Camera optical lens
AssigneeRaytech Optical (Changzhou) Co., Ltd.
InventorWei Sun
Life of this patent
Estimating the term…
Abstract
Disclosed is 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 positive refractive power; a third lens having a positive refractive power; a fourth lens having a negative refractive power; and a fifth lens having a negative refractive power; the camera optical lens satisfies: 1.20≤f1/f≤4.00; 1.80≤d5/d3≤3.50; and 1.50≤(R7+R8)/(R7−R8); where, f denotes a focus length of camera optical lens; f1 denotes a focus length of the first lens; d3 denotes an on-axis thickness of second lens; d5 denotes an on-axis thickness of the third lens; R7 and R8 denote central curvature radii of object and image side surfaces of the fourth lens respectively; and R8 denotes a central curvature radius of an image side surface of the fourth lens.
Claims10
A camera optical lens, comprising five lenses in total, wherein, the five lenses are, from an object side to an image side in sequence:
- a first lens having a positive 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;
- and
- a fifth lens having a negative refractive power;
- wherein, the camera optical lens satisfies the following conditions:
- 1.20≤f1/f≤400;
- 80≤d5/d3≤3.50;
- and
- 1.50≤(R7+R8)/(R7−R8);
- where,
- f denotes a focus length of the camera optical lens;
- f1 denotes a focus length of the first lens;
- d3 denotes an on-axis thickness of the second lens;
- d5 denotes an on-axis thickness of the third 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.
Dependencies are inferred from the claim text.