Optical prism for projecting image
    1.
    发明授权
    Optical prism for projecting image 失效
    用于投影图像的光学棱镜

    公开(公告)号:US06690522B2

    公开(公告)日:2004-02-10

    申请号:US10116098

    申请日:2002-04-05

    IPC分类号: G02B504

    摘要: An optical prism (1) for reflecting incident light from an incidence surface (2) suited for incidence of light from an LCD (20) or the like for at least twice before emitting the reflected light as emission light from a predetermined emission surface (4). The optical prism has side surfaces (6L and 6R) crossing the incidence and emission surfaces (2 and 4) and including receded surfaces 7L and 7R) formed such as not to impede an optical path of an effective size, the incident light being led along the optical path from the incidence surface to the emission surface.

    摘要翻译: 一种光学棱镜(1),用于将来自适合于从LCD(20)等的光入射的入射表面(2)的入射光反射至少两次,然后发射反射光作为来自预定发射表面(4)的发射光 )。 光学棱镜具有与入射和发射表面(2和4)交叉并且包括形成为不妨碍有效尺寸的光路的后退表面7L和7R的侧表面(6L和6R),入射光沿着 从入射表面到发射表面的光路。

    Optical prism for projecting image
    2.
    发明授权
    Optical prism for projecting image 失效
    用于投影图像的光学棱镜

    公开(公告)号:US06441978B1

    公开(公告)日:2002-08-27

    申请号:US09049111

    申请日:1998-03-27

    IPC分类号: G02B504

    摘要: An optical prism (1) for reflecting incident light from an incidence surface (2) suited for incidence of light from an LCD (20) or the like for at least twice before emitting the reflected light as emission light from a predetermined emission surface (4). The optical prism has side surfaces (6L and 6R) crossing the incidence and emission surfaces (2 and 4) and including receded surfaces 7L and 7R) formed such as not to impede an optical path of an effective size, the incident light being led along the optical. path from the incidence surface to the emission surface.

    摘要翻译: 一种光学棱镜(1),用于将来自适合于从LCD(20)等的光入射的入射表面(2)的入射光反射至少两次,然后发射反射光作为来自预定发射表面(4)的发射光 )。 光学棱镜具有与入射和发射表面(2和4)相交的侧表面(6L和6R),并且包括形成为不妨碍有效尺寸的光路的后退表面7L和7R,入射光沿着 光学。 从入射面到发射面的路径。

    Head-mount image display apparatus
    3.
    发明授权
    Head-mount image display apparatus 失效
    头戴式图像显示装置

    公开(公告)号:US5812224A

    公开(公告)日:1998-09-22

    申请号:US731726

    申请日:1996-10-18

    IPC分类号: H04N5/64 G02B27/01 G02F1/1335

    CPC分类号: G02B27/0176

    摘要: It is the object of the invention to provide a compact and highly stable head-mount image display apparatus capable of always transmitting voice information of an optimal volume, irrespective of the positional relationship between the head and the ear of an observer, which is related to the shape and/or size of the head. To attain the object, speakers incorporated in the apparatus of the invention can be moved to desired positions in accordance with changes in the positional relationship between the head and the ears of observers. Further, the apparatus of the invention can be folded to reduce the area the apparatus occupies.

    摘要翻译: 本发明的目的是提供一种紧凑且高度稳定的头戴式图像显示装置,其能够总是传送最佳音量的语音信息,而与观察者的头部和耳朵之间的位置关系无关,这与 头部的形状和/或尺寸。 为了实现该目的,结合在本发明的装置中的扬声器可以根据观察者的头部和耳朵之间的位置关系的变化而移动到期望的位置。 此外,本发明的装置可以被折叠以减少装置占用的面积。

    Optical sheet, optical sheet manufacturing system, and optical sheet cutting machine
    4.
    发明授权
    Optical sheet, optical sheet manufacturing system, and optical sheet cutting machine 失效
    光学片,光学片制造系统和光学片切割机

