CN212255857U - Lens module and electronic equipment - Google Patents

Abstract

The present disclosure relates to a lens module and an electronic device, the lens module includes: the lens comprises a transparent cover plate, a lens and a light guide assembly, wherein the lens is arranged on one side of the transparent cover plate, external light can enter the lens through the transparent cover plate and form an image on an image surface of the lens, the optical magnification RED of the lens module is not less than 0.5, and the conjugate distance of the lens module is not less than a preset threshold value. The camera lens module can realize macro photography, can be arranged inside the electronic equipment, and solves the problem that the operation is complex when the camera lens module is used for aligning the lens of the external camera lens and the electronic equipment in the related technology.

Description

Lens module and electronic equipment

Technical Field

The present disclosure relates to the technical field of electronic devices, and particularly, to a lens module and an electronic device.

Background

With the development and progress of the technology, people have higher and higher requirements on the shooting function of the electronic equipment. For example, it is desirable that electronic devices such as mobile phones can take macro shots. At present, in order to enable electronic equipment to realize macro photography, a camera of the electronic equipment is usually externally connected with a lens, and the macro photography is realized through the externally connected lens. The external lens realizes that macro is shot and needs to set up solitary external lens, and external lens and electronic equipment separation lead to external lens and electronic equipment's camera lens counterpoint difficulty, and then make the operation complicated when shooing.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to provide a lens module and an electronic device, so as to overcome the problem of complicated operation during photographing due to the difficulty in aligning an external lens and a lens of the electronic device during macro photographing at least to a certain extent.

According to an aspect of the present disclosure, there is provided a lens module including:

a transparent cover plate;

the lens is arranged on one side of the transparent cover plate, external light can enter the lens through the transparent cover plate, and the light penetrating through the lens forms an image on an image surface of the lens;

the optical magnification RED of the lens module is more than or equal to 0.5, and the conjugate distance of the lens module is more than or equal to a preset threshold value.

According to another aspect of the present disclosure, an electronic device is provided, which includes the lens module.

The lens module provided by the embodiment of the disclosure images on an image plane after light reflected by an object to be shot enters a lens through the transparent cover plate, the optical magnification ratio of the lens module is greater than or equal to 0.5, and the conjugate distance of the lens module is greater than or equal to a preset threshold value, macro-shooting can be realized, the lens module can be arranged inside electronic equipment, and the problem that the operation is complex due to the fact that the lens of the external lens and the electronic equipment is difficult to align when macro-shooting in the related technology is solved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

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

fig. 2 is a schematic view of a lens provided in an exemplary embodiment of the present disclosure;

fig. 3a is a chromatic aberration diagram of a lens according to an exemplary embodiment of the present disclosure;

fig. 3b is a field curvature diagram of a lens provided in an exemplary embodiment of the present disclosure;

fig. 3c is a distortion diagram of a lens provided in an exemplary embodiment of the present disclosure;

fig. 4 is a schematic diagram of an electronic device according to an exemplary embodiment of the present disclosure.

In the figure:

100. a lens module; 110. a transparent cover plate; 120. a lens; 121. a first lens; 122. a second lens; 123. a third lens; 124. a fourth lens; 130. a motion assembly; 140. a light guide assembly;

10. a display screen; 11. a display area; 12. a non-display area; 20. a frame; 30. a main board; 40. a battery; 50. and (7) a rear cover.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting on the number of their objects.

In the present exemplary embodiment, first, a lens module 100 is provided, as shown in fig. 1, the lens module 100 includes a transparent cover plate 110, a lens 120 and a light guide assembly 140, the lens 120 is disposed on one side of the transparent cover plate 110, external light can enter the lens 120 through the transparent cover plate 110 and form an image on an image plane of the lens 120, an optical magnification RED (optical magnification) of the lens module is greater than or equal to 0.5, and a conjugate distance of the lens module is greater than or equal to a preset threshold.

The lens module 100 provided by the embodiment of the present disclosure forms an image on an image plane after light reflected by an object to be photographed enters the lens 120 through the transparent cover plate 110, the optical magnification of the lens module is greater than or equal to 0.5, and the conjugate distance of the lens module is greater than or equal to a preset threshold, macro photography can be achieved, the lens module can be disposed inside an electronic device, and the problem that operation is complex due to the fact that the lens of the electronic device is difficult to align with an external lens during macro photography in the related art is solved.

