公开(公告)号：US20050213043A1

公开(公告)日：2005-09-29

申请号：US11061055

申请日：2005-02-18

申请人： Tsutomu Nakashima ,  Masahiko Yatsu ,  Koji Hirata

发明人： Tsutomu Nakashima ,  Masahiko Yatsu ,  Koji Hirata

IPC分类号： G02B27/18 ,  G02B27/28 ,  G03B21/14

CPC分类号： G03B21/14 ,  G03B21/16 ,  G03B21/2073

摘要： A technique according to the present invention allows a projection-type image display system to suppress the temperature rise of the polarization split devices and secure high image quality. Polarization split means has a polarization split device arranged in a medium with a refractive index larger than 1. The polarization split device has a polarization split surface on which a diffractive grating structure is formed to polarize and split light. An air layer is formed in contact with the polarization split surface. In a projection type image display apparatus or an optical unit using this apparatus, light fluxes are polarized and split by the polarization split means before irradiated to light valves and after modulated by the light valves and color composition is made from the polarized and split light fluxes before enlarged and projected by a projection lens unit.

摘要翻译： 根据本发明的技术允许投影型图像显示系统抑制偏振分离装置的温度升高并确保高图像质量。 极化分离装置具有布置在折射率大于1的介质中的偏振分离装置。偏振分离装置具有偏振分裂表面，其上形成有衍射光栅结构以使光分离和分离。 形成与偏振分离面接触的空气层。 在使用该装置的投影型图像显示装置或光学装置中，光束在被照射到光阀之前被偏振分束装置偏振并分离，并且在被光阀调制之后，并且由偏振和分离光束形成色彩组合 之后由投影透镜单元放大和投影。

公开(公告)号：US20050140926A1

公开(公告)日：2005-06-30

申请号：US11009053

申请日：2004-12-13

申请人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu

发明人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu

IPC分类号： G02F1/13 ,  G02B27/18 ,  G02F1/1335 ,  G02F1/13357 ,  G03B21/00 ,  G03B21/10 ,  G03B21/14 ,  H04N5/74 ,  H04N9/31

CPC分类号： H04N9/3105

摘要： The present invention provides a projection type image display device capable of affording a bright display of a high saturation and capable of ensuring a high reliability of optical parts. The projection type image display device is provided with a color synthesizer for color-synthesizing modulated and polarized light of red light, green light, and blue light, outputted from an image display element. The color synthesizer has an optical characteristic such that the transmittance including reflection by a reflecting film in the interior of the color synthesizer becomes highest for the polarized light of blue light out of the modulated and polarized light of red light, that of green light, and that of blue light. The color synthesizer also has an optical characteristic such that the quantity of the polarized light of blue light outputted becomes largest out of the modulated and polarized light of red light, green light, and blue light.

摘要翻译： 本发明提供了能够提供高饱和度的明亮显示并且能够确保光学部件的高可靠性的投影型图像显示装置。 投影型图像显示装置设置有用于对从图像显示元件输出的红光，绿光和蓝光的调制偏振光进行颜色合成的颜色合成器。 彩色合成器具有这样的光学特性，使得包括彩色合成器内部的反射膜的反射的透射率对于红光的调制偏振光和绿光的偏振光中的蓝色光的偏振光变得最高，以及 蓝光。 彩色合成器还具有使得输出的蓝光的偏振光的量在红光，绿光和蓝光的调制偏振光中变得最大的光学特性。

公开(公告)号：US07237901B2

公开(公告)日：2007-07-03

申请号：US11009053

申请日：2004-12-13

申请人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu

发明人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu

IPC分类号： G03B21/14

CPC分类号： H04N9/3105

摘要： The present invention provides a projection type image display device capable of affording a bright display of a high saturation and capable of ensuring a high reliability of optical parts. The projection type image display device is provided with a color synthesizer for color-synthesizing modulated and polarized light of red light, green light, and blue light, outputted from an image display element. The color synthesizer has an optical characteristic such that the transmittance including reflection by a reflecting film in the interior of the color synthesizer becomes highest for the polarized light of blue light out of the modulated and polarized light of red light, that of green light, and that of blue light. The color synthesizer also has an optical characteristic such that the quantity of the polarized light of blue light outputted becomes largest out of the modulated and polarized light of red light, green light, and blue light.