    公开(公告)号:US06807003B2

    公开(公告)日:2004-10-19

    申请号:US10025312

    申请日:2001-12-19

    IPC分类号: G03B2160

    CPC分类号: G03B21/602

    摘要: An optical sheet to be used as a screen on which an image is projected from an image projector is provided. The optical sheet is produced by joining a plurality of optical sheet members with end surfaces thereof meeting each other as joint surfaces. The optical sheet members are realized with lenticular lens sheets. Each lenticular lens sheet has lenses, which are elongated in a second direction, juxtaposed in a first direction orthogonal to the second direction. The optical properties of the optical sheet members that are slightly undulated vary cyclically in the first direction. And the optical sheet members to be joined are a selected pair of optical sheet members whose undulations are substantially identical to each other or symmetrical to each other with respect to the joint surfaces.

    摘要翻译: 提供用作从图像投影仪投影图像的屏幕的光学片。 光学片通过将多个光学片部件的端面相互连接而形成为接合面。 光学片部件由双凸透镜片实现。 每个双凸透镜片具有沿与第二方向垂直的第一方向并列的第二方向的透镜。 稍微起伏的光学片构件的光学特性在第一方向上周期性地变化。 并且要接合的光学片构件是选定的一对光学片构件,其波纹​​彼此基本相同或相对于接合表面彼此对称。

    Light modulating unit and image projection apparatus
    5.
    发明授权
    Light modulating unit and image projection apparatus 失效
    光调制单元和图像投影设备

    公开(公告)号:US07270416B2

    公开(公告)日:2007-09-18

    申请号:US11053517

    申请日:2005-02-08

    IPC分类号: G03B21/00 G03B21/14

    摘要: A light modulating unit includes first and second light modulating sections each of which modulates an illumination light on the basis of a video signal to generate a projection light that is a linearly polarized light, a light path synthesizing section which synthesizes the projection lights generated by the first and second light modulating sections using the nature that directions of polarizations of the projection lights cross at right angles, and a beam shifting section which sets beams of the projection lights synthesized by the light path synthesizing section, in a shifted state or a non-shifted state on the basis of the directions of polarizations of the projection lights, the beam shifting section switching the shifted state and the non-shifted state synchronously with modulation timings for the first and second light modulating sections.

    摘要翻译: 光调制单元包括第一和第二光调制部分,每个调制部分基于视频信号调制照明光以产生作为线偏振光的投影光;光路合成部分,其合成由 第一和第二光调制部分,其使用投射光的偏振方向与直角交叉的性质;以及光束移动部,其将由光路合成部合成的投影光束设置为偏移状态, 基于投影光的偏振方向的移动状态,光束移动部分与第一和第二光调制部分的调制定时同步地切换移动状态和非移动状态。

    Image forming system and optical screen unit
    6.
    发明授权
    Image forming system and optical screen unit 失效
    图像形成系统和光学屏幕单元

    公开(公告)号:US06698901B2

    公开(公告)日:2004-03-02

    申请号:US10025281

    申请日:2001-12-19

    IPC分类号: G03B2114

    CPC分类号: G03B21/56

    摘要: An image forming system is provided which includes an optical sheet and an image projector. The optical sheet is constructed by joining a plurality of sheet members with adjoining sheet members meeting to form a joint line. The image projector produces an image and projects the image to the optical sheet through a projection optical system. The relative positional relationship between the image projector and optical sheet is such that the optical axis of the projection optical system included in the image projector perpendicularly intersects the joint line in the optical sheet. Thus, reflection or scattering of light at the joint line is minimized.

