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1. 发明授权

US4948237A Projection lens system 失效
标题翻译：投影镜头系统
公开(公告)号：US4948237A
公开(公告)日：1990-08-14
申请号：US188482
申请日：1988-04-29
申请人： Koji Hirata , Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Masayuki Muranaka , Isao Yoshizaki , Shigeru Inaoka , Hiroshi Jitsukata
发明人： Koji Hirata , Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Masayuki Muranaka , Isao Yoshizaki , Shigeru Inaoka , Hiroshi Jitsukata
IPC分类号： G02B13/16 , G02B9/34 , G02B13/18
CPC分类号： G02B13/18
摘要： In a projection system wherein an optical system comprising a first lens for correcting a spherical aberration dependent on the aperture length, a second lens for enlargement and a third lens for correcting a field curvature, projects an image reproduced on a CRT having a curved phosphor surface, onto a screen, the third lens is spaced from the CRT so that the region of the phosphor surface which again totally reflects a light which has been totally reflected by a screen-side surface of the third lens is limited to the edge portion of an effective region of the phosphor surface.
摘要翻译：在一种投影系统中，其中包括用于校正取决于孔径长度的球面像差的第一透镜的光学系统，用于放大的第二透镜和用于校正场曲率的第三透镜，投影在具有弯曲荧光粉表面的CRT上再现的图像在屏幕上，第三透镜与CRT间隔开，使得再次完全反射已被第三透镜的屏幕侧表面完全反射的光的荧光体表面的区域被限制到第三透镜的边缘部分荧光粉表面的有效区域。

2. 发明授权

US5200814A Video projector with optical color balance 失效
标题翻译：具有光学色平衡的视频投影机
公开(公告)号：US5200814A
公开(公告)日：1993-04-06
申请号：US511790
申请日：1990-04-20
申请人： Koji Hirata , Hiroki Yoshikawa , Takahiko Yoshida , Tooru Numata , Masayuki Muranaka , Kiyoshi Wada , Isao Yoshizaki , Shigeru Inaoka
发明人： Koji Hirata , Hiroki Yoshikawa , Takahiko Yoshida , Tooru Numata , Masayuki Muranaka , Kiyoshi Wada , Isao Yoshizaki , Shigeru Inaoka
IPC分类号： G02B13/16 , G02B13/18 , G02B27/00 , H04N9/31
CPC分类号： H04N9/31 , G02B13/16 , G02B13/18 , G02B27/0025
摘要： Disclosed is a projection lens system for use in an optical system for magnifying and projecting original images displayed on plural image display devices onto a screen through projection lenses provided in corresponding relation to the image display devices, which projection lens system comprises plural lens elements and in which according to colors or degrees of fineness of original images, the number of constituent lenses, or the shape of lens surface, or an effective aperture of at least one constituent lens element surface, or the number of constituent lenses and the shape of lens surface, or the number of constituent lenses and an effective aperture of at least one constituent lens element surface, or the shape of lens surface and an effective aperture of at least one constituent lens element surface, or the number of constituent lenses, the shape of lens surface and an effective aperture of at least one constituent lens element surface, are changed at a time.
摘要翻译：公开了一种用于光学系统的投影透镜系统，用于通过与图像显示装置相对应地设置的投影透镜将显示在多个图像显示装置上的原始图像放大和投影到屏幕上，该投影透镜系统包括多个透镜元件，并且其根据原始图像的颜色或程度，构成透镜的数量，或透镜表面的形状，或至少一个构成透镜元件表面的有效孔径，或构成透镜的数量和透镜表面的形状，或构成透镜的数量和至少一个构成透镜元件表面的有效孔径，或透镜表面的形状和至少一个构成透镜元件表面的有效孔径，或构成透镜的数量，透镜的形状表面和至少一个构成透镜元件表面的有效孔径一次改变。

