LIGHT EMITTING DEVICE, METHOD FOR FORMING FLUORESCENT LAYER ON LIGHT EMITTING SEMICONDUCTOR DEVICE AND FLUORESCENT STENCILING COMPOSITION

PURPOSE: A method for forming a light emission layer on an LED(Light Emitting Diode) is provided to uniformly apply a phosphor-containing material to LEDs. CONSTITUTION: A stencil(6) is located on a substrate(4) so that LEDs(2A-2F) provided on the substrate is positioned at openings(8A-8F) of the stencil(6). A stencil composition containing a light-emitting material is deposited at the openings(8A-8F). The stencil(6) is then removed from the substrate(4). The stencil composition is cured to a solid state, thereby obtaining a light emitting device. The light emitting device includes a stack of layers containing a semiconductor layer having an active region, and a layer that contains a light-emitting material, is provided at least around one portion of the stack, and has nearly uniform thickness. The surface of the layer that contains the light-emitting material and is not adjacent to the stack is nearly adjusted to the shape of the stack substantially. © KIPO 2002 ...

Illumination devices including multiple light emitting elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Light emitting diodes with improved light extraction efficiency

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent optical element (e.g., a lens or an optical concentrator) to a light emitting device comprising an active region includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the light emitting device together. A block of optical element material may be bonded to the light emitting device and then shaped into an optical element. Bonding a high refractive index optical element to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.

LIGHT EMITTING DIODES WITH IMPROVED LIGHT EXTRACTION EFFICIENCY

PURPOSE: Light emitting diodes is provided to improve light extraction efficiency. CONSTITUTION: A transparent optical element(2) and a light emitting diode(LED) die(4) to be bonded to each other. The transparent optical element is bonded to the LED die with a transparent bonding layer(6). An active region(12) is a p-n diode junction associated with the interface of layers(8,10). The transparent bonding layers such as bonding layer are formed on both surface(18) of LED die and surface(22) of the optical element. © KIPO 2003 ...

LIGHT EMITTING DEVICE CAPABLE OF REDUCING LOSS DUE TO TOTAL INTERNAL REFLECTION AND A TRANSPARENT LENS ATTACHING METHOD WITH RESPECT TO THE LIGHT EMITTING DEVICE

PURPOSE: A light emitting device and a transparent lens attaching method with respect to the light emitting device are provided to attach a lens with a high refractive index to the light emitting device, thereby improving optical extraction efficiency of the light emitting device. CONSTITUTION: A light emitted device comprises a stack of layers and a transparent adhesive layer. The stack of layers comprises a semiconductor layer including an active region(12). The transparent adhesive layer comprises a transparent lens(2) and an inorganic adhesive material. The transparent lens is attached in the stack by adhesive strength of a boundary surface placed between the stack and transparent lens. The inorganic adhesive material is arranged between the lens and stack and attaches the lens on the stack. COPYRIGHT KIPO 2012 ...

LED AND METHOD FOR ADJUSTING TRANSPARENT LENS ON THE SAME

PURPOSE: A light emitting diode(LED) is provided to improve the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. CONSTITUTION: The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent optical element to a light emitting device comprising an active region includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the light emitting device together. A block of optical element material may be bonded to the light emitting device and then shaped into an optical element. Bonding a high refractive index optical element to a light emitting device improves the light extraction efficiency of the light ...

Indirect Direct Troffer Luminaire

An illumination system is described including a plurality of illumination devices, each device including (i) light-emitting elements (LEEs) arranged along a corresponding first axis; (ii) an optical extractor extending along a corresponding longitudinal axis parallel to the first axis; and (iii) a light guide positioned to receive at a first end of the light guide light emitted by the LEEs and guide it to a second end of the light guide. The optical extractor is optically coupled to the light guide at the second end and is shaped to redirect the light guided by the light guide into a range of angles on either side of the light guide. The illumination devices are connected to each other to form a polygon such that the longitudinal axes of the connected illumination devices lie in a common plane. 1. An illumination system , comprising: a plurality of light-emitting elements (LEEs) arranged along a corresponding first axis;', 'an optical extractor extending along a corresponding longitudinal axis parallel to the first axis; and', 'a light guide positioned to receive at a first end of the light guide light emitted by the LEEs and guide it to a second end of the light guide,', 'wherein the optical extractor is optically coupled to the light guide at the second end, the optical extractor being shaped to redirect the light guided by the light guide into a range of angles on either side of the light guide,, 'a plurality of illumination devices, each illumination device comprisingwherein the illumination devices are connected to each other to form a polygon such that the longitudinal axes of the connected modules lie in a common plane.2. The illumination system of claim 1 , wherein the polygon has a maximum dimension less than 2 feet.3. The illumination system of claim 1 , wherein the polygon is a quadrilateral.4. The illumination system of claim 1 , wherein the polygon comprises four or more illumination devices.5. The illumination system of claim 1 , wherein the optical ...

