АКТИВНЫЕ И ПАССИВНЫЕ ГОЛОГРАФИЧЕСКИЕ ОПТИЧЕСКИЕ ЭЛЕМЕНТЫ, РАСПОЛОЖЕННЫЕ НА ИСКРИВЛЕННОЙ ПОВЕРХНОСТИ

Элемент искривленной поверхности, по меньшей мере часть которого имеет на внутренней или внешней поверхности дифракционную решетку, которая создает у наблюдателя ощущение цвета. Дифракционная решетка может быть голографическим оптическим элементом, присоединенным к искривленной поверхности, или дифракционной голографической картиной, вытесненной на искривленной поверхности. Технический результат - создание рождественских украшений, включающих в себя декоративные голограммы. 4 с. и 40 з.п. ф-лы, 11 ил.

СПОСОБ И ПЛЕНОЧНАЯ СИСТЕМА ДЛЯ ИЗГОТОВЛЕНИЯ ПЕРСОНИФИЦИРОВАННОГО, ОПТИЧЕСКИ ИЗМЕНЯЕМОГО ЭЛЕМЕНТА

Пленочная система содержит тело подложки и тело пленки. Тело пленки содержит два или более слоев и имеет слой (32) жидкокристаллического полимера (ЖКП), содержащий жидкокристаллический материал, при этом тело подложки пленочной системы имеет слой (41) ориентации для ориентации жидких кристаллов. Для создания персонифицированного, оптически изменяемого элемента, имеющего свойства поляризации, тело пленки наносят на тело подложки. Слой (41, 75, 76) ориентации тела подложки персонифицируют до наложения тела пленки на тело подложки. Тело пленки накладывают на персонифицированный слой (41, 75, 96) ориентации тела подложки таким образом, чтобы ЖКП слой (32, 65, 85) тела пленки лежал на персонифицированном слое ориентации тела подложки для ориентации жидких кристаллов слоя ЖКП тела пленки, после чего фиксируют слой ЖКП. Технический результат - уменьшение сложности изготовления и ремонта при сохранении уровня защиты от копирования, устойчивости к истиранию и удобству пользования, получаемому при ...

ЭЛЕМЕНТ ЗАЩИТЫ, ТАКОЙ КАК НИТЬ, ПОЛОСКА И ТОМУ ПОДОБНОЕ, В ОСНОВНОМ ДЛЯ ЦЕННЫХ БУМАГ

Элемент защиты, такой как нить, полоска и т.п., в основном для ценных бумаг, содержащий гибкий несущий слой, который, по меньшей мере на одной стороне, имеет слой металлического материала с участками, толщина металла на которых составляет менее 70% и более 25% толщины слоя металлического материала близлежащих частей, при этом элемент защиты также содержит слой тисненого голографического лака. Предложенное изобретение обеспечивает повышение степени защиты от подделки ценных бумаг. 4 н. и 15 з.п. ф-лы, 5 ил.

МНОГОСЛОЙНОЕ ТЕЛО И СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОСЛОЙНОГО ТЕЛА

Описаны способ изготовления многослойного тела (100), представляющего собой защитный элемент, с частично отформованным первым слоем (3m) и многослойное тело, изготовленное таким способом. Предусмотрено, что в первой области репликационного слоя (3) многослойного тела формуют дифракционную первую рельефную структуру (4), что первый слой (3m) наносят на репликационный слой (3) в первой области и во второй области, в которой рельефная структура в репликационном слое (3) не отформована, что на первый слой (3m) наносят фоточувствительный слой или фоточувствительную смывочную маску в качестве репликационного слоя, что фоточувствительный слой или смывочную маску экспонируют через первый слой (3m), так что фоточувствительный слой или смывочная маска вследствие первой рельефной структуры экспонируются по-разному в первой и во второй областях и что первый слой (3m) удаляют с использованием экспонированного фоточувствительного слоя или смывочной маски в качестве маскирующего слоя в первой области, ...

ЗАЩИТНЫЙ ЭЛЕМЕНТ И ЗАЩИЩЕННЫЙ ОТ ПОДДЕЛКИ ДОКУМЕНТ С ТАКИМ ЗАЩИТНЫМ ЭЛЕМЕНТОМ

Защитный элемент, который предназначен для его заделывания или нанесения на защищенный от подделки документ таким образом, чтобы он был визуально различим с обеих сторон защищенного от подделки документа, и который выполнен многослойным и имеет два создающих цветовой кипп-эффект интерференционных элемента, расположенный между ними металлический отражающий слой и необязательно дифракционные структуры. В зависимости от последовательности размещения указанных слоев и возможно присутствующих дифракционных структур на прозрачной основе цветовой кипп-эффект и/или основанные на дифракции света оптические эффекты можно увидеть с одной или с обеих сторон защитного элемента. Такой защитный элемент пригоден прежде всего для применения в качестве двусторонней «ныряющей» нити, а также в качестве этикетки или переводного элемента, располагаемых поверх имеющегося в защищенном от подделки документе отверстия. Техническим результатом изобретения является повышение степени защиты документа от подделки. 5 ...

РАСТРОВОЕ ИЗОБРАЖЕНИЕ И ТЕРМОГРАФИЧЕСКАЯ ПЛЕНКА ДЛЯ ЕГО ИЗГОТОВЛЕНИЯ

Создаваемое термографическим способом растровое изображение имеет по меньшей мере два вида растровых точек с соответственно различной оптически эффективной структурой. Кроме того, каждая растровая точка может иметь различные размеры. Далее раскрывается термографическая пленка для изготовления указанного растрового изображения, выполненная так, что графический слой в различных областях имеет растровые точки различных размеров для того, чтобы иметь возможность работать с постоянной плотностью точек, но, несмотря на это, иметь возможность создавать на субстрате более или менее плотно пропечатываемые места растрового изображения, которое представляет многосторонние возможности оформления и построения. Из-за специальных структур можно достигать, кроме того, высокой защищенности растровых изображений от подделок, в частности, с помощью цветного копирования. Различная окраска растровых точек достигается различной окраской слоя защитного лака. 2 с. и 12 з.п.ф-лы, 3 ил.

СПОСОБ ПОЛУЧЕНИЯ МИКРОРЕЛЬЕФА НА ПОВЕРХНОСТИ МЕТАЛЛОВ (ВАРИАНТЫ)

Сущность изобретения: в первом варианте на поверхности металла получают оттиск метки с помощью матрицы, прессующая поверхность которой выполнена в виде изготовленной из никеля фольги с голографическим микрорельефом. Предварительно изделие нагревают и выдерживают при температуре выше температуры рекристаллизации металла, но ниже температуры плавления, после чего производят тиснение изделия, прикладывая к его поверхности матрицы прессующее усилие ступенчатого характера, при котором ступень роста напряжения пластической деформации материала изделия чередуется со ступенью падения напряжения. Во втором варианте на металлическую поверхность наносят слой фоторезиста, проводят его оптическую модуляцию и химическую обработку фоторезиста, в процессе которой удаляют его растворимые участки, после чего слой фоторезиста приобретает вид микрорельефной структуры в виде гребней и борозд. Затем из неудаленных участков фоторезиста производят ионнолучевое травление в вакууме аргоном металлической поверхности ...

ВИЗУАЛЬНЫЙ ЭФФЕКТ НА ОСНОВЕ МИКРООПТИЧЕСКОЙ СТРУКТУРЫ ДИФРАКЦИОННОЙ РЕШЕТКИ

... 1. Микрооптическая структура (G) дифракционной решетки, сформированная на подложке (S), причем указанная структура (G) дифракционной решетки сформирована в виде поверхностной структуры, структуры, защищенной защитным слоем, или в виде полностью или частично скрытой структуры, причем структура (G) дифракционной решетки выполнена с возможностью формирования голографического или соответствующего визуального эффекта для наблюдателя, основанного на дифракции света, посредством направления света, дифрагированного от структуры (G) дифракционной решетки и соответствующего длине волны видимого света (λ), по существу, в один или боле дифракционный порядок (m), причем каждый отдельный дифракционный порядок (m) соответствует определенному направлению наблюдения (m, β) визуального эффекта, наблюдаемого на длине волны видимого света (λ), и структура (G) дифракционной решетки выполнена с возможностью оставлять свободный диапазон углов, вследствие чего структура (G) дифракционной решетки, рассматриваемая ...

ЗАЩИТНЫЙ ЭЛЕМЕНТ С ЦВЕТОВЫМ КИПП-ЭФФЕКТОМ И МАГНИТНЫМИ СВОЙСТВАМИ, ПРЕДМЕТ С ТАКИМ ЗАЩИТНЫМ ЭЛЕМЕНТОМ, А ТАКЖЕ СПОСОБ ИЗГОТОВЛЕНИЯ ТАКОГО ЗАЩИТНОГО ЭЛЕМЕНТА И ТАКОГО ПРЕДМЕТА

... 1. Защитный элемент (1, 200) для предметов, прежде всего для ценных документов (200), таких как банкноты и кредитные карты, имеющий несколько расположенных один поверх другого слоев (I, R, М), а именно, по меньшей мере один создающий цветовой кипп-эффект интерференционный элемент (I) и обладающий магнитными свойствами слой (М), отличающийся тем, что между слоем (М) с магнитными свойствами и по меньшей мере одним интерференционным элементом (I) расположен отражающий слой (R). 2. Защитный элемент по п.1, у которого слой (М) с магнитными свойствами и отражающий слой имеют разрывы или вырезы (10, 20) в виде символов, знаков, узоров или рисунков либо кодов. 3. Защитный элемент по п.2, у которого разрывы или вырезы (10) в слое (М) с магнитными свойствами имеют большие размеры по сравнению с размерами разрывов или вырезов (20) в отражающем слое (R) и образуют допускающий автоматическое считывание код (11). 4. Защитный элемент по п.1, который имеет дифракционные структуры. 5. Защитный элемент по ...

ОПТИЧЕСКИЙ ИЗМЕНЯЮЩИЙСЯ ЭЛЕМЕНТ С ПРОМЕЖУТОЧНЫМ СЛОЕМ ИЗМЕНЯЮЩЕЙСЯ ТОЛЩИНЫ

... 1. Оптически изменяющийся элемент, в частности, оптически изменяющийся элемент для защиты банкнот, кредитных карт и т.п., причем оптически изменяющийся элемент содержит последовательность тонкопленочных слоев, по меньшей мере, с одним промежуточным слоем (15) для создания посредством интерференции искажений цвета, причем на первом участке (19а, 19b) последовательности тонкопленочных слоев промежуточный слой (15) имеет иную толщину, чем на втором участке (19с, 19d) последовательности тонкопленочных слоев, причем толщины промежуточного слоя (15) на первом и втором участках выбраны с возможностью создания на первом участке (19а, 19b) последовательности тонкопленочных слоев посредством интерференции первого искажения цвета, а на втором участке (19с, 19d) последовательности тонкопленочных слоев - второго искажения цвета, отличающегося от первого искажения цвета, отличающийся тем, что он содержит дифракционную структуру (17), в частности, для создания дифракционных эффектов, причем дифракционная ...

ЗАЩИТНЫЕ ИЗДЕЛИЯ И УСТРОЙСТВА, СОДЕРЖАЩИЕ КОДИРОВАННЫЕ ГОЛОГРАФИЧЕСКИЕ МИКРОПЛАСТИНЫ, И СПОСОБЫ ИХ ИЗГОТОВЛЕНИЯ

... 1. Защитное изделие для защиты от подделки, аутентификации и/или отслеживания, содержащее материал подложки, включающий в себя, по меньшей мере, одну кодированную голографическую металлическую микропластину, в котором микропластина несет поверхностную рельефную дифракционную структуру, и ее можно аутентифицировать путем проверки с помощью голографического устройства посредством освещения и визуальной проверки с использованием средств увеличения, и которую также можно аутентифицировать путем проверки с увеличением отверстия в металлической микропластине, несущей код аутентификации. !2. Изделие по п.1, в котором, по меньшей мере, одна микропластина включена в поверхность изделия. ! 3. Изделие по п.1 или 2, в котором, по меньшей мере, одна микропластина включена в тело изделия. ! 4. Изделие по пп.1 и 2, в котором материал подложки содержит, по меньшей мере, одну из бумаги, защитной бумаги, горячештампованной фольги, горячештампованной фольги HRI, снабженной дифракционным изображением, листа ...

МНОГОСЛОЙНОЕ ТЕЛО И СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОСЛОЙНОГО ТЕЛА

... 1. Способ изготовления многослойного тела (100, 100') с частично отформованным первым слоем (3m), отличающийся тем, что в первой области репликационного слоя (3) многослойного тела формуют дифракционную первую рельефную структуру (4), первый слой (3m) наносят на репликационный слой (3) в первой области и во второй области, в которой первая рельефная структура в репликационном слое (3) не отформована, с постоянной поверхностной плотностью по отношению к заданной репликационным слоем (3) плоскости, на первый слой (3m) наносят фоточувствительный слой (8) или в качестве репликационного слоя наносят фоточувствительную смывочную маску, фоточувствительный слой или смывочную маску (8) экспонируют через первый слой (3m), так что фоточувствительный слой или смывочная маска (8) вследствие первой рельефной структуры экспонируются по-разному в первой и во второй областях, и первый слой (3m) удаляют с использованием экспонированного фоточувствительного слоя или смывочной маски (8) в качестве маскирующего ...

SICHERHEITSGERÄT

BILDVERBESSERUNG

Authenticity security mark for financial instruments combines color shift with magnetic and reflective layers

In a security printing process, e.g. for bank notes, credit cards or financial instruments, the document incorporates an element consisting of a number of adjacent layers (I, R, M). The layers include a color interference layer (I) and a magnetic layer (M). A reflective layer (R) is especially located between the color shift interference layer (I) and magnetic layer (M). The magnetic layer and reflective layers take the form of patterns, signs or code. The reflective layer incorporates a mirror image legend. The reflective and magnetic layers incorporate a code. An Independent claim is given for manufacture of the invented product.

DOKUMENT MIT EINEM SICHERHEITSMERKMAL UND VERFAHREN ZUR ECHTHEITSPRUEFUNG DES DOKUMENTES

Praegefolie,insbesondere Heisspraegefolie mit einer Magnetschicht

Optisches Sicherheitselement

Optisches Sicherheitselement (1, 4, 7) in Form eines Mehrschichtkörpers mit einem in einem ersten Bereich (13, 74) des Sicherheitselements ausgebildeten Projektionselement (2, 44, 8) zur Umformung von durch das optische Sicherheitselement im ersten Bereich transmittierten Lichts mittels Diffraktion, wobei das Projektionselement (2, 44, 8) eine Vielzahl von ersten Zonen (25, 85) aufweist, in denen eine erste Oberfläche einer Replizierschicht (22, 82) eine erste Oberflächenstruktur aufweist und eine opake metallische Schicht (25, 85) auf der ersten Oberfläche der Replizierschicht (22, 82) angeordnet ist, und eine Vielzahl transparenter zweiter Zonen (26, 86) aufweist, in denen die erste Oberfläche der Replizierschicht eine zweite Oberflächenstruktur (27, 87) mit einem sich von dem Aspektverhältnis der ersten Oberflächenstruktur unterscheidenden Aspektverhältnis aufweist und keine opake metallische Schicht vorgesehen ist, wobei die erste Oberflächenstruktur (88) eine diffraktive Oberflächenstruktur ...