3. 发明授权

US5272540A Temperature compensating lens system for projection television 失效
标题翻译：投影电视用温度补偿透镜系统
公开(公告)号：US5272540A
公开(公告)日：1993-12-21
申请号：US759518
申请日：1991-09-13
申请人： Koji Hirata , Hiroki Yoshikawa , Tooru Numata , Kiyoshi Wada , Masayuki Muranaka , Isao Yoshizaki , Takahiko Yoshida , Shigeru Inaoka
发明人： Koji Hirata , Hiroki Yoshikawa , Tooru Numata , Kiyoshi Wada , Masayuki Muranaka , Isao Yoshizaki , Takahiko Yoshida , Shigeru Inaoka
IPC分类号： G02B3/12 , G02B13/16 , G02B13/18 , H04N9/31 , H04N5/74
CPC分类号： G02B13/16 , G02B13/18 , G02B3/12 , H04N9/31
摘要： In a projection lens device having at least two plastic lenses for magnification-projecting an original image displayed on a display screen onto a screen, one of the two plastic lens is convex at a center thereof toward the screen and concave at a periphery thereof, and the other lens has a weak positive refractive power toward the screen at a center thereof and a stronger positive refractive power at a periphery thereof. A variation of a lens power due to a change of a surrounding environment is cancelled out by the concave shape at the periphery of the one lens and the positive refractive power at the periphery of the other lens.
摘要翻译：在具有至少两个用于将显示屏上显示的原始图像放大投影到屏幕上的塑料透镜的投影透镜装置中，两个塑料透镜中的一个在其中心处朝向屏幕凸出并在其周边凹陷，并且另一个透镜在其中心处具有朝向屏幕的弱正的屈光力，并且在其周边具有更强的正折射光焦度。由于周围环境的变化引起的透镜光焦度的变化通过在一个透镜的周边处的凹形形状和另一个透镜的周边处的正屈光力被抵消。

4. 发明授权

US5513037A Rear-projection screen and a rear projection image display employing the rear-projection screen 失效
标题翻译：后投影屏幕和采用后投影屏幕的背投影像显示器
公开(公告)号：US5513037A
公开(公告)日：1996-04-30
申请号：US336528
申请日：1994-11-09
申请人： Takahiko Yoshida , Koji Hirata , Hiroki Yoshikawa , Masayuki Muranaka , Isao Yoshizaki , Atsuo Osawa
发明人： Takahiko Yoshida , Koji Hirata , Hiroki Yoshikawa , Masayuki Muranaka , Isao Yoshizaki , Atsuo Osawa
IPC分类号： G03B21/62 , G03B21/60
CPC分类号： G03B21/625
摘要： A rear-projection screen for a rear-projection image display comprises a Fresnel lens sheet (2) and a lenticular lens sheet (3), or a Fresnel lens sheet (2), a lenticular lens sheet (3) and a light absorbing sheet (4). The entrance surface (21) of the Fresnel lens sheet (2) or the entrance surface (41) of the light absorbing sheet (4) is formed by contiguously and vertically arranging a plurality of horizontally elongate lenticular lenses. The thickness of the Fresnel lens sheet (2) is approximately equal to that of the lenticular lens sheet (3). The entrance surface (31) and the exit surface (32) of the lenticular lens sheet (3) are formed by contiguously and horizontally arranging a plurality of vertically elongate lenticular lenses. Particles of a light diffusing material, which is essential to the prior art rear-projection screen, are not necessarily dispersed in the base sheet (30) of the lenticular lens sheet (3). The rear-projection image display provided with this rear-projection screen has satisfactory focusing characteristics and enhanced vertical directional characteristics and is capable of displaying an image in high brightness and high contrast.
摘要翻译：背投影像显示器的背投屏幕包括菲涅尔透镜片（2）和双凸透镜片（3），或菲涅耳透镜片（2），双凸透镜片（3）和光吸收片（4）。菲涅耳透镜片（2）的入射表面（21）或光吸收片（4）的入射表面（41）通过连续且垂直地布置多个水平细长的双凸透镜而形成。菲涅尔透镜片（2）的厚度大致等于双凸透镜片（3）的厚度。双凸透镜片（3）的入射表面（31）和出射表面（32）通过连续且水平地布置多个垂直细长的双凸透镜而形成。对于现有技术的背投屏幕来说，光漫射材料的颗粒不一定分散在双凸透镜片（3）的基片（30）中。设置有该背投屏幕的背投影像显示器具有令人满意的聚焦特性和增强的垂直方向特性，并且能够以高亮度和高对比度显示图像。

