US 10,890,738 B2
Optical imaging lens assembly, image capturing unit and electronic device
Kuan-Ting Yeh, Taichung (TW); Kuo-Jui Wang, Taichung (TW); Chien-Hsun Wu, Taichung (TW); Wei-Yu Chen, Taichung (TW); and Po-Lun Hsu, Taichung (TW)
Assigned to LARGAN PRECISION CO., LTD., Taichung (TW)
Filed by LARGAN PRECISION CO., LTD., Taichung (TW)
Filed on Oct. 3, 2018, as Appl. No. 16/151,169.
Claims priority of application No. 107116204 A (TW), filed on May 11, 2018.
Prior Publication US 2019/0346661 A1, Nov. 14, 2019
Int. Cl. G02B 13/00 (2006.01); G02B 13/18 (2006.01); G02B 13/02 (2006.01); G02B 9/60 (2006.01)
CPC G02B 13/0045 (2013.01) [G02B 9/60 (2013.01); G02B 13/02 (2013.01); G02B 13/18 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An optical imaging lens assembly comprising five lens elements, the five lens elements being, in order from an object side to an image side:
a first lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof;
a second lens element;
a third lens element having negative refractive power;
a fourth lens element; and
a fifth lens element having negative refractive power;
wherein an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, an Abbe number of the fourth lens element is V4, a focal length of the second lens element is f2, a focal length of the third lens element is f3, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, an axial distance between the object-side surface of the first lens element and an image-side surface of the fifth lens element is TD, an axial distance between the image-side surface of the fifth lens element and an image surface is BL, an axial distance between the object-side surface of the first lens element and the image surface is TL, a focal length of the optical imaging lens assembly is f, an f-number of the optical imaging lens assembly is Fno, and the following conditions are satisfied:
35<V2+V3+V4<85;
|f3/f2|<2.33;
T23/T34<2.0; and
1.25<TD/BL<4.80;
0.5<TL/f<1.0; and
1.0<Fno<2.70.