LIGHT EMITTING DEVICES WITH IMPROVED LIGHT EXTRACTION EFFICIENCY

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant. 119-. (canceled)20. A method comprising:mounting a light emitting device die to a submount through at least one contact element; andbonding an optical element to the light emitting device die after the light emitting device die is mounted to the submount, wherein the bonding of the optical element to the light emitting device die is effected by a bonding layer disposed between the optical element and the light emitting device die.21. The method of claim 24 , wherein the bonding layer comprises an inorganic material.22. The method of claim 24 , wherein bonding comprises elevating a temperature of the optical element claim 24 , the bonding layer claim 24 , the light emitting device die claim 24 , and the submount to a temperature that is less than the melting temperature of the contact element.23. The method of claim 24 , wherein the contact element is on at least one of the bottom surface of the light emitting device die and the top surface of the submount claim 24 , the contact element providing electrical contact between the light emitting device die and the submount. ...

Illumination devices including multiple light emitting elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Solid-state lighting device and method of manufacturing same

The present technology provides a solid-state lighting device and method of manufacturing same. The device can include a carrier substrate having registration features on a first side; light-emitting elements (LEEs) operatively coupled with the registration features; electrically conductive elements (ECEs) operatively coupled with a first side, where the ECEs operatively interconnect the LEEs; and one or more cover layers operatively coupled with the LEEs. The ECEs, furthermore, can be configured to operatively connect the LEEs to a source of power.

Stenciling phosphor layers on light emitting diodes

A method for forming a luminescent layer on a light emitting semiconductor device includes positioning a stencil on a substrate such that a light emitting semiconductor device disposed on the substrate is located within an opening in the stencil, depositing a stenciling composition including luminescent material in the opening, removing the stencil from the substrate, and curing the stenciling composition to a solid state. The resulting light emitting device includes a stack of layers including semiconductor layers comprising an active region and a luminescent material containing layer having a substantially uniform thickness disposed around at least a portion of the stack. A surface of the luminescent material containing layer not adjacent to the stack substantially conforms to a shape of the stack. In one embodiment, the light emitting device emits white light in a uniformly white spatial profile.

LIGHT EMITTING DEVICES WITH IMPROVED LIGHT EXTRACTION EFFICIENCY

A device includes a light emitting structure and a wavelength conversion member comprising a semiconductor. The light emitting structure is bonded to the wavelength conversion member. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with an inorganic bonding material. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with a bonding material having an index of refraction greater than 1.5.

Indirect direct troffer luminaire

An illumination system is described including a plurality of illumination devices, each device including (i) light-emitting elements (LEEs) arranged along a corresponding first axis; (ii) an optical extractor extending along a corresponding longitudinal axis parallel to the first axis; and (iii) a light guide positioned to receive at a first end of the light guide light emitted by the LEEs and guide it to a second end of the light guide. The optical extractor is optically coupled to the light guide at the second end and is shaped to redirect the light guided by the light guide into a range of angles on either side of the light guide. The illumination devices are connected to each other to form a polygon such that the longitudinal axes of the connected illumination devices lie in a common plane.

PHOSPHOR AND WHITE LIGHT LED LAMP USING THE PHOSPHOR

The present invention relates to a tri- color lamp for generating white light. In particular, the invention relates to a phosphor mixture comprising two phosphors having host sulfide materials that can absorb radiation emitted by a light emitting diode, particularly a blue LED. This arrangement provides a mixing of three light sources - light emitted from the two phosphors and unabsorbed light emitted from the LED. The phosphors can contain the same dopant, such as a rare earth ion, to allow matching of the phosphors in relation to the LED emitted radiation. Power fractions of each of the light sources can be varied to achieve good color rendering. The present invention also relates to an alternative to a green LED comprising a single green phosphor that absorbs radiation from a blue LED. A resulting device provides green light of high absorption efficiency and high luminous equivalent values. © KIPO & WIPO 2007 ...

