Patent ID: 11906704
Assignee: RAYTECH OPTICAL (CHANGZHOU) CO., LTD
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A camera optical lens, comprising six lenses in total, the six lenses are, from an object side to an image side in sequence:
a first lens having a negative refractive power;
a second lens having a positive 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; and
a sixth lens having a negative refractive power;
wherein, the camera optical lens satisfies the following conditions:
−4.50≤f1/f≤−2.20;
2.00≤f2/f≤5.50;
−20.00≤(R3+R4)/(R3−R4)≤−2.50;
1.50≤(R7+R8)/(R7−R8)≤10.00; and
3.00≤d9/d10≤10.00;
where,
f denotes a focus length of the camera optical lens;
f1 denotes a focus length of the first lens;
f2 denotes a focus length of the second lens;
d9 denotes an on-axis thickness of the fifth lens;
d10 denotes an on-axis distance from an image side surface of the fifth lens to an object side surface of the sixth lens;
R3 denotes a central curvature radius of an object side surface of the second lens;
R4 denotes a central curvature radius of an image side surface of the second lens,
R7 denotes a central curvature radius of an object side surface of the fourth lens; and
R8 denotes a central curvature radius of an image side surface of the fourth lens.