公开(公告)号：US07158297B2

公开(公告)日：2007-01-02

申请号：US10942090

申请日：2004-09-16

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G03B21/56 ,  G03B21/60 ,  G03B5/30 ,  G03B21/00 ,  G03B17/00 ,  G02F1/335 ,  C09K19/02

CPC分类号： G02B5/0294 ,  G02B5/021 ,  G02B5/0236 ,  G02B5/0252 ,  G02B5/0257 ,  G02B5/3016 ,  G03B21/604

摘要： A projection screen includes a polarized-light selective reflection layer having a cholesteric liquid crystalline structure, capable of selectively diffuse-reflecting a specific polarized-light component; a substrate for supporting the polarized-light selective reflection layer; and an optical member provided on the observation side of the polarized-light selective reflection layer. The optical member diffuses imaging light which the polarized-light selective reflection layer diffuse-reflects, while maintaining the state of polarization of the imaging light. The optical member diffuses right-handed circularly polarized light that is projected on the projection screen, when the light travels from the observation side to the polarized-light selective reflection layer. The diffused light (31a1) enters the polarized-light selective reflection layer and is diffuse-reflected owing to the scattering property of the polarized-light selective reflection layer (the property of diffusing light that is selectively reflected, owing to structural non-uniformity in the cholesteric liquid crystalline structure containing a plurality of helical structure parts, the helical axes of which extend in different directions). The optical member further diffuses this diffused light (31a2) when the light travels from the polarized-light selective reflection layer toward the observation side. The thus diffused light (31a3) finally emerges toward the observation side.

摘要翻译： 投影屏幕包括具有胆甾型液晶结构的偏振光选择反射层，能够选择性地漫反射特定偏振光分量; 用于支撑偏振光选择反射层的基板; 以及设置在偏振光选择反射层的观察侧的光学构件。 在保持成像光的偏振状态的同时，光学部件漫射偏振光选择反射层漫反射的成像光。 当光从观察侧行进到偏振光选择反射层时，光学构件扩散投影在投影屏幕上的右旋圆偏振光。 扩散光（31a 1）由于偏振光选择反射层的散射特性而进入偏振光选择反射层并且被漫反射（由于结构非对称性而导致的选择性反射的漫射光的性质， 包含多个螺旋结构部件的胆甾型液晶结构的均匀性，其螺旋轴线在不同方向上延伸）。 当光从偏振光选择反射层行进到观察侧时，光学构件进一步扩散该扩散光（31a 2）。 这样散射的光（31a 3）最终朝向观察侧出现。

公开(公告)号：US07142360B2

公开(公告)日：2006-11-28

申请号：US10864876

申请日：2004-06-10

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G03B21/60 ,  G02B5/02 ,  G02F1/1335 ,  C09K19/02

CPC分类号： G03B21/60 ,  G02B5/3016 ,  G03B21/604

摘要： A projection screen capable of sharply displaying an image even under bright environmental light with high image visibility. A projection screen has a polarized-light selective reflection layer with a cholesteric liquid crystalline structure, capable of selectively reflecting a specific polarized light component, and a substrate for supporting the reflection layer. Of the light entering the reflection layer from the viewer's side, the right-handed light in the selective reflection wave range is reflected from the reflection layer as reflected light. As a result of structural non-uniformity in the cholesteric liquid crystalline structure, the light that is selectively reflected (reflected light) is diffused.

摘要翻译： 投影屏幕即使在明亮的环境光下也能够清晰地显示图像，具有高图像可视性。 投影屏幕具有能够选择性地反射特定偏振光分量的胆甾型液晶结构的偏振光选择反射层和用于支撑反射层的基板。 在从观察者侧进入反射层的光中，选择反射波段中的右手光作为反射光从反射层反射。 由于胆甾型液晶结构中的结构不均匀，被选择性反射的光（反射光）被扩散。

公开(公告)号：US07075598B2

公开(公告)日：2006-07-11

申请号：US10385491

申请日：2003-03-12

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G02F1/1335

CPC分类号： G02B5/3016

摘要： A circularly polarizing element is a laminate of n number of cholesteric liquid crystal layers that are laminated so that the helical axis in each liquid crystal layer extends in the direction of thickness, where liquid crystalline molecules in the cholesteric liquid crystal layers spiral in the same direction to form helixes. The cholesteric liquid crystal layers are wide-wave-range-covering liquid crystal layers adapted to selectively reflect circularly polarized light in wide wave ranges, and these selective reflection wave ranges overlap one another over a specified wide range. Each cholesteric liquid crystal layer is a single layer in which the helical pitch is varied in the direction of thickness so that the layer can selectively reflect circularly polarized light in a broadened wave range, and preferably covers a wave range of 200 nm or more. This circularly polarizing element is excellent in the alignment of liquid crystalline molecules and in optical properties, and has an easily and stably controlled reflectance/transmittance for circularly polarized light.

