Apparatus for calibrating an optical instrument, and application

Details Apparatus for calibrating an optical instrument, and application Apparatus for calibrating an optical instrument, and application

1990-12-20

1993-04-20

Rosenberger, Richard A.

Optics: measuring and testing

Standard

2502521, G01M 1102, B64G 166

Patent

active

052047334

ABSTRACT:
To calibrate a radiometric optical instrument by means of a light source, the focal plane of the optical instrument containing photoelectric detectors which convert image brightness into an electrical signal, the light source is disposed in the entrance pupil or in the aperture diaphragm of the instrument. The invention is particularly suitable for calibrating an optical instrument on board a satellite.

REFERENCES:
patent: 3994601 (1976-11-01), Brugger
patent: 4167328 (1979-09-01), Cross et al.
patent: 4681444 (1987-07-01), Ferber et al.

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