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    • 5. 发明授权
    • Compact bar code scanner with scan mirror jointly movable with drive
component
    • 紧凑型条码扫描器,扫描镜可与驱动部件共同移动
    • US6142379A
    • 2000-11-07
    • US407191
    • 1999-09-28
    • Simon BardAsklod StrantiencoJoseph KatzBoris Matillsky
    • Simon BardAsklod StrantiencoJoseph KatzBoris Matillsky
    • G06K7/10G06F1/16G06F3/033
    • G06F1/163G06F3/0346G06K7/10564G06K7/10584G06K7/10653G06K7/10881G06K7/10891G06K7/1098G06F2203/0331G06K2007/10534G06K2207/1016
    • Several different embodiments are disclosed of a simple, compact bar code scanner which is capable of scanning in any one of several modes, a linear scan mode for scans along a single axis, an omnidirectional scan mode for scans with consecutive scan lines which are angularly displaced relative to each other, or a raster scan mode for scans with consecutive scan lines along a first scan axis which are displaced relative to each other along a second perpendicular axis. In a preferred embodiment, the compact bar code scanner is used in a small housing mounted on an index finger of an operator such that the natural pointing direction of the index finger aims the scanner. In one embodiment, a high frequency flexural member, with a scanning mirror and permanent magnet mounted thereon, is supported by a low frequency flexural member. An x drive coil is positioned by the permanent magnet, and with an applied high frequency x drive signal, causes the high frequency flexural member, with the permanent magnet means and scanning mirror mounted thereon, to torsionally oscillate at the frequency of the x drive signal. A y drive coil is also positioned by the permanent magnet, and with an applied low frequency y drive signal, causes the low frequency flexural member to oscillate to cause low frequency y scanning of the scanning mirror, thereby resulting in a raster scan pattern. With an applied high frequency y drive signal, the y coil causes the high frequency flexural member to oscillate at a high frequency to cause high frequency y scanning of the mirror, thereby resulting in an omnidirectional scan patterns.
    • 公开了一种简单,紧凑的条形码扫描器的几个不同实施例,该扫描器能够以多种模式中的任何一种扫描,用于沿着单个轴进行扫描的线性扫描模式,用于扫描的全向扫描模式,其中连续的扫描线被角位移 或者用于沿着沿第一垂直轴相对于彼此移位的沿着第一扫描轴的连续扫描线进行扫描的光栅扫描模式。 在优选实施例中,紧凑型条形码扫描器用于安装在操作者的食指上的小壳体中,使得食指的自然指向方向瞄准扫描仪。 在一个实施例中,具有安装在其上的扫描镜和永磁体的高频弯曲构件由低频弯曲构件支撑。 x驱动线圈由永磁体定位,并且施加的高频x驱动信号使得安装有永久磁铁装置和扫描反射镜的高频弯曲部件以x驱动信号的频率扭转振荡 。 y驱动线圈也由永磁体定位,并且施加的低频y驱动信号使得低频弯曲构件振荡以引起扫描反射镜的低频y扫描,从而导致光栅扫描图案。 利用施加的高频y驱动信号,y线圈使得高频弯曲构件以高频振荡,从而导致反射镜的高频y扫描,从而导致全向扫描图案。