5. 发明授权

US5066099A Rear projection screen and method of producing the same 失效
标题翻译：背投屏幕及其制作方法
公开(公告)号：US5066099A
公开(公告)日：1991-11-19
申请号：US513854
申请日：1990-04-24
申请人： Takahoko Yoshida , Masayuki Muranaka , Hiroki Yoshikawa , Koji Hirata , Isao Yoshizaki , Masakuni Teratani , Nobuhiro Konuma
发明人： Takahoko Yoshida , Masayuki Muranaka , Hiroki Yoshikawa , Koji Hirata , Isao Yoshizaki , Masakuni Teratani , Nobuhiro Konuma
IPC分类号： G02B3/00 , G02B3/06 , G02B5/02 , G03B21/62 , G03B21/625 , G09F9/00 , H04N5/74 , H04N9/31
CPC分类号： G03B21/625
摘要： A rear projection screen for use in a rear projection image display device comprises one or more sheet members through which light is sequentially transmitted from the side of a plane of incidence of the screen, the last sheet member comprising a transparent material as a base thereof, and a light diffusing layer provided on the side of a plane of emergence of the base. A light diffuser having a refractive index different from that of the base may be dispersed in the base so as to contrive a greater viewing angle. Further, a transperent binder for supporting the light diffuser dispersed in the light diffusing layer or the light diffuser itself may be colored in order to obtain a further enhanced contrast.
摘要翻译：用于后投影图像显示装置的背投屏幕包括一个或多个片状构件，光从屏幕的入射面的一侧依次传输，最后的片构件包括作为其基底的透明材料，以及设置在基底的出射面的一侧的光漫射层。具有与基底不同的折射率的光漫射体可以分散在基底中以便产生更大的视角。此外，为了获得进一步增强的对比度，可以着色用于支撑分散在光漫射层或光扩散器本身中的光漫射体的透射粘合剂。

6. 发明授权

US5400114A Rear-projection screen and a rear projection image display employing the rear-projection screen 失效
标题翻译：后投影屏幕和采用后投影屏幕的背投影像显示器
公开(公告)号：US5400114A
公开(公告)日：1995-03-21
申请号：US938861
申请日：1992-09-01
申请人： Takahiko Yoshida , Koji Hirata , Hiroki Yoshikawa , Masayuki Muranaka , Isao Yoshizaki , Atsuo Osawa
发明人： Takahiko Yoshida , Koji Hirata , Hiroki Yoshikawa , Masayuki Muranaka , Isao Yoshizaki , Atsuo Osawa
IPC分类号： G03B21/62 , G03B21/60
CPC分类号： G03B21/625
摘要： A rear-projection screen for a rear-projection image display comprising a Fresnel lens sheet (2) and a lenticular lens sheet (3), or a Fresnel lens sheet (2), a lenticular lens sheet (3) and a light absorbing sheet (4). The entrance surface (21) of the Fresnel lens sheet (2) or the entrance surface (41) of the light absorbing sheet (4) is formed by contiguously and vertically arranging a plurality of horizontally elongate lenticular lenses. The thickness of the Fresnel lens sheet (2) is approximately equal to that of the lenticular lens sheet (3). The entrance surface (31) and the exit surface (32) of the lenticular lens sheet (3) are formed by contiguously and horizontally arranging a plurality of vertically elongate lenticular lenses. Particles of a light diffusing material, which is essential to the prior art rear-projection screen, are not necessarily dispersed in the base sheet (30) of the lenticular lens sheet (3). The rear-projection image display provided with this rear-projection screen has satisfactory focusing characteristics and enhanced vertical directional characteristics and is capable of displaying an image in high brightness and high contrast.
摘要翻译：一种用于背投影像显示器的背投屏幕，包括菲涅尔透镜片（2）和双凸透镜片（3），或菲涅尔透镜片（2），双凸透镜片（3）和光吸收片（4）。菲涅尔透镜片（2）的入射表面（21）或光吸收片（4）的入射表面（41）通过连续且垂直地布置多个水平细长的双凸透镜而形成。菲涅尔透镜片（2）的厚度大致等于双凸透镜片（3）的厚度。双凸透镜片（3）的入射表面（31）和出射表面（32）通过连续且水平地布置多个垂直细长的双凸透镜而形成。对于现有技术的背投屏幕来说，光漫射材料的颗粒不一定分散在双凸透镜片（3）的基片（30）中。设置有该背投屏幕的背投影像显示器具有令人满意的聚焦特性和增强的垂直方向特性，并且能够以高亮度和高对比度显示图像。

