Imaging lens assembly, imaging apparatus and electronic device
AssigneeLargan Precision Co., Ltd.
InventorsChien-Hsun WU, Shu-Yun YANG
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Abstract
An imaging lens assembly includes six lens elements, the six lens elements being, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element. The first lens element has negative refractive power. The second lens element has positive refractive power. The fifth lens element has positive refractive power.
Claims31
An imaging lens assembly comprising six lens elements, the six lens elements being, in order from an object side to an image side:
- a first lens element having negative refractive power;
- a second lens element having positive refractive power;
- a third lens element having negative refractive power;
- a fourth lens element;
- a fifth lens element having positive refractive power;
- and
- a sixth lens element;
- wherein a focal length of the fifth lens element is f5, a central thickness of the second lens element is CT2, a curvature radius of an image-side surface of the second lens element is R4, a curvature radius of an object-side surface of the third lens element is R5, and the following conditions are satisfied:
- 0.10<f5/CT2<1.20;
- and
- (R4+R5)/(R4−R5)<0.75.
An imaging lens assembly comprising six lens elements, the six lens elements being, in order from an object side to an image side:
- a first lens element having negative refractive power;
- a second lens element having positive refractive power;
- a third lens element;
- a fourth lens element;
- a fifth lens element having positive refractive power;
- and
- a sixth lens element having an image-side surface being convex in a paraxial region thereof;
- wherein a focal length of the fifth lens element is f5, a central thickness of the second lens element is CT2, a curvature radius of an object-side surface of the third lens element is R5, a curvature radius of an image-side surface of the third lens element is R6, a curvature radius of an object-side surface of the fourth lens element is R7, a curvature radius of an image-side surface of the fourth lens element is R8, and the following conditions are satisfied:
- 0.10<f5/CT2<1.40;
- 0.45<(R5+R6)/(R5−R6);
- and
- (R7+R8)/(R7−R8)<1.50.
An imaging lens assembly comprising six lens elements, the six lens elements being, in order from an object side to an image side:
- a first lens element having negative refractive power;
- a second lens element having positive refractive power;
- a third lens element having negative refractive power;
- a fourth lens element;
- a fifth lens element having positive refractive power;
- and
- a sixth lens element;
- wherein a curvature radius of an object-side surface of the third lens element is R5, a curvature radius of an image-side surface of the third lens element is R6, a focal length of the fifth lens element is f5, a central thickness of the second lens element is CT2, an axial distance between the first lens element and the second lens element is T12, and the following conditions are satisfied:
- −3.50<(R5+R6)/(R5−R6);
- and
- 0.50<f5/CT21−f5/T2<2.50.
Dependencies are inferred from the claim text.