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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
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。
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公开(公告)号：US06502942B2
公开(公告)日：2003-01-07
申请号：US09967771
申请日：2001-09-28
申请人： Shigeru Mori , Yoji Nakayama , Shigeru Inaoka , Kazunari Nakagawa
发明人： Shigeru Mori , Yoji Nakayama , Shigeru Inaoka , Kazunari Nakagawa
IPC分类号： G03B2114
CPC分类号： G03B21/625
摘要： For providing a rear-projection type display apparatus, and a translucent type sheet for use therein, in particular, using an image modulation element, such as, a liquid crystal or a DMD (Digital Micro-mirror Device), etc., dissolving the speckle disturbances, thereby obtaining a picture being high in brightness and superior in resolution (focus property) thereof, wherein the translucent type screen comprises, a Fresnel sheet (6), at least on a light exit surface of which is formed a Fresnel lens (8), and a lenticular sheet (7), at least on a light incident surface of which is formed a lenticular lens (10) for diverging the light in horizontal direction, and the Fresnel sheet contains light diffusion material (9-1) while the lenticular sheet contains diffusion material (9-2), and being constructed so as to satisfy the condition as described below: 15≦Hf·HL≦45 Hf
摘要翻译： 为了提供背投型显示装置和用于其中的半透明型片材，特别是使用诸如液晶或DMD（数字微镜装置）等图像调制元件，将 散斑干扰，从而获得亮度高和分辨率（聚焦特性）优异的图像，其中半透明型屏幕包括菲涅耳片（6），至少在光出射表面上形成菲涅尔透镜（6） 8）和透镜片（7），至少在其光入射表面上形成用于在水平方向上发散光的双凸透镜（10），并且菲涅耳片包含光漫射材料（9-1），同时 透镜片包含扩散材料（9-2），并被构造成满足如下所述的条件：其中，Hf（％）表示指示菲涅耳片中扩散材料的含量的雾度值，HL ％）指示雾霾值 的透镜片中的扩散材料的含量。
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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
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。
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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
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。
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公开(公告)号：US5808704A
公开(公告)日：1998-09-15
申请号：US367931
申请日：1995-01-03
申请人： Hiroki Yoshikawa , Takahiko Yoshida , Kiyoshi Wada , Shigeru Mori , Tetsu Ohishi , Toshimitsu Watanabe , Koji Suso , Yoshimasa Yokoyama , Akira Takahashi , Yasuhiko Komatsu , Yoshinori Matsumura , Kazunari Nakagawa , Kohsuke Ozeki , Maki Furui , Naoko Kubo , Tutomu Simada , Tohru Mori , Satoshi Ishizuka
发明人： Hiroki Yoshikawa , Takahiko Yoshida , Kiyoshi Wada , Shigeru Mori , Tetsu Ohishi , Toshimitsu Watanabe , Koji Suso , Yoshimasa Yokoyama , Akira Takahashi , Yasuhiko Komatsu , Yoshinori Matsumura , Kazunari Nakagawa , Kohsuke Ozeki , Maki Furui , Naoko Kubo , Tutomu Simada , Tohru Mori , Satoshi Ishizuka
CPC分类号： H04N9/3141 , G03B21/10 , G03B21/16 , H04N5/7408 , H04R5/02 , H04N5/642 , H04N7/0122
摘要： A rear projection type image display apparatus having an arrangement that a projection distance of a projection lens thereof is shortened and a density of mounting of parts relating to an optical system and an electric system is made higher. Furthermore, a width of a rear portion of a housing of the rear projection type image display apparatus is reduced rearwards at any position from the upper portion to the lower portion thereof, and the lower portion of a back cover is depressed inwards. Thus, a space required to install the rear projection type image display apparatus can be reduced, the rear surface of the apparatus can be disposed on a wall without any gap when the apparatus is installed along the wall, and the overall body of the apparatus can be received deep into a corner of walls when the apparatus is installed at the corner.
摘要翻译： 具有其投影透镜的投影距离缩短并且与光学系统和电气系统相关的部件的安装密度更高的背投型图像显示装置。 此外，背投影型图像显示装置的壳体的后部的宽度在从上部到下部的任何位置处向后减小，并且后盖的下部向内凹入。 因此，可以减少安装后投影型图像显示装置所需的空间，当装置沿壁安装时，可以将设备的后表面设置在没有任何间隙的壁上，并且装置的整体可以 当设备安装在角落时，深深地被收到墙壁的一角。
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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
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.
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17.发明授权公开(公告)号：US06624950B2
公开(公告)日：2003-09-23
申请号：US10142864
申请日：2002-05-13
IPC分类号： G02B300
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。
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公开(公告)号：US5946142A
公开(公告)日：1999-08-31
申请号：US764649
申请日：1996-12-11
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.
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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.
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20.发明授权公开(公告)号：US06243211B1
公开(公告)日：2001-06-05
申请号：US09495908
申请日：2000-02-02
IPC分类号： G02B300
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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