Projection optical system and image display apparatus
    55.
    发明授权
    Projection optical system and image display apparatus 有权
    投影光学系统和图像显示装置

    公开(公告)号:US08950874B2

    公开(公告)日:2015-02-10

    申请号:US13611578

    申请日:2012-09-12

    申请人: Hibiki Tatsuno

    发明人: Hibiki Tatsuno

    IPC分类号: G03B21/28 G03B21/20 G02B17/08

    摘要: A projection optical system for use in an image display apparatus having an illumination optical system applying light from a light source, and an image display device receiving the light from the illumination optical system to form a projection image includes a projector lens composed of plural lenses, a first mirror, and a second mirror formed of a concave mirror. The projection optical system is configured to project the projection image onto a projection surface. A projection luminous flux passing through the projector lens to be incident on the first mirror is a luminous flux exhibiting divergence. The projection luminous flux reflected off the second mirror after having reflected off the first mirror is converged once, and the once converged projection luminous flux is projected onto the projection surface. A lens surface of a lens located closest to the first mirror among the lenses of the projector lens is convex.

    摘要翻译: 一种用于具有从光源施加光的照明光学系统的图像显示装置的投影光学系统和接收来自照明光学系统的光以形成投影图像的图像显示装置包括由多个透镜构成的投影透镜, 第一反射镜和由凹面镜形成的第二反射镜。 投影光学系统被配置为将投影图像投影到投影表面上。 入射到第一反射镜上的通过投影透镜的投影光束是表现出发散的光束。 在从第一反射镜反射出的第二反射镜反射的投影光束被会聚一次,并且将一次会聚的投影光束投影到投影面上。 在投影透镜的透镜中位于最靠近第一反射镜的透镜的透镜表面是凸的。

    Optical scanning device and image forming apparatus
    56.
    发明授权
    Optical scanning device and image forming apparatus 有权
    光学扫描装置和图像形成装置

    公开(公告)号:US08929412B2

    公开(公告)日:2015-01-06

    申请号:US14160744

    申请日:2014-01-22

    IPC分类号: H01S3/10 G02B26/12 H01S5/00

    摘要: An optical scanning device includes a vertical-cavity surface-emitting laser light source that emits laser beams perpendicular to a top surface thereof; a first optical system that couples the beams from the light source; a deflecting unit that deflects the beams; a second optical system that guides the beams from the first optical system to the deflecting unit; a third optical system that focuses the beams deflected by the deflecting unit into an optical spot on a scanned surface; and a light-quantity adjusting element disposed between the light source and the deflecting unit and having a substrate formed of a first and second surfaces. The first surface of the light-quantity adjusting element is coated with neutral density coating and the second surface is coated with antireflection coating so that reflectance of the second surface is made smaller than reflectance of the first surface.

    摘要翻译: 光学扫描装置包括发射垂直于其顶表面的激光束的垂直腔表面发射激光光源; 耦合来自光源的光束的第一光学系统; 偏转单元,其使梁偏转; 将光束从第一光学系统引导到偏转单元的第二光学系统; 第三光学系统,其将由偏转单元偏转的光束聚焦到扫描表面上的光点中; 以及光量调节元件,其设置在所述光源和所述偏转单元之间,并具有由第一表面和所述第二表面形成的基板。 光量调节元件的第一表面涂覆有中性密度涂层,并且第二表面涂覆有抗反射涂层,使得第二表面的反射率小于第一表面的反射率。

    Optical scanning device and image forming apparatus

    公开(公告)号:US08837027B2

    公开(公告)日:2014-09-16

    申请号:US14177860

    申请日:2014-02-11

    申请人: Hibiki Tatsuno

    发明人: Hibiki Tatsuno

    IPC分类号: G02B26/08 G02B26/12

    摘要: An optical scanning device includes: a light source including a plurality of light-emitting elements; a deflector that defects light beams output from the light source; a scanning optical system that condenses the light beams deflected on the deflector onto a surface to be scanned, and includes at least one resin scanning lens and at least one folding mirror disposed behind the at least one resin scanning lens; a light-receiving element to which part of the light beams, which is deflected on the deflector but not used for scanning the surface, enters not via the at least one folding mirror as light-amount monitoring light beams; and a controller that controls a driving signal for the light-emitting elements based on an output signal from the light-receiving element.