Further, the lens module 100 provided in the embodiment of the present disclosure may further include a moving component 130, a light guide component 140, and a light emitting element (not shown in the figure), wherein the moving component 130 is connected to the lens 120, and the moving component 130 is used for adjusting a distance between the lens 120 and the transparent cover plate 110. The distance between the lens 120 and the transparent cover plate 110 can be adjusted by the moving assembly 130, so as to ensure the imaging range of the lens module and realize the focusing of the lens module. The light guide assembly 140 is disposed on a side of the transparent cover plate 110 close to the lens 120, and the light emitting portion of the light emitting element is opposite to the light guide assembly 160. The light emitting element provides a light source for the light guide assembly, and the light guide assembly 160 is used for converting light emitted by the light emitting element into uniform light so as to supplement light for an object to be shot when the macro photography is performed, thereby improving the quality of photos shot at the macro.

The following will describe each part of the lens module 100 provided in the embodiment of the present disclosure in detail:

the transparent cover plate 110 may be a glass cover plate or a transparent plastic cover plate, and the transparent cover plate 110 is used to allow external light to enter the lens 120, and the transparent cover plate 110 may protect the lens 120. In practical applications, the transparent cover 110 may be disposed on a housing of the electronic device, a through hole may be disposed on the housing of the electronic device, and the transparent cover 110 may be disposed on the through hole. The transparent cover 110 may be flush with the housing of the electronic device or the transparent cover 110 may protrude from the surface of the housing of the electronic device.

The distance between the transparent cover 110 and the lens 120 is greater than 2.5mm, i.e. the Object distance OBJ (imaging Object distance) of the lens module 100 is greater than or equal to 2.5 mm. An object-side Numerical Aperture NAO (Numerical Aperture) of the lens 120 is equal to or greater than 0.15, and an F-number F of the lens 120 is equal to or less than 2.5. The optical magnification RED of the lens 120 is equal to or greater than 0.5, and further, the optical magnification RED of the lens 120 is equal to or greater than 1.0.

The conjugate distance of the lens module is greater than or equal to 6 mm, and is the distance between the surface of the transparent cover plate 110 far away from the lens 120 and the image plane of the lens.

For example, the Effective focal length EFL (Effective focal length) of the lens 120 is 1.18 mm, the object-side numerical aperture NAO of the lens 120 is 0.20, the F-number F of the lens 120 is 1.24, the conjugate distance of the lens module 100 is 7 mm, the optical magnification RED of the lens module 100 is 1.25, and the object distance OBJ of the lens module 100 is 2.5 mm.

According to the lens module 100 provided by the embodiment of the disclosure, the numerical aperture NAO of the lens 120 is not less than 0.15, the F-number F of the lens 120 is not more than 2.5, the object distance OBJ of the lens module 100 is not less than 2.5mm, and the optical magnification RED of the lens module 100 is not less than 0.5, so that the problems of large object distance of a near focus, low optical magnification, severe MTF loss of an edge modulation transfer function at the near focus, low resolution and overlarge volume in macro imaging are solved. On the premise of ensuring the optical performance, the high-precision imaging of the 0cm ultramicro distance of the electronic equipment is realized, the lens module 100 has the advantages of high resolution, high magnification, clear imaging at the 0cm near-focus position, no damage to the edge field of view and the like, and the formed image can be used for observing a fine structure or inspecting and judging medical properties.

The lens 120 includes three or more lenses, and a plurality of lenses are formed on the transparent cover plate 110.

The plurality of lenses in the lens 120 may be plastic lenses or glass lenses, or the plurality of lens portions in the lens 120 are plastic lens portions and glass lenses. The lenses in lens 120 may be aspheric lenses or spherical lenses.

For example, the combination of the lenses in Lens 120 may be any one of 3P (Plastic Lens), 4P, 5P, 6P, 3G (Glass Lens), 4G, 5G, 1G2P, and 2G 2P. Wherein P represents a plastic lens, and G represents a glass lens. Of course, in practical applications, the combination manner of the lenses in the lens barrel 120 may be other manners, and the embodiment of the disclosure is not limited thereto.

