TW202232140A - Lens assembly and lens module including the same - Google Patents

Abstract

A lens assembly is provided, including: a first lens and a second lens. The first lens includes a first convex portion and a first extending portion connected with the first convex portion, and the first convex portion includes a first inner side portion, a top portion and a first outer side portion. The second lens includes a first concave portion and a second extending portion connected with first concave portion, and the first concave portion includes a second inner side portion, a bottom portion and a second outer side portion. The first inner side portion at least partially connects with the second inner side portion, the first outer side portion at least partially connects with the second outer side portion, and the first extending portion at least partially connects with the second extending portion. A lens module is further provided, including: the lens assembly as described above, a barrel and an image sensing member.

Description

Lens group and lens module including the same

The present invention relates to a lens assembly and a lens module including the same.

Generally, in the assembly of a lens, a plurality of lenses are installed in the lens barrel holder by means of tight fitting or adhesive bonding. Therefore, when the circularity of the lens barrel holder or each of the lenses is not good, it is easy to cause problems of the plurality of lenses. The relative deviation of the central axis or the deformation of the surface shape of each lens will affect the optical performance of the lens and thus lead to a decrease in the production yield.

In order to solve the aforementioned problems, the conventional lens sets corresponding concave-convex structures on two adjacent lenses to facilitate alignment connection. However, the aforementioned assembly method does not consider the local force direction of each of the lenses. In actual assembly, the place where each of the lenses bears against each other is prone to incline deformation, which still cannot effectively overcome the relative deviation of the central axes of the plurality of lenses or the relative displacement of each of the lenses. Problems such as the force and deformation of the lens surface shape, there are shortcomings that need to be improved urgently.

Therefore, it is necessary to provide a novel and progressive lens assembly and a lens module including the same to solve the above problems.

The main purpose of the present invention is to provide a lens assembly and a lens module including the lens assembly, which can accurately align and improve the production yield.

In order to achieve the above object, the present invention provides a lens set including: a first lens and a second lens. The first lens has a first optically effective area surrounding a first axis and a first non-optically effective area surrounding the outer side of the first optically effective area, wherein the first non-optically effective area includes a first convex portion and a first extension portion connected with the first protruding portion, the first protruding portion includes a first inner portion, a top portion and a first outer portion, the top portion connecting the first inner portion and the first outer portion . The second lens has a second optically effective area surrounding a second axis and a second non-optically effective area surrounding the outer side of the second optically effective area, wherein the second non-optically effective area includes a first recess and A second extension portion is connected with the first recessed portion, the first recessed portion includes a second inner portion, a bottom portion and a second outer portion, and the bottom portion is connected with the second inner portion and the second outer portion. Wherein, the first inner portion is at least partially in contact with the second inner portion, the first outer portion is at least partially in contact with the second outer portion, and the first extension portion is at least partially in contact with the second extension portion.

In order to achieve the above object, the present invention further provides a lens module, comprising: a lens assembly as described above, a lens barrel holder and an image sensing element. The lens barrel seat accommodates the lens group and includes an object side and an image side opposite to the object side; the image sensing element is located on the image side.

The following examples only illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention, and are described together first.

Please refer to FIGS. 1 to 4 , which show a first preferred embodiment of the present invention. The lens set 1 of the present invention includes a first lens 10 and a second lens 20 .

The first lens 10 has a first optically effective area 11 surrounding a first axis A1 and a first non-optically effective area 12 surrounding the outer side of the first optically effective area 11 , wherein the first non-optically effective area 12 It includes a first protruding portion 13 and a first extending portion 14 connected to the first protruding portion 13 . The first protruding portion 13 includes a first inner portion 131 , a top portion 132 and a first outer portion 133 . The top portion 132 connects the first inner portion 131 and the first outer portion 133 . The second lens 20 has a second optically effective area 21 surrounding a second axis A2 and a second non-optically effective area 22 surrounding the outer side of the second optically effective area 21 , wherein the second non-optically effective area 22 including a first concave portion 23 and a second extending portion 24 connected to the first concave portion 23, the first concave portion 23 includes a second inner portion 231, a bottom portion 232 and a second outer portion 233, the bottom portion 232 is connected The second inner portion 231 and the second outer portion 233 . The first inner portion 131 is at least partially in contact with the second inner portion 231 , the first outer portion 133 is at least partially in contact with the second outer portion 233 , and the first extending portion 14 and the second extending portion 24 are at least partially in contact. Partial contact can disperse the force to reduce the force and deformation of the mirror surfaces of the first lens 10 and the second lens 20 , and can accurately align, thereby effectively improving the production yield.

