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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.:

US 6899936 B1

PDFFull Text
Date of Patent:
May. 31, 2005

Filed:

Aug. 30, 2002

Stamper, manufacturing method therefor and optical device manufactured therewith

Applicants:

Hirotoshi Takemori, Nara, JP;

Kazunori Matsubara, Shiki-gun, JP;

Inventors:

Hirotoshi Takemori, Nara, JP;

Kazunori Matsubara, Shiki-gun, JP;

Assignee:

Sharp Kabushiki Kaisha, Osaka, JP;

Attorneys:

David G. Conlin

Steven M. Jensen

Edwards & Angell, LLP

Primary Examiner:

Elizabeth Mulvaney

Int. Cl.
CPC ...
B32B003/02 ;
U.S. Cl.
CPC ...
Abstract

A fine pattern of an optical device formed by the Photo-Polymer method has a groovea side wallof which is sloped against a surface of stamperThe slope angle θ of the side wallsatisfies the following relational expression: Tan(4×h×w)<θ<80° where h: a depth of the grooveand w: a width of a top of a projected portion formed by the side walls. Burrs formed in the optical device are reduced, and thereby mass productivity of the optical device is improved.

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Takemori, Hirotoshi. (2005). Stamper, manufacturing method therefor and optical device manufactured therewith (U.S. Patent No. 6899936). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6899936

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