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:
Oct. 18, 1977
Filed:
Sep. 10, 1975
Peter Baues, Krailling, DT;
Siemens Aktiengesellschaft, Berlin & Munich, DT;
Abstract
A device for modulating light characterized by an electro-optical crystal which is either a solid crystal or a liquid crystal having an index of refraction greater than the index of refraction of the substrate on which the crystal is disposed and having a surface opposite the substrate covered with a dielectric material having an index of refraction less than the index of refraction of the crystal. A plurality of strip electrodes are disposed on the layer with adjacent electrodes connected to different terminals to form an interdigital electrode structure. When a modulating voltage is applied to the interdigital electrode structure, electrical fields are created between the electrode strips extending parallel to the direction of light propagation in the crystal to change the index of refraction to cause modulation of the light.