The lens 120 will be described in detail below by taking the example that the lens 120 includes four lenses:

as shown in fig. 2, the lens 120 may include: a first lens 121, a second lens 122, a third lens 123, and a fourth lens 124. The first lens 121 has a convex surface facing a side of the first lens 121 away from the transparent cover plate 110. The second lens 122 is disposed on a side of the first lens 121 away from the transparent cover 110, a side of the second lens 122 close to the first lens 121 has a convex surface, and a side of the second lens 122 away from the first lens 121 has a concave surface. The third lens 123 is disposed on a side of the second lens 122 away from the first lens 121, both sides of the third lens 123 are aspheric, a side of the third lens 123 close to the second lens 122 has a convex surface, and a side of the third lens 123 away from the second lens 122 has a convex surface. The fourth lens 124 is disposed on a side of the third lens 123 far from the second lens 122, a double-sided surface of the fourth lens 124 is aspheric, a side of the fourth lens 124 close to the third lens 123 has a convex surface on an optical axis, and a side of the fourth lens 124 far from the third lens 123 has a concave surface on the optical axis.

The first lens 121 is convex toward the transparent cover plate 110 at the optical axis and has positive optical power. The second lens 122 has a concave surface facing the first lens 121 side near the optical axis and has negative power, and a convex surface facing the third lens 123 near the optical axis of the second lens 122. The side of the third lens 123 closer to the second lens 122 has a concave surface facing the image side near the optical axis and has negative refractive power, and the surface of the third lens 123 closer to the second lens 122 is formed as an aspherical surface having a pole at a position other than the optical axis. The side of the fourth lens 124 closer to the third lens 123 has a concave surface facing the image side near the optical axis and has positive power, and the surface of the fourth lens 124 closer to the third lens 123 is formed as an aspherical surface having a pole at a position other than the optical axis.

The first lens 121 has positive power and is formed in a meniscus shape with a convex surface facing the object side and a concave surface facing the second lens 122 side near the optical axis. Therefore, spherical aberration, curvature of field, and distortion are corrected well.

The convex surface of the second lens 122 on the side closer to the first lens has positive power, and is shaped into a meniscus shape with the convex surface facing the first lens 121 in the vicinity of the optical axis. Therefore, the incident angle of the light to the second lens 122 becomes an appropriate value, and chromatic aberration, curvature of field, and distortion are corrected well.

Both sides of the third lens 123 have positive power, and therefore, the incident angle of light to the third lens 123 becomes an appropriate value, and chromatic aberration, curvature of field, and distortion are well corrected.

The fourth lens 124 has a meniscus shape with a concave surface facing the image plane and has negative refractive power, and the object-side surface and the image-side surface of the fourth lens 124 are formed as aspherical surfaces having poles at positions other than the optical axis. Therefore, curvature of field and distortion are corrected better, and the incident angle of light to the image pickup element can be controlled appropriately.

In the present exemplary embodiment, when the length of the aspherical shape adopted on the aspherical surface of the lens surface in the optical axis direction is Z, the height in the direction orthogonal to the optical axis is H, the paraxial radius of curvature is R, the conic coefficient is k, and the aspherical coefficients are a4, a6, A8, a10, a12, a14, a16, a18, and a20, the length in the optical axis direction can be calculated by the following formula:

the data for lens 120 on this basis is as follows:

the effective focal length EFL of lens 120 is 1.18 millimeters;

the F-number F of the lens 120 is 1.24;

the object-side numerical aperture NAO of the lens 120 is 0.20 mm;

the object distance OBJ of the lens 120 is 2.5 mm;

the conjugate distance of the lens 120 is 7 mm;

the magnification RED of the lens 120 is 1.25 mm.

The surface data of lens 120 is shown in table 1:

TABLE 1

In table 1, r is a paraxial radius of curvature, d represents a distance (surface interval) between lens surfaces on an optical axis, Nd represents a refractive index of a d-line (reference wavelength), and ν d represents an abbe number with respect to the d-line. In the reference numeral i, 1 denotes a face of the first lens 121 close to the transparent cover 110, 2 denotes a face of the first lens 121 far from the transparent cover 110, 3 denotes a face of the second lens 122 close to the first lens 121, 4 denotes a face of the second lens 122 far from the first lens 121, 5 denotes a face of the third lens 123 close to the second lens 122, 6 denotes a face of the third lens 123 far from the second lens 122, 7 denotes a face of the fourth lens 124 close to the third lens 123, and 8 denotes a face of the fourth lens 124 far from the third lens 123.

