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1. 发明授权

US5020877A Rear projection screen 失效
标题翻译：背投屏幕
公开(公告)号：US5020877A
公开(公告)日：1991-06-04
申请号：US514804
申请日：1990-04-26
申请人： Toru Yokoo , Takashi Kobane , Akihiko Seki , Yasuhiro Yamakawa , Yoshikazu Kawakami
发明人： Toru Yokoo , Takashi Kobane , Akihiko Seki , Yasuhiro Yamakawa , Yoshikazu Kawakami
IPC分类号： G03B21/62
CPC分类号： G03B21/625
摘要： A rear projection screen comprises, in combination, a Fresnel lens having concentric annular ridges arranged at a radial pitch of P1, and a lenticular lens having parallel lenticulars arranged at a pitch P2. The pitch ratio P1/P2 between the pitches P1 and P2 is determined in the range of 0.1505 to 0.1545 or in the range of 0.176 to 0.181. The rear projection screen meeting such a condition suppresses effectively the moire effect of the concentric annular ridges of the Fresnel lens and the parallel lenticulars of the lenticular lens disposed adjacent to the Fresnel lens.
摘要翻译：背投屏幕组合包括具有以P1的径向间距布置的同心环形脊的菲涅尔透镜，以及具有以节距P2布置的平行透镜的双凸透镜。间距P1和P2之间的间距比P1 / P2在0.1505至0.1545的范围内或0.176至0.181的范围内确定。满足这种条件的背投屏幕有效地抑制了菲涅耳透镜的同心圆脊的波纹效应和邻近菲涅尔透镜设置的双凸透镜的平行透镜。

2. 发明授权

US5074644A Rear projection television 失效
标题翻译：背投电视
公开(公告)号：US5074644A
公开(公告)日：1991-12-24
申请号：US640783
申请日：1991-01-14
申请人： Motoharu Hirai , Katuzi Suzuki, deceased , Toru Yokoo , Hideki Yamamoto
发明人： Motoharu Hirai , Katuzi Suzuki, deceased , Toru Yokoo , Hideki Yamamoto
IPC分类号： G03B21/10 , G03B21/62 , H04N5/74
CPC分类号： H04N9/3141 , G03B21/10 , G03B21/625
摘要： A rear-projection television has a transmission type two-layer screen made up of a Fresnel lens and a lenticular lens stacked together. Between the two lenses is interposed a transparent protective sheet which protects the lenses from wear or score, which would otherwise result from rubbing due to vibrations during shipping. The use of a transparent protective sheet sandwiched between the two lenses permits a series of adjustments and a final inspection on the TV to be made with the product screen mounted in the cabinet. This eliminates the need to mount a jig screen identical with the product screen in place of the latter during the adjustments, reducing the overall amount of time spent in the manufacturing process.
摘要翻译：背投电视机具有由菲涅尔透镜和双凸透镜组合在一起的透射型双层屏幕。在两个透镜之间插入透明保护片，其保护镜片不会因运输中的振动而摩擦而导致磨损或刻痕。使用夹在两个镜头之间的透明保护片允许在安装在柜中的产品屏幕上对TV进行一系列调整和最终检查。这样就不需要在调整过程中安装与产品屏幕相同的夹具屏幕代替后者，从而减少了在制造过程中花费的总时间。

3. 发明授权

US5096278A Reflective screen for front-projection television 失效
标题翻译：前投影电视反光屏
公开(公告)号：US5096278A
公开(公告)日：1992-03-17
申请号：US614136
申请日：1990-11-16
申请人： Takayuki Yoshioka , Toru Yokoo
发明人： Takayuki Yoshioka , Toru Yokoo
IPC分类号： G03B21/62 , G03B21/60
CPC分类号： G03B21/602
摘要： The front surface of a lens plate is worked into lenticules extending in the vertical direction. A reflective material is provided in the rear of the lens plate. Black stripes are vertically formed on the back surface of the lens plate such that their pitch is increased from the center toward the right and left edges of the screen so that incident light emitted from CRTs or a liquid crystal projector and reflected light from the reflective material pass between the black stripes.
摘要翻译：透镜板的前表面被加工成沿垂直方向延伸的微透镜。反射材料设置在透镜板的后部。黑色条纹在透镜板的背面垂直形成，使得它们的间距从屏幕的中心向左右边缘增加，使得从CRT或液晶投影仪发射的入射光和来自反射材料的反射光通过黑条纹。

