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:
Apr. 30, 2024
Filed:
May. 26, 2022
Ptot (Suzhou) Inc., Suzhou, CN;
Platinum Optics Technology Inc., Taoyuan, TW;
Chung-Han Lu, Taoyuan, TW;
Hsiao-Ching Shen, Taoyuan, TW;
Chun-Cheng Hsieh, Taoyuan, TW;
Ming-Zhan Wang, Taoyuan, TW;
PTOT (SUZHOU) INC., Suzhou, CN;
PLATINUM OPTICS TECHNOLOGY INC., Taoyuan, TW;
Abstract
An absorption type near-infrared filter comprising a first multilayer film, a second multilayer film, and an absorption film, wherein in the ultraviolet band, the difference of between the wavelength with the transmittance at 80% of the absorbing film and the wavelength with the reflectivity at 80% of the first multilayer film falls in the range between 25 nm and 37 nm, the difference of between the wavelength with the transmittance at 50% of the absorbing film and the wavelength with the reflectivity at 50% of the first multilayer film falls in the range between 6 nm and 14 nm, and the difference of between the wavelength with the transmittance at 20% of the absorbing film and the wavelength with the reflectivity at 20% of the first multilayer film falls in the range between −6 nm and 2.5 nm.