Dekorfolie

The invention relates to a decorative foil that is configured as a layer composite (1) and comprises at least one transparent base foil (2), a transparent cover layer (4) and a dielectric layer (3) arranged between the base foil (2) and the cover layer. When the decorative foil is used as laminating foil for a substrate, the material of the cover layer (4) is an adhesive. A reflecting metal layer (6) is arranged at least in certain parts of the surface between the dielectric layer (3) and the cover layer (4). Optionally, a metal film (11) is also arranged on the side of the dielectric layer (3) facing the base foil (2). The general information shown on the decoration foil is produced by modulating the thickness (s) of the dielectric layer (3). Transparent areas (7) show individual bits of information, wherein the transparent areas (7) are produced with a laser beam (19) by perforating the metal layer (6; 11). The decorative foil can be used both as laminating foil and as packing foil.

Optical device and method of manufacture

SURFACE RELIEF HOLOGRAMS

... 1397447 Surface relief holograms SIEMENS AG 9 June 1972 [29 June 1971] 26920/72 Headings G2J and G2X A surface relief hologram is formed in a surface of a recording medium 4 on a carrier support 3, a reflective layer 5 being applied to the surface relief and carrying a further layer 6 of transparent material of high refractive-index than the record medium; the outer surface 8 of layer 6 being flat. Surface 8 may have an anti-reflection coating. The layer 6 may be solid, e.g. a hardenable or thermosetting organic polymerizable material or a glass. Alternatively layer 6, Fig.2, may be a liquid, e.g. an immersion oil, in which case the liquid is enclosed by a transparent outer plate 7 having a flat surface 8. In the step of recording the hologram a layer of uniform thickness and the same refractive index as layer 6 is located between the object and record medium. This layer is removed prior to developing.

Optically variable devices and method of manufacture

Transfer method and device

A method of manufacturing a transfer device comprising an optically variable transferable layer (3) on a carrier (1). A continuous adhesive layer (6) is coated on the transferable layer (3) and is selectively treated, for example by printing, to provide areas which are not bondable to a substrate under normal transfer conditions. When the treated adhesive layer (6) is contacted with a substrate (8) under normal transfer conditions, only non-treated areas of the adhesive adhere to the substrate so that only areas of the transferable layer (3) corresponding to the non-treated adhesive areas are transferred to the substrate (8) on separation of the carrier (1) and substrate. ...

Transfer method and device

Holographic or diffraction devices

A holographic or diffraction device responsive to interrogation, the device comprising an image-former and an image-concealer; wherein the image-former is adapted such that light reflected from or transmitted through it forms at least one image; wherein the image-concealer acts to attenuate the image; and wherein the attenuation of the image by the image-concealer is alterable responsive to interrogation.

HOLOGRAM

... 1404837 Hologram generation CANON K K 28 July 1972 [28 July 1971 23 Aug 1971] 35515/72 Headings G2C and G2X A method of generating a hologram comprises holographically exposing to actinic radiation a recording member comprising in layer form a photo-sensitive receptor (a) and/or a material (b) and if necessary or desired a support layer, the said photo-sensitive receptor (a) being a material having photo-conductive properties and comprising at least one member selected from a chalcogen glass (as defined herein), and a glass-like organic material, one of the materials (a) and (b) employed being a material capable of diffusing into the other of the materials (a) and (b) employed upon exposure to actinic radiation, provided that when the recording member comprises only one of the materials (a) and (b) the other is present in contact therewith during or immediately after exposure, the exposure producing zones of mutual diffusion of materials (a) and (b) in exposed areas, and if necessary or ...

Application of diffractive elements to substrates

Diffractive device

An optical security device

Apparatus and methods for device quality evaluation

Optically variable devices and method of manufacture

An optically variable device, including a plurality of groups of surface relief elements. The groups are interlaced and/or stacked. A first group of relief elements is characterised by a first height or depth and produces a first type of optical and/or electromagnetic effect. A second group of relief elements is characterised by a second height or depth which is different to the first height or depth. The second group produces a second different type of optical and/or electromagnetic effect than that produced by the first group.

Improvements in or relating to holograms

An integral direct viewing hologram device and an article useful in the manufacture of hologram devices are predicated upon a particular set of components grouped according to a number of permutations. The hologram device comprises a venetian blind film having a hologram embossed on or bonded onto one surface and a plane grating embossed on or bonded onto the other surface, and the article useful in the manufacture of hologram devices comprises a venetian blind film with a plane grating embossed or bonded on one side.

IMPROVEMENTS IN OR RELATING TO HOLOGRAMS

PROCESSES AND PRODUCTS FOR REPRODUCING LIGHT DIFFRACTING PATTERNS

DOUBLE-SIDED HOLOGRAPHIC REPLICAS AND METHOD OF MAKING SAME

... 1448095 Off-axis holograms RCA CORPORATION 27 Sept 1973 [12 Oct 1972] 45270/73 Heading G2J Two holograms are formed, one on each side of a transparent thermoplastic sheet and, by virtue of being recorded with off-axis beams, are decodable separately. A process for replicating the master holograms employs a tape 12 embossed with the appropriate relief patterns by metal masters 80, 90 by pressure from heated calender rolls 60, 66 and then blow cooled at 100, 102.

METHOD OF MAKING A DIFFRACTIVE COMPOSITION

Security Device And Method Of Manufacture Thereof

A method of forming a security device 20 comprises selectively providing a high refractive index (HRI) layer 30 to a first outwardly facing surface of a security device substrate. The HRI layer comprising a substantially transparent host material and particles having a dimension along at least one axis less than 200nm, such that they are substantially non-scattering to visible light. The HRI layer is substantially transparent to visible light. The particles have a refractive index of at least 1.8 and are present within the host material in a proportion such that the resultant refractive index of the HRI layer is at least 1.6. There is disclosed a HRI coating composition having a first subset of particles having a dimension along at least one axis less than 200nm, having a refractive index of at least 1.8 and are present within the host material in a proportion such that the resultant refractive index of the HRI layer is at least 1.6. The HRI coating composition has a second subset of particles ...

Diffractive device

Edible holographic products, particularly pharmaceuticals and methods and apparatus for producing same.

An edible product such as a unit dosage foorm of a pharmaceutically active substance includes a layer of a material that can receive and retain a high resolution microrelief that can convey information. The microrelief is thermo-formable, preferably formed from an aqueous solution of hpmc and/ or hpc plus a plasticizer and colorant. Other additives such as stregheners, surfactants and adherents may be used depending on the application. The materials are selected and proportioned to control the fading or change in color of the visual image or effect produced by the relief to indicate exposure to an unacceptable degree of heat or humidity. The dosage form can be the relief-containing layer itself with the pharmaceutical carried therein. In a preferred form, the layer is an outer coating over a core containing the pharmaceutically active substance. Coated tablets are configured to resist twinning. To produce such dosage forms, the coated core is transported in unison with a flexible mold or ...

Diffractive device

Edible holographic products, particularly pharmaceuticals and method and apparatus for producing same.

Edible holographic products particularly pharmaceuticals and apparatus for producing same

Edible holographic products particularly pharmaceuticals and apparatus for producing same

Diffractive device

SAFETY DEVICE

SAFETY MEMBER WITH DIFFRACTION STRUCTURES

FOIL AND OPTICAL FUSE ELEMENT

PROCEDURE FOR THE PRODUCTION OF A THREE-DIMENSIONAL PICTURE, DIFFRACTION ELEMENT AND A PROCEDURE FOR ITS PRODUCTION

LAMINAR SAFETY MEMBER AND MANUFACTURING PROCESS FOR THE SAME

DIFFRACTION-OPTICALLY ACTIVE PIGMENTS PURE DILEKTRI NATURE

MEANS TO THE WRONGSAFE OF A SUBSTRATE

SAFETY MEMBER, VALUE DOCUMENT AND PROCEDURE FOR THE PRODUCTION OF A SAFETY MEMBER

OPTICALLY VARIABLE ELEMENT WITH PARTIAL TRANSPARENT ELEMENT

SAFETY LAMINATE WITH STAMPED TRANSPARENT ONE INTERMEDIATE LAYER POLYMER HOLOGRAM

SAFETY MEMBER AND SAFETY DOCUMENT WITH SUCH A SAFETY MEMBER

OPTICALLY MIT vARIABLE ELEMENT NICHTHOLOGRAPHISCHEN DATA AND PROCESS FOR PRODUCING THE SAME

PROCEDURE FOR PRODUCING AT LEAST, WITH A THIN LAYER OF METAL COVERING OF RELIEF SAMPLE OF HIGH RESOLUTION ON THERMAL PLASTIC STORAGE MEDIUMS AND COINING/SHAPING DEVICE FOR THE EXECUTION OF THIS PROCEDURE

MULTILEVEL OPTICAL VARIABLE ELEMENT.

THERMOSTATOPLASTI, RELIEF-EXAMINED SHEET MATERIAL.

ARRANGEMENT FOR IMPROVEMENT FALSIFICATION SAFENESS A VALUE DOCUMENT.

DECORATION FOIL

HOLOGRAPHIC SAFETY DEVICE

SAFETY DEVICE

WITH DIFFRACTION OF LIGHT WORKING INDICATOR WITH FULLCOLORABLE INDIVIDUAL PICTURE ELEMENTS USING REFKLEKTIERTEN OR TRANSMITTED LIGHT

HOLOGRAPHIC SAFETY DEVICE

PROCEDURE FOR THE PRODUCTION OF A PICTURE ON A SUBSTRATE, AND THEREBY APPLIED INK

Security documents with personalised images and methods of manufacture

Method for recording data in a holographic form on a lens and a corresponding lens

Method of Producing a Polarisation Pattern in Security Documents

Method of producing a diffractive structure in security documents

Diffractive optical device and method of manufacture

An optical security device

An optical security device is disclosed which includes a diffraction layer having a 5 plurality of diffraction elements and a high refractive index layer, wherein the high refractive index layer is applied on the diffraction layer such that selected regions of the diffraction layer have the corresponding diffraction elements partially uncovered by the high refractive index layer and other regions are substantially covered by the high refractive index layer. Accordingly, the optical security device 10 has a first security feature associated with the diffraction layer and a second security feature associated with the high refractive index layer. An image is viewable from the regions of the high refractive index layer, either, covertly by placed an index matched item over the device or, overtly, through selection of the thickness of the high refractive index layer.

Security devices and methods of manufacture thereof

A security device (20) is provided comprising a transparent layer (21) having a first optically variable effect generating relief structure (22) formed in a surface thereof; a reflection enhancing body (23) extending over the first relief structure and following the contour of the first relief on a first side (23a) of the reflection enhancing body; and a second optically variable effect generating relief structure (26) formed in a second side (23b) of the reflection enhancing body. The reflection enhancing body comprises at least a first reflection enhancing layer defining the first and/or second sides of the reflection enhancing body and the first reflection enhancing layer comprises a binder having reflective particles dispersed therein. When the device is viewed through the transparent layer, the optically variable effect of the first relief structure is visible and when the device is viewed from the other side, the optically variable effect of the second relief structure is visible.

Multi-layer body and method for the production thereof

The invention relates to a multi-layer body having a volume hologram layer and a partially opaque layer which is arranged on a surface of the volume hologram layer, said opaque layer being provided in a first region and in a second region. The invention also relates to a method for producing said type of multi-layer body and to a security element and security document comprising said type of multi-layer body.

Electrolessly deposited metal holograms

Information carriers with diffraction structures

Anticounterfeit documentation with see-through and writeable hologram

OPTICALLY VARIABLE SECURITY DEVICES

A security article (10) includes a light transmissive substrate (12) having a first surface and an opposing second surface, with the first surface having an optical interference pattern (14) such as a holographic image pattern or an optical diffraction pattern thereon. A color shifting optical coating (16) is formed on the substrate such as on the interference pattern or on the opposing second surface of the substrate, with the optical coating providing an observable color shift as the angle of incident light or viewing angle changes. Various processes can be utilized to form the security article (10), such as vacuum coating processes, lamination, laser scribing, and laser imaging. The security article (10) can be affixed to a variety of objects through various attachment mechanisms, such as pressure sensitive adhesives or hot stamping processes, to provide for enhanced security measures such as anticounterfeiting.

DOUBLE-SIDED HOLOGRAPHIC REPLICAS AND METHOD OF MAKING SAME

METHOD FOR PRODUCING WIDTH-MODULATED SURFACE RELIEF PATTERNS

AN OPTICAL MATERIAL FOR USE IN DOCUMENTS OF VALUE

An optical material, for use in documents of value, having at least one at least dual-channel hologram for the holographic reconstruction of different images from different directions of observation. Different regions of the hologram are associated with the different channels. The regions of the hologram reconstructing the respective image under incident light have sub-regions which do not take part in the image reconstruction, to a data carrier having at least one optical material. A method for the manufacture of the optical material is also described.

LIFT TRUCK AND LIFT TRUCK OPERATING METHOD

A lift truck comprising a first portion having a carnage mounted on a carriage mast and one or more first wheels, and a second portion distinct from the first and comprising a cab mounted on a cab mast to enable the raising of the cab and one or more second wheels, the first portion being pivotally mounted relative to the steering of the truck being capable of being effected by adjusting the angle of the first portion relative to the second, wherein substantially all controls for controlling the functioning of the truck during depositing and pickup of goods are arranged so as to permit the raising thereof together with the cab.

SECURITY DEVICE

A security device comprises an optically variable effect generating structure (3, 4). An obscuring layer (7) is located, in use, between the optically variable effect generating structure and a substrate (8) to which the device is secured. A colour layer (6) is also included which exhibits one or more predetermined colours when viewed under certain viewing conditions from the side of the device remote from the obscuring layer. The obscuring layer (7) is substantially opaque under the said certain viewing conditions.

VISUAL EFFECT BASED ON A MICRO-OPTICAL GRID STRUCTURE

The invention relates to a micro-optical grid structure (G) formed on a substrate (S) that is preferably produces as a surface grid structure. The invention also relates to a method for producing said grid structure. Furthermore, the invention relates to a product that comprises one or several pattern areas (A, B, C, D), which single pattern areas are formed by means of the grid structure according to the invention. According to the invention the grid structure (G) is arranged to produce for a viewer a holographic or corresponding visual effect based on the diffraction of light by directing the light diffracted from the grid structure and corresponding to the design wavelength (.lambda.) substantially to only a few diffraction orders (m). Single diffraction order thus corresponds to a certain observing direction of the visual effect observed on said design wavelength. According to the invention the grid structure is arranged to leave a free range of angles between adjacent observing directions ...

METHOD FOR RECORDING DATA IN A HOLOGRAPHIC FORM ON A LENS AND A CORRESPONDING LENS

TRANSPARENT AND SEMITRANSPARENT DIFFRACTIVE ELEMENTS, PARTICULARLY HOLOGRAMS AND THEIR MAKING PROCESS

Transparent and semitransparent diffractive elements, particularly holograms with a diffractive pattern created at least in one of two following layers with different index of refraction: a transparent bearing layer (1) from polymer or copolymer having index of refraction n < 1,7, and a holographic effect-enhancing, high refraction index layer (2) formed by chalcogenide based substances comprising at least one element from the group sulphur, selenium, tellurium, said layer (2) has n > 1,7 and its melting temperature is lower than 900 .degree.C, whereas said substances forming said layer (2) can be binary, ternary and even more complex chalcogenides and/or chalcohalides and/or interchalcogenides systems comprising besides S or Se or Te as a more electropositive element at least one of the following elements of I. tiII V. group periodical table of the elements Cu, Ag, Au, Hg, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, N, P, As, Sb, Bi. Said chalcogenide based substances can further contain at least ...

