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1. 发明授权

US5659424A Projecting lens and image display device 失效
标题翻译：投影镜头和图像显示装置
公开(公告)号：US5659424A
公开(公告)日：1997-08-19
申请号：US241633
申请日：1994-05-12
申请人： Atsuo Osawa , Hiroki Yoshikawa , Shigeru Mori , Naoyuki Ogura
发明人： Atsuo Osawa , Hiroki Yoshikawa , Shigeru Mori , Naoyuki Ogura
IPC分类号： G02B9/60 , G02B13/18 , G02B13/24 , G02B3/00
CPC分类号： G02B9/60 , G02B13/18 , G02B13/24
摘要： An image display device which is compact on the whole and low in cost, and which uses a plurality of projection lens systems each of which is constituted by five lens groups including a first aspherical lens group, a second aspherical lens group, a third biconvex lens group, a fourth aspherical lens group and a fifth aspherical lens group which are arranged in this order successively from a screen side, the third lens group having refractive power of not lower than 70% of the total power of the projection lens system, the respective peripheral shapes of the first and second aspherical lens groups being set to have a predetermined relation, a low-dispersion high-index glass material being used for a convex lens of a green projection lens system, a high-dispersion high-index glass material being used for convex lenses of blue and red projection lens systems.
摘要翻译：一种整体紧凑且成本低的图像显示装置，其使用多个投影透镜系统，每个投影透镜系统由包括第一非球面透镜组，第二非球面透镜组，第三双凸透镜的五个透镜组构成组，第四非球面透镜组和第五非球面透镜组，其从屏幕侧依次排列，第三透镜组的折射力不小于投影透镜系统的总功率的70％，折射率不小于投影透镜系统的总功率的70％第一非球面透镜组和第二非球面透镜组的周边形状被设定为具有预定关系，低分散高折射率玻璃材料用于绿色投影透镜系统的凸透镜，高分散高折射率玻璃材料为用于蓝色和红色投影透镜系统的凸透镜。

2. 发明授权

US6130786A Projection lens and image display device 有权
标题翻译：投影镜头和图像显示装置
公开(公告)号：US6130786A
公开(公告)日：2000-10-10
申请号：US340141
申请日：1999-06-28
申请人： Atsuo Osawa , Hiroki Yoshikawa , Shigeru Mori , Naoyuki Ogura
发明人： Atsuo Osawa , Hiroki Yoshikawa , Shigeru Mori , Naoyuki Ogura
IPC分类号： G02B9/60 , G02B13/18 , G02B13/24 , G02B3/00
CPC分类号： G02B9/60 , G02B13/18 , G02B13/24
摘要： An image display device which is compact on the whole and low in cost, and which uses a plurality of projection lens systems each of which is constituted by five lens groups including a first aspherical lens group, a second aspherical lens group, a third biconvex lens group, a fourth aspherical lens group and a fifth aspherical lens group which are arranged in this order successively from a screen side, the third lens group having refractive power of not lower than 70% of the total power of the projection lens system, the respective peripheral shapes of the first and second aspherical lens groups being set to have a predetermined relation, a low-dispersion high-index glass material being used for a convex lens of a green projection lens system, a high-dispersion high-index glass material being used for convex lenses of blue and red projection lens systems.
摘要翻译：一种整体紧凑且成本低的图像显示装置，其使用多个投影透镜系统，每个投影透镜系统由包括第一非球面透镜组，第二非球面透镜组，第三双凸透镜的五个透镜组构成组，第四非球面透镜组和第五非球面透镜组，其从屏幕侧依次排列，第三透镜组的折射力不小于投影透镜系统的总功率的70％，折射率不小于投影透镜系统的总功率的70％第一非球面透镜组和第二非球面透镜组的周边形状被设定为具有预定关系，低分散高折射率玻璃材料用于绿色投影透镜系统的凸透镜，高分散高折射率玻璃材料为用于蓝色和红色投影透镜系统的凸透镜。

