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:
Feb. 02, 2021
Filed:
Jan. 30, 2018
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Takahisa Nomura, Tokyo, JP;
Takanori Hamada, Tokyo, JP;
Masataka Nakashima, Tokyo, JP;
Kentaro Hata, Tokyo, JP;
Hiroshi Nakamura, Tokyo, JP;
Hiroki Nakagawa, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
Provided is an optical filmincluding a light-transmitting base materialand a light-transmitting functional layerprovided on one surface of the light-transmitting base material, wherein the optical filmhas a spectral transmittance of less than 1% at a wavelength of 380 nm, a spectral transmittance of 10% or more and less than 60% at a wavelength of 410 nm, and a spectral transmittance of 70% or more at a wavelength of 440 nm, and wherein the light-transmitting functional layerhas a film thickness of 9 μm or less.