US 12,411,317 B2
Lens assembly
An-Kai Chang, Taichung (TW); and Wen-Chieh Chen, Taichung (TW)
Assigned to SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen (CN); and ASIA OPTICAL CO., INC., Taichung (TW)
Filed by Sintai Optical (Shenzhen) Co., Ltd., ShenZhen (CN); and Asia Optical Co., Inc., Taichung (TW)
Filed on Feb. 7, 2022, as Appl. No. 17/665,659.
Claims priority of application No. 202110218069.1 (CN), filed on Feb. 26, 2021; and application No. 202110472094.2 (CN), filed on Apr. 29, 2021.
Prior Publication US 2022/0276469 A1, Sep. 1, 2022
Int. Cl. G02B 13/00 (2006.01); G02B 9/60 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/60 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A lens assembly comprising:
a first lens which is a meniscus lens with negative refractive power;
a second lens which is with positive refractive power and comprises a convex surface facing an image side;
a third lens which is a meniscus lens with positive refractive power;
a fourth lens which is with positive refractive power; and
a fifth lens which is with refractive power and comprises a convex surface facing an object side;
wherein the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are arranged in order from the object side to the image side along an optical axis;
wherein the lens assembly satisfies:
0.1<ΦST/TTL<0.5;
wherein ΦST is an aperture diameter of a stop and TTL is an interval from an object side surface of the first lens to an image plane along the optical axis.