Referring to FIG. 3 and FIG. 4 , in this embodiment, the first inner portion 131 and the first outer portion 133 respectively include a slope inclined to the first axis A1 , the second inner portion 231 and the first The two outer portions 233 respectively include an inclined surface inclined to the second axial direction A2, which can effectively disperse the force in an oblique direction without being easily deformed. In detail, the first extension portion 14 has a first inner extension portion 141 and a first outer extension portion 142 , the first inner extension portion 141 is located inside the first convex portion 13 , and the first outer extension portion 142 is located at the inner side of the first convex portion 13 . The outer side of the first convex portion 13; the second extension portion 24 has a second inner extension portion 241 and a second outer extension portion 242, the second inner extension portion 241 is located inside the first concave portion 23, the second outer extension portion 241 The extension portion 242 is located outside the first concave portion 23 ; the first inner extension portion 141 is in at least partial contact with the second inner extension portion 241 , the first outer extension portion 142 is in at least partial contact with the second outer extension portion 242 , and can be Uniform stress. Preferably, the first inner extension portion 141 and the first outer extension portion 142 are respectively perpendicular to the first axial direction A1 and extend horizontally, and the second inner extension portion 241 and the second outer extension portion 242 are respectively perpendicular It extends horizontally in the second axial direction A2, which can effectively disperse the force during assembly and is not easy to radially deform.

Preferably, there is a gap G between the top 132 and the bottom 232 to reserve a deformation space and prevent the top 132 from being radially deformed by positive force. In this embodiment, the first lens 10 is disposed relatively below the second lens 20 ; the first convex portion 13 is an annular shape, and the first concave portion 23 is an annular shape, which can be stably abutted. Of course, in other embodiments of the present invention, the first lens 10a can also be disposed on the opposite side of the second lens 20a. In the second preferred embodiment shown in FIG. 5, the first convex portion 13a and the Compared with the first preferred embodiment, the first concave portion 23a is arranged in the opposite direction, and the same effect can also be achieved; the first convex portion can also include a plurality of convex blocks arranged in an annular shape with an interval from each other to increase the contact points and have better advantages. Assembly stability.

The third preferred embodiment of the present invention is shown in FIG. 6 . Compared with the aforementioned first preferred embodiment, the first inner extension portion 141 and the second inner extension portion 241 are at least partially in contact, and the first outer extension portion 142 is not in contact with the second outer extension portion 242 . The first outer extension portion 142 and the second outer extension portion 242 will not be deformed by pressing each other, and when the first lens 10 or the second lens 20b is radially urged during assembly, the first lens 10 or the second lens 20b There is a space between the outer extension portion 142 and the second outer extension portion 242 to allow moderate deformation. However, in other embodiments of the present invention, the first outer extension part and the second outer extension part may at least partially contact, and the first inner extension part and the second inner extension part do not contact, which can effectively avoid the The surface shapes of the first optically effective area and the second optically effective area are squeezed and deformed by force.

The fourth preferred embodiment of the present invention is shown in FIG. 7 . Compared with the aforementioned first preferred embodiment, at least one of the second inner portion 231a and the second outer portion 233 and the second extending portion 24a is provided with a chamfer 25, which has a guiding effect during assembly. And the assembly stability is good. In this embodiment, the chamfer 25 is disposed between the second inner portion 231a and the second inner extension portion 241a, and the chamfer 25 is an oblique chamfer, which is easy to process. Of course, in other embodiments of the present invention, the chamfer can also be a round chamfer; the chamfer can also be set between the second outer part and the second outer extension; the second inner part and the A chamfer can also be respectively provided between the second outer portion and the second extension portion to facilitate assembly.

The fifth preferred embodiment of the present invention, as shown in FIG. 8 , is a combination of the aforementioned third and fourth preferred embodiments. The first inner extension 141 is at least partially in contact with the second inner extension 241a, the first outer extension 142 is not in contact with the second outer extension 242, and the second inner extension 231a is in contact with the second inner extension The chamfer 25 is provided between 241a. However, in other embodiments of the present invention, the chamfer can also be provided between the second outer portion and the second outer extension; the second inner portion and the second outer portion and the second extension A chamfer can also be respectively provided therebetween; the first outer extension part and the second outer extension part can also be in at least partial contact, and the first inner extension part and the second inner extension part are not in contact.

