Camera lens
AssigneeAAC Optics Solutions Pte. Ltd.
InventorHiroyuki Teraoka
Life of this patent
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Abstract
The present invention provides a camera lens having good optical characteristics, a wide angle, and a small size, and constituted by seven lenses. The camera lens includes, from an object side: a first lens having a negative refractive power; a second lens having positive refractive power; a third lens having positive refractive power; a fourth lens having a negative refractive power; a fifth lens having positive refractive power; a sixth lens having a negative refractive power; and a seventh lens having a negative refractive power. The camera lens satisfies given relational formulas.
Claims5
A camera lens, comprising, sequentially from an object side:
- 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;
- a sixth lens having a negative refractive power;
- and
- a seventh lens having a negative refractive power,
- wherein the camera lens satisfies relational formulas (1)-(3):
- −2.00≤f1/f≤−1.67 (1)
- 1.20≤f2/f≤1.60 (2)
- 10.00≤|R3/R4|≤60.00 (3)
- where,
- f represents a focal length of the camera lens as a whole,
- f1 represents a focal length of the first lens,
- f2 represents a focal length of the second lens,
- R3 represents a curvature radius of an object side surface of the second lens, and
- R4 represents a curvature radius of an image side surface of the second lens.
Dependencies are inferred from the claim text.