3. 发明授权

US5933280A Projection lens and image display device 失效
公开(公告)号：US5933280A
公开(公告)日：1999-08-03
申请号：US844311
申请日：1997-04-10
申请人： Atsuo Osawa , Hiroki Yoshikawa , Shigeru Mori , Naoyuki Ogura
发明人： Atsuo Osawa , Hiroki Yoshikawa , Shigeru Mori , Naoyuki Ogura
IPC分类号： G02B9/60 , G02B13/18 , G02B13/24 , G02B3/00 , G02B3/02
CPC分类号： G02B9/60 , G02B13/18 , G02B13/24
摘要： An image display device which is compact on the whole and low in cost, and which uses a plurality of projection lens systems each of which is constituted by five lens groups including a first aspherical lens group, a second aspherical lens group, a third biconvex lens group, a fourth aspherical lens group and a fifth aspherical lens group which are arranged in this order successively from a screen side, the third lens group having refractive power of not lower than 70% of the total power of the projection lens system, the respective peripheral shapes of the first and second aspherical lens groups being set to have a predetermined relation, a low-dispersion high-index glass material being used for a convex lens of a green projection lens system, a high-dispersion high-index glass material being used for convex lenses of blue and red projection lens systems.

4. 发明授权

US5926153A Multi-display apparatus 失效
标题翻译：多显示设备
公开(公告)号：US5926153A
公开(公告)日：1999-07-20
申请号：US592177
申请日：1996-01-26
申请人： Tetsu Ohishi , Takahiko Yoshida , Hiroki Yoshikawa , Yutaka Matsuda , Hideo Tanide , Shigeru Mori , Atsuo Osawa , Koji Hirata
发明人： Tetsu Ohishi , Takahiko Yoshida , Hiroki Yoshikawa , Yutaka Matsuda , Hideo Tanide , Shigeru Mori , Atsuo Osawa , Koji Hirata
IPC分类号： G03B21/62 , G03B21/10 , G09B9/32 , H04N5/74 , B09G5/00
CPC分类号： G09B9/32
摘要： A multi-display apparatus includes a plurality of rear projection-type display devices each in which projection light from image sources is projected through projection lenses onto a rear projection surface of a rear projection screen to form a picture image on a front viewing surface of the rear projection screen, the plurality of rear projection-type display devices being combined together in contiguous relation to one another to form a large screen. An overall front viewing surface of the large screen is formed into a concave surface curved both in a horizontal visibility angle direction and a vertical visibility angle direction. A light-absorbing portion is formed on the front viewing surface of the rear projection screen, and the light-absorbing portion absorbs projection light which passes through one rear projection screen, and is incident as external light on another rear projection screen, thereby preventing a picture image from being degraded.
摘要翻译：多显示装置包括多个后投影式显示装置，每个背投影型显示装置，其中来自图像源的投影光通过投影透镜投射到背投屏幕的后投影表面上，以在前投影屏幕的前视面上形成图像背投影屏幕，多个后投影式显示装置彼此连续地组合在一起形成大屏幕。大屏幕的整体前视面形成为在水平可视角度方向和垂直视角方向上均弯曲的凹面。在后投影屏幕的前视面形成有吸光部，吸光部吸收通过一个背面投影用屏幕的投影光，作为外部光入射到另一个后投影屏上，从而防止图片图像降级。

5. 发明申请

US20050001970A1 Liquid crystal display apparatus and optical device for use therein 审中-公开
标题翻译：液晶显示装置及其中使用的光学装置
公开(公告)号：US20050001970A1
公开(公告)日：2005-01-06
申请号：US10898978
申请日：2004-07-27
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： G02F1/1333 , G02F1/13 , G02F1/133 , G02F1/1335 , G03B21/16 , H04N5/74 , H04N9/31
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。

