Focusing arrangement and method in electro-optical readers

Details Focusing arrangement and method in electro-optical readers Focusing arrangement and method in electro-optical readers

2005-06-14

2005-06-14

Le, Thien M. (Department: 2876)

Registers

Coded record sensors

Particular sensor structure

C235S462320, C235S462350

Reexamination Certificate

active

06905068

ABSTRACT:
Focusing in an electro-optical reader for reading indicia is obtained by moving one prism relative to another prism. An outgoing laser beam directed to indicia for reflection therefrom and/or return light reflected from the indicia is focused by the moving prism.

REFERENCES:
patent: 3720454 (1973-03-01), Inderhees
patent: 4855761 (1989-08-01), Hiiro
patent: 5002365 (1991-03-01), DeJager et al.
patent: 5227910 (1993-07-01), Khattak
patent: 5526167 (1996-06-01), Peng
patent: 5696610 (1997-12-01), Imoto

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