Camera optical lens
AssigneeRaytech Optical (Changzhou) Co., Ltd.
InventorJia Chen
Life of this patent
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Abstract
The present disclosure provides a camera optical lens including, from an object side to an image side in sequence: eight lenses which are, from an object side to an image side in sequence: a first lens having a positive refractive power, a second having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a positive refractive power; and the camera optical lens satisfies conditions of: 0.95≤f/TTL; 2.00≤f2/f≤5.00; and 2.50≤(R15+R16)/(R15−R16)≤15.00. The camera optical lens can achieve good optical performance while meeting the design requirements for ultra-thinness and long focal length.
Claims10
A camera optical lens comprising eight lenses which are, from an object side to an image side in sequence:
- a first lens having a positive refractive power, a second having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a positive refractive power;
- wherein the camera optical lens satisfies the conditions of:
- 0.95≤f/TTL;
- 2.00≤f2/f≤5.00;
- and
- 2.50≤(R15+R16)/(R15−R16)≤15.00;
- where
- f denoted a focal length of the camera optical lens;
- f2 denotes a focal length of the second lens;
- R15 denotes a central curvature radius of an object-side surface of the eighth lens;
- R16 denotes a central curvature radius of an image-side surface of the eighth lens;
- and
- 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.
Dependencies are inferred from the claim text.