WO2023168860A1

WO2023168860A1 - Lens fixing device and lens module

Info

Publication number: WO2023168860A1
Application number: PCT/CN2022/101610
Authority: WO
Inventors: 陈虹棋
Original assignee: 歌尔光学科技有限公司
Priority date: 2022-03-10
Filing date: 2022-06-27
Publication date: 2023-09-14
Also published as: CN114624842A

Abstract

Provided is a lens fixing device (1) and a lens module. The lens fixing device (1) comprises a connecting portion (11) and an elastic portion (12); the lens fixing device (1) is of an annular structure; the connecting portion (11) and the elastic portion (12) are stacked and connected together; the elastic portion (12) comprises a body portion (121) and an elastic arm (122); the elastic arm (122) is provided on the side of the body portion (121) farthest from the connecting portion (11); a first end (1221) of the elastic arm (122) is fixedly connected to the body portion (121); a second end (1222) of the elastic arm (122) extends in the circumferential direction of the lens fixing device (1); and gap portions (123 and 124) are formed between the elastic arm (122) and the body portion (121).

Description

A lens fixing device and lens module

Technical field

The present application relates to the technical field of optical equipment, and more specifically, the present application relates to a lens fixing device and a lens module.

Background technique

In recent years, with the development of camera technology and the rise of electronic products with photography functions, optical camera modules have been widely used in various products.

Common methods for fixing lenses include glue dispensing, hot melting or pressure ring fixation. For example, the lens is fixed in the lens barrel through glue dispensing, making the lens module difficult to repair and less reliable. Or when the lenses are put into the lens barrel, the lens barrel is partially softened and then coated in the middle so that the lens is fixed to the lens barrel, making the lens module difficult to repair. Or when the lens is fixed by a pressure ring, the lens module may generate high temperatures during use. Due to the different thermal collision coefficients of the lens and the pressure ring, the connection between the lens and the pressure ring is no longer reliable.

In order to solve any of the above technical problems, this application provides a new type of lens fixing device.

Contents of the invention

One purpose of this application is to provide a new technical solution for a lens fixing device and lens module.

According to a first aspect of embodiments of the present application, a lens fixing device is provided. The lens fixing device includes a connecting part and an elastic part;

The lens fixing device has an annular structure, and the connecting part and the elastic part are stacked and connected together;

The connecting part is used to connect with the inner wall of the lens barrel;

The elastic part is used to contact the lens. The elastic part includes a body part and an elastic arm. The elastic arm is arranged on the side of the body part away from the connecting part. The first end of the elastic arm is connected to the elastic arm. The body part is fixedly connected; the second end of the elastic arm extends along the circumferential direction of the lens fixing device, and a gap is formed between the elastic arm and the body part.

Optionally, a plurality of the elastic arms are evenly arranged around the central axis of the lens fixing device.

Optionally, the body part has a first surface, the first surface and the elastic arm are arranged oppositely in the axial direction of the elastic part, and a first gap part is formed between the elastic arm and the first surface. .

Optionally, the first gap portion has a width dimension along an axial direction of the elastic portion, and the width dimension gradually increases along an extension direction from the first end to the second end of the elastic arm.

Optionally, the body part has a second surface, the second surface and the elastic arm are arranged opposite to each other in the circumferential direction of the elastic part, and a second gap part is formed between the elastic arm and the second surface. .

Optionally, threads are formed on the outer peripheral surface of the connecting portion, and the connecting portion is used for threaded connection with the lens barrel.

Optionally, a groove is formed on the surface of the connecting part away from the elastic part.

Optionally, the lens fixing device is a metal component or a plastic component.

Optionally, the elastic part and the connecting part are integrally formed.

According to a second aspect of the embodiment of the present application, a lens module is provided. The temple module includes a lens and a lens fixing device as described in the first aspect, and the lens is in contact with the elastic portion of the lens fixing device.

In the embodiment of the present application, a lens fixing device is provided. The lens fixing device includes a connecting part and an elastic part. The lens of the embodiment of the present application is installed in the lens barrel through a lens fixing device, which has the characteristics of strong reliability and easy repair. In the embodiment of the present application, an elastic arm is provided on the elastic part of the lens fixing device, that is, the lens will contact the elastic arm. When the connection between the lens and the lens fixing device is not reliable, the elastic arm can release the elastic force so that the lens can The contact connection with the elastic part is maintained to avoid unreliable lens fixation.

Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings.

Description of the drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are part of the drawings of this application. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a lens fixing device in an embodiment of the present application.

Figure 2 shows a schematic structural diagram of the lens installed on the lens fixing device.

Figure 3 shows a schematic structural diagram of the lens module.

