CN216718783U

CN216718783U - Lens module

Info

Publication number: CN216718783U
Application number: CN202123415829.2U
Authority: CN
Inventors: 吴峰; 郭楠; 李超群
Original assignee: Dongguan Yutong Optical Technology Co Ltd
Current assignee: Dongguan Yutong Optical Technology Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-10
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the technical field of optical lenses and discloses a lens module. The main lens frame assembly comprises a main lens frame body, and first lenses and lens groups which are arranged in the main lens frame body and are arranged at intervals along the axial direction of the main lens frame body; the adjusting mirror frame assembly is arranged in the main mirror frame assembly and comprises an adjusting mirror frame body and adjusting lenses, the adjusting mirror frame body comprises an adjusting plane and at least three adjusting claws arranged on the circumferential direction of the adjusting plane, the adjusting plane is arranged between the first lens and the lens group, the adjusting lenses are arranged on the adjusting plane, and the at least three adjusting claws are configured to be capable of adjusting the positions of the adjusting lenses relative to the lens group. The adjustable mirror frame assembly has the advantages of simple structure, easy processing and convenient adjustment, effectively ensures that the adjusted lens module can meet the design tolerance, and has better imaging quality and qualified rate.

Description

Lens module

Technical Field

The utility model relates to the technical field of optical lenses, in particular to a lens module.

Background

With the increasing development of social security systems, the updating speed of security products is also gradually increased, wherein the design requirements of optical lenses are more strict. The common high-definition image quality lens is gradually replaced by a high-image quality lens with a large light transmission aperture.

The requirement of a lens optical system with a large light transmission caliber is high, and the assembly tolerance such as lens interval, eccentricity, inclination and the like is sensitive, so that the general processing capability cannot meet the design requirement, and the problems of poor quality of a finished lens, low qualification rate, high cost and the like are caused. Therefore, it is urgent to design the lens structure to adjust the internal structure of the lens to meet the requirement of high quality optical system.

Therefore, a lens module is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on the above, the present invention provides a lens module with good quality, easy processing and high yield.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a lens module, comprising:

the main lens frame assembly comprises a main lens frame body, and first lenses and lens groups which are arranged in the main lens frame body and are arranged at intervals along the axial direction of the main lens frame body;

the adjusting mirror frame assembly is arranged in the main mirror frame assembly and comprises an adjusting mirror frame body and adjusting lenses, the adjusting mirror frame body comprises an adjusting plane and at least three adjusting claws arranged in the circumferential direction of the adjusting plane, the adjusting plane is arranged between the first lens and the lens group, the adjusting lenses are arranged on the adjusting plane, and the adjusting claws are configured to be capable of adjusting the positions of the adjusting lenses relative to the lens group.

As a preferable mode of the lens module, an adjusting groove is provided on an outer side of the main frame body, and the adjusting claw is at least partially disposed in the adjusting groove.

As a preferred scheme of the lens module, one end of the adjusting claw, which is far away from the adjusting plane, is provided with an adjusting end, and the adjusting end is arranged in the adjusting groove in a way of protruding outwards along the radial direction of the adjusting lens.

As a preferable aspect of the lens module, an adjustment gap is provided between an outer wall of the adjustment claw and an inner wall of the main mirror housing.

As a preferred scheme of the lens module, a first mounting groove is formed between the adjacent adjusting claws, a first mounting protrusion is arranged on the inner wall of the main mirror frame body, and the first mounting protrusion can be arranged in the first mounting groove.

As a preferable scheme of the lens module, the adjusting lens is connected with the adjusting claw through curing glue.

As a preferable scheme of the lens module, a glue accommodating groove is arranged between the adjusting claw and the adjusting lens.

As a preferred scheme of the lens module, a first mounting step is arranged on an inner side wall of the main lens frame body, the first lens is arranged on the first mounting step, and the first lens and the adjusting lens are arranged in a gap.

As a preferable scheme of the lens module, one end of the main lens frame body, which is far away from the first lens, is provided with a second mounting step, and the lens group is arranged on the second mounting step;

and a third mounting step is arranged between the first mounting step and the second mounting step, and the adjusting mirror frame assembly is arranged on the third mounting step.

