US 12,001,079 B2
Optical camera lens
Ming-Huang Tseng, Taichung (TW); Guo-Yang Wu, Taichung (TW); and Hsi-Ling Chang, 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., Guandong (CN); and ASIA OPTICAL CO., INC., Taichung (TW)
Filed on Feb. 26, 2021, as Appl. No. 17/186,124.
Claims priority of application No. 109107271 (TW), filed on Mar. 5, 2020; and application No. 202010392964.0 (CN), filed on May 11, 2020.
Prior Publication US 2021/0278633 A1, Sep. 9, 2021
Int. Cl. G02B 9/14 (2006.01); G02B 9/34 (2006.01); G02B 13/00 (2006.01)
CPC G02B 9/14 (2013.01) [G02B 9/34 (2013.01); G02B 13/0035 (2013.01); G02B 13/004 (2013.01); G02B 13/0065 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An optical camera lens, comprising:
a first lens is a meniscus lens with positive refractive power and comprising a first object side surface and a first image side surface, wherein the first object side surface is opposite to the first image side surface;
a second lens is with negative refractive power and comprising a second object side surface and a second image side surface, wherein the second object side surface is opposite to the second image side surface, the second object side surface is convex, and the second image side surface is concave; and
a third lens is with positive refractive power and comprising a third object side surface and a third image side surface, wherein the third object side surface is opposite to the third image side surface, the third object side surface is convex, and the third image side surface is convex;
wherein the first lens, the second lens, and the third lens are arranged from an object side to an image side in sequence, and the optical camera lens satisfies the following condition:
2.5<R21/R22<3,
wherein R21 is the radius of curvature of the second object side surface and R22 is the radius of curvature of the second image side surface;
6<BFL/T1<11,
wherein BFL is the back focal length of the optical camera lens and T1 is the thickness of the first lens; and
3.5<BFL/AAG<5.5,
wherein AAG is the sum of the air gap between the first lens and the second lens and the air gap between the second lens and the third lens.