Wide field of view coherent light detector and locator

Details Wide field of view coherent light detector and locator Wide field of view coherent light detector and locator

1997-07-23

1998-11-17

Font, Frank G.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356345, G01B 902

Patent

active

058384413

ABSTRACT:
The present invention is a wide field of view electro-optic detector and locator of coherent light of unknown wavelength that includes a collecting optic that collimates incoming optical radiation, a common-path electro-optic polarization interferometer placed at an exit pupil plane, an imaging optic, a detector array placed one focal length away from said imaging optic, an image processor that processes the incoming signal in a manner that is independent of the phase of the modulation signal, and an output device. The preferred collecting optic includes a first lens, a field lens, and a collimating lens. The preferred interferometer includes a first polarizer, a liquid crystal variable phase modulator, a fixed phase retarder, and a second polarizer.

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