SECURITY DEVICE

A security device for authenticating bank notes, documents and other items, comprises a luminescent material for producing luminescent radiation of first and second wavelengths. The security device includes an optically variable structure for controlling emission of luminescent radiation of at least one of the first and second wavelengths from the security device, the se-curity device being arranged to permit, from an area of the optically variable structure, emission of luminescence of the first and second wavelengths from the security device. The optically variable structure causes the relative emissivity of the security device for luminescent radiation of the first and second wavelengths to change with a change m emission angle, so that the security de-vice produces an angle-dependent colour shift m the emitted luminescent radiation. The optically variable structure may comprise an optical interference stack that controls transmission of luminescent radiation therethrough in response ...

PHOTO POLYMER COMPOSITIONS AS PRINTABLE FORMULATIONS

The invention relates to applying novel photo polymers based on special urethane acrylates as writing monomers in printing methods which are suitable for producing holographic media, in particular for the visual display of images.

MULTILAYER OPTICALLY VARIABLE ELEMENT

In a multilayer optically variable element, preferably a hologram, comprising an adhesive layer covered by an easily removable cover layer, and at least one layer having the optically variable effect, the protective layer is designed as a self-supporting and dimensionally stable layer with a thickness of a few micrometers.

PROCESS PRINTING MATERIAL AND DEVICE FOR REPRODUCING HOLOGRAPHIC FINE STRUCTURES AND OTHER DIFFRACTION GRIDS ON PRINT PRODUCTS

The description relates to a process for the simultaneous replication and direct application of holograms and other diffraction grids on various printing material (6), especially paper or cardboard. It is carried out in the shaping process using a matrix bearing the hologram as a surface relief structure. One or more coats of lacquer (3, 7, 9) are applied to a printing material (6) with a substantially smooth surface and thus the surface of the printing material (6) is smoothed further. The hologram is simultaneously shaped into the surface of the coating applied to the printing material (6). The lacquer coating (3) can be hardened by radiation and the lacquer costs (3) are hardened from the matrix side through the UV-transpar-ent matrix and through a matrix support (14) (a plate or cylinder) which is also UV-transparent. The lacquer coat(s) (3, 7, 9) is/are essentially hardened before the printing material (6) is removed from the matrix and in contact with the matrix or the shaping cylinder ...

PRINTED GLASS GRATING DECORATIVE PLATE

The present invention provides a printed glass holographic grating decorative plate, to be used chiefly as interior and exterial wall panel for building, fancy floor, articles of daily use and furniture ornaments. According to the present invention, a glass plate (1) is imprinted by means of printing technology with a layer of pattern (2) in coloured printing ink or of vitreous enamel. After heating to make it become solidified or sintering, the glass surface or the printed layer surface is processed to have a layer of adhered transparent resin (3) . Then it is added a layer of resin (5) in grating relief with reflexive metal film (4) . A plate of printed glass grating decorative panel is thus obtained. This product can overcome shortcomings in prior arts. It merges into a single whole the simpleness analogue to those of the natural stones, such as marble and granite and of ceramic tiles, or the artistic pattern of the imprinted glass and the magnificent optical effects of the grating.

HOLOGRAPHICALLY TRANSFERRABLE IMAGES

A holographic image (1) that has been transferred from a conventional polymeric support (2) to a paper tissue support (3) is described in this invention. A host of images may be envisioned and since this image (1), on a paper tissue support (3), may then be wound up in a roll, it can be used as a wrapping element for a host of applications such as in the candy and gum industry; wrapping paper tissue; etc.

Vorrichtung zur Erzeugung einer Abbildung durch Beeinflussung eines kohärenten Wellenfeldes

VALUE DOCUMENT WITH MACHINE-READABLE OPTICAL AUTHENTICITY MARKINGS.

DOCUMENT WITH A SECURITY CHARACTERISTIC AND PROCEDURE FOR THE AUTHENTICITY EXAMINATION OF THE DOCUMENT.

MECHANISM FOR THE AUTHENTICITY EXAMINATION OF DOCUMENTS.

Holographic mirror for optical interconnect signal routing

A holographic mirror 10 for re-directing an optical signal that includes a base 14 having an outer surface 16, and a plurality of discrete nano-structures 12 formed into the outer surface of the base. Each nano-structure has an out-of-plane dimension 20 that is within an order of magnitude of one or both in-plane dimensions 22. The plurality of nano-structures are configured in a repeating pattern with a predetermined spacing 18 between nano-structures for re-directing an optical signal.

Security device

A security device for authenticating bank notes, documents and other items, comprises a luminescent material for producing luminescent radiation of first and second wavelengths. The security device includes an optically variable structure for controlling emission of luminescent radiation of at least one of the first and second wavelengths from the security device, the security device being arranged to permit, from an area of the optically variable structure, emission of luminescence of the first and second wavelengths from the security device. The optically variable structure causes the relative emissivity of the security device for luminescent radiation of the first and second wavelengths to change with a change m emission angle, so that the security device produces an angle-dependent colour shift m the emitted luminescent radiation. The optically variable structure may comprise an optical interference stack that controls transmission of luminescent radiation therethrough in response to the wavelength of luminescent radiation.

Microstructured device and method of fabrication

A security device has a support substrate of a first material having a softening temperature t1 and an embossed layer of a second different material supported by the support substrate having a softening temperature t2, wherein t2<t1. A thin film coating deposited directly upon the embossed layer, wherein the embossed layer is capable of being dissolved in a dissolving agent and wherein the thin film coating is not dissolvable by said dissolving agent. There is not need for an additional release layer as the second different material is dissolvable and allows flakes to be formed by dissolving the second layer.

3-dimensional holographic image displaying apparatus

A 3-dimensional (3D) holographic image displaying apparatus is provided. The apparatus includes a hologram reproducer configured to generate surface plasmons in response to incident light and reproduce a 3D image by diffracting the generated surface plasmons by a hologram, and a surface light source unit including a light source and a light guide plate, the light guide plate being configured to allow incident light from the light source to enter into the light guide plate, internally reflect the allowed light, and output the internally reflected light through a light-output surface, the surface light source unit being configured to implement colors by adjusting an angle of the light incident to the hologram reproducer so that the outputted light through the light-output surface is incident to the hologram reproducer at a surface plasmon-forming angle for each wavelength to generate the surface plasmons corresponding to a plurality of color beams.

Method for forming a structural body and an apparatus for forming a structural body

A method for forming a structural body includes irradiating a substrate with light having a periodic intensity distribution and a wavelength within a wavelength region which allows the substrate to show opacity thereby forming a periodic structure causing optical diffraction on a surface of the substrate.

Freeform holographic imaging apparatus and method

A freeform holographic imaging apparatus includes an imaging table for supporting a substrate, an imaging beam positioned adjacent to the imaging table; and a controller operatively connected to the imaging beam and configured to control a position of the imaging beam with respect to the imaging table. The controller is configured to control the imaging beam to image first and second holographic optical elements on the substrate, wherein each of the first and second holographic optical elements are a single pixel. The first holographic optical element is imaged according to a first parameter set and the second holographic optical element is imaged according to a second parameter set.

Method and apparatus for influencing cash outs from a gaming device

A gaming device is described that provides a number of different methods for cashing out credit balances from a gaming device. These methods include providing incentives, such as benefits, to a player for selecting particular monetary forms in which to receive the cash out. Non-preferred cash out forms may be associated with disincentives, such as penalties, to dissuade players from selecting these types of monetary transfers. In certain embodiments, incentives and disincentives may be associated with a variety of available monetary forms for cash out.

PLASTIC FILMS FOR ID DOCUMENTS WITH BETTER LIGHTNESS OF EMBOSSED HOLOGRAMS

The present invention relates to a layered structure containing at least one layer (i) comprising a thermoplastic material and at least one further layer (ii) comprising a thermoplastic material bearing at least one embossed hologram, to a process for producing such layer composites and to security documents, in particular identification documents, having the layered structure according to the invention. 1. A layered structure containing at least one layer (i) comprising a thermoplastic material and at least one further layer (ii) comprising a thermoplastic material , wherein the vicat softening temperature B/50 of layer (i) as determined according to ISO 306 at 50N and 50°/h is ≥3° C. to ≤45° C. , preferably ≥10° C. to ≤40° C. , particularly preferably ≥15° C. to ≤30° C. , higher or lower than the softening temperature of layer (ii) and in that at least one embossed hologram is applied to the layer (i) or (ii) such that the nanostructure of the at least one embossed hologram points in the direction of the layer having the lower softening temperature.2. The layered structure as claimed in claim 1 , wherein the layers (i) and/or (ii) comprise monofilms and/or multilayer films.3. The layered structure as claimed in claim 1 , wherein the thermoplastic material of the at least one layer (i) and the at least one further layer (ii) is at least one plastic selected from polymers of ethylenically unsaturated monomers and/or polycondensates of difunctional reactive compounds and/or polyaddition products of difunctional reactive compounds or mixtures thereof.4. The layered structure as claimed in claim 1 , wherein the thermoplastic material of the layers (i) and (ii) is selected from the group of polycarbonates or copolycarbonates based on diphenols claim 1 , poly- or copolyacrylates and poly- or copolymethacrylates claim 1 , preferably polymethyl methacrylates (PMMA) claim 1 , poly- or copolymers with styrene claim 1 , preferably polystyrene (PS) or polystyrene acrylonitrile ...

Optical information medium

The object of the present invention is to provide an optical information medium having a colored glossy effect which is single- or multi-colored in regions where a reflective layer is present, but colorless in regions where the reflective layer is absent. The optical information medium of the present invention includes a bonding part (receiving layer), at least one image part, and an adhesive layer (protective layer) covering the at least one image part, wherein each of the image part includes a micro-protrusion/depression structure including part having a micro-protrusion/depression structure on at least a part of the surface opposite to the bonding part, a reflective layer, and a mask layer, in the order from the bonding part (receiving layer), the micro-protrusion/depression structure including part is colorless or colored in one or more translucent or opaque color, and at least one of the micro-protrusion/depression structure including part of the image part is colored in one or more translucent or opaque color.

Method and Master for Producing a Volume Hologram

A method for producing a volume hologram with at least one first area in a first color and at least one second area in a second color includes, providing a volume hologram layer made of a photopolymer; arranging a master with a surface structure on the volume hologram layer; exposing the master using coherent light, wherein light which is incident on at least one first partial area of the surface of the master is diffracted or reflected in the direction of the at least one first area of the volume hologram layer and light which is incident on at least one second partial area of the surface of the master is diffracted or reflected in the direction of the at least one second area of the volume hologram, and wherein the light diffracted or reflected by the first and second partial areas differs in at least one optical property.

METHOD FOR MANUFACTURING SECURITY ELEMENTS AND HOLOGRAMS

The present invention relates to a method for forming a surface relief microstructure, especially an optically variable image (an optically variable device) on a transparent or translucent substrate and a product obtainable using the method. A further aspect of the invention is the use for the prevention of counterfeit or reproduction of a document of value and a method of forming a coating showing an angle dependent color change. 1: A method for forming a surface relief microstructure , especially an optically variable image on a substrate comprising the steps of: a1) an ethylenically unsaturated resin, a monomer or a mixture thereof;', 'a2) a photoinitiator selected from the group consisting of a monoacylphosphine oxide compound and a bisacylphosphine oxide compound; and', 'a3) a metal pigment which is in the form of platelet shaped transition metal particles having a longest dimension of edge length of from 5 nm to 1000 nm, and a thickness of from 1 nm to 100 nm, wherein the metal is Ag;, 'A) applying a curable composition to at least a portion of a front side of the substrate wherein the substrate is transparent or translucent, and wherein the curable composition comprisesB) contacting at least a portion of the curable composition with a surface relief microstructure;C) curing the composition with at least one UV lamp, which is arranged on a backside of the transparent or translucent substrate.2: The method according to claim 1 , wherein the lamp is a gallium or iron doped medium pressure mercury lamp.3: The method according to claim 1 , wherein the curable composition further comprises a second photoinitiator selected from the group consisting of a benzophenone compound claim 1 , an alpha-hydroxy ketone claim 1 , alpha-alkoxyketone claim 1 , and alpha-aminoketone compound.4: The method according to claim 1 , wherein the curable composition comprises:(a) 5.0 to 0.6% by weight of the photoinitiator;(b) 94.9 to 11.9% by weight of the ethylenically unsaturated ...

Metamaterial optical filter and method for producing the same

A metamaterial optical filter including: a transparent substrate; and a photosensitive polymer layer provided to the transparent substrate, wherein the photosensitive polymer layer is treated using a laser to form a non-conformal holographically patterned subwavelength grating, the holographic grating configured to block a predetermined wavelength of electromagnetic radiation. A system and method for manufacturing holographically patterned subwavelength grating onto the photosensitive polymer layer including: applying a photosensitive polymer layer to a transparent substrate; placing the photosensitive polymer layer between a laser and a mirror; scanning the laser over the photosensitive polymer layer such that a holographic grating is created within the photosensitive polymer layer by interaction between the laser light and light reflected from the mirror; and stacking two or more holographically patterned subwavelength grating layers to form complex metamaterial optical filter stacks.

IMAGE DISPLAY DEVICE

An image display device according to an aspect of the present technology includes an emission portion, a transparent base material, an irradiation target, and an optical portion. The emission portion emits image light along a predetermined axis. The transparent base material includes a tapered surface having a tapered shape along the predetermined axis. The irradiation target is disposed at at least a part around the predetermined axis along the tapered surface. The optical portion controls an incident angle of the image light on the irradiation target, the image light having been emitted from the emission portion, the optical portion being disposed in a manner that the optical portion faces the emission portion on the basis of the predetermined axis. 1. An image display device comprising:an emission portion that emits image light along a predetermined axis;a transparent base material that includes a tapered surface having a tapered shape along the predetermined axis;an irradiation target disposed at at least a part around the predetermined axis along the tapered surface; andan optical portion that controls an incident angle of the image light on the irradiation target, the image light having been emitted from the emission portion, the optical portion being disposed in a manner that the optical portion faces the emission portion on a basis of the predetermined axis.2. The image display device according to claim 1 , whereinthe transparent base material has a first surface that is on a side of the predetermined axis, and a second surface that is on a side opposite to the first surface, andthe tapered surface is formed on at least one of the first surface or the second surface.3. The image display device according to claim 2 ,wherein the transparent base material supports the irradiation target.4. The image display device according to claim 3 ,wherein the irradiation target is disposed on at least one of the first surface or the second surface.5. The image display ...

Method for Holographic Mastering and Replication

A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each containing a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram.

Method for Holographic Mastering and Replication

A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each containing a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram. 1. A method for producing a pluarlity of holograms with a plurality of prescriptions from common master hologram , the method comprising:providing a master hologram configured to provide diffracted and zero-order beams angles for each of a plurality of incident beam directions;providing an intermediate holographic medium;providing a contact copy holographic medium;providing a light source to provide a plurality of incidence angles on said master hologram;illuminating said master hologram with a light of a first polarization in a first direction;diffracting said light into a zero order beam in said first direction and a diffracted beam in said second direction using said master hologram;interfering said zero order beam and said diffracted beam in said intermediate holographic medium to form an intermediate master hologram;placing said intermediate master hologram in contact with said contact copy holographic medium;further illuminating an external surface of said intermediate master hologram with a second light in said first direction, said intermediate master hologram diffracting said second light into a second zero order beam in said first direction and a second diffracted beam in said second direction, said second diffracted and second first order beams interfering in said contact copy holographic medium ...

Multi-Layer Body and Method for the Production Thereof

A security document having a security element including a multilayer body with a volume hologram layer and a partial opaque layer, arranged on a surface of the volume hologram layer, which is present in a first area and is not present in a second area.

Process for forming rainbow and hologram images on papers

A process is provided for embossing a fibrous sheet with rainbow or hologram images, without the use of elevated temperatures, or the use of pre-wetting or softening agents.

