Lens module and electronic device
A plastic lens element includes an effective optical portion and a peripheral portion in order from an optical axis to an edge thereof. The peripheral portion includes a plurality of rib structures, wherein each of the rib structures has a strip shape in a radial direction of the optical axis, and the rib structures are arranged around the effective optical portion and indirectly connected to the effective optical portion.
1. A lens module, comprising an optical lens assembly, wherein the optical lens assembly comprises at least five lens elements, at least one of the lens elements is a plastic lens element, and in order from an optical axis of the plastic lens element to an edge thereof, the plastic lens element comprises:
an effective optical portion; and
a peripheral portion, comprising:
a plurality of strip-shaped rib structures, wherein each of the strip-shaped rib structures has a strip shape in a radial direction of the optical axis, and the strip-shaped rib structures are arranged around the effective optical portion and indirectly connected to the effective optical portion.
2. The lens module of claim 1 , wherein the strip-shaped rib structures and the plastic lens element are formed integrally.
3. The lens module of claim 1 , wherein a width of each of the strip-shaped rib structures in a circumferential direction of the plastic lens element is (w), and the following condition is satisfied:
0.01 mm<w<0.05 mm.
4. The lens module of claim 2 , wherein at least one of two surfaces of the effective optical portion has a wavy shape.
5. The lens module of claim 1 , wherein each of the strip-shaped rib structures has an inclined surface having an angle with the optical axis of the plastic lens element.
6. The lens module of claim 1 , wherein the optical lens assembly further comprises:
at least one optical element abutted with the plastic lens element, wherein the strip-shaped rib structures of the plastic lens element do not have contact with the optical element.
7. The lens module of claim 1 , wherein the peripheral portion of the plastic lens element further comprises:
an object-side abutting surface disposed on a surface of the peripheral portion facing an object;
wherein the optical lens assembly further comprises:
at least one optical element abutted with the object-side abutting surface.
8. The lens module of claim 7 , wherein the strip-shaped rib structures of the plastic lens element are disposed on the surface of the peripheral portion facing the object, and the strip-shaped rib structures are farther from the effective optical portion than the object-side abutting surface is from the effective optical portion.
9. The lens module of claim 7 , wherein the peripheral portion of the plastic lens element further comprises:
an image-side abutting surface disposed on another surface of the peripheral portion facing an image surface, wherein the image-side abutting surface is farther from the effective optical portion than the object-side abutting surface is from the effective optical portion.
10. An electronic device, comprising:
the lens module of claim 1 .
11. A lens module, comprising an optical lens assembly, wherein the optical lens assembly comprises at least two optical elements, one of the optical elements is a plastic lens element, and in order from an optical axis of the plastic lens element to an edge thereof, the plastic lens element comprises:
an effective optical portion; and
a peripheral portion, comprising:
a plurality of strip-shaped rib structures, wherein each of the strip-shaped rib structures has a strip shape in a radial direction of the optical axis, the strip-shaped rib structures are arranged around the effective optical portion and indirectly connected to the effective optical portion, and the strip-shaped rib structures do not have contact with other ones of the optical elements.
12. The lens module of claim 11 , wherein the strip-shaped rib structures and the plastic lens element are formed integrally.
13. The lens module of claim 11 , wherein a width of each of the strip-shaped rib structures in a circumferential direction of the plastic lens element is (w), and the following condition is satisfied:
0.01 mm<w<0.05 mm.
14. The lens module of claim 12 , wherein at least one of two surfaces of the effective optical portion has a wavy shape.
15. The lens module of claim 11 , wherein each of the strip-shaped rib structures has an inclined surface having an angle with the optical axis of the plastic lens element.
16. The lens module of claim 11 , wherein the peripheral portion of the plastic lens element further comprises:
an object-side abutting surface disposed on a surface of the peripheral portion facing an object, wherein at least another one of the optical elements is abutted with the object-side abutting surface.
17. The lens module of claim 16 , wherein the strip-shaped rib structures of the plastic lens element are disposed on the surface of the peripheral portion facing the object, and the strip-shaped rib structures are farther from the effective optical portion than the object-side abutting surface is from the effective optical portion.
18. The lens module of claim 16 , wherein the peripheral portion of the plastic lens element further comprises:
an image-side abutting surface disposed on another surface of the peripheral portion facing an image surface, wherein the image-side abutting surface is farther from the effective optical portion than the object-side abutting surface is from the effective optical portion.
19. An electronic device, comprising:
the lens module of claim 11 .