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。

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。

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）。

公开(公告)号：US20060227299A1

公开(公告)日：2006-10-12

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： G03B21/28

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。

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）。

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。

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。

公开(公告)号：US08313199B2

公开(公告)日：2012-11-20

申请号：US11871438

申请日：2007-10-12

申请人： Koji Hirata ,  Masahiko Yatsu ,  Takanori Hisada ,  Masayuki Ohki

发明人： Koji Hirata ,  Masahiko Yatsu ,  Takanori Hisada ,  Masayuki Ohki

IPC分类号： G03B21/26 ,  G03B21/56 ,  G02B3/00

CPC分类号： G03B21/56 ,  G02B17/08 ,  G02B17/0852 ,  G03B21/10 ,  G03B21/14 ,  G03B21/28

摘要： A projection display system comprising a projection display unit including a light source, an image display element, a lighting optical system irradiating a beam of light on the image display element, and a projection optical system projecting an image light from the image display element toward a screen. The projection optical system including a lens group composed of a plurality of lens elements arranged in order toward the screen from the image display element and symmetrically with respect to an optical axis, and a reflecting mirror shaped to be axial-asymmetrical with respect to the optical axis. The projection display system further comprises a screen 5. The projection display unit projects the image light onto a projection plane of the screen to display an image.

摘要翻译： 一种投影显示系统，包括：投影显示单元，包括光源，图像显示元件，照射在所述图像显示元件上的光束的照明光学系统;以及投影光学系统，将图像光从所述图像显示元件投射到 屏幕。 投影光学系统包括由从图像显示元件顺序排列并相对于光轴对称布置的多个透镜元件的透镜组以及相对于光学轴向不对称成形的反射镜 轴。 投影显示系统还包括屏幕5.投影显示单元将图像光投影到屏幕的投影平面上以显示图像。

公开(公告)号：US20100277703A1

公开(公告)日：2010-11-04

申请号：US12838915

申请日：2010-07-19

申请人： Takanori Hisada ,  Koji Hirata ,  Masahiko Yatsu

发明人： Takanori Hisada ,  Koji Hirata ,  Masahiko Yatsu

IPC分类号： G03B21/28

CPC分类号： G03B21/28

摘要： A projection optical unit for a projection display apparatus, which displays an image upon a projection surface, obliquely, includes a front lens group disposed in a direction from an image display element to a projection surface, a rear lens group, and a reflection mirror formed so that a curvature of a portion for reflecting a light beam incident upon a lower end portion of the projection surface is larger than a curvature of a portion for reflecting a light beam incident upon an upper end of the projection surface. An optical axis of the front lens group and the rear lens group is more inclined with respect to a direction of the portion of the reflection mirror for reflecting the light beam incident upon the lower end portion of the projection surface than a normal line direction of the image display element.

摘要翻译： 一种用于投影显示设备的投影光学单元，其在投影表面上倾斜地显示图像，包括沿从图像显示元件到投影表面的方向设置的前透镜组，后透镜组和形成的反射镜 使得入射到投影表面的下端部分上的反射光束的部分的曲率大于用于反射入射在投影表面的上端的光束的部分的曲率。 前透镜组和后透镜组的光轴相对于反射镜的部分的方向更倾斜，用于反射入射在投影表面的下端部上的光束，而不是垂直方向 图像显示元件。

公开(公告)号：US07766488B2

公开(公告)日：2010-08-03

申请号：US11763465

申请日：2007-06-15

申请人： Koji Hirata ,  Takanori Hisada ,  Masahiko Yatsu

发明人： Koji Hirata ,  Takanori Hisada ,  Masahiko Yatsu

IPC分类号： G03B21/14 ,  G03B21/28

CPC分类号： G03B21/28 ,  G02B17/0852 ,  G03B21/145 ,  H04N9/317

摘要： A projection-type image display apparatus for projecting an image, enlargedly, onto a projection surface, comprises: an image display element; a lens group, being disposed behind the image display element, comprising therein, a front lens group made up with a plural number of lenses, including, at least, a refractive lens, having a positive power and being rotationally symmetric in a surface configuration thereof, and a rear lens group made up with a plural number of lenses, including, at least, a lens having a free curved surface configuration and being rotationally asymmetric, thereby emitting the image displayed on the image display element; a reflection mirror for reflecting the light from the lens group, thereby projection onto the projection surface, obliquely; a first mounting base, on which the rear lens group is mounted; and a rod member, which is provided on the mounting base for moving the mounting base.

摘要翻译： 一种用于将图像放大地投影到投影表面上的投影型图像显示装置，包括：图像显示元件; 设置在图像显示元件后面的透镜组，其中包括由多个透镜构成的前透镜组，至少包括具有正光焦度并在其表面形状中旋转对称的折射透镜 以及由多个透镜构成的后透镜组，至少包括具有自由曲面构造并且旋转非对称的透镜，从而发射显示在图像显示元件上的图像; 用于反射来自透镜组的光的反射镜，从而倾斜地突出到投影表面上; 第一安装基座，其上安装后透镜组; 以及杆构件，其设置在安装基座上用于移动安装基座。