Photographing lens assembly, image capturing unit and electronic device
AssigneeLargan Precision Co., Ltd.
InventorShu-Yun YANG
Life of this patent
Estimating the term…
Abstract
A photographing lens assembly includes, in order from an object side to an image side: a plurality of lens elements and an aspheric image surface. Each of the lens elements of the photographing lens assembly has an object-side surface facing toward the object side and an image-side surface facing toward the image side, and each of the lens elements is a single and non-cemented lens element.
Claims30
A photographing lens assembly comprising, in order from an object side to an image side:
- a plurality of lens elements, each of the plurality of lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side, and each of the plurality of lens elements being a single and non-cemented lens element;
- and
- an image surface;
- wherein a sum of axial distances between every adjacent lens elements of the photographing lens assembly is ΣAT, a sum of central thicknesses of the plurality of lens elements of the photographing lens assembly is ΣCT, a displacement in parallel with an optical axis between a profile point on the image surface and an axial vertex of the image surface is X, a vertical distance between the profile point on the image surface and the optical axis is Y, a conic coefficient of the image surface is k, a curvature radius of the image surface at the profile point is R, an i-th aspheric coefficient of the image surface is Ai, and the following conditions are satisfied:
- 0.10<ΣAT/ΣCT<3.50;
- X=(Y2/R)/{1+sqrt[1−(1+k)×(Y/R)2]}+Σ(Ai)×(Yi);
- and
- 0<|k|+Σ|Ai|.
An image capturing unit comprising, in order from an object side to an image side:
- a photographing lens assembly comprising, in order from the object side to the image side, a plurality of lens elements and an aspheric image surface, and each of the plurality of lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side;
- and
- an aspheric image sensor disposed on the aspheric image surface, and a curvature of a surface of the aspheric image sensor varying in an effective photosensitive area thereof;
- wherein a maximum value among all central thicknesses of the plurality of lens elements of the photographing lens assembly is CTmax, a minimum value among all central thicknesses of the plurality of lens elements of the photographing lens assembly is CTmin, and the following conditions are satisfied:
- CTmax<2.0 [mm];
- and
- CTmin<0.50 [mm].
An image capturing unit comprising, in order from an object side to an image side:
- a photographing lens assembly comprising, in order from the object side to the image side, a plurality of lens elements and an aspheric image surface, each of the plurality of lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side, and two of the plurality of lens elements closest to the object side, in order from the object side to the image side, respectively having refractive power and negative refractive power;
- and
- an aspheric image sensor disposed on the aspheric image surface, and a curvature of a surface of the aspheric image sensor varying in an effective photosensitive area thereof;
- wherein the plurality of lens elements comprises an object-side lens element closest to the object side, an axial distance between the object-side surface of the object-side lens element and the aspheric image surface is TL, and the following condition is satisfied:
- TL<20 [mm].
Dependencies are inferred from the claim text.