As a preferable mode of the lens module, the outer periphery of the main lens frame body is provided with an adjustment positioning groove extending along the radial direction thereof.

The utility model has the beneficial effects that:

the adjusting lens frame assembly is arranged in the main lens frame assembly, the adjusting lens frame assembly comprises an adjusting plane arranged between the first lens and the lens group, the adjusting lens is arranged on the adjusting plane, at least three adjusting claws arranged on the circumferential direction of the adjusting plane are used for adjusting the position of the adjusting lens relative to the adjusting plane, so that the position of the adjusting lens relative to the lens group is adjusted, and the optimal imaging state of the adjusting lens group is realized by adjusting the position of the adjusting lens relative to the lens group; the adjustable lens frame assembly is simple in structure, easy to machine and convenient to adjust, the lens module after adjustment can meet the design tolerance effectively, and meanwhile, the adjustable lens frame assembly has good imaging quality and qualified rate.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described 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 according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic view of a lens module according to an embodiment of the utility model;

fig. 2 is a schematic view of a main lens frame of a lens module according to an embodiment of the utility model;

FIG. 3 is a schematic view of an adjusting frame of a lens module according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a lens module according to an embodiment of the utility model.

In the figure:

1. a main frame assembly; 11. a main mirror frame body; 111. an adjustment groove; 112. a first mounting boss; 113. a first mounting step; 114. a second mounting step; 115. a third mounting step; 116. adjusting a positioning groove; 117. a female connector; 12. a first lens; 13. a lens group;

2. adjusting the frame assembly; 21. adjusting the mirror frame body; 211. adjusting the plane; 212. an adjusting claw; 2121. an adjustment end; 2122. adjusting the clearance; 2123. a first mounting groove; 2124. a glue containing groove; 22. and adjusting the lens.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present embodiment provides a lens module, which includes a main frame assembly 1 and an adjustable frame assembly 2, wherein the main frame assembly 1 includes a main frame 11, and a first lens 12 and a lens group 13 disposed in the main frame 11 and spaced along an axial direction of the main frame 11; the adjusting lens frame assembly 2 is disposed in the main lens frame assembly 1, and includes an adjusting lens frame body 21 and an adjusting lens 22, the adjusting lens frame body 21 includes an adjusting plane 211 and at least three adjusting claws 212 disposed in a circumferential direction of the adjusting plane 211, the adjusting plane 211 is disposed between the first lens 12 and the lens group 13, the adjusting lens 22 is disposed on the adjusting plane 211, and the at least three adjusting claws 212 are configured to be able to adjust a position of the adjusting lens 22 with respect to the lens group 13.

The adjusting lens frame assembly 2 is arranged in the main lens frame assembly 1, wherein the adjusting lens frame assembly 2 comprises an adjusting plane 211 arranged between the first lens 12 and the lens group 13, the adjusting lens 22 is arranged on the adjusting plane 211, at least three adjusting claws 212 arranged on the circumference of the adjusting plane 211 are used for adjusting the position of the adjusting lens 22 relative to the adjusting plane 211 so as to adjust the position of the adjusting lens 22 relative to the lens group 13, and the optimal imaging state of the adjusting lens group 13 is realized by adjusting the position of the adjusting lens 22 relative to the lens group 13; the adjustable mirror frame component 2 is simple in structure, easy to process and convenient to adjust, the lens module after adjustment can meet the design tolerance effectively, and meanwhile, the adjustable mirror frame component has good imaging quality and qualified rate.

It should be noted that at least three adjusting claws 212 can adjust the decentering position, the tilt angle, and the relative position along the optical axis of the lens group 13 of the adjusting lens 22, thereby achieving the best imaging state of the adjusting lens group 13. The following description will be given taking the example of providing three adjustment claws 212.

