Monitoring light beam position in electro-optical readers and image projectors
    34.
    发明申请
    Monitoring light beam position in electro-optical readers and image projectors 有权
    监控光电读取器和图像投影仪中的光束位置

    公开(公告)号:US20070181688A1

    公开(公告)日:2007-08-09

    申请号:US11593215

    申请日:2006-11-06

    IPC分类号: G06K7/10

    CPC分类号: G06K7/10702 G06K7/10683

    摘要: An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

    摘要翻译: 用于确定电光读取器,图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器,以及电光反馈组件,其可操作地连接到 驱动器,用于在光束移动期间光学检测扫描线位置,并且用于在扫描频率处产生反馈信号,反馈信号指示扫描线位置。 消除驱动器中的反馈线圈,以避免驱动器中多个线圈之间的电磁耦合。

    Image Projection Arrangement with Divergent Light Beams
    38.
    发明申请
    Image Projection Arrangement with Divergent Light Beams 有权
    图像投影布置与发散光束

    公开(公告)号:US20110090467A1

    公开(公告)日:2011-04-21

    申请号:US12978914

    申请日:2010-12-27

    IPC分类号: G03B21/28 G02B26/10 F21V7/04

    摘要: A lightweight, compact image projection module has a laser package having a common exit port, and a plurality of lasers mounted in the package and operative for emitting a plurality of laser beams of different wavelengths through the common exit port. An optical assembly focuses the laser beams exiting the common exit port, and includes a common focusing lens through which the laser beams pass along respective paths that are in angular misalignment. An optical corrector element in at least one of the paths corrects the misalignment to produce aligned beams. A scanner sweeps the aligned beams in a pattern of scan lines, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the aligned beams to produce the image.

    摘要翻译: 一种轻巧紧凑的图像投影模块具有具有公共出口的激光器封装和安装在封装中的多个激光器,并用于通过公共出口发射多个不同波长的激光束。 光学组件将离开公共出口的激光束聚焦,并且包括公共聚焦透镜,激光束沿着相对于角度未对准的路径通过。 至少一个路径中的光学校正元件校正了未对准以产生对准的光束。 扫描器以扫描线的图案扫描对准的光束,每个扫描线具有多个像素。 控制器使所选择的像素被对准的光束照亮并变得可见,以产生图像。

    Color image projection system and method
    40.
    发明授权
    Color image projection system and method 失效
    彩色图像投影系统和方法

    公开(公告)号:US07511771B2

    公开(公告)日:2009-03-31

    申请号:US11263488

    申请日:2005-10-31

    IPC分类号: H04N9/28 G03B21/26

    摘要: An image projection system projects an image on a projection screen having phosphor particles for converting incident violet light into green light which, together with red and blue light, creates the image in full color. The phosphor particles are bound in a binding material whose index of refraction matches the index of refraction of the phosphor particles to reduce back scattering of light.

    摘要翻译: 图像投影系统将具有用于将入射的紫色光转换成荧光体颗粒的投影屏幕上的图像投射到绿色光中,其与红色和蓝色光一起全色地产生图像。 荧光体颗粒被束缚在粘合材料中,其折射率与荧光体颗粒的折射率匹配以减少光的反向散射。