Focusing means for a symbol code reader

Details Focusing means for a symbol code reader Focusing means for a symbol code reader

1993-08-17

1994-11-15

Willis, Davis L.

Registers

Coded record sensors

Particular sensor structure

359216, G06K 700

Patent

active

053650492

ABSTRACT:
Focusing system for a bar code reader, comprising a lens system, wherein for varying the focal length the focusing system is provided with a reflector rotatable around a rotational axis, the reflector comprising at least one reflective surface normally intersecting the optical axis of the lens system, the point of intersection having a distance relative to the lens system which varies in response to the rotation of the reflector.

REFERENCES:
patent: 4560862 (1985-12-01), Eastman et al.

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