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. 21, 2021
Filed:
Nov. 29, 2017
Riken Technos Corporation, Tokyo, JP;
Taketo Hashimoto, Tokyo, JP;
Abstract
Embodiments relate to a layered film having an antireflection function and an infrared-shielding function. According to at least one embodiment, there is provided a layered film having a heat-ray shielding layer and a low-refractive-index layer in this order on at least one surface of a resin film, where the difference (Rh−Rf) of the refractive index (Rh) of the heat-ray shielding layer and the refractive index (Rf) of the resin film is −0.1 to 0.1, the difference (Rh−RL) of the refractive index (Rh) of the heat-ray shielding layer and the refractive index (RL) of the low-refractive-index layer is 0.05 or greater, and the refractive index (RL) of the low-refractive-index layer is 1.2 to 1.45. The thickness of the heat-ray shielding layer may be 0.1 to 5 μm. The visible-light transmittance of the layered film may be 88% or greater.