CN114815159B - Image capturing module and electronic equipment - Google Patents

Abstract

This application discloses an imaging module and electronic equipment. From the object side to the image side, the imaging module includes a first lens, an aperture, a second lens, a third lens, a fourth lens, a fifth lens and an image sensor in order. The first lens has negative refractive power. The second lens has positive refractive power. The third lens has negative refractive power. The fourth lens has positive refractive power. The fifth lens has negative refractive power. The imaging module satisfies the following conditional expression: 0.8<|TTL/Diag|<1.2; TTL is the axial distance from the object side of the first lens to the imaging surface of the imaging module, and Diag is the diagonal length of the image sensor. The five lenses in the imaging module have a reasonable thickness configuration, and the image sensor has a reasonable size, so that the ratio of the total optical length of the imaging module to the diagonal length of the image sensor is within a reasonable range, so there is no need to set With two lenses, the macro function and microscopic function can be realized simultaneously through the same imaging module, which not only reduces costs, but also saves space in electronic equipment.

Description

Imaging modules and electronic equipment

Technical field

This application relates to optical imaging technology, and in particular to an imaging module and electronic equipment.

Background technique

Currently, the macro function on electronic devices, such as mobile phones, PADs, etc., is achieved by focusing on objects at a close distance (for example, about 3cm) through an ultra-wide-angle lens. Since the focal length of the ultra-wide-angle lens is still large, it cannot focus on the object. Achieve the microscopic functions that users first need at a closer distance. Moreover, as the size of the image sensor used with the ultra-wide-angle lens in electronic equipment continues to increase, the focal length of the ultra-wide-angle lens is also getting longer and longer, and it is also difficult to focus to 3cm, so it is becoming more and more difficult to achieve the macro function. The more difficult it is. On the other hand, the microscope lens on electronic equipment is usually a fixed-focus lens without an autofocus function, and the working scene is relatively simple.

Therefore, in order to achieve both macro and microscopic functions on an electronic device, at least two lenses are required, which will lead to an increase in cost and take up more space inside the electronic device.

Contents of the invention

Embodiments of the present application provide an imaging module and an electronic device to at least solve the problem of how to realize macro functions and microscopic functions at the same time.

An imaging module according to the embodiment of the present application includes a first lens, an aperture, a second lens, a third lens, a fourth lens, a fifth lens and an image sensor in order from the object side to the image side. The first lens has negative refractive power. The second lens has positive refractive power. The third lens has negative refractive power. The fourth lens has positive refractive power. The fifth lens has negative refractive power. The imaging module satisfies the following conditional expression: 0.8<|TTL/Diag|<1.2; where TTL is the axial distance from the object side of the first lens to the imaging surface of the imaging module, and Diag is the diagonal of the image sensor length.

The electronic device according to the embodiment of the present application includes a housing and an imaging module. From the object side to the image side, the imaging module includes a first lens, an aperture, a second lens, a third lens, a fourth lens, a fifth lens and an image sensor in order. The first lens has negative refractive power. The second lens has positive refractive power. The third lens has negative refractive power. The fourth lens has positive refractive power. The fifth lens has negative refractive power. The imaging module satisfies the following conditional expression: 0.8<|TTL/Diag|<1.2; where TTL is the axial distance from the object side of the first lens to the imaging surface of the imaging module, and Diag is the diagonal of the image sensor length. The imaging module is combined with the housing.

In the imaging module and electronic device of the present application, the first lens, the second lens, the third lens, the fourth lens, and the fifth lens have reasonable thickness configurations, and the image sensor has a reasonable size, so that the imaging module The ratio between the total optical length of the group and the diagonal length of the image sensor is within a reasonable range, so that the macro function and microscopic function can be realized simultaneously through the same imaging module without setting up two lenses, while reducing the cost. While reducing costs, it can also save space inside electronic equipment.

Additional aspects and advantages of embodiments of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is a schematic structural diagram of an imaging module according to the first embodiment of the present application;

Figure 2 is a diagram showing the resolution performance of the MTF lens when the imaging module is in macro mode in the first embodiment;

Figure 3 is a lateral color difference diagram (mm) of the imaging module in macro mode in the first embodiment;

Figures 4 and 5 are respectively the astigmatism field curve (mm) and distortion curve (%) of the imaging module in the macro mode in the first embodiment;

Figure 6 is a diagram showing the resolving power of the MTF lens when the imaging module is in microscopic mode in the first embodiment;

Figure 7 is a lateral color difference diagram (mm) of the imaging module in the microscopic mode in the first embodiment;

Figures 8 and 9 are respectively the astigmatism field curve (mm) and distortion curve (%) of the imaging module in the microscopic mode in the first embodiment;

Figure 10 is a schematic structural diagram of an imaging module according to the second embodiment of the present application;

Figure 11 is a diagram showing the resolution performance of the MTF lens when the imaging module is in macro mode in the second embodiment;

Figure 12 is a lateral color difference diagram (mm) of the imaging module in macro mode in the second embodiment;

Figures 13 and 14 are respectively the astigmatism field curve (mm) and distortion curve (%) of the imaging module in the macro mode in the second embodiment;