摘要翻译： 圆偏振元件是层叠有n个胆甾型液晶层的层叠体，使得各液晶层的螺旋轴在厚度方向上延伸，胆甾型液晶层中的液晶分子向相同方向螺旋 形成螺旋体。 胆甾型液晶层是适用于选择性地反射宽波段的圆偏振光的宽波段覆盖液晶层，这些选择反射波范围在规定的宽范围内彼此重叠。 每个胆甾型液晶层是螺旋间距在厚度方向上变化的单层，使得该层可以选择性地反射在更宽的波长范围内的圆偏振光，并且优选地覆盖200nm以上的波长范围。 该圆偏振元件在液晶分子的取向和光学性质方面优异，并且对于圆偏振光具有容易且稳定地控制的反射率/透射率。

公开(公告)号：US20050152031A1

公开(公告)日：2005-07-14

申请号：US10954351

申请日：2004-10-01

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G03B21/60

CPC分类号： G03B21/60

摘要： A projection screen for displaying an image by reflecting imaging light projected from a projector, including a substrate and a projected-image-receiving layer formed on the substrate. The projected-image-receiving layer has the function of selectively reflecting a specific polarized-light component and the function of diffusing the specific polarized-light component. Further, the projected-image-receiving layer includes two or more selective reflection layers having different reflection wave ranges, and, of these selective reflection layers, the selective reflection layer having a reflection wave range covering the shorter wavelength side is situated apart from the observation side as compared with the selective reflection layer having a reflection wave range covering the longer wavelength side.

摘要翻译： 一种用于通过反射从投影仪投影的成像光来显示图像的投影屏幕，包括形成在基板上的基板和投影图像接收层。 投影图像接收层具有选择性地反射特定偏振光分量和扩散特定偏振光分量的功能。 此外，投影图像接收层包括具有不同反射波段的两个或更多个选择反射层，并且在这些选择反射层中，具有覆盖较短波长侧的反射波范围的选择反射层与观察 与具有覆盖较长波长侧的反射波长范围的选择反射层相比。

公开(公告)号：US20050122582A1

公开(公告)日：2005-06-09

申请号：US10934767

申请日：2004-09-07

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G03B21/56 ,  G03B21/60

CPC分类号： G03B21/604 ,  G03B21/567

摘要： A projection screen including a polarized-light selective reflection layer having a cholesteric liquid crystalline structure that causes selective diffuse-reflection of a specific polarized-light component, and a substrate for supporting the polarized-light selective reflection layer. The polarized-light selective reflection layer includes three partial selective reflection layers that are layered one over another, and each partial selective reflection layer has a cholesteric liquid crystalline structure that causes selective diffuse-reflection of a specific polarized-light component. Each partial selective reflection layer contains molecules of a liquid crystal made from an organic compound, and is formed as an organic film as a whole. In the polarized-light selective reflection layer, a partial selective reflection layer for selectively reflecting light in the blue (B) color wave range, a partial selective reflection layer for selectively reflecting light in the green (G) color wave range, and a partial selective reflection layer for selectively reflecting light in the red (R) color wave range are layered in this order, the firstly-mentioned partial selective reflection layer being on the observation side. Namely, the partial selective reflection layer for selectively reflecting light in the blue (B) color wave range is arranged as the outermost layer on the observation side.

摘要翻译： 包括具有引起特定偏振光成分的选择性扩散反射的胆甾型液晶结构的偏振光选择反射层的投影屏幕和用于支撑偏振光选择反射层的基板。 偏振光选择反射层包括层叠在一起的三个部分选择反射层，并且每个部分选择反射层具有导致特定偏振光分量的选择性漫反射的胆甾型液晶结构。 每个部分选择反射层含有由有机化合物制成的液晶分子，并且整体形成为有机膜。 在偏振光选择反射层中，选择性地反射蓝（B）色波范围的光的部分选择反射层，用于选择性地反射绿（G）色波范围的光的部分选择反射层， 选择性地反射红色（R）色波范围的光的选择反射层按顺序层叠，首先提到的部分选择反射层在观察侧。 也就是说，用于选择性地反射蓝（B）色波范围的光的部分选择反射层被布置为观察侧的最外层。

公开(公告)号：US20050063054A1

公开(公告)日：2005-03-24

申请号：US10942090

申请日：2004-09-16

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G02B5/02 ,  G02B5/30 ,  G03B21/56 ,  G03B21/60

