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21. 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。

22. 发明授权

US07403335B2 Screen, Fresnel lens sheet used for the same, and image display apparatus using the same 有权
标题翻译：用于其的屏幕，菲涅尔透镜片和使用其的图像显示装置
公开(公告)号：US07403335B2
公开(公告)日：2008-07-22
申请号：US11011188
申请日：2004-12-15
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/60 , G03B21/00 , G03B21/26 , G03B21/14 , G03B21/28
CPC分类号： G03B21/10 , G03B21/625
摘要： The present invention provides a screen suitable for reducing the longitudinal dimension of a set. The present invention includes two prism sections. One is a totally reflective prism section (10) provided at the image generation source side of a Fresnel lens sheet (6). The other is a refractive prism section (11) provided at the image-watching side of the Fresnel lens sheet. The refractive prism section (11) includes a refractive face (e) for refracting incident light and making the light exit toward the image-watching side, a plane (f) approximately parallel to the principal plane of the Fresnel lens sheet, and a connection face (g) for continuously forming the face (e) and the plane (f).
摘要翻译：本发明提供了一种适于减小组的纵向尺寸的屏幕。本发明包括两个棱镜部分。一个是设置在菲涅耳透镜片（6）的图像生成源侧的全反射棱镜部（10）。另一个是设置在菲涅尔透镜片的图像观看侧的折射棱镜部分（11）。折射棱镜部分（11）包括用于折射入射光并使光从摄像侧射出的折射面（e），大致平行于菲涅尔透镜片的主平面的平面（f），以及连接面（g）用于连续地形成面（e）和平面（f）。

23. 发明授权

US07095558B2 Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet 有权
标题翻译：图像显示装置，图像显示装置中使用的背投型屏幕，菲涅耳透镜片，以及制造菲涅尔透镜片的方法
公开(公告)号：US07095558B2
公开(公告)日：2006-08-22
申请号：US10857647
申请日：2004-05-28
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/60 , G03B21/28 , G02B3/08 , G02B5/04
CPC分类号： G03B21/60
摘要： A total reflecting prism portion is formed on an image generation source side of a Fresnel lens sheet which constitutes a rear projection type screen. The total reflecting prism portion is formed in an area in which the angle of incidence of a projection image projected from an optical part on the Fresnel lens sheet is at least about 40·. The total reflecting prism portion causes incident light to be outputted as output light at a predetermined output angle by a total reflection phenomenon after a first refraction phenomenon. A refracting prism portion is formed on an image monitoring side of the Fresnel lens sheet. The refracting prism portion is formed in an area opposed to the portion where the total reflecting prism portion is not formed. The refracting prism portion causes incident light to be outputted as output light at a predetermined output angle by a second refraction phenomenon.
摘要翻译：全反射棱镜部分形成在构成背投式屏幕的菲涅尔透镜片的图像产生源侧上。全反射棱镜部分形成在从菲涅尔透镜片上的光学部件投影的投影图像的入射角至少为40°的区域中。总反射棱镜部分使入射光输出为输出以第一折射现象之后的全反射现象以预定的输出角度发光。折射棱镜部分形成在菲涅尔透镜片的图像监视侧。折射棱镜部分形成在与未形成全反射棱镜部分的部分相对的区域中。折射棱镜部分使入射光作为输出光以预定的输出角输出第二折射现象。

24. 发明申请

US20060001966A1 Screen, fresnel lens sheet used therefor, and image display apparatus using the same 有权
标题翻译：用于此的屏幕，菲涅尔透镜片和使用其的图像显示装置
公开(公告)号：US20060001966A1
公开(公告)日：2006-01-05
申请号：US11065292
申请日：2005-02-25
申请人： Tetsu Ohishi , Hiroki Yoshikawa , Koji Hirata , Daisuke Imafuku
发明人： Tetsu Ohishi , Hiroki Yoshikawa , Koji Hirata , Daisuke Imafuku
IPC分类号： G02F1/1335
CPC分类号： G02B3/005 , G02B3/08 , G02B5/0231 , G02B5/0242 , G02B5/0278 , G02B5/045 , G03B21/10 , G03B21/625
摘要： Images that are bright even on the periphery of a transmissive screen are obtained by reducing reflection loss of the screen when the screen incident angle of the image light entering the upper left and right ends of the screen increases. Incident-side prisms (10), each having at least a plane-of-incidence (c) onto which light comes in, an exit face (d) from which the light that has come in from the plane-of-incidence exits after being refracted, and a refractive face (e) on which the light that has exited from the exit face is refracted and then guided to the image-viewing side of the Fresnel lens sheet (6), are provided in the range where the incident angle of the incoming light becomes equal to or greater than approximately 40 degrees.
摘要翻译：当透过屏幕的周围的图像光线进入屏幕的左上端和右端的屏幕入射角增加时，通过减少屏幕的反射损失来获得甚至在透射屏幕周边的亮度的图像。每个入射侧棱镜（10）至少具有入射平面（c），光入射到其上，出射面（d）从入射面入射的光从该入射面被折射，并且其中从出射面退出的光被折射并导引到菲涅尔透镜片（6）的图像观看侧的折射面（e）设置在入射角的入射光变得等于或大于约40度。

