CN111580255A

CN111580255A - Lens module and electronic equipment

Info

Publication number: CN111580255A
Application number: CN202010525714.XA
Authority: CN
Inventors: 韦怡
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-08-25

Abstract

The present disclosure relates to a lens module and an electronic device, the lens module includes: the device comprises a transparent cover plate, a first lens, a reflecting assembly and a second lens, wherein the first lens is arranged on one side of the transparent cover plate, and external light can enter the first lens through the transparent cover plate; the reflecting assembly is arranged on one side, away from the transparent cover plate, of the first lens, and is provided with a reflecting surface used for reflecting light rays transmitted to the reflecting assembly from the first lens; the second lens is configured to be capable of receiving the light reflected by the reflection assembly and imaging on a lens image surface, and the optical magnification RED of the lens module is larger than or equal to 1.0, so that macro imaging can be realized.

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 first lens is arranged on one side of the transparent cover plate, and external light can enter the first lens through the transparent cover plate;

the reflecting assembly is arranged on one side, away from the transparent cover plate, of the first lens, and is provided with a reflecting surface used for reflecting light rays transmitted to the reflecting assembly from the first lens;

a second lens configured to receive the light reflected by the reflection component and form an image on an image plane of the second lens;

the optical magnification RED of the lens module is more than or equal to 1.0.

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

The embodiment of the disclosure provides a lens module, treat that the light that the shooting object reflects passes through transparent cover and gets into first camera lens, the reflection light shines to the plane of reflection subassembly behind first camera lens, get into the second camera lens after the plane of reflection reflects, finally form images on image plane through the second camera lens, the optical magnification ratio more than or equal to 1 of lens module, can realize the macro-photography, and the lens module can set up inside electronic equipment, the camera lens counterpoint difficulty of external camera lens and electronic equipment when having solved the macro-photography among the correlation technique, the problem of operation complicacy when leading to shooing.

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 first lens provided in an exemplary embodiment of the present disclosure;

fig. 3 is a schematic view of a second lens provided in an exemplary embodiment of the present disclosure;

fig. 4a is a chromatic aberration diagram of a first lens provided in an exemplary embodiment of the present disclosure;

fig. 4b is a curvature of field diagram of a first lens provided in an exemplary embodiment of the present disclosure;

fig. 4c is a distortion diagram of a first lens provided in an exemplary embodiment of the present disclosure;

fig. 5a is a chromatic aberration diagram of a second lens provided in an exemplary embodiment of the present disclosure;

fig. 5b is a curvature of field diagram of a second lens provided in an exemplary embodiment of the present disclosure;

fig. 5c is a distortion diagram of a second lens provided in an exemplary embodiment of the present disclosure;

fig. 6 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 first lens; 121. a first lens; 122. a second lens; 123. a third lens; 124. a fourth lens; 130. a reflective component; 140. a second lens; 141. a fifth lens; 142. a sixth lens; 143. a seventh lens; 144. an eighth lens; 150. a motion assembly; 160. 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.

First, as shown in fig. 1, the lens module 100 includes a transparent cover plate 110, a first lens 120, a reflective element 130, and a second lens 140, where the first lens 120 is disposed on one side of the transparent cover plate 110, and external light can enter the first lens 120 through the transparent cover plate 110; the reflection assembly 130 is disposed on a side of the first lens 120 away from the transparent cover plate 110, and the reflection assembly 130 has a reflection surface for reflecting light transmitted from the first lens 120 to the reflection assembly 130; the second lens 140 is configured to receive the light reflected by the reflection assembly 130 and form an image on an image plane of the second lens 140, and an optical magnification RED (optical magnification) of the lens module is greater than or equal to 1.0.

