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:
Apr. 13, 1993
Filed:
May. 30, 1990
Kenji Uchino, Yokohama, JP;
Kazuyasu Hikita, Chichibu, JP;
Yoshiaki Tanaka, Chichibu, JP;
Mikiya Ono, Tokorozawa, JP;
Abstract
A photo-driven optical deflecting apparatus in which a light beam is deflected by using only light beam(s), comprising (a) a dielectric substrate having 'photovoltaic effect'; (b) one or more first couples of electrodes formed in or on at least a portion of the surface(s) of said substrate so as to polarize the portion(s) positioned between said couple(s) of the electrodes formed thereby; (c) one or more photo-driving or photo-receiving elements provided at least in the polarized portion(s) of the surface of said dielectric substrate, having a polarization direction oriented in one direction, and having photovoltaic effect so as to generate a voltage between said electrodes; (d) a dielectric and transparent prism having 'electrooptic effect' through which a light beam to be deflected is passed and deflected, provided on the surface of said substrate, having a second couple of electrodes provided on a couple of the surfaces of the prism, which surfaces are parallel to the optic axis; and a polarizer provided on the surface through which said beam enters; (d) leads electrically connecting said first electrodes to said second electrodes; the light beam to be deflected enters through said polarizer into said prism through which the light beam passes to be deflected; and said prism being operated directly by the photovoltage generated by said photo-driving element(s).