US 11,698,512 B2
Wide-angle lens assembly
Jian-Wei Lee, Taichung (TW); and Shu-Hung Lin, Taichung (TW)
Assigned to SINTAI OPTICAL (SHENZHEN) CO., LTD., Shenzhen (TW); 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 Nov. 10, 2020, as Appl. No. 17/93,912.
Claims priority of application No. 201911262385.8 (CN), filed on Dec. 11, 2019.
Prior Publication US 2021/0181466 A1, Jun. 17, 2021
Int. Cl. G02B 9/64 (2006.01); G02B 13/06 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/64 (2013.01) [G02B 13/006 (2013.01); G02B 13/06 (2013.01); G02B 13/0045 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A wide-angle lens assembly comprising:
a first lens which is a meniscus lens with negative refractive power;
a second lens which is a meniscus lens with negative refractive power;
a third lens which is with negative refractive power;
a fourth lens which is with refractive power and comprises a concave surface facing an object side;
a fifth lens which is with positive refractive power;
a sixth lens which is with positive refractive power;
a seventh lens which is with refractive power and comprises a concave surface facing the object side;
an eighth lens which is with positive refractive power;
a ninth lens which is with negative refractive power; and
a tenth lens which is with refractive power and comprises a concave surface facing an image side;
wherein the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, the ninth lens, and the tenth lens are arranged in order from the object side to the image side along an optical axis;
wherein the wide-angle lens assembly satisfies:
6<f5/f<8.5;
wherein f5 is an effective focal length in mm of the fifth lens and f is an effective focal length in mm of the wide-angle lens assembly.