发明名称 |
LASER FOCUSING APERTURE AND METHOD |
摘要 |
Light is focused in a system for electro-optically scanning and reading bar code symbols by an aperture stop having a first optical portion for optically modifying a first part of a light beam to have a beam cross-section of a known size within a depth of field in which a symbol to be read is scanned by the first beam part, and a second light-transmissive, optical portion bounding the first portion and operative for optically modifying and directing a second part of the light beam away from the first part. |
申请公布号 |
EP1119791(A4) |
申请公布日期 |
2005.09.07 |
申请号 |
EP20000953879 |
申请日期 |
2000.08.08 |
申请人 |
SYMBOL TECHNOLOGIES, INC. |
发明人 |
BARKAN, EDWARD;TAN, CHINH;BHARGAVA, VIKRAM;STERN, MIKLOS |
分类号 |
G02B3/08;G02B7/32;G02B26/10;G02B27/09;G06K7/10 |
主分类号 |
G02B3/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|