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:
Dec. 16, 2008
Filed:
Jul. 01, 2005
Hiroshi Miyakoshi, Hachioji, JP;
Kazumi Furuta, Akishima, JP;
Masahiro Morikawa, Hachioji, JP;
Osamu Masuda, Machida, JP;
Makiko Imae, Hino, JP;
Hiroshi Miyakoshi, Hachioji, JP;
Kazumi Furuta, Akishima, JP;
Masahiro Morikawa, Hachioji, JP;
Osamu Masuda, Machida, JP;
Makiko Imae, Hino, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
A producing method of an optical element such as quarter-wave plate wherein preparing a first member which has a coefficient of elasticity of 1-4 (GPa) at normal temperature, setting the temperature of a die having microscopic shape with high aspect ratio to be higher than the glass transition temperature of the first member and pressing the die against the first member to transfer a microscopic shape on the first member, a microstructure is formed on the first member. In the same manner, a second microstructure is formed on a second member. Afterwards, by connecting the first member and the second member, an optical element in which the first member and the second member are connected having microstructures with high aspect ratio face each other, is obtained.