CN211180368U

CN211180368U - Lens module

Info

Publication number: CN211180368U
Application number: CN201922190812.8U
Authority: CN
Inventors: 许凌云
Original assignee: Ruisheng Communication Technology Changzhou Co Ltd
Current assignee: Chengrui Optics Changzhou Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-04
Anticipated expiration: 2029-12-09

Abstract

The utility model provides a lens module, including the lens barrel who has accommodating space with accept in lens group in the accommodating space. The lens group comprises a first lens positioned on the object side, wherein the first lens comprises an optical part for imaging and a bearing part arranged around the optical part. Wherein, the optical part at least partially protrudes out of the accommodating space. The bearing part comprises a top surface close to the object side, the optical part comprises an object side surface close to the object side and a side surface connecting the object side surface and the top surface, and the side surface and the top surface form a step structure to be abutted with the lens barrel. The lens module further comprises a shading sheet attached to the side surface. The utility model provides a lens module's super little head structure can satisfy user's demand, avoids using simultaneously scribbling black technology, and reduce cost improves the production yield.

Description

Lens module

[ technical field ] A method for producing a semiconductor device

The utility model relates to an optical imaging technical field especially relates to a lens module.

[ background of the invention ]

In recent years, along with the continuous development of science and technology, electronic devices are continuously developing towards intellectualization, and besides digital cameras, portable electronic devices such as tablet computers, mobile phones and the like are also provided with lens modules with photographing and shooting functions, and vehicles such as automobiles and the like are also provided with lens modules with photographing and shooting functions, so that the requirements of users for photographing at any time are met.

A lens module of the related art includes a lens barrel having a light-passing hole and a lens assembly accommodated in the lens barrel. In order to make the lens barrel capable of sufficiently supporting and fixing the lens group and the requirement of the molding thickness of the plastic lens barrel, the sidewall of the lens barrel is usually required to have a certain thickness. The aperture of the light-transmitting hole close to the object side is larger, the spherical aberration is larger, and the difficulty and the cost of correction are higher. If a lens with a relatively small aperture is made into a lens with a large aperture by the same process and structure, the imaging quality of the lens is inferior to that of the lens with a small aperture. Sometimes, in order to meet the volume requirement of the electronic device, the lens module needs to be made into an ultra-small head structure, and the compression lens structure of the related art cannot be made into the ultra-small head structure, so that the structural limitation is large.

Therefore, there is a need for an improved lens module to solve the above problems.

[ Utility model ] content

The lens module compression lens structure of the prior art can not achieve an ultra-small head structure, and has large structural limitation. Therefore the utility model provides an improved lens module.

A lens module comprises a lens barrel with an accommodating space and a lens group accommodated in the accommodating space, wherein the lens group comprises a first lens positioned at the object side, the first lens comprises an optical part for imaging and a bearing part surrounding the optical part, at least part of the optical part protrudes out of the accommodating space, the bearing part comprises a top surface close to the object side, the optical part comprises an object side surface close to the object side and a side surface connecting the object side surface and the top surface, the side surface and the top surface form a step structure to be abutted against the lens barrel, and the lens module further comprises a light shading sheet attached to the side surface.

Preferably, the light shielding sheet is in a hollow truncated cone shape.

Preferably, the object side surface is an arc surface, the side surface is an inclined surface, and the side surface extends from the top surface to a direction close to the optical axis in an inclined manner.

Preferably, the arc surface is outwardly convex toward the side close to the object.

Preferably, an outer diameter of the lens barrel at an end close to the object side is smaller than an outer diameter of the lens barrel at an end close to the image side.

Preferably, the lens barrel includes an inner surface close to an optical axis, an outer surface disposed opposite to the inner surface, and a bottom surface facing an image side and connecting the inner surface and the outer surface, wherein:

the inner surface is of a stepped structure matched with the lens group;

the outer surface includes from the bottom surface is along the perpendicular plane that extends of optical axis direction, from the perpendicular face is close to optical axis direction horizontal extension's horizontal plane and from the horizontal plane is towards the thing side and is close to the inclined plane that the optical axis direction extends.

Compared with the prior art, the utility model provides a lens module is through setting up first lens optical part at least part protrusion in accommodating space's the outside, simultaneously the side surface certainly the top surface extends to being close to the slope of optical axis direction, the inclined plane of a lens section of thick bamboo certainly the horizontal plane extends towards the thing side and is close to the optical axis direction, forms the lens module of little head structure, satisfies partial user's demand, avoids using the inking technology simultaneously, and reduce cost improves the production yield. The lens module further comprises a light shading sheet attached to the side surface, so that the problem of lens halo of the lens module 100 is effectively reduced.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic cross-sectional view of a lens module according to the present invention;

FIG. 2 is an exploded view of the lens module shown in FIG. 1;

fig. 3 is an enlarged view of the area a of the lens module shown in fig. 1.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 to 3, fig. 1 is a schematic cross-sectional view of a lens module 100 according to the present invention, fig. 2 is an exploded cross-sectional view of the lens module shown in fig. 1, and fig. 3 is an enlarged view of a region a of the lens module shown in fig. 1. The lens module 100 includes a lens barrel 10 having a receiving space 17, a lens set 30 received in the receiving space 17, a light-shielding sheet 50, a pressing ring 70 and a light-shielding member 90.

