公开(公告)号：US20240319671A1

公开(公告)日：2024-09-26

申请号：US18585519

申请日：2024-02-23

申请人： Envisics Ltd

发明人： Rory Cooney ,  Ian Bledowski ,  Antariksh Saxena

IPC分类号： G03H1/22 ,  G09G3/00

CPC分类号： G03H1/2294 ,  G03H1/2202 ,  G09G3/003 ,  G03H2001/2231 ,  G03H2225/32 ,  G03H2225/52 ,  G03H2250/38

摘要： There is provided a driver for a spatial light modulator comprising a plurality of pixels. The driver is configured to receive a hologram of a picture and drive the spatial light modulator to display the hologram on a group of pixels of the plurality of pixels. The driver is further configured to apply a series of phase offsets to the spatial light modulator displaying the hologram, wherein each phase offset of the series of phase offsets is applied to each pixel of the group of pixels for a respective predetermined period of time.

公开(公告)号：US08976449B2

公开(公告)日：2015-03-10

申请号：US13518414

申请日：2010-11-08

申请人： Tohru Ida

发明人： Tohru Ida

IPC分类号： G03H1/00 ,  G02B5/30 ,  G02B27/28 ,  G06K9/74 ,  B42D25/29 ,  G03H1/02 ,  B42D25/328 ,  B42D25/391

CPC分类号： B42D25/364 ,  B42D25/29 ,  B42D25/328 ,  B42D25/373 ,  B42D25/391 ,  G02B5/3016 ,  G03H1/0244 ,  G03H1/0256 ,  G03H2250/14 ,  G03H2250/36 ,  G03H2250/38

摘要： An identification medium, in which a pattern is clearly altered in observation through a right-handed circularly polarizing filter and observation through a left-handed circularly polarizing filter, is provided. The identification medium is formed by laminating a cholesteric liquid crystal layer, a λ/4 plate, and a linearly polarizing filter layer, in that order, from an observing side. The cholesteric liquid crystal layer is formed with a hologram and selectively reflects light. In an observation through a circularly polarizing filter that transmits the light reflected at the cholesteric liquid crystal layer, light reflected at a pattern printed layer is not perceived due to the function of a circularly polarizing layer. Images are clearly altered by switching a right-handed and a left-handed circularly polarizing filter.

摘要翻译： 提供了一种识别介质，其中通过右旋圆偏振滤光器在观察中清楚地改变图案并通过左旋圆偏振滤光器观察。 通过从观察侧依次层叠胆甾醇型液晶层，λ/ 4板和线偏振滤光层，形成识别介质。 胆甾型液晶层由全息图形成，并选择性地反射光。 在通过透射在胆甾型液晶层反射的光的圆偏振滤光片的观察中，由于圆偏振层的功能，不能感觉到在图案印刷层反射的光。 通过切换右手和左旋圆偏振滤镜可以明显改变图像。

公开(公告)号：US08970953B2

公开(公告)日：2015-03-03

申请号：US13509916

申请日：2010-11-12

申请人： Hidekazu Hoshino ,  Itsuo Takeuchi ,  Tokio Sakauchi ,  Seiya Shibuya ,  Tohru Ida

发明人： Hidekazu Hoshino ,  Itsuo Takeuchi ,  Tokio Sakauchi ,  Seiya Shibuya ,  Tohru Ida

IPC分类号： G03H1/00 ,  G02B5/30 ,  G02B27/28 ,  G06K9/74 ,  G03H1/02 ,  B42D25/29 ,  B42D25/328 ,  B42D25/391

CPC分类号： B42D25/364 ,  B42D25/29 ,  B42D25/328 ,  B42D25/391 ,  B42D2033/10 ,  B42D2033/26 ,  B42D2035/24 ,  G02B5/3016 ,  G03H1/0244 ,  G03H1/0256 ,  G03H2250/14 ,  G03H2250/36 ,  G03H2250/38

摘要： An identification medium is provided in which latent image having plural colors can be observed even when the identification medium is spaced away from a polarization filter. A cholesteric liquid crystal layer is provided as a specific polarization light reflection layer which reflects light having a specific polarized condition. An optical anisotropic layer having an optical anisotropy is provided at an upper position overlapping with the specific polarization light reflection layer. An image A fanned by an area having an optical anisotropy different from that of surroundings is formed at the optical anisotropic layer. When the identification medium is directly viewed, the influence of the optical anisotropy cannot be seen. When the identification medium is observed via a circular polarization filter, the image can be seen to have a specific color by the influence of the optical anisotropy.

