Arrangement for and method of increasing pixel symmetry, especially for image projection arrangements
    1.
    发明申请
    Arrangement for and method of increasing pixel symmetry, especially for image projection arrangements 有权
    增加像素对称性的方法和方法,特别是对于图像投影布置

    公开(公告)号:US20060262179A1

    公开(公告)日:2006-11-23

    申请号:US11131139

    申请日:2005-05-17

    IPC分类号: B41J2/435

    摘要: A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color. The pixels are rendered symmetrical in cross-section by aligning a narrow dimension of a beam spot of a laser beam along scan lines of the raster pattern.

    摘要翻译: 特别是用于安装在具有透光窗口的壳体中的轻巧紧凑的图像投影模块可操作用于使光栅图案中的所选像素被照亮以产生VGA质量的高分辨率图像。 通过沿着光栅图案的扫描线对准激光束的光束点的窄尺寸,使像素在横截面中呈现对称。

    Method and apparatus for controllably reducing power delivered by a laser projection display
    3.
    发明授权
    Method and apparatus for controllably reducing power delivered by a laser projection display 有权
    用于可控地减少由激光投射显示器传递的功率的方法和装置

    公开(公告)号:US07030353B2

    公开(公告)日:2006-04-18

    申请号:US10836813

    申请日:2004-04-30

    IPC分类号: G01J1/32

    CPC分类号: H04N9/3129

    摘要: A method and apparatus are provided to controllably reduce power of a laser projection display (LPD) in response to detecting a variation in a viewing surface. During the operation of the LPD, a controller 142 monitors laser light being reflected from the viewing surface. Since the controller 142 “knows” the amount of power that the LPD is being instructed to deliver, it may compare the known power to the reflected laser light to determine if a foreign object may be in the path of the laser light, and therefore, affecting the magnitude of the laser light. The controller 142 responds to detecting such an event by reducing power to the lasers.

    摘要翻译: 提供了一种方法和装置,用于响应于检测到观察表面的变化而可控地降低激光投影显示器(LPD)的功率。 在LPD的操作期间,控制器142监视从观察表面反射的激光。 由于控制器142“知道”LPD正在被指示传送的功率量,所以它可以将已知功率与反射的激光进行比较,以确定异物是否在激光的路径中,因此, 影响激光的大小。 控制器142通过减少对激光器的功率来响应来检测这种事件。

    Monitoring light beam position in electro-optical readers and image projectors
    4.
    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:US20060065735A1

    公开(公告)日:2006-03-30

    申请号:US10956693

    申请日:2004-09-30

    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。

    Method and apparatus for controllably reducing power delivered by a laser projection display
    5.
    发明申请
    Method and apparatus for controllably reducing power delivered by a laser projection display 有权
    用于可控地减少由激光投射显示器传递的功率的方法和装置

    公开(公告)号:US20050175048A1

    公开(公告)日:2005-08-11

    申请号:US10836813

    申请日:2004-04-30

    IPC分类号: G03B21/14 H04N9/31 H01S3/13

    CPC分类号: H04N9/3129

    摘要: A method and apparatus are provided to controllably reduce power of a laser projection display (LPD) in response to detecting a variation in a viewing surface. During the operation of the LPD, a controller 142 monitors laser light being reflected from the viewing surface. Since the controller 142 “knows” the amount of power that the LPD is being instructed to deliver, it may compare the known power to the reflected laser light to determine if a foreign object may be in the path of the laser light, and therefore, affecting the magnitude of the laser light. The controller 142 responds to detecting such an event by reducing power to the lasers.

    摘要翻译: 提供了一种方法和装置,用于响应于检测到观察表面的变化而可控地降低激光投影显示器(LPD)的功率。 在LPD的操作期间,控制器142监视从观察表面反射的激光。 由于控制器142“知道”LPD正在被指示传送的功率量,所以它可以将已知功率与反射的激光进行比较,以确定异物是否在激光的路径中,因此, 影响激光的大小。 控制器142通过减少对激光器的功率来响应来检测这种事件。

    Capacitive comb feedback for high speed scan mirror
    9.
    发明授权
    Capacitive comb feedback for high speed scan mirror 有权
    高速扫描镜的电容梳反馈

    公开(公告)号:US07997742B2

    公开(公告)日:2011-08-16

    申请号:US12054619

    申请日:2008-03-25

    IPC分类号: G03B21/00

    摘要: An image projection system (100) has a laser (102, 104, 106) providing at least one beam (103, 105, 107) to a scan mirror apparatus (130) for scanning the at least one beam (103, 105, 107) in two orthogonal directions (404, 406). The scan mirror (130) includes an oscillating portion (204, 904) disposed contiguous to a frame (202) and includes a reflective portion (218, 918) capable of reflecting the beam (103, 105, 107). Circuitry (500) is provided for measuring the capacitance between interdigitated teeth (212, 214, 912, 914) on the frame (202) and the oscillating portion (204, 904).

    摘要翻译: 图像投影系统(100)具有向扫描镜装置(130)提供至少一个光束(103,105,107)的激光器(102,104,106),用于扫描至少一个光束(103,105,107) )在两个正交方向(404,406)上。 扫描镜(130)包括邻近框架(202)设置并包括能够反射光束(103,105,107)的反射部分(218,918)的振荡部分(204,904)。 电路(500)被提供用于测量框架(202)上的叉指齿(212,214,912,914)与振荡部分(204,904)之间的电容。

    Photodiode with improved performance in ambient light
    10.
    发明授权
    Photodiode with improved performance in ambient light 有权
    光电二极管在环境光下具有改进的性能

    公开(公告)号:US07891570B2

    公开(公告)日:2011-02-22

    申请号:US11711982

    申请日:2007-02-28

    IPC分类号: G02B26/10

    CPC分类号: G06K7/10554 G06K7/10851

    摘要: An arrangement for improving performance of a sensor operative for collecting light from a target to generate a data signal in a presence of ambient light, includes a sample and hold circuit for operating the sensor during a sampling time period in which the sensor only collects the ambient light to generate an ambient signal, and during a holding time period in which the sensor collects both the ambient light and the light from the target to generate a composite signal comprised of the ambient signal and the data signal; and a subtracting circuit operative for subtracting the ambient signal from the composite signal to produce the data signal as an output.

    摘要翻译: 用于改善传感器的性能的装置,该传感器用于在存在环境光的情况下收集来自目标的光以产生数据信号,包括用于在传感器仅收集环境的采样时间段期间操作传感器的采样和保持电路 光产生环境信号,并且在传感器收集来自目标的环境光和光的保持时间段期间,以产生由环境信号和数据信号组成的复合信号; 以及减法电路,用于从复合信号中减去环境信号以产生数据信号作为输出。