The outer diameter of the lens barrel 10 near the object side is smaller than that near the image side. The object side refers to a side of the lens barrel 10 close to an object in use, and the image side refers to a side opposite to the object side. The lens barrel 10 includes an inner surface 11 close to the optical axis, an outer surface 13 disposed opposite to the inner surface 11, and a bottom surface 15 facing the image side and connecting the inner surface 11 and the outer surface 13, wherein the inner surface 11 encloses the accommodating space 17 for accommodating the lens group 30. Preferably, the inner surface 11 is a stepped structure assembled with the lens group 30, and the periphery of the lens group 30 abuts against the inner surface 11 of the stepped structure to fix the lens. The outer surface 13 includes a vertical surface 131 vertically extending from the bottom surface 15 in the optical axis direction, a horizontal surface 133 horizontally extending from the vertical surface 131 in the optical axis direction, and a slope 135 extending from the horizontal surface 133 toward the object side and in the optical axis direction.

The lens group 30 includes a plurality of lens elements, and specifically, in the present embodiment, the lens group 30 includes five lens elements in total, including a first lens element 31, and a second lens element 33, a third lens element 35, a fourth lens element 37 and a fifth lens element 39 disposed on the image side of the first lens element 31. The five lenses are closely arranged in the accommodating space 17 in order from the object side to the image side and in a coaxial configuration, and form the lens group 30. The lens module 100 can display more detailed images by using a multi-lens arrangement. The first lens 31 includes an optical portion 311 for imaging and a bearing portion 313 provided around the optical portion. The bearing part 313 includes a top surface 3131 close to the object side, the optical part 311 includes an object side surface 3111 close to the object side and a side surface 3113 connecting the object side surface 3111 and the top surface 3131, and the side surface 3113 and the top surface 3131 form a step structure to abut against the lens barrel 10. The object side surface 3111 is a curved surface, and more specifically, the curved surface is outwardly convex toward the object side. The side surface 3113 is an inclined surface and the side surface 3113 extends obliquely from the top surface 3131 toward the optical axis. In addition, the optical portion 311 at least partially protrudes from the accommodating space 17, so that the lens module 100 forms a super-small head structure to meet the requirements of some users.

The lens module 100 further includes a light shielding sheet 50 attached to the optical portion 311, and the light shielding sheet 50 is a hollow circular truncated cone-shaped structure. Specifically, the light shielding sheet 50 is attached to the side surface 3113. Due to the arrangement of the light-shielding sheet 50, the optical portion 311 at least partially protruding from the outer side of the accommodating space 17 can avoid the interference of stray light, thereby effectively reducing the problem of lens halo of the lens module 100 and improving the imaging quality.

The pressing ring 70 abuts against the lens group 30 at the end, close to the image side, of the lens barrel 10, specifically abuts against the bottom of the fifth lens 39, so that the lens group 30 is fixed, and further, the pressing ring 70 fixes the lens group 30 in the lens barrel 10 in a dispensing manner.

The light-shielding member 90 is a hollow annular structure, the light-shielding member 90 is attached to the lens group 30, the light-shielding members 90 are multiple, and each light-shielding member 90 is clamped between two adjacent lenses. The light shielding member 90 includes light shielding sheets 91 and a light shielding plate 93, specifically, in this embodiment, the light shielding member 90 includes three light shielding sheets 91 and one light shielding plate 93, the light shielding sheets 91 are respectively disposed on the object sides of the second lens 33, the third lens 35 and the fourth lens 37, and the light shielding plate 93 is disposed between the fourth lens 37 and the fifth lens 39. The light shielding member 90 is used for shielding stray light, and improving the imaging quality of the lens module 100.

Compared with the prior art, the utility model provides a lens module 100 is through setting up first lens 31 optical part 311 at least part protrusion in accommodating space 15's the outside, simultaneously side surface 3113 certainly top surface 3131 extends to being close to the slope of optical axis direction, lens barrel 10's inclined plane 135 certainly horizontal plane 133 just extends towards the thing side and is close to the optical axis direction, forms lens module 100 of ultra-small head structure, satisfies some user demands, avoids using the inking technology simultaneously, and reduce cost improves the production yield. The lens module 100 further includes a light shielding sheet 50 attached to the side surface 3113, so as to effectively reduce the problem of lens halo of the lens module 100.

The above embodiments of the present invention are only described, 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 comprises a lens barrel with an accommodating space and a lens group accommodated in the accommodating space, wherein the lens group comprises a first lens positioned at the object side, the first lens is characterized by comprising an optical part for imaging and a bearing part surrounding the optical part, at least part of the optical part protrudes out of the accommodating space, the bearing part comprises a top surface close to the object side, the optical part comprises an object side surface close to the object side and a side surface connecting the object side surface and the top surface, the side surface and the top surface form a step structure to be abutted against the lens barrel, and the lens module further comprises a shading sheet attached to the side surface.

2. The lens module as claimed in claim 1, wherein the light-shielding sheet is in the shape of a hollow truncated cone.

3. The lens module as claimed in claim 1, wherein the object side surface is an arc surface, the side surface is an inclined surface, and the side surface extends obliquely from the top surface toward a direction close to the optical axis.

4. The lens module as recited in claim 3, wherein the curved surface is outwardly convex toward the object-near side.

5. The lens module as claimed in claim 1, wherein an outer diameter of the lens barrel at an end thereof closer to the object side is smaller than an outer diameter of the lens barrel at an end thereof closer to the image side.

6. The lens module according to claim 5, wherein the lens barrel includes an inner surface close to an optical axis, an outer surface disposed opposite to the inner surface, and a bottom surface facing an image side and connecting the inner surface and the outer surface, wherein:

the inner surface is of a stepped structure matched with the lens group;