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1. 发明申请

US20050213043A1 Optical unit and projection-type image display apparatus using the same 失效
标题翻译：使用其的光学单元和投影型图像显示装置
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。

2. 发明申请

US20050140926A1 Projection type image display device, rear projection type image display device, optical unit, and screen unit 有权
标题翻译：投射型图像显示装置，背投型图像显示装置，光学装置和屏幕装置
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。

3. 发明授权

US07237901B2 Projection type image display device, rear projection type image display device, optical unit, and screen unit 有权
标题翻译：投射型图像显示装置，背投型图像显示装置，光学装置和屏幕装置
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。

4. 发明授权

US07255444B2 Optical unit and projection-type image display apparatus using the same 失效
标题翻译：使用其的光学单元和投影型图像显示装置
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。

5. 发明授权

US07241015B2 Optical unit and projection type image display unit using it 失效
标题翻译：光学单元和投影型图像显示单元使用它
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。

6. 发明授权

US07210797B2 Projector optical unit, projection type image display apparatus, and rear projection type image display apparatus 有权
标题翻译：投影仪光学单元，投影型图像显示装置和背投型图像显示装置
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。

7. 发明申请

US20060126020A1 Optical unit and pojection type image display unit using it 失效
标题翻译：光学单元和pojection型图像显示单元使用它
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。

8. 发明申请

US20050036120A1 Projector optical unit, projection type image display apparatus, and rear projection type image display apparatus 有权
标题翻译：投影仪光学单元，投影型图像显示装置和背投型图像显示装置
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。

9. 发明授权

US08313199B2 Projection display system including lens group and reflecting mirror 有权
标题翻译：投影显示系统，包括镜头组和反射镜
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。

10. 发明申请

US20100277703A1 PROJECTION OPTICAL UNIT, PROJECTION-TYPE IMAGE DISPLAYING APPARATUS AND PROJECTION-TYPE IMAGE DISPLAYING SYSTEM 有权
标题翻译：投影光学单元，投影型图像显示设备和投影类型图像显示系统
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。

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