Method of building a 3d functional optical material layer stacking structure

Embodiments herein describe a sub-micron 3D diffractive optics element and a method for forming the sub-micron 3D diffractive optics element. In a first embodiment, a method is provided for forming a sub-micron 3D diffractive optics element on a film stack disposed on a substrate without planarization. The method includes forming a hardmask on a top surface of a film stack. Forming a mask material on a portion of the top surface and a portion of the hardmask. Etching the top surface. Trimming the mask. Etching the top surface again. Trimming the mask a second time. Etching the top surface yet again and then stripping the mask material.

Methods and Apparatus for Compensating Image Distortion and Illumination Nonuniformity in a Waveguide

Typical waveguides rely on total internal reflection between the outer surfaces of substrates, which can make them highly susceptible to beam misalignment caused by nonplanarity of the substrates. In the manufacturing of the glass sheets commonly used for substrates, ripples can occur during the stretching and drawing of glass as it emerges from a furnace. Although glass manufacturers try to minimize ripples using predictions from mathematical models, it is difficult to totally eradicate the problem from the glass manufacturing process. Typically, these beam misalignments manifest themselves as image distortions and non-uniformities in the output illumination from the waveguide. Many embodiments of the invention are directed toward optically efficient, low cost solutions to the problem of controlling output image quality in waveguides manufactured using commercially available substrate glass and to the problem of compensating the image distortions and non-uniformity of curved waveguides. 1. A waveguide comprising:a first substrate having first and second surfaces with a surface relief characteristic along a first direction on at least one of the surfaces of the first substrate;a second substrate having first and second surfaces with a surface relief characteristic along a second direction on at least one of the surfaces of the second substrate; andat least one optical layer for modifying at least one of phase, amplitude, and propagation direction of light in contact with the second surface of the first substrate and the first surface of the second substrate, wherein the first and second substrates are configured to confine light to a total internal reflection path.2. The waveguide of claim 1 , wherein the surface relief characteristic of the first substrate comprises a one-dimensional cyclic function.3. The waveguide of claim 1 , wherein the surface relief characteristics of the first and second substrates comprise one-dimensional cyclic functions offset by half a ...

Method and apparatus for influencing cash outs from a gaming device

A gaming device is described that provides a number of different methods for cashing out credit balances from a gaming device. These methods include providing incentives, such as benefits, to a player for selecting particular monetary forms in which to receive the cash out. Non-preferred cash out forms may be associated with disincentives, such as penalties, to dissuade players from selecting these types of monetary transfers. In certain embodiments, incentives and disincentives may be associated with a variety of available monetary forms for cash out.

SURFACE RELIEF VOLUME REFLECTIVE DIFFRACTIVE STRUCTURE

A surface relief structure includes a recording medium configured to be structurally modified when exposed to interfering and non-interfering portions of radiation beams, the structurally modified recording medium including, when viewed in a two-dimensional cross-section along one of the axes of the recording medium a plurality of equally spaced steps of fine-sized periodicity superimposed upon a plurality of deep depressions of substantially coarse-sized periodicity. The structurally modified recording medium is configured to produce in reflection single and multiple colors in a broad spectral range when illuminated by a source of light. 143.-. (canceled)44. A surface relief structure comprising: a top surface which lies substantially in an x-y plane;', 'a plurality of deep depressions with coarse-sized periodicity, the plurality of deep depressions extending from the top surface inwards along a z-axis perpendicular to the x-y plane into the recording medium and arranged as a cross-grating with a contiguous array of openings of the plurality of deep depressions, the array of contiguous openings including an x-axis periodicity and y-axis periodicity such that each opening of the array has dimensions equal to one x-axis period and one y-axis period; and', 'a plurality of pyramidal structures with substantially equal height steps of fine-sized periodicity, each of the plurality of pyramidal structures being asymmetrically superimposed upon a respective one of the plurality of deep depressions such that a top of the each of the plurality of pyramidal structures is located at an off-center position of the opening of a respective one of the plurality of deep depressions, and a base of the each of the plurality of pyramidal structures is located at a bottom of the respective one of the plurality of deep depressions, with the base of the each of the plurality of pyramidal structures having a larger surface area than the top of the each of the plurality of pyramidal ...

IMAGE DISPLAY AND LABELED DEVICE

An image display according to an embodiment includes a first image-displaying portion that displays first information about a certain object as a first image of object color, and a second image-displaying portion that displays second information about the object as a second image of structural color provided by a relief structure, the relief structure including at least one structure selected from the group consisting of diffraction grating, hologram, and light-scattering structure having an anisotropic light-scattering property. According to an example, the object is a person, and the first image includes a facial image of the person. A labeled article according to another embodiment includes the image display, and a substrate supporting the image display. 1. A labeled article comprising:an image display; anda substrate supporting the image display,wherein the image display comprises:a first image-displaying portion that displays first information about a certain object as a first image of object color; an underlayer, the second image-displaying portion being provided on the underlayer, wherein', 'a reflection layer is formed on the at least a part of the surface of the relief structure, the reflection layer being made of metal, metal oxide, or intermetallic compound,, 'a second image-displaying portion that displays second information about the object as a second image of structural color provided by a relief structure, the relief structure including at least one structure selected form the group consisting of diffraction grating and hologram; and'}the second image-displaying portion is made of a plurality of dot-shaped portions arranged in a two-dimensional manner,the object is a person, the first image includes a facial image of the person, and the second image includes a same facial image as the facial image included in the first image, and a relief structure formation layer facing the underlayer and having the relief structure on a surface thereof that faces ...

TOOL SURFACE NANO-STRUCTURE PATTERNING PROCESS

Method of patterning a surface of an object or a tool with nano and/or micro structure elements having dimensions in a range of 1 nanometer to 1 millimeter, comprising the steps of producing a flexible mask with said nano or micro structure pattern formed on a surface of said flexible mask, chemically activating said surface of the flexible mask and/or said surface to be patterned of the tool, placing said patterned surface of the flexible mask in contact with said surface to be patterned of the object or tool, promoting a covalent bonding reaction between said patterned surface of the flexible mask in contact with said surface to be patterned, removing the flexible mask from the tool whereby a layer of said flexible mask remains bonded to said surface to be patterned of the tool, etching said surface to be patterned of the tool whereby the bonded layer of flexible mask material resists etching. An anti-activation mask defining a periphery of the surface area to be patterned, or peripheries of the surface area to be patterned if there are a plurality of separate portions of surface area to be patterned, is deposited on the flexible mask prior to placing the patterned surface of the flexible mask on the surface to be patterned. The anti-activation mask prevents bonding of the flexible mask to the surface of the object or tool in areas where the anti-activation mask is present. 115-. (canceled)16. Method of patterning a surface of an object or a tool with nano and/or micro structure elements , comprising the steps of:producing a flexible mask with said nano or micro structure pattern formed on a surface of said flexible mask;chemically activating said surface of the flexible mask and/or a surface to be patterned of the object or tool, placing said patterned surface of the flexible mask in contact with said surface to be patterned of the object or tool, said chemical activation configured to modify chemical properties at the surface of the flexible mask or surface to ...

METHOD AND SYSTEM FOR PATTERNING A LIQUID CRYSTAL LAYER

In some implementations, an optical master is created by using a nanoimprint alignment layer to pattern a liquid crystal layer. The nanoimprint alignment layer and the liquid crystal layer constitute the optical master. The optical master is positioned above a photo-alignment layer. The optical master is illuminated and light propagating through the nanoimprinted alignment layer and the liquid crystal layer is diffracted and subsequently strikes the photo-alignment layer. The incident diffracted light causes the pattern in the liquid crystal layer to be transferred to the photo-alignment layer. A second liquid crystal layer is deposited onto the patterned photo-alignment layer, which subsequently is used to align the molecules of the second liquid crystal layer. In some implementations, the second liquid crystal layer in the patterned photo-alignment layer may be utilized as a replica optical master or as a diffractive optical element, such as for directing light in optical devices such as display devices, including augmented reality display devices. 1. A method of forming a patterned liquid crystal layer , the method comprising: an alignment layer including surface relief features, and', 'a liquid crystal layer on the surface relief features, wherein liquid crystal molecules of the liquid crystal layer define a liquid crystal pattern;, 'providing an optical master comprisingproviding a photo-alignment layer disposed on a substrate; andreplicating the liquid crystal pattern in the photo-alignment layer by propagating light through the optical master to the photo-alignment layer.2. The method of claim 1 , wherein the alignment layer is formed by imprinting the surface relief features in the alignment layer.3. The method of claim 1 , wherein the surface relief features comprise nanostructures and the liquid crystal layer is disposed on the alignment layer such that the liquid crystal molecules align with the nanostructures claim 1 , wherein the nanostructures comprise ...

AZIMUTHALLY MODULATED SCATTERING DEVICE

Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification. 1. (canceled)2i. A method for manufacturing an optical element comprising a region with an anisotropic surface relief microstructure , which has zones with different anisotropy directions θ , wherein information is encoded in a frequency distribution of the zones with the different anisotropy directions , the method comprising providing the information to be encoded;defining the number of different anisotropy directions θi to be used for encoding;defining a frequency distribution fi(θi) of zones with different anisotropy directions, the frequency distribution fi(θi) representing the information to be encoded;determining a positional orientation distribution of zones with different anisotropy directions θi, the positional orientation distribution fitting with the determined frequency distribution, andmanufacturing the optical element comprising the region with the anisotropic surface relief microstructure, which has zones with different anisotropy directions θi, according to the determined positional orientation distribution.3. The method of claim 2 , wherein an average diagonal or diameter of the region is larger than 0.5 mm.4. The method of claim 2 , wherein an average diagonal or diameter of the region is larger than 2 mm.5. The method of claim 2 , wherein the number of different anisotropy directions is 3 claim 2 , 4 or 5.6. The method of claim 2 , wherein the anisotropic surface relief microstructure is non-periodic.7. The method of claim 6 , wherein an average structure depth of the non-periodic claim 6 , ...

Method for manufacturing security elements and holograms

The present invention relates to a method for forming a surface relief microstructure, especially an optically variable image (an optically variable device) on a transparent or translucent substrate and a product obtainable using the method. A further aspect of the invention is the use for the prevention of counterfeit or reproduction of a document of value and a method of forming a coating showing an angle dependent color change.

HOLOGRAPHIC SECURITY DEVICE AND METHOD OF MANUFACTURE THEREOF

A holographic security device includes a holographic image layer which when illuminated exhibits the optically variable effect of viewing first and second overlapping patterns of elements, wherein; the first pattern of elements includes a first set of image elements and at least a second set of image elements, and the pitches and relative locations of the first and second patterns of elements are such that, upon illumination of the device; at a first viewing position of the security device the first set of image elements are exhibited by the holographic image layer and at a second, different viewing position of the security device the second set of image elements are exhibited by the holographic image layer. Also, an associated method of manufacture of the security device. 151-. (canceled)52. A method of manufacturing a holographic image layer for a security device , comprising:providing a holographic recording medium;providing first and second overlapping patterns of elements, and;holographically recording, in the holographic recording medium, the optically variable effect generated by illuminating the first and second overlapping patterns of elements, wherein;the first pattern of elements comprises a first set of image elements and at least a second set of image elements, and;the pitches and relative locations of the first and second patterns of elements are such that, upon illumination of the holographic image layer, at a first viewing position of the holographic image layer the first set of image elements are exhibited and at a second, different viewing position of the holographic image layer the second set of image elements are exhibited.53. The method of claim 52 , wherein at least one of the first and second patterns of elements claim 52 , or both in combination claim 52 , define indicia.54. A method of manufacturing a holographic image layer for a security device claim 52 , comprising:providing a holographic recording medium;providing first and second ...

SURFACE FUNCTIONALIZED TITANIUM DIOXIDE NANOPARTICLES

The present invention relates to surface functionalized titanium dioxide nanoparticles, a method for its production, a coating composition, comprising the surface functionalized titanium dioxide nanoparticles and the use of the coating composition for coating holo-grams, wave guides and solar panels. Holograms are bright and visible from any angle, when printed with the coating composition, comprising the surface functionalized tita-nium dioxide nanoparticles. 2: The surface functionalized titanium dioxide nanoparticles according to claim 1 , which have a size from 1 nm to 40 nm.3: The surface functionalized titanium dioxide nanoparticles according to claim 1 , wherein the weight ratio of titanium dioxide nanoparticles to phosphonate(s) of formula (I) and alkoxide(s) of formula (II) and (III) is in the range of from 99-1 to 50-50.4: The surface functionalized titanium dioxide nanoparticles according to claim 3 , wherein the weight ratio of phosphonate(s) of formula (I) and alkoxide(s) of formula (II) and (III) varies from 1-99 to 50-50.5: The surface functionalized titanium dioxide nanoparticles according to claim 1 , which exhibit a refractive index of greater than 1.70 claim 1 , when coated on a glass plate and dried at 60° C.9: A coating composition claim 1 , comprising the surface functionalized titanium dioxide nanoparticles according to and a solvent.10: A security claim 1 , or decorative element claim 1 , comprising a substrate claim 1 , which may contain indicia or other visible features in or on its surface claim 1 , and on at least part of the said substrate surface claim 1 , a coating claim 1 , comprising the surface functionalized titanium dioxide nanoparticles according to .11: A method for forming a surface relief microstructure on a substrate claim 1 , the method comprising:a) forming a surface relief microstructure on a discrete portion of the substrate; and{'claim-ref': {'@idref': 'CLM-00009', 'claim 9'}, 'b) depositing the coating composition ...

SECURITY ELEMENT WITH PATTERN AND DOUBLE-SIDED HOLOGRAPHIC EFFECT

A security element is described includes a transparent first layer having a holographic surface structure, a first metal layer arranged on the first layer in a first pattern having transparent and non-transparent regions and a holographic surface structure, a second layer having a second holographic surface structure, and a second metal layer arranged on the second layer in a second pattern having transparent and non-transparent regions and a holographic surface structure. The, transparent regions of the first metal layer and the second metal layer are arranged to at least partly overlap each other and the non-transparent regions of the metal layers develop holographic effects on both sides of the security element which effects may be different. A process is described for making the security element, wherein an embossable radiation-sensitive polymer material is used to form the second layer. 1. A security element , comprising:a transparent first layer having a holographic surface structure,a first metal layer arranged on said first layer in a first pattern having transparent and non-transparent regions and a holographic surface structure,a second layer having a second holographic surface structure, anda second metal layer arranged on said second layer in a second pattern having transparent and non-transparent regions and a holographic surface structure, wherein said transparent regions of said first metal layer and said second metal layer are arranged to at least partly overlap each other.2. The security element according to claim 1 , wherein said transparent and nontransparent regions of the first layer and the second layer are in register claim 1 , so that the security element displays a pattern on one side and a mirrored pattern on the other side claim 1 , when inspected in transmitted light.3. The security element according to claim 1 , wherein the holographic surface structure of the first metal layer is different from the holographic surface structure of the ...

Information recording medium and method of reading information recording medium, and image detection apparatus

In an information recording medium, in which an information recording medium has diffraction grating cells arranged therein, a plurality of types of the diffraction grating cells make up one information recording area. At least one type of the diffraction grating cells included in the diffraction grating cells making up the information recording area are information recording elements, while the other types of the diffraction grating cells included in the diffraction grating cells making up the information recording area are information hiding elements. The information is recorded by two-dimensional arrangement of the diffraction grating cells constituting the information recording elements in the information recording area.

