CN211577534U

CN211577534U - Optical imaging lens

Info

Publication number: CN211577534U
Application number: CN202020491850.7U
Authority: CN
Inventors: 陈莉; 方荣波; 李龙; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-09-25
Anticipated expiration: 2030-04-07

Abstract

The utility model provides an optical imaging lens. The optical imaging lens includes: the bearing structure is cylindrical; the lens group is detachably arranged in the bearing structure, the optical axis of the lens group extends along the axial direction of the bearing structure, and the lens group comprises at least one lens; the prism group is detachably arranged in the bearing structure and is positioned on one side of the lens group, and the prism group is vertical to the optical axis so as to change the light path of incident light or emergent light of the lens group. The utility model provides an optical lens have the problem that is difficult to the miniaturization among the prior art.

Description

Optical imaging lens

Technical Field

The utility model relates to a cell-phone camera lens imaging device technical field particularly, relates to an optical imaging camera lens.

Background

With the increasing requirements of people on the use of mobile phones, the function of taking pictures of the mobile phones is gradually improved, so that the zoom range of the mobile phones needs to be improved, and with the updating and upgrading of the mobile phones, the mobile phones are thinner and thinner, and the market of the mobile phones urgently needs an optical lens which can meet the requirements of zooming in a certain range and can be applied to a gradually thinner mobile phone module. The existing optical lens is difficult to miniaturize due to the limitation of an optical system and a production process.

That is, the optical lens in the related art has a problem that it is difficult to miniaturize.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an optical imaging lens, which solves the problem of miniaturization of the optical lens in the prior art.

In order to achieve the above object, the present invention provides an optical imaging lens, including: the bearing structure is cylindrical; the lens group is detachably arranged in the bearing structure, the optical axis of the lens group extends along the axial direction of the bearing structure, and the lens group comprises at least one lens; the prism group is detachably arranged in the bearing structure and is positioned on one side of the lens group, and the prism group is vertical to the optical axis so as to change the light path of incident light or emergent light of the lens group.

Further, the prism group includes at least two prisms, and the plurality of prisms are stacked in a direction perpendicular to the optical axis.

Further, the prism is an N prism, and N is 3 or more.

Further, the lens group includes a telephoto lens group.

Further, the lens group includes a zoom lens group.

Further, two adjacent prisms in the prism group are connected through glue.

Further, the bearing structure comprises a lens barrel and a prism barrel, wherein the inner diameter of the prism barrel is larger than that of the lens group, the lens group is arranged in the lens barrel, and the prism group is arranged in the prism barrel.

Further, the lens barrel and the prism barrel are integrally formed; or the lens barrel and the prism barrel are detachably connected.

Further, when the lens barrel and the prism barrel are detachably connected, the lens barrel and the prism barrel are connected through threads; or the lens barrel is connected with the prism barrel through a buckle; or the lens barrel and the prism barrel are connected by glue.

Furthermore, the prism group is located on the image side surface of the lens group, and emergent light rays of the lens group firstly pass through the prism group and then are emitted to the imaging surface.

By applying the technical scheme of the utility model, the optical imaging lens comprises a bearing structure, a lens group and a prism group, wherein the bearing structure is in a cylindrical shape; the lens group is detachably arranged in the bearing structure, the optical axis of the lens group extends along the axial direction of the bearing structure, and the lens group comprises at least one lens; the prism group is detachably arranged in the bearing structure and is positioned on one side of the lens group, and the prism group is vertical to the optical axis so as to change the light path of incident light or emergent light of the lens group.

