A camera lens includes an open aperture; and a falcate first lens having a positive refractive power with a convex surface toward an imaging surface side. The camera lens satisfies specific conditions.
1. A camera lens comprising:
an open aperture;
a falcate first lens having a positive refractive power with a convex surface toward an imaging surface side; wherein
the camera lens satisfies the following conditions (1)˜(4):
1.70≤( R 1+ R 2)/( R 1 −R 2)≤1.90 (1)
0.30 ≤D 1/ f≤ 0.45 (2)
0.90 ≤Y/f≤ 1.00 (3)
1.50≤( Y/f )×2ω≤1.70 (4)
where,
R 1 : curvature radius of the first lens' object side surface;
R 2 : curvature radius of the first lens' image side surface;
d 1 : center thickness of the first lens L 1 ;
f: overall focal distance of the camera lens;
Y: Max image height;
2ω: total angle of view.
2. The camera lens as described in claim 1 further satisfying the following condition (5):
0.50 ≤f/TL≤ 0.60 ( 5 )
where,
f: overall focal distance of the camera lens;
TL: axial distance from object side surface to the imaging surface side of the first lens L 1 .
3. The camera lens as described in claim 1 further satisfying the following condition (6):
1.35 ≤BF/f≤ 1.45 (6)
where,
f: overall focal distance of the camera lens;
BF: axial distance from image side surface to the imaging surface side of the first lens L 1 .
4. The camera lens as described in claim 1 further satisfying the following condition (7):
1.53≤ nd 1≤1.60 ( 7 )
where,
nd 1 : refractive power the first lens L 1 's line d.