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:
Aug. 23, 1988
Filed:
Jul. 06, 1987
Takeo Matsudaira, Tokyo, JP;
Teiji Inoue, Tokyo, JP;
Hoya Corporation, Tokyo, JP;
Abstract
In a beam splitter for splitting a single input light beam into a plurality of outgoing light beams, a transparent block has first and second planar surfaces substantially parallel to each other. Antireflection and reflection layers are laid on incident and reflection areas defined on the first planar surface while a plurality of partial semitransparent layers are attached to an outgoing area defined on the second planar surface. The incident light beam enters through the antireflection layer into the block and exits as the outgoing light beams through the partial semitransparent layers. At least one of the partial semitransparent layers has a width wide enough to at least two of the outgoing light beams. The partial semitransparent layers may be deposited on the first planar surface in the vicinity of the antireflection layer. In this event, the reflection layer is deposited on the second planar surface.