The lens group is arranged in the optical imaging lens, so that the optical imaging lens can perform optical imaging and realize the function of shooting. The prism group is arranged in the optical imaging lens, so that the light path of incident light or emergent light of the lens group can be changed, the light path length of the incident light or the emergent light of the lens group is shortened, the whole optical imaging lens is more miniaturized, and the optical imaging lens can be arranged in a small space. Bearing structure's setting provides the position of placing for lens group and prism group for the light path between lens group and the prism group can not receive external environment interference, guarantees the stability of lens group formation of image.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an overall schematic view of an optical imaging lens according to a first embodiment of the present invention; and

fig. 2 is a diagram showing a positional relationship of lenses in a lens group in the optical imaging lens in fig. 1;

fig. 3 is a diagram showing a state in which a lens group in the optical imaging lens of fig. 1 is a telephoto lens group;

fig. 4 is a schematic view of an overall structure of an optical imaging lens according to a second embodiment of the present invention;

fig. 5 is a schematic view of the overall structure of an optical imaging lens according to a third embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a load bearing structure; 11. a lens barrel; 12. a prismatic lens barrel; 20. a lens group; 21. a first lens; 22. a second lens; 23. a third lens; 30. a prism group; 31. a first prism; 32. a second prism; 40. an image plane.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that optical lens exists and is difficult to miniaturize among the prior art, the utility model provides an optical imaging lens.

As shown in fig. 1 to 5, the optical imaging lens includes a bearing structure 10, a lens group 20 and a prism group 30, wherein the bearing structure 10 is cylindrical; the lens group 20 is detachably mounted in the bearing structure 10 and an optical axis of the lens group 20 extends along an axial direction of the bearing structure 10, and the lens group 20 includes at least one lens; the prism group 30 is detachably installed in the bearing structure 10, and the prism group 30 is located at one side of the lens group 20, and the prism group 30 is disposed perpendicular to the optical axis to change the optical path of incident light or emergent light of the lens group 20.

By providing the lens group 20 in the optical imaging lens, the optical imaging lens can perform optical imaging, and a function of image pickup is realized. The prism group 30 is arranged in the optical imaging lens, so that the light path of incident light or emergent light of the lens group 20 can be changed, the light path length of the incident light or the emergent light of the lens group 20 is shortened, the whole optical imaging lens is more miniaturized, and the optical imaging lens can be installed in a small space. The arrangement of the bearing structure 10 provides a placement position for the lens group 20 and the prism group 30, so that the light path between the lens group 20 and the prism group 30 is not interfered by the external environment, and the stability of imaging of the lens group 20 is ensured.

The optical path length is shortened by arranging the prism group 30 in the optical imaging lens, and then the mechanical length of the whole optical imaging lens can be shortened, so that the optical imaging lens is more miniaturized, and the optical imaging lens can be conveniently installed in a thinner mobile phone.

As shown in fig. 1 to 5, the prism group 30 includes at least two prisms, and a plurality of prisms are stacked in a direction perpendicular to the optical axis. The prism can change the light propagation path and further change the length of the light path, so that the distance between the lens group 20 and the imaging surface 40 can be shortened, the length of the optical imaging lens is further shortened, and the optical imaging lens is further miniaturized.

Note that the side of the prism is placed toward the direction in which the lens group 20 is placed, so that light can propagate in the prism. It is only necessary to ensure that the image finally formed by the lens assembly 20 and the prism assembly 30 is a vertical real image.

Optionally, the prism is an N prism, and N is 3 or more. The prism may be a triangular prism, a pentaprism, but may also be other prisms such as an isosceles prism.

Optionally, lens group 20 comprises a tele lens group. Because the focal length of the telephoto lens group is very long, the distance between the imaging surface 40 and the telephoto lens group is very long, and the telephoto lens group is not easily applied to mobile terminal devices such as mobile phones. Combining the telephoto lens group with the prism group 30 can shorten the distance between the telephoto lens group and the imaging surface 40, thereby contributing to the miniaturization of the optical imaging lens.

Optionally, the lens group 20 comprises a zoom lens group. Because the zoom lens group needs to change the distance between the zoom lens group and the imaging surface 40, and further change the focal length, and take pictures with different requirements, but because mobile terminals such as mobile phones are small, the zoom range of the zoom lens group on the mobile terminals is small. By combining the zoom lens group and the prism group 30, the zoom range of the zoom lens group can be increased, which is further beneficial to the miniaturization of the optical imaging lens.