Specifically, in order to realize that the adjusting mirror frame unit 2 can be placed in the main mirror frame unit 1, a first mounting groove 2123 is provided between the adjacent adjusting claws 212, the inner wall of the main mirror frame body 11 is provided with a first mounting protrusion 112, and when the adjusting mirror frame body 21 is placed in the main mirror frame body 11, the first mounting protrusion 112 is placed in the first mounting groove 2123. By providing the first mounting protrusion 112 and the first mounting groove 2123, positioning and guiding for adjusting the mounting of the frame assembly 2 are provided.

Further, in order to connect the adjusting lens 22 and the adjusting claw 212, a glue accommodating groove 2124 is provided between the adjusting claw 212 and the adjusting lens 22. The glue containing groove 2124 is used for containing bonding glue for bonding the adjusting lens 22 and the adjusting claw 212.

In this embodiment, the adjusting lens 22 is connected to the adjusting claw 212 through the curing glue, the liquid curing glue is injected into the glue accommodating groove 2124, the position of the adjusting lens 22 is adjusted, the liquid curing glue is cured after the adjustment is completed, and the adjusting lens 22 is connected to the adjusting claw 212 at the adjusted position.

As an alternative to the lens module, in order to facilitate the adjustment of the adjustment lens frame assembly 2 placed on the main lens frame body 11 by an operator, the outer side of the main lens frame body 11 is provided with an adjustment groove 111, an adjustment claw 212 is at least partially placed in the adjustment groove 111, and the operator adjusts the adjustment lens 22 by operating a portion where the adjustment claw 212 is placed in the adjustment groove 111.

In this embodiment, an adjusting end 2121 is disposed at an end of the adjusting claw 212 far from the adjusting plane 211, the adjusting end 2121 is disposed in the adjusting groove 111 and protrudes outward along a radial direction of the adjusting lens 22, and an operator can press the adjusting end 2121 through the adjusting groove 111 by placing the operating end in the adjusting groove 111, so as to adjust the adjusting lens 22. Optionally, the adjusting ends 2121 of the three adjusting claws 212 are arranged concentrically with the main frame body 11 and have the same diameter as the outer side of the main frame body 11, so as to ensure that the outer side of the main frame body 11 is a complete circumferential surface, thereby improving the overall aesthetic property of the lens module.

Specifically, to avoid interference between the adjustment claw 212 and the inner wall of the main mirror housing 11 during adjustment of the adjustment claw 212, an adjustment gap 2122 is provided between the outer wall of the adjustment claw 212 and the inner wall of the main mirror housing 11. Illustratively, the adjustment gap 2122 is greater than 0.05 mm. In addition, the adjustment gap 2122 can avoid interference between the adjustment claw 212 and the inner wall of the main mirror housing 11, and can facilitate injection of liquid curing adhesive into the adhesive storage groove 2124.

Further, in order to avoid interference between the adjustment lens 22 and the first lens 12 during adjustment of the adjustment claw 212, a first mounting step 113 is provided on an inner side wall of the main frame body 11, and the first lens 12 is disposed on the first mounting step 113 to ensure that the first lens 12 and the adjustment lens 22 are disposed at a gap, which may be 0.25mm as an example. Wherein the gap is also set to ensure that no interference occurs between the conditioning lens 22 and the first lens 12 during conditioning.

In the present embodiment, in order to position the lens group 13 and the adjustment frame assembly 2 in the axial direction in the main frame body 11, a second mounting step 114 is provided at an end of the main frame body 11 away from the first lens 12, and the lens group 13 is placed on the second mounting step 114. The lens assembly 13 includes a plurality of optical lenses, each of the optical lenses is sequentially assembled into the main lens frame 11 according to the requirement of the optical system and abuts against the second mounting step 114, the second mounting step 114 is used for bearing each of the optical lenses of the lens assembly 13, and one of the optical lenses in the lens assembly 13 away from the second mounting step 114 is circumferentially fixed to the main lens frame 11 by dispensing. A third mounting step 115 is provided between the first mounting step 113 and the second mounting step 114, and the adjustment lens frame assembly 2 is placed on the third mounting step 115.

