NON-PARALLAX OPTICAL AUTO-FOCUSING SYSTEM AND METHOD
    22.
    发明申请
    NON-PARALLAX OPTICAL AUTO-FOCUSING SYSTEM AND METHOD 审中-公开
    非PARALLAX光学自动聚焦系统和方法

    公开(公告)号:WO2005010802B1

    公开(公告)日:2005-05-12

    申请号:PCT/US2004023022

    申请日:2004-07-16

    Inventor: KRICHEVER MARK

    CPC classification number: G02B7/285 G06K7/10722 G06K7/10811

    Abstract: A non-parallax optical auto-focusing system focuses an image and determines a distance to an optical target without being prone to errors due to parallax. The system includes a first beam splitter, a second beam splitter, and a lens positioned therebetween on an optical axis. An aiming beam is directed towards an optical target and the redirected reflected beam is received by a quadrant sensor assembly for generating an output signal indicative of a parameter of the redirected reflected aiming beam. A processor receives the output signal and generates a control signal for actuating an actuator to reposition the lens. The system continues to position the lens until the measured parameter is within a predetermined range for optimally focusing the optical target on an image sensor. The distance to the optical target is determined by using a look-up table to correlate the measured parameter to the distance to the optical target.

    Abstract translation: 非视差光学自动对焦系统对图像进行聚焦并确定与光学目标的距离,而不会因视差而出现错误。 该系统包括第一分束器,第二分束器和位于光轴之间的透镜。 瞄准光束指向光学目标,并且重定向的反射光束被象限传感器组件接收,用于产生指示被重定向的反射瞄准光束的参数的输出信号。 处理器接收输出信号并产生用于致动致动器以重新定位透镜的控制信号。 系统继续定位透镜,直到测量的参数在预定范围内,以最佳地将光学对象聚焦在图像传感器上。 通过使用查找表来确定与光学目标的距离,以将测量的参数与到光学目标的距离相关联。

    24.
    发明专利
    未知

    公开(公告)号:DE60328127D1

    公开(公告)日:2009-08-06

    申请号:DE60328127

    申请日:2003-12-17

    Abstract: An image scanning device is provided which includes a system for determining the distance to a target to be scanned. The image scanning device includes an optical system and an image sensor array for focusing a light beam and imaging the target. The device preferably includes an automatic focusing system for adjusting the position of the optical system in order to adjust the focal point, and thereby focus the image of the target onto the image sensor array. In one embodiment of the image scanning device, the distance is determined by analyzing a collimated aiming pattern formed by collimating the light beam. In another embodiment, the distance is determined by analyzing a speckle pattern caused by the speckle effect upon the light beam hitting the target.

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