Explanation of reference symbols:

1. Lens fixing device; 10. Through hole; 11. Connection part; 111. Groove; 12. Elastic part; 121. Body part; 122. Elastic arm; 1221. First end; 1222. Second end; 123. The first slit part; 124. The second slit part; 2. Lens; 3. Lens barrel.

Detailed ways

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the present application unless otherwise specifically stated.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application or its application or uses.

Techniques and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques and equipment should be considered a part of the specification.

In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values.

It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.

This application provides a lens fixing device 1. Referring to Figures 1 and 2, the lens fixing device 1 includes a connecting part 11 and an elastic part 12 connected to the connecting part 11. The lens fixing device 1 has an annular structure. In a specific embodiment, the lens fixing device 1 is provided with a through hole 10 , and the through hole 10 penetrates the connecting portion 11 and the elastic portion 12 . In use, the lens 2 is fixed on the lens fixing device, and the through hole 10 corresponds to the optical part of the lens 2 . For example, the lens fixing device 1 has an annular structure to facilitate the passage of light.

In this embodiment, the connecting portion 11 and the elastic portion 12 are stacked and connected together. For example, the connecting part 11 has a first surface opposite to the elastic part 12, and the elastic part 12 has a second surface opposite to the connecting part 11. The first surface and the second surface are attached and connected, so that the connecting part 11 and the elastic part 12 connected together. In a specific embodiment, the connecting part 11 and the elastic part 12 may be connected by hot melting, welding, bonding, or buckling. This embodiment does not limit the connection method between the connecting part 11 and the elastic part 12 . The material of the connecting part 11 and the elastic part 12 may be the same or different. The connecting part 11 may be made of plastic or metal. The elastic part 12 can be replaced by an O-ring or a spring washer.

In specific use, the connecting portion 11 is used to connect with the inner wall of the lens barrel 3 . The connecting portion 11 is connected to the inner wall of the lens barrel 3 so that the lens fixing device 1 is installed on the lens barrel 3 . For example, the connecting portion 11 and the lens barrel 3 can be connected by a snap connection, an adhesive connection, a magnetic connection, or a screw connection. This embodiment does not limit the connection method between the connecting part 11 and the lens barrel 3 .

In specific use, the elastic part 12 is used to contact the lens 2 . In this embodiment, the elastic part 12 includes a body part 121 and an elastic arm 122. The elastic arm 122 is disposed on a side of the body part 121 away from the connecting part 11. The first end 1221 of the elastic arm 122 is connected to the first end 1221 of the elastic arm 122. The main body part 121 is fixedly connected; the second end 1222 of the elastic arm 122 extends along the circumferential direction of the lens fixing device 1, and a gap is formed between the elastic arm 122 and the main body part 121.

Specifically, the first end 1221 of the elastic arm 122 is fixed on the body part 121, the second end 1222 of the elastic arm 122 is a free end (that is, the second end 1222 of the elastic arm 122 does not form a connection relationship with any component), and the second end 1222 of the elastic arm 122 is not connected to any component. The two ends 1222 extend along the circumferential direction of the lens fixing device 1 , that is, the elastic arm 122 is an arc-shaped elastic arm 122 .

In a specific embodiment, the first end 1221 of the elastic arm 122 may be welded to the body part 121 or the elastic arm 122 and the body part 121 may be integrally formed. For example, in one embodiment, the elastic arm 122 is welded to the body part 121 as an independent component. A recess is formed on the body part 121, and the recess is used to accommodate the elastic arm 122. The first end 1221 of the elastic arm 122 is welded to the elastic part 12, and the second end 1222 of the elastic arm 122 is located in the recess.

For example, in another embodiment, the elastic arms 122 are not used as independent components, but multiple elastic arms 122 are cut out on the elastic portion 12 by cutting.

In this embodiment, the elastic arm 122 is disposed on the body part 121, and a gap is formed between the elastic arm 122 and the body part 121, where the gap serves as an adjustment space after the elastic arm 122 is deformed. For example, the lens 2 is installed on the lens barrel 3 through the lens fixing device 1, the outer peripheral surface of the lens 2 is in contact with the lens barrel 3, and the end surface of the lens 2 close to the elastic part 12 is in contact with the elastic part 12, and at the same time, pressure is continuously applied to the lens 2 On the top, the end surface of the lens 2 contacts the elastic part 12, causing the elastic arm 122 to deform. Due to the existence of this gap part, the elastic arm 122 can deform and be completely flattened (that is, the elastic arm 122 is pressed so that the elastic arm 122 The gap between the elastic part 121 and the main body part 121 becomes smaller or there is no gap part), which increases the contact force between the elastic part 12 and the lens 2, and improves the reliability of the lens 2 being installed on the lens barrel 3.

