Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kuo-Chiang Chu0
Chien-Pang Chang0
Date of Patent
February 21, 2017
Patent Application Number
14027155
Date Filed
September 13, 2013
Patent Citations Received
...
Patent Primary Examiner
Patent abstract
An infrared filter includes a transparent substrate, and an infrared-filtering multilayer film. The infrared-filtering multilayer film is coated on the transparent substrate, and the infrared-filtering multilayer film includes a plurality of the first kind of film layers, a plurality of the second kind of film layers, a plurality of the third kind of film layers and a plurality of the fourth kind of film layers, wherein the four kinds of film layers are arranged in order of gradient refractive indexes. At least two kinds of film layers are made of composite materials.
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