SOLID-STATE LIGHTING DEVICE AND METHOD OF MANUFACTURING SAME

The present technology provides a solid-state lighting device and method of manufacturing same. The device can include a carrier substrate having registration features on a first side; light-emitting elements (LEEs) operatively coupled with the registration features; electrically conductive elements (ECEs) operatively coupled with a first side, where the ECEs operatively interconnect the LEEs; and one or more cover layers operatively coupled with the LEEs. The ECEs, furthermore, can be configured to operatively connect the LEEs to a source of power. 1. A flexible lighting device , comprising:a carrier substrate comprising a first surface, the first surface comprising a plurality of registration features;a plurality of light emitting diode (LED) dies operatively coupled with the registration features; the electrical conductors are configured to electrically connect the LED dies to a source of power, and', 'each LED die of the plurality of LED dies has a plurality of surfaces and a plurality of contacts, the plurality of contacts being disposed on one or more surfaces of the plurality of surfaces and forming electrical interconnections with at least a portion of the electrical conductors; and, 'a plurality of electrical conductors supported by the carrier substrate, whereinone or more cover layers operatively coupled with the carrier substrate to encapsulate the LED dies inside the registration features, wherein the electrical interconnections are disposed within portions of the lighting device that are less than a predetermined distance away from a stress-neutral plane of the lighting device.2. The lighting device of claim 1 , wherein the stress-neutral plane intersects one or more of the plurality of LED dies claim 1 , wherein the stress-neutral plane intersects one or more of the electrical interconnections.3. (canceled)4. (canceled)5. (canceled)6. The lighting device of claim 1 , further comprising a light transmissive substance disposed to at least partially ...

OFF-AXIS ILLUMINATION LED LUMINAIRE

This is directed to a LED light fixture having a shaped light guide array with a CPC reflector for directing light off-axis, and methods for constructing the same. A LED light fixture includes a LED module providing light and an elongated light guide array placed adjacent to the LED module. The elongated light guide array can include a curved outer surface through which light is emitted into an environment. To further control the output of light, and to direct light off-axis, the light guide array can include a CPC reflector disposed around a boundary or periphery of the light guide array. The CPC reflector can be angled such that light is directed at angles above a cut-off angle by which the reflector is rotated about a focus. 1. A light fixture , comprising:a LED module comprising a light emitting surface; and 'an elongated body comprising a primary surface through which light is emitted, the primary surface comprising a curved portion.', 'a light guide array operative to frustrate light from the light emitting surface of the LED module, comprising2. The light fixture of claim 1 , wherein the light guide array further comprises:at least one compound parabolic concentrator reflector positioned adjacent to a portion of the primary surface, wherein the compound parabolic reflector comprises a secondary surface from which light is emitted.3. The light fixture of claim 2 , wherein:the compound parabolic concentrator reflector is operative to direct light at a different angle than light emitted through the primary surface.4. The light fixture of claim 3 , wherein:light directed by the compound parabolic concentrator reflector is directed at an angle less than a cut-off angle associated with the compound parabolic concentrator reflector.5. The light fixture of claim 4 , wherein:the cut-off angle is determined from an orientation of the compound parabolic concentrator reflector relative to a portion of the primary surface.6. The light fixture of claim 1 , wherein:the LED ...

Light Emitting Devices with Improved Light Extraction Efficiency

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.

Red-deficiency-compensating phosphor LED

A light emitting device and a method of fabricating the device utilize a supplementary fluorescent material that radiates secondary light in the red spectral region of the visible light spectrum to increase the red color component of the composite output light. The secondary light from the supplementary fluorescent material allows the device to produce "white" output light that is well-balanced with respect to color for true color rendering applications. The supplementary fluorescent material is included in a fluorescent layer that is positioned between a die and a lens of the device. The die is preferably a GaN based die that emits light having a peak wavelength of 470 nm. The fluorescent layer also includes a main fluorescent material. Preferably, the main fluorescent material is Cerium (Ce) activated and Gadolinium (Gd) doped Yttrium Aluminum Garnet (YAG) phosphor ("Ce:YAG phosphor"). In a first preferred embodiment, the supplementary fluorescent material is a compound that is produced ...