In the lens module 100 provided by the embodiment of the present disclosure, light reflected by an object to be photographed enters the first lens 120 through the transparent cover plate 110, the reflected light passes through the first lens 120 and then irradiates to the reflection surface of the reflection assembly 130, and is reflected by the reflection surface and then enters the second lens 140, and finally is imaged on an image plane through the second lens 140, and the optical magnification RED of the lens module is greater than or equal to 1, so that macro photography can be realized; the problem of during the microspur is shot, external camera lens and electronic equipment's camera lens counterpoint difficulty in the correlation technique, operation is complicated when leading to shooing is solved.

Further, the lens module 100 provided in the embodiment of the present disclosure may further include a moving component 150, a light guide component 160, and a light emitting element (not shown in the drawings), wherein the moving component 150 is connected to the first lens 120, and the moving component 150 is used for adjusting a distance between the first lens 120 and the transparent cover plate 110. The light guide assembly 160 is disposed on a side of the transparent cover plate 110 close to the first 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 distance between the first lens 120 and the transparent cover plate 110 can be adjusted by the moving assembly 150, and the imaging range and focusing can be ensured by the moving assembly 150. The light emitting elements provide light to the light guide assembly 160, so that the light source can be provided to the object to be photographed, and 0cm imaging can be realized.

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 first lens 120, and the transparent cover plate 110 may protect the first 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 optical parameters of the lens module provided by the embodiment of the disclosure are as follows:

the difference between the Field of view FOV of the second lens 140 and the Field of view FOV of the first lens 120 is 10 ° or less and 0 ° or more. An object-side numerical aperture NAO (numerical aperture) of the first lens 120 is not less than 0.2; the object numerical aperture NAO of the second lens 140 is more than or equal to 0.2; the F-number F of the first lens 120 is less than or equal to 2.5; the F-number F of the second lens 140 is less than or equal to 2.5.

The Object distance OBJ (imaging Object distance) of the lens module 100 is greater than or equal to 0.9mm, that is, the distance between the transparent cover plate 110 and the first lens 120 is greater than 0.9 mm.

For example, the Effective focal length EFL (Effective focal length) of the first lens 120 is 2.21 mm, the object-side numerical aperture NAO of the first lens 120 is 0.23, the F-number F of the first lens 120 is 2.2, and the field angle FOV of the first lens 120 is 68 degrees; the effective focal length EFL of the second lens 140 is 2.64 mm, the object-side numerical aperture NAO of the second lens 140 is 0.23, the F-number F of the second lens 140 is 2.2, and the field angle FOV of the second lens 140 is 68.1 degrees.

In the lens module 100 provided in the embodiment of the present disclosure, the field angle FOV of the second lens 140 is greater than or equal to the field angle FOV of the first lens 120, and the difference between the field angle FOV of the second lens 140 and the field angle FOV of the first lens 120 is less than or equal to the preset threshold, so that the first lens 120 and the second lens 140 can be matched. The numerical apertures NAO of the first lens 120 and the second lens 140 are not less than 0.20, the f-numbers Fno of the first lens 120 and the second lens 140 are not more than 2.5, the object distance OBJ of the lens module 100 is not less than 0.9mm, the optical magnification RED of the lens module 100 is not less than 1.0, and the difference between the field angle FOV of the second lens 140 and the field angle FOV of the first lens 120 is not more than 10 degrees, so that the problems of large object distance of a near focus, low optical magnification, serious loss of modulation transfer function MTF of the edge 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 first lens 120 includes a plurality of lenses, which are sequentially arranged between the transparent cover plate 110 and the reflective member 130. The second lens 140 includes a plurality of lenses, which are sequentially arranged on the light-emitting side of the reflective assembly 130.

The plurality of lenses in the first lens 120 may be plastic lenses or glass lenses, or the plurality of lens portions in the first lens 120 are plastic lens portions and glass lenses. The plurality of lenses in the second lens 140 may be plastic lenses or glass lenses, or the plurality of lens portions in the second lens 140 are plastic lens portions and glass lenses. The number of lenses in the first lens 120 and the number of wafers in the second lens 140 may be the same or different. The lenses of the first lens 120 and the second lens 140 may be aspheric lenses or spherical lenses.