In one embodiment, as shown in FIG. 1 , a plurality of elastic arms 122 are evenly arranged around the central axis of the lens fixing device 1 .

Specifically, the lens 2 is installed on the lens barrel 3 through the lens fixing device 1, the outer peripheral surface of the lens 2 is in contact with the lens barrel 3, and the end surface of the lens 2 close to the elastic part 12 is in contact with the elastic part 12, while continuing to apply pressure to the lens barrel 3. On the lens 2, the end surface of the lens 2 will first contact the elastic arm 122. In this embodiment, since multiple elastic arms 122 are provided, the multiple elastic arms 122 can transmit the force to the lens 2 respectively. Specifically, since the plurality of elastic arms 122 are evenly arranged around the central axis of the lens fixing device 1, the force transmitted by the elastic arms 122 to the lens 2 is uniform, and the force endured by the lens 2 is also uniform, thereby avoiding the possibility of The lens 2 bears different forces, which results in poor installation reliability of the lens 2 and poor imaging effect of the lens 2 . Referring to FIG. 1 , three elastic arms 122 are formed on the elastic part 12 , and the three elastic arms 122 are evenly arranged.

In one embodiment, as shown in FIG. 1 , the gap portion includes a first gap portion 123 , the body portion 121 has a first surface, and the first surface and the elastic arm 122 are in the axial direction of the elastic portion 12 The first gap 123 is formed between the elastic arm 122 and the first surface.

In this embodiment, the body part 121 has a first surface, wherein the first surface is opposite to the elastic arm 122 in the axial direction of the elastic part 12 . When the elastic arm 122 is not subject to external pressure, a first gap 123 is formed between the elastic arm 122 and the first surface. When the lens 2 is being installed and the lens 2 is continuously pressed, the lens 2 contacts the elastic arm 122 . Due to the existence of the first gap 123 between the elastic arm 122 and the first surface, the elastic arm 122 faces in a direction away from the lens 2 By moving and deforming, the elastic arm 122 is gradually flattened, so that the surface of the elastic arm 122 close to the first surface is in contact with the first surface.

In addition, when the lens 2 is installed on the lens barrel 3 through the lens fixing device 1, the connection between the lens 2 and the lens fixing device 1 may not be so reliable under high temperature conditions (due to the inconsistent thermal expansion coefficients of the lens 2 and the lens fixing device 1, the lens 2 may become loose when in contact with the lens fixing device 1), in this case, the elastic arm 122 can deform and release the elastic force (at this time, the elastic arm 122 is not in complete contact with the first surface), so that the lens 2 can remain in contact with the first surface. The contact of the elastic part 12.

In one embodiment, as shown in FIG. 1 , the first gap portion 123 has a width dimension along the axial direction of the elastic portion 12 and along the extending direction of the first end 1221 to the second end 1222 of the elastic arm 122 . , the width dimension gradually increases.

In this embodiment, the width dimension of the first slit portion 123 is limited, in which the width dimension is smaller closer to the first end 1221 of the first slit portion 123 and closer to the second end 1222 of the first slit portion 123 . The larger the width, that is, one end of the elastic arm 122 is fixedly connected to the body part 121, and the second end 1222 of the elastic arm 122 extends along the circumferential direction of the lens fixing device 1 and is disposed obliquely upward. Such arrangement of the elastic arm 122 enables the elastic arm 122 to have a better elastic effect.

In one embodiment, as shown in FIG. 1 , the gap portion includes a second gap portion 124 , the body portion 121 has a second surface, and the second surface and the elastic arm 122 are in the circumferential direction of the elastic portion 12 Arranged oppositely in the direction, a second gap portion 124 is formed between the elastic arm 122 and the second surface.

In this embodiment, since the elastic arm 122 needs to move and deform in the axial direction of the elastic portion 12 , the second end 1222 of the elastic arm 122 needs to be set as a free end. When the elastic arm 122 moves and deforms along the axial direction of the elastic part 12, in order to avoid interference with the main body part 121, between the end surface of the second end 1222 of the elastic arm 122 and the third end of the elastic part 12 A second gap portion 124 is formed between the two surfaces. When the elastic arm 122 is not subjected to external pressure, a wider second gap portion 124 is formed between the end surface of the second end 1222 of the elastic arm 122 and the second surface. When the lens 2 is being installed and the lens 2 is continuously pressed, the lens 2 contacts the elastic arm 122. Since the elastic arm 122 is subjected to an external force, a formation is formed between the end surface of the second end 1222 of the elastic arm 122 and the second surface. A second gap portion 124 with a narrower width is formed.

In one embodiment, as shown in FIGS. 1 and 2 , threads are formed on the outer peripheral surface of the connecting portion 11 , and the connecting portion 11 is used for threaded connection with the lens barrel 3 .

