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1. 发明授权

US4729631A Rear projection screen 失效
标题翻译：背投屏幕
公开(公告)号：US4729631A
公开(公告)日：1988-03-08
申请号：US43025
申请日：1987-04-27
申请人： Hideo Takahashi , Masao Inoue , Shingo Suzuki , Yasuaki Nakanishi
发明人： Hideo Takahashi , Masao Inoue , Shingo Suzuki , Yasuaki Nakanishi
IPC分类号： G03B21/62 , G03B21/625 , G03B21/60
CPC分类号： G03B21/625
摘要： Provided is a rear projection screen apparatus having a rear projection screen, light rays from a projecter being incident upon the rear surface of the rear projection screen at steep angles, wherein a plurality of elongated prisms are formed on the rear surface of the screen, each prism having a reflection surface extending therealong, thereby the incedence light rays are internally reflected, and then transmitted through the medium of screen for emerging from the front surface of the screen on the viewing side, and the rear surface of the screen is in a curve shape which is convex toward the viewing side so that the brightness of the screen can be made to be uniform.
摘要翻译：本发明提供一种背投屏幕装置，其具有后投影屏幕，来自投影仪的光线以陡角入射在后投影屏幕的后表面上，其中多个细长棱镜形成在屏幕的后表面上，每个棱镜具有沿其延伸的反射表面，从而内部反射入射光线，然后透过屏幕介质透过观察侧的屏幕前表面，屏幕的后表面处于曲线形状朝向观察侧凸出，使得可以使屏幕的亮度均匀。

2. 发明授权

US4927233A Rear projection screen 失效
标题翻译：背投屏幕
公开(公告)号：US4927233A
公开(公告)日：1990-05-22
申请号：US319629
申请日：1989-03-06
申请人： Yasuaki Nakanishi , Masao Inoue
发明人： Yasuaki Nakanishi , Masao Inoue
IPC分类号： G03B21/62
CPC分类号： G03B21/625
摘要： A screen medium of a rear projection screen is formed on its incidence surface with lenticular lenses, and on its viewing surface with lenticular lenses in light focusing area and with grooves and ridges in no-light focusing areas. Each of the grooves is bordered by the ridges and filled therein a ink so as to form an ambient light absorbing layer.
摘要翻译：后投影屏幕的屏幕介质在其入射面上形成双凸透镜，并且在其观察表面上形成有光聚焦区域中的双凸透镜，并且在无光聚焦区域中具有凹槽和脊。每个凹槽由脊边界，并填充墨水以形成环境光吸收层。

3. 发明申请

US20080102230A1 Diffusing Plate For Transmissive Screen, Transmissive Screen And Rear Projection Display Apparatus 审中-公开
标题翻译：透射屏扩散板，透射屏幕和后投影显示设备
公开(公告)号：US20080102230A1
公开(公告)日：2008-05-01
申请号：US11660156
申请日：2006-06-13
申请人： Satoru Murata , Takaaki Iwaki , Yasuaki Nakanishi , Toshiya Kono , Yukio Kokuzawa , Katsuyuki Murai
发明人： Satoru Murata , Takaaki Iwaki , Yasuaki Nakanishi , Toshiya Kono , Yukio Kokuzawa , Katsuyuki Murai
IPC分类号： G02B5/02
CPC分类号： G02B5/0278 , G02B5/0242 , G03B21/62
摘要： A transmissive screen includes a diffusing plate 7 having two first diffusing layers 13 and 15, to which diffusing particles are added respectively, arranged with a second diffusing layer 14, to which diffusing particles whose particle size is smaller than that of the first diffusing layers 13 and 15 are added, in between. Accordingly, even in the case where a diameter of a projection pupil of a projection lens that projects light onto the transmissive screen is small, an image glaring when displaying a bright image can be controlled, while minimizing deterioration of gain, resolution and uniformity.
摘要翻译：透射屏包括扩散板7，扩散板7具有两个第一扩散层13和15，分别加入有扩散粒子，第二漫射层14布置成与第一漫射层13的粒径小的扩散粒子和15之间。因此，即使在将光投射到透射屏幕上的投影透镜的投影光瞳的直径小的情况下，也可以控制显示亮图像时的图像眩光，同时使增益的降低，分辨率和均匀性最小化。