Extruded wide angle lens for use with a LED light source

This is directed to a lens for use with a LED light source. The lens can be placed on a top surface of a light fixture to direct light emitted by a LED module at a wide angle relative to the top surface of the fixture. The lens can include an elongated trench in which several LED light sources can be placed in a line such that light emitted within the trench is re-directed by the lens. The lens can include one or more knobs extending over the trench to facilitate diverting emitted light in a more lateral direction, as opposed to vertical direction. In some cases, the lens can be constructed using an extrusion process by which a lens having a constant cross-section allowing for a wide angle radiation pattern is provided.

Stenciling phosphor layers on light emitting diodes

A method for forming a luminescent layer on a light emitting semiconductor device includes positioning a stencil on a substrate such that a light emitting semiconductor device disposed on the substrate is located within an opening in the stencil, depositing a stenciling composition including luminescent material in the opening, removing the stencil from the substrate, and curing the stenciling composition to a solid state. The resulting light emitting device includes a stack of layers including semiconductor layers comprising an active region and a luminescent material containing layer having a substantially uniform thickness disposed around at least a portion of the stack. A surface of the luminescent material containing layer not adjacent to the stack substantially conforms to a shape of the stack. In one embodiment, the light emitting device emits white light in a uniformly white spatial profile.

Non-incandescent lightbulb package using light emitting diodes

An LED package and a method of fabricating the LED package utilize a prefabricated fluorescent member that contains a fluorescent material that can be separately tested for optical properties before assembly to ensure the proper performance of the LED package with respect to the color of the output light. The LED package includes one or more LED dies that operate as the light source of the package. Preferably, the fluorescent material included in the prefabricated fluorescent member and the LED dies of the LED package are selectively chosen, so that output light generated by the LED package duplicates natural white light. In a first embodiment of the invention, the prefabricated fluorescent member is a substantially planar plate having a disk-like shape. In a second embodiment, the prefabricated fluorescent member is a non-planar disk that conforms to and is attached to the inner surface of a concave lens. In this embodiment, the optical properties of the fluorescent member are tested by ...

Method of forming light emitting devices with improved light extraction efficiency

A method of bonding a transparent optical element to a light emitting device having a stack of layers including semiconductor layers comprising an active region is provided. The method includes elevating a temperature of the optical element and the stack and applying a pressure to press the optical element and the stack together. In one embodiment, the method also includes disposing a layer of a transparent bonding material between the stack and the optical element. The bonding method can be applied to a premade optical element or to a block of optical element material which is later formed or shaped into an optical element such as a lens or an optical concentrator.

LIGHT EMITTING DEVICES WITH IMPROVED LIGHT EXTRACTION EFFICIENCY

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element. 1. A light emitting device having a stack of layers including semiconductor layers comprising an active region , said device comprising:a transparent optical element bonded to a surface of the stack by a bonding layer, wherein the bonding layer is selected from the group consisting of glass having an optical index greater than 1.8, Schott glass SF59, Schott glass LaSF 3, and Schott glass LaSF N18.2. The light emitting device of wherein a smallest ratio of a length of a base of said optical element to a length of said surface is greater than one.3. The light emitting device of further comprising luminescent material included in the bonding layer.4. The light emitting device of wherein the luminescent material is one of quantum dots and nanocrystals.5. The light emitting device of further comprising luminescent material included in the optical element.6. A light emitting device having a stack of layers including semiconductor layers comprising an active region claim 1 , said device comprising:a transparent optical element bonded to a surface of the stack by a bonding layer, wherein the bonding layer is selected from the group consisting of metal oxide, tungsten oxide, titanium oxide, nickel oxide, zirconium oxide, indium tin oxide, and chromium oxide.7. The light emitting device of wherein a smallest ratio of a length of a base of said optical element to a length of said surface is greater than one.8. The light emitting device of further comprising luminescent material included in the bonding layer.9. The light emitting device of wherein the luminescent material is one of quantum dots and nanocrystals.10. The light emitting device of further comprising luminescent material included in the optical element.11. A light emitting ...

Illumination devices including multiple light emitting elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Light emitting diodes with improved light extraction efficiency

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.

