Camera optical lens
AssigneeChangzhou Raytech Optronics Co., Ltd.
InventorJia Chen
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to optical lens, and provides a camera optical lens including from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; wherein the camera optical lens satisfies the following conditions: 0.95≤f/TTL; −5.00≤f2/f≤−2.50; and 2.50≤(R11+R12)/(R11−R12)≤15.00. The camera optical lens can achieve good optical performance while meeting design requirements for a large aperture, a long focal length and ultra-thinness.
Claims10
A camera optical lens comprising from an object side to an image side in sequence:
- a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens, and an eighth lens having a negative refractive power;
- wherein the camera optical lens satisfies the following conditions:
- 0.95≤f/TTL;
- −5.00≤f2/f≤−2.50;
- and
- 2.50≤(R11+R12)/(R11−R12)≤15.00;
- where
- TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis;
- f denotes a focal length of the camera optical lens;
- f2 denotes a focal length of the second lens;
- R11 denotes a central curvature radius of an object-side surface of the sixth lens;
- and
- R12 denotes a central curvature radius of an image-side surface of the sixth lens.
Dependencies are inferred from the claim text.