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:
May. 29, 1990
Filed:
Nov. 27, 1987
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An optical deflecting apparatus comprises a first generator for generating a first surface acoustic wave which advances to intersect an optical path of a guided optical wave advancing inside of an optical waveguide and diffracts and deflects the guided optical wave, and a second generator for generating a second surface acoustic wave which advances to intersect the optical path of the guided and diffracted optical wave and diffracts and deflects the guided and diffracted optical wave in a direction that amplifies the deflection caused by the diffraction. The first and second surface acoustic wave generators are formed to continuously change the frequencies of the first and second surface acoustic waves and the directions of advance thereof while satisfying the conditions of k1+k1=k2 and k2+k2=k3 wherein k1 and k2 respectively denote wave vectors of the guided optical wave before and after being diffracted by the first surface acoustic wave, k3 denotes the wave vector of the guided optical wave after being diffracted by the second surface acoustic wave, and k1 and k2 respectively denote wave vectors of the first and second surface acoustic waves.