4. 发明授权

US06256145B1 Method for improving image contrast with lessened scintillation in a rear projection display apparatus 失效
标题翻译：用于在后投影显示装置中用减少的闪烁来改善图像对比度的方法
公开(公告)号：US06256145B1
公开(公告)日：2001-07-03
申请号：US09061943
申请日：1998-04-17
申请人： Toshiya Kono , Yasuaki Nakanishi
发明人： Toshiya Kono , Yasuaki Nakanishi
IPC分类号： G03B2160
CPC分类号： G03B21/625
摘要： A rear projection display apparatus is provided with a screen unit. The screen unit includes a Fresnel lens sheet for gathering incident image light, a lenticular lens sheet for causing the image light gathered by the Fresnel lens sheet to be incident thereon and to be diffused, and having an external-light absorbing layer on the emergent side thereof, and a light diffusing structure for diffusing the image light incident on the lenticular lens sheet. The haze of the light diffusing structure is set at a predetermined value, and the covering ratio per unit area of the external-light absorbing layer is set according to the diffusion property represented by the haze so that it is smaller than the case in which no light diffusing structure is employed.
摘要翻译：背投显示装置设有屏幕单元。屏幕单元包括用于聚集入射图像光的菲涅耳透镜片，用于使由菲涅尔透镜片收集的图像光入射并散射的双凸透镜片，并且在出射侧具有外部光吸收层以及用于扩散入射在双凸透镜片上的图像光的光漫射结构。将光漫射结构的雾度设定为规定值，根据由雾度表示的扩散性，设定外部光吸收层的单位面积的覆盖率，使其小于无采用光漫射结构。

5. 发明授权

US5803567A Protection-type display device 失效
标题翻译：保护型显示装置
公开(公告)号：US5803567A
公开(公告)日：1998-09-08
申请号：US733925
申请日：1996-10-18
申请人： Yasuaki Nakanishi
发明人： Yasuaki Nakanishi
IPC分类号： G03B21/10 , G03B21/62 , H04N5/74 , G03B21/14
CPC分类号： H04N5/7408 , G03B21/625
摘要： A projection-type display device includes an image projector and a screen, in which image projector is for projecting image light rays and the screen is disposed on a side to which the image light rays are projected from the image projector. The screen is formed of a Fresnel lens sheet with one side thereof facing the image projector and a lenticular sheet disposed on the other side of the Fresnel lens sheet for transmitting the image light rays that are formed into a picture on the screen. The Fresnel lens sheet has a fixed focal length in a region from the center of the Fresnel lens sheet to a prescribed distance and focal lengths gradually decreasing toward the outer periphery of the Fresnel lens sheet in a region exceeding the prescribed distance.
摘要翻译：投影型显示装置包括图像投影仪和屏幕，其中图像投影仪用于投射图像光线，并且屏幕设置在图像光线从图像投影仪投射的一侧。该屏幕由菲涅尔透镜片形成，其一面朝向图像投影仪，并且设置在菲涅尔透镜片的另一侧上的透镜片，用于将形成图像的图像光线传输到屏幕上。菲涅耳透镜片在从菲涅尔透镜片的中心到规定距离的区域中具有固定的焦距，焦距在超过规定距离的区域中朝向菲涅尔透镜片的外周逐渐减小。

6. 发明授权

US5402263A Rear projector having an angled screen mounting frame 失效
标题翻译：后投影机具有倾斜的屏幕安装框架
公开(公告)号：US5402263A
公开(公告)日：1995-03-28
申请号：US191925
申请日：1994-02-04
申请人： Tetsuya Kita , Yasuaki Nakanishi , Shintaro Takahata
发明人： Tetsuya Kita , Yasuaki Nakanishi , Shintaro Takahata
IPC分类号： G03B21/10 , H04N5/74 , G03B21/56
CPC分类号： H04N9/3141 , G03B21/10
摘要： A rear projector for projecting an image onto a display screen mounted on a frame. The frame includes first and second pairs of oppositely disposed mounting members having surfaces adapted to contact the screen. Each mounting member of the first pair is formed of first and second inwardly angled portions which meet at a juncture in a middle region of the member. The screen is coupled to the surfaces of the first and second pairs of mounting members to form an inward curvature of the screen.
摘要翻译：一种用于将图像投影到安装在框架上的显示屏幕上的后投影仪。框架包括具有适于接触屏幕的表面的第一对和第二对相对布置的安装构件。第一对的每个安装构件由在构件的中间区域中的接合处相交的第一和第二向内成角度的部分形成。屏幕耦合到第一和第二对安装构件的表面以形成屏幕的向内曲率。

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