Lens module

Abstract

A lens module includes a lens formed of a first material and a lens barrel formed of a second material different from the first material and including a receiving space for accommodating the lens. A protrusion protruding toward the outer circumferential surface of the lens is disposed in the receiving space and satisfies the condition 0.3 < G / X < 0.8, where G is the distance between the end of the protrusion and the outer circumferential surface of the lens, and X is the maximum expansion deformation of the lens.

Claims

1. A lens module, comprising: The lens is formed of the first material; The lens barrel is formed of a second material different from the first material and includes a receiving space for accommodating the lens, wherein a protrusion protruding toward the outer circumferential surface of the lens is provided in the receiving space, and wherein the condition 0.3 < G / X < 0.8 is satisfied, where G is the distance between the end of the protrusion and the outer circumferential surface of the lens, and X is the maximum expansion deformation of the lens.

2. The lens module as claimed in claim 1, wherein the protrusion has a cross-sectional area decreasing from the inner circumferential surface of the lens barrel toward the optical axis of the lens.

3. The lens module as claimed in claim 1, wherein the protrusion includes: The first extension portion has a first cross-sectional shape; And a second extension having a second cross-sectional shape.

4. The lens module as claimed in claim 3, wherein the first cross-sectional shape is rectangular and the second cross-sectional shape is triangular.

5. The lens module as claimed in claim 1, wherein the protrusion comprises a plurality of protrusions disposed at predetermined distances along the inner circumferential surface of the lens barrel.

6. The lens module as claimed in claim 1, wherein the protrusion is arranged circumferentially along the inner circumferential surface of the lens barrel.

7. The lens module as claimed in claim 1, wherein the first material has a lower strength than the second material.

8. The lens module as claimed in claim 1, wherein the receiving space comprises a cross-sectional area that gradually decreases from one end of the lens barrel toward the other end.

9. A lens module, comprising: lens; The lens barrel houses the lens; A support member is disposed between the lens and the lens barrel, wherein the support member includes a first protrusion protruding toward the outer circumferential surface of the lens, and wherein the condition 0.3 < G1 / X < 0.8 is satisfied, where G1 is the distance between the end of the first protrusion and the outer circumferential surface of the lens, and X is the maximum expansion deformation of the lens.

10. The lens module as claimed in claim 9, wherein the step supporting the support member is disposed on the inner circumferential surface of the lens barrel.

11. The lens module as claimed in claim 9, wherein the first protrusion comprises a plurality of protrusions disposed at predetermined distances along the circumferential direction of the support member.

12. The lens module as claimed in claim 9, wherein the first protrusion has a decreasing cross-sectional area away from the support member.

13. The lens module as claimed in claim 9, wherein the first protrusion includes: A first extension having a first cross-sectional shape; And a second extension having a second cross-sectional shape.

14. The lens module as claimed in claim 13, wherein the first cross-sectional shape is rectangular and the second cross-sectional shape is triangular.

15. The lens module as claimed in claim 9, wherein the support member further includes a second protrusion projecting toward the inner circumferential surface of the lens barrel.

16. The lens module as claimed in claim 15, wherein the first protrusion and the second protrusion are alternately arranged along the circumferential direction of the support member.

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