Optical adjustment of working range and beam spot size in...

Details Optical adjustment of working range and beam spot size in... Optical adjustment of working range and beam spot size in...

2007-09-04

2007-09-04

Le, Uyen-Chau N (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S455000

Reexamination Certificate

active

10849084

ABSTRACT:
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.

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