Multilayer Body and Method for Producing a Security Element

A multilayer body () and a method for producing a security element are described. The multilayer body has a metal layer (). An optically active surface relief is molded at least in areas in a first surface of the metal layer () facing the upper side of the multilayer body or forming the upper side of the multilayer body and/or in a second surface of the metal layer () facing the underside of the multilayer body or forming the underside of the multilayer body. In at least one first area ( to ) of the multilayer body the surface relief is formed by a first relief structure (). In at least one direction () determined by an allocated azimuth angle, the first relief structure () has a sequence of elevations () and depressions (), the elevations () of which follow on from each other with a period P which is smaller than a wavelength of visible light, wherein the minima of the depressions () lie on a base surface and the first relief structure () has a relief depth t which is determined by the spacing of the maxima of the elevations () of the first relief structure () from the base surface in a direction perpendicular to the base surface. The profile shape and/or the relief depth t of the first relief structure () is chosen such that the colored appearance of the light () incident on the first area ( to ) at least at a first angle of incidence and directly reflected by the metal layer () in the first area or directly transmitted through the metal layer is modified, in particular is modified by plasmon resonance of the metal layer with the incident light. 1. A security element for security documents , the security element comprising a multilayer body with a first surface facing an upper side of the multilayer body and a second surface facing an underside of the multilayer body , wherein the multilayer body has a metal layer ,wherein an optically active surface relief is molded in areas of at least one of the first and second surfaces, andwherein, in at least one first area ...

METHOD FOR HOLOGRAPHIC MASTERING AND REPLICATION

A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each having a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram. 1. A method for mastering and replicating holograms , the method comprising:a) providing N substrates each containing a first hologram for diffracting incident light from a first direction into diffracted light in a second direction; providing a second holographic recording medium; and providing a third holographic recording medium;b) stacking in sequence the first holograms 1-N onto said second holographic recording medium;c) illuminating external surface of said first hologram N with light of a first polarization in a first direction;d) said first holograms 1-N diffracting said light into zero order light in said first direction and diffracted light in said second direction;e) said first direction light and said second direction light interfering in said second holographic recording medium to form a second hologram;f) placing said second hologram in contact with said third holographic recording medium;g) illuminating external surface of said second hologram with light in said first direction;h) said second hologram diffracting said light into zero order light in said first direction and diffracted light in said second direction; andi) said diffracted and first order light interfering in said third holographic recording medium to form a third hologram.2. The method of wherein said steps c) to i) are repeated ...

CONTROL CIRCUITRY FOR 2D OPTICAL METASURFACES

A 2D hologram system with a matrix addressing scheme is provided. The system may include a 2D array of sub-wavelength hologram elements integrated with a refractive index tunable core material on a wafer substrate. The system may also include a matrix addressing scheme coupled to the 2D array of sub-wavelength hologram elements and configured to independently control each of the sub-wavelength hologram elements by applying a voltage. 1. (canceled)2. A method of operating a 2D hologram system having a 2D array of hologram elements with a matrix addressing scheme , the method comprising:adjusting a binary voltage on a first row to change the first row from an “off” state to an “on” state;applying a first analog voltage to a first column such that the first analog voltage is stored in a first hologram element in the first column and the first row;changing the first row to an “off” state;adjusting a second row from an “off” state to an “on” state;applying a second analog voltage to a second column such that the second analog voltage is stored in a second hologram element in the second column and the second row,wherein each of the 2D array of sub-wavelength hologram elements is integrated with a refractive index tunable core material on a wafer substrate comprising a matrix control circuitry having a 2D array of CMOS transistors.3. The method of claim 2 , wherein the refractive index tunable core material comprises EP polymer.4. A method of operating a hologram system having a 2D array of sub-wavelength hologram elements claim 2 , with a passive matrix addressing scheme claim 2 , the method comprising:applying a first analog voltage to a first ROW line, wherein a first row of a 2D array of sub-wavelength hologram elements is coupled to the first ROW line;applying a second analog voltage to a first COLUMN line, wherein a first column of the 2D array of sub-wavelength hologram elements is coupled to the first COLUMN line;applying a third analog voltage to the first ROW ...

DISPLAY AND ARTICLE WITH LABEL

The present invention provides a display exhibiting high anti-counterfeiting effects and special visual effects. The display of the present invention includes a relief structure-forming layer having a plurality of relief structure-forming areas that are provided on one principal surface side of a light transmissive base, a light reflection layer covering at least a part of the relief structure-forming layer, and a light scattering layer provided on a light reflection layer side of the relief structure-forming layer. The plurality of relief structure-forming areas have a plurality of convexities or a plurality of concavities having a first surface substantially parallel to the principal surface and a second surface substantially parallel to the first surface. In each of the plurality of relief structure-forming areas, a difference in height between the first and second surfaces is substantially constant, and at least one of a difference in height between the first and second surfaces and a height of a virtual plane configured by the first surface is different from the difference in height or a height of the virtual plane of other relief structure-forming areas. The plurality of relief structure-forming areas are arranged in accord with a color image to be displayed. 1. A display comprising:a relief structure-forming layer having a plurality of relief structure-forming areas that are provided on one principal surface side of a light transmissive base;a light reflection layer covering at least a part of the relief structure-forming layer; anda light scattering layer provided by a side of the light reflection layer of the relief structure-forming layer, being imparted with light transmission performance, while being imparted with light scattering performance in at least a part thereof, wherein:the plurality of relief structure-forming areas have a plurality of convexities or a plurality of concavities having a first surface substantially parallel to the principal ...

Method of Metallising Optical Elements Comprising Surface Relief Structures

There is provided a method of forming a metallic structure on an optical element comprising a surface relief structure, the method comprising: applying a metal-containing ink to said surface relief structure to form said metallic structure, wherein the metal-containing ink comprises one or more organic solvents and one or more of: a homogeneously soluble metal salt; a metal complex; or metallic nanoparticles having a size of less than 50 nm. 1. A method of forming a metallic structure on an optical element comprising a surface relief structure , the method comprising:applying a metal-containing ink to said surface relief structure to form said metallic structure, wherein the metal-containing ink comprises one or more organic solvents and one or more of: a homogeneously soluble metal salt; a metal complex; or metallic nanoparticles having a size of less than 50 nm.2. A method according to claim 1 , wherein the metal or metal-containing component comprises a metal or metal ion selected from the group of: silver claim 1 , gold claim 1 , copper claim 1 , ruthenium claim 1 , osmium claim 1 , iridium claim 1 , and platinum.3. A method according to claim 2 , wherein the metal or metal-containing component comprises silver or silver ions.4. A method according to claim 2 , or claim 2 , wherein the or each solvent is selected from the group of: alcohols claim 2 , esters claim 2 , ketones claim 2 , glycol ethers or phenol ethers.5. A method according to any one of the preceding claims claim 2 , wherein at least one solvent has a surface tension less than or equal to 25 dyn/cm.6. A method according to any one of the preceding claims claim 2 , wherein at least one solvent has a surface tension greater than or equal to 30 dyn/cm.7. A method according to any one of the preceding claims claim 2 , wherein said metallic structure has a size in one or more dimensions of between 10 to 500 nm.8. A method according to claim 7 , wherein said metallic structure has a size in one or more ...

Methods and Apparatus for Compensating Image Distortion and Illumination Nonuniformity in a Waveguide

Typical waveguides rely on total internal reflection between the outer surfaces of substrates, which can make them highly susceptible to beam misalignment caused by nonplanarity of the substrates. In the manufacturing of the glass sheets commonly used for substrates, ripples can occur during the stretching and drawing of glass as it emerges from a furnace. Although glass manufacturers try to minimize ripples using predictions from mathematical models, it is difficult to totally eradicate the problem from the glass manufacturing process. Typically, these beam misalignments manifest themselves as image distortions and non-uniformities in the output illumination from the waveguide. Many embodiments of the invention are directed toward optically efficient, low cost solutions to the problem of controlling output image quality in waveguides manufactured using commercially available substrate glass and to the problem of compensating the image distortions and non-uniformity of curved waveguides. 1. A waveguide comprising:a first substrate having first and second surfaces with a surface relief characteristic along a first direction on at least one of the surfaces of the first substrate;a second substrate having first and second surfaces with a surface relief characteristic along a second direction on at least one of the surfaces of the second substrate; andat least one optical layer for modifying at least one of phase, amplitude, and propagation direction of light in contact with the second surface of the first substrate and the first surface of the second substrate, wherein the first and second substrates are configured to confine light to a total internal reflection path,wherein the optical layer comprises a Bragg grating configured as an input grating, a fold grating, or an output grating.2. The waveguide of claim 1 , wherein the surface relief characteristic of the first substrate comprises a one-dimensional cyclic function.3. The waveguide of claim 1 , wherein the ...

AZIMUTHALLY MODULATED SCATTERING DEVICE

Optical elements with anisotropic, patterned surface relief microstructures in which information is encoded in the distribution of the orientation of different zones. From the analysis of the distribution of the light scattered from the element, the orientation distribution in the element and therefore the encoded information can be evaluated. The elements are particularly useful for securing documents and articles against counterfeiting and falsification. 1. An optical element comprising:{'sub': 'i', 'a region with a patterned anisotropic surface relief microstructure, which has zones with different anisotropy directions θ,'}wherein information is encoded in the distribution of zones with the different anisotropy directions.2. The optical element according to claim 1 , wherein the information is encoded by the fraction of the areas of zones with the anisotropy direction along θwith regard to the total area with anisotropic surface relief microstructure in that region.3. The optical element according to claim 1 , wherein the pattern is combined with an OVD feature.4. A method of using an element according to comprising:applying the element to banknotes or other value documents and using the element as a security feature in the banknotes or other value documents.5. A method for evaluating the information encoded in the orientation distribution of an element according to claim 1 , comprising{'sub': 'i', 'detection of the spatial light distribution scattered from an element comprising a region with a patterned anisotropic surface relief microstructure, which has zones with different anisotropy directions θ,'}wherein information is encoded in the distribution of zones with the different anisotropy directions, and{'sub': i', 'i, 'evaluation of the fractions f(θ) from the measured spatial light distribution,'}{'sub': i', 'i', 'i, 'wherein f(θ) is the fraction of the areas of zones with the anisotropy direction along θwith regard to the total area with anisotropic surface ...

ANTI-COUNTERFEITING

One example includes an injection-molded component comprising a surface surrounded by peripheral edges and which is formed via an injection-molding process. The surface includes a three-dimensional surface feature to render the surface as being non-planar across at least a portion of the surface. The surface also includes a plurality of holographic micro-features formed across the surface and being to interact with ambient light to provide a holographic image corresponding to an authentication mark associated with the injection-molded component. 1. An injection-molded component comprising a surface surrounded by peripheral edges and which is formed via an injection-molding process , the surface comprising:a three-dimensional surface feature to render the surface as being non-planar across at least a portion of the surface; anda plurality of holographic micro-features formed across the surface and being to interact with ambient light to provide a holographic image corresponding to an authentication mark associated with the injection-molded component.2. The component of claim 1 , wherein the three-dimensional surface feature is visually apparent to the naked-eye to provide consumer authentication.3. The component of claim 1 , wherein the three-dimensional surface feature comprises at least one curved portion.4. The component of claim 1 , wherein the three-dimensional surface feature is arranged such that a volume of injection-molding material of the surface is approximately equal to a volume associated with a planar surface having approximately equal dimensions with respect to the peripheral edges.5. The component of claim 1 , wherein the plurality of holographic micro-features are arranged to be sensitive to abrasion to provide consumer authentication.6. The component of claim 5 , further comprising a protective barrier that overlays the surface and is to substantially mitigate the sensitivity of the plurality of holographic micro-features to abrasion.7. The ...

Security device and method of manufacture thereof

A method of forming a security device includes selectively providing a high refractive index (HRI) layer to a first outwardly facing surface of a security device substrate, the HRI layer having a substantially transparent host material and particles having a dimension along at least one axis less than 200 nm, such that they are substantially non-scattering to visible light and the HRI layer is substantially transparent to visible light, and wherein; the particles have a refractive index of at least 1.8 and are present within the host material in a proportion such that the resultant refractive index of the HRI layer is at least 1.6. A corresponding security device, as well as security articles and security documents, are also disclosed.

OPTICALLY VARIABLE FILM, APPARATUS AND METHOD FOR MAKING THE SAME

An apparatus for producing an optically variable film includes a laser configured to emit a beam, a telescoping lens section having a first lens and a second lens spaced apart by a first distance and an interferometer configured to direct the beam toward a workpiece. The laser may be operated at a predetermined power level and the first and second lenses are sized and spaced relative to one another to direct the beam onto the workpiece at about 200-230 dots per inch. The workpiece may include a polyethylene terephthalate (PET) layer configured to be ablated by the beam, forming a microstructure in the surface of the layer. The microstructure may be randomized and used to present non-chroma visual effects. 16-. (canceled)7. A method of forming an optically variable film with an apparatus , the apparatus comprising a laser configured to emit a beam , a telescoping lens section having a first lens and a second lens spaced apart by a first distance and an interferometer configured to direct the beam toward a workpiece , the method comprising:operating the laser at a predetermined power level;selecting first and second lens focal lengths and determining the first distance;directing the beam toward the workpiece; andablating the workpiece with the beam to form a microstructure in the workpiece,wherein the beam is emitted from the apparatus onto the workpiece at approximately 200-230 dpi and the workpiece includes a layer of polyethylene terephthalate (PET) exposed to the beam and in which the microstructure is formed.8. The method of claim 7 , wherein the PET layer melts in response to exposure to the beam.9. The method of claim 8 , wherein microstructure is randomized by melting the PET.10. The method of claim 7 , further including forming a UV curable copy of the microstructure from the PET layer.11. The method of claim 10 , further including electroplating the UV curable copy to form a master.12. The method of claim 11 , further comprising pressing the microstructure ...

ACTIVE OPTICAL FILTER FOR SPECTACLE LENSES

An active optical filter adapted for a spectacle lens, the active optical filter configured to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm. 117-. (canceled)18. An active optical filter adapted for a spectacle lens , the active optical filter being configured to filter light radiations over at least one predetermined range of wavelengths , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.19. The active filter according to claim 18 , wherein the central wavelength of the filtering function is greater than or equal to 400 nm and smaller than or equal to 500 nm.20. The active filter according to claim 19 , wherein the central wavelength of the filtering function is greater than or equal to 410 nm and smaller than or equal to 460 nm.21. The active filter according to claim 18 , configured to filter light radiations over at least a second predetermined range of wavelengths claim 18 , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.22. The active filter according to claim 18 , wherein the active filter is further configured to allow shifting the central wavelength of the filtering function between a first value claim 18 , to a second value claim 18 , in a range of 540 nm to 590 nm.23. The active filter according to claim 18 , wherein the active filter is further configured to allow shifting the filtering function between a first range of wavelengths to a second range of wavelengths.24. The active filter according to claim 18 , wherein the active filter comprises at least one cell comprising a transparent material between two transparent supports and at least two transparent electrodes claim 18 , wherein at least one optical property of the transparent material over the ...

Illuminating method using coherent light source

A laser beam (L 50 ) generated by a laser light source ( 50 ) is reflected by a light beam scanning device ( 60 ), and irradiated onto a hologram recording medium ( 45 ). On the hologram recording medium ( 45 ), an image ( 35 ) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (B). The light beam scanning device ( 60 ) bends the laser beam (L 50 ) at the scanning origin (B) and irradiates it onto the hologram recording medium ( 45 ). At this time, scanning is carried out by changing the bending mode of the laser beam with time so that the irradiation position of the bent laser beam (L 60 ) on the hologram recording medium ( 45 ) changes with time. Regardless of the beam irradiation position, diffracted light (L 45 ) from the hologram recording medium ( 45 ) reproduces the same reproduction image ( 35 ) of the scatter plate at the same position. An illumination spot in which speckles are reduced is formed on the light receiving surface (R) of an illuminating object ( 70 ) by the reproduction image ( 35 ) of the hologram.

