US 12,105,355 B2
Wide-angle lens assembly
Chia-Hung Sun, Taichung (TW); Tsan-Haw Lee, Taichung (TW); Yu-Wen Tai, Taichung (TW); and Shu-Hung Lin, 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 Dec. 8, 2020, as Appl. No. 17/114,778.
Claims priority of application No. 201911250161.5 (CN), filed on Dec. 9, 2019; application No. 201911273285.5 (CN), filed on Dec. 12, 2019; and application No. 202010054946.1 (CN), filed on Jan. 17, 2020.
Prior Publication US 2021/0173180 A1, Jun. 10, 2021
Int. Cl. G02B 9/64 (2006.01); G02B 13/18 (2006.01)
CPC G02B 9/64 (2013.01) [G02B 13/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wide-angle lens assembly comprising:
a seventh lens which is with refractive power and comprises a convex surface facing an object side;
a first lens which is a meniscus lens with refractive power and comprises a convex surface facing the object side and a concave surface facing an image side;
a sixth lens which is with refractive power;
a second lens which is with positive refractive power;
a stop;
a third lens which is with positive refractive power and comprises a convex surface facing the object side;
an eighth lens which is with positive refractive power;
a fourth lens which is with refractive power and comprises a concave surface facing the object side; and
a fifth lens which is a biconvex lens with positive refractive power and comprises a convex surface facing the object side and another convex surface facing the image side;
wherein the sixth lens and the seventh lens have opposite refractive power;
wherein the seventh lens, the first lens, the sixth lens, the second lens, the third lens, the eighth lens, the fourth lens, and the fifth lens are arranged from the object side to the image side along an optical axis;
wherein the stop is disposed between the second lens and the eighth lens;
wherein the relative positions of the lenses are fixed;
wherein the wide-angle lens assembly satisfies the following condition:
5.5<TTL/f<10;
wherein TTL is an interval from an object side surface of the lens closest to the object side to an image plane along the optical axis and f is an effective focal length of the wide-angle lens assembly.