For example, the combination of the lenses in the first Lens 120 and the second Lens 140 may be any one of 4P (Plastic Lens) +4P, 2P +3P, 3P +4P, 2P +4P, 3G (Glass Lens) +3G, 2G +4G, 1G2P +3P, or 2G2P +1G 3P. 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 first lens 120 and the second lens 140 may be other manners, and the embodiment of the disclosure is not limited thereto.

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

as shown in fig. 2, the first lens 120 may include: a first lens 121, a second lens 122, a third lens 123 and a fourth lens 124, wherein the first lens 121 has a convex surface facing the transparent cover plate 110; the second lens 122 is arranged on one side of the first lens 121 far away from the transparent cover plate 110, and one side of the second lens 122 close to the first lens 121 is provided with a concave surface; the third lens 123 is arranged on one side of the second lens 122 far away from the first lens 121, and the double surfaces of the third lens 123 are aspheric surfaces; the fourth lens 124 is disposed on a side of the third lens 123 away from the second lens 122, and both surfaces of the fourth lens 124 are aspheric. A side of the third lens 123 close to the second lens 122 has a concave surface at an optical axis, a side of the third lens 123 close to the fourth lens 124 has a convex surface at the optical axis, a side of the fourth lens 124 close to the third lens 123 has a concave surface at the optical axis, and a side of the fourth lens 124 far from the third lens 123 has a concave surface at the optical axis.

The first lens 121 is convex toward the transparent cover plate 110 at the optical axis and has positive optical power. A face of the second lens 122 close to the first lens 121 has a concave surface at the optical axis and has a negative power. The third lens 123 has a concave surface facing the second lens 122 side near the optical axis and has negative optical power. The fourth lens 124 has a concave surface facing the image side near the optical axis and has negative refractive power, and the image side surface of the fourth lens 124 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 shaped such that a convex surface faces the object side in the vicinity of the optical axis. Therefore, spherical aberration, curvature of field, and distortion can be corrected well.

The second lens 122 has negative power, and is shaped such that a concave surface faces the first lens 121 side near the optical axis and the concave surface takes a meniscus shape. Therefore, spherical aberration, curvature of field, and distortion can be corrected well.

The third lens 123 has positive power, and is shaped such that a concave surface faces the second lens 122 side and a convex surface faces the image side in the vicinity of the optical axis. Therefore, the incident angle of the light to the third lens 123 becomes an appropriate value, and chromatic aberration, curvature of field, and distortion can be corrected well.

The fourth lens 124 has negative power, and is shaped such that a convex surface faces the third lens 123 side and a concave surface faces the reflection member 130 side near the optical axis. Therefore, chromatic aberration, astigmatism, curvature of field, and distortion can be corrected well. 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 embodiment, when the length of the aspherical surface adopted in 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 surface 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:

on this basis, the data of the first lens 120 is as follows:

the effective focal length EFL of the first lens 120 is 2.21 mm;

the F-number F of the first lens 120 is 2.2;

the object numerical aperture NAO of the first lens 120 is 0.23 mm;

the field angle FOV of the first lens 120 is 68 degrees.

The surface data of the first 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 constituent lens data of the first lens 120 is shown in table 2:

TABLE 2

Aspheric data of the first lens 121 is shown in table 3:

TABLE 3

Table 3 (continuation)

When the parameters in the first lens 120 are as shown in the above table, the on-axis chromatic aberration of the first lens 120 is as shown in fig. 4a, the abscissa of the first lens 120 is chromatic aberration in fig. 4a, the field curvature diagram of the first lens 120 is as shown in fig. 4b, the abscissa of the first lens 120 is field curvature in fig. 4b, the distortion diagram of the first lens 120 is as shown in fig. 4c, and the abscissa of the first lens 120 is distortion. As shown in fig. 4a, 4b, and 4c, chromatic aberration, curvature of field, and distortion of the first lens 120 are well corrected.

