surface and the reflective surface. The light incident surface is configured for receiving light beams from a light source. The first reflective surface and an extended surface of the light emitting surface form a first angle, and the first angle is an acute angle. The present disclosure also relates to a backlight module and a display device. The light guiding plate is capable of enhancing the display performance of the display device.

Wireless Control Device Assembly

A control device, such as a gateway device for a wireless load control system, has a light bar extending around a periphery of an enclosure to provide feedback to a user of the load control system, as well as to provide a pleasing aesthetic effect on the gateway device. The control device may include at least one light-emitting diode mounted to a printed circuit board inside the enclosure, a control circuit mounted to the printed circuit board and operatively coupled to the light-emitting diode for controllably illuminating the light-emitting diode, and a multi-functional mounting structure for mounting the printed circuit board inside the enclosure. The mounting structure may have at least one light-pipe structure for conducting light from the at least one light-emitting diode to the light bar. The mounting structure may have an antenna-mounting structure to which an antenna of the control device may be mounted. 1. (canceled)2. A light diffusion system , comprising:a light-pipe structure having a length, an upper surface and a lower surface forming an angle with the upper surface such that the light-pipe structure tapers from a relatively thicker central portion to relatively thinner terminal portions at each end of the length; 'wherein the first portion of the light diffuser disposed proximate the upper surface of the light-pipe structure such that, in operation, at least a portion of the light conveyed by the light pipe structure exits radially outward from the second portion of the light diffuser.', 'a light diffuser having a first portion and a second portion optically coupled to and disposed orthogonal to the first portion;'}3. The system of wherein the light diffuser comprises a light diffuser in which the first portion and the second portion optically couple to provide a light diffuser having a “T”-shaped transverse cross-section.4. The light diffusion system of claim 2 , the light-pipe structure further comprising:a first recess formed in the lower surface ...

Display device

A display device according to this technique includes a slanting surface provided at a lower section of a housing accommodating a display panel and slanted in a depth direction; a receiving light guide member located at the slanting surface and having an incident surface exposed from a front surface of the housing, an emitting surface for emitting light to a light receiving sensor, and a reflective surface provided between the incident surface and the emitting surface; and an emitting light guide member, located at the slanting surface and having a front emitting surface slanted so as to be substantially flush with the slanting surface, for guiding light from a light emitting diode to the front surface of the housing.

BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY

Disclosed is a backlight module having light sources and a light guide plate, and the light guide plate has an incident side, and the lights emitted by the light sources pass through the incident side and enter into the light guide plate, and the a light direction changing layer is positioned at the incident side, and the light direction changing layer is employed for changing progress directions of the lights entering the incident side to shorten a distance perpendicular to the incident side from an intersection point of the lights emitted by adjacent light sources to the light sources. The present invention also discloses a liquid crystal display. 1. A backlight module , comprising light sources and a light guide plate , the light guide plate having an incident side , and the lights emitted by the light sources passing through the incident side and entering into the light guide plate , characterized in that:a distance between the light source and a light direction changing layer is a light coulping distance, and the light coulping distance is a predetermined distance for all the lights emitted by the light sources to enter into the light direction changing layer;a light direction changing layer is positioned at the incident side and is laminated to the incident side of the light guide plate, the light direction changing layer is coated on the incident side of the light guide plate and the light direction changing layer is employed for changing progress directions of the lights entering the incident side to shorten a distance perpendicular to the incident side from an intersection point of the lights emitted by adjacent light sources to the light sources;wherein a distance between the light sources and the light direction changing layer is a light coupling distance, all the lights emitted by the light sources can enter the light direction changing layer.2. The backlight module according to claim 1 , characterized in that the light guide plate has a first refractive ...