The sixth preferred embodiment of the present invention is shown in FIG. 9 . Compared with the aforementioned first preferred embodiment, one of the first inner portion 131a and the first outer portion 133 includes a slope inclined to the first axis A1, and the other includes a slope parallel to the first axis A1. A vertical plane of the axis A1, one of the second inner portion 231 and the second outer portion 233 includes a slope inclined to the second axis A2, and the other includes a slope parallel to the second axis A2. a vertical plane. In this embodiment, the first inner portion 131a and the second inner portion 231b respectively include the vertical surface, the first outer portion 133 and the second outer portion 233 respectively include the inclined surface, and the first inner portion The vertical surface of the second inner portion 231b faces the vertical surface of the second inner portion 231b, and the sloped surface of the first outer The positioning effect is good; the first inner extension portion 141 is in contact with the second inner extension portion 241 , and the first outer extension portion 142 is in contact with the second outer extension portion 242 . However, in other embodiments of the present invention, the first inner portion and the second inner portion may respectively include the inclined surface, and the first outer portion and the second outer portion may include the vertical surface, respectively. The same effect is achieved; one of the first inner extension part and the first outer extension part can also be in at least partial contact with the second extension part, and the other is not in contact with the second extension part.

The seventh preferred embodiment of the present invention, as shown in FIG. 10 , is a combination of the aforementioned fourth and sixth preferred embodiments. The chamfer 25a is defined between at least one of the second inner portion 231c and the second outer portion 233 and the second extending portion 24b. In the present embodiment, the chamfer 25a is provided between the second inner portion 231c and the second inner extension portion 241b, and the guiding effect is good. However, in other embodiments of the present invention, the chamfer can also be provided between the second outer portion and the second outer extension; the second inner portion and the second outer portion and the second extension The chamfers can also be respectively provided therebetween.

The eighth preferred embodiment of the present invention is shown in FIG. 11 . Compared with the aforementioned first preferred embodiment, the lens set 1a further includes a third lens 30, and the third lens 30 has a third optical effective area 31 surrounding a third axis A3 and surrounding the third lens 30. A third non-optically effective area 32 outside the optically effective area 31, wherein the third non-optically effective area 32 includes a second concave portion 33 and a third extension portion 34 connected to the second concave portion 33, the second concave portion 33 includes a third inner portion 331, a bottom portion 332 and a third outer portion 333, the bottom portion 332 connects the third inner portion 331 and the third outer portion 333; the second lens 20c further includes a second convex portion 26 and a fourth extending portion 27 connected to the second convex portion 26, the second convex portion 26 and the first concave portion 23 are located on opposite sides of the second lens 20c, the second convex portion 26 includes a first Four inner portions 261 , a top portion 262 and a fourth outer portion 263 . The top portion 262 connects the fourth inner portion 261 and the fourth outer portion 263 ; wherein the third inner portion 331 and the fourth inner portion 261 at least Partial contact, the third outer part 333 and the fourth outer part 263 at least partly contact, the third extension part 34 and the fourth extension part 27 at least partly contact, so that a plurality of lenses can be accurately assembled relative to each other , and the assembly stability is good.

In detail, the third extension portion 34 has a third inner extension portion 341 and a third outer extension portion 342 , the third inner extension portion 341 is located inside the second concave portion 33 , and the third outer extension portion 342 is located in the The outer side of the second concave portion 33; the fourth extension portion 27 has a fourth inner extension portion 271 and a fourth outer extension portion 272, the fourth inner extension portion 271 is located inside the second convex portion 26, the fourth outer extension portion 271 The portion 272 is located outside the second convex portion 26 ; the third inner extension portion 341 is at least partially in contact with the fourth inner extension portion 271 , and the third outer extension portion 342 is at least partially in contact with the fourth outer extension portion 272 . Of course, in other embodiments of the present invention, the third inner extension part may at least partially contact the fourth inner extension part, and the third outer extension part and the fourth outer extension part do not contact; The three outer extensions are at least partially in contact with the fourth outer extension, and the third inner extension is not in contact with the fourth inner extension.

