| 发明名称 |
OPTICAL ADJUSTMENT OF WORKING RANGE AND BEAM SPOT SIZE IN ELECTRO-OPTICAL READERS |
| 摘要 |
Working range and laser beam cross-section are adjusted in an electro-optical reader for reading indicia by applying control voltages to a pair of variable lenses to change the shape of a liquid therein. An aperture stop maintains a constant beam cross-section as an input to one of the lenses. |
| 申请公布号 |
EP1763819(A2) |
申请公布日期 |
2007.03.21 |
| 申请号 |
EP20050750301 |
申请日期 |
2005.05.16 |
| 申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
BARKAN, EDWARD |
| 分类号 |
G02B26/10;G06K7/10;G02B3/14;G02B26/00;G02B26/02;G02B26/08;G02B27/09;G02F1/00;G03B3/10;G06K7/14 |
主分类号 |
G02B26/10 |
| 代理机构 |
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代理人 |
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