摘要翻译： 本发明提供了能够提供高饱和度的明亮显示并且能够确保光学部件的高可靠性的投影型图像显示装置。 投影型图像显示装置设置有用于对从图像显示元件输出的红光，绿光和蓝光的调制偏振光进行颜色合成的颜色合成器。 彩色合成器具有这样的光学特性，使得包括彩色合成器内部的反射膜的反射的透射率对于红光的调制偏振光和绿光的偏振光中的蓝色光的偏振光变得最高，以及 蓝光。 彩色合成器还具有使得输出的蓝光的偏振光的量在红光，绿光和蓝光的调制偏振光中变得最大的光学特性。

公开(公告)号：US07210797B2

公开(公告)日：2007-05-01

申请号：US10865643

申请日：2004-06-09

申请人： Koji Hirata ,  Shuji Kato ,  Masahiko Yatsu ,  Tsutomu Nakashima ,  Hidehiro Ikeda

发明人： Koji Hirata ,  Shuji Kato ,  Masahiko Yatsu ,  Tsutomu Nakashima ,  Hidehiro Ikeda

IPC分类号： G03B21/26 ,  G03B21/28 ,  G03B21/56 ,  G02B3/00 ,  G02B13/22 ,  H04N5/74 ,  G02F1/1335

CPC分类号： G03B21/006

摘要： In a projection type image display apparatus, a projector optical unit for projecting an image onto a screen while magnifying a size of the image to be projected with respect to an original size of the image displayed by an image forming element, has a group of lenses for magnifying the size of the image with respect to the original size thereof, and an optical path extending from the image forming element to the screen to transmit the image along the optical path.

摘要翻译： 在投影型图像显示装置中，投影光学单元用于将图像投影到屏幕上，同时相对于由图像形成元件显示的图像的原始尺寸放大要投影的图像的尺寸，具有一组透镜 用于相对于其原始尺寸放大图像的尺寸，以及从图像形成元件延伸到屏幕以沿着光路传输图像的光路。

公开(公告)号：US20060126020A1

公开(公告)日：2006-06-15

申请号：US10525514

申请日：2004-03-26

申请人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu ,  Nobuo Masuoka

发明人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu ,  Nobuo Masuoka

IPC分类号： G03B21/14

CPC分类号： G03B21/005

摘要： An optical unit, comprising: a light source; a color separation means for separating a light emitted from the light source into plural pieces of color lights; reflection-type image display elements, upon each being incident the corresponding color of the lights from the color separation means, and for forming an optical image for each of the color lights, depending upon an image signal, with using polarization characteristics which the reflection-type image display elements have; and a color synthesizing means for synthesizing the optical images of the respective color lights, to be projected through a projection lens, enlargedly, and further comprising: a reflection-type polarization plate functioning as a polarization plate due to diffraction, being provided on an optical path extending from the color separation means to the reflection-type image display elements, to be a polarizer and an analyzer to the reflection-type image display elements; and an optical chassis for holding the reflection-type polarization plate and the reflection-type image display elements thereon, and having a translucent window on an incident light side of the reflection-type polarization plate while an exiting light side of the reflection-type polarization plate is sealed with an incident surface of the color synthesizing means, wherein a hermetically sealed space is defined by the optical chassis, the reflection-type image display elements and the incident surface of the color synthesizing means, and within the hermetically sealed space is disposed a translucent liquid having refraction index from 1.2 to 1.9.

