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. 20, 2015
Filed:
Dec. 19, 2012
Applicants:
Ga-lane Chen, Santa Clara, CA (US);
Chung-pei Wang, New Taipei, TW;
Chao-tsang Wei, New Taipei, TW;
Inventors:
Assignee:
HON HAI PRECSION INDUSTRY CO., LTD., New Taipei, TW;
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/08 (2006.01); G02B 5/28 (2006.01); G02B 13/14 (2006.01); G02B 1/11 (2015.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
G02B 13/143 (2013.01); G02B 1/11 (2013.01); G02B 5/282 (2013.01); G02B 5/208 (2013.01);
Abstract
An IR-cut filter includes a substrate and an infrared filtering film. The substrate is made of sapphire, and includes a first surface and a second surface opposite to the first surface. The infrared filtering film covers the first surface of the substrate and increases the reflectivity in relation to infrared light, thus filtering out the infrared light. The infrared filtering film includes a number of first high refraction index layers and a number of first low refraction index layers alternately stacked on the first surface of the substrate.