发明授权
US6142379A Compact bar code scanner with scan mirror jointly movable with drive
component
失效
紧凑型条码扫描器,扫描镜可与驱动部件共同移动
- 专利标题: Compact bar code scanner with scan mirror jointly movable with drive component
- 专利标题(中): 紧凑型条码扫描器,扫描镜可与驱动部件共同移动
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申请号: US407191申请日: 1999-09-28
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公开(公告)号: US6142379A公开(公告)日: 2000-11-07
- 发明人: Simon Bard , Asklod Strantienco , Joseph Katz , Boris Matillsky
- 申请人: Simon Bard , Asklod Strantienco , Joseph Katz , Boris Matillsky
- 申请人地址: NY Holtsville
- 专利权人: Symbol Technologies, Inc.
- 当前专利权人: Symbol Technologies, Inc.
- 当前专利权人地址: NY Holtsville
- 主分类号: G06K7/10
- IPC分类号: G06K7/10 ; G06F1/16 ; G06F3/033
摘要:
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.
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