Patent ID: 11885930
Assignee: NEWMAX TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An optical lens assembly, in order from an object side to an image side, comprising:
a stop;
a first lens with positive refractive power, comprising an object-side surface and an image-side surface, the object-side surface of the first lens being convex near an optical axis and the image-side surface of the first lens being convex near the optical axis, and the object-side surface and the image-side surface of the first lens being aspheric;
a second lens with refractive power, comprising an object-side surface and an image-side surface, the object-side surface of the second lens being concave near the optical axis and the image-side surface of the second lens being convex near the optical axis, and the object-side surface and the image-side surface of the second lens being aspheric;
a third lens with 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 the object-side surface and the image-side surface of the third lens being aspheric; and
an IR band-pass filter;
wherein half of a maximum view angle (field of view) of the optical lens assembly is HFOV, a radius of curvature of the image-side surface of the third lens is R6, a focal length of the optical lens assembly is f, a radius of curvature of the image-side surface of the first lens is R2, an entrance pupil diameter of the optical lens assembly is EPD, and following conditions are condition is satisfied: −6.83°<HFOV/(R6/f)≤11.97° and −10.42<R2/EPD<−2.00, or 27.92°≤HFOV/(R6/f)≤35.06°) and −10.42<R2/EPD<−2.00.