    PROJECTION OPTICAL SYSTEM, AND IMAGE DISPLAY DEVICE USING THE SAME
    58.
    发明申请
    PROJECTION OPTICAL SYSTEM, AND IMAGE DISPLAY DEVICE USING THE SAME 有权
    投影光学系统和使用其的图像显示装置

    公开(公告)号:US20130107232A1

    公开(公告)日:2013-05-02

    申请号:US13659104

    申请日:2012-10-24

    申请人: Hibiki Tatsuno

    发明人: Hibiki Tatsuno

    IPC分类号: G03B21/28 G02B27/18

    摘要: A projection optical system that is used for an image display device having an image display element, includes a refractive optical system that includes a plurality of lenses; an aperture that limits a quantity of light led to the refractive optical system from the image display element; a lens group that is arranged between the image display element and the aperture, has a positive refractive power, and has low field curvature with respect to the image display element; and a mirror optical system that has a concave mirror arranged on an opposite side from the image display element across the refractive optical system, the aperture, and the lens group.

    摘要翻译: 一种用于具有图像显示元件的图像显示装置的投影光学系统,包括:折射光学系统,其包括多个透镜; 限制从图像显示元件导致折射光学系统的光量的光圈; 布置在图像显示元件和孔之间的透镜组具有正折射光焦度,并且相对于图像显示元件具有低场曲率; 以及镜面光学系统,其具有布置在穿过折射光学系统,孔径和透镜组的图像显示元件的相对侧上的凹面镜。

    Illumination unit, image read apparatus, image formation apparatus
    59.
    发明授权
    Illumination unit, image read apparatus, image formation apparatus 有权
    照明单元,图像读取装置,图像形成装置

    公开(公告)号:US08081355B2

    公开(公告)日:2011-12-20

    申请号:US12035782

    申请日:2008-02-22

    IPC分类号: H04N1/04

    CPC分类号: G03B27/54

    摘要: An illumination unit for use in an image read apparatus is provided which illuminates a surface of an original document with illumination light, reads an image of the original document by a light receiving element, and adjusts an amount of specular light reflection from the surface of the original document on a light receiving plane of the light receiving element by adjusting at least one of an incident angle of the illumination light and a divergence thereof. It includes a plurality of light source units emitting the illumination light and arranged in a direction so that a direction in which intensity of light emitted from at least one of the light source units closest to a center of the arrangement thereof is to be highest makes a non-perpendicular angle with the direction of arrangement.

    摘要翻译: 提供一种用于图像读取装置的照明单元,其利用照明光照亮原稿的表面,通过光接收元件读取原始文档的图像,并且从该表面起调整镜面光反射的量 通过调节照明光的入射角和其散度中的至少一个,在光接收元件的光接收面上的原稿。 它包括多个光源单元,其发射照明光并沿着使从最靠近其布置中心的至少一个光源单元发射的光的强度最高的方向布置成使得 非垂直角度与排列方向。

    Original-document illumination apparatus, image reading apparatus, color-original-document reading apparatus and image forming apparatus
    60.
    发明授权
    Original-document illumination apparatus, image reading apparatus, color-original-document reading apparatus and image forming apparatus 有权
    原稿照明装置,图像读取装置,彩色原稿读取装置和图像形成装置

    公开(公告)号:US07957039B2

    公开(公告)日:2011-06-07

    申请号:US11898264

    申请日:2007-09-11

    申请人: Hibiki Tatsuno

    发明人: Hibiki Tatsuno

    IPC分类号: H04N1/04

    摘要: An original-document illumination apparatus includes an illuminated face on which an original-document is placed. The original-document illumination apparatus also includes a light-source unit having a plurality of light-emitting elements which are arranged along the main-scanning direction of the original-document and which illuminate the original-document. The light source unit is movable in a sub-scanning direction that is orthogonal to the main-scanning direction. In addition, the original-document illumination apparatus includes a lens array disposed between the illuminated face and the light-source unit, and having a plurality of convergent lenses. A luminous flux from each of the light-emitting elements of the light-source unit is radiated onto the illuminated face through each of the lenses of the lens array.

    摘要翻译: 原稿照明装置包括其上放置有原稿的照明面。 原稿照明装置还包括具有多个发光元件的光源单元,该多个发光元件沿原稿的主扫描方向排列并照亮原始文件。 光源单元可在与主扫描方向正交的副扫描方向上移动。 此外,原稿照明装置包括设置在照明面和光源单元之间并具有多个会聚透镜的透镜阵列。 来自光源单元的每个发光元件的光束通过透镜阵列的每个透镜照射到照明面上。