Method for Manufacturing Holographic Blazed Grating

A method for fabricating a holographic blazed grating is provided. The method includes: coating a photoresist layer on a substrate; performing lithography on the photoresist layer to form a photoresist grating; performing vertical ion beam etching on the substrate by using the photoresist grating as a mask, to form a homogeneous grating by transferring a pattern of the photoresist grating onto the substrate; cleaning the substrate to remove remaining photoresist; performing tilted Ar ion beam scanning etching on the substrate by using the homogeneous grating as a mask, and etching different portions of the substrate by utilizing a obscuring effect of the homogeneous grating mask on the ion beam, to form a triangular groove shape of the blazed grating; and cleaning the substrate to obtain the holographic blazed grating.

FABRICATION OF OPTICAL METASURFACES

The method is provided for fabricating an optical metasurface. The method may include depositing a conductive layer over a holographic region of a wafer and depositing a dielectric layer over the conducting layer. The method may also include patterning a hard mask on the dielectric layer. The method may further include etching the dielectric layer to form a plurality of dielectric pillars with a plurality of nano-scale gaps between the pillars. 1. (canceled)2. A method for fabricating dielectric pillars having a nano-scale gap inbetween , the method comprising:depositing a dielectric layer over a conducting layer;patterning a hard mask on the dielectric layer by a high resolution process; andapplying a plasma to etch a portion of a dielectric layer at a temperature below room temperature in a chamber to form dielectric pillars with the nano-scale gap.3. The method of claim 2 , wherein the nano-scale gap has an aspect ratio of at least 5.4. The method of claim 2 , wherein the plasma comprises a mixture of gases.5. The method of claim 4 , wherein the mixture of gases comprises SFgas for anisotropic etching.6. The method of claim 4 , wherein the mixture of gases comprises CFgas for reducing the etching rate isotropically.7. The method of claim 6 , further comprising increasing the concentration of the CFgas to reduce the undercut of the dielectric pillars.8. The method of claim 7 , further comprising decreasing the concentration of the CFgas to reduce the sidewall angle of the dielectric pillars from the conducting layer.9. The method of claim 3 , wherein the sidewall angle ranges between 80° and 100°.10. The method of claim 2 , further comprising adjusting the pressure of the chamber to reduce the undercut of the dielectric pillars.11. The method of claim 2 , further comprising adjusting the power of the plasma to reduce the undercut of the dielectric pillars.12. The method of claim 2 , wherein the dielectric layer comprises amorphous silicon.13. The method of claim 2 ...

METHOD FOR DETERMINING AUTHENTICITY USING IMAGES THAT EXHIBIT PARALLAX

A method for determining the validity of a parallax image, including: receiving a parallax image's captured two-dimensional image having at least three target identifiers, wherein at least two target identifiers are located at different depth planes in the parallax image; identifying at least three target identifiers in the parallax image's captured two-dimensional image and determining spatial relationship between at least three target identifiers in the two-dimensional image of the parallax image; comparing the spatial relationship of at least three target identifiers in the parallax image's captured two-dimensional image against a predetermined spatial relationship of at least three target identifiers that indicates authenticity; and adjudicating the authenticity of the parallax image based on the degree of difference between spatial relationship of at least three target identifiers in the parallax image's captured two-dimensional image and the predetermined spatial relationship of at least three target identifiers. 1. A method for determining the validity of a parallax image , comprising:receiving a captured two-dimensional image of a parallax image having at least three target identifiers, wherein at least two target identifiers are located at different depth planes in the parallax image;identifying the at least three target identifiers in the captured two-dimensional image of the parallax image and determining the spatial relationship between the at least three target identifiers in the two-dimensional image of the parallax image;comparing the spatial relationship of the at least three target identifiers in the captured two-dimensional image of the parallax image against a predetermined spatial relationship of the at least three target identifiers that indicates authenticity; andadjudicating the authenticity of the parallax image based on the degree of difference between the spatial relationship of the at least three target identifiers in the captured two- ...

NEAR-EYE DISPLAY SYSTEM HAVING OPTICAL COMBINER

An optical waveguide is provided. The optical waveguide includes a base structure and a plurality of grating structures disposed at the base structure. The grating structures include a plurality of in-coupling grating structures configured to couple a plurality of lights into the optical waveguide. At least one of a grating period or a slant angle of a first in-coupling grating structure is different from at least one of a corresponding grating period or a corresponding slant angle of a second in-coupling grating structure. The grating structures also include a plurality of out-coupling grating structures configured to couple the lights out of the optical waveguide. 1. An optical waveguide , comprising:a base structure; and a plurality of in-coupling grating structures configured to couple a plurality of lights into the optical waveguide, wherein at least one of a grating period or a slant angle of a first in-coupling grating structure is different from at least one of a corresponding grating period or a corresponding slant angle of a second in-coupling grating structure; and', 'a plurality of out-coupling grating structures configured to couple the lights out of the optical waveguide., 'a plurality of grating structures disposed at the base structure and comprising2. The optical waveguide of claim 1 , wherein:for at least one of the in-coupling grating structures that couples a light into the optical waveguide, a set of two or more out-coupling grating structures are configured to couple the light out of the optical waveguide, andthe two or more out-coupling grating structures have at least one of a same grating period or a same slant angle.3. The optical waveguide of claim 1 , wherein the base structure comprises a photopolymer material.4. The optical waveguide of claim 3 , wherein the plurality of grating structures comprise a plurality of volume holographic grating structures recorded in the photopolymer material.5. The optical waveguide of claim 1 , wherein the ...

SECURITY ELEMENT WITH PATTERN AND DOUBLE-SIDED HOLOGRAPHIC EFFECT

A method for manufacturing a security element includes forming a first layer from a transparent material, forming a first holographic surface structure on the first layer, metallizing the first layer to form a first metal layer, forming a second layer from a radiation-sensitive polymer, forming a second holographic surface structure on the second layer, metallizing the second layer to form the second metal layer, forming a pattern of a coating on the second metal layer in which the pattern includes regions covered by the coating and regions uncovered by the coating, removal of the metal in regions of the second metal layer which are uncovered by the coating through de-metallization, exposing the de-metallized regions of the second layer to light or radiation, and removal of the metal in regions of the first metal layer that are not covered by the second layer, through de-metallization. 1. A method for manufacturing a security element , comprising:forming a first layer from a transparent material,forming a first holographic surface structure on the first layer,metallizing the first layer to form a first metal layer,forming a second layer from a radiation-sensitive polymer,forming a second holographic surface structure on the second layer,metallizing the second layer to form the second metal layer,forming a pattern of a coating on the second metal layer, said pattern comprising regions covered by the coating and regions uncovered by the coating,removal of the metal in regions of the second metal layer which are uncovered by the coating through de-metallization,exposing the de-metallized regions of the second layer to light or radiation, so as to transfer the radiation-sensitive polymer in the de-metallized regions into a soluble state and removing the soluble radiation-sensitive polymer, andremoving the metal in regions of the first metal layer that are not covered by the second layer through de-metallization,wherein the first holographic surface structure of the ...

Multilayer Body and Method for Producing a Security Element

A multilayer body () and a method for producing a security element are described. The multilayer body has a metal layer (). An optically active surface relief is molded at least in areas in a first surface of the metal layer () facing the upper side of the multilayer body or forming the upper side of the multilayer body and/or in a second surface of the metal layer () facing the underside of the multilayer body or forming the underside of the multilayer body. In at least one first area ( to ) of the multilayer body the surface relief is formed by a first relief structure (). In at least one direction () determined by an allocated azimuth angle, the first relief structure () has a sequence of elevations () and depressions (), the elevations () of which follow on from each other with a period P which is smaller than a wavelength of visible light, wherein the minima of the depressions () lie on a base surface and the first relief structure () has a relief depth t which is determined by the spacing of the maxima of the elevations () of the first relief structure () from the base surface in a direction perpendicular to the base surface. The profile shape and/or the relief depth t of the first relief structure () is chosen such that the colored appearance of the light () incident on the first area ( to ) at least at a first angle of incidence and directly reflected by the metal layer () in the first area or directly transmitted through the metal layer is modified, in particular is modified by plasmon resonance of the metal layer with the incident light. 1. A multilayer body , in particular security element for security documents , with an upper side and an underside , wherein the multilayer body has a metal layer , wherein in a first surface of the metal layer facing the upper side of the multilayer body or forming the upper side of the multilayer body and/or in a second surface of the metal layer facing the underside of the multilayer body or forming the underside of the ...

Holographic viewing device, and holographic viewing card incorporating it

The invention relates to a holographic viewing device that enable printing or the like to be directly applied to a transmission hologram substrate without recourse to any frame for supporting and reinforcing a transmission hologram, thereby simplifying construction while enhancing aesthetic and decorative attributes, and a holographic viewing card incorporating it. The holographic viewing device enables a given image or message to be viewed near the positions of point light sources upon viewing the point light sources through a hologram, and comprises a transparent substrate 41 , a hologram-formation layer 42 and a printing layer 45 . The hologram-formation layer 42 may be any one of a phase type diffractive optical element having a relief structure 43 on its surface, a phase type diffractive optical element having a refractive index profile in its layer, and an amplitude type diffractive optical element having a transmittance profile in its layer.

Fabrication of optical metasurfaces

The method is provided for fabricating an optical metasurface. The method may include depositing a conductive layer over a holographic region of a wafer and depositing a dielectric layer over the conducting layer. The method may also include patterning a hard mask on the dielectric layer. The method may further include etching the dielectric layer to form a plurality of dielectric pillars with a plurality of nano-scale gaps between the pillars.

RECORDING HOLOGRAPHIC DATA ON REFLECTIVE SURFACES

Lighting information comprising at least the reflectance data of a plurality of regions of an object surface is generated and printed out as a series of relightable holograms. Each of the printed holograms comprises the reflectance data of a corresponding region of the object. A model of the object is generated such that the model also comprises a plurality of portions corresponding to the regions of the object surface. The series of holograms are each affixed to a portion of the model such that a particular hologram of the series which encodes the reflectance data of a particular region of the object is affixed to the corresponding portion of the model. In an embodiment, the model of the object is generated from a metal. The series of holograms is engraved directly onto the metallic model such that a particular hologram of the series which encodes the reflectance data of a particular region of the object is engraved onto the corresponding portion of the metallic model. 115-. (canceled)16. A method comprising:receiving, by a first processor, lighting information of a physical model of an object, the object comprising a plurality of regions, the physical model comprises a first physical material and further comprising a plurality of physical model portions, each physical model portion corresponding to a respective one of the object regions, the lighting information comprising reflectance data of the object regions; andprinting, by the first processor with a second physical material, the lighting information comprising the reflectance data of the object regions as a single holographic sheet that is divided into a plurality of separate physical holographic flakes, the number of the divided holographic flakes corresponding to the number of the object regions, each holographic flake comprising a respective hologram of a series of holograms, each hologram of the series comprising at least one holographic pixel that encodes the reflectance data of the respective one of the ...

Multi-Layer Body and Method for the Production Thereof

The invention relates to a multilayer body with a volume hologram layer and a partial opaque layer, arranged on a surface of the volume hologram layer, which is present in a first area and is not present in a second area. The invention furthermore relates to a method for the production of such a multilayer body, as well as a security element and security document with such a multilayer body. 1. A multilayer body with a volume hologram layer and a partial opaque layer , arranged on a surface of the volume hologram layer , which is present in a first area and is not present in a second area.2. The multilayer body according to claim 1 , wherein the multilayer body has a decorative ply claim 1 , wherein the partial opaque layer is arranged between the volume hologram layer and the decorative ply.3. The multilayer body according to claim 1 , wherein the opaque layer has a luminance L* in the CIELAB color space of from 0 to 50.4. The multilayer body according to claim 1 , wherein the first area of the opaque layer covers 1% to 99% claim 1 , of the volume hologram layer.5. The multilayer body according to claim 1 , wherein the opaque layer comprises at least one dye claim 1 , pigment or effect pigment.6. The multilayer body according to claim 1 , wherein the opaque layer comprises a thermoplastic varnish.7. The multilayer body according to claim 1 , wherein the opaque layer has a layer thickness of from 1 μm to 5 μm.8. The multilayer body according to claim 1 , wherein the first and/or second area forms at least a graphic element.9. The multilayer body according to claim 8 , wherein the graphic element comprises an endless motif and/or an individual image motif.10. The multilayer body according to claim 8 , wherein the graphic element is arranged registered relative to a graphic element of the volume hologram layer.11. The multilayer body according to claim 1 , wherein the volume hologram layer is formed from a UV-curing photopolymer.12. The multilayer body according to ...

Holographic security element and method of forming thereof

There is provided a holographic security element including a substrate; and an array of nano-reflectors configured to form a pattern on the substrate and to generate a holographic image corresponding to the pattern at a predetermined distance from the substrate when irradiated with a predetermined light source. In particular, the array of nano-reflectors is configured to generate the holographic image at the predetermined distance to have a size that is larger than a size of the pattern. There is also provided a method of forming the holographic security element, and an article having one or more holographic security elements incorporated therein.

ACTIVE OPTICAL FILTER FOR SPECTACLE LENSES

Active optical filter adapted for a spectacle lens, the active optical filter being configured so as to filter light radiations over at least one predetermined range of wavelengths, wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm. 116-. (canceled)17. An active optical filter adapted for a spectacle lens , the active optical filter being configured to filter light radiations over at least one predetermined range of wavelengths , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.18. The active filter according to claim 17 , wherein the central wavelength of the filtering function is greater than or equal to 400 nm and smaller than or equal to 500 nm.19. The active filter according to claim 18 , wherein the central wavelength of the filtering function is greater than or equal to 410 nm and smaller than or equal to 460 nm.20. The active filter according to claim 17 , wherein the filter is configured to filter light radiations over at least a second predetermined range of wavelengths claim 17 , wherein the full width at half maximum of the filtering function of the optical filter is smaller than or equal to 100 nm.21. The active filter according to claim 17 , wherein the active filter is further configured so as to allow shifting the central wavelength of the filtering function between a first value claim 17 , to a second value claim 17 , for example in the range of 540 nm to 590 nm.22. The active filter according to claim 17 , wherein the active filter is further configured to allow shifting the filtering function between a first range of wavelengths to a second range of wavelengths claim 17 ,23. The active filter according to claim 17 , wherein the active filter comprises at least one cell comprising a transparent material between two transparent supports and at least two transparent electrodes claim 17 , the transparent ...

Additive manufacturing method and apparatus for fabricating a component using acoustic forces to position precursor material

A method of fabricating a component ( 1 ) comprises the steps of providing precursor material in a working medium, creating acoustic forces and positioning the precursor material in the working medium under the effect of the acoustic forces, so that a material distribution is formed, which has a shape of the component to be fabricated, and subjecting at least one of the material distribution and the working medium to a fixation, so that the precursor material of the material distribution or the working medium surrounding the material distribution is bound, wherein the step of creating the acoustic forces includes generating an acoustic interference pattern ( 5 ), and the material distribution ( 4 ) is formed by moving the precursor material ( 2 ) towards energy extrema of the acoustic interference pattern ( 5 ). Furthermore, an apparatus ( 100 ) for fabricating a component ( 1 ) is described.