摘要翻译： 提供了一种识别介质，其中即使当识别介质与偏振滤光器隔离时，也可以观察到具有多种颜色的潜像。 提供胆甾型液晶层作为反射具有特定偏振条件的光的特定偏振光反射层。 具有光学各向异性的光学各向异性层设置在与特定偏振光反射层重叠的上部位置。 在光学各向异性层处形成由具有与周围环境不同的光学各向异性的区域扇形的图像A. 当直接观察识别介质时，不能看到光学各向异性的影响。 当通过圆偏振滤光器观察识别介质时，可以通过光学各向异性的影响看到图像具有特定的颜色。

公开(公告)号：US08322753B2

公开(公告)日：2012-12-04

申请号：US12312653

申请日：2007-10-18

申请人： Hidekazu Hoshino ,  Itsuo Takeuchi ,  Tokio Sakauchi ,  Suzushi Nishimura ,  Gorou Suzaki

发明人： Hidekazu Hoshino ,  Itsuo Takeuchi ,  Tokio Sakauchi ,  Suzushi Nishimura ,  Gorou Suzaki

IPC分类号： B42D15/00

CPC分类号： B42D25/364 ,  B42D25/29 ,  B42D25/328 ,  B42D25/36 ,  B42D25/391 ,  B42D2033/26 ,  G02B5/3016 ,  G03H1/0011 ,  G03H1/02 ,  G03H1/0244 ,  G03H1/0256 ,  G03H2250/10 ,  G03H2250/33 ,  G03H2250/34 ,  G03H2250/36 ,  G03H2250/38 ,  G03H2250/40 ,  G03H2250/41

摘要： An identification medium is to be observed via a linearly polarizing filter and includes a first liquid crystal layer that changes the wavelength of light according to the rotational angle of the linearly polarizing filter, a cholesteric liquid crystal layer, and a light absorbing layer that is provided below the cholesteric liquid crystal layer.

摘要翻译： 通过线性偏振滤光器观察识别介质，并且包括根据线性偏振滤光器的旋转角，胆甾型液晶层和光吸收层改变光的波长的第一液晶层 在胆甾型液晶层之下。

公开(公告)号：US07940340B2

公开(公告)日：2011-05-10

申请号：US11994571

申请日：2006-07-04

申请人： Klaus Ludwig ,  Wolfgang Clemens

发明人： Klaus Ludwig ,  Wolfgang Clemens

IPC分类号： G02F1/13 ,  G02F1/03 ,  G02B5/18

CPC分类号： G03H1/0256 ,  B42D25/29 ,  B42D25/328 ,  B42D25/364 ,  B42D2033/26 ,  B42D2033/46 ,  G02F1/0147 ,  G03H1/0011 ,  G03H1/0244 ,  G03H2250/38 ,  G03H2260/12

摘要： A multilayer body (1) having an optically active first layer system (10) is described, in which case the first layer system (10) is an optically variable device (OVD), and the optical effect of the first layer system (10) can be influenced by an electrically controllable second layer system (20).

摘要翻译： 描述具有光学活性第一层系统（10）的多层体（1），在这种情况下，第一层系统（10）是光学可变装置（OVD），并且第一层系统（10）的光学效应， 可以受到电可控的第二层系统（20）的影响。

公开(公告)号：US20110027494A1

公开(公告)日：2011-02-03

申请号：US12852105

申请日：2010-08-06

申请人： Kim Leong TAN ,  David M. Shemo

发明人： Kim Leong TAN ,  David M. Shemo

IPC分类号： C08F2/48

CPC分类号： G02B5/3016 ,  B29D11/0074 ,  G02B5/1871 ,  G02B5/32 ,  G02F1/13342 ,  G02F1/133753 ,  G02F2203/07 ,  G03H1/22 ,  G03H2001/2276 ,  G03H2240/11 ,  G03H2240/23 ,  G03H2250/38 ,  G11B7/1353 ,  G11B7/13925 ,  G11B2007/0006

摘要： A method of fabricating an optical element including a liquid crystal layer having a spatially-varying tilt angle includes coating a substrate with a linearly photopolymerizable polymer layer, irradiating the linearly photopolymerizable polymer layer with linearly polarized ultra-violet light at a oblique angle, and coating a layer of liquid crystal material on a surface of the irradiated linearly photopolymerizable polymer layer. The liquid crystal material has a predetermined relationship between its tilt angle and a total dose of the linearly polarized ultra-violet light. The linearly photopolymerizable polymer layer is irradiated with at least one dose of linearly polarized ultra-violet light that is sufficient to induce formation of a plurality of discrete regions within the liquid crystal layer having a larger in-plane birefringence than an adjacent or surrounding region.

