Method and apparatus for adjusting focus in a symbology reader

Details Method and apparatus for adjusting focus in a symbology reader Method and apparatus for adjusting focus in a symbology reader

2007-05-04

2009-06-23

Hess, Daniel A (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S435000, C235S462010, C235S462410

Reexamination Certificate

active

07549582

ABSTRACT:
A symbology reader has an adjustable focus mechanism that permits a plurality of focus settings by rotating a lens assembly threadedly engaged in the symbology reader housing. A focus adjustment collar having a plurality of key slots engage in a key when the cover to the symbology reader is attached. The rotation of the adjustment collar on the lens assembly is limited to not more than a single revolution through the use of cooperative stops that are fixed relation to the lens and housing respectively.

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