摘要翻译： 一种光学单元，包括：光源; 用于将从光源发射的光分离成多个彩色光的颜色分离装置; 反射型图像显示元件，在每次入射时，来自分色装置的光的相应颜色，并且根据图像信号，对于每个彩色光形成光学图像，使用偏振特性， 类型图像显示元素有; 以及颜色合成装置，用于合成通过投影透镜放大地投影的各个颜色光的光学图像，并且还包括：反射型偏振板，由于衍射而用作偏振板，设置在光学 将从分色装置延伸到反射型图像显示元件的路径成为偏振器和分析器到反射型图像显示元件; 以及用于将反射型偏振板和反射型图像显示元件保持在其上的光学底盘，并且在反射型偏振板的入射光侧具有半透明窗口，而反射型偏振片的出射光侧 用彩色合成装置的入射表面密封板，其中由光学底盘，反射型图像显示元件和颜色合成装置的入射表面以及在密封空间内的气密密封空间被设置 折射指数为1.2〜1.9的半透明液体。

公开(公告)号：US20050036120A1

公开(公告)日：2005-02-17

申请号：US10865643

申请日：2004-06-09

申请人： Koji Hirata ,  Shuji Kato ,  Masahiko Yatsu ,  Tsutomu Nakashima ,  Hidehiro Ikeda

发明人： Koji Hirata ,  Shuji Kato ,  Masahiko Yatsu ,  Tsutomu Nakashima ,  Hidehiro Ikeda

IPC分类号： G02B13/18 ,  G02B13/16 ,  G02B13/24 ,  G02B21/00 ,  G02B27/18 ,  G03B21/00 ,  G03B21/10 ,  G03B21/20 ,  H04N9/31

CPC分类号： G03B21/006

摘要： In a projection type image display apparatus, a projector optical unit for projecting an image onto a screen while magnifying a size of the image to be projected with respect to an original size of the image displayed by an image forming element, has a group of lenses for magnifying the size of the image with respect to the original size thereof, and an optical path extending from the image forming element to the screen to transmit the image along the optical path.

摘要翻译： 在投影型图像显示装置中，投影光学单元用于将图像投影到屏幕上，同时相对于由图像形成元件显示的图像的原始尺寸放大要投影的图像的尺寸，具有一组透镜 用于相对于其原始尺寸放大图像的尺寸，以及从图像形成元件延伸到屏幕以沿着光路传输图像的光路。

公开(公告)号：US07255444B2

公开(公告)日：2007-08-14

申请号：US11061055

申请日：2005-02-18

申请人： Tsutomu Nakashima ,  Masahiko Yatsu ,  Koji Hirata

发明人： Tsutomu Nakashima ,  Masahiko Yatsu ,  Koji Hirata

IPC分类号： G03B21/14 ,  G02B27/44 ,  G02B5/06

CPC分类号： G03B21/14 ,  G03B21/16 ,  G03B21/2073

摘要： A technique according to the present invention allows a projection-type image display system to suppress the temperature rise of the polarization split devices and secure high image quality. Polarization split means has a polarization split device arranged in a medium with a refractive index larger than 1. The polarization split device has a polarization split surface on which a diffractive grating structure is formed to polarize and split light. An air layer is formed in contact with the polarization split surface. In a projection type image display apparatus or an optical unit using this apparatus, light fluxes are polarized and split by the polarization split means before irradiated to light valves and after modulated by the light valves and color composition is made from the polarized and split light fluxes before enlarged and projected by a projection lens unit.

摘要翻译： 根据本发明的技术允许投影型图像显示系统抑制偏振分离装置的温度升高并确保高图像质量。 极化分离装置具有布置在折射率大于1的介质中的偏振分离装置。偏振分离装置具有偏振分裂表面，其上形成有衍射光栅结构以使光分离和分离。 形成与偏振分离面接触的空气层。 在使用该装置的投影型图像显示装置或光学装置中，光束在被照射到光阀之前被偏振分束装置偏振并分离，并且在被光阀调制之后，并且由偏振和分离光束形成色彩组合 之后由投影透镜单元放大和投影。