摘要翻译： 制造包括具有空间变化倾斜角的液晶层的光学元件的方法包括用线性可光聚合的聚合物层涂覆基板，以线性偏振的紫外线以倾斜的角度照射线性可光聚合的聚合物层， 在被照射线性可光聚合聚合物层的表面上的一层液晶材料。 液晶材料的倾斜角与线偏振紫外光的总剂量之间具有预定的关系。 线性可光聚合聚合物层被照射至少一种线性偏振紫外光，其量足以引起在相邻或周围区域内具有较大面内双折射的液晶层内形成多个离散区域。

公开(公告)号：US07879415B2

公开(公告)日：2011-02-01

申请号：US11664162

申请日：2005-09-30

申请人： Hidekazu Hoshino ,  Hiroyuki Matsumoto ,  Itsuo Takeuchi

发明人： Hidekazu Hoshino ,  Hiroyuki Matsumoto ,  Itsuo Takeuchi

IPC分类号： B44F1/10

CPC分类号： B42D25/364 ,  B32B2307/40 ,  B32B2307/42 ,  B32B2551/00 ,  B42D25/328 ,  B42D2033/26 ,  B42D2035/24 ,  G02B5/287 ,  G02B5/3016 ,  G02F1/13 ,  G02F1/17 ,  G03H1/0011 ,  G03H1/0256 ,  G03H2001/2615 ,  G03H2250/14 ,  G03H2250/33 ,  G03H2250/38 ,  G03H2250/40 ,  G03H2250/41

摘要： A thermosensitive ink layer 102 is composed of a thermochromic material which changes from black to a transparent state and is formed on a substrate 101 made from a PET film by heating. A cholesteric liquid crystal layer 103 on which a hologram 105 of an appropriate form is formed on the cholesteric liquid crystal layer is mounted thereon. At ordinary temperature, the thermosensitive ink layer 102 exhibits a property of light absorption and a property of selective reflection and a color shifting of the cholesteric liquid crystal layer 103 are observed. The thermosensitive ink layer 102 becomes transparent by heating and the figure 104 on the substrate 101 is also visible. The determination of the authenticity thereof is performed by utilizing the change of view. Therefore, the anticounterfeiting effects are superior to those of the discrimination techniques using conventional techniques, and this enables articles to be distinguished easily and reliably.

摘要翻译： 热敏油墨层102由从黑色变为透明状态的热变色材料构成，并且通过加热形成在由PET膜制成的基板101上。 在胆甾型液晶层上形成有适当形式的全息图105的胆甾型液晶层103。 在常温下，热敏油墨层102表现出光吸收的性质，并且观察到胆甾醇型液晶层103的选择反射和颜色偏移的性质。 热敏油墨层102通过加热变得透明，并且衬底101上的图104也是可见的。 通过利用视图的改变来确定其真实性。 因此，防伪效果优于使用常规技术的辨别技术的效果，这使得能够容易且可靠地区分物品。

公开(公告)号：US07818782B2

公开(公告)日：2010-10-19

申请号：US10599984

申请日：2005-04-11

申请人： Tae Saito

发明人： Tae Saito

IPC分类号： H04L9/32 ,  G09C3/00 ,  G06F7/04

CPC分类号： B42D25/328 ,  B42D25/364 ,  B42D25/391 ,  B42D2033/26 ,  B42D2035/24 ,  B42D2035/36 ,  G02B5/3016 ,  G03H1/0011 ,  G03H2250/38 ,  G03H2250/41 ,  G09F3/0292

摘要： The invention relates to an authentication medium capable of eliminating problems with the formation of an authentication portion with and embossed hologram, for instance, difficulty with which fabrication time is cut down, and difficulty with which an authentication pattern is changed due to an increased step counts at the time of embossing mold fabrication. A thin-film layer (2) made up of a material that changes in transmittance of reflectance upon heating, an orientation film (4) that is provided if necessary, and a color change layer (3) such a light selective reflecting layer comprising a cholesteric liquid crystal layer are stacked on a substrate (12). By means of a thermal head or the like, recording is applied to the thin-film layer (2), and changes in the hue of the light selective reflecting layer (3) at a recorded site or the presence or absence of reflection or hues upon observation by way of a circular polarization sheet are observed, thereby solving the above problems.

