Imaging lens assembly, photographing module, and electronic device

Abstract

An imaging lens assembly, from the object side to the image side, sequentially includes a first lens with negative refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a focusing assembly, a fourth lens with negative refractive power, a fifth lens with positive refractive power, and a sixth lens with negative refractive power. When the imaging lens assembly meets specific conditions, it can achieve not only fast focusing, miniaturization, wide angle of view, high image quality, and ease of assembly, but also reduce the size of the lens front end.

Claims

1. An imaging lens assembly, comprising, from the object side to the image side, the following in sequence: a first lens having negative refractive power; a second lens having negative refractive power; a third lens having positive refractive power; a focusing assembly; a fourth lens having negative refractive power; a fifth lens having positive refractive power; and a sixth lens having negative refractive power; wherein, Excluding the focusing assembly, the total number of lenses with refractive power in the imaging lens group is 6, the focal length of the imaging lens group is f, the focal length of the second lens is f2, and the following condition is satisfied: -8.99 < f2 / f < -3.

35.

2. The imaging lens group according to claim 1, wherein the distance from the object-side surface of the first lens to the imaging surface of the imaging lens group on the optical axis is TL, the thickness of the first lens on the optical axis is CT1, and satisfies the following condition: 9.98 < TL / CT1 < 21.

01.

3. The imaging lens group according to claim 1, wherein the maximum viewing angle of the imaging lens group is FOV, the angle at which the principal ray at the maximum viewing angle of the imaging lens group is incident on the imaging surface of the imaging lens group is CRA, and satisfies the following condition: 2.08 < FOV / CRA < 3.

58.

4. The imaging lens group according to claim 1, wherein the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the imaging lens group is TL, half of the maximum field of view of the imaging lens group is HFOV, and satisfies the following condition: 3.63 mm < TL / tan(HFOV) < 7.04 mm.

5. The imaging lens group according to claim 1, wherein the focal length of the first lens is f1, the focal length of the fourth lens is f4, and the following condition is satisfied: 1.05 < f4 / f1 < 5.

59.

6. The imaging lens group according to claim 1, wherein the radius of curvature of the object-side surface of the second lens is R3, the radius of curvature of the image-side surface of the second lens is R4, and satisfies the following condition: 14.66 < R4 / R3 < 47.

01.

7. The imaging lens assembly according to claim 1, wherein the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the first lens is R2, and satisfies the following condition: 1.9 < R1 / R2 < 7.

2.

8. The imaging lens group according to claim 1, wherein the first lens has a dispersion coefficient of vd1, the second lens has a dispersion coefficient of vd2, the third lens has a dispersion coefficient of vd3, and the fourth lens has a dispersion coefficient of vd4, and satisfies the following condition: 2.19 < (vd1 + vd3) / (vd2 + vd4) < 3.

94.

9. The imaging lens group according to claim 1, wherein the radius of curvature of the object-side surface of the first lens is R1, the radius of curvature of the image-side surface of the fifth lens is R10, and satisfies the following condition: -7.92 < R1 / R10 < -1.

83.

10. The imaging lens group according to claim 1, wherein the focal length of the fifth lens is f5, the maximum effective optical radius of the image-side surface of the first lens is CA2, and satisfies the following condition: 1.07 < f5 / CA2 < 3.

84.

11. The imaging lens group according to claim 1, wherein the radius of curvature of the object-side surface of the fifth lens is R9, the maximum effective optical radius of the object-side surface of the first lens is CA1, and satisfies the following condition: 6.94 < R9 / CA1 < 311.

14.

12. The imaging lens group according to claim 1, wherein the focal length of the fourth lens is f4, the entrance pupil diameter of the imaging lens group is EPD, and satisfies the following condition: -18.13 < f4 / EPD < -5.

77.

13. The imaging lens group according to claim 1, wherein the focal length of the sixth lens is f6, the distance from the image-side surface of the sixth lens to the imaging surface of the imaging lens group on the optical axis is BFL, and satisfies the following condition: -3.44 < f6 / BFL < -1.

49.

14. The imaging lens group according to claim 1, wherein the focal length of the first lens is f1, the distance on the optical axis from the image-side surface of the third lens to the object-side surface of the fourth lens is TR6R7, and satisfies the following condition: -9.64 < f1 / TR6R7 < -4.

48.

15. The imaging lens group according to claim 1, wherein the distance on the optical axis from the object-side surface of the first lens to the imaging surface of the imaging lens group is TL, the distance on the optical axis between the first lens and the second lens is T12, and satisfies the following condition: 6.16 < TL / T12 < 14.

91.

16. The imaging lens group according to claim 1, wherein the distance from the object-side surface of the first lens to the imaging surface of the imaging lens group on the optical axis is TL, and satisfies the following condition: 2.08 < TL / f < 4.

28.

17. A camera module comprising: an imaging lens group as described in any one of claims 1 to 16; and an image sensor disposed on the imaging surface of the imaging lens group.

18. An electronic device comprising: an imaging lens assembly as described in any one of claims 1 to 16; an image sensor disposed on the imaging surface of the imaging lens assembly; and a control processing module electrically connected to the focusing assembly and the image sensor.

Images