    摘要翻译: 提供了一种图像形成系统,其包括光学片和图像投影仪。 光学片通过将多个片材与邻接的片状部件接合而构成,以形成接合线。 图像投影仪产生图像并通过投影光学系统将图像投影到光学片。 图像投影仪和光学片之间的相对位置关系使得包括在图像投影仪中的投影光学系统的光轴垂直于光学片中的接合线。 因此,在接合线处的光的反射或散射最小化。

    Light modulating unit and image projection apparatus
    7.
    发明申请
    Light modulating unit and image projection apparatus 失效
    光调制单元和图像投影设备

    公开(公告)号:US20050185139A1

    公开(公告)日:2005-08-25

    申请号:US11053517

    申请日:2005-02-08

    摘要: A light modulating unit includes first and second light modulating sections each of which modulates an illumination light on the basis of a video signal to generate a projection light that is a linearly polarized light, a light path synthesizing section which synthesizes the projection lights generated by the first and second light modulating sections using the nature that directions of polarizations of the projection lights cross at right angles, and a beam shifting section which sets beams of the projection lights synthesized by the light path synthesizing section, in a shifted state or a non-shifted state on the basis of the directions of polarizations of the projection lights, the beam shifting section switching the shifted state and the non-shifted state synchronously with modulation timings for the first and second light modulating sections.

    摘要翻译: 光调制单元包括第一和第二光调制部分,每个调制部分基于视频信号调制照明光以产生作为线偏振光的投影光;光路合成部分,其合成由 第一和第二光调制部分,其使用投射光的偏振方向与直角交叉的性质;以及光束移动部,其将由光路合成部合成的投影光束设置为偏移状态, 基于投影光的偏振方向的移动状态,光束移动部分与第一和第二光调制部分的调制定时同步地切换移动状态和非移动状态。

    POLARIZATION SWITCHING LIQUID CRYSTAL ELEMENT AND IMAGE DISPLAY APPARATUS HAVING THE SAME
    10.
    发明申请
    POLARIZATION SWITCHING LIQUID CRYSTAL ELEMENT AND IMAGE DISPLAY APPARATUS HAVING THE SAME 有权
    极化开关液晶元件和具有该液晶元件的图像显示装置

    公开(公告)号:US20080225187A1

    公开(公告)日:2008-09-18

    申请号:US12111390

    申请日:2008-04-29

    申请人: Kazuya Yamanaka

    发明人: Kazuya Yamanaka

    IPC分类号: G02F1/13363 C09K19/02

    摘要: The present invention provides a polarization switching liquid crystal element 1 having TN liquid crystal 7 retained between two transparent substrates 2a and 2b for transmitting at least visible polarized light with the polarized light transmission axis selectively rotated by 90 degrees when a voltage is selectively applied to the TN liquid crystal 7, wherein a phase difference u of said TN liquid crystal 7 is defined by the following equation: u=2×Δn×d/λ, where Δn is the refractive index anisotropy of said TN liquid crystal 7, d is the thickness of said TN liquid crystal 7, and λ is the wavelength of said polarized light, and a transmittance T of said polarization switching liquid crystal element measured with polarization plates on the incident and outgoing sides is defined by the following equation: T=(½)×sin2{π(1+u2)1/2/2}/(1+u2), and wherein the phase difference u includes a value 1.7 and the transmittance T is 0.1 or lower when the λ ranges from 400 nm to 700 nm. Then, a polarization switching liquid crystal element having a high response speed and reduced wavelength-dependency can be realized using inexpensive and highly durable TN liquid crystal without increasing parts cost.

    摘要翻译: 本发明提供了一种偏振切换液晶元件1,其具有保持在两个透明基板2a和2b之间的TN液晶7,用于当选择性地施加电压时透射偏振光透射轴选择性旋转90度的至少可见偏振光 对于TN液晶7,其中所述TN液晶7的相位差u由以下等式定义:u = 2×Deltanxd /λ,其中Deltan是所述TN液晶7的折射率各向异性,d是厚度 的所述TN液晶7,λ是所述偏振光的波长,并且在入射侧和出射侧用偏振板测量的所述偏振切换液晶元件的透射率T由以下等式定义:T =(1/2) (1 + u 2/2)/(1 + u 2/2) ),并且其中相位差u包括值1.7和透射率T i 当λ范围为400nm至700nm时,其为0.1或更低。 然后,可以使用廉价且高度耐用的TN液晶来实现具有高响应速度和降低的波长依赖性的偏振切换液晶元件,而不增加部件成本。