Optical: systems and elements – Optical modulator – Having particular chemical composition or structure
Patent
1990-05-30
1993-04-13
Hille, Rolf
Optical: systems and elements
Optical modulator
Having particular chemical composition or structure
359245, 359254, 359322, G02F 101
Patent
active
052027902
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).
REFERENCES:
patent: 2836652 (1958-05-01), Sprague
patent: 4152597 (1979-05-01), Sher
patent: 4313651 (1982-02-01), Miller, Jr.
"Trial Construction of Whole Light Driven Electro-optical Device" Japan Physic Society 1987 p. 80.
Tanimura et al. "Effect of Impurity Doping on Photostriction in Ferroelectric Ceramics" Sensors and Materials 1. (1988) pp. 46-56.
Utsunomiya et al. "Prism-Type Optical Deflector Using PLZT Ceramics" Japanese Journal of Applied Physics vol. 24 (1985) pp. 169-171.
Hikita Kazuyasu
Ono Mikiya
Tanaka Yoshiaki
Uchino Kenji
Hille Rolf
Mitsubishi Mining and Cement Company Ltd.
Potter Roy
LandOfFree
Photo-driven light beam deflecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photo-driven light beam deflecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photo-driven light beam deflecting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1159432