OPTICAL CODE READER HAVING VARIABLE DEPTH OF FIELD
摘要
Several optical systems for imaging engines of imaging optical code readers are disclosed. Each optical system includes the abilities to change the dept h of field of the imaging field and to adjust a focus quality of the imaging field. The disclosed structures for changing the depth of field of the disclosed optical systems allow for the automatic or manual selection of one of a plurality of depths of field.
申请公布号
CA2508602(C)
申请公布日期
2008.09.30
申请号
CA20032508602
申请日期
2003.12.17
申请人
SYMBOL TECHNOLOGIES, INC.
发明人
DVORKIS, PAUL;SHI, TSI DAVID;CARLSON, BRAD;BREYTMAN, ALEX;KRICHEVER, MARK