DISPLAY ASSEMBLY WITH DIFFUSING MEMBER FOR APPEARANCE MATCHING

A display unit includes a display region and a border region. The display region is configured to include a dark state. A diffusing member is positioned adjacent to the border region such that the diffusing member is coextensive with the border region. A first electromagnetic ray bundle incident on the display region in the dark state produces a first bidirectional reflection distribution function. A second electromagnetic ray bundle incident on the border region produces a second bidirectional reflection distribution function. The diffusing member is configured such that the first bidirectional reflection distribution function is substantially identical to the second bidirectional reflection distribution function. The diffusing member may include a base layer and a surface hologram recorded onto the base layer. The surface hologram is configured to encode a spatial pattern in at least one of the opacity, density, and surface height of the base layer. 1. A display assembly comprising:a display unit having a display region and a border region, the display region configured to include a dark state;a diffusing member positioned adjacent to the border region such that the diffusing member is coextensive with the border region;wherein the display region is configured such that a first electromagnetic ray bundle incident on the display region in the dark state produces a first bidirectional reflection distribution function;wherein the border region is configured such that a second electromagnetic ray bundle incident on the border region produces a second bidirectional reflection distribution function; andwherein the diffusing member is configured such that the first bidirectional reflection distribution function is substantially identical to the second bidirectional reflection distribution function.2. The assembly of claim 1 , wherein the diffusing member includes:a base layer; anda surface hologram recorded onto the base layer, the surface hologram being configured to ...

HOLOGRAPHIC DEVICE

A holographic security or identification device () comprises an object, or a flexible substrate () configured to be conformable to a desired, curved shape; and a plurality of structures () formed on or in the object to have a desired curved configuration, or formed in or associated with the substrate and arranged to adopt a desired curved configuration when the substrate is conformed to a desired shape, wherein the plurality of structures () are configured to receive light () of a selected at least one wavelength or range of wavelengths and to produce, using the received light, a desired holographic image () for security or identification purposes when in the desired configuration. 1. A holographic security or identification device comprising:an object, or a flexible substrate configured to be conformable to a desired, curved shape; anda plurality of structures formed on or in the object to have a desired curved configuration, or formed in or associated with the substrate and arranged to adopt a desired curved configuration when the substrate is conformed to a desired shape,wherein the plurality of structures are configured to receive light of a selected at least one wavelength or range of wavelengths and to produce, using the received light, a desired holographic image for security or identification purposes when in the desired configuration.2. A device according to claim 1 , wherein the desired holographic image comprises at least one feature that comprises or represents an identifier.3. A device according to claim 2 , wherein the plurality of structures are arranged such that distortion of the flexible substrate away from the desired curved shape causes a degradation of at least one property in the holographic image of said at least one feature that comprises or represents the identifier.4. A device according to claim 2 , wherein the plurality of structures are such that if they have a configuration other than the desired configuration a degradation of at least ...

Method for producing a hologram, and security element and a security document

A method for producing a hologram (1), (1) for security elements (1a) and/or security documents (1b). One or more virtual hologram planes (10) are arranged in front of and/or behind one or more virtual models (20) and/or one or more virtual hologram planes (10) are arranged such that they intersect one or more virtual models (20). One or more virtual light sources (30) are arranged on one or more partial regions of the surface (21) of one or more of the virtual models (20). One or more virtual electromagnetic fields (40) are calculated starting from at least one of the virtual light sources (30) in one or more zones (11) of the one or more virtual hologram planes (10). In the one or more zones (11), in each case, a virtual total electromagnetic field (41) is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields (40) in the respective zone (11). One or more phase images (50) are calculated from the virtual total electromagnetic fields (41) in the one or more zones (11). A height profile (60) of the hologram (1) is calculated from the one or more phase images (50) and the height profile (60) of the hologram (1) is incorporated into a substrate (2) to provide the hologram (1).

Methods and Apparatuses for Providing a Waveguide Display with Angularly Varying Optical Power

Systems and methods for waveguide displays with angularly varying optical power in accordance with various embodiments of the invention are illustrated. One embodiment includes a waveguide display including a source of image modulated light projected over a field of view, and a waveguide including at least one output grating with an optical prescription providing angularly varying optical power for focusing the field of view onto an external surface. In another embodiment, the at least one output grating includes at least one grating prescription providing a first focal length for focusing a first FOV portion onto a first area of the surface and a second focal length for focusing a second FOV portion onto a second area of the surface. In still another embodiment, the at least one output grating includes at least one grating prescription providing a continuously varying focal length across at least a portion of the FOV. 1. A waveguide display comprising:a source of image modulated light projected over a field of view; anda waveguide comprising at least one output grating with an optical prescription providing angularly varying optical power for focusing said field of view onto an external surface.2. The waveguide display of claim 1 , wherein said at least one output grating includes at least one grating prescription providing at least two different focal lengths across said FOV.3. The waveguide display of claim 1 , wherein said at least one output grating includes at least one grating prescription providing a first focal length for focusing a first FOV portion onto a first area of said surface and a second focal length for focusing a second FOV portion onto a second area of said surface.4. The waveguide display of claim 1 , wherein said at least one output grating includes at least one grating prescription providing a continuously varying focal length across at least a portion of said FOV.5. The waveguide display of claim 1 , wherein said external surface subtends an ...

Method for holographic mastering and replication

A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each having a first hologram is stacked on a second holographic recording medium substrate. The first hologram is designed to diffract light from a first direction into a second direction. When expose to illumination from the first direction zero order and diffracted light from each first hologram interfere in the second holographic recording medium substrate forming a second hologram. The second hologram is then copied into a third holographic recording medium substrate to provide the final copy hologram.

Verwendung eines packbands als holographischer datenträger

Ein Packband (3), das eine Polymerfolie aufweist, wird als holographischer Datenträger verwendet. Dabei ist das Packband (3) zum Speichern von holographischer Information eingerichtet. Holographische nformation kann mit Hilfe einer Schreibeinrichtung (4) in das Packband (3) eingegeben werden, bevor ein Gegenstand (1) unter Benutzung des Packbands (3) verpackt wird, aber auch hinterher.

Use of a packaging strip as a holographic data carrier

A packaging tape ( 3 ) which comprises a polymer film is used as a holographic data carrier. The packaging tape ( 3 ) is set up for the storage of holographic information. Holographic information can be put into the packaging tape ( 3 ) with the aid of a writing device ( 4 ), before an object ( 1 ) is packaged by using the packaging tape ( 3 ), but also afterwards.

Holographic films

A multilayer holographic film including a core layer and a hologram-receiving layer having a lower melting point than said core layer on at least one side of the core layer for including an embossed, holographic image therein and being adapted to receive a metal layer thereon, said hologram-receiving layer(s) include(s) a butene-propylene random copolymer having a melting point in the range of between about 125°C and about 145°C and blends thereof; a metallocene catalyzed, isotactic C2/C3 random copolymer with a C2 content of at least about 2% having a melting point in the range of between about 120°C and about 140°C and blends thereof or a high density polyethylene homopolymer having a melting point in the range of between about 120°C and about 135°C and blends thereof.

Ovd containing device

A holographic overlay is provided, including: a polycarbonate substrate having a first side and a second side, a diffractive structure cast upon the first side of the polycarbonate substrate, and a reflection-enhancing coating on at least a part of the diffractive structure; wherein the second side of the polycarbonate substrate provides a substantially flat external surface of the overlay capable of fusing to a conforming surface in the presence of heat and pressure without an adhesive. Optionally, the overlay is laser-engraved so as to form ablated voids in the metal coating and carbonize the laser engravable polycarbonate under the ablated voids. According to another aspect of the invention, a metal coating on a hologram is made substantially transparent using a laser to form a transparent portion of a hologram. Optionally, it is done after applying the hologram to an object such as a card, a document, etc., in register with underlying information to ensure its visibility and continuity of the hologram.

Method for holographic mastering and replication

A method for producing holograms with a multiplicity of holographic prescriptions from a single master is provided. A multiplicity of holographic substrates each containing a first hologram (11-14) is stacked on a second holographic recording medium (40) on a substrate (50). The first hologram is designed to diffract light from a first direction (1000,1015-1018) into a second direction (1011-1014). Optionally, a half wave plate (20) and a linear polarizer (30) are provided between the first hologram stack (10) and the second holographic medium (40). When exposed to illumination from the first direction (1000) zero order and diffracted light from each first hologram interfere in the second holographic recording medium forming a second hologram. The second hologram (40) is then copied into a third holographic recording medium (70) on a substrate (60) to provide the final copy hologram.

Hologram element, illumination device, projector, and method of manufacturing hologram element

A hologram element that forms a predetermined illumination pattern on an irradiated surface by diffracting incident light is disclosed. The illumination pattern is formed by making light in a first wavelength region diffracted in a first region, and the illumination pattern is formed by making light in a second wavelength region different from the first wavelength region diffracted in a second region on the same plane as the first region.

Display with nanostructure angle-of-view adjustment structures

A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode or may be formed from other pixel structures such as liquid crystal display pixel structures. The pixels may emit light such as red, green, and blue light. An angle-of-view adjustment layer may overlap the array of pixels. During operation, light from the pixels passes through the angle-of-view adjustment layer to a user. The viewing angle for the user is enhanced as the angular spread of the emitted light from the pixels is enhanced by the angle-of-view adjustment layer. The angle-of-view adjustment layer may be formed from holographic structures recorded by applying laser beams to a photosensitive layer or may be formed from a metasurface that is created by patterning nanostructures on the display using printing, photolithography, or other patterning techniques.

Beam expansion with three-dimensional diffractive elements

The specification and drawings present a new apparatus and method for using a three-dimensional (3D) diffractive element (e.g., a 3D diffractive grating) for expanding in one or two dimensions the exit pupil of an optical beam in electronic devices. Various embodiments of the present invention can be applied, but are not limited, to forming images in virtual reality displays, to illuminating of displays (e.g., backlight illumination in liquid crystal displays) or keyboards, etc.

Compact holographic human-machine interface

A method of recording an object image of a first hologram as a second hologram is provided. A first hologram is recorded at a first angle of reconstruction and a holographic recording medium is provided. An object beam is directed through the first hologram at the first angle of reconstruction to reconstruct the object image on the recording medium. The recording medium is struck with a reference beam at a second angle of reconstruction to form a wave interference pattern with the object beam. The second angle of reconstruction is between 45 and 90 degrees. The wave interference pattern is recorded.A switch is provided that includes a hologram that has an angle of reconstruction between 45 and 90 degrees. A reproducing light source is positioned to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram.

Diffractive optical elements as combiners

A combiner for combining light traveling on two optical paths to permit coincident viewing of the light includes a light-transmissive substrate having first and second surfaces, the first surface having a first diffractive structure that is a computer-generated hologram formed thereon configured to correct aberrations in light travelling on the first optical path which may be incident on the first surface and a partially reflective coating on the first diffractive structure, the partially reflective coating being reflective in a narrow bandwidth only, the first diffractive structure and the partially reflective coating configured to provide corrected reflection to light travelling on the first optical path, the second surface having a second diffractive structure that is a computer-generated hologram formed thereon as a conjugate of the first diffractive structure, so that light travelling on a second optical path which may be incident on the second surface passes through the second and first diffractive structures with substantially no net affect, whereby a viewer may look at the first surface and see the corrected reflection of the light travelling on the first optical path combined with the substantially unaffected light travelling on the second optical path.

Near-eye display system having optical combiner

An optical waveguide is provided. The optical waveguide includes a base structure and a plurality of grating structures disposed at the base structure. The grating structures include a plurality of in-coupling grating structures configured to couple a plurality of lights into the optical waveguide. At least one of a grating period or a slant angle of a first in-coupling grating structure is different from at least one of a corresponding grating period or a corresponding slant angle of a second in-coupling grating structure. The grating structures also include a plurality of out-coupling grating structures configured to couple the lights out of the optical waveguide.

Complex diffraction device

A complex diffraction device, which is excellent in designability, easy in setting the diffraction angle, adaptable to size increase, and easy to handle by adding a diffraction function resulting from an uneven pattern to the diffraction device comprising a liquid crystalline layer where the helical orientation of the smectic liquid crystal phase having a helical structure is maintained.

Beam expansion with three-dimensional diffractive elements

The specification and drawings present a new apparatus and method for using a three-dimensional (3D) diffractive element (e.g., a 3D diffractive grating) for expanding in one or two dimensions the exit pupil of an optical beam in electronic devices. Various embodiments of the present invention can be applied, but are not limited, to forming images in virtual reality displays, to illuminating of displays (e.g., backlight illumination in liquid crystal displays) or keyboards, etc.

Compact holograhic human-machine interface

A method of recording an object image of a first hologram as a second hologram is provided. A first hologram is recorded at a first angle of reconstruction and a holographic recording medium is provided. An object beam is directed through the first hologram at the first angle of reconstruction to reconstruct the object image on the recording medium. The recording medium is struck with a reference beam at a second angle of reconstruction to form a wave interference pattern with the object beam. The second angle of reconstruction is between 45 and 90 degrees. The wave interference pattern is recorded. A switch is provided that includes a hologram that has an angle of reconstruction between 45 and 90 degrees. A reproducing light source is positioned to direct light through the hologram at the angle of reconstruction to form a holographic image at a predetermined distance from the hologram. The switch includes a detector that detects the presence of an object proximate to the holographic image. The axis of the detector beam source is not perpendicular to the plane of the medium to which its hologram is affixed.

Beam expansion with three-dimensional diffractive elements

The specification and drawings present a new apparatus and method for using a three-dimensional (3D) diffractive element (e.g., a 3D diffractive grating) for expanding in one or two dimensions the exit pupil of an optical beam in electronic devices. Various embodiments of the present invention can be applied, but are not limited, to forming images in virtual reality displays, to illuminating of displays (e.g., backlight illumination in liquid crystal displays) or keyboards, etc.

Methods and apparatus for compensating image distortion and illumination nonuniform ity in a waveguide

Typical waveguides rely on total internal reflection between the outer surfaces of substrates, which can make them highly susceptible to beam misalignment caused by nonplanarity of the substrates. In the manufacturing of the glass sheets commonly used for substrates, ripples can occur during the stretching and drawing of glass as it emerges from a furnace. Although glass manufacturers try to minimize ripples using predictions from mathematical models, it is difficult to totally eradicate the problem from the glass manufacturing process. Typically, these beam misalignments manifest themselves as image distortions and non-uniformities in the output illumination from the waveguide. Many embodiments of the invention are directed toward optically efficient, low cost solutions to the problem of controlling output image quality in waveguides manufactured using commercially available substrate glass and to the problem of compensating the image distortions and non-uniformity of curved waveguides.

Methods and apparatuses for providing a waveguide display with angularly varying optical power

Systems and methods for waveguide displays with angularly varying optical power in accordance with various embodiments of the invention are illustrated. One embodiment includes a waveguide display including a source of image modulated light projected over a field of view, and a waveguide including at least one output grating with an optical prescription providing angularly varying optical power for focusing the field of view onto an external surface. In another embodiment, the at least one output grating includes at least one grating prescription providing a first focal length for focusing a first FOV portion onto a first area of the surface and a second focal length for focusing a second FOV portion onto a second area of the surface. In still another embodiment, the at least one output grating includes at least one grating prescription providing a continuously varying focal length across at least a portion of the FOV.

具有光合路器的近眼显示系统

提供了一种光波导。光波导包括基底结构(420)和布置在基底结构(420)处的多个光栅结构(421‑1、521‑1、521‑2、521‑3、421‑n)。光栅结构包括被配置成将多个光耦合到光波导中的多个向内耦合光栅结构(421‑1…421‑n)。第一向内耦合光栅结构(421‑1)的光栅周期或倾斜角中的至少一者不同于第二向内耦合光栅结构(421‑2)的相对应的光栅周期或相对应的倾斜角中的至少一者。光栅结构还包括被配置为将光耦合出光波导的多个向外耦合光栅结构(521‑1、521‑2、521‑3)。

Evacuated periotic structures and methods of manufacturing

Improvements to gratings for use in waveguides and methods of producing them are described herein. Deep surface relief gratings (SRGs) may offer many advantages over conventional SRGs, an important one being a higher S-diffraction efficiency. In one embodiment, deep SRGs can be implemented as polymer surface relief gratings or evacuated periodic structures (EPSs). EPSs can be formed by first recording a holographic polymer dispersed liquid crystal (HPDLC) periodic structure. Removing the liquid crystal from the cured periodic structure provides a polymer surface relief grating. Polymer surface relief gratings have many applications including for use in waveguide-based displays.

