Title: Photodichroic readout device using circularly polarized light

Abstract: A unique photodichroic readout device composed of photodichroic material u which is passed a circularly polarized light beam that is horizontally or vertically polarized dependent upon the storage of information in the material. The beam is then passed to a beam splitter which segregates the horizontal polarized light and the vertical polarized light. The two individual beams pass to individual detectors whose output is coupled to a difference amplifier. The system also provides a method for selectively storing information within the photodichroic material.

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Inventors: Burt, James Vinton (Wilmington, DE, US)

Application Number: 486126
Filing Date: 1974-07-05
Publication_date: 1976-01-20
Assignee: The United States of America as represented by the Secretary of the Navy (Washington, DC)
Primary Class(es): 365/119 365/121, 365/207
Other Classes:
US Patent Ref:

3396266	Aug, 1968	Max	340/173.
3580688	May, 1971	Schneider	340/173.
3693172	Sep, 1972	Feldtkeller	340/173.

Other Refs:
Primary Examiner: Fears, Terrell W.
Assistant Examiner:
Attorney: Sciascia; R. S., O'Neill; R. E.