PROJECTION DISPLAY APPARATUS
    1.
    发明申请
    PROJECTION DISPLAY APPARATUS 审中-公开
    投影显示设备

    公开(公告)号:US20120147279A1

    公开(公告)日:2012-06-14

    申请号:US13305213

    申请日:2011-11-28

    IPC分类号: G02F1/1335

    摘要: A projection display device includes: a light source unit including at least one light source configured to emit coherent light; an image light generation unit configured to generate an image light by modulating light emitted by the light source unit; a projection unit configured to project the image light; and a liquid crystal element, disposed in an optical path between the light source unit and the image light generation unit, configured to temporally change a phase and/or polarization of transmitted light, wherein: the liquid crystal element at least includes transparent electrodes respectively provided on opposing faces of a plurality of transparent substrates; a liquid crystal layer including smectic phase liquid crystal showing spontaneous polarization under voltage application is sandwiched between the transparent electrodes; and an AC voltage is applied to the liquid crystal layer through the transparent electrodes.

    摘要翻译: 投影显示装置包括:光源单元,包括被配置为发射相干光的至少一个光源; 图像光生成单元,被配置为通过调制由所述光源单元发射的光来产生图像光; 投影单元,被配置为投影图像光; 以及液晶元件,其设置在所述光源单元和所述图像光发生单元之间的光路中,被配置为暂时改变透射光的相位和/或偏振,其中:所述液晶元件至少包括分别设置的透明电极 在多个透明基板的相对面上; 包含在电压施加下显示自发极化的近晶相液晶的液晶层夹在透明电极之间; 通过透明电极向液晶层施加交流电压。

    WAVELENGTH SELECTING WAVELENGTH PLATE AND OPTICAL HEAD DEVICE USING IT
    2.
    发明申请
    WAVELENGTH SELECTING WAVELENGTH PLATE AND OPTICAL HEAD DEVICE USING IT 有权
    波长选择波长板和使用它的光学头设备

    公开(公告)号:US20090268585A1

    公开(公告)日:2009-10-29

    申请号:US12497194

    申请日:2009-07-02

    IPC分类号: G11B7/135

    摘要: An optical rotating plate has an optical rotating material layer. A phase plate is provided on a first surface side of the optical rotating plate and has at least one birefringent material layer. The first surface side is disposed toward an emitting side of an optical path, thereby giving different phase differences to a first linearly polarized light group containing at least a linearly polarized light having a first wavelength and a second linearly polarized light group containing at least a linearly polarized light having a second wavelength which is different from the first wavelength.

    摘要翻译: 光学旋转板具有光学旋转材料层。 相位板设置在旋转旋转板的第一表面侧,并具有至少一个双折射材料层。 第一表面侧朝向光路的发射侧设置,从而给至少包含具有第一波长的线偏振光的第一线偏振光组和至少包含线性偏振光的第二线偏振光组赋予不同的相位差 具有不同于第一波长的第二波长的偏振光。

    WAVELENGTH-SELECTIVE DIFFRACTION ELEMENT AND OPTICAL HEAD DEVICE INCORPORATING THE SAME
    3.
    发明申请
    WAVELENGTH-SELECTIVE DIFFRACTION ELEMENT AND OPTICAL HEAD DEVICE INCORPORATING THE SAME 失效
    波长选择性衍射元件和同时包含的光学头设备

    公开(公告)号:US20080316600A1

    公开(公告)日:2008-12-25

    申请号:US12139827

    申请日:2008-06-16

    IPC分类号: G02B5/18

    CPC分类号: G02B5/1871 G11B7/1353

    摘要: The present invention provides a wavelength-selective diffraction element, configured such that light having a plurality of wavelengths are incident thereon as incident light, which is provided with: a transparent substrate; a concavo-convex part, formed on the transparent substrate such that concave portions and convex portions are cyclically extended in one direction, and comprised of a first material which is optically isotropic; and a filling part, filling at least the concave portions and comprised of a second material which is optically isotropic. The first material and the second material have no absorbance with respect to the wavelengths of the incident light. The first material and the second material have an identical refractive index with respect to light having a first wavelength which is at least one of the wavelengths of the incident light. The first material and the second material have different refractive indices with respect to light having a second wavelength which is at least one of the wavelengths of the incident light and different from the first wavelength.

    摘要翻译: 本发明提供一种波长选择性衍射元件,其被配置为使得具有多个波长的光作为入射光入射,其设置有:透明基板; 形成在透明基板上的凹凸部,使得凹部和凸部在一个方向上循环延伸,并且由光学各向同性的第一材料构成; 和填充部分,至少填充凹部并由光学各向同性的第二材料构成。 第一材料和第二材料相对于入射光的波长没有吸光度。 第一材料和第二材料相对于具有入射光的至少一个波长的第一波长的光具有相同的折射率。 第一材料和第二材料相对于具有入射光的波长和第一波长的至少一个波长的第二波长的光具有不同的折射率。

    WAVELENGTH SELECTIVE OPTICAL ROTATOR AND OPTICAL HEAD DEVICE
    5.
    发明申请
    WAVELENGTH SELECTIVE OPTICAL ROTATOR AND OPTICAL HEAD DEVICE 审中-公开
    波长选择光学旋转器和光学头设备

    公开(公告)号:US20100321627A1

    公开(公告)日:2010-12-23

    申请号:US12870136

    申请日:2010-08-27

    申请人: Atsushi KOYANAGI

    发明人: Atsushi KOYANAGI

    IPC分类号: G02F1/13

    摘要: A wavelength selective optical rotator includes a liquid crystal layer including a cholesteric-phase liquid crystal, wherein: when a first linearly polarized light having a wavelength λ1 is incident on the liquid crystal layer, the liquid crystal layer converts the first linearly polarized light into a second linearly polarized light is a different linearly polarized light from the first linearly polarized light and outputs the latter; and when a linearly polarized light having a wavelength λ2 that is longer than the wavelength λ1 is incident on the liquid crystal layer, the liquid crystal layer outputs the linearly polarized light without changing its polarization state substantially.

    摘要翻译: 波长选择旋光器包括具有胆甾醇相液晶的液晶层,其中:当具有波长λ1的第一直线偏振光入射到液晶层上时,液晶层将第一直线偏振光转换为 第二线偏振光是来自第一直线偏振光的不同的线偏振光,并输出后者; 并且当具有比波长λ1长的波长λ2的直线偏振光入射到液晶层上时,液晶层基本上不改变其偏振状态而输出线偏振光。