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    Laser focusing aperture and method
    51.
    发明授权
    Laser focusing aperture and method 失效
    激光聚焦孔径和方法

    公开(公告)号：US06454167B1

    公开(公告)日：2002-09-24

    申请号：US09373279

    申请日：1999-08-12

    申请人： Edward Barkan ,  Chinh Tan ,  Vikram Bhargava ,  Miklos Stern

    发明人： Edward Barkan ,  Chinh Tan ,  Vikram Bhargava ,  Miklos Stern

    IPC分类号： G06K710

    CPC分类号： G06K7/10881 ,  G02B7/32 ,  G06K7/10633 ,  G06K2207/1011

    摘要： Light is focused in a system for electro-optically scanning and reading bar code symbols by an aperture stop having a first optical portion for optically modifying a first part of a light beam to have a beam cross-section of a known size within a depth of field in which a symbol to be read is scanned by the first beam part, and a second light-transmissive, optical portion bounding the first portion and operative for optically modifying and directing a second part of the light beam away from the first part.

    摘要翻译： 光聚焦在用于电光学扫描和读取条形码符号的系统中，所述系统具有孔径光阑，所述孔径光阑具有第一光学部分，用于光学地修饰光束的第一部分，以具有已知尺寸的光束横截面， 其中待读取的符号由第一光束部分扫描;以及第二透光光学部分，其界定第一部分并且用于光学修改并将光束的第二部分引导离开第一部分。

    Arrangement for and method of improving image quality, especially for image projection arrangements
    55.
    发明授权
    Arrangement for and method of improving image quality, especially for image projection arrangements 有权
    提高图像质量的方法和方法，特别是图像投影安排

    公开(公告)号：US07433108B2

    公开(公告)日：2008-10-07

    申请号：US11789735

    申请日：2007-04-25

    申请人： Chinh Tan ,  Miklos Stern

    发明人： Chinh Tan ,  Miklos Stern

    IPC分类号： G02B26/08

    CPC分类号： H04N9/3129 ,  G03B21/2073 ,  G03B33/12

    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 brightness of the illuminated pixels is enhanced by combining constituent laser beams of the same wavelength. The contrast of the illuminated pixels is improved by sweeping a composite beam across a polarized screen, and by making the polarizations of all the constituent laser beams of the composite beam the same.

    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。 通过组合相同波长的组成激光束来增强照明像素的亮度。 通过扫描复合光束穿过偏振屏幕并通过使复合光束的所有组成激光束的偏振相同来改善照明像素的对比度。

    Photodiode with improved performance in ambient light
    57.
    发明申请
    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：US20080203164A1

    公开(公告)日：2008-08-28

    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： G06K7/10

    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。