60 degree field of view eyepiece

U.S. Patent Number: 5847880

Abstract: An optical eyepiece assembly for providing a sixty degree field of view cbility to an image intensifier. The assembly includes first and second air-spaced lens doublets, a first lens, filter element, and second lens.

Inventors: Spande; Robert A. (Alexandria, VA)

Assignee: The United States of America as represented by the Secretary of the Army (Washington, DC)

Application Number: 08/890,316

Issued: 1998-12-08

Expired: 2006-12-08

Classes: 359/643 ; 359/644

Field of search: 359/643,644,645,646,647

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