Louvered light collection arrangement in electro-optical reading

Details Louvered light collection arrangement in electro-optical reading Louvered light collection arrangement in electro-optical reading

1995-05-10

1996-12-03

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

235 47L, 250237R, G06K 716

Patent

active

055810691

ABSTRACT:
A louver is mounted adjacent a sensor in a housing of a laser scanning head of a system for electro-optically reading bar code symbols. The louver includes a plurality of mutually parallel, permanently-open slots. The slats are inclined to allow more light from far-out symbols to reach the sensor as compared to close-in symbols.

REFERENCES:
patent: 4409470 (1983-10-01), Shepard et al.
patent: 4673805 (1987-06-01), Shepard et al.

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