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98 条记录 (耗时 0.036 秒)

    Monitoring light beam position in electro-optical readers and image projectors
    35.
    发明授权
    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：US07367510B2

    公开(公告)日：2008-05-06

    申请号：US11593215

    申请日：2006-11-06

    申请人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick F. Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

    发明人： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick F. Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

    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。

    Large size image projection
    37.
    发明申请
    Large size image projection 有权
    大尺寸图像投影

    公开(公告)号：US20060087628A1

    公开(公告)日：2006-04-27

    申请号：US10975889

    申请日：2004-10-27

    申请人： Paul Dvorkis ,  Ron Goldman ,  Chinh Tan ,  Dmitriy Yavid ,  Frederick Wood

    发明人： Paul Dvorkis ,  Ron Goldman ,  Chinh Tan ,  Dmitriy Yavid ,  Frederick Wood

    IPC分类号： G03B21/00

    CPC分类号： H04N9/3129 ,  G03B21/208 ,  G03B35/18 ,  G03B37/04

    摘要： A plurality of image projection modules is operative for causing selected pixels in overlapping raster patterns to be illuminated to produce a large size image of high resolution of VGA quality in monochrome or color. The selected pixels in an overlap region of the patterns are illuminated at a lesser intensity to provide uniform brightness over the image. Multiple single mode lasers, or a multimode laser with an aperture stop, are employed to increase laser output power. Speckle noise is reduced by controlling the optical transmission characteristic of a projection screen. Three-dimensional images are generated by moving the screen. Cross-coupling between drive and feedback mechanisms in image projection is reduced for better image quality.

    摘要翻译： 多个图像投影模块可操作用于使重叠的光栅图案中的所选像素被照亮以产生单色或彩色的VGA质量的高分辨率的大尺寸图像。 图案的重叠区域中的所选择的像素以较小的强度照亮以在图像上提供均匀的亮度。 采用多单模激光器或具有孔径光阑的多模激光器来增加激光输出功率。 通过控制投影屏的光传输特性来减少斑点噪声。 通过移动屏幕生成三维图像。 降低图像投影中的驱动和反馈机制之间的交叉耦合，以获得更好的图像质量。

    Photodiode with improved performance in ambient light
    39.
    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

    申请人： Costanzo Difazio ,  Dmitriy Yavid ,  Miklos Stern ,  Chinh Tan ,  Askold Strat ,  Daniel Gonzalez

    发明人： Costanzo Difazio ,  Dmitriy Yavid ,  Miklos Stern ,  Chinh Tan ,  Askold Strat ,  Daniel Gonzalez

    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。

    OPTICAL FEEDBACK FOR HIGH SPEED SCAN MIRROR
    40.
    发明申请
    OPTICAL FEEDBACK FOR HIGH SPEED SCAN MIRROR 审中-公开
    高速扫描镜的光学反馈

    公开(公告)号：US20090251670A1

    公开(公告)日：2009-10-08

    申请号：US12061852

    申请日：2008-04-03

    申请人： Miklos Stern ,  Chinh Tan ,  Dmitriy Yavid

    发明人： Miklos Stern ,  Chinh Tan ,  Dmitriy Yavid

    IPC分类号： G03B21/28 ,  G01B11/02

    CPC分类号： G01B11/02 ,  G01B9/02007 ,  G01B9/02014 ,  G01B9/02022 ,  G01B9/0209 ,  G01B9/02094 ,  G01B2290/45 ,  G01B2290/65 ,  G03B21/28

    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). A light source (502, 602, 702, 802) provides light to the scan mirror (130); and circuitry analyzing the light reflected to determine the position of the oscillating portion (204).

    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）。 光源（502,602,702,802）向扫描镜（130）提供光; 以及分析反射的光以确定振荡部分（204）的位置的电路​​。