CCD-based bar code scanner with optical funnel

Details CCD-based bar code scanner with optical funnel CCD-based bar code scanner with optical funnel

1996-01-25

1999-01-12

Pitts, Harold

Registers

Coded record sensors

Particular sensor structure

235454, G06K 710

Patent

active

058594183

ABSTRACT:
An optical funnel evenly distributes light from an array of LEDs to a bar code. A support member with a central aperture holds the LEDs. A shroud with an angled reflective interior surface spreads the light from the LEDs to the bar code. The funnel also optically isolates the LEDs from the photodector in the scanner.

REFERENCES:
patent: 5406060 (1995-04-01), Gitin
patent: 5449892 (1995-09-01), Yamada
patent: 5585615 (1996-12-01), Iwanami et al.
patent: 5585616 (1996-12-01), Roxby et al.
patent: 5600116 (1997-02-01), Seo et al.
patent: 5623137 (1997-04-01), Powers et al.

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