Illumination devices including multiple light emitting elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Light emitting devices with improved light extraction efficiency

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent lens having a refractive index for light emitted by the active region preferably greater than about 1.5, more preferably greater than about 1.8. A method of bonding a transparent lens to a light emitting device having a stack of layers including semiconductor layers comprising an active region includes elevating a temperature of the lens and the stack and applying a pressure to press the lens and the stack together. Bonding a high refractive index lens to a light emitting device improves the light extraction efficiency of the light emitting device by reducing loss due to total internal reflection. Advantageously, this improvement can be achieved without the use of an encapsulant.

Off-axis illumination LED luminaire

This is directed to a LED light fixture having a shaped light guide array with a CPC reflector for directing light off-axis, and methods for constructing the same. A LED light fixture includes a LED module providing light and an elongated light guide array placed adjacent to the LED module. The elongated light guide array can include a curved outer surface through which light is emitted into an environment. To further control the output of light, and to direct light off-axis, the light guide array can include a CPC reflector disposed around a boundary or periphery of the light guide array. The CPC reflector can be angled such that light is directed at angles above a cut-off angle by which the reflector is rotated about a focus.

Light guide Luminaire Module for Direct and Indirect Illumination

A luminaire module includes at least one light-emitting element (LEE); a light guide (LG) extending in a first direction from a first end of LG to a second end of LG to receive at the first end light emitted by the LEE and configured to guide the light to the second end; and an optical extractor (OE) optically coupled to LG at the second end to receive light from the LEE guided from the first end to the second end of LG. OE includes a first interface configured to reflect a first portion of the light exiting the LG and transmit a second portion of the light exiting the LG so that the second portion of the light exits OE to an ambient environment in the first direction, and a second interface configured to transmit light incident thereon to the ambient environment in a direction different from the first direction. 1. A luminaire module , comprising:at least one light-emitting element;a light guide extending in a first direction from a first end of the light guide to a second end of the light guide, the light guide being positioned to receive at the first end light emitted by the light-emitting element and configured to guide the light to the second end; and a first interface positioned in a path of light exiting the light guide at the second end and configured to reflect a first portion of the light exiting the light guide and transmit a second portion of the light exiting the light guide so that the second portion of the light exits the optical extractor to an ambient environment in the first direction, and', 'a second interface positioned in a path of the first portion of the light reflected from the first interface, the second interface being configured to transmit light incident thereon to the ambient environment in a direction different from the first direction., 'an optical extractor optically coupled to the light guide at the second end to receive light from the light-emitting element guided from the first end to the second end of the light guide, the optical ...

Light emitting devices with improved light extraction efficiency

A device includes a light emitting structure and a wavelength conversion member comprising a semiconductor. The light emitting structure is bonded to the wavelength conversion member. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with an inorganic bonding material. In some embodiments, the light emitting structure is bonded to the wavelength conversion member with a bonding material having an index of refraction greater than 1.5.

Light emitting devices with improved light extraction efficiency

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.

Light guide luminaire module for direct and indirect illumination

A luminaire module includes at least one light-emitting element (LEE); a light guide (LG) extending in a first direction from a first end of LG to a second end of LG to receive at the first end light emitted by the LEE and configured to guide the light to the second end; and an optical extractor (OE) optically coupled to LG at the second end to receive light from the LEE guided from the first end to the second end of LG. OE includes a first interface configured to reflect a first portion of the light exiting the LG and transmit a second portion of the light exiting the LG so that the second portion of the light exits OE to an ambient environment in the first direction, and a second interface configured to transmit light incident thereon to the ambient environment in a direction different from the first direction.

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting. 1281-. (canceled)282. An illumination device comprising:one or more light-emitting elements (LEEs) operatively disposed on one or more substrates and configured to emit light in a first angular range;one or more primary optics optically coupled with the one or more LEEs and configured to direct light received from the one or more LEEs in the first angular range at one or more input ends of the one or more primary optics, and provide directed light in a second angular range at one or more output ends of the one or more primary optics, a divergence of the second angular range being smaller than a divergence of the first angular range;{'b': '252', 'a light guide optically coupled at an input end of the light guide with the one or more output ends of the one or more primary optics, the light guide shaped to guide light received from the one or more primary optics in the second angular range to an output end of the light guide and provide guided light [] in substantially the same second angular range at the ...