Optionally, the periphery of the main lens frame body 11 is provided with an adjusting positioning groove 116 extending along the radial direction thereof, and the adjusting positioning groove 116 is used for positioning the direction of the lens module, so that when the lens module is adjusted, the lens group 13, the adjusting lens frame assembly 2 and the first lens 12 are always at the same angle relative to the main lens frame body 11 during the taking and placing processes, thereby making the adjusting process more accurate and efficient. Illustratively, the adjustment positioning grooves 116 are provided in three, and the three adjustment positioning grooves 116 are provided at regular intervals along the outer periphery of the main mirror frame body 11.

Further, one end of the main mirror frame body 11, which is far away from the adjusting mirror frame assembly 2, is further provided with a female connector 117, the female connector 117 may be a threaded structure, a CS connector or a non-standard connector, the female connector 117 is convenient for installing a lens module, the lens module may be installed on a security product, a camera, a video camera or an optical detector through the female connector 117, and correspondingly, a male connector matched with the adjusting positioning groove 116 may also be installed at the position where the lens module is connected.

The assembly and adjustment process of the lens module is as follows: placing the lens group 13 on the second mounting step 114, and fixing by dispensing; the adjustment lens 22 is placed on the adjustment plane 211, and the adjustment spectacle frame assembly 2 is placed on the first mounting step 113; placing the first lens 12 on the first mounting step 113; injecting liquid curing glue into the glue containing groove 2124 and the first mounting step 113; the position of the adjusting lens 22 is adjusted by pressing the adjusting end 2121 to adjust to the optimal imaging state of the lens group 13; the liquid curing paste is cured by the UV curing device to fix the adjustment lens 22 and the first lens 12.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A lens module, comprising:

the main mirror frame assembly (1) comprises a main mirror frame body (11), and a first lens (12) and a lens group (13) which are arranged in the main mirror frame body (11) and are arranged at intervals along the axial direction of the main mirror frame body (11);

adjusting frame subassembly (2), set up in main frame subassembly (1), including adjusting frame body (21) and adjusting lens (22), adjusting frame body (21) including adjust plane (211) and set up in adjust plane (211) circumference at least three regulation claw (212), adjust plane (211) and arrange in first lens (12) with between lens group (13), adjusting lens (22) are arranged in adjust plane (211) is last, at least three adjusting claw (212) are configured as and can be adjusted adjusting lens (22) for the position of lens group (13).

2. The lens module according to claim 1, wherein an adjustment groove (111) is provided on an outer side of the main lens frame body (11), and the adjustment claw (212) is at least partially placed in the adjustment groove (111).

3. The lens module according to claim 2, wherein an end of the adjusting claw (212) away from the adjusting plane (211) is provided with an adjusting end (2121), and the adjusting end (2121) is outwardly convexly provided in the adjusting groove (111) in a radial direction of the adjusting lens (22).

4. The lens module according to claim 1, wherein an adjustment gap (2122) is provided between an outer wall of the adjustment claw (212) and an inner wall of the main lens frame body (11).

5. The lens module as claimed in claim 1, wherein a first mounting groove (2123) is provided between adjacent adjusting claws (212), and a first mounting protrusion (112) is provided on an inner wall of the main frame body (11), the first mounting protrusion (112) being capable of being seated in the first mounting groove (2123).

6. A lens module according to claim 1, characterized in that the adjusting lens (22) and the adjusting claw (212) are connected by means of cured glue.

7. The lens module as claimed in claim 6, wherein a glue receiving groove (2124) is provided between the adjusting claw (212) and the adjusting lens (22).

8. The lens module as claimed in claim 1, wherein a first mounting step (113) is disposed on an inner sidewall of the main lens frame (11), the first lens (12) is disposed on the first mounting step (113), and the first lens (12) is disposed at a gap from the adjusting lens (22).

9. The lens module according to claim 8, wherein an end of the main frame body (11) away from the first lens (12) is provided with a second mounting step (114), and the lens group (13) is disposed on the second mounting step (114);

a third mounting step (115) is arranged between the first mounting step (113) and the second mounting step (114), and the adjusting mirror frame assembly (2) is arranged on the third mounting step (115).

10. The lens module according to claim 1, wherein the outer periphery of the main lens frame body (11) is provided with an adjustment positioning groove (116) extending in the radial direction thereof.