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1. 发明授权

US07961400B2 Projecting optical unit and projecting type image display apparatus therewith 有权
标题翻译：投影光学单元和投影型图像显示装置
公开(公告)号：US07961400B2
公开(公告)日：2011-06-14
申请号：US12536163
申请日：2009-08-05
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G02B9/00 , G02B17/00
CPC分类号： G02B17/0852
摘要： A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.
摘要翻译：公开了一种投影图像显示装置，其中当图像被放大并倾斜地投影到屏幕上时，限制了梯形失真和/或像差。图像发生器以这样的方式连接到光学系统基座，使得至少其相对于垂直线（在X轴上平行的轴线）的倾斜度及其在前后方向（Z轴方向）上的距离可以通过调整机构进行调整。此外，作为第一光学系统的投影透镜2和作为第二光学系统的自由曲面镜被固定到光学系统基座。自由曲面镜在相对于自由曲面镜的大致中心处的垂直线是可旋转的（在平行于X轴的旋转轴上）。

2. 发明授权

US07670007B2 Projection display, projection optical system and transmission lens or free curved lens 有权
标题翻译：投影显示，投影光学系统和透镜或自由曲面透镜
公开(公告)号：US07670007B2
公开(公告)日：2010-03-02
申请号：US11473087
申请日：2006-06-23
申请人： Takanori Hisada , Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Takanori Hisada , Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/14 , G03B21/28 , G02B7/02
CPC分类号： G03B21/10 , G02B3/02 , G02B13/16 , G02B13/18 , G02B27/0025 , G03B21/147 , G03B21/28
摘要： A projection display is capable of suppressing both the trapezoidal distortion of an enlarged image projected on a screen by oblique projection and aberrations resulting from oblique projection and includes a projection optical system provided with lenses that can be easily manufactured and assembled. The projection optical system for obliquely projecting an image formed by a display device on the screen includes a free curved lens having a rotationally asymmetric free curved surface. The free curved lens has fringing parts having outlines of a shape coinciding with an arc of a circle having the center on the optical axis of the free curved lens.
摘要翻译：投影显示器能够通过倾斜投影和由倾斜投影产生的像差来抑制投影在屏幕上的放大图像的梯形失真，并且包括具有容易制造和组装的透镜的投影光学系统。用于将由显示装置形成的图像倾斜投影在屏幕上的投影光学系统包括具有旋转非对称自由曲面的自由曲面透镜。自由弯曲透镜具有边缘部分，其具有与具有在自由曲面透镜的光轴上的中心的圆弧重合的形状轮廓。

3. 发明申请

US20060227432A1 Projecting optical unit and projecting type image display apparatus therewith 有权
标题翻译：投影光学单元和投影型图像显示装置
公开(公告)号：US20060227432A1
公开(公告)日：2006-10-12
申请号：US11280821
申请日：2005-11-17
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G02B17/00
CPC分类号： G02B17/0852
摘要： The invention provides a projection image display device in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen and an assembling and adjusting are easily done, and a projection optical unit usable for the device. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.
摘要翻译：本发明提供了一种投影图像显示装置，其中当图像被放大并倾斜投影到屏幕上并且容易地进行组装和调整时，其中抑制了梯形失真和/或像差，以及可用于该装置的投影光学单元。图像发生器以这样的方式连接到光学系统基座，使得至少其相对于垂直线（在X轴上平行的轴线）的倾斜度及其在前后方向（Z轴方向）上的距离可以通过调整机构进行调整。此外，作为第一光学系统的投影透镜2和作为第二光学系统的自由曲面镜被固定到光学系统基座。自由曲面镜在相对于自由曲面镜的大致中心处的垂直线是可旋转的（在平行于X轴的旋转轴上）。

4. 发明申请

US20070103604A1 Projection type image display 失效
标题翻译：投影型图像显示
公开(公告)号：US20070103604A1
公开(公告)日：2007-05-10
申请号：US11592176
申请日：2006-11-03
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： H04N5/74
CPC分类号： G03B21/10 , G03B21/147 , G03B21/28 , H04N5/74
摘要： An image that has been displayed on the display screen of an image generator 1 is first passed through a projection lens section 2 consisting of a front group and a rear group. Next after being reflected on the reflecting surface of a free-form surface mirror 5, the image is further reflected by a planar reflecting mirror 4 and then obliquely projected from the lower section of a projection screen 3 onto the screen 3. The front group of the projection lens section 2 is provided for enlarging the image. In order to correct aberration due to oblique projection onto the projection screen, the rear group uses a free-form surface lens that forms a concave shape with respect to the exit side of light from the lens. The free-form surface mirror 5 corrects trapezoidal distortion due to oblique projection onto the projection screen. The free-form surface lens in the rear group of the projection lens section 2 can accommodate changes in environmental conditions by using one edge as a reference edge and rendering the other edge expandable. The free-form surface mirror can likewise use one edge as a reference edge and render the other edge expandable. For adjustment, the free-form surface mirror can also be pivoted about the reference edge.
摘要翻译：在图像生成器1的显示画面上显示的图像首先通过由前组和后组构成的投影透镜部2。接下来，在自由曲面镜5的反射面上反射后，图像被平面反射镜4进一步反射，然后从投影屏3的下部倾斜地突出到屏幕3上。投影透镜部分2的前组被设置用于放大图像。为了校正由于倾斜投影到投影屏幕上的像差，后组使用相对于来自透镜的光的出射侧形成凹形的自由曲面透镜。自由曲面镜5校正由于倾斜投影到投影屏幕上的梯形变形。投影透镜部2的后组中的自由曲面透镜可以通过使用一个边缘作为参考边缘并使另一个边缘可扩展来适应环境条件的变化。自由曲面镜同样可以使用一个边缘作为参考边缘，并使另一个边缘可扩展。为了调整，自由曲面反射镜也可围绕参考边缘枢转。

