The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 17, 1998
Filed:
Sep. 29, 1995
Takahiro Miyake, Kyoto, JP;
Kazuhiko Ueda, Nara-ken, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A light splitting and synthesizing device includes: a polarized beam splitter for splitting a white light into two polarized light beams and for directing the polarized light beams toward different directions; at least one half wave plate for rotating the polarization direction of one of the polarized light beams by 90 degrees so that the polarized light beams have the same polarization; and a synthesizing prism for synthesizing the polarized light beams into one beam. The synthesizing prism includes a substrate having a pair of parallel surfaces, on one of the surfaces an array of prisms with a vertical angle of 60 degrees being formed, the polarized light beams being incident on the array of prisms and being outgoing from the other surface. The half wave plate is disposed such a position that only one of the polarized light beams is incident thereon. Each of the polarized light beams incident on the synthesizing prism enters one face of a respective prism of the prism array and is totally reflected by an opposite face of the respective prism so as to be directed toward the outgoing surface of the synthesizing prism.