7. 发明授权

US4824224A Lens system for a cathode ray tube projection system 失效
标题翻译：用于阴极射线管投影系统的透镜系统
公开(公告)号：US4824224A
公开(公告)日：1989-04-25
申请号：US948251
申请日：1986-12-31
申请人： Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Koji Hirata , Soichi Sakurai
发明人： Kyohei Fukuda , Hiroki Yoshikawa , Shigeru Mori , Koji Hirata , Soichi Sakurai
IPC分类号： H04N5/74 , G02B3/04 , G02B9/34 , G02B9/60 , G02B13/16 , G02B13/18 , G02B3/02 , H04N5/72
CPC分类号： G02B9/34 , G02B13/16 , G02B13/18 , G02B3/04
摘要： An improved lens system for a projection television is described. The lens system is designed to be used with a cathode ray tube having a face glass with an aspheric surface having phosphor elements mounted thereto. The aspheric surface of the face glass has its maximum radius at the optical axis and is of lesser radius outwardly thereof. From the screen, the lens system companies a first aspheric lens of relatively weak power, a second biconvex lens of relatively high positive power, a third aspheric lens of weak positive power and a fourth lens having a concave face on its screen sider and of relatively large negative power.
摘要翻译：描述了用于投影电视的改进的透镜系统。透镜系统设计成与具有带有安装有荧光体元件的非球面的面玻璃的阴极射线管一起使用。面玻璃的非球面表面在光轴处具有最大半径，并且其外侧具有较小的半径。从屏幕上看，透镜系统公司具有功率相对较弱的第一非球面透镜，具有相对高正功率的第二双凸透镜，弱正功率的第三非球面透镜和在屏幕上具有凹面的第四透镜，并且相对大负功率

8. 发明授权

US5103302A Optical system for projection type image display device 失效
标题翻译：投影式图像显示装置的光学系统
公开(公告)号：US5103302A
公开(公告)日：1992-04-07
申请号：US466927
申请日：1990-01-18
申请人： Takahiko Yoshida , Hiroki Yoshikawa , Shigeru Mori , Koji Hirata , Tooru Numata , Isao Yoshizaki , Mitsuo Okimoto
发明人： Takahiko Yoshida , Hiroki Yoshikawa , Shigeru Mori , Koji Hirata , Tooru Numata , Isao Yoshizaki , Mitsuo Okimoto
IPC分类号： H04N9/31
CPC分类号： H04N9/31
摘要： A projection type image display device provided with three projecting lenses projecting light emitted by cathode-ray tubes of different colors, red, green and blue, on a screen while enlarging an image is disclosed, in which clapper plates are disposed preferably in front of the red and the blue image source and the clapper plates have different shapes so as to obtain an image without the fluctuation in the color on the whole surface of the screen, even in the case where the distance from the cathode-ray tubes to the screen is shortened in order to reduce the size of the display device.
摘要翻译：公开了一种投影型图像显示装置，其具有三个投影透镜，用于在放大图像的同时在屏幕上投射由红色，绿色和蓝色不同颜色的阴极射线管发射的光，其中拍板最好设置在红色和蓝色图像源和拍板具有不同的形状，以便在屏幕的整个表面上获得没有颜色波动的图像，即使在从阴极射线管到屏幕的距离为缩短以减小显示装置的尺寸。