The lens group 20 may include only a telephoto lens group or only a zoom lens group, or may include both a telephoto lens group and a zoom lens group.

The zoom lens group is a lens group including a plurality of lenses and capable of achieving a zoom function, or the zoom lens group is capable of achieving a multiple zoom function.

Optionally, two adjacent prisms in the prism group 30 are connected by glue. Connect through glue between two adjacent prisms to avoid the condition that the prism drops to take place, increased prism job stabilization nature.

As shown in fig. 1 to 5, the carrying structure 10 includes a lens barrel 11 and a prism barrel 12, an inner diameter of the prism barrel 12 is larger than an inner diameter of the lens group 20, the lens group 20 is installed in the lens barrel 11, and the prism group 30 is installed in the prism barrel 12. The prism assembly 30 is in contact with the inner wall of the prism barrel 12, so that the incident light must pass through the prism assembly 30 and enter the lens assembly 20, or the emergent light must pass through the prism assembly 30 and emit to the image plane 40, so as to change the optical path length.

Alternatively, the lens barrel 11 and the prism barrel 12 are integrally formed; this arrangement facilitates the manufacture of the load bearing structure 10, and the load bearing structure 10 is more stable and reliable.

Alternatively, the lens barrel 11 is detachably connected to the prism barrel 12. This arrangement facilitates the mounting of the lens group 20 and the prism group 30 into the lens barrel 11 and the prism barrel 12, respectively.

As shown in fig. 1 to 5, the prism assembly 30 is located on the image side surface of the lens assembly 20, and the emergent light of the lens assembly 20 passes through the prism assembly 30 and then emits to the image plane 40. The prism group 30 is arranged on the image side surface of the lens group 20, so that the prism group 30 changes the light path of emergent light, emergent light is transmitted to the imaging surface 40 after being imaged by the prism group 30, the distance between the imaging surface 40 and the lens group 20 can be reduced, the length of the whole optical imaging lens is shortened, the optical imaging lens is small and exquisite, and the optical imaging lens can be conveniently installed on a portable mobile terminal, such as a mobile phone, a tablet, a computer and the like.

Example one

Optionally, the prism group 30 and the prism barrel 12 are fixedly connected by glue.

In the present embodiment, the lens barrel 11 and the prism barrel 12 are connected by glue. Because the optical imaging lens is arranged on the portable mobile terminal, the lens barrel 11 and the prism barrel 12 are small and exquisite, and the lens barrel 11 and the prism barrel 12 are connected through glue, other structures do not need to be arranged on the lens barrel 11 and the prism barrel 12, and the manufacturing of the lens barrel 11 and the prism barrel 12 is convenient.

In the specific embodiment shown in fig. 2, the lens barrel 11 and the prism barrel 12 are fixedly connected by glue, the lens group 20 includes a first lens 21, a second lens 22 and a third lens 23 which are sequentially arranged at intervals along the axial direction of the lens barrel 11, and the prism group 30 includes a first prism 31 and a second prism 32 which are sequentially arranged along the radial direction of the prism barrel 12. The light beam sequentially enters the prism group 30 through the first lens 21, the second lens 22 and the third lens 23, the prism group 30 changes the direction of the light beam and finally emits to the imaging surface 40 for imaging, and the length of the optical imaging lens is shortened. In this embodiment, the lens group 20 can realize zooming of 5 times or more.

It should be noted that the above zooming refers to how many times the current focal length is the equivalent focal length, and is mainly realized by the lens group 20, and the prism group 30 plays a role of changing the optical path.

Example two

The difference from the first embodiment is that the lens barrel 11 and the prism barrel 12 are connected in a different manner.

As shown in fig. 4, when the lens barrel 11 and the prism barrel 12 are detachably connected, the lens barrel 11 and the prism barrel 12 are screwed. The lens barrel 11 has an external thread, the prism barrel 12 has an internal thread matching the external thread, the lens barrel 11 is screwed into the prism barrel 12, the installation between the lens barrel 11 and the prism barrel 12 is completed, the screw connection is tighter than the glue connection, but the difficulty of forming the threads on the lens barrel 11 and the prism barrel 12 is increased due to the miniaturization of the structures of the lens barrel 11 and the prism barrel 12 themselves.

