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. 15, 2024
Filed:
Sep. 27, 2021
Sintai Optical (Shenzhen) Co., Ltd., ShenZhen, CN;
Asia Optical Co., Inc., Taichung, TW;
Po-Yuan Shih, Taichung, TW;
An-Kai Chang, Taichung, TW;
Sintai Optical (Shenzhen) Co., Ltd., ShenZhen, CN;
Asia Optical Co., Inc., Taichung, TW;
Abstract
A lens assembly includes a first, a second, a third, a fourth, a fifth, a sixth, and a seventh lenses. The first lens has negative refractive power. The second, third, fifth, and sixth lenses have refractive power. The fourth lens has positive refractive power and includes a convex surface facing an image side. The sixth includes a concave surface facing an object side. The seventh lens has positive refractive power. The lens assembly satisfies at least one of the following conditions: −4<f/f<7; 0.7<f/f<1.1; −3<f/f<2; wherein f, f, f, and fare respectively effective focal lengths of the second, third, sixth, and seventh lenses, fis an effective focal length of a combination of the first, second, and third lenses, and fis an effective focal length of a combination of the fourth, fifth, sixth, and seventh lenses.