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:
Jul. 21, 2009
Filed:
May. 16, 2005
Hiroshi Nagaeda, Hokkaido, JP;
Noriyasu Shiga, Hokkaido, JP;
Hiroshi Nagaeda, Hokkaido, JP;
Noriyasu Shiga, Hokkaido, JP;
Trimatiz Limited, Chiba, JP;
Abstract
An optical device using an electro-optical element is of great utility value to industry, owing to its fast responsiveness and the like. Prior art has problems such as high cost due to a large number of parts, large device size, and high drive voltage, and it has been a challenge to reduce the number of parts to be used, to downsize the device, and to reduce drive voltage. An optical device of the invention has a reflection structure comprising an input fiberand an output fiberwhich are fastened by a duplex ferrule, a collimating lens, and a reflector elementfor reflecting light. The optical device further comprises a cylindrical lens functioning as a condenser lens, and an electro-optical element, which is placed near a collection point of the condenser lens. Electrodes of the electro-optical elementare configured such that the interelectrode distance becomes smaller the closer they are to the collection part.