摘要翻译： 本发明涉及一种认证介质，其能够消除形成具有压印的全息图的认证部分的问题，例如，制造时间被削减的难度以及由于增加的步数而使认证模式发生变化的难度 在压花模制造时。 由加热时的反射率变化的材料构成的薄膜层（2），必要时设置的取向膜（4）和变色层（3）等的选择性反射层， 胆甾型液晶层层叠在基板（12）上。 通过热敏头等，将记录施加到薄膜层（2），并且在记录位置处改变光选择反射层（3）的色调，或者存在或不存在反射或色调 观察通过圆偏振片观察时，解决了上述问题。

公开(公告)号：US20100231997A1

公开(公告)日：2010-09-16

申请号：US12721161

申请日：2010-03-10

申请人： Adam K. Fontecchio ,  Kashma Rai

发明人： Adam K. Fontecchio ,  Kashma Rai

IPC分类号： G03H1/02 ,  G03H1/26

CPC分类号： G02F1/13342 ,  G02F1/13306 ,  G02F1/133504 ,  G02F1/133553 ,  G02F1/1347 ,  G02F1/29 ,  G02F1/292 ,  G02F2001/133565 ,  G02F2001/13478 ,  G02F2001/294 ,  G03H1/04 ,  G03H1/0402 ,  G03H1/28 ,  G03H2001/0439 ,  G03H2001/0491 ,  G03H2001/2263 ,  G03H2222/36 ,  G03H2250/38

摘要： Described herein is a new holographic polymer dispersed liquid crystal (HPDLC) medium with broadband reflective properties, and a new technique for fabrication of broadband HPDLC mediums. The new technique involves dynamic variation of the holography setup during HPDLC formation, enabling the broadening of the HPDLC medium's wavelength response. Dynamic variation of the holography setup may include the rotation and/or translation of one or more motorized stages, allowing for time and spatial, or angular, multiplexing through variation of the incident angles of one or more laser beams on a pre-polymer mixture during manufacture. An HPDLC medium manufactured using these techniques exhibits improved optical response by reflecting a broadband spectrum of wavelengths. A new broadband holographic polymer dispersed liquid crystal thin film polymeric mirror stack with electrically-switchable beam steering capability is disclosed.

摘要翻译： 本文描述了具有宽带反射特性的新型全息聚合物分散液晶（HPDLC）介质，以及用于制造宽带HPDLC介质的新技术。 新技术涉及HPDLC形成期间全息设置的动态变化，使得能够扩展HPDLC介质的波长响应。 全息设置的动态变化可以包括一个或多个电动级的旋转和/或平移，通过在预聚合物混合物上的一个或多个激光束的入射角的变化允许时间和空间或角度复用 制造。 使用这些技术制造的HPDLC介质通过反映波长的宽带光谱表现出改进的光学响应。 公开了一种具有电可切换光束转向能力的新型宽带全息聚合物分散液晶薄膜聚合物镜叠层。

公开(公告)号：US07605882B1

公开(公告)日：2009-10-20

申请号：US11591527

申请日：2006-11-02

申请人： Richard L. Sutherland ,  Stephen A. Siwecki ,  Vince P. Tondiglia

发明人： Richard L. Sutherland ,  Stephen A. Siwecki ,  Vince P. Tondiglia

IPC分类号： G02F1/1333 ,  G02B5/32

CPC分类号： G03H1/22 ,  G02B5/32 ,  G02F1/13342 ,  G03H2250/38

摘要： Described herein are the materials, mechanisms and procedures for optimizing various performance parameters of HPDLC optical devices in order to meet differing performance requirements. These optimization tailoring techniques include control and independent optimization of switchable HPDLC optical devices to meet the demanding requirements of anticipated applications for, inter alia, the telecommunications and display industries. These techniques include optimization of diffraction efficiency, i.e., index modulation, polarization dependence control, haze, cosmetic quality, control of response and relaxation time, voltage driving for on and off switching, and material uniformity. This control and independent optimization tailors properties of switchable HPDLC optical devices according to the specific requirements of the application of the switchable HPDLC optical device. The invention disclosed herein retains the desirable attributes of the multi-functional acrylate system for forming HPDLC optical devices, but adds new materials to the acrylate system and/or new process control to the recording to optimize performance parameters as may be needed for specific applications. This results in high optical quality switchable holograms with good diffraction efficiency and low, stable switching voltage.