The composition lens data of the lens 120 is shown in table 2:

TABLE 2

Aspheric data for lens 120 is shown in table 3:

TABLE 3

Table 3 (continuation)

When the parameters in the lens 120 are as shown in the above table, the axial chromatic aberration of the lens 120 is as shown in fig. 3a, the abscissa of the lens 120 is chromatic aberration in fig. 3a, the field curvature map of the lens 120 is as shown in fig. 3b, the abscissa of the lens 120 is field curvature in fig. 3b, the distortion map of the lens 120 is as shown in fig. 3c, and the abscissa of the lens 120 is distortion in fig. 3 c. As shown in fig. 3a, 3b and 3c, chromatic aberration, curvature of field and distortion of the lens 120 are well corrected.

Further, the lens 120 may further include a package housing, and the first lens 121, the second lens 122, the third lens 123 and the fourth lens 124 are packaged in the package housing.

The motion assembly 130 may include a motor and a slide rail, etc., and the motor output shaft may be coupled to the lens 120, for example, the motor output shaft may be coupled to the enclosure. The slide rail is arranged along the direction from the lens 120 to the transparent cover plate 110, and the motor drives the lens 120 to move along the slide rail.

The light guide assembly 140 is disposed on a side of the transparent cover plate 110 close to the lens 120. The light guide assembly 140 may include a light guide film, one end of the light guide film is connected to the transparent cover plate 110, the other end of the light guide film is connected to the lens 120, and the light guide film surrounds the lens, and a closed space is formed between the lens 120 and the transparent cover plate 110.

Illustratively, the light directing film surrounds the region between the transparent cover plate 110 and the lens 120. The lens 120 and the transparent cover plate 110 may be circular, and the light guide film may be a hollow cylindrical structure, one end of the hollow cylindrical structure is connected to the transparent cover plate 110, and the other end of the hollow cylindrical structure is connected to the lens 120 to form a closed cavity. The outer side of the light guide film may be provided with a total reflection film for preventing light leakage, and the total reflection film may be provided with a light hole opposite to the light source in the electronic device, so that light emitted from the light source may enter the light guide assembly 140.

As shown in fig. 1, the height of the object AB on the object plane is y, the image of the object AB on the image plane through the lens 120 is a 'B', the height of the a 'B' is y ', y'/y is greater than 0.5, that is, the optical magnification of the lens module 100 is greater than or equal to 0.5. Note that the broken line in fig. 1 indicates the optical path, and the arrow indicates the light propagation direction.

The lens module provided by the embodiment of the disclosure, light reflected by an object to be shot forms an image on an image surface after entering a lens through a transparent cover plate, the optical magnification ratio of the lens module is greater than or equal to 0.5, and the conjugate distance of the lens module is greater than or equal to a preset threshold value, macro photography can be realized, a light source is provided for the lens through a light guide assembly 140, zero-distance macro photography of electronic equipment can be realized, the lens module can be arranged inside the electronic equipment, the problem of difficulty in alignment of an external lens and the lens of the electronic equipment when macro photography is carried out in the related art is solved, and the problem of complex operation when photographing is caused.

According to the lens module 100 provided by the embodiment of the disclosure, the numerical aperture NAO of the lens 120 is not less than 0.20, the F-number F of the lens 120 is not more than 2.5, the object distance OBJ of the lens module 100 is not less than 2.5mm, and the optical magnification RED of the lens module 100 is not less than 0.5, so that the problems of large object distance of a near focus, low optical magnification, severe modulation transfer function MTF loss of an edge of the near focus, low resolution and overlarge volume in macro imaging are solved. On the premise of ensuring the optical performance, the high-precision imaging of the 0cm ultramicro distance of the electronic equipment is realized, the lens module 100 has the advantages of high resolution, high magnification, clear imaging at the 0cm near-focus position, no damage to the edge field of view and the like, and the formed image can be used for observing a fine structure or inspecting and judging medical properties.

