Optics: measuring and testing – Photometers – Comparison
Patent
1977-11-28
1979-03-20
Corbin, John K.
Optics: measuring and testing
Photometers
Comparison
250213VT, 250252, 324 20R, G01J 110, H01J 3912, G01D 1800, G01R 3124
Patent
active
041451422
ABSTRACT:
A beam from a test image is split into two paths. The beam in one path may pass through broad-band or narrow-band attenuators to the intensifier being tested. A portion of the beam in the other path passes through a hole in a reflector to the eye of a viewer. The intensifier provides an output beam, and this beam is reflected by the reflector to the eye of the view. The viewer thus sees an image that may have a lighter or darker portion, depending on whether the output beam from the intensifier is brighter or dimmer than the test image. Various attenuators may be inserted in the one optical path to provide tests of such things as intensifier gain, relative gain, or EBI on a go
o go basis.
REFERENCES:
patent: 2376166 (1945-05-01), Miller
N. B. Evershed, G. S. Richards, "A Field Test Set for Night Vision Device Optical Engineering, vol. 15, No. 3, pp. 251-254, May-Jun. 1976.
H. K. Pollehn, "Image Evaluation of Image Intensifiers" Conference: Image Assessment & Specification, Rochester, N.Y. USA pp. 271-276.
S. Weiser "Testing Image Quality in Electro-Optical Devices" Conference: Image Assessment & Specification, Rochester, N.Y. USA pp. 264-270.
Corbin John K.
Dunn Aubrey J.
Edelberg Nathan
Hille Rolf
Lee Milton W.
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