CPC分类号： G02B5/0294 ,  G02B5/021 ,  G02B5/0236 ,  G02B5/0252 ,  G02B5/0257 ,  G02B5/3016 ,  G03B21/604

摘要： A projection screen includes a polarized-light selective reflection layer having a cholesteric liquid crystalline structure, capable of selectively diffuse-reflecting a specific polarized-light component; a substrate for supporting the polarized-light selective reflection layer; and an optical member provided on the observation side of the polarized-light selective reflection layer. The optical member diffuses imaging light which the polarized-light selective reflection layer diffuse-reflects, while maintaining the state of polarization of the imaging light. The optical member diffuses right-handed circularly polarized light that is projected on the projection screen, when the light travels from the observation side to the polarized-light selective reflection layer. The diffused light (31a1) enters the polarized-light selective reflection layer and is diffuse-reflected owing to the scattering property of the polarized-light selective reflection layer (the property of diffusing light that is selectively reflected, owing to structural non-uniformity in the cholesteric liquid crystalline structure containing a plurality of helical structure parts, the helical axes of which extend in different directions). The optical member further diffuses this diffused light (31a2) when the light travels from the polarized-light selective reflection layer toward the observation side. The thus diffused light (31a3) finally emerges toward the observation side.

摘要翻译： 投影屏幕包括具有胆甾型液晶结构的偏振光选择反射层，能够选择性地漫反射特定偏振光分量; 用于支撑偏振光选择反射层的基板; 以及设置在偏振光选择反射层的观察侧的光学构件。 在保持成像光的偏振状态的同时，光学部件漫射偏振光选择反射层漫反射的成像光。 当光从观察侧行进到偏振光选择反射层时，光学构件扩散投影在投影屏幕上的右旋圆偏振光。 扩散光（31a1）由于偏振光选择反射层的散射特性而进入偏振光选择反射层并且被漫反射（由于结构不均匀性而被选择性反射的漫射光的性质 该胆甾型液晶结构包含多个螺旋结构部件，其螺旋轴线在不同方向上延伸）。 当光从偏振光选择反射层向观察侧行进时，光学构件进一步扩散该漫射光（31a2）。 这样扩散的光（31a3）最终朝向观察侧出现。

公开(公告)号：US20050057804A1

公开(公告)日：2005-03-17

申请号：US10895262

申请日：2004-07-21

申请人： Masanori Umeya ,  Masahiro Hatano ,  Akira Izawa

发明人： Masanori Umeya ,  Masahiro Hatano ,  Akira Izawa

IPC分类号： G03B21/62 ,  G03B21/56

CPC分类号： G03B21/625

摘要： The present invention provides a projection screen capable of sharply displaying an image even under bright environmental light, of improving brightness distribution and viewing angle, and of providing high image visibility, and a projection system including such a projection screen. The projection screen includes: a polarized-light selective reflection layer that selectively reflects a specific polarized-light component; a substrate that supports the polarized-light selective reflection layer; and a circular Fresnel lens provided on the observation side of the polarized-light selective reflection layer. The circular Fresnel lens controls the optical axis of right-handed circularly polarized light projected on the projection screen so that the light enters the polarized-light selective reflection layer nearly vertically to it regardless of the point and angle at which the light is incident on this layer. The right-handed circularly polarized light incident on the polarized-light selective reflection layer is diffuse-reflected from this layer owing to the scattering properties (the property of diffusing light that is selectively reflected, owing to structural non-uniformity in a cholesteric liquid crystalline structure containing a plurality of helical structure parts whose helical axes extend in different directions) possessed by the polarized-light selective reflection layer, and the reflected light is returned, via the circular Fresnel lens, to a particular observation point at which a viewer makes observation.

摘要翻译： 本发明提供一种即使在明亮的环境光下即使在明亮的环境光下也可以锐利地显示图像，提高亮度分布和视角以及提供高图像可见度的投影屏幕，以及包括这种投影屏幕的投影系统。 投影屏幕包括：选择性地反射特定偏振光分量的偏振光选择反射层; 支撑偏振光选择反射层的基板; 以及设置在偏振光选择反射层的观察侧的圆形菲涅尔透镜。 圆形菲涅尔透镜控制投射在投影屏幕上的右旋圆偏振光的光轴，使得光线几乎垂直于其入射到偏振光选择反射层，而不管光入射到该点上的角度和角度如何 层。 入射到偏振光选择反射层上的右旋圆偏振光由于散射特性（由于胆甾醇型液晶中的结构不均匀性而被选择性反射的扩散光的性质而从该层扩散反射 由偏振光选择反射层所具有的包含螺旋轴在不同方向延伸的多个螺旋结构部件的结构的结构），反射光经由圆形菲涅耳透镜返回到观察者进行观察的特定观察点 。

