CN210166605U

CN210166605U - Lens module

Info

Publication number: CN210166605U
Application number: CN201921031305.3U
Authority: CN
Inventors: 韦传冬
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-28
Filing date: 2019-07-02
Publication date: 2020-03-20
Anticipated expiration: 2029-07-02
Also published as: WO2020258308A1

Abstract

The utility model relates to a lens module, which comprises a lens cone, a plurality of lenses and a first shading piece, wherein the lens cone is provided with a light hole which is communicated with the inside of the lens cone; the plurality of lenses are sequentially stacked in the lens barrel from the object side to the image side along the axial direction of the lens barrel, the plurality of lenses comprise a first lens closest to the object side, the first lens comprises an optical part and a fixing part extending around the optical part, and part of the optical part passes through the light hole and protrudes out of the lens barrel; the first shading part is arranged around one end of the optical part protruding out of the lens barrel. The lens module can better eliminate stray light, avoid the interference of the stray light on the imaging of other lenses in the lens cone, and greatly improve the integral imaging performance of the lens module.

Description

Lens module

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of electronic technology, especially, relate to a lens module.

[ background of the invention ]

With the continuous development of science and technology, electronic devices such as mobile phones and tablets integrate more and more functions, for example, a lens module is arranged on the mobile phones and the tablet electronic devices to realize the functions of photographing and shooting.

In order to reduce the overall size of the current lens module, the lens closest to the object side is usually mounted in a manner of partially protruding out of the lens barrel, so that when the lens module with the structure is used for imaging, a large amount of stray light often penetrates through the peripheral wall of one end of the lens protruding out of the lens barrel and is injected into other lenses inside the lens barrel, thereby causing interference on imaging of the other lenses inside the lens barrel, and finally causing poor imaging quality of the lens module.

[ Utility model ] content

Accordingly, there is a need for a lens module that can prevent stray light from interfering with the imaging of the lens inside the lens barrel.

A lens module, comprising:

the lens barrel is provided with a light hole, and the light hole is communicated with the inside of the lens barrel;

the lens comprises a plurality of lenses, a lens barrel and a lens barrel, wherein the lenses are sequentially stacked in the lens barrel from an object side to an image side along the axial direction of the lens barrel, the lenses comprise a first lens closest to the object side, the first lens comprises an optical part and a fixing part extending around the optical part, and part of the optical part passes through the light hole and protrudes out of the lens barrel; and

the first shading piece is arranged around one end of the optical part protruding out of the lens barrel.

In one embodiment, the object side surface of the optical portion comprises an arc-shaped surface and a side surface which is bent and extends from the arc-shaped surface and surrounds the arc-shaped surface, and the first shading part is arranged to surround the whole side surface.

In one embodiment, the first light shielding member includes a main body portion surrounding the side surface, and a clamping portion extending outward from the main body portion and clamped between the fixing portion of the first lens and the lens barrel.

In one embodiment, a gap exists between the body portion and the side surface.

In one embodiment, a gap exists between the main body part and the hole wall forming the light-transmitting hole.

In one embodiment, the first light shielding member further includes a chamfer disposed at an end of the main body portion away from the clamping portion, and the chamfer is used for pressing and holding an arc-shaped surface of the optical portion to limit the up-and-down movement of the first lens in the lens barrel along the axial direction of the lens barrel.

In one embodiment, the main body portion, the clamping portion and the chamfer are integrally formed.

In one embodiment, the plurality of lenses further includes at least one second lens, the first lens and the at least one second lens are sequentially stacked from an object side to an image side along an axial direction of the lens barrel, and the lens module further includes a second light shielding member, and the second light shielding member is interposed between a fixing portion of the first lens and the adjacent second lens.

In one embodiment, the number of the second lenses is multiple, and the lens module further includes a third light shielding member, and the third light shielding member is sandwiched between any two adjacent second lenses.

In one embodiment, the lens barrel includes a first barrel wall and a second barrel wall extending from the first barrel wall in a bending manner, and the light-transmitting hole is opened in the first barrel wall.