As shown in fig. 3, the second lens 140 includes: a fifth lens 141, a sixth lens 142, a seventh lens 143, and an eighth lens 144; the fifth lens 141 has a convex surface facing the reflective element; the sixth lens 142 is disposed on a side of the fifth lens 141 away from the reflective assembly 130, and a side of the sixth lens 142 close to the fifth lens 141 has a concave surface; the seventh lens 143 is disposed on a side of the sixth lens 142 away from the fifth lens 141, and both surfaces of the seventh lens 143 are aspheric; the eighth lens 144 is disposed on a side of the seventh lens 143 away from the sixth lens 142, and both surfaces of the eighth lens 144 are aspheric.

A side of the seventh lens 143 close to the sixth lens 142 has a concave surface at an optical axis, a side of the seventh lens 143 close to the eighth lens 144 has a convex surface at the optical axis, a side of the eighth lens 144 close to the seventh lens 143 has a concave surface at the optical axis, and a side of the eighth lens 144 distant from the seventh lens 143 has a concave surface at the optical axis.

The fifth lens 141 is convex toward the transparent cover plate 110 at an optical axis and has positive optical power. A face of the sixth lens 142 close to the fifth lens 141 has a concave surface at the optical axis and has negative optical power. The seventh lens 143 has a concave surface facing the sixth lens 142 side near the optical axis and has negative optical power. The eighth lens element 144 has a concave surface facing the image side near the optical axis and has negative refractive power, and the image side surface of the eighth lens element 144 is formed as an aspherical surface having a pole at a position other than the optical axis.

The fifth lens 141 has positive power and is shaped such that a convex surface faces the object side in the vicinity of the optical axis. Therefore, spherical aberration, curvature of field, and distortion can be corrected well.

The sixth lens 142 has negative power and is shaped so that its concave surface faces the first lens 121 side in the vicinity of the optical axis. Therefore, spherical aberration, curvature of field, and distortion can be corrected well.

The seventh lens 143 has positive power, and is shaped such that a concave surface faces the fifth lens 141 side and a convex surface faces the image side in the vicinity of the optical axis. Therefore, the incident angle of the light to the seventh lens 143 becomes an appropriate value, and chromatic aberration, curvature of field, and distortion can be corrected well.

The eighth lens 144 has negative power, and is shaped such that a convex surface faces the seventh lens 143 side near the optical axis, and a concave surface faces the reflection member 130 side. Therefore, chromatic aberration, astigmatism, curvature of field, and distortion can be corrected well. The object-side surface and the image-side surface of the eighth lens 144 are aspheric surfaces having poles at positions other than the optical axis. Therefore, field curvature and distortion can be corrected more favorably, and the incident angle of light to the image pickup element can be controlled appropriately.

On the basis, the data of the two shots are as follows:

the effective focal length EFL of the second lens 140 is 2.64 mm;

the F-number F of the second lens 140 is 2.2;

the object-side numerical aperture NAO of the second lens 140 is 0.23 mm;

the field angle FOV of the second lens 140 is 68.1 degrees.

The surface data of the second lens 140 is shown in table 4:

TABLE 4

In table 4, r is a paraxial radius of curvature, d represents a distance (surface interval) between lens surfaces on the 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. Reference numeral i denotes a face of the fifth lens 141 close to the reflection unit 130, 2 denotes a face of the fifth lens 141 distant from the reflection unit 130, 3 denotes a face of the sixth lens 142 close to the fifth lens 141, 4 denotes a face of the sixth lens 142 distant from the fifth lens 141, 5 denotes a face of the seventh lens 143 close to the sixth lens 142, 6 denotes a face of the seventh lens 143 distant from the sixth lens 142, 7 denotes a face of the eighth lens 144 close to the seventh lens 143, and 8 denotes a face of the eighth lens 144 distant from the seventh lens 143.