4. 发明授权

US5013132A Rear-projection television 失效
标题翻译：背投电视
公开(公告)号：US5013132A
公开(公告)日：1991-05-07
申请号：US563641
申请日：1990-08-07
申请人： Toru Yokoo , Hideki Yamamoto
发明人： Toru Yokoo , Hideki Yamamoto
IPC分类号： G03B21/10 , G03B21/62 , H04N5/74
CPC分类号： H04N9/3141 , G03B21/10 , G03B21/62
摘要： A rear-projection television has a transmission type two-layer screen made up of a Fresnel lens and a lenticular lens stacked together. Between the two lenses is interposed a transparent protective sheet which protects the lenses from wear or score, which would otherwise result from rubbing due to vibrations during shipping. The use of the transparent protective sheet sandwiched between the two lenses permits a series of adjustments and a final inspection on TV to be made with the product screen mounted in the cabinet. This eliminates the need to mount a jig screen identical with the product screen in place of the latter during the adjustments, reducing the overall amount of time spent in the manufacturing process.
摘要翻译：背投电视机具有由菲涅尔透镜和双凸透镜组合在一起的透射型双层屏幕。在两个透镜之间插入透明保护片，其保护镜片不会因运输中的振动而摩擦而导致磨损或刻痕。夹在两个镜头之间的透明保护片的使用允许通过安装在机柜中的产品屏幕进行一系列的调整和对TV的最终检查。这样就不需要在调整过程中安装与产品屏幕相同的夹具屏幕代替后者，从而减少了在制造过程中花费的总时间。

5. 发明授权

US5146342A Rear projection television set with lenticular sheet and fresnel lens 失效
标题翻译：背投电视机带透镜片和菲涅尔透镜
公开(公告)号：US5146342A
公开(公告)日：1992-09-08
申请号：US625197
申请日：1990-12-10
申请人： Toru Yokoo , Takashi Nagashima
发明人： Toru Yokoo , Takashi Nagashima
IPC分类号： H04N9/31
CPC分类号： H04N9/31
摘要： A rear projection television set in which a lenticular sheet is superposed to a Fresnel lens to form a light transmissive screen, at least one projection cathode ray tube projects an image onto the Fresnel lens so that the image through the lenticular is viewed by a viewer. A projector lens is mounted to the projection cathode ray tube and has an exit pupil so as to project the image from the projection tube onto the Fresnel lens. The image through the lenticular sheet is viewed at a distance from the lenticular lens, wherein there is a relation a.times.b
摘要翻译：一种背投电视机，其中双凸透镜片叠置在菲涅尔透镜上以形成透光屏，至少一个投影阴极射线管将图像投影到菲涅尔透镜上，使得通过观察者观看通过透镜的图像。投影透镜安装在投影阴极射线管上，并具有出射光瞳，以将图像从投影管投射到菲涅尔透镜上。从双凸透镜的距离处观察通过透镜片的图像，其中存在关系axb <5.5，其中a是投影透镜2的出射光瞳和菲涅耳透镜1之间的距离，b是用于最大半径等于屏幕的垂直尺寸。

6. 发明授权

US5071224A Lenticular lens for use in back projection type television receiver 失效
标题翻译：用于背投式电视接收机的透镜
公开(公告)号：US5071224A
公开(公告)日：1991-12-10
申请号：US560451
申请日：1990-07-25
申请人： Toru Yokoo
发明人： Toru Yokoo
IPC分类号： G02B3/00 , G02B3/06 , G03B21/62 , H04N5/74
CPC分类号： G03B21/625
摘要： A lenticular lens is provided for use in a back projection type television receiver. The lenticular lens is provided with an exit face having formed thereon a lens portion and two reflecting portions. The lens portion refracts light from a lenticule before the light emerges therefrom. The reflecting portions are on both sides of said lens portion, and each has a reflecting face erected with respect to the screen surface. Part of the incident light is totally reflected by the reflecting portion toward the lens portion whereby the light emerges from the lens portion. Because of this arrangement, the pitch between adjacent lenticules or exit faces can be reduced without rendering the lenticular lens unduly thin.
摘要翻译：提供双凸透镜用于背投式电视接收机。双凸透镜设置有在其上形成有透镜部分和两个反射部分的出射面。透镜部分在光出射之前折射来自微透镜的光。反射部分位于透镜部分的两侧，并且每个具有相对于屏幕表面竖立的反射面。入射光的一部分被反射部分全部反射到透镜部分，由此从透镜部分出射光。由于这种布置，可以减小相邻微透镜或出射面之间的间距，而不会使双凸透镜变得过薄。

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