发明名称 |
Holographic laser scanning system employing holographic scanning disc having dual-fringe contrast regions for optimized laser beam scanning and light collection operations |
摘要 |
Holographic laser scanning system employing a holographic scanning disc with holographic facets having dual-fringe contrast regions optimized for scanning and light collection operations. In the preferred embodiments, the first region of each holographic facet is optimized for laser light having a first polarization state, whereas the second portion thereof is optimized for laser light having a second polarization state. The dual-fringe contrast scanning disc construction of the present invention provides for improved laser scanning efficiency during scanning operation, and improved laser light collection efficiency during laser light collection/detection operation within the system.
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申请公布号 |
US6003772(A) |
申请公布日期 |
1999.12.21 |
申请号 |
US19970941716 |
申请日期 |
1997.09.30 |
申请人 |
METROLOGIC INSTRUMENTS, INC. |
发明人 |
DICKSON, LEROY;GROOT, JOHN;KNOWLES, CARL HARRY;AMUNDSEN, THOMAS |
分类号 |
G02B26/10;G06K7/10;G06K7/14;G06K17/00;G07G1/00;(IPC1-7):G06K7/10 |
主分类号 |
G02B26/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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