Imaging lens assembly and electronic device
An imaging lens assembly includes a plurality of lens elements, wherein at least one of the lens elements is a dual molded lens element. The dual molded lens element includes a light transmitting portion and a light absorbing portion. The light transmitting portion includes an effective optical section. The light absorbing portion is located on at least one surface of an object-side surface and an image-side surface of the dual molded lens element, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, and the light absorbing portion includes an opening. The opening is non-circular and disposed correspondingly to the effective optical section.
1. An imaging lens assembly, comprising a plurality of lens elements, wherein at least one of the lens elements is a dual molded lens element, and the dual molded lens element comprises:
a light transmitting portion comprising:
an effective optical section; and
a light absorbing portion located on at least one surface of an object-side surface and an image-side surface of the dual molded lens element, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, the light transmitting portion and the light absorbing portion are formed by a dual-shot injection molding method, and the light absorbing portion comprises:
an opening, which is non-circular and disposed correspondingly to the effective optical section;
wherein a minimum distance through an optical axis of the opening is ψBmin, a maximum outer diameter of the light transmitting portion is ψL, and the following condition is satisfied:
0.20<ψBmin/ψL<0.75.
2. The imaging lens assembly of claim 1 , wherein the light absorbing portion further comprises:
a ring-shaped recess structure, which is recessed along a direction parallel to the optical axis from a surface of the light absorbing portion.
3. The imaging lens assembly of claim 2 , wherein a depth parallel to the optical axis of the ring-shaped recess structure is w, and the following condition is satisfied:
0.015 mm<w<0.35 mm.
4. The imaging lens assembly of claim 1 , wherein the light absorbing portion further comprises:
a ring-shaped protrusion structure surrounding the opening.
5. The imaging lens assembly of claim 4 , wherein a width along a radial direction of the optical axis of the ring-shaped protrusion structure is t, and the following condition is satisfied:
0.04 mm<t<0.80 mm.
6. The imaging lens assembly of claim 1 , wherein the opening is polygon.
7. The imaging lens assembly of claim 6 , wherein a number of sides of the opening is m, and the following condition is satisfied:
3<m<13.
8. The imaging lens assembly of claim 1 , wherein a part of the effective optical section, which is located on the surface of the object-side surface and the image-side surface of the dual molded lens element, is aspheric.
9. The imaging lens assembly of claim 8 , wherein the light absorbing portion is located on the image-side surface of the dual molded lens element, and a point closest to an image surface of the effective optical section is closer to the image surface than the light absorbing portion.
10. The imaging lens assembly of claim 8 , wherein the part of the effective optical section, which is located on the surface of the object-side surface and the image-side surface of the dual molded lens element, comprises at least one inflection point.
11. The imaging lens assembly of claim 8 , wherein the part of the effective optical section, which is located on the surface of the object-side surface and the image-side surface of the dual molded lens element, comprises a non-circular outer edge.
12. The imaging lens assembly of claim 1 , wherein the maximum outer diameter of the light transmitting portion is ψL, a maximum outer diameter of the light absorbing portion is ψM, and the following condition is satisfied:
ψL<ψM.
13. The imaging lens assembly of claim 1 , wherein the light absorbing portion further comprises:
a rough surface, which is not in contact with the light transmitting portion.
14. The imaging lens assembly of claim 1 , wherein the light absorbing portion further comprises:
an anti-reflection coating coated on at least part of a surface of the light absorbing portion, which is not in contact with the light transmitting portion.
15. The imaging lens assembly of claim 1 , wherein the minimum distance through the optical axis of the opening is ψBmin, a maximum distance through the optical axis of the opening is ψBmax, and the following condition is satisfied:
0.35<ψBmin/ψBmax<0.75.
16. The imaging lens assembly of claim 1 , wherein the dual molded lens element is closest to an image surface among the lens elements of the imaging lens assembly.
17. The imaging lens assembly of claim 16 , further comprising:
a glue material connected to the light absorbing portion.
18. An electronic device, comprising:
an imaging lens module comprising:
the imaging lens assembly of claim 1 ; and
an image sensor, wherein the image sensor is disposed on an image surface of the imaging lens assembly.
19. An imaging lens assembly, comprising a plurality of lens elements, wherein at least one of the lens elements is a dual molded lens element, and the dual molded lens element comprises:
a light transmitting portion comprising:
an effective optical section, wherein a part of the effective optical section located on at least one surface of an object-side surface and an image-side surface of the dual molded lens element comprises a non-circular outer edge; and
a light absorbing portion located on the surface of the object-side surface and the image-side surface of the dual molded lens element, wherein a plastic material and a color of the light absorbing portion are different from a plastic material and a color of the light transmitting portion, the light transmitting portion and the light absorbing portion are formed by a dual-shot injection molding method, and the light absorbing portion comprises:
an opening, which is disposed correspondingly to the non-circular outer edge of the effective optical section;
wherein a minimum distance through an optical axis of the non-circular outer edge is ψWmin, a maximum distance through the optical axis of the non-circular outer edge is ψWmax, and the following condition is satisfied:
0.35<ψWmin/ψWmax<0.75.
20. The imaging lens assembly of claim 19 , wherein the light absorbing portion is located on the image-side surface of the dual molded lens element and further comprises:
a ring-shaped recess structure, which is recessed along a direction parallel to the optical axis from a surface of the light absorbing portion, wherein a depth parallel to the optical axis of the ring-shaped recess structure is w, and the following condition is satisfied:
0.015 mm<w<0.35 mm.
21. The imaging lens assembly of claim 19 , wherein the light absorbing portion further comprises:
an anti-reflection coating coated on at least part of a surface of the light absorbing portion, which is not in contact with the light transmitting portion.
22. The imaging lens assembly of claim 19 , wherein the dual molded lens element is closest to an image surface among the lens elements of the imaging lens assembly.
23. The imaging lens assembly of claim 19 , further comprising:
a glue material connected to the light absorbing portion.
24. The imaging lens assembly of claim 19 , wherein a number of the lens elements of the imaging lens assembly is N, and the following condition is satisfied:
5≤N<10.
25. An electronic device, comprising:
an imaging lens module comprising:
the imaging lens assembly of claim 19 ; and
an image sensor, wherein the image sensor is disposed on an image surface of the imaging lens assembly.