一种全息闪耀光栅制作方法

本发明是一种全息闪耀光栅的制作方法，通过先在基片上制作同质光栅，以该同质光栅为掩模，进行斜向离子束刻蚀得到所需的闪耀光栅。由于在制作同质光栅时，可以控制正向离子束刻蚀的时间，使同质光栅的槽深得到精确控制，另外在干涉光刻得到光刻胶光栅之后，可以进一步增加灰化工艺，控制光刻胶光栅的占宽比，从而控制所需的同质光栅的占宽比，因此本发明的制作方法实现了制作闪耀光栅的多参数控制，提高了制作精度。

Optical diffraction biosensor

The present invention provides an inexpensive and sensitive device and method for detecting and quantifying analytes present in a medium. The device comprises a metalized film upon which is printed a specific, predetermined pattern of analyte-specific receptors. Upon attachment of a target analyte to select areas of the plastic film upon which the receptor is printed, diffraction of transmitted and/or reflected light occurs via the physical dimensions and defined, precise placement of the analyte. A diffraction image is produced which can be easily seen with the eye or, optionally, with a sensing device.

Arrays of microlenses and arrays of microimages on transparent security substrates

A security device comprises a substrate (1) having an array of microlenses (3) on one side and one or more corresponding arrays of microimages (4) on the other side. The microimages (4) are located at a distance from the microlenses (3) substantially equal to the focal length of the microlenses. The substrate (1) is sufficiently transparent to enable light to pass through the microlenses (3) so as to reach the microimages (4). Each microimage (4) is defined by an anti-reflection structure (23, 45) on the substrate (1) formed by a periodic array of identical structural elements, light passing through the substrate and impinging on the microimages being reflected to a different extent than light which does not impinge on the microimages thereby rendering the microimages visible.

Devices and methods employing optical-based machine learning using diffractive deep neural networks

An all-optical Diffractive Deep Neural Network (D2NN) architecture learns to implement various functions or tasks after deep learning-based design of the passive diffractive or reflective substrate layers that work collectively to perform the desired function or task. This architecture was successfully confirmed experimentally by creating 3D-printed D2NNs that learned to implement handwritten classifications and lens function at the terahertz spectrum. This all-optical deep learning framework can perform, at the speed of light, various complex functions and tasks that computer-based neural networks can implement, and will find applications in all-optical image analysis, feature detection and object classification, also enabling new camera designs and optical components that can learn to perform unique tasks using D2NNs. In alternative embodiments, the all-optical D2NN is used as a front-end in conjunction with a trained, digital neural network back-end.

外装部品およびその製造方法ならびに電子機器

構造周期が一定の三角溝配列構造５３の上に、屈折率Ｎの保護層５４によって覆われた第１構造色領域５１と、空気層５５に直接さらされた第２構造色領域５２が形成されており、保護層５４の影響による発色特性の違いによって、第２構造色領域５２の模様や文字がコントラストを付けて浮き上がって見える。

Exterior component, manufacturing method thereof, and electronic equipment

On a triangular groove array structure 53 with a constant structure period, first structural color regions 51 and a second structural color region 52 are formed. The first structural color regions 51 are covered with a protective layer 54 having a refractive index N and the second structural color region 52 is directly exposed to an air layer 55. Variations in color development characteristics owing to the influence of the protective layer 54 can bring the pattern and character of the second structural color region 52 into relief with a contrast.

外装零部件及其制造方法、以及电子设备

本发明提供一种外装零部件及其制造方法、以及电子设备。在结构周期一定的三角槽排列结构(53)上，形成有被折射率为N的保护层(54)覆盖的第一结构色区域(51)、和与空气层(55)直接接触的第二结构色区域(52)，因保护层(54)的影响而导致发色特性不同，从而能够形成反差，使第二结构色区域(52)的图样、文字浮起而显现。

Exterior parts and method of manufacturing the same and electronic equipment using the same

On a triangular groove array structure 53 with a constant structure period, first structural color regions 51 and a second structural color region 52 are formed. The first structural color regions 51 are covered with a protective layer 54 having a refractive index N and the second structural color region 52 is directly exposed to an air layer 55. Variations in color development characteristics owing to the influence of the protective layer 54 can bring the pattern and character of the second structural color region 52 into relief with a contrast.

Exterior parts, manufacturing method thereof, and electronic equipment

Method of fabricating surface relief holograms

A method of manufacturing surface relief holograms wherein an original surface relief hologram in the form of an endless loop or a drum is continuously coated with a radiation-curable resin. After curing, the resin bears a replica of the original hologram and it is continuously drawn off from the original as a sheet or film. The replica film becomes a hot-stamping foil when formed in contact with a carrier film, metallized, and coated with a hot-stamping adhesive.

改进的包含ovd的装置

改进的包含OVD的装置。涉及一种全息叠片，包括：具有第一侧和第二侧的聚碳酸酯基片，铸造在所述聚碳酸酯基片的第一侧上的衍射结构，以及涂敷在所述衍射结构的至少一部分上的反射增强涂层；其中所述聚碳酸酯基片的第二侧提供所述叠片的基本平坦的外表面，其能够在有热和压力而没有粘接剂的情况下熔合到相容表面。可选择地，该叠片被激光雕刻以便在金属涂层中形成烧蚀空隙并碳化所述烧蚀空隙下面的可激光雕刻的聚碳酸酯。根据本发明的另一方面，利用激光将全息图上的金属涂层制成基本透明以形成全息图的透明部分。可选择地，在以与下面的信息相互对准的方式将全息图施加到诸如卡，证件等物件之后完成该制作，以确保信息的可见性和全息图的连续性。

Holographic films

A multilayer holographic film including a core layer and a hologram-receiving layer having a lower melting point than said core layer on at least one side of the core layer for including an embossed, holographic image therein and being adapted to receive a metal layer thereon, said hologram-receiving layer(s) include(s) a butene-propylene random copolymer having a melting point in the range of between about 125° C. and about 145° C. and blends thereof; a metallocene catalyzed, isotactic C2/C3 random copolymer with a C2 content of at least about 2% having a melting point in the range of between about 120° C. and about 140° C. and blends thereof or a high density polyethylene homopolymer having a melting point in the range of between about 120° C. and about 130° C. and blends thereof.

Holographic films

A multilayer holographic film including a core layer and a hologram-receiving layer having a lower melting point than said core layer on at least one side of the core layer for including an embossed, holographic image therein and being adapted to receive a metal layer thereon, said hologram-receiving layer(s) include(s) a butene-propylene random copolymer having a melting point in the range of between about 125° C. and about 145° C. and blends thereof; a metallocene catalyzed, isotactic C2/C3 random copolymer with a C2 content of at least about 2% having a melting point in the range of between about 120° C. and about 140° C. and blends thereof or a high density polyethylene homopolymer having a melting point in the range of between about 120° C. and about 130° C. and blends thereof.

由具有不同取向的纳米梁的超表面形成的衍射光栅

超表面提供头戴式显示器系统中的紧凑光学元件，以例如将光耦入或将光耦出波导。所述超表面可以由多个重复晶胞形成，每个晶胞包括在交叉方向上伸长的两组或两组以上纳米梁：在第一方向上伸长的一个或多个第一纳米梁和在第二方向上伸长的多个第二纳米梁。如在自顶而下视图中看到，所述第一方向可以沿着y轴，并且所述第二方向可以沿着x轴。所述晶胞可以具有10nm至1μm的范围内的周期性，包括10nm至500n或300nm至500nm。有利地，所述超表面提供在宽入射角范围上和对于具有圆偏振的入射光具有高衍射角和高衍射效率的光的衍射。

Hologram pattern forming method, method for manufacturing film having hologram pattern, laminate film and container

본 발명은 모형에 드는 비용을 억제하면서 홀로그램 패턴을 형성하기 위한 제조 비용을 저감시킬 수 있는 홀로그램 패턴 형성 방법 및 홀로그램 패턴이 구비된 필름 제조 방법을 제공하는 것이다. 기재 상에 자기 경화형 재료를 도포하는 도포 공정과, 수지제 모형에 형성된 요철 형상의 홀로그램 패턴 상에, 도포 공정에서 기재 상에 도포된 경화 전의 자기 경화형 재료를 중첩하는 중첩 공정과, 중첩 공정에 있어서 홀로그램 패턴이 전사된 자기 경화형 재료와, 수지제 모형을 박리하는 박리 공정을 구비한다. The present invention provides a holographic pattern forming method capable of reducing manufacturing costs for forming a holographic pattern while suppressing the cost of a model, and a method of manufacturing a film provided with the holographic pattern. A superimposing step of superimposing a self-curing type material before curing applied on a substrate in a coating step on a concavo-convex hologram pattern formed on a resin model, and a superimposing step of superimposing a self- A self-curing type material onto which the hologram pattern is transferred, and a peeling step of peeling the resin mold. 홀로그램 패턴, 자기 경화형 재료, 수지제 모형, 기재, 표면 보호층 A holographic pattern, a magnetic hardening material, a resin model, a substrate, a surface protective layer

安全装置

一种安全装置，包括响应入射辐射重放在视区可见的全息图的表面凹凸的微结构，该全息图在与微结构表面隔开的图像面中至少包括第一全息图像元素(50，52)。该装置在与第一全息元素(50，52)的所述图像面隔开的面中表现出至少一个另外的图像(54)。第一全息元素图像面与另外的图像面之间的间隔使得在倾斜装置时，第一全息图像元素(50，52)相对于另外的图像(54)表现出明显的移动，移动速率为倾斜每弧度至少6毫米，其中当以弧度表达时，每弧度的所述视差移动速率等于所述平面之间的间隔，并且移动速率和视区包括的角度的乘积定义了沿第一全息图像元素移动方向该装置尺寸的至少20％的距离。

In security elements

본 발명은 은행권, 수표등과 같은 보안 제품용 보안 요소에 관한 것이다. 본 발명은 또한 보안 재료와 함께 사용되는 보안 요소(11)를 포함하는데, 상기 요소는 한면에 하나 이상의 광학 가변 무늬 (optically variable device) (15)가 넣어지고 다른 면에 인증 (indicia) (16)이 새겨진 제1층, 및 상기 인증 상에 도포된 열변색성 피복물 (17)을 포함하고, 상기 열변색성 피복물 (17)이 열변색성 물질을 포함하는데, 상기 열변색성 물질은 열변색성 피복물 (17)의 온도가 활성화 온도 아래에서는 착색되고 이 색이 실질적으로 인증을 흐리게 하여 상기 광학 가변 무늬 (15)의 가시성을 증대시키고, 활성화 온도 이상에서는 무색이 됨으로써 인증을 드러내어 광학 가변 무늬가 반사광에서 실질적으로 보이지 않게 한다. The present invention relates to security elements for security products such as bank notes, checks and the like. The invention also includes a security element 11 for use with a security material, The element comprises a first layer engraved with one or more optically variable devices 15 on one side and engraved with indicia 16 on the other side, and a thermochromic coating applied on the certification 17. ), The thermochromic coating 17 comprises a thermochromic material, wherein the thermochromic material is colored such that the temperature of the thermochromic coating 17 is below the activation temperature and the color substantially dims authentication. The visibility of the variable fringe 15 is increased and becomes colorless above the activation temperature, thereby revealing authentication so that the optically variable fringe is substantially invisible in the reflected light.

Protective element and method of its manufacturing

FIELD: printing industry. SUBSTANCE: invention relates to a protective element for protection of precious objects, to the method for manufacturing of such protective element and also to counterfeit-proof paper and an information medium with such protective element. The protective element comprises the following components arranged above each other - a thin film element with colour variation effect and a relief structure made in a stamped varnish layer. Some sections of the stamped varnish layer with the relief structure are metallised. On the relief structure of the partially metallised stamped varnish layer there is a levelling transparent varnish layer, the refraction index of which substantially corresponds to the refraction index of the stamped varnish layer. EFFECT: proposed protective element provides for high extent of counterfeit protection. 34 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 483 934 (13) C2 (51) МПК B42D 15/10 (2006.01) B32B 3/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010139972/12, 17.02.2009 (24) Дата начала отсчета срока действия патента: 17.02.2009 (73) Патентообладатель(и): ГИЗЕКЕ УНД ДЕВРИЕНТ ГМБХ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 07.03.2008 DE 102008013167.9 (72) Автор(ы): ХАЙМ Манфред (DE) (43) Дата публикации заявки: 20.04.2012 Бюл. № 11 2 4 8 3 9 3 4 (45) Опубликовано: 10.06.2013 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: DE 102006015023 A1, 04.10.2007. RU 2149763 C1, 27.05.2000. WO 2005038136 A1, 28.04.2005. DE 102004051919 A1, 27.06.2006. 2 4 8 3 9 3 4 R U (86) Заявка PCT: EP 2009/001094 (17.02.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 07.10.2010 (87) Публикация заявки РСТ: WO 2009/109291 (11.09.2009) Адрес для переписки: 191002, Санкт-Петербург, а/я 5, ООО "Ляпунов и партнеры" (54) ЗАЩИТНЫЙ ЭЛЕМЕНТ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ (57) Реферат: Изобретение относится к защитному ...

Holographic data storage

A holographic data storage medium includes a polymer film which is set up as a storage layer and whose surface structure can be changed locally by heating. The polymer film is set up for the storage of holographic information via the local surface structure of the polymer film. A reflective layer can be provided on the data storage medium.

Use of a packing tape as a holographic data carrier

The invention relates to a packing strip (3) comprising a polymer film and used as a holographic data carrier. To this end, the packing strip (3) is designed to store holographic information. Holographic information can be entered into the packing strip (3) by means of a writing device (4), both before an object (1) is packed using the packing strip (3), and after.

Holographic data storage

Bei einem holographischen Datenspeicher (1'), der eine als Speicherschicht dienende Polymerfolie (2) aufweist, die lokal durch Erwärmung veränderbar ist, ist die Polymerfolie (2) als Decklage des Datenspeichers (1') eingerichtet. Unterhalb der Polymerfolie (2) ist eine Absorberschicht (4) angeordnet, die einen Absorberfarbstoff aufweist. Der Absorberfarbstoff ist dazu eingerichtet, einen zum Eingeben von Information dienenden Schreibstrahl zumindest teilweise zu absorbieren und die dabei erzeugte Wärme zumindest teilweise lokal an die Polymerfolie (2) abzugeben. Bei vorteilhaften Ausgestaltungen des Datenspeichers (1') befinden sich unterhalb der Absorberschicht (4) eine Klebstoffschicht (6) und zwischen der Polymerfolie (2) und der Absorberschicht (4) eine teildurchlässige Reflexionsschicht (8). In the case of a holographic data store (1 ') which has a polymer film (2) which serves as a storage layer and which can be changed locally by heating, the polymer film (2) is set up as the top layer of the data store (1'). An absorber layer (4), which has an absorber dye, is arranged below the polymer film (2). The absorber dye is designed to at least partially absorb a write beam used to enter information and to at least partially emit the heat generated thereby locally to the polymer film (2). In advantageous configurations of the data memory (1 ') there is an adhesive layer (6) below the absorber layer (4) and a partially transparent reflection layer (8) between the polymer film (2) and the absorber layer (4).