The ninth preferred embodiment of the present invention is shown in FIG. 12 . Compared with the aforementioned eighth preferred embodiment, the third non-optically effective area 32 a includes a second convex portion 35 and a third extending portion 34 a connected to the second convex portion 35 . The second convex portion 35 It includes a third inner portion 351, a top portion 352, and a third outer portion 353. The top portion 352 connects the third inner portion 351 and the third outer portion 353. The second lens 20d further includes a second concave portion 28 and A fourth extending portion 27a is connected to the second concave portion 28. The second concave portion 28 and the first concave portion 23 are located on opposite sides of the second lens 20d. The second concave portion 28 includes a fourth inner portion 281, A bottom 282 and a fourth outer portion 283, the bottom 282 connects the fourth inner portion 281 and the fourth outer portion 283; wherein the third inner portion 351 and the fourth inner portion 281 at least partially contact, the first The third outer portion 353 is at least partially in contact with the fourth outer portion 283, and the third extension portion 34a is at least partially in contact with the fourth extension portion 27a.

In detail, the third extension portion 34a has a third inner extension portion 341a and a third outer extension portion 342a, the third inner extension portion 341a is located inside the second convex portion 35, and the third outer extension portion 342a is located in The outer side of the second convex portion 35; the fourth extension portion 27a has a fourth inner extension portion 271a and a fourth outer extension portion 272a, the fourth inner extension portion 271a is located inside the second concave portion 28, the fourth outer extension portion 271a The extension portion 272 a is located outside the second recessed portion 28 . In this embodiment, the third inner extension portion 341a is at least partially in contact with the fourth inner extension portion 271a, and the third outer extension portion 342a is at least partially in contact with the fourth outer extension portion 272a. Of course, in other embodiments of the present application, the third inner extension part may at least partially contact the fourth inner extension part, and the third outer extension part and the fourth outer extension part do not contact; The outer extension is at least partially in contact with the fourth outer extension, and the third inner extension is not in contact with the fourth inner extension.

The tenth preferred embodiment of the present invention is shown in FIG. 13 . Compared with the aforementioned eighth preferred embodiment, the first lens 10b further includes a second convex portion 15 and a fourth extending portion 16 connected to the second convex portion 15 . The second convex portion 15 is connected to the second convex portion 15 . The first convex portion 13 is located on two opposite sides of the first lens 10 , the second convex portion 15 includes a fourth inner portion 151 , a top portion 152 and a fourth outer portion 153 , and the top portion 152 is connected to the fourth inner portion 151 and the fourth outer portion 153; wherein the third inner portion 331 is at least partially in contact with the fourth inner portion 151, the third outer portion 333 is at least partially in contact with the fourth outer portion 153, and the third extension 34 is in at least partial contact with the fourth extension 16 . The configuration and contact relationship of the third extending portion 34 and the fourth extending portion 16 are the same as those of the third extending portion 34 and the fourth extending portion 27 in the aforementioned eighth preferred embodiment, and will not be repeated here.

With reference to FIG. 3, the present invention further provides a lens module 2, comprising: a lens group 1, 1a as described above; a lens barrel base 3, accommodating the lens group 1, 1a and including an object side O and An image side I relative to the object side O; and an image sensing element 4 located on the image side I. The image sensing element 4 can be disposed between the lens barrel base 3 and a device (such as but not limited to a computer, a mobile phone, etc.) through a connecting seat and located on an imaging surface of the lens module 2 for imaging ; Preferably, a filter can be further included between the image sensing element 4 and the lens group 1 to provide better imaging effects.

1, 1a: Lens group 2: Lens module 3: Tube holder 4: Image Sensing Components 10, 10a, 10b: The first lens 11: The first optical effective area 12: The first non-optically effective area 13, 13a: First convex part 131, 131a: First inner part 132: top 133: First outer part 14: The first extension 141: First inner extension 142: First outer extension 15: Second convex part 151: Fourth inner part 152: top 153: Fourth outer part 16: Fourth extension 20, 20a, 20b, 20c, 20d: second lens 21: The second optical effective area 22: The second non-optically effective area 23, 23a: First recess 231, 231a, 231b, 231c: Second inner part 232: Bottom 233: Second outer part 24, 24a, 24b: Second extension 241, 241a, 241b: Second inner extension 242: Second outer extension 25, 25a: Chamfer 26: Second convex part 261: Fourth inner part 262: top 263: Fourth outer part 27, 27a: Fourth extension 271, 271a: Fourth inner extension 272, 272a: Fourth outer extension 28: Second recess 281: Fourth inner part 282: Bottom 283: Fourth outer part 30: Third lens 31: The third optical effective area 32, 32a: The third non-optically effective area 33: Second recess 331: Third Medial Part 332: Bottom 333: Third outer part 34, 34a: Third extension 341, 341a: Third inner extension 342, 342a: Third outer extension 35: Second convex part 351: Third medial part 352: top 353: Third outer part A1: The first axis A2: The second axis A3: The third axis G: Gap I: Image side O: object side