5. 发明授权

US08169708B2 Projecting optical unit and projecting type image display apparatus therewith 有权
标题翻译：投影光学单元和投影型图像显示装置
公开(公告)号：US08169708B2
公开(公告)日：2012-05-01
申请号：US13099784
申请日：2011-05-03
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G02B9/00 , G02B17/00
CPC分类号： G02B17/0852
摘要： A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.
摘要翻译：公开了一种投影图像显示装置，其中当图像被放大并倾斜地投影到屏幕上时，限制了梯形失真和/或像差。图像发生器以这样的方式连接到光学系统基座，使得至少其相对于垂直线（在X轴上平行的轴线）的倾斜度及其在前后方向（Z轴方向）上的距离可以通过调整机构进行调整。此外，作为第一光学系统的投影透镜2和作为第二光学系统的自由曲面镜被固定到光学系统基座。自由曲面镜在相对于自由曲面镜的大致中心处的垂直线是可旋转的（在平行于X轴的旋转轴上）。

6. 发明授权

US07586687B2 Projecting optical unit and projecting type image display apparatus therewith 有权
标题翻译：投影光学单元和投影型图像显示装置
公开(公告)号：US07586687B2
公开(公告)日：2009-09-08
申请号：US11280821
申请日：2005-11-17
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G02B9/00 , G02B17/00
CPC分类号： G02B17/0852
摘要： A projection image display device is disclosed in which a trapezoidal distortion and/or aberration are restrained when an image is enlarged and projected obliquely onto a screen. An image generator is connected to an optical system base in such a manner that at least an inclination thereof (on an axis parallel to X axis) with respect to a vertical line and a distance thereof in forward and backward direction (Z axis direction) can be adjusted by an adjusting mechanism. Further, a projecting lens 2 as a first optical system and a free-form curved surface mirror as a second optical system are fixed to the optical system base. The free-form curved surface mirror is rotatable (on an rotary axis parallel to X axis) with respect to the vertical line at a substantial center of the free-form curved surface mirror.
摘要翻译：公开了一种投影图像显示装置，其中当图像被放大并倾斜地投影到屏幕上时，限制了梯形失真和/或像差。图像发生器以这样的方式连接到光学系统基座，使得至少其相对于垂直线（在X轴上平行的轴线）的倾斜度及其在前后方向（Z轴方向）上的距离可以通过调整机构进行调整。此外，作为第一光学系统的投影透镜2和作为第二光学系统的自由曲面镜被固定到光学系统基座。自由曲面镜在相对于自由曲面镜的大致中心处的垂直线是可旋转的（在平行于X轴的旋转轴上）。

7. 发明授权

US07535648B2 Projection type image display 失效
标题翻译：投影型图像显示
公开(公告)号：US07535648B2
公开(公告)日：2009-05-19
申请号：US11592176
申请日：2006-11-03
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/28 , G02B3/00 , G02B9/00
CPC分类号： G03B21/10 , G03B21/147 , G03B21/28 , H04N5/74
摘要： An image that has been displayed on the display screen of an image generator is first passed through a projection lens section consisting of a front group and a rear group. Next after being reflected on the reflecting surface of a free-form surface mirror, the image is further reflected by a planar reflecting mirror and then obliquely projected from the lower section of a projection screen onto the screen. The front group of the projection lens section is provided for enlarging the image. In order to correct aberration due to oblique projection onto the projection screen, the rear group uses a free-form surface lens that forms a concave shape with respect to the exit side of light from the lens. The free-form surface mirror corrects trapezoidal distortion due to oblique projection onto the projection screen. The free-form surface lens in the rear group of the projection lens section can accommodate changes in environmental conditions by using one edge as a reference edge and rendering the other edge expandable. The free-form surface mirror can likewise use one edge as a reference edge and render the other edge expandable. For adjustment, the free-form surface mirror can also be pivoted about the reference edge.
摘要翻译：在图像生成器的显示画面上显示的图像首先通过由前组和后组组成的投影透镜部。接下来，在自由形式的反射镜的反射表面上反射之后，图像被平面反射镜进一步反射，然后从投影屏幕的下部倾斜地突出到屏幕上。投影透镜部分的前组用于放大图像。为了校正由于倾斜投影到投影屏幕上的像差，后组使用相对于来自透镜的光的出射侧形成凹形的自由曲面透镜。自由曲面镜由于倾斜投影到投影屏上来校正梯形失真。投影透镜部分的后组中的自由形式的表面透镜可以通过使用一个边缘作为参考边缘并使另一个边缘可扩展来适应环境条件的变化。自由曲面镜同样可以使用一个边缘作为参考边缘，并使另一个边缘可扩展。为了调整，自由曲面反射镜也可围绕参考边缘枢转。