6. 发明授权

US06624950B2 Projection lens system and projection image display apparatus using the same 失效
标题翻译：投影透镜系统和使用其的投影图像显示装置
公开(公告)号：US06624950B2
公开(公告)日：2003-09-23
申请号：US10142864
申请日：2002-05-13
申请人： Koji Hirata , Naoyuki Ogura , Shigeru Mori , Takahiro Yoshida , Kazunari Nakagawa
发明人： Koji Hirata , Naoyuki Ogura , Shigeru Mori , Takahiro Yoshida , Kazunari Nakagawa
IPC分类号： G02B300
CPC分类号： G02B13/06 , H04N5/74
摘要： A projection lens system for enlarging and displaying on a screen an original image from an image generating source, includes a first lens having positive refractive power, a second aberration correction lens, and a third lens, positioned nearest the image generating source and having a concave lens surface thereof facing the screen. The third lens has a profile such that its refractive power at a marginal area adjacent a peripheral edge thereof is less than its refractive power at an area adjacent an optical axis of said projection lens system. The surface of the third lens facing the image generating source is in contact with a cooling liquid which cools the image generating source.
摘要翻译：一种投影透镜系统，用于从屏幕上放大和显示来自图像产生源的原始图像，包括具有正屈光力的第一透镜，第二像差校正透镜和第三透镜，其位于最靠近图像生成源的位置并具有凹入其透镜表面面向屏幕。第三透镜具有轮廓，使得其邻近其周缘的边缘区域的屈光力小于在与所述投影透镜系统的光轴相邻的区域处的屈光力。面对图像发生源的第三透镜的表面与冷却图像生成源的冷却液接触。

7. 发明授权

US5946142A Projection lens system and projection image display apparatus using the same 失效
公开(公告)号：US5946142A
公开(公告)日：1999-08-31
申请号：US764649
申请日：1996-12-11
申请人： Koji Hirata , Naoyuki Ogura , Shigeru Mori , Takahiro Yoshida , Kazunari Nakagawa
发明人： Koji Hirata , Naoyuki Ogura , Shigeru Mori , Takahiro Yoshida , Kazunari Nakagawa
IPC分类号： G02B13/06 , H04N5/74 , G02B3/00 , G02B3/02
CPC分类号： G02B13/06 , H04N5/74
摘要： When a projection lens system used for a rear projection type image display apparatus has a first lens group having an aspherical lens surface, a second lens group, a third lens group sharing almost all the positive refractive power of the overall system, a fourth lens group having an aspherical lens surface, a fifth lens group, and a sixth lens group including a lens having a profile of aspherical surface in which the concave surface thereof faces the screen side and the refractive power in the marginal area is weaker than the refractive power around the optical axis, a projection lens system having a large aperture ratio (low F-number), high focus, wide field angle, and sufficient marginal light amount ratio can be realized at a low cost. When a predetermined opening portion is formed in the projection lens and lens barrel, the lens elements are cooled by air suction and exhaust and the lowering of the lens performance due to temperature change can be prevented. When a flange is arranged in a suitable location of the opening portion, entry of a foreign material from the opening portion and light leakage from the inside are prevented and the contrast performance of the projection type image display apparatus can be prevented from lowering.

8. 发明授权

US06542308B2 Projection display apparatus and projection lens device for use therein 有权
公开(公告)号：US06542308B2
公开(公告)日：2003-04-01
申请号：US09923371
申请日：2001-08-08
申请人： Koji Hirata , Shigeru Mori , Naoyuki Ogura , Yasuo Otsuka
发明人： Koji Hirata , Shigeru Mori , Naoyuki Ogura , Yasuo Otsuka
IPC分类号： G02B300
CPC分类号： G02B27/148 , G02B9/12 , G02B13/16
摘要： A projection display apparatus having a light source for generating a white light, a liquid crystal panel for modulating an incident light from the light source, a polarizing plate which is located at a light exiting side of the liquid crystal panel for polarizing a light from the liquid crystal panel passed therethrough and a cooling liquid for cooling at least the liquid crystal panel and the polarizing plate. A projection lens device having plural lens elements which is located at a light exiting side of the polarizing plate is provided for projecting the light passed through the polarizing plate. One of the plural lens elements located nearest the polarizing plate has a negative refractive power in a center region containing an optical axis thereof and has a positive refractive power in a peripheral portion of the center region.

