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, 2020
Filed:
Aug. 10, 2017
Rays Optics Inc., Hsinchu County, TW;
Kuo-Chuan Wang, Hsinchu County, TW;
Sheng-Tang Lai, Hsinchu County, TW;
Hsin-Te Chen, Hsinchu County, TW;
Chen-Cheng Lee, Hsinchu County, TW;
Rays Optics Inc., Hukou Township, Hsinchu County, TW;
Abstract
An optical lens includes two lens groups and an aperture stop. A total number of lenses with refractive power of the two lens groups is larger than three, and the two lens groups includes an aspheric lens with negative refractive power. The aperture stop is disposed between the two lens groups. The optical lens satisfies the following condition: 0.05>[y(θ)−(EFL*sin θ)]/(EFL*sin θ)>−0.3, where θ denotes a half field of view, y(θ) denotes an image height of an image plane for visible light with respect to the half field of view θ, and EFL denotes an effective focal length for visible light of the optical lens.