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41. 发明授权

US5583669A Light valve apparatus, and projection display system and view-finder system employing said light valve apparatus 失效
标题翻译：光阀装置，投影显示系统和采用所述光阀装置的取景器系统
公开(公告)号：US5583669A
公开(公告)日：1996-12-10
申请号：US425468
申请日：1995-04-20
申请人： Yoshimasa Fushimi , Yoshito Miyatake
发明人： Yoshimasa Fushimi , Yoshito Miyatake
IPC分类号： G02F1/1335
CPC分类号： G02F1/133526
摘要： A light valve apparatus in which a first lens array, a second lens array, and a light valve are arranged sequentially from an incident light side, and a focal length of each of microlens elements for the first lens array is set to be shorter than a focal length of each of microlens elements for the second lens array, and the respective microlens elements of the second lens array are adapted to form real image corresponding to an imaginary object on a focal point of the respective microlens elements of the first lens array, on corresponding pixels of the light valve. By the first lens array, a plurality of very small light source images corresponding to the light source are formed, and light emitted from the plurality of very small light source images are incident upon the respective microlens elements of the second lens array so as to be projected onto the pixels of the light valve. Therefore, since the light incident upon openings of the light valve can be increased without thinning an incident side glass substrate of the light valve, substantial aperture ratio of the light valve apparatus may be improved. When the above light valve apparatus is used for a projection display system, projected images can be more brightened, while, if the above light valve apparats is applied to a view-finder system, it becomes possible to reduce the power consumption and also to improve brightness of the display images.
摘要翻译：一种光阀装置，其中第一透镜阵列，第二透镜阵列和光阀从入射光侧依次布置，并且用于第一透镜阵列的每个微透镜元件的焦距设置为短于用于第二透镜阵列的每个微透镜元件的焦距和第二透镜阵列的相应微透镜元件适于形成对应于第一透镜阵列的各个微透镜元件的焦点上的假想物体的实像，光阀的相应像素。通过第一透镜阵列，形成对应于光源的多个非常小的光源图像，并且从多个非常小的光源图像发射的光入射到第二透镜阵列的相应微透镜元件上，从而为投影到光阀的像素上。因此，由于可以增加入射到光阀的开口的光而不会使光阀的入射侧玻璃基板变薄，所以可以提高光阀装置的大的开口率。当上述光阀装置用于投影显示系统时，投影图像可以更加亮起，而如果将上述光阀装置应用于取景器系统，则可以降低功耗并且还能够改善显示图像的亮度。

42. 发明授权

US5430562A Liquid crystal light valve including between light and light valve microlenses and two reflecting layers with a matrix of openings 失效
标题翻译：液晶光阀包括光和光阀微透镜和两个具有开口矩阵的反射层
公开(公告)号：US5430562A
公开(公告)日：1995-07-04
申请号：US185025
申请日：1994-01-24
申请人： Yoshimasa Fushimi , Yoshito Miyatake
发明人： Yoshimasa Fushimi , Yoshito Miyatake
IPC分类号： G02F1/1335 , H04N9/31
CPC分类号： H04N9/3105 , G02F1/133526 , G02F1/133553 , G02F1/133512
摘要： A liquid-crystal light valve unit and a projection display system using same are provided. The liquid-crystal light valve includes a light valve having openings defining pixels in a matrix arrangement, first light-reflecting layer for reflecting light projected from a light source entering out of the openings of the light valve, a second light-reflecting layer, including openings in a matrix arrangement, located between the light source and the first light-reflecting layer, for directing the light reflected from the first light-reflecting layer toward the light valve while allowing the light from the light source to be propagated through the openings to the light valve, and a lens array including a plurality of positive lens elements in a matrix arrangement for directing the light from the light source to the second light-reflecting layer, a focal point of each of the positive lens elements being defined on a given area in the vicinity of each of the openings of the second light-reflecting layer. With this arrangement, an effective aperture ratio is increased for projection of bright images.
摘要翻译：提供一种液晶光阀单元和使用它的投影显示系统。液晶光阀包括具有矩阵排列像素的开口的光阀，第一光反射层，用于反射从光阀的开口射出的光源投射的光;第二光反射层，包括位于光源和第一光反射层之间的矩阵布置的开口，用于将来自第一光反射层的光朝向光阀引导，同时允许来自光源的光通过开口传播到光阀，以及包括多个正透镜元件的透镜阵列，矩阵布置用于将光从光源引导到第二光反射层，每个正透镜元件的焦点被限定在给定的在第二光反射层的每个开口附近的区域。通过这种布置，为了投影亮度图像，有效开口率增加。

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