公开(公告)号：US07719762B2

公开(公告)日：2010-05-18

申请号：US11333257

申请日：2006-01-18

申请人： Tomoko Kumasawa ,  Masanori Umeya ,  Masachika Watanabe ,  Tsuyoshi Yamauchi

发明人： Tomoko Kumasawa ,  Masanori Umeya ,  Masachika Watanabe ,  Tsuyoshi Yamauchi

IPC分类号： G03B21/56

CPC分类号： G03B21/604 ,  G03B21/62

摘要： The present invention provides a see-through transmitting-reflecting projection screen excellent in transparency, capable of sharply displaying, on its both sides, identical or different images even under bright environmental light.A transmitting-reflecting projection screen 10 comprises a reflection-type screen 11 and a transmission-type screen 12. The reflection-type screen 11 reflects a specific polarized component of imaging light projected. The reflection-type screen 11 does not reflect a polarized component, different from the specific polarized component, of the imaging light, and this polarized component passes through the reflection-type screen 11 and the transmission-type screen 12.

摘要翻译： 本发明提供了一种透明度优异的透视透射反射投影屏幕，即使在明亮的环境光下也能够在其两侧清晰地显示相同或不同的图像。 透射反射投影屏幕10包括反射型屏幕11和透射型屏幕12.反射型屏幕11反射投影的成像光的特定偏振分量。 反射型屏幕11不反射成像光的特定偏振分量的偏振分量，并且该偏振分量通过反射型屏幕11和透射型屏幕12。

公开(公告)号：US07365906B2

公开(公告)日：2008-04-29

申请号：US11529512

申请日：2006-09-29

申请人： Masanori Umeya

发明人： Masanori Umeya

IPC分类号： G03B21/60 ,  G02B5/02 ,  G02B5/30 ,  G02B27/28 ,  G02F1/1335 ,  C09K19/02

CPC分类号： G03B21/60 ,  G02B5/3016 ,  G03B21/604

摘要： A projection screen capable of sharply displaying an image even under bright environmental light with high image visibility. A projection screen has a polarized-light selective reflection layer with a cholesteric liquid crystalline structure, capable of selectively reflecting a specific polarized light component, and a substrate for supporting the reflection layer. Of the light entering the reflection layer from the viewer's side, the right-handed light in the selective reflection wave range is reflected from the reflection layer as reflected light. As a result of structural non-uniformity in the cholesteric liquid crystalline structure, the light that is selectively reflected (reflected light) is diffused.

摘要翻译： 投影屏幕即使在明亮的环境光下也能够清晰地显示图像，具有高图像可视性。 投影屏幕具有能够选择性地反射特定偏振光分量的胆甾型液晶结构的偏振光选择反射层和用于支撑反射层的基板。 在从观察者侧进入反射层的光中，选择反射波段中的右手光作为反射光从反射层反射。 由于胆甾型液晶结构中的结构不均匀，被选择性反射的光（反射光）被扩散。

公开(公告)号：US20070097299A1

公开(公告)日：2007-05-03

申请号：US11516589

申请日：2006-09-07

申请人： Masachika Watanabe ,  Masanori Umeya ,  Koji Eto ,  Tsuyoshi Yamauchi

发明人： Masachika Watanabe ,  Masanori Umeya ,  Koji Eto ,  Tsuyoshi Yamauchi

IPC分类号： G02F1/1335

CPC分类号： B42D25/47 ,  B42D25/328 ,  B42D25/364 ,  B42D25/455 ,  B42D2033/26 ,  G03H1/0248 ,  G03H1/0252 ,  G03H2250/10 ,  G03H2250/34 ,  G03H2250/38

摘要： The invention provides a process capable of fabricating a cholesteric liquid crystal medium having a volume hologram with efficiency yet without recourse to complicated steps such as an alignment step. This is achievable as follows. A volume hologram layer is formed on a substrate, and a cholesteric liquid crystal layer is then formed on another substrate. The volume hologram layer and the cholesteric liquid crystal layer are laminated together via a bonding layer. Further, a bonding for lamination onto an application member is formed on either the volume hologram layer side or the cholesteric liquid crystal layer side to obtain a cholesteric liquid crystal medium having a volume hologram.

摘要翻译： 本发明提供一种能够制造具有体积全息图的胆甾醇型液晶介质的方法，其效率尚未依赖于诸如对准步骤的复杂步骤。 这是可以实现的如下。 在基板上形成体积全息图层，然后在另一基板上形成胆甾醇型液晶层。 体积全息图层和胆甾醇型液晶层通过接合层层叠在一起。 此外，在体积全息图层侧或胆甾型液晶层侧上形成用于层压到涂布部件上的粘接，以获得具有体积全息图的胆甾型液晶介质。