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:
Aug. 30, 2016
Filed:
Sep. 27, 2012
Applicant:
Sharp Kabushiki Kaisha, Osaka, JP;
Inventors:
Takahiro Nakahashi, Osaka, JP;
Hiroyuki Hanato, Osaka, JP;
Assignee:
SHARP KABUSHIKI KAISHA, Osaka-shi, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01); B29C 43/58 (2006.01);
U.S. Cl.
CPC ...
B29D 11/00 (2013.01); B29C 43/58 (2013.01); B29C 2043/5808 (2013.01); B29C 2043/5833 (2013.01);
Abstract
When an optical element is produced by sandwiching a resin between a pair of molds, the resin is cured while a mold is kept in contact with the resin until the temperature of the resin reaches a gel point. Throughout the process, a load cell monitors pressure exerted to the mold. After detection of a state in which the pressure exerted to the mold is a negative pressure, the resin is cured while the position of the mold is controlled so that the pressure exerted to the mold is increased to a predetermined positive pressure and thereafter the positive pressure is maintained.