FIG. 1 is a perspective view of a first preferred embodiment of the present invention. FIG. 2 is an exploded view of the first preferred embodiment of the present invention. 3 is a three-dimensional cross-sectional view of the first preferred embodiment of the present invention. FIG. 4 is a partial enlarged view of FIG. 3 . 5 is a cross-sectional view of a second preferred embodiment of the present invention. 6 is a partial cross-sectional view of the third preferred embodiment of the present invention. 7 is a partial cross-sectional view of a fourth preferred embodiment of the present invention. 8 is a partial cross-sectional view of a fifth preferred embodiment of the present invention. 9 is a partial cross-sectional view of a sixth preferred embodiment of the present invention. 10 is a partial cross-sectional view of the seventh preferred embodiment of the present invention. 11 is a cross-sectional view of an eighth preferred embodiment of the present invention. 12 is a cross-sectional view of a ninth preferred embodiment of the present invention. 13 is a cross-sectional view of the tenth preferred embodiment of the present invention.

1: Lens group

2: Lens module

3: Tube holder

4: Image Sensing Components

11: The first optical effective area

12: The first non-optically effective area

13: The first convex part

21: The second optical effective area

22: The second non-optically effective area

23: The first recess

24: Second extension

A1: The first axis

A2: The second axis

I: Image side

O: object side

Claims (18)

