Camera optical lens
AssigneeChangzhou Raytech Optronics Co., Ltd.
InventorWanxia Li
Life of this patent
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Abstract
The present disclosure relates to optical lens, and provides a camera optical lens including eight lenses, 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 negative refractive power, a fourth lens having a positive refractive power, a fifth lens having a positive refractive power, a sixth lens having a negative refractive power, a seventh lens having a positive refractive power, and an eighth lens having a negative refractive power; wherein the camera optical lens satisfies the following conditions: 0.95≤f/TTL; −4.50≤f2/f≤−1.90; and 0.30≤(R13+R14)/(R13−R14)≤1.00. The camera optical lens can achieve good optical performance while meeting design requirements for both a long focal length and ultra-thinness.
Claims11
A camera optical lens comprising eight lenses, 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 negative refractive power, a fourth lens having a positive refractive power, a fifth lens having a positive refractive power, a sixth lens having a negative refractive power, a seventh lens having a positive refractive power, and an eighth lens having a negative refractive power;
- wherein the camera optical lens satisfies the following conditions:
- 0.95≤f/TTL;
- −4.50≤f2/f≤−1.90;
- and
- 0.30≤(R13+R14)/(R13−R14)≤1.00;
- where
- f denotes a focal length of the camera optical lens;
- 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;
- f2 denotes a focal length of the second lens;
- R13 denotes a central curvature radius of an object-side surface of the seventh lens;
- and
- R14 denotes a central curvature radius of an image-side surface of the seventh lens.
Dependencies are inferred from the claim text.