Display Device and Method of Manufacturing the Same

A display device according to an embodiment of the invention includes a display member configured to display images, a light source member configured to generate light, and a light guiding member disposed between the light source member and the display member. The light guiding member is configured to guide the light to the display member. The display member, the light source member, and the light guiding member are integrated as a single unit. The light source member generates blue light. The light guiding member includes a light guide layer and a fluorescent layer disposed on a top surface or a bottom surface of the light guide layer. The fluorescent layer is configured to convert the blue light into white light. 1. A display device comprising:a display member configured to display images;a light source member configured to generate light; anda light guiding member disposed between the light source member and the display member and configured to guide the light to the display member,wherein the light source member generates blue light, and a light guide layer; and', 'a fluorescent layer disposed on a top surface or a bottom surface of the light guide layer, the fluorescent layer configured to convert the blue light into white light., 'wherein the light guiding member comprises2. The display device of claim 1 , wherein the light guide layer has a plurality of depressions disposed on the bottom surface.3. The display device of claim 2 , wherein the light guiding member further comprises a diffusion layer disposed on the light guide layer.4. The display device of claim 3 , wherein the fluorescent layer is coated on a surface of the depressions.5. The display device of claim 3 , wherein the fluorescent layer is disposed on a top surface of the diffusion layer.6. The display device of claim 5 , wherein the fluorescent layer comprises a quantum dot.7. The display device of claim 2 , wherein the light source member comprises a light source chip disposed on the ...

Wide dispersion source multiple path light direction system

A lighting system uses optics to redirect stray light from unlensed LEDs toward a desired region while avoiding hot spots. The optics involve essentially planar surfaces with both reflective and light transmissive characteristics. The lighting system may be used in display cases.

Stack Lighter Luminaire

A luminaire module including a plurality of light-emitting elements (LEEs) arranged to emit light in a forward direction; a light guide comprising a pair of opposing side surfaces extending from a receiving end of the light guide to an opposing end of the light guide, the light guide configured to guide light received at the receiving end from the LEEs in the forward direction to the opposing end, wherein the light guide is elongated along a transverse direction orthogonal to the forward direction; and an optical extractor elongated along the transverse direction and located at the opposing end of the light guide to receive the guided light, the optical extractor comprising a redirecting surface and an output surface, wherein the received light undergoes two reflections off the redirecting surface prior to being output through the output surface in an ambient environment as output light in a backward angular range. 1. A luminaire module comprising:a plurality of light-emitting elements (LEEs) arranged to emit light in a forward direction;a light guide comprising a pair of opposing side surfaces extending from a receiving end of the light guide to an opposing end of the light guide, the light guide configured to guide light received at the receiving end from the LEEs in the forward direction to the opposing end, wherein the light guide is elongated along a transverse direction orthogonal to the forward direction; andan optical extractor elongated along the transverse direction and located at the opposing end of the light guide to receive the guided light, the optical extractor comprising a redirecting surface and an output surface, wherein the received light undergoes two reflections off the redirecting surface prior to being output through the output surface in an ambient environment as output light in a backward angular range.2. The luminaire module of claim 1 , whereinthe output surface is convex, andthe redirecting surface of the optical extractor comprises a ...

Light guide plate and surface illumination device

A light guide plate has a light input end surface from which light is introduced, a light output surface that outputs light spread in a planar manner externally, a flat main light guiding body including the light output surface, a light conducting portion that has a maximum thickness greater than the thickness of the main light guiding body and includes the light input end surface, a first slanted surface provided on the light conducting portion on at least one of a surface near the light output surface and a surface opposite thereto, the first slanted surface inclined from a first location that is thicker than the main light guiding body toward the outer surface of the main light guiding body, and a plurality of first pattern elements provided on the light conducting portion on at least one of a surface near the light output surface and a surface opposite thereto.

