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:
May. 09, 2023
Filed:
Nov. 20, 2018
Applicant:
Toppan Printing Co., Ltd., Tokyo, JP;
Inventor:
Koichi Shinoda, Tokyo, JP;
Assignee:
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 3/08 (2006.01); B29C 59/02 (2006.01); B29C 59/04 (2006.01); G02B 3/06 (2006.01); G02B 3/00 (2006.01); B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
G02B 3/08 (2013.01); B29C 59/02 (2013.01); B29C 59/04 (2013.01); B29D 11/0048 (2013.01); B29D 11/00288 (2013.01); G02B 3/00 (2013.01); G02B 3/06 (2013.01);
Abstract
By providing a rib portionhaving a constant height in the range from 50% to 120% of the height of the highest point of a split lens structure between a plurality of split lenses, even when roll forming is performed at a high speed, trapping of air bubbles can be inhibited, and resin flow can be promoted; therefore, an optical elementhaving a surface on which a lens shape is formed and having a special optical effect can be obtained with few structural defects and high productivity.