发明授权
US5286961A Bar code reader producing two groups of vertical scan lines and two
groups of inclined scan lines on a plane normal to the read window
失效
条形码阅读器在垂直于读取窗口的平面上产生两组垂直扫描线和两组倾斜扫描线
- 专利标题： Bar code reader producing two groups of vertical scan lines and two groups of inclined scan lines on a plane normal to the read window
- 专利标题（中）： 条形码阅读器在垂直于读取窗口的平面上产生两组垂直扫描线和两组倾斜扫描线
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申请号： US890289申请日： 1992-05-26
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公开(公告)号： US5286961A公开(公告)日： 1994-02-15
- 发明人: Shinji Saegusa
- 申请人： Shinji Saegusa
- 申请人地址： JPX Tokyo
- 专利权人： Tokyo Electric Co., Ltd.
- 当前专利权人： Tokyo Electric Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX2-131269 19900523; JPX3-056789 19910320
- 主分类号： G06K7/10
- IPC分类号： G06K7/10
摘要：
In a bar code reading apparatus, a laser beam emitted from a laser beam source disposed in a casing is reflected by a rotational mirror to scan a bar code. The reflected laser beam is reflected by a fixed scan mirror having four mirror members continually arranged with given angles therebetween, and the resultant beams are irradiated outward through a read window formed in the casing. Multiple scan lines in multiple directions are obtained on a normal plane to the read window. These scan lines consist of two groups of vertical scan lines in the normal plane, and two groups of oblique scan lines inclined at a given angle with respect to the horizontal direction.
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