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:
Jun. 24, 2025
Filed:
Mar. 25, 2022
Sekonix Co., Ltd., Gyeonggi-do, KR;
SEKONIX CO., LTD., Gyeonggi-do, KR;
Abstract
A small lens system for developing a close tolerance is proposed. The small lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens that are arranged in order along an optical axis from an object. Refractive power P1 of the first lens satisfies −0.01 mm<P1<0.01 mm, the second lens is shaped with opposite convex surfaces, and refractive power P2 of the second lens satisfies P2>0.4 mm, the third lens has negative refractive power, and a rear surface curvature C6 of the third lens satisfies −0.01 mm<C6<0.01 mm, refractive power P4 of the fourth lens satisfies −0.1 mm<P4<0.1 mm, refractive power P5 of the fifth lens satisfies P5>0.7 mm, and refractive power P6 of the sixth lens satisfies P6<−0.7 mm.