An exemplary embodiment of the present disclosure further provides an electronic device, which includes the lens module 100 described above.

Further, the electronic device further includes: a back cover 50, an installation part is arranged on the back cover, and a transparent cover plate is arranged on the installation part

The rear cover can be a metal rear cover, a glass rear cover or a plastic rear cover, and the light-emitting element can be an LED light-emitting element or the light-emitting element can be shared with a flash lamp of the electronic device.

The electronic device provided by the embodiment of the disclosure can be an electronic device with a camera, such as a mobile phone, a tablet computer, a camera, an electronic reader or a notebook computer. The electronic device will be described in detail below by taking the electronic device as a mobile phone as an example.

As shown in fig. 4, the electronic device provided by the embodiment of the present disclosure may further include a display screen 10, a bezel 20, a main board 30, a battery 40, and a rear cover 50. The display screen 10 is mounted on the frame 20 to form a display surface of the electronic device, and the display screen 10 serves as a front shell of the electronic device. The rear cover 50 is adhered to the frame by double-sided adhesive, and the display screen 10, the frame 20 and the rear cover 50 form an accommodating space for accommodating other electronic components or functional modules of the electronic device. Meanwhile, the display screen 10 forms a display surface of the electronic device for displaying information such as images, texts, and the like. The Display screen 10 may be a Liquid Crystal Display (LCD) or an organic light-Emitting Diode (OLED) Display screen.

A glass cover may be provided over the display screen 10. Wherein, the glass cover plate can cover the display screen 10 to protect the display screen 10 and prevent the display screen 10 from being scratched or damaged by water.

The display screen 10 may include a display area 11 and a non-display area 12. The display area 11 performs a display function of the display screen 10 for displaying information such as images and texts. The non-display area 12 does not display information. The non-display area 12 may be used to set functional modules such as a camera, a receiver, a proximity sensor, and the like. In some embodiments, the non-display area 12 may include at least one area located at upper and lower portions of the display area 11.

The display screen 10 may be a full-face screen. At this time, the display screen 10 may display information in a full screen, so that the electronic apparatus has a large screen occupation ratio. The display screen 10 comprises only the display area 11 and no non-display area. At this moment, functional modules such as camera, proximity sensor among the electronic equipment can hide in display screen 10 below, and electronic equipment's fingerprint identification module can set up the back at electronic equipment.

The bezel 20 may be a hollow frame structure. The material of the frame 20 may include metal or plastic. The main board 30 is mounted inside the receiving space. For example, the main board 30 may be mounted on the frame 20 and accommodated in the accommodating space together with the frame 20. The main board 30 is provided with a grounding point to realize grounding of the main board 30. One or more of the functional modules such as a motor, a microphone, a speaker, a receiver, an earphone interface, a universal serial bus interface (USB interface), a camera, a proximity sensor, an ambient light sensor, a gyroscope, and a processor may be integrated on the main board 30. Meanwhile, the display screen 10 may be electrically connected to the main board 30.

The main board 30 is provided with a display control circuit. The display control circuit outputs an electric signal to the display screen 10 to control the display screen 10 to display information.

The battery 40 is mounted inside the receiving space. For example, the battery 40 may be mounted on the frame 20 and be accommodated in the accommodating space together with the frame 20. The battery 40 may be electrically connected to the motherboard 30 to enable the battery 40 to power the electronic device. The main board 30 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 40 to the various electronic components in the electronic device.

The rear cover 50 serves to form an outer contour of the electronic apparatus. The rear cover 50 may be integrally formed. In the forming process of the rear cover 50, a rear camera hole, a fingerprint identification module mounting hole and the like can be formed in the rear cover 50.

The lens module 100 provided by the embodiment of the present disclosure may be a lens of a front camera of an electronic device or a rear camera of the electronic device, and since the lens provided by the embodiment of the present disclosure is a macro lens, the lens module 100 provided by the embodiment of the present disclosure is generally suitable for a rear camera.

The lens module 100 can be connected to the rear cover 50, the main board 30 or the bezel 20. The transparent cover plate 110 may be disposed on the rear cover 50, the moving component 130 may be disposed on the rear cover 50, the frame 20, or the main board 30, and the lens 120 is connected to the moving component 130.

