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    • 5. 发明授权
    • Light source device and projector
    • 光源设备和投影机
    • US07648247B2
    • 2010-01-19
    • US11506838
    • 2006-08-21
    • Yasunori OgawaShinsuke Ito
    • Yasunori OgawaShinsuke Ito
    • G03B21/14G03B21/22F21V7/00F21V5/00
    • G03B21/2066G03B21/142
    • A light source device (411) has a lamp body (411A) including a light source lamp, a reflector (417) and an anti-explosion glass (418), and a lamp housing (411B) for accommodating the lamp body (411A). A plurality of projections (411B8) protruding along an optical axis of a light beam irradiated by the light source lamp are formed on the lamp housing (411B). Further, the reflector (417) has an approximately concave cross section and a positioning surface (417C) that touches the projections (411B8) of the lamp housing (411B) to locate the lamp body (411A) relative to the lamp housing (411B) is provided on a distal side of the concave section. The positioning surface (417C) is continuously flush.
    • 光源装置(411)具有包括光源灯,反射器(417)和防爆玻璃(418)的灯体(411A)和用于容纳灯体(411A)的灯壳体(411B) 。 在灯壳体(411B)上形成有沿着由光源灯照射的光束的光轴突出的多个突起(411B8)。 此外,反射器(417)具有大致凹状的截面和与灯壳体(411B)的突起(411B8)接触以使灯体(411A)相对于灯壳体(411B)定位的定位面(417C) 设置在凹部的远端侧。 定位面(417C)连续冲洗。
    • 6. 再颁专利
    • Optical element, polarization illumination device, and projector
    • 光学元件,偏振照明装置和投影仪
    • USRE40251E1
    • 2008-04-22
    • US11066243
    • 2005-02-25
    • Yasunori OgawaAkitaka YajimaTomiyoshi Ushiyama
    • Yasunori OgawaAkitaka YajimaTomiyoshi Ushiyama
    • G02B5/30G02B27/28
    • G02B27/285G02B27/283H04N9/3105H04N9/3167
    • Two polarization conversion element arrays are disclosed. Each polarization conversion element array is composed of a plurality of polarization conversion elements for converting light incident upon the polarization conversion element array to a linearly polarized light beam with a predetermined polarization direction. The plurality of polarization conversion elements are disposed opposite to each other with a predetermined space provided between at about the center of the light-outgoing surface of a lens array in the direction of arrangement. Of the light beams (s-polarized+p-polarized light beams) gathered by the lens array, light beam that is not incident upon the polarization conversion element and passes through the predetermined space is a light beam including a predetermined polarized light beam (s-polarized light beam) that is primarily made to leave the array 320a and an ineffective polarized light beam (p-polarized light beam). Of the light passing through and leaving the space, the required polarized light beam alone can be made to leave as an effective light beam by providing a polarization plate or the like at the light-outgoing side of the space.
    • 公开了两个偏振转换元件阵列。 每个偏振转换元件阵列由多个偏振转换元件组成,用于将入射到偏振转换元件阵列上的光转换成具有预定偏振方向的线偏振光束。 多个偏振转换元件以设置在透镜阵列的光出射表面的中心附近的布置方向彼此相对地设置有预定的空间。 在由透镜阵列收集的光束(s偏振+ p偏振光束)中,未入射到偏振转换元件并通过预定空间的光束是包括预定偏振光束(s 偏振光束),其主要是离开阵列320a和无效偏振光束(p偏振光束)。 在通过和离开空间的光中,通过在空间的光出射侧提供偏振板等,可以使所需的偏振光束单独地留下作为有效的光束。
    • 8. 发明授权
    • Illuminating optical system and projection type display
    • 照明光学系统和投影型显示器
    • US06286961B1
    • 2001-09-11
    • US09341666
    • 1999-07-19
    • Yasunori Ogawa
    • Yasunori Ogawa
    • G03B2114
    • G02B27/0966G02B27/0905G02F1/1336G03B21/2073G03B21/208G03B33/12H04N5/74H04N9/3105H04N9/3152
    • An illumination system includes a light source and a dividing and superimposing section that divides a light flux emitted from the light source into a plurality of partial light fluxes and causes the plurality of partal light fluxes to be substantially superimposed on an illumination area, so as to enable a light-entering face of a specific optical apparatus to be illuminated as the illumination area. The dividing and superimposing section includes a light flux contraction section having the function of an afocal optical system that changes an incident light flux to an emitting light flux, the emitting light flux having a width narrower than the incident light flux. The afocal optical system accordingly decreases the incident angle of the plurality of partial light fluxes into the illumination area to be superimposed on the illumination area. This arrangement effectively decreases the incident angle into the illumination area without significantly lengthening the optical path between the light source and the illumination area in the illumination system including an optical integrator system.
    • 照明系统包括光源和将从光源发射的光束分成多个部分光束并使多个局部光束基本上重叠在照明区域上的分割和重叠部分,以便 使特定光学装置的光入射面能够照明为照明区域。 分割重叠部分包括具有将入射光束改变为发射光束的无焦光学系统的功能的光束收缩部分,该发射光束具有比入射光束窄的宽度。 因此,无焦光学系统将多个部分光束的入射角度降低到照明区域中以叠加在照明区域上。 这种布置有效地减小入射到照明区域的入射角,而不会使包括光学积分器系统的照明系统中的光源与照明区域之间的光路显着延长。
    • 10. 发明授权
    • Optical element, polarization illumination device, and projection
display apparatus
    • 光学元件,偏振照明装置和投影显示装置
    • US5978136A
    • 1999-11-02
    • US992012
    • 1997-12-17
    • Yasunori OgawaAkitaka YajimaTomiyoshi Ushiyama
    • Yasunori OgawaAkitaka YajimaTomiyoshi Ushiyama
    • G02B5/30G02B27/28G02F1/13G02F1/1335G02F1/13357G03B21/00H04N9/31
    • G02B27/285G02B27/283H04N9/3105H04N9/3167
    • Two polarization conversion element arrays are disclosed. Each polarization conversion element array is composed of a plurality of polarization conversion elements for converting light incident upon the polarization conversion element array to a linearly polarized light beam with a predetermined polarization direction. The plurality of polarization conversion elements are disposed opposite to each other with a predetermined space provided between at about the center of the light-outgoing surface of a lens array in the direction of arrangement. Of the light beams (s-polarized+p-polarized light beams) gathered by the lens array, light beam that is not incident upon the polarization conversion element and passes through the predetermined space is a light beam including a predetermined polarized light beam (s-polarized light beam) that is primarily made to leave the array 320a and an ineffective polarized light beam (p-polarized light beam). Of the light passing through and leaving the space, the required polarized light beam alone can be made to leave as an effective light beam by providing a polarization plate or the like at the light-outgoing side of the space.
    • 公开了两个偏振转换元件阵列。 每个偏振转换元件阵列由多个偏振转换元件组成,用于将入射到偏振转换元件阵列上的光转换成具有预定偏振方向的线偏振光束。 多个偏振转换元件以设置在透镜阵列的光出射表面的中心附近的布置方向彼此相对地设置有预定的空间。 在由透镜阵列收集的光束(s偏振+ p偏振光束)中,未入射到偏振转换元件并通过预定空间的光束是包括预定偏振光束(s 偏振光束),其主要是离开阵列320a和无效偏振光束(p偏振光束)。 在通过和离开空间的光中,通过在空间的光出射侧提供偏振板等,可以使所需的偏振光束单独地留下作为有效的光束。