LIGHT-EMITTING DEVICE

A light-emitting device includes a light-emitting element, first and second light-transmissive members disposed on the light-emitting element, a light-guiding member, and a light-reflective member. A perimeter of a lower surface of the first light-transmissive member is disposed inwardly of a perimeter of an upper surface of the light-emitting element in a plan view. The light-guiding member covers the upper surface of the light-emitting element and the lower surface and lateral surfaces of the first light-transmissive member. The light-guiding member does not cover an upper surface of the second light-transmissive member and at least a portion of a lateral surface of the second light-transmissive member continuous. The light-reflective member covers lateral surfaces of the light-guiding member and at least the portion of the lateral surface of the second light-transmissive member exposed from the light-guiding member. The light-reflective member does not cover the upper surface of the second light-transmissive member. 1. A light-emitting device comprising:a light-emitting element having an upper surface serving as a light-extracting surface of the light emitting element;a first light-transmissive member containing a phosphor and disposed on the upper surface of the light-emitting element, the first light-transmissive member having an upper surface and a lower surface, at least a portion of a perimeter of the lower surface of the first light-transmissive member being disposed inwardly of a perimeter of the upper surface of the light-emitting element in a plan view;a second light-transmissive member having an upper surface and a lower surface with the lower surface of the second light-transmissive member being bonded to the upper surface of the first light-transmissive member, a perimeter of the lower surface of the second light-transmissive member substantially coinciding with or disposed inwardly of a perimeter of the upper surface of the first light-transmissive ...

Backlight module with non-planar lateral structure and liquid crystal display apparatus using the same

A backlight module with a non-planar lateral structure and LCD apparatus using the same are described. The backlight module comprises a light source; and a light guide body comprising a lateral incident surface and a non-planar lateral structure adjacent to the emitting surface and the bottom surface therebetween; wherein the non-planar lateral structure is opposite lateral incident surface, and a first incident light and a second incident light pass through the lateral incident surface and enter the light guide body; and wherein the non-planar lateral structure reflects and refracts the first incident light so that the reflected and refracted light of the first incident light returns from the non-planar lateral structure back to the light guide body, and the returned first incident light and the second incident light are reflected again from the bottom surface and emitted from the emitting surface to an LCD panel.

BACKLIGHT UNIT

A back light unit includes a light source and a light guide unit having a first surface emitting light to a display panel, a second surface facing the first surface, and a plurality of connecting surfaces connecting the first surface and the second surface. The connecting surfaces includes a first side surface, a second side surfaces and a third side surface between the first side surface and a second side surface, A first included angle of the first incident surface and the first diffusion surface is equal to or greater than about 90 degree. 1. A backlight unit comprising:a light source emitting light; anda light guide unit that includes a first surface, a second surface facing the first surface, and a plurality of connecting surfaces connecting the first surface and the second surface, the light guide unit guide the light from the light source to the display panel, the connecting surfaces comprising:a first side surface extending in a first direction;a second side surface facing the first side surface;a third side surface extending in a second direction substantially perpendicular to the first direction; anda first incident surface disposed between the first side surface and the third side surface, the first incident surface receiving the light from the light source and including at least one first serration pattern having a first diffusion surface and a second diffusion surface which is closer to the third side surface than the first diffusion surface,wherein a first included angle of the first incident surface and the first diffusion surface is equal to or greater than about 90 degree.2. The backlight unit of claim 1 , wherein the first included angle is equal to or smaller than 120 degree.3. The backlight unit of claim 2 , wherein the first included angle of the first incident surface and the first diffusion surface is equal to or smaller than 117 degree.4. The backlight unit of claim 3 , wherein the at least one first serration pattern is provided in a plural ...

