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    • 2. 发明授权
    • Auto-focusing method for an automatic data collection device, such as an image acquisition device
    • 自动数据采集装置的自动聚焦方法,如图像采集装置
    • US08328099B2
    • 2012-12-11
    • US12391078
    • 2009-02-23
    • Serge ThuriesLaurent LognonVincent Bessettes
    • Serge ThuriesLaurent LognonVincent Bessettes
    • G03B3/10
    • G02B7/32H04N5/23212
    • An automatic data collection device includes an automatic focusing feature. The automatic focusing feature is based on a type of triangulation technique, which determines an optimum position of an imaging lens in order to obtain an optimally focused image. The position of the imaging lens may be adjusted until the imaging lens is at the optimum position. A pair of aiming beams is separated by a distance. The optimum position of the imaging lens (and/or the amount of displacement of the imaging lens that is needed to reach the optimum position) can be determined based on a relation that involves the distance between the two aiming beams, a focal length of the imaging lens, and a distance between “spots” that are respectively generated on an image plane (such as on an image sensor) by the pair of aiming beams.
    • 自动数据采集装置包括自动聚焦功能。 自动对焦功能基于一种三角测量技术,其确定成像透镜的最佳位置以获得最佳聚焦图像。 可以调整成像透镜的位置,直到成像透镜处于最佳位置。 一对瞄准光束被隔开一段距离。 可以基于涉及两个瞄准光束之间的距离的关系来确定成像透镜的最佳位置(和/或达到最佳位置所需的成像透镜的位移量),焦距 成像透镜,以及通过一对瞄准光束分别在图像平面(诸如图像传感器)上产生的光点之间的距离。
    • 5. 发明申请
    • AUTO-FOCUSING METHOD FOR AN AUTOMATIC DATA COLLECTION DEVICE, SUCH AS AN IMAGE ACQUISITION DEVICE
    • 用于自动数据采集设备的自动聚焦方法,如图像采集设备
    • US20090206158A1
    • 2009-08-20
    • US12391078
    • 2009-02-23
    • Serge ThuriesLaurent LognonVincent Bessettes
    • Serge ThuriesLaurent LognonVincent Bessettes
    • G06K7/10
    • G02B7/32H04N5/23212
    • An automatic data collection device includes an automatic focusing feature. The automatic focusing feature is based on a type of triangulation technique, which determines an optimum position of an imaging lens in order to obtain an optimally focused image. The position of the imaging lens may be adjusted until the imaging lens is at the optimum position. A pair of aiming beams is separated by a distance. The optimum position of the imaging lens (and/or the amount of displacement of the imaging lens that is needed to reach the optimum position) can be determined based on a relation that involves the distance between the two aiming beams, a focal length of the imaging lens, and a distance between “spots” that are respectively generated on an image plane (such as on an image sensor) by the pair of aiming beams.
    • 自动数据采集装置包括自动聚焦功能。 自动对焦功能基于一种三角测量技术,其确定成像透镜的最佳位置以获得最佳聚焦图像。 可以调整成像透镜的位置,直到成像透镜处于最佳位置。 一对瞄准光束被隔开一段距离。 可以基于涉及两个瞄准光束之间的距离的关系来确定成像透镜的最佳位置(和/或达到最佳位置所需的成像透镜的位移量),焦距 成像透镜,以及通过一对瞄准光束分别在图像平面(例如图像传感器)上产生的“光点”之间的距离。