9. 发明授权

US5485308A Rear-projection type image display apparatus and rear-projection type screen 失效
标题翻译：背投型图像显示装置和背投型屏幕
公开(公告)号：US5485308A
公开(公告)日：1996-01-16
申请号：US387354
申请日：1995-02-13
申请人： Koji Hirata , Takahiko Yoshida , Hiroki Yoshikawa , Masayuki Muranaka , Atsuo Osawa , Yutaka Matuda
发明人： Koji Hirata , Takahiko Yoshida , Hiroki Yoshikawa , Masayuki Muranaka , Atsuo Osawa , Yutaka Matuda
IPC分类号： G03B21/62 , H04N5/74 , G03B21/60
CPC分类号： G03B21/625
摘要： A rear-projection screen for a rear-projection image display apparatus comprises a Fresnel lens sheet, a first lenticular lens sheet, and a second lenticular lens sheet or a Fresnel lens sheet, first and second lenticular lens sheets and a light absorbing sheet. A light entrance surface of the first lenticular lens sheet or a light exit surface thereof, or both of these surfaces are formed by contiguously and vertically arranging a plurality of horizontally elongate lenticular lenses. A thickness of the first lenticular lens sheet is selected to be the thinner than thicknesses of the Fresnel lens sheet, the second lenticular lens sheet, and the light absorbing sheet. The entrance surface and the exit surface of the second lenticular lens sheet are formed by contiguously and horizontally arranging a plurality of vertically elongate lenticular lenses. Particles of a light diffusing material are not necessarily dispersed in the base sheet of the second lenticular lens sheet. The rear-projection image display apparatus provided with this rear-projection screen has satisfactory focusing characteristics and enhanced vertical directional characteristics and is capable of displaying an image in high brightness and high contrast.
摘要翻译：背投影像显示装置的背投屏幕包括菲涅尔透镜片，第一双凸透镜片，第二双凸透镜片或菲涅耳透镜片，第一和第二柱状透镜片和光吸收片。第一双凸透镜片的光入射表面或其光出射表面或这两个表面的两个形状通过连续且垂直地布置多个水平细长的双凸透镜而形成。第一双凸透镜片的厚度被选择为比菲涅尔透镜片，第二双凸透镜片和光吸收片的厚度薄。第二双凸透镜片的入射面和出射面通过连续且水平地布置多个垂直细长的双凸透镜形成。光漫射材料的颗粒不一定分散在第二双凸透镜片的基片中。设置有该背投屏幕的背投影像显示装置具有令人满意的聚焦特性和增强的垂直方向特性，并且能够以高亮度和高对比度显示图像。

10. 发明授权

US06535267B2 Liquid crystal display apparatus having liquid crystal display element immersed in cooling medium 有权
标题翻译：具有浸没在冷却介质中的液晶显示元件的液晶显示装置
公开(公告)号：US06535267B2
公开(公告)日：2003-03-18
申请号：US09886151
申请日：2001-06-22
申请人： Toru Numata , Yasuo Otsuka , Mikio Shiraishi , Koji Hirata , Naoyuki Ogura , Shigeru Inaoka , Kazunari Nakagawa , Shigeru Mori , Masahiko Yatsu
发明人： Toru Numata , Yasuo Otsuka , Mikio Shiraishi , Koji Hirata , Naoyuki Ogura , Shigeru Inaoka , Kazunari Nakagawa , Shigeru Mori , Masahiko Yatsu
IPC分类号： G02F11333
CPC分类号： H04N9/3141 , G02F1/133308 , G02F1/133385 , G02F1/133528 , H04N5/7441 , H04N9/3102
摘要： For obtaining both high brightness under condition of small-sized and simplified structure and suppression of increase in temperature of liquid crystal display elements and polarizing elements, in a liquid crystal display apparatus, comprising: a liquid crystal display element 2 for converting light from a light source into display picture depending on a driving signal; an optical projection system 1b containing a first optical element 1a and for projecting said light signal toward an object of projection; exit side polarizing elements 3b; a holding member 6 for holding them with the liquid crystal display element 2; and cooling medium 5; incident side polarizing elements 3a, wherein, a space is defined by either one of the incident side polarizing elements 3a and the liquid crystal display element 2, the first optical element 1a, between the liquid crystal display element 2 and the first optical element 1a, and the holding member 6, and said space is filled up with the cooling medium 5.
摘要翻译：为了在液晶显示装置和液晶显示装置的液晶显示装置和液晶显示装置的温度升高的条件下获得高亮度，并且抑制液晶显示元件和偏振元件的温度升高，包括：液晶显示元件2，用于将来自光的光根据驱动信号将其输入显示图像; 包含第一光学元件1a并用于将所述光信号投射到投影物体的光学投影系统1b; 出射侧偏振元件3b; 用于将其保持在液晶显示元件2上的保持构件6; 和冷却介质5; 入射侧偏振元件3a，其中，由液晶显示元件2和第一光学元件1a之间的入射侧偏振元件3a和液晶显示元件2中的任一个，第一光学元件1a，和保持构件6，并且所述空间被冷却介质5填充。

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