US 12,449,637 B2
Optical lens assembly
Ching-Yun Huang, Taichung (TW); and Sian-Chih Ke, Taichung (TW)
Assigned to NEWMAX TECHNOLOGY CO., LTD., Taichung (TW)
Filed by NEWMAX TECHNOLOGY CO., LTD., Taichung (TW)
Filed on Oct. 14, 2022, as Appl. No. 17/965,891.
Claims priority of application No. 111127867 (TW), filed on Jul. 26, 2022.
Prior Publication US 2024/0036292 A1, Feb. 1, 2024
Int. Cl. G02B 13/00 (2006.01); G02B 9/12 (2006.01)
CPC G02B 13/0035 (2013.01) [G02B 9/12 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An optical lens assembly, in order from an object side to an image side, comprising:
a first lens with a refractive power;
a stop;
a second lens with a positive refractive power, comprising an object-side surface and an image-side surface, the object-side surface of the second lens being convex near an optical axis, and the image-side surface of the second lens being convex near the optical axis;
a third lens with a positive refractive power, comprising an object-side surface and an image-side surface, the object-side surface of the third lens being convex near the optical axis; and
an infrared bandpass filter;
wherein a maximum field of view of the optical lens assembly is FOV, an f-number of the optical lens assembly is Fno, a radius of curvature of the object-side surface of the third lens is R5, a distance from an object-side surface of the first lens to an image plane along the optical axis is TL, an entrance pupil diameter of the optical lens assembly is EPD, a distance from the image-side surface of the first lens to the object-side surface of the second lens along the optical axis is T12, and the following conditions are satisfied: 19.82<FOV*Fno/(R5*TL)<50.37, and 6.58<EPD*TL/T12<24.94.