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US 11,885,930 B2Granted
Optical lens assembly and photographing module
AssigneeNewmax Technology Co., Ltd.
InventorsChun-Sheng Lee, Chi-Chang Wang
Life of this patent
Estimating the term…
Abstract
An optical lens assembly includes, in order from the object side to the image side: a stop, a first lens, a second lens, a third lens, 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 an image-side surface of the third lens is R6, a focal length of the optical lens assembly is f, and following condition is satisfied: −6.83<HFOV/(R6/f)<44.10, which is favorable to the thinning and large field of view of the lens assembly.
Claims19
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.
5 more elements
A photographing module, comprising:
- a lens barrel,
- an optical lens assembly disposed in the lens barrel, and
- an image sensor disposed on an image plane of the optical lens assembly,
- wherein the 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 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.
10 more elements
Dependencies are inferred from the claim text.