According to the lens module, the first light shading parts are arranged around the end, protruding out of the lens barrel, of the optical part of the first lens, and can reflect and absorb stray light around the end, protruding out of the lens barrel, of the optical part of the first lens, so that the stray light is prevented from penetrating through the peripheral wall, protruding out of the lens barrel, of the optical part of the first lens and being incident on other lenses inside the lens barrel, the stray light can be well eliminated, interference of the stray light on imaging of other lenses inside the lens barrel is avoided, and the integral imaging performance of the lens module is greatly improved.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a lens module according to an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a point a in fig. 1.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1, the lens module 10 in one embodiment includes a lens barrel 100, a plurality of lenses 200, and a first light shielding member 300, wherein the lens barrel 100 has a light hole 110, and the light hole 110 is communicated with the inside of the lens barrel 100. The plurality of lenses 200 are sequentially stacked in the lens barrel 100 from the object side to the image side along the axial direction of the lens barrel 100, the plurality of lenses 200 include a first lens 220 closest to the object side, the first lens 220 includes an optical portion 222 and a fixing portion 224 extending around the optical portion 222, and a part of the optical portion 222 passes through the light hole 110 and protrudes out of the lens barrel 100; the first light shielding member 300 is disposed around one end of the optical portion 222 protruding out of the lens barrel 100, and the first light shielding member 300 is used for reflecting and absorbing stray light around one end of the optical portion 222 protruding out of the lens barrel 100.

In the lens module 10, the first light-shielding member 300 is disposed around the end of the optical portion 222 of the first lens 220 protruding out of the lens barrel 100, and the first light-shielding member 300 can reflect and absorb stray light around the end of the optical portion 222 of the first lens 220 protruding out of the lens barrel 100, so as to prevent the stray light from passing through the peripheral wall of the end of the optical portion 222 of the first lens 220 protruding out of the lens barrel 100 and being incident on other lenses 200 inside the lens barrel 100, thereby better eliminating the stray light, preventing the stray light from interfering with the imaging of other lenses 200 inside the lens barrel 100, and greatly improving the overall imaging performance of the lens module 10.

As shown in fig. 1, the lens barrel 100 includes a first barrel wall 120 and a second barrel wall 130 extending from the first barrel wall 120, and the light hole 110 is opened on the first barrel wall 120. Further, the second cylinder wall 130 includes an inner wall surface 132 facing the inside of the lens barrel 100 and an outer wall surface 134 disposed opposite to the inner wall surface 132, the inner wall surface 132 is provided with a plurality of steps 136 recessed from the inner wall surface 132 to the outer wall surface 134, and the plurality of steps 136 are used for placing a plurality of lenses 200. In order to further prevent the stray light from passing through the light hole 110 and entering the lens 200 in the lens barrel 100, each step 136 is coaxially disposed with the light hole 110, so as to further prevent the stray light from interfering with the imaging of the lens 200 in the lens barrel 100, and improve the overall imaging performance of the lens module 10.

As shown in fig. 1 and 2, the object-side surface of the optical portion 222 includes an arc-shaped surface 226 and a side surface 228 extending from the arc-shaped surface 226 and surrounding the arc-shaped surface 226, and the first light-shielding member 300 is disposed to surround the entire side surface 228. With such an arrangement, the covering range of the first light-shielding member 300 on the side surface 228 can be increased, so as to prevent stray light entering from the light-transmitting hole 110 from entering other lenses 200 inside the lens barrel 100 through the side surface 228, thereby ensuring the overall imaging performance of the lens module 10.

As shown in fig. 2, the first light shielding member 300 further includes a main body portion 320 surrounding the side surface 228, and a clamping portion 340 extending outward from the main body portion 320 and clamped between the fixing portion 224 of the first lens 220 and the lens barrel 110. Specifically, the clamping portion 340 is interposed between the fixing portion 224 of the first lens 220 and the inner sidewall of the first cylinder wall 120.

