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:
Jun. 27, 1989
Filed:
Feb. 02, 1988
Satoru Amano, Yamanashi, JP;
Hoya Corporation, Tokyo, JP;
Abstract
In an acoustooptic modulation device, a plurality of split light beams are produced from a beam splitter in response to a single incident light beam and projected onto partial modulators comprising acoustooptic mediums and transducers attached to the mediums, respectively. The transducers have different thicknesses to vary input impedances of the respective partial modulators and are supplied from an electric signal circuit with modulated electric signals falling within frequency bands different from one another, respectively. Preferably, modulated light beams are produced from the partial modulators through an optical system to be focussed into a predetermined geometric arrangement. The beam splitter may be a body having a pair of parallel surfaces covered with reflection and semitransparent layers, a diffraction grating, or a fiber grating.