Optical scanning system

Details Optical scanning system Optical scanning system

1979-06-01

1984-09-11

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235454, 235487, 235494, G06K 710

Patent

active

044712170

ABSTRACT:
An optical reading system employing a commercially available line scanning camera which is sensitive to the ink employed in preprinted document formats. The sensitivity of a line scan camera to the preprinted ink formats is minimized by employing an incandescent document illuminating source, a lens system for the line scan camera which is optimized for use in the near infrared region, and an infrared pass filter positioned between the line scan camera lens system and the document to filter the light reflected from the document.

REFERENCES:
patent: 2975285 (1961-03-01), Palmer
patent: 3163758 (1964-12-01), Treacy
patent: 3663752 (1972-05-01), Froschle
patent: 3801775 (1974-04-01), Acker
patent: 3808406 (1974-04-01), Oberg et al.

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