8. 发明申请

US20070139623A1 Projection display, projection optical system and transmission lens or free curved lens 有权
标题翻译：投影显示，投影光学系统和透镜或自由曲面透镜
公开(公告)号：US20070139623A1
公开(公告)日：2007-06-21
申请号：US11473087
申请日：2006-06-23
申请人： Takanori Hisada , Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
发明人： Takanori Hisada , Hiroki Yoshikawa , Tetsu Ohishi , Koji Hirata , Naoyuki Ogura
IPC分类号： G03B21/22
CPC分类号： G03B21/10 , G02B3/02 , G02B13/16 , G02B13/18 , G02B27/0025 , G03B21/147 , G03B21/28
摘要： A projection display is capable of suppressing both the trapezoidal distortion of an enlarged image projected on a screen by oblique projection and aberrations resulting from oblique projection and includes a projection optical system provided with lenses that can be easily manufactured and assembled. The projection optical system for obliquely projecting an image formed by a display device on the screen includes a free curved lens having a rotationally asymmetric free curved surface. The free curved lens has fringing parts having outlines of a shape coinciding with an arc of a circle having the center on the optical axis of the free curved lens.
摘要翻译：投影显示器能够通过倾斜投影和由倾斜投影产生的像差来抑制投影在屏幕上的放大图像的梯形失真，并且包括具有容易制造和组装的透镜的投影光学系统。用于将由显示装置形成的图像倾斜投影在屏幕上的投影光学系统包括具有旋转非对称自由曲面的自由曲面透镜。自由弯曲透镜具有边缘部分，其具有与具有在自由曲面透镜的光轴上的中心的圆弧重合的形状轮廓。

9. 发明授权

US07467872B2 Projection optical unit and projection type video display device using the unit 有权
标题翻译：投影光学单元和投影型视频显示设备使用该单元
公开(公告)号：US07467872B2
公开(公告)日：2008-12-23
申请号：US11258384
申请日：2005-10-26
申请人： Takanori Hisada , Hiroki Yoshikawa , Tetsu Ohishi , Masahiko Yatsu , Koji Hirata
发明人： Takanori Hisada , Hiroki Yoshikawa , Tetsu Ohishi , Masahiko Yatsu , Koji Hirata
IPC分类号： G03B21/22
CPC分类号： G03B21/10 , G02B13/16 , G02B27/0025
摘要： In the image display device, a projection lens including a plurality of lenses for enlarging an image from an image display element is constituted of a front group and a rear group. The rear group includes at least one free-shaped-surface lens including a surface having a rotationally asymmetrical shape. Furthermore, the device includes at least one free-shaped-surface mirror having a rotationally asymmetrical reflection surface. Accordingly, a set can be formed to be compact while correcting trapezoidal distortion and aberration.
摘要翻译：在图像显示装置中，包括用于从图像显示元件放大图像的多个透镜的投影透镜由前组和后组构成。后组包括至少一个具有旋转不对称形状的表面的自由形状的透镜。此外，该装置包括至少一个具有旋转不对称反射表面的自由形状的反射镜。因此，可以在校正梯形失真和像差的同时形成一个组合。

10. 发明申请

US20070002281A1 Projection screen and image display apparatus 审中-公开
标题翻译：投影屏幕和图像显示设备
公开(公告)号：US20070002281A1
公开(公告)日：2007-01-04
申请号：US11450677
申请日：2006-06-09
申请人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
发明人： Hiroki Yoshikawa , Takanori Hisada , Tetsu Ohishi , Koji Hirata , Daisuke Imafuku
IPC分类号： G03B21/14
CPC分类号： G03B21/10 , G03B21/625
摘要： A fresnel lens sheet has a fresnel center in the vicinity of a lower end, and includes first and second fresnel lens portions respectively formed into concentrically circular shapes. The first fresnel lens portion exists inside a reference circumference, and the second fresnel lens portion exists outside the reference circumference. A conjugate point distance of the second fresnel lens portion is shorter than a conjugate point distance of the first fresnel lens portion. The reference circumference passes through vicinities of cross points between a horizontal centerline, which halves the fresnel lens sheet into upper and lower portions, and left and right ends of the fresnel lens sheet.
摘要翻译：菲涅尔透镜片在下端附近具有菲涅耳中心，并且包括分别形成为同心圆形的第一和第二菲涅耳透镜部。第一菲涅耳透镜部分存在于参考圆周内，第二菲涅尔透镜部分存在于参考圆周外。第二菲涅尔透镜部分的共轭点距离比第一菲涅尔透镜部分的共轭点距离短。参考圆周穿过菲涅耳透镜片的水平中心线之间的交叉点附近，该中心线将菲涅尔透镜片半部分分成上下部分，以及左右两端。

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