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US 9,804,365 B2Granted
Camera lens
AssigneeAac Acoustic Technologies (Shenzhen) Co., Ltd.
InventorHiroyuki Teraoka
Life of this patent
Estimating the term…
Abstract
The present invention discloses a camera lens composed of five ultrathin and high-luminous flux wide angle lenses with excellent optical properties. The lenses are lined up in turn from the object side as follows: a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, a fourth lens with positive refractive power a fifth lens with negative refractive power. The camera lens meets specific conditions.
Claims6
A camera lens, comprising, lined up in turn from the object side:
- a first lens with positive refractive power;
- a second lens with negative refractive power;
- a third lens with negative refractive power;
- a fourth lens with positive refractive power;
- a fifth lens with negative refractive power;
- wherein the camera lens satisfying the following specific conditions:
- 0.80≦f1/f≦1.00
- −5.00≦f3/f≦−3.00
- −0.80≦(R1+R2)/(R1−R2)≦−0.30
- 0.05≦(R3+R4)/(R3−R4)≦0.40
- 0.25≦d7/f≦0.35
- where, f is the overall focal distance of the camera lens;
- f1 is the focal distance of the first lens;
- f3 is the focal distance of the third lens;
- R1 is the object side curvature radius of the first lens;
- R2 is the image side curvature radius of the first lens;
- R3 is the object side curvature radius of the second lens;
- R4 is the image side curvature radius of the second lens;
- d7 is the center thickness of the fourth lens.
16 more elements
Dependencies are inferred from the claim text.