Test image projector for testing imaging devices

Details Test image projector for testing imaging devices Test image projector for testing imaging devices

1981-09-22

1984-04-17

Evans, F. L.

Optics: image projectors

Plural projection paths with single light source

353 99, G02B 510

Patent

active

044430582

ABSTRACT:
A test image projector operating in the ultraviolet through infrared specm that is comprised of two symmetrically mounted identical mirrors which are off-axis sections of an astronomical quality parabola. The first mirror produces collimated beams from object points and reflects these collimated beams onto the second mirror while the second mirror refocuses the collimated beams into diffraction limited image points, and thus provides a diffraction limited test image. The test image is used to check the quality of optical and electrooptical systems.

REFERENCES:
patent: 3244073 (1966-04-01), Bouwers et al.
patent: 3647284 (1972-03-01), Elings et al.

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