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    • 6. 发明申请
    • IMAGE PROJECTION APPARATUS AND IMAGE DISPLAY SYSTEM
    • 图像投影设备和图像显示系统
    • US20100053559A1
    • 2010-03-04
    • US12546461
    • 2009-08-24
    • Reona UshigomeKazuhiko Momoki
    • Reona UshigomeKazuhiko Momoki
    • G03B21/14
    • G03B33/12G03B21/2033G03B21/2073G03B21/208
    • An image projection apparatus includes light sources 111 to 113 emitting at least two colored lights whose wavelengths are different from each other, a polarization conversion element 2 controlling a polarization direction of the colored light, at least two light modulation elements 41 and 42 modulating incident light, a light guide optical system 31 guiding the at least two colored lights from the polarization conversion element to the at least two light modulation elements in accordance with the polarization direction, and a projection optical system 5. One of the at least two colored light and the other are emitted as lights whose polarization directions are different from each other from the polarization conversion element. A drive unit 6 turns on the light sources so that the one of the colored lights and at least one of the other enter the at least two light modulation elements at the same time.
    • 图像投影装置包括发射波长彼此不同的至少两个彩色光的光源111至113,控制着色光的偏振方向的偏振转换元件2,调制入射光的至少两个光调制元件41和42 ,导光光学系统31,根据偏振方向将至少两个着色光从偏振转换元件引导到至少两个光调制元件;以及投影光学系统5.至少两个有色光和 另一个作为偏振方向与偏振转换元件彼此不同的光发射。 驱动单元6打开光源,使得彩色光中的一个和其中至少一个同时进入至少两个光调制元件。
    • 8. 发明授权
    • Polarization element and optical device using polarization element
    • 偏振元件和使用偏振元件的光学元件
    • US07236655B2
    • 2007-06-26
    • US11433233
    • 2006-05-12
    • Kazuhiko MomokiKeiji Ohtaka
    • Kazuhiko MomokiKeiji Ohtaka
    • G02B6/00
    • G02B5/1809G02B5/3025
    • A high performance polarization splitting element and an optical device using the polarization splitting element are provided. According to an embodiment of the present invention, the optical device includes a first periodic structure having a period shorter than a wavelength of used light, a second periodic structure which has a period shorter than the wavelength of the used light and in which a direction of the period is orthogonal to or substantially orthogonal to that of the first periodic structure, and a pair of optical elements disposed so as to sandwich the first periodic structure and the second periodic structure. The second periodic structure is adjacent to the first periodic structure. The first periodic structure and the second periodic structure transmit light having first polarization direction and reflect light having second polarization direction orthogonal to the first direction, and the second polarization direction is substantially parallel to one of the periodic direction of the first periodic structure and the periodic direction of the second periodic structure.
    • 提供了高性能偏振分离元件和使用偏振分离元件的光学器件。 根据本发明的实施例,光学装置包括具有比所使用的光的波长短的周期的第一周期性结构,具有比所使用的光的波长短的周期的第二周期性结构,其中, 所述周期与所述第一周期性结构的周期正交或基本正交,并且所述一对光学元件被布置为夹着所述第一周期性结构和所述第二周期性结构。 第二周期性结构与第一周期结构相邻。 第一周期性结构和第二周期性结构透射具有第一偏振方向的光并且反射具有与第一方向正交的第二偏振方向的光,并且第二偏振方向基本上平行于第一周期性结构的周期方向之一, 方向的第二周期性结构。
    • 10. 发明授权
    • Optical apparatus having a focus detecting device with decentration
position detection
    • 具有具有偏心位置检测的聚焦检测装置的光学装置
    • US5698841A
    • 1997-12-16
    • US677354
    • 1996-07-05
    • Kazuhiko Momoki
    • Kazuhiko Momoki
    • G03B13/36G02B7/08G02B7/28G02B7/34G02B27/64G03B5/00G01J1/20
    • G03B5/00G02B27/646G03B13/34G03B2205/0007
    • An optical apparatus provided with a light receiving device for receiving light distributions from light beams passed through different portions of a pupil of a main imaging lens, a focus state detecting device for detecting the focus state of the main imaging lens from the positional relation between the light distributions received by the light receiving device, a decentration position detecting device for detecting the decentration position of a decenterable lens provided in the main imaging lens, a memory for memorizing inherent data of the main imaging lens which should correct the focus state detection output at each decentration position, and a calculating device for calculating the amount of movement of a focusing lens for focusing by the use of the inherent data read out from the memory conforming to a signal from the decentration position detecting device and the focus state detection output.
    • 一种光学装置,具备:受光装置,用于从通过主成像透镜的光瞳的不同部分的光束接收光分布;聚焦状态检测装置,用于从主成像透镜的瞳孔的位置关系检测聚焦状态; 由光接收装置接收的光分布;偏心位置检测装置,用于检测设置在主成像透镜中的偏心透镜的偏心位置;存储器,用于存储主成像透镜的固有数据,该主成像透镜应校正聚焦状态检测输出 每个偏心位置,以及计算装置,用于通过使用根据来自偏心位置检测装置的信号和聚焦状态检测输出的从存储器读出的固有数据来计算用于聚焦的聚焦透镜的移动量。