25. 发明授权

US07581838B2 Optical projector and image display apparatus using the same 有权
标题翻译：光学投影仪及使用其的图像显示装置
公开(公告)号：US07581838B2
公开(公告)日：2009-09-01
申请号：US11833855
申请日：2007-08-03
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/14
CPC分类号： G02B27/48 , G03B21/005
摘要： Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to reduce speckle noise. In an optical projector, a viewing angle enlarging ember (60) for enlarging viewing angle or a scattering member (28) for scattering image light is disposed near an image display device (18), such as a liquid crystal panel. Speckle noise can be reduced, suppressing the deterioration of resolution and contrast.
摘要翻译：当图像发生器具有小的有效屏幕尺寸并且投影透镜具有小的有效直径时，发生称为斑点噪声的图像干扰。本发明旨在减少斑点噪声。在光学投影仪中，在诸如液晶面板的图像显示装置（18）附近设置用于放大视角的观察角度放大余烬（60）或用于散射图像光的散射构件（28）。可以减少斑点噪音，抑制分辨率和对比度的恶化。

26. 发明授权

US07261421B2 Optical projector and image display apparatus using the same 有权
标题翻译：光学投影仪及使用其的图像显示装置
公开(公告)号：US07261421B2
公开(公告)日：2007-08-28
申请号：US10922706
申请日：2004-08-20
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/14
CPC分类号： G02B27/48 , G03B21/005
摘要： Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to reduce speckle noise. In an optical projector, a viewing angle enlarging ember (60) for enlarging viewing angle or a scattering member (28) for scattering image light is disposed near an image display device (18), such as a liquid crystal panel. Speckle noise can be reduced, suppressing the deterioration of resolution and contrast.
摘要翻译：当图像发生器具有小的有效屏幕尺寸并且投影透镜具有小的有效直径时，发生称为斑点噪声的图像干扰。本发明旨在减少斑点噪声。在光学投影仪中，在诸如液晶面板的图像显示装置（18）附近设置用于放大视角的观察角度放大余烬（60）或用于散射图像光的散射构件（28）。可以减少斑点噪音，抑制分辨率和对比度的恶化。

27. 发明申请

US20050046939A1 Image display device, rear projection type screen used in image display device, fresnel lens sheet, and method of making fresnel lens sheet 有权
标题翻译：图像显示装置，图像显示装置中使用的背投型屏幕，菲涅耳透镜片，以及制造菲涅尔透镜片的方法
公开(公告)号：US20050046939A1
公开(公告)日：2005-03-03
申请号：US10857647
申请日：2004-05-28
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G02B3/08 , G03B21/60 , G03B21/62
CPC分类号： G03B21/60
摘要： A total reflecting prism portion is formed on an image generation source side of a Fresnel lens sheet which constitutes a rear projection type screen. The total reflecting prism portion is formed in an area in which the angle of incidence of a projection image projected from an optical part on the Fresnel lens sheet is at least about 40°. The total reflecting prism portion causes incident light to be outputted as output light at a predetermined output angle by a total reflection phenomenon after a first refraction phenomenon. A refracting prism portion is formed on an image monitoring side of the Fresnel lens sheet. The refracting prism portion is formed in an area opposed to the portion where the total reflecting prism portion is not formed. The refracting prism portion causes incident light to be outputted as output light at a predetermined output angle by a second refraction phenomenon.
摘要翻译：全反射棱镜部分形成在构成背投式屏幕的菲涅尔透镜片的图像产生源侧上。全反射棱镜部分形成在从菲涅尔透镜片上的光学部件投射的投影图像的入射角至少为40°的区域中。总反射棱镜部分使得入射光以第一折射现象之后的全反射现象以预定的输出角输出为输出光。折射棱镜部分形成在菲涅尔透镜片的图像监视侧。折射棱镜部分形成在与未形成全反射棱镜部分的部分相对的区域中。折射棱镜部分使入射光作为输出光以预定的输出角输出第二折射现象。