公开(公告)号：US07241015B2

公开(公告)日：2007-07-10

申请号：US10525514

申请日：2004-03-26

申请人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu ,  Nobuo Masuoka

发明人： Koji Hirata ,  Tsutomu Nakashima ,  Masahiko Yatsu ,  Nobuo Masuoka

IPC分类号： G03B21/00 ,  G03B21/14 ,  G03B21/22

CPC分类号： G03B21/005

摘要： An optical unit includes a light source, a color separator, reflection-type image display elements, a color synthesizer, a reflection-type polarization plate, and an optical chassis. The optical chassis holds the reflection-type polarization plate and the reflection-type image display elements thereon, and has a translucent window on an incident light side of the reflection-type polarization plate while an exiting light side of the reflection-type polarization plate is sealed with an incident surface of the color synthesizer. A hermetically sealed space is defined by the optical chassis, the reflection-type image display elements and the incident surface of the color synthesizer, and within the hermetically sealed space is disposed a translucent liquid having a refraction index from 1.2 to 1.9.

摘要翻译： 光学单元包括光源，分色器，反射型图像显示元件，彩色合成器，反射型偏振板和光学底盘。 光学底盘将反射型偏振板和反射型图像显示元件保持在其上，并且在反射型偏振板的入射光侧具有半透明窗口，而反射型偏振板的出射光侧为 用彩色合成器的入射表面密封。 由光学底盘，反射型图像显示元件和彩色合成器的入射面限定气密密封空间，并且在气密密封空间内设置折射率为1.2〜1.9的半透明液体。

公开(公告)号：US07222965B2

公开(公告)日：2007-05-29

申请号：US10916991

申请日：2004-08-11

申请人： Masahiko Yatsu ,  Tsutomu Nakashima

发明人： Masahiko Yatsu ,  Tsutomu Nakashima

IPC分类号： G03B21/14 ,  G03B21/26 ,  G03B21/28 ,  G03B21/20 ,  G02F1/1335 ,  G02B5/30 ,  G02B27/28 ,  G02B27/14 ,  G02B27/12 ,  H04N5/74

CPC分类号： G02B13/16 ,  G02B27/0025

摘要： The present invention provides a projection image display technology capable of correcting astigmatism due to use of a polarized-beam splitter, thus ensuring high-resolution projection images. A wire-grid polarized-beam splitter (or the like) of a flat-plate-like structure is used as a polarized-beam splitter, and an astigmatism correction element, such as a cylindrical lens, is provided between the polarized-beam splitter and a projection lens unit.

摘要翻译： 本发明提供一种投影图像显示技术，其能够利用偏振光分束器校正散光，从而确保高分辨率投影图像。 使用平板状结构的线栅偏振分束器（等）作为偏振分束器，并且在偏振光束分离器之间设置诸如柱面透镜的像散校正元件 和投影透镜单元。

公开(公告)号：US20050140931A1

公开(公告)日：2005-06-30

申请号：US10916991

申请日：2004-08-11

申请人： Masahiko Yatsu ,  Tsutomu Nakashima

发明人： Masahiko Yatsu ,  Tsutomu Nakashima

IPC分类号： G02B5/30 ,  G02B13/16 ,  G02B27/00 ,  G02B27/18 ,  G02F1/13 ,  G02F1/1335 ,  G03B21/00

CPC分类号： G02B13/16 ,  G02B27/0025

摘要： The present invention provides a projection image display technology capable of correcting astigmatism due to use of a polarized-beam splitter and thus ensuring high-resolution projection images. A wire-grid polarized-beam splitter (or the like) of a flat-plate-like structure, is used as a polarized-beam splitter, and an astigmatism correction element, such as a cylindrical lens, is provided between the polarized-beam splitter and a projection lens unit.

摘要翻译： 本发明提供一种投影图像显示技术，其能够通过使用偏振光分束器来校正像散，从而确保高分辨率投影图像。 使用平板状结构的线栅偏振分束器（等）作为偏振光束分离器，并且在偏振光束之间设置诸如柱面透镜的像散校正元件 分路器和投影透镜单元。