US 11,947,186 B2
Optical imaging lens assembly and fingerprint identification device
Li Xie, Zhejiang (CN); Fujian Dai, Zhejiang (CN); and Liefeng Zhao, Zhejiang (CN)
Assigned to ZHEJIANG SUNNY OPTICS CO., LTD., Ningbo (CN)
Filed by ZHEJIANG SUNNY OPTICS CO., LTD., Zhejiang (CN)
Filed on Jan. 19, 2022, as Appl. No. 17/578,503.
Claims priority of application No. 202110125652.8 (CN), filed on Jan. 29, 2021.
Prior Publication US 2022/0244491 A1, Aug. 4, 2022
Int. Cl. G02B 9/12 (2006.01); G02B 3/04 (2006.01); G06F 21/32 (2013.01); G02B 5/08 (2006.01)
CPC G02B 9/12 (2013.01) [G02B 3/04 (2013.01); G02B 5/0808 (2013.01); G06F 21/32 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly, sequentially comprising, from an object side to an image side along an optical axis:
a first lens with a negative refractive power, an object-side surface thereof being a concave surface;
a second lens with a positive refractive power, an object-side surface thereof being a convex surface; and
a third lens with a positive refractive power, an object-side surface thereof being a convex surface while an image-side surface being a convex surface, the optical imaging lens assembly further comprises a diaphragm, the diaphragm is arranged between the second lens and the third lens,
wherein EPD is an entrance pupil diameter of the optical imaging lens assembly, and a total effective focal length f of the optical imaging lens assembly and EPD meet f/EPD<1.65; and
FOV is a maximum field of view of the optical imaging lens assembly, and FOV meets 125°<FOV<140°;
SL is a distance from the diaphragm to an imaging surface of the optical imaging lens assembly on the optical axis, TTL is a distance from the object-side surface of the first lens to the imaging surface of the optical imaging lens assembly on the optical axis, SL and TLL meet 2.0<TTL/SL<2.5;
TTL is a distance from the object-side surface of the first lens to an imaging surface of the optical imaging lens assembly on the optical axis, BFL is a distance from the image-side surface of the third lens to the imaging surface of the optical imaging lens assembly on the optical axis, TTL and BFL meet 2.7<TTL/BFL<3.4.