Optical pattern detecting apparatus

Details Optical pattern detecting apparatus Optical pattern detecting apparatus

1988-07-08

1989-09-12

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235462, G06K 710

Patent

active

048662585

ABSTRACT:
An optical pattern detecting apparatus has a ball lens (2), a light emitting device such as LED (3) and a light receptor such as photodiode (4), the latter two (3, 4) being disposed side-by-side with their optical axis substantially in parallel so that light from the light emitting device (3) passes is converged by the ball lens (2) onto barcode mark (7) and light reflected from said barcode mark (7) is guided by the same ball lens (2) to the light receptor (4); and by use of the ball lens, the apparatus can stably detect the barcode mark even at inclination of the apparatus to the surface of the barcode mark.

REFERENCES:
patent: 3784794 (1974-01-01), Allais

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