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. 19, 2023
Filed:
Dec. 18, 2020
Applicant:
Konica Minolta, Inc., Tokyo, JP;
Inventors:
Yoshihiro Nakano, Tondabayashi, JP;
Koji Takahara, Hirakata, JP;
Assignee:
Konica Minolta, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01F 5/28 (2006.01); C01G 23/00 (2006.01); C01G 23/047 (2006.01); C01G 25/00 (2006.01); C01G 33/00 (2006.01); C01G 35/00 (2006.01); C03C 17/34 (2006.01); G02B 15/167 (2006.01); G02B 1/115 (2015.01);
U.S. Cl.
CPC ...
G02B 1/115 (2013.01); C01F 5/28 (2013.01); C01G 23/003 (2013.01); C01G 23/047 (2013.01); C01G 25/006 (2013.01); C01G 33/00 (2013.01); C01G 35/00 (2013.01); C03C 17/3452 (2013.01); G02B 15/167 (2013.01); C03C 2217/213 (2013.01); C03C 2217/218 (2013.01); C03C 2217/285 (2013.01); C03C 2217/734 (2013.01); C03C 2218/152 (2013.01);
Abstract
An optical lens with an antireflective film includes: a lens substrate; and an antireflective film disposed on the lens substrate. The antireflective film is formed of layers each having a physical thickness of 140 nm or less. In order from an air side, the antireflective film has: a first layer formed as an MgFlayer, a second layer, a fourth layer, a sixth layer, an eighth layer, and a tenth layer each having a refractive index of 2.0 or more and 2.3 or less, and a third layer, a fifth layer, a seventh layer, and a ninth layer each formed as an SiOlayer.