In this embodiment, multiple turns of threads are formed on the outer wall of the connecting part 11, and correspondingly, multiple turns of threads are also formed on the inner wall of the lens barrel 3. The connecting part 11 and the lens barrel 3 are connected through threads, so that the lens The fixing device 1 is installed on the lens barrel 3 .

In one embodiment, a groove 111 is formed on the surface of the connecting portion 11 away from the elastic portion 12 .

In this embodiment, one groove 111 or multiple grooves 111 are formed on the surface of the connecting portion 11 away from the elastic portion 12 . When the lens 2 is accommodated in the lens barrel 3 and the lens fixing device 1 is in contact with the lens 2, a certain adjustment tool can be inserted into the groove 111 of the lens fixing device 1 to rotate and adjust the lens fixing device 1 so that the lens The fixing device 1 can be well connected with the inner wall of the lens barrel 3 .

In one embodiment, the lens fixing device 1 is a metal component or a plastic component.

In this embodiment, the material of the lens fixing device 1 is limited, and the lens fixing device 1 can be made of metal or plastic, which prolongs the service life of the lens fixing device 1 .

In one embodiment, the elastic part 12 and the connecting part 11 are integrally formed.

In this embodiment, the elastic part 12 and the connecting part 11 are integrally formed. For example, the elastic part 12 and the connecting part 11 are made of the same material. The elastic part 12 and the connecting part 11 are both made of metal, and the lens fixing device 1 can be formed by stamping. Alternatively, the elastic part 12 and the connecting part 11 can be made of plastic, and injection molding can be used. The lens fixing device 1 is formed in this way.

According to the second aspect of the embodiment of the present application, as shown in FIG. 3 , a lens module is provided. The lens module includes a lens 2 and a lens fixing device as described in the first aspect. The lens 2 is in contact with the elastic part 12 of the lens fixing device 1 . Specifically, the lens 2 is in contact with the elastic portion 12 of the lens fixing device 1 . In this embodiment, the lens fixing device 1 is applied to the lens module to facilitate repair of the internal structure of the lens module.

The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not inconsistent, they can be combined to form a better embodiment. Considering the simplicity of the writing, they will not be discussed here. Repeat.

Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present application. Those skilled in the art will understand that the above embodiments can be modified without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

A lens fixing device, characterized in that the lens fixing device (1) includes a connecting part (11) and an elastic part (12);

The lens fixing device (1) has an annular structure; the connecting part (11) and the elastic part (12) are stacked and connected together;

The elastic part (12) includes a body part (121) and an elastic arm (122). The elastic arm (122) is provided on a side of the body part (121) away from the connecting part (11). The first end (1221) of the elastic arm (122) is fixedly connected to the body part (121); the second end (1222) of the elastic arm (122) extends along the circumferential direction of the lens fixing device (1), so A gap is formed between the elastic arm (122) and the main body (121).
The lens fixing device according to claim 1, characterized in that a plurality of the elastic arms (122) are evenly arranged around the central axis of the lens fixing device (1).
The lens fixing device according to claim 1, wherein the gap portion includes a first gap portion (123), the body portion (121) has a first surface, and the first surface is connected with the elastic arm (123). 122) The elastic portion (12) is arranged oppositely in the axial direction, and the first gap portion (123) is formed between the elastic arm (122) and the first surface.
The lens fixing device according to claim 3, characterized in that the first gap portion (123) has a width dimension along the axial direction of the elastic portion (12), and the first gap portion (123) has a width dimension along the first end of the elastic arm (122). (1221) to the extending direction of the second end (1222), the width dimension gradually increases.
The lens fixing device according to claim 1 or 3, characterized in that the slit portion includes a second slit portion (124), the body portion (121) has a second surface, and the second surface is in contact with the elasticity. The arms (122) are arranged oppositely in the circumferential direction of the elastic portion (12), and the second gap portion (124) is formed between the elastic arm (122) and the second surface.
The lens fixing device according to claim 1, characterized in that threads are formed on the outer peripheral surface of the connecting portion (11), and the connecting portion (11) is used for threaded connection with the lens barrel (3).
The lens fixing device according to claim 1, characterized in that a groove (111) is opened on the surface of the connecting portion (11) away from the elastic portion (12).
The lens fixing device according to claim 1, characterized in that the lens fixing device (1) is a metal part or a plastic part.
The lens fixing device according to claim 1, characterized in that the elastic part (12) and the connecting part (11) are integrally formed.
A lens module, characterized in that it includes a lens (2) and the lens fixing device (1) according to any one of claims 1 to 9, the lens (2) and the lens fixing device (1) The elastic part (12) contacts.