The constituent lens data of the second lens 140 are shown in table 5:

TABLE 5

Aspheric data of the first lens 121 is shown in table 6:

TABLE 6

Table 6 (continue)

When the parameters in the second lens 140 are as shown in the above table, the axial chromatic aberration of the second lens 140 is as shown in fig. 5a, the abscissa is chromatic aberration in fig. 5a, the field curvature diagram of the second lens 140 is as shown in fig. 5b, the abscissa is field curvature in fig. 5b, the distortion diagram of the second lens 140 is as shown in fig. 5c, and the abscissa is distortion in fig. 5 c. As shown in fig. 5a, 5b and 5c, chromatic aberration, curvature of field and distortion of the second lens 140 are well corrected.

Further, the first lens 120 may further include a first package housing, and the first lens 121, the second lens 122, the third lens 123 and the fourth lens 124 are packaged in the first package housing. The second lens 140 may further include a second package case in which the fifth lens 141, the sixth lens 142, the seventh lens 143, and the eighth lens 144 are packaged.

The moving assembly 150 may include a motor and a slide rail, etc., and an output shaft of the motor may be connected to the first lens 120, for example, the output shaft of the motor may be connected to the first package housing. The slide rail is arranged along the direction from the first lens 120 to the transparent cover plate 110, and the motor drives the first lens 120 to move along the slide rail.

The light guide assembly 160 is disposed on a side of the transparent cover plate 110 close to the first lens 120. The light guide assembly 160 may include a light guide film surrounding an area between the transparent cover plate 110 and the first lens 120. The exemplary first lens 120 and the transparent cover plate 110 may be circular, and in this case, 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 first lens 120 to form a closed cavity. The outer side of the light guide film can be provided with a total reflection film, the total reflection film is used for preventing light leakage, a light hole can be formed in the total reflection film, and the light hole is opposite to a light source in the electronic equipment, so that light emitted by the light source can enter the light guide assembly 160.

The reflecting assembly 130 includes a right angle prism, the right angle face of which is a reflecting face that may be provided with a specular reflective coating. The first lens 120 is opposite to one right-angled surface of the right-angled prism, and the second lens 140 is opposite to the other right-angled surface of the right-angled prism. The optical axis of the first lens 120 is perpendicular to the optical axis of the second lens 140. Of course, in practical applications, the reflection assembly 130 may also include other reflectors, which is not specifically limited in this disclosure. The light emitting elements may be LED light emitting elements or the light emitting elements may be shared with an electronic device flash.

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 first lens 120, the reflective assembly 130 and the second lens 140 is a 'B', the height of the a 'B' is y ', y'/y is greater than 1, that is, the optical magnification of the lens module 100 is greater than or equal to 1. Note that the broken line in fig. 1 indicates the optical path, and the arrow indicates the light propagation direction.

In the lens module 100 provided by the embodiment of the present disclosure, light reflected by an object to be photographed enters the first lens 120 through the transparent cover plate 110, the reflected light passes through the first lens 120 and then irradiates to the reflection surface of the reflection assembly 130, and is reflected by the reflection surface and then enters the second lens 140, and finally is imaged on an image plane through the second lens 140, and the optical magnification of the lens module is greater than or equal to 1, so that macro photography can be realized; the problem of during the microspur is shot, external camera lens and electronic equipment's camera lens counterpoint difficulty in the correlation technique, operation is complicated when leading to shooing is solved.

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 comprises a rear cover 50, wherein a mounting portion is arranged on the rear cover 50, and the transparent cover plate is arranged on the mounting portion. Wherein, the rear cover can be a metal rear cover, a glass rear cover or a plastic rear cover.

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. 6, the electronic device provided in 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 element 150 may be disposed on the rear cover 50, the frame 20 or the main board 30, the first lens 120 is connected to the moving element 150, and the second lens 140 may be connected to the frame 20 or the main board 30.