A lens set comprising: A first lens having a first optically effective area surrounding a first axis and a first non-optically effective area surrounding the outer side of the first optically effective area, wherein the first non-optically effective area includes a first convex part and a first extension part connected with the first protruding part, the first protruding part includes a first inner part, a top part and a first outer part, the top part connects the first inner part and the first outer part part; and a second lens having a second optically effective area surrounding a second axis and a second non-optically effective area surrounding the outer side of the second optically effective area, wherein the second non-optically effective area includes a first concave portion and a second extending portion connected to the first recessed portion, the first recessed portion comprising a second inner portion, a bottom portion and a second outer portion, the bottom portion connecting the second inner portion and the second outer portion; Wherein, the first inner portion is at least partially in contact with the second inner portion, the first outer portion is at least partially in contact with the second outer portion, and the first extension portion is at least partially in contact with the second extension portion. The lens set according to claim 1, wherein the first extension portion has a first inner extension portion and a first outer extension portion, the first inner extension portion is located inside the first convex portion, and the first outer extension portion The second extension part has a second inner extension part and a second outer extension part, the second inner extension part is located inside the first concave part, and the second outer extension part is located in the outside of the first recess; the first inner extension is in at least partial contact with the second inner extension, and the first outer extension is in at least partial contact with the second outer extension. The lens set according to claim 1, wherein the first extension portion has a first inner extension portion and a first outer extension portion, the first inner extension portion is located inside the first convex portion, and the first outer extension portion The second extension part has a second inner extension part and a second outer extension part, the second inner extension part is located inside the first concave part, and the second outer extension part is located in the Outside the first recess; the first inner extension part is at least partially in contact with the second inner extension part or the first outer extension part is at least partially in contact with the second outer extension part. The lens set of claim 1, wherein there is a gap between the top and the bottom. The lens set of claim 1, wherein the first convex portion is an annular shape. The lens set of claim 1, wherein the first concave portion is an annular shape. The lens set according to claim 2 or 3, wherein the first inner portion and the first outer portion respectively comprise an inclined surface inclined to the first axial direction, and the second inner portion and the second outer portion respectively comprise an inclined plane inclined to the second axial direction. The lens set according to claim 2 or 3, wherein one of the first inner portion and the first outer portion includes a slope inclined to the first axis, and the other includes a slope parallel to the first axis One of the second inner portion and the second outer portion includes a slope inclined to the second axial direction, and the other includes a vertical plane parallel to the second axial direction. The lens set of claim 7, wherein at least one of the second inner portion and the second outer portion and the second extension portion is provided with a chamfer. The lens set according to claim 8, wherein at least one of the second inner portion and the second outer portion and the second extension portion is provided with a chamfer. The lens set according to claim 1, further comprising a third lens, the third lens has a third optically effective area surrounding a third axis and a third non-optical area surrounding the outside of the third optically effective area an effective area, wherein the third non-optically effective area includes a second concave portion and a third extension portion connected to the second concave portion, the second concave portion includes a third inner side portion, a bottom portion and a third outer side portion, The bottom connects the third inner part and the third outer part; the second lens further includes a second convex part and a fourth extension part connected with the second convex part, the second convex part is connected to the first The concave portion is located on two opposite sides of the second lens, the second convex portion includes a fourth inner portion, a top portion and a fourth outer portion, and the top portion connects the fourth inner portion and the fourth outer portion; wherein, the The third inner portion is at least partially in contact with the fourth inner portion, the third outer portion is at least partially in contact with the fourth outer portion, and the third extension portion is at least partially in contact with the fourth extension. The lens set according to claim 1, further comprising a third lens, the third lens has a third optically effective area surrounding a third axis and a third non-optically effective area surrounding the outside of the third optically effective area area, wherein the third non-optically effective area includes a second convex portion and a third extension portion connected to the second convex portion, the second convex portion includes a third inner side portion, a top portion and a third outer side the top part is connected to the third inner part and the third outer part; the second lens further includes a second concave part and a fourth extension part connected to the second concave part, the second concave part and the first concave part Located on two opposite sides of the second lens, the second concave portion includes a fourth inner portion, a bottom portion and a fourth outer portion, and the bottom portion connects the fourth inner portion and the fourth outer portion; wherein the third The inner portion is at least partially in contact with the fourth inner portion, the third outer portion is at least partially in contact with the fourth outer portion, and the third extension portion is at least partially in contact with the fourth extension. The lens set according to claim 1, further comprising a third lens, the third lens has a third optically effective area surrounding a third axis and a third non-optical area surrounding the outside of the third optically effective area an effective area, wherein the third non-optically effective area includes a second concave portion and a third extension portion connected to the second concave portion, the second concave portion includes a third inner side portion, a bottom portion and a third outer side portion, The bottom connects the third inner part and the third outer part; the first lens further includes a second convex part and a fourth extension part connected with the second convex part, the second convex part and the first The convex portion is located on two opposite sides of the first lens, the second convex portion includes a fourth inner portion, a top portion and a fourth outer portion, and the top portion connects the fourth inner portion and the fourth outer portion; wherein, The third inner portion is at least partially in contact with the fourth inner portion, the third outer portion is at least partially in contact with the fourth outer portion, and the third extension portion is at least partially in contact with the fourth extension. The lens set according to claim 11 or 13, wherein the third extension portion has a third inner extension portion and a third outer extension portion, the third inner extension portion is located inside the second concave portion, and the third outer extension portion The extension part is located outside the second concave part; the fourth extension part has a fourth inner extension part and a fourth outer extension part, the fourth inner extension part is located inside the second convex part, and the fourth outer extension part is located in The outside of the second convex portion; the third inner extension portion is in at least partial contact with the fourth inner extension portion, and the third outer extension portion is at least partially in contact with the fourth outer extension portion. The lens set according to claim 11 or 13, wherein the third extension portion has a third inner extension portion and a third outer extension portion, the third inner extension portion is located inside the second concave portion, and the third outer extension portion The extension part is located outside the second concave part; the fourth extension part has a fourth inner extension part and a fourth outer extension part, the fourth inner extension part is located inside the second convex part, and the fourth outer extension part is located in The outside of the second convex portion; the third inner extension portion is in at least partial contact with the fourth inner extension portion or the third outer extension portion is at least partially in contact with the fourth outer extension portion. The lens set of claim 12, wherein the third extension portion has a third inner extension portion and a third outer extension portion, the third inner extension portion is located inside the second convex portion, and the third outer extension portion The fourth extension part has a fourth inner extension part and a fourth outer extension part, the fourth inner extension part is located inside the second concave part, and the fourth outer extension part is located in the Outside the second recess; the third inner extension is in at least partial contact with the fourth inner extension, and the third outer extension is at least partly in contact with the fourth outer extension. The lens set of claim 12, wherein the third extension portion has a third inner extension portion and a third outer extension portion, the third inner extension portion is located inside the second convex portion, and the third outer extension portion The fourth extension part has a fourth inner extension part and a fourth outer extension part, the fourth inner extension part is located inside the second concave part, and the fourth outer extension part is located in the The outside of the second recess; the third inner extension part is in at least partial contact with the fourth inner extension part or the third outer extension part is in at least partial contact with the fourth outer extension part. A lens module, comprising: A lens set as claimed in any one of claims 1 to 6, 11 to 13, 16 and 17; a lens barrel holder for accommodating the lens group and including an object side and an image side opposite to the object side; and An image sensing element is located on the image side.

Images