The lens module provided by the embodiment of the disclosure, light reflected by an object to be shot forms an image on an image surface after entering a lens through a transparent cover plate, the optical magnification ratio of the lens module is greater than or equal to 0.5, and the conjugate distance of the lens module is greater than or equal to a preset threshold value, macro photography can be realized, a light source is provided for the lens through a light guide assembly 140, zero-distance macro photography of electronic equipment can be realized, the lens module can be arranged inside the electronic equipment, the problem of difficulty in alignment of an external lens and the lens of the electronic equipment when macro photography is carried out in the related art is solved, and the problem of complex operation when photographing is caused.

According to the lens module 100 provided by the embodiment of the disclosure, the numerical aperture NAO of the lens 120 is not less than 0.20, the F-number F of the lens 120 is not more than 2.5, the object distance OBJ of the lens module 100 is not less than 2.5mm, and the optical magnification RED of the lens module 100 is not less than 0.5, so that the problems of large object distance of a near focus, low optical magnification, severe MTF loss of an edge modulation transfer function at the near focus, low resolution and overlarge volume in macro imaging are solved. On the premise of ensuring the optical performance, the high-precision imaging of the 0cm ultramicro distance of the electronic equipment is realized, the lens module 100 has the characteristics of high resolution, high magnification, clear imaging at the 0cm near-focus position, no damage to the edge field of view and the like, and the formed image can be used for observing a fine structure or inspecting and judging medical properties.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (11)

1. The lens module, characterized in that, the lens module includes:

a transparent cover plate;

the lens is arranged on one side of the transparent cover plate, and external light can enter the lens through the transparent cover plate and form an image on an image surface of the lens;

the optical magnification RED of the lens module is more than or equal to 0.5, and the conjugate distance of the lens module is more than or equal to a preset threshold value.

2. The lens module as claimed in claim 1, wherein the lens module further comprises:

the light guide assembly is arranged on one side, close to the lens, of the transparent cover plate.

3. The lens module as recited in claim 2, wherein the light guide assembly comprises:

the light guide film, light guide film one end connect in the transparent cover plate, the other end of light guide film is connected the camera lens, and the light guide film encircles the camera lens, the light guide film be in the camera lens with be formed with confined space between the transparent cover plate.

4. The lens module as claimed in claim 2, wherein the lens module further comprises:

and the light emitting part of the light emitting element is opposite to the light guide component.

5. The lens module as claimed in claim 1, wherein the lens module further comprises:

the moving assembly is connected with the lens and used for adjusting the distance between the lens and the transparent cover plate.

6. The lens module as claimed in claim 1, wherein a conjugate distance of the lens module is greater than or equal to 6 mm, and the conjugate distance of the lens module is a distance between a surface of the transparent cover plate away from the lens and the image plane.

7. The lens module as claimed in claim 1, wherein the lens module satisfies the following conditions:

and the object space numerical aperture NAO of the lens is more than or equal to 0.15.

8. The lens module as claimed in claim 1, wherein the lens includes three or more lenses, and a plurality of lenses are sequentially arranged at one side of the transparent cover plate.

9. The lens module as claimed in claim 8, wherein the lens comprises:

the first lens is provided with a convex surface, and the convex surface faces to one side of the first lens, which is far away from the transparent cover plate;

the second lens is arranged on one side, away from the transparent cover plate, of the first lens, and a convex surface is arranged on one side, close to the first lens, of the second lens, and a concave surface is arranged on one side, away from the first lens, of the second lens;

the third lens is arranged on one side, away from the first lens, of the second lens, the double surfaces of the third lens are aspheric surfaces, one side, close to the second lens, of the third lens is provided with a convex surface, and one side, away from the second lens, of the third lens is provided with a convex surface;

the fourth lens is arranged on one side, far away from the second lens, of the third lens, the double surfaces of the fourth lens are aspheric surfaces, a convex surface is arranged on one side, close to the third lens, of the fourth lens at the position of an optical axis, and a concave surface is arranged on one side, far away from the third lens, of the fourth lens at the position of the optical axis.

10. An electronic device, comprising the lens module according to any one of claims 1 to 9.

11. The electronic device of claim 10, wherein the electronic device further comprises:

the back lid, be provided with the installation department on the back lid, transparent cover locates the installation department.

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