In the specific embodiment shown in fig. 4, the lens group 20 includes a first lens 21, a second lens 22 and a third lens 23 which are sequentially spaced along the axial direction of the lens barrel 11, and the prism group 30 includes a first prism 31 and a second prism 32 which are sequentially arranged along the radial direction of the prism barrel 12. The light beam sequentially enters the prism group 30 through the first lens 21, the second lens 22 and the third lens 23, the prism group 30 changes the direction of the light beam and finally emits to the imaging surface 40 for imaging, and the length of the optical imaging lens is shortened. In this embodiment, the lens group 20 can realize zooming of 5 times or more.

EXAMPLE III

In the present embodiment, the lens barrel 11 and the prism barrel 12 are connected by snap-fitting. A part of the lens barrel 11 extends into the prism barrel 12, and the lens barrel 11 has a first fastening structure, and the prism barrel 12 has a second fastening structure cooperating with the first fastening structure.

In the specific embodiment shown in fig. 5, the lens group 20 includes a first lens 21, a second lens 22 and a third lens 23 which are sequentially spaced along the axial direction of the lens barrel 11, and the prism group 30 includes a first prism 31 and a second prism 32 which are sequentially arranged along the radial direction of the prism barrel 12. The light beam sequentially enters the prism group 30 through the first lens 21, the second lens 22 and the third lens 23, the prism group 30 changes the direction of the light beam and finally emits to the imaging surface 40 for imaging, and the length of the optical imaging lens is shortened. In this embodiment, the lens group 20 can realize zooming of 5 times or more.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical imaging lens, comprising:

a load-bearing structure (10), said load-bearing structure (10) being cylindrical;

a lens group (20), the lens group (20) being detachably mounted within the carrying structure (10) and an optical axis of the lens group (20) extending in an axial direction of the carrying structure (10), the lens group (20) comprising at least one lens;

prism group (30), prism group (30) detachably installs in bearing structure (10), just prism group (30) are located one side of lens group (20), prism group (30) perpendicular to the optical axis sets up, in order to change the light path of the incident light or the emergent light of lens group (20).

2. Optical imaging lens according to claim 1, characterized in that said prism group (30) comprises at least two prisms, and a plurality of said prisms are stacked in a direction perpendicular to said optical axis.

3. The optical imaging lens according to claim 2, wherein the prism is an N prism, and N is equal to or greater than 3.

4. Optical imaging lens according to claim 2, characterized in that the lens group (20) comprises a tele lens group.

5. Optical imaging lens according to claim 2, characterized in that the lens group (20) comprises a zoom lens group.

6. Optical imaging lens according to claim 2, characterized in that adjacent two prisms of said prism group (30) are connected by glue.

7. Optical imaging lens according to claim 1, characterized in that the carrying structure (10) comprises a lens barrel (11) and a prism barrel (12), the inner diameter of the prism barrel (12) being larger than the inner diameter of the lens group (20), the lens group (20) being mounted in the lens barrel (11), the prism group (30) being mounted in the prism barrel (12).

8. The optical imaging lens according to claim 7,

the lens barrel (11) and the prism barrel (12) are integrally formed; or

The lens barrel (11) is detachably connected with the prism barrel (12).

9. Optical imaging lens according to claim 8, characterized in that when the lens barrel (11) and the prism barrel (12) are detachably connected,

the lens barrel (11) is connected with the prism barrel (12) through threads; or

The lens barrel (11) is connected with the prism barrel (12) through a buckle; or

The lens barrel (11) is connected with the prism barrel (12) through glue.

10. Optical imaging lens according to any one of claims 1 to 9, characterized in that the prism group (30) is located on the image side surface of the lens group (20), and the emergent light rays of the lens group (20) pass through the prism group (30) and then are emitted to the imaging surface (40).