As shown in fig. 2, further, a gap exists between the body portion 320 and the side surface 228. Further, a gap exists between the body portion 320 and the wall of the hole forming the light-transmitting hole 110.

Further, the first light shielding member 300 further includes a chamfer 360, the chamfer 360 is disposed at an end of the main body portion 320 away from the clamping portion 340, and the chamfer 360 is used for pressing the arc-shaped surface 226 of the optical portion 222 to limit the up-and-down movement of the first lens 220 in the lens barrel 100 along the axial direction of the lens barrel 100. In the present embodiment, the main body 320, the clamping portion 340 and the chamfer 360 together form a hollow cap-shaped structure, and the first light shielding member 300 can be made as thin as possible while effectively shielding stray light. Further, the main body 320, the clamping portion 340 and the chamfer 360 are integrally formed to facilitate the integral processing of the first shade 300.

As shown in fig. 1, the plurality of lenses 200 further includes at least one second lens 240, the first lens 220 and the at least one second lens 240 are sequentially stacked from the object side to the image side along the axial direction of the lens barrel 100, the lens module 10 further includes a second light shielding member 400, the second light shielding member 400 is interposed between the fixing portion 224 of the first lens 220 and the adjacent second lens 240, and the second light shielding member 400 is used for reflecting and absorbing stray light in the lens barrel 100, so as to further improve the overall imaging performance of the lens module 10. It can be understood that the second light shielding member 400 may be configured as a hollow ring structure, and the second light shielding member 400 may be made as thin as possible on the premise of effectively shielding stray light.

Further, the lens module 10 further includes a plurality of second lenses 240, and the third light-shielding member 500 is disposed between any two adjacent second lenses 240, and the third light-shielding member 500 is used for reflecting and absorbing stray light in the lens barrel 100, so as to further improve the overall imaging performance of the lens module 10. It can be understood that the third light-shielding member 500 may be configured as a hollow ring structure, the number and the position of the third light-shielding members 500 may be determined according to the needs of actual situations, and the third light-shielding member 500 may be made as light and thin as possible on the premise of effectively shielding the stray light.

Further, by changing the thickness of the third light-shielding member 500, the distance between any two adjacent second lenses 240 is adjustable along the axial direction of the lens barrel 100, so as to meet the actual use requirements of the lens module 10 under different optical environment conditions.

The above are only embodiments of the present invention, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A lens module, comprising:

2. The lens module as recited in claim 1, wherein the object side surface of the optical portion includes an arc surface and a side surface extending from the arc surface and surrounding the arc surface, and the first light shielding member is disposed to surround the entire side surface.

3. The lens module as claimed in claim 2, wherein the first light shielding member includes a main body portion surrounding the side surface and a clamping portion extending outward from the main body portion and clamped between the fixing portion of the first lens and the lens barrel.

4. The lens module as claimed in claim 3, wherein a gap exists between the main body and the side surface.

5. The lens module as claimed in claim 3, wherein a gap exists between the main body and a wall of the hole forming the light-transmitting hole.

6. The lens module as claimed in claim 3, wherein the first light shielding member further includes a chamfer disposed at an end of the main body portion away from the clamping portion, the chamfer being configured to press against the arc-shaped surface of the optical portion to limit the up-and-down movement of the first lens in the axial direction of the lens barrel.

7. The lens module as claimed in claim 6, wherein the main body, the clamping portion and the chamfer are integrally formed.

8. The lens module as claimed in claim 1, wherein the plurality of lenses further includes at least one second lens, the first lens and the at least one second lens are sequentially stacked from an object side to an image side along an axial direction of the lens barrel, and the lens module further includes a second light shielding member interposed between a fixing portion of the first lens and the adjacent second lens.

9. The lens module as claimed in claim 8, wherein the number of the second lenses is plural, and the lens module further includes a third light shielding member interposed between any two adjacent second lenses.

10. The lens module as claimed in claim 1, wherein the barrel includes a first barrel wall and a second barrel wall bent and extended from the first barrel wall, and the light hole is formed on the first barrel wall.