Accession Number : ADD001549

Title :   Beam Doubler.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Lingenfelder,Paul G ; Fox,Jerry D

Report Date : 29 Oct 1974

Pagination or Media Count : 4

Abstract : The patent discloses an optical beam-splitter having two triangular prisms cemented together to form another prism roughly cubical in shape. Looking at the roughly square end formed by two triangular ends of the prisms, the latter are cemented together along their hypotenuse sides, one hypotenuse side having a 50% reflecting-50% transmitting coating. The rear and lower sides of the device have a cotaing which provides total internal reflectance. The lower side is inclined upwardly from the position in which it would form 90 degree angles with the front and rear sides, the lower side being longer and the front side shorter than the corresponding sides of the other prism. A light beam is admitted thru the front side of the device and a pair of divergent beams leave the upper side which is at an angle of 90 degrees to the front side.

Descriptors :   *Patents, *Light modulators, *Prisms(Optics), Optical coatings, Reflectors, Optical equipment

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE