Optical lens assembly
An optical lens assembly includes a stop, and includes, in order from the object side to the image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens; wherein a distance from an object-side surface of the first lens element to the image plane along the optical axis is TL, a focal length of the system is f, a maximum field of view of the optical lens assembly is FOV, a maximum optical effective radius of the object-side surface of the first lens is CA1, and the following condition is satisfied: 702.32<TL*(f*FOV)/CA1<1286.23.
1 . An optical lens assembly comprising a stop, and in order from an object side to an image side, comprising:
a first lens with negative refractive power, the first lens comprising an object-side surface and an image-side surface, wherein the object-side surface of the first lens is convex near an optical axis;
a second lens with positive refractive power;
a third lens with positive refractive power;
a fourth lens with negative refractive power;
a fifth lens with positive refractive power; and
a sixth lens with negative refractive power, the sixth lens comprising an object-side surface and an image-side surface, wherein the image-side surface of the sixth lens is concave near the optical axis;
wherein a distance from the object-side surface of the first lens to an image plane along the optical axis is TL, a focal length of the system is f, a maximum field of view of the optical lens assembly is FOV, a maximum optical effective radius of the object-side surface of the first lens is CA1, a maximum image height of the optical lens assembly is IMH, and the following condition is satisfied: 702.32 mm*°<TL*(f*FOV)/CA1<1286.23 mm*°, and 6.85 mm<TL*(IMH/f)<11.55 mm.
2 . The optical lens assembly according to claim 1 , wherein a maximum optical effective radius of the image-side surface of the sixth lens is CA12, an incident angle where a chief ray is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, and the following condition is satisfied: 26.85°<(CA1/CA12)*CRA<53.06°.
3 . The optical lens assembly according to claim 1 , wherein a maximum image height of the optical lens assembly is IMH, a maximum optical effective radius of the image-side surface of the sixth lens is CA12, an incident angle where a chief ray is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, and the following condition is satisfied: 34.51°<(IMH/CA12)*CRA<58.29°.
4 . The optical lens assembly according to claim 1 , wherein a distance from the image-side surface of the sixth lens to the image plane along the optical axis is BFL, a distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens to a maximum optical effective radius position of the image-side surface of the sixth lens is TDP12, a maximum image height of the optical lens assembly is IMH, a maximum optical effective radius of the image-side surface of the sixth lens is CA12, and the following condition is satisfied: 51.3<ATAN((BFL−TDP12)/(IMH−CA12))<85.83°.
5 . The optical lens assembly according to claim 1 , wherein a maximum image height of the optical lens assembly is IMH, an incident angle where a chief ray is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, and the following condition is satisfied: 30.55°<(IMH/CA1)*CRA<58.19°.
6 . The optical lens assembly according to claim 5 , wherein an entrance pupil diameter of the optical lens assembly is EPD, and the following condition is satisfied: 12.42 mm<TL*CA1/EPD<26.15 mm.
7 . The optical lens assembly according to claim 1 , wherein an incident angle where a chief ray is incident on an image plane at a maximum view angle of the optical lens assembly is CRA, and the following condition is satisfied: 21.84 mm<TL*(FOV/CRA)<38.12 mm.
8 . The optical lens assembly according to claim 7 , wherein the following condition is satisfied: 101.34°<(TL*CRA)/f<175.96°.
9 . The optical lens assembly according to claim 1 , wherein an entrance pupil diameter of the optical lens assembly is EPD, and the following condition is satisfied: 1.65 mm<TL*EPD/IMH<2.76 mm.
10 . The optical lens assembly according to claim 1 , wherein a maximum optical effective radius of the image-side surface of the first lens is CA2, a curvature radius of the image-side surface of the first lens is R2, a maximum image height of the optical lens assembly is IMH, and the following condition is satisfied: 1.33<(2*CA2)/R2<2.27.
11 . The optical lens assembly according to claim 1 , wherein a maximum optical effective radius of the image-side surface of the sixth lens is CA12, a maximum image height of the optical lens assembly is IMH, and the following condition is satisfied: 2.12<(CA1/CA12)*(TL/IMH)<4.10.
12 . The optical lens assembly according to claim 1 , wherein a focal length of the third lens is f3, a focal length of the fifth lens is f5, and the following condition is satisfied: 12.72 mm<TL*(f3+f5)/f<25.74 mm.
13 . The optical lens assembly according to claim 1 , wherein a maximum image height of the optical lens assembly is IMH, a curvature radius of the image-side surface of the first lens is R2, and the following condition is satisfied: 1.62 mm −1 <(TL/IMH)/R2<2.75 mm −1 .
14 . The optical lens assembly according to claim 1 , wherein a distance from the stop to the image plane along the optical axis is SL, and the following condition is satisfied: 12.9 mm<TL*SL/f<21.33 mm.