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US Patent 7433378 Optical element and method for manufacturing the same

Patent 7433378 was granted and assigned to Seiko Epson on October, 2008 by the United States Patent and Trademark Office.

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Patent
Patent
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Patent attributes

Current Assignee
Seiko Epson
Seiko Epson
1
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
1
Patent Number
74333781
Patent Inventor Names
Michifumi Nagawa1
Date of Patent
October 7, 2008
1
Patent Application Number
115370921
Date Filed
September 29, 2006
1
Patent Primary Examiner
‌
Armando Rodriguez
1
Patent abstract

An optical element includes: a substrate; a surface-emitting type semiconductor laser that is provided on the substrate and emits laser light in a direction orthogonal to a surface of the substrate; a rectification element that is provided on the substrate and connected in parallel with the surface-emitting type semiconductor laser, the rectification element having a rectification action with respect to a reverse bias voltage applied to the surface-emitting type semiconductor laser; a first insulation layer that covers a side surface and a portion of an upper surface of a first columnar section including at least a portion of the surface-emitting type semiconductor laser; and a second insulation layer that covers a side surface and an upper surface of a second columnar section along an entire circumference thereof, the second columnar section including at least a portion of the rectification element.

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