Camera optical lens
AssigneeAAC Optics Solutions Pte. Ltd.
InventorJiekang Chen
Life of this patent
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Abstract
The present invention relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens having a negative refractive power. The camera optical lens satisfies following conditions: −3.50≤f2/f≤−1.50; 3.00≤(R3+R4)/(R3−R4)≤8.00; 8.00≤d1/d2≤15.00; 0.50≤f3/f≤0.75; −5.00≤R2/R1≤−2.50; −0.70≤f4/f≤−0.40. The camera optical lens can achieve excellent optical characteristics with a large aperture, wide-angle, and being ultra-thin.
Claims10
A camera optical lens comprising, from an object side to an image side:
- a first lens having a positive refractive power;
- a second lens having a negative refractive power;
- a third lens having a positive refractive power;
- and
- a fourth lens having a negative refractive power;
- wherein the camera optical lens satisfies following conditions:
- −3.50≤f2/f≤31 1.50;
- 3.00≤(R3+R4)/(R3−R4)≤8.00;
- 8.00≤d1/d2≤15.00;
- 0.50≤f3/f≤0.75;
- −5.00≤R2/R1≤−2.50;
- and
- −0.70≤f4/f≤−0.40;
- where
- f denotes a focal length of the camera optical lens;
- f2 denotes a focal length of the second lens;
- f3 denotes a focal length of the third lens;
- f4 denotes a focal length of the fourth lens;
- R1 denotes a curvature radius of the object-side surface of the first lens;
- R2 denotes a curvature radius of the image-side surface of the first lens;
- R3 denotes a curvature radius of the object-side surface of the second lens;
- R4 denotes a curvature radius of the image-side surface of the second lens;
- d1 denotes an on-axis thickness of the first lens;
- and
- d2 denotes an on-axis distance from the image-side surface of the first lens to the object-side surface of the second lens.
Dependencies are inferred from the claim text.