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:
Aug. 22, 2023
Filed:
Sep. 29, 2020
Newmax Technology Co., Ltd., Taichung, TW;
Ching-Yun Huang, Taichung, TW;
Chi-Chang Wang, Taichung, TW;
NEWMAX TECHNOLOGY CO., LTD., Taichung, TW;
Abstract
A five-piece infrared single wavelength lens system includes, in order from the object side to the image side: a first lens element with a negative refractive power, a stop, a second lens element with a positive refractive power, a third lens element with a negative refractive power, a fourth lens element with a positive refractive power, and a fifth lens element with a negative refractive power, where a radius of curvature of an object-side surface of the third lens element is R5, a central thickness of the third lens element along an optical axis is CT3, and they satisfy the relation: 5<R5/CT3<35. Such a system has a wide field of view, large stop, short length and less distortion.