PEBBLE-PLATE LIKE LOUVRE

The invention provides a lighting unit () comprising (i) a plurality of light sources () for generation of lighting unit light (), and (ii) a light exit unit () for escape of at least part of said lighting unit light () from the lighting unit (), wherein the light exit unit () comprises a louvre unit () comprising a plurality of louvre cells () for beam shaping the lighting unit light (), wherein the plurality of louvre cells () comprises a plurality of n subsets each comprising a respective plurality of m louvre cells (), wherein the louvre cells () of each subset are configured as domain of adjoining louvre cells (), wherein a respective plurality of k louvre cells () within each domain have mutually differing louvre cell cross-sections, wherein 3≤n≤100000, wherein 5≤m≤21, and wherein 5≤k≤m. 1. A louvre unit comprising a plurality of louvre cells for beam shaping the lighting unit light , wherein the plurality of louvre cells comprises a plurality of n subsets each comprising a respective plurality of m louvre cells ,wherein the louvre cells of each subset are configured as domain of adjoining louvre cells, wherein a respective plurality of k louvre cells within each domain have mutually differing louvre cell cross-sections, wherein 3≤n≤100000, wherein 5≤m≤21, and wherein 5≤k≤m,wherein the louvre cells are formed as polygons bounded by a number Ne of louvre walls closing in a loop, wherein for each louvre cell the number Ne is in the range of 3<=Ne<=10,wherein the plurality of louvre cells within the same domain only have C1 symmetry relative to the central point in said domain and each domain comprises at least three polygons of incongruent shape, andwherein each louvre cell has a respective equivalent cross section, the mutual ratio between equivalent cross-sections of louvre cells is in the range of 1:2.5.2. A lighting unit comprising a plurality of LED light sources for generation of lighting unit light claim 1 , and a light exit unit for escape of at least ...

OPTICAL CONSTRUCTIONS INCORPORATING A LIGHT GUIDE AND LOW REFLECTIVE INDEX FILMS

Optical constructions use a low index of refraction layer disposed between a low absorption layer and a high absorption layer to increase confinement of light to the low absorption region of the optical constructions. Low index layers can be used in optical constructions that have multi-tiered light confinement. In these constructions, a first tier of reflection is provided when light is reflected at the surface of a low index optical film which is disposed directly or indirectly on a light guide. A second tier of reflection occurs at the surface of a light redirecting film having appropriately oriented refractive structures. 1. An optical construction , comprising:a light guide having a first surface and a second surface comprising a major light exit surface of the light guide;a high absorbing layer comprising at least one of a reflective polarizer, an absorbing polarizer, a light redirecting film, a multilayer film, inks, dyes, pigments, or scattering materials; anda low index layer disposed between the light guide and the high absorbing layer, the low index layer having an index of refraction not greater than 1.35, the low index layer attached to the second surface of the light guide or to the high absorbing layer.2. The optical construction of claim 1 , wherein the high absorbing layer is an absorbing polarizer.3. The optical construction of claim 1 , wherein the low index film is adhesively attached to the high absorbing layer or the second surface of the light guide.4. The optical construction of claim 1 , wherein the high absorbing layer is a reflective polarizer claim 1 , and the reflective polarizer comprises an extended band polarizer.5. The optical construction of claim 1 , wherein the high absorbing layer is a reflective polarizer claim 1 , and the reflective polarizer comprises a circular polarizer.6. The optical construction of claim 1 , wherein the low index layer increases light confinement in the light guide.7. The optical construction of claim 1 , ...

AUTOMOBILE WITH CONFORMAL FILM-BASED LIGHTGUIDE

An automobile comprises a light transmitting film with a thickness not greater than 0.5 millimeters with a core layer, a lightguide region of the film comprises a light emitting region with light extracting features positioned to receive and extract light from at least one light source propagating by total internal reflection within the core layer out of the core layer, and a light mixing region positioned between the at least one light source and the light emitting region, wherein a surface of the portion of the automobile is visible through the light emitting region of the film when the at least one light source is not emitting light and the light transmitting film is conformal with the surface of the portion of the automobile. The surface of the film may have arcuate cross-sectional shape conforming to a curved surface of the portion of the automobile. 1. An automobile comprising:a portion of the automobile comprising a surface;at least one light source; a body with opposing faces and a thickness not greater than 0.5 millimeters therebetween, a core layer;', 'a lightguide region of the light transmitting film comprising a light emitting region with light extracting features positioned to receive and extract light from the at least one light source propagating by total internal reflection within the core layer out of the core layer in the light emitting region, and', 'a light mixing region positioned along an optical path between the at least one light source and the light emitting region,, 'a light transmitting film comprisingwherein the surface of the portion of the automobile is visible through the light emitting region of the light transmitting film when the at least one light source is not emitting light and the light transmitting film is conformal with the surface of the portion of the automobile.2. The automobile of wherein the light transmitting film further comprises an array of strips extending from the lightguide region of the light transmitting film ...