Electro-optical scanner

Details Electro-optical scanner Electro-optical scanner

1991-08-09

1993-10-05

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

33707, G01B 1114

Patent

active

052510123

ABSTRACT:
An electro-optical scanner, particularly for position-, angle- and rotation-measuring instruments as well as for optical storages, comprising an illuminated or transilluminated code carrier (5), at least one optically scannable code track on the code carrier, an optical system (7) recording the code track, and an electro-optical sensor (8), with the optical system reproducing the code track on a light-sensitive surface of the sensor, should be easily manufactured, installed and adjusted, should comprise reduced dimensions, especially a smaller working distance and should allow a better position information. Thereto, the optical system comprises at least one rod-shaped lens (13) or a micro-lens plate.

REFERENCES:
patent: 3295214 (1967-01-01), Neergaard
patent: 4275965 (1981-06-01), Snitzer et al.
patent: 4617460 (1986-10-01), Tokunaga et al.
patent: 4641027 (1987-02-01), Renner et al.
patent: 4689485 (1987-08-01), McMurtry
patent: 4806016 (1989-02-01), Corpron et al.

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