9. 发明授权

US06256083B1 Liquid crystal display apparatus and optical device for use therein 有权
标题翻译：液晶显示装置及其中使用的光学装置
公开(公告)号：US06256083B1
公开(公告)日：2001-07-03
申请号：US09168921
申请日：1998-10-08
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： G02F11335
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 size and simplified structure, and for achieving suppression of increase in temperature of liquid crystal display elements and polarizing elements in a liquid crystal display apparatus, a liquid crystal display element converts light from a light source into a display picture depending on a driving signal, and an optical projection system contains a first optical element and projects a light signal toward an object of projection. A space is defined by an incident side polarizing element or the liquid crystal display element, the first optical element and a holding member, and the space is filled up with a cooling medium.
摘要翻译：为了在小尺寸和简化结构的条件下获得高亮度，并且为了在液晶显示装置中实现液晶显示元件和偏振元件的温度升高抑制，液晶显示元件将来自光源的光转换成根据驱动信号显示图像，并且光学投影系统包含第一光学元件并将光信号投射到投射对象。空间由入射侧偏振元件或液晶显示元件，第一光学元件和保持构件限定，并且空间填充有冷却介质。

10. 发明授权

US06243211B1 Projection lens system and projection image display apparatus using the same 失效
标题翻译：投影透镜系统和使用其的投影图像显示装置
公开(公告)号：US06243211B1
公开(公告)日：2001-06-05
申请号：US09495908
申请日：2000-02-02
申请人： Koji Hirata , Naoyuki Ogura , Shigeru Mori , Takahiro Yoshida , Kazunari Nakagawa
发明人： Koji Hirata , Naoyuki Ogura , Shigeru Mori , Takahiro Yoshida , Kazunari Nakagawa
IPC分类号： G02B300
CPC分类号： G02B13/06 , H04N5/74
摘要： When a projection lens system used for a rear projection type image display apparatus has a first lens group having an aspherical lens surface, a second lens group, a third lens group sharing almost all the positive refractive power of the overall system, a fourth lens group having an aspherical lens surface, a fifth lens group, and a sixth lens group including a lens having a profile of aspherical surface in which the concave surface thereof faces the screen side and the refractive power in the marginal area is weaker than the refractive power around the optical axis, a projection lens system having a large aperture ratio (low F-number), high focus, wide field angle, and sufficient marginal light amount ratio can be realized at a low cost. When a predetermined opening portion is formed in the projection lens and lens barrel, the lens elements are cooled by air suction and exhaust and the lowering of the lens performance due to temperature change can be prevented. When a flange is arranged in a suitable location of the opening portion, entry of a foreign material from the opening portion and light leakage from the inside are prevented and the contrast performance of the projection type image display apparatus can be prevented from lowering.
摘要翻译：当用于背投型图像显示装置的投影透镜系统具有具有非球面透镜表面的第一透镜组，第二透镜组，共享整个系统的几乎全部正折射力的第三透镜组时，第四透镜组具有非球面透镜表面，第五透镜组和第六透镜组，所述第六透镜组包括具有非球面形状的透镜，其中凹面朝向屏幕侧，并且边缘区域中的折光力弱于周围的折光力可以以低成本实现光轴，具有大开口率（低F值），高焦距，宽视野角和足够的边缘光量比的投影透镜系统。当在投影透镜和透镜镜筒中形成预定的开口部分时，透镜元件通过吸气和排气被冷却，并且可以防止由于温度变化引起的透镜性能的降低。当凸缘布置在开口部分的适当位置时，防止异物从开口部分进入并从内部漏光，并且可以防止突起型图像显示装置的对比度性能降低。

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