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:
Nov. 16, 2010
Filed:
Sep. 30, 2008
Shigeru Hosoe, Hachioji, JP;
Kiyoshi Yamashita, Hachioji, JP;
Nobuyoshi Mori, Hachioji, JP;
Yuichi Atarashi, Hachioji, JP;
Shigeru Hosoe, Hachioji, JP;
Kiyoshi Yamashita, Hachioji, JP;
Nobuyoshi Mori, Hachioji, JP;
Yuichi Atarashi, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
A method of producing a lens that includes shifting a first die relative to a second die, and pressing an optical material shaped in a preliminary form between the first die and the second die so as to form a lens having a configuration corresponding to a hollow portion formed by the first die and the second die while shifting the first die relative to the second die. The produced lens includes an effective optical surface configured to converge a light flux. The effective optical surface includes a light entrance side, a light exit side, and an optical axis. The effective optical surface is a convex surface shaped such that when a maximum normal line angle is defined as an angle formed between the optical axis and a normal line at the outermost circumference of the effective optical surface, the maximum normal angle is 60° to 90°.