28. 发明授权

US07697202B2 Screen, fresnel lens sheet used for the same, and image display apparatus using the same 失效
标题翻译：用于其的屏幕，菲涅尔透镜片和使用其的图像显示装置
公开(公告)号：US07697202B2
公开(公告)日：2010-04-13
申请号：US12103241
申请日：2008-04-15
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/60 , G03B21/56 , G02B5/04
CPC分类号： G03B21/625
摘要： An image display apparatus includes an image generation source, optics for projecting in an enlarged form the image generated by the image generation source, and a transmissive screen for displaying the image projected from said optics. The transmissive screen includes a Fresnel lens sheet disposed at an image generation source side, and a diffusing sheet disposed at an image-watching side in order to diffuse image light at least in a horizontal direction of the screen. The Fresnel lens sheet has a plurality of entrance-side prisms formed at the image generation source side, and a plurality of exit-side prisms formed at the image-watching side, and the Fresnel lens sheet emits lights in a first direction and a second direction. The first direction is almost parallel to a central axis of the Fresnel lens sheet, and the second direction extends toward the central axis.
摘要翻译：图像显示装置包括图像生成源，用于以放大的形式投影由图像生成源生成的图像的光学器件和用于显示从所述光学器件投影的图像的透射屏幕。透射屏幕包括设置在图像产生源侧的菲涅尔透镜片和设置在图像观看侧的扩散片，以至少在屏幕的水平方向上扩散图像光。菲涅尔透镜片具有形成在图像产生源侧的多个入射侧棱镜和形成在图像观看侧的多个出射侧棱镜，并且菲涅耳透镜片在第一方向上发光，而第二方向。第一方向几乎平行于菲涅尔透镜片的中心轴线，第二方向朝向中心轴线延伸。

29. 发明授权

US07436593B2 Screen, fresnel lens sheet used therefor, and image display apparatus using the same 有权
标题翻译：用于此的屏幕，菲涅尔透镜片和使用其的图像显示装置
公开(公告)号：US07436593B2
公开(公告)日：2008-10-14
申请号：US11065292
申请日：2005-02-25
申请人： Tetsu Ohishi , Hiroki Yoshikawa , Koji Hirata , Daisuke Imafuku
发明人： Tetsu Ohishi , Hiroki Yoshikawa , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/56 , G03B21/60
CPC分类号： G02B3/005 , G02B3/08 , G02B5/0231 , G02B5/0242 , G02B5/0278 , G02B5/045 , G03B21/10 , G03B21/625
摘要： Images that are bright even on the periphery of a transmissive screen are obtained by reducing reflection loss of the screen when the screen incident angle of the image light entering the upper left and right ends of the screen increases. Incident-side prisms (10), each having at least a plane-of-incidence (c) onto which light comes in, an exit face (d) from which the light that has come in from the plane-of-incidence exits after being refracted, and a refractive face (e) on which the light that has exited from the exit face is refracted and then guided to the image-viewing side of the Fresnel lens sheet (6), are provided in the range where the incident angle of the incoming light becomes equal to or greater than approximately 40 degrees.
摘要翻译：当透过屏幕的周围的图像光线进入屏幕的左上端和右端的屏幕入射角增加时，通过减少屏幕的反射损失来获得甚至在透射屏幕周边的亮度的图像。每个入射侧棱镜（10）至少具有入射平面（c），光入射到其上，出射面（d）从入射面入射的光从该入射面被折射，并且其中从出射面退出的光被折射并导引到菲涅尔透镜片（6）的图像观看侧的折射面（e）设置在入射角的入射光变得等于或大于约40度。

30. 发明申请

US20060256433A1 Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet 有权
标题翻译：图像显示装置，图像显示装置中使用的背投型屏幕，菲涅耳透镜片，以及制造菲涅尔透镜片的方法
公开(公告)号：US20060256433A1
公开(公告)日：2006-11-16
申请号：US11486830
申请日：2006-07-14
申请人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/56
CPC分类号： G03B21/60
摘要： A total reflecting prism portion is formed on an image generation source side of a Fresnel lens sheet which constitutes a rear projection type screen. The total reflecting prism portion is formed in an area in which the angle of incidence of a projection image projected from an optical part on the Fresnel lens sheet is at least about 40°. The total reflecting prism portion causes incident light to be outputted as output light at a predetermined output angle by a total reflection phenomenon after a first refraction phenomenon. Further, a refracting prism portion is formed on an image monitoring side of the Fresnel lens sheet. The refracting prism portion is formed in an area opposed to the portion where the total reflecting prism portion is not formed. The refracting prism portion causes incident light to be outputted as output light at a predetermined output angle by a second refraction phenomenon.
摘要翻译：全反射棱镜部分形成在构成背投式屏幕的菲涅尔透镜片的图像产生源侧上。全反射棱镜部分形成在从菲涅尔透镜片上的光学部件投射的投影图像的入射角至少为40°的区域中。总反射棱镜部分使得入射光以第一折射现象之后的全反射现象以预定的输出角输出为输出光。此外，折射棱镜部分形成在菲涅耳透镜片的图像监视侧。折射棱镜部分形成在与未形成全反射棱镜部分的部分相对的区域中。折射棱镜部分使入射光作为输出光以预定的输出角输出第二折射现象。

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