EXTRUDED WIDE ANGLE LENS FOR USE WITH A LED LIGHT SOURCE

This is directed to a lens for use with a LED light source. The lens can be placed on a top surface of a light fixture to direct light emitted by a LED module at a wide angle relative to the top surface of the fixture. The lens can include an elongated trench in which several LED light sources can be placed in a line such that light emitted within the trench is re-directed by the lens. The lens can include one or more knobs extending over the trench to facilitate diverting emitted light in a more lateral direction, as opposed to vertical direction. In some cases, the lens can be constructed using an extrusion process by which a lens having a constant cross-section allowing for a wide angle radiation pattern is provided. 1. A light fixture , comprising:a LED module comprising a plurality of LED packages disposed substantially along an axis, wherein the LED module comprises a light emitting surface; and an elongated body; and', 'a trench extending through the elongated body and providing a primary lens surface, wherein the LED module is operative to be received in the trench, and wherein a maximum light intensity emitted by the LED module is distributed by the lens at an angle wider than 110 degrees from a nadir orientation to the light emitting surface., 'a lens comprising2. The light fixture of claim 1 , further comprising:a fixture comprising a plate and side walls extending from the plate, the plate defining a top surface and a bottom surface, wherein the lens is placed adjacent to the top surface of the plate.3. The light fixture of claim 2 , wherein:the fixture further comprise a notch extending between the side walls and the top surface of the plate, wherein a portion of the lens is operative to engage the notch.4. The light fixture of claim 2 , wherein:the fixture is operative to be hung from a ceiling.5. The light fixture of claim 1 , wherein the elongated body further comprises:a first plate and a second plate positioned on opposite sides of the trench; anda ...

ILLUMINATION DEVICES INCLUDING MULTIPLE LIGHT EMITTING ELEMENTS

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting. 1. An illumination device comprising:a substrate having first and second opposing surfaces, such that each of the first and second surfaces are elongated and have a longitudinal dimension and a transverse dimension shorter than the longitudinal dimension;a plurality of light-emitting elements (LEEs) arranged on the first surface of the substrate and distributed along the longitudinal dimension, such that the LEEs emit, during operation, light in a first angular range with respect to a normal to the first surface of the substrate;one or more solid primary optics arranged in an elongated configuration along the longitudinal dimension of the first surface and coupled with the LEEs, the one or more solid primary optics being shaped to redirect light received from the LEEs in the first angular range, and to provide the redirected light in a second angular range, a divergence of the second angular range being smaller than a divergence of the first angular range at least in a plane perpendicular to the ...

Illumination Devices including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting. 1. An illumination device comprising:one or more light-emitting elements (LEEs) operatively disposed on one or more substrates and configured to emit light in a first angular range;one or more primary optics optically coupled with the one or more LEEs and configured to direct light received from the one or more LEEs at one or more input ends of the one or more primary optics, and provide directed light in a second angular range at one or more output ends of the one or more primary optics, a divergence of the second angular range being smaller than a divergence of the first angular range;a light guide optically coupled at an input end of the light guide with the one or more output ends of the one or more primary optics, the light guide shaped to guide light received from the one or more primary optics to an output end of the light guide and provide guided light in a third angular range at the output end of the light guide; anda solid secondary optic optically coupled with the second end of the light ...

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting. 147-. (canceled)48. A light fixture , comprising:an array of light emitting diodes (LEDs), the array extending along a first direction and the LEDs being arranged to emit light along an axis orthogonal to the first direction; anda light guide module having an input surface extending along the first direction and facing the array of LEDs, the light guide module comprising a first light guide and a second light guide,wherein the first light guide extends along the first direction and is configured to guide at least some of the light received by the light guide module at the input surface in a second direction orthogonal to the first direction, andthe second light guide extends along the first direction and is configured to guide at least some of the light received by the light guide module at the input surface in a third direction orthogonal to the first direction and non-parallel to the second direction.49. The light fixture of claim 48 , wherein the first light guide has an edge extending along the ...

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Light emitting devices with optical elements and bonding layers

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.

Method and Apparatus for Coupling Light-Emitting Elements with Light-Converting Material

Light-emitting elements such as LEDs are associated with light-converting material such as phosphor and/or other material. A donor substrate comprising the light-converting and/or other material is suitably placed relative to a target substrate associated with the light-emitting elements. A laser or other energy source is then used to transfer the light-converting and/or other material in a pattern via writing or masking from the donor substrate to the target substrate in accordance with the pattern. Addressability and targetability of the transfer process facilitates precise patterning of the target substrate.