The electronic device provided by the embodiment of the disclosure includes the lens module 100, light reflected by an object to be photographed enters the first lens 120 through the transparent cover plate 110, the reflected light irradiates to the reflection surface of the reflection assembly 130 after passing through the first lens 120, enters the second lens 140 after being reflected by the reflection surface, and finally forms an image on an image surface through the second lens 140, and the optical magnification of the lens module is greater than or equal to 1, so that macro photography can be realized; the problem of during the microspur is shot, external camera lens and electronic equipment's camera lens counterpoint difficulty in the correlation technique, operation is complicated when leading to shooing is solved.

Further, the field angle FOV of the second lens 140 is equal to or greater than the field angle FOV of the first lens 120, and the difference between the field angle FOV of the second lens 140 and the field angle FOV of the first lens 120 is equal to or less than the preset threshold, which enables matching of the first lens 120 and the second lens 140. The numerical apertures NAO of the first lens 120 and the second lens 140 are not less than 0.20, the f-numbers Fno of the first lens 120 and the second lens 140 are not more than 2.5, the object distance OBJ of the lens module 100 is not less than 0.9mm, the optical magnification RED of the lens module 100 is not less than 1.0, and the difference between the field angle FOV2 of the second lens 140 and the field angle FOV of the first lens 120 is not more than 10 degrees, so that the problems of large near-focus object distance, low optical magnification, serious loss of modulation transfer function MTF at the edge of a near focus, low resolution and overlarge volume in macro-range 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.

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

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

a transparent cover plate;

the optical magnification RED of the lens module is more than or equal to 1.0.

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

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

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

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

4. The lens module as claimed in claim 3, 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 recited in claim 1, wherein the reflection assembly includes a right-angle prism, the inclined surface of the right-angle prism is a reflection surface, the first lens is opposite to one right-angle surface of the right-angle prism, and the second lens is opposite to the other right-angle surface of the right-angle prism.

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

the difference between the angle of view FOV of the second lens and the angle of view FOV of the first lens is equal to or less than 10 ° and equal to or greater than 0 °.

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

the object space numerical aperture NAO of the first lens is more than or equal to 0.2;

the object space numerical aperture NAO of the second lens is more than or equal to 0.2;

the F-number F of the first lens is less than or equal to 2.5;

and the F-number F of the second lens is less than or equal to 2.5.

8. The lens module as recited in claim 1, wherein the first lens comprises a plurality of lenses, the plurality of lenses being sequentially arranged between the transparent cover plate and the reflective assembly.

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

a first lens having a convex surface facing the transparent cover plate;

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

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

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 concave 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. The lens module as claimed in claim 1, wherein the second lens includes a plurality of lenses, and the plurality of lenses are sequentially arranged on the light-emitting side of the reflective element.

11. The lens module as claimed in claim 10, wherein the second lens comprises:

a fifth lens having a convex surface facing the reflective component;

the sixth lens is arranged on one side, away from the reflecting component, of the fifth lens, and a concave surface is arranged on one side, close to the fifth lens, of the sixth lens;

the seventh lens is arranged on one side, away from the fifth lens, of the sixth lens, the double surfaces of the seventh lens are aspheric, one side, close to the sixth lens, of the seventh lens is provided with a concave surface at the optical axis, and one side, away from the sixth lens, of the seventh lens is provided with a convex surface at the optical axis;

the eighth lens is arranged on one side, away from the sixth lens, of the seventh lens, the double surfaces of the eighth lens are aspheric, one side, close to the seventh lens, of the eighth lens is provided with a concave surface at the optical axis, and one side, away from the seventh lens, of the eighth lens is provided with a concave surface at the optical axis.

12. An electronic device, comprising the lens module according to any one of claims 1 to 11.

13. The electronic device of claim 12, 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.