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:
Oct. 15, 2019
Filed:
Jul. 25, 2016
Konica Minolta, Inc., Tokyo, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
Provided is a silver reflector capable of maintaining a high reflectivity achieved by using silver even under a hot and humid environment, wherein a film stress can be suppressed and a face deformation of an optical surface can be reduced, and a manufacture method therefor. A film stress after a reflection film is formed is within a range of +100 MPa to −100 MPa, and a film stress after the reflection film is subjected to a hot and dry environment at 110° C. for 24 hours and a film stress after the reflection film subjected to the environment is subjected to a hot and humid environment at 85° C. and 85% RH for 24 hours are within a range of +100 MPa to −100 MPa, and also an absolute value of a change amount between the former and latter film stress values is 40 MPa or lower.