Stenciling phosphor layers on light emitting diodes

A method for forming a luminescent layer on a light emitting semiconductor device includes positioning a stencil on a substrate such that a light emitting semiconductor device disposed on the substrate is located within an opening in the stencil, depositing a stenciling composition including luminescent material in the opening, removing the stencil from the substrate, and curing the stenciling composition to a solid state. The resulting light emitting device includes a stack of layers including semiconductor layers comprising an active region and a luminescent material containing layer having a substantially uniform thickness disposed around at least a portion of the stack. A surface of the luminescent material containing layer not adjacent to the stack substantially conforms to a shape of the stack. In one embodiment, the light emitting device emits white light in a uniformly white spatial profile.

Tri-color, white light LED lamps

The present invention relates to a tri-color lamp for generating white light. In particular, the invention relates to a phosphor mixture comprising two phosphors having host sulfide materials that can absorb radiation emitted by a light emitting diode, particularly a blue LED. This arrangement provides a mixing of three light sources—light emitted from the two phosphors and unabsorbed light emitted from the LED. The phosphors can contain the same dopant, such as a rare earth ion, to allow matching of the phosphors in relation to the LED emitted radiation. Power fractions of each of the light sources can be varied to achieve good color rendering. The present invention also relates to an alternative to a green LED comprising a single green phosphor that absorbs radiation from a blue LED. A resulting device provides green light of high absorption efficiency and high luminous equivalent values.

Illumination devices including multiple light emitting elements

Backlight for a color LCD using wavelength-converted light emitting devices

Illumination devices including multiple light emitting elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Reduction of contamination of light emitting devices

Solid-state lighting device and method of manufacturing same

The present technology provides a solid-state lighting device and method of manufacturing same. The device can include a carrier substrate having registration features on a first side; light-emitting elements (LEEs) operatively coupled with the registration features; electrically conductive elements (ECEs) operatively coupled with a first side, where the ECEs operatively interconnect the LEEs; and one or more cover layers operatively coupled with the LEEs. The ECEs, furthermore, can be configured to operatively connect the LEEs to a source of power.

Method and apparatus for coupling light-emitting elements with light-converting material

Light-emitting elements such as LEDs (714) are associated with light- converting material such as phosphor and/or other material. A donor substrate (720) comprising the light-converting and/or other material (726) is suitably placed relative to a target substrate associated with the light-emitting elements. A laser (730) or other energy source is then used to transfer the light-converting and/or other material in a pattern (738) via writing or masking from the donor substrate to the target substrate in accordance with the pattern. Addressability and targetability of the transfer process facilitates precise patterning of the target substrate.

Method and apparatus for coupling light-emitting elements with light-converting material

Light-emitting elements such as LEDs are associated with light-converting material such as phosphor and/or other material. A donor substrate comprising the light-converting and/or other material is suitably placed relative to a target substrate associated with the light-emitting elements. A laser or other energy source is then used to transfer the light-converting and/or other material in a pattern via writing or masking from the donor substrate to the target substrate in accordance with the pattern. Addressability and targetability of the transfer process facilitates precise patterning of the target substrate.

Illumination Devices Including Multiple Light Emitting Elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Illumination devices including multiple light emitting elements

A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Method and apparatus for coupling light-emitting elements with light-converting material

Light-emitting elements such as LEDs are associated with light-converting material such as phosphor and/or other material. A donor substrate comprising the light-converting and/or other material is suitably placed relative to a target substrate associated with the light-emitting elements. A laser or other energy source is then used to transfer the light-converting and/or other material in a pattern via writing or masking from the donor substrate to the target substrate in accordance with the pattern. Addressability and targetability of the transfer process facilitates precise patterning of the target substrate.

Solid-state lighting device and method of manufacturing same

The present technology provides a solid-state lighting device and method of manufacturing same. The device can include a carrier substrate having registration features on a first side; light-emitting elements (LEEs) operatively coupled with the registration features; electrically conductive elements (ECEs) operatively coupled with a first side, where the ECEs operatively interconnect the LEEs; and one or more cover layers operatively coupled with the LEEs. The ECEs, furthermore, can be configured to operatively connect the LEEs to a source of power.

Light emitting devices with optical elements and bonding layers

Light emitting devices with improved light extraction efficiency are provided. The light emitting devices have a stack of layers including semiconductor layers comprising an active region. The stack is bonded to a transparent optical element.