Optical scanner with beam directing holograms at window

Details Optical scanner with beam directing holograms at window Optical scanner with beam directing holograms at window

1984-02-13

1986-05-27

Corbin, John K.

Registers

Coded record sensors

Particular sensor structure

350 37, 35016217, 350164, 235457, G02B 2717

Patent

active

045912360

ABSTRACT:
An optical scanner is improved by securing beam directing holograpic films to the transparent scanner window. The films alter the paths of beams at the window to provide scanning beams suitable for rear or side scanning of label-carrying products. A vertical scanning beam, which sweeps a path parallel to the window's leading edge, might be used to detect the approach of a product to be scanned.

REFERENCES:
patent: 3773401 (1973-11-01), Douklias et al.
patent: 4235504 (1980-11-01), Ikeda et al.
patent: 4415224 (1983-11-01), Dickson

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