Figure 15 is a diagram showing the resolution performance of the MTF lens when the imaging module is in microscopic mode in the second embodiment;

Figure 16 is a lateral color difference diagram (mm) of the imaging module in the microscopic mode in the second embodiment;

Figures 17 and 18 are respectively the astigmatism field curve (mm) and distortion curve (%) of the imaging module in the microscopic mode in the second embodiment;

Figure 19 is a schematic structural diagram of an imaging module according to the third embodiment of the present application;

Figure 20 is a diagram showing the resolution performance of the MTF lens when the imaging module is in macro mode in the third embodiment;

Figure 21 is a lateral color difference diagram (mm) of the imaging module in macro mode in the third embodiment;

Figures 22 and 23 are respectively the astigmatism field curve (mm) and distortion curve (%) of the imaging module in the macro mode in the third embodiment;

Figure 24 is a diagram showing the resolution performance of the MTF lens when the imaging module is in microscopic mode in the third embodiment;

Figure 25 is a lateral color difference diagram (mm) of the imaging module in the microscopic mode in the third embodiment;

Figures 26 and 27 are respectively the astigmatism field curve (mm) and distortion curve (%) of the imaging module in the microscopic mode in the third embodiment;

Figure 28 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Description of main component symbols:

Electronic Equipment 100

The first lens L1, the aperture STO, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5;

Imaging module 20, image sensor 22, cover 24, filter/protective glass 26.

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application and cannot be understood as limiting the embodiments of the present application.

Currently, the macro function on electronic devices, such as mobile phones, PADs, etc., is achieved by focusing on objects at a close distance (for example, about 3cm) through an ultra-wide-angle lens. Since the focal length of the ultra-wide-angle lens is still large, it cannot focus on the object. Achieve the microscopic functions that users first need at a closer distance. Moreover, as the size of the image sensor used with the ultra-wide-angle lens in electronic equipment continues to increase, the focal length of the ultra-wide-angle lens is also getting longer and longer, and it is also difficult to focus to 3cm, so it is becoming more and more difficult to achieve the macro function. The more difficult it is. On the other hand, the microscope lens on electronic equipment is usually a fixed-focus lens without an autofocus function, and the working scene is relatively simple. Therefore, in order to achieve both macro and microscopic functions on an electronic device, at least two lenses are required, which will lead to an increase in cost and take up more space inside the electronic device. To solve this problem, this application provides an image acquisition method for the imaging module 20 and the electronic device 100 .

Please refer to Figure 1, Figure 10 and Figure 19 together. The imaging module 20 in the embodiment of the present application includes a first lens L1, an aperture STO, a second lens L2, and a third lens L3 in order from the object side to the image side. , the fourth lens L4, the fifth lens L5 and the image sensor 22. The first lens L1 has negative refractive power. The second lens L2 has positive refractive power. The third lens L3 has negative refractive power. The fourth lens L4 has positive refractive power. The fifth lens L5 has negative refractive power.

The diaphragm STO can be an aperture diaphragm or a field diaphragm. The embodiment of the present application is explained by taking the diaphragm STO as an aperture diaphragm as an example. The diaphragm STO can be set between the first lens L1 and the subject, or on the surface of any one lens, or between any two lenses. In the embodiment of the present application, the diaphragm STO is disposed between the first lens L1 and the second lens L2, which can better control the amount of light entering and improve the imaging effect.

The imaging module 20 satisfies the following conditional expression: 0.80<|TTL/Diag|<1.20; where TTL is the axial distance from the object side 3 of the first lens L1 to the imaging surface 16 of the imaging module 20, and Diag is the image Diagonal length of sensor 22. That is to say, |TTL/Diag| can be any value within the interval (0.800, 1.200). For example, the value can be 0.821, 0.832, 0.844, 0.855, 0.866, 0.875, 0.885, 0.905, 0.953, 0.994, 1.005 , 1.021, 1.155, 1.166, 1.198 and so on.

In the imaging module 20 of the present application, the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 have a reasonable thickness configuration, and the image sensor 22 has a reasonable size. The ratio between the total optical length of the imaging module and the diagonal length of the image sensor 22 is within a reasonable range, so that the macro function and the macro function can be simultaneously realized through the same imaging module 20 without setting up two lenses. The microscopic function can not only reduce costs, but also save space inside the electronic device 100 (shown in Figure 28).

In some embodiments, the imaging module 20 satisfies the following conditional expression: 0.3<|f/f1|<0.6; where f1 is the focal length of the first lens L1, and f is the system focal length of the imaging module 20. That is to say, |f/f1| can be any value within the interval (0.3, 0.6). For example, the value can be 0.547, 0.754, 0.935, 0.937, 1.271, 1.329, 1.343, 1.362, 1.368, 1.464, 1.585 etc.

When the imaging module 20 satisfies the conditional expression 0.3<|f/f1|<0.6, the first lens L1 provides negative refractive power and reasonably distributes the positive and negative refractive power of the imaging module 20, which can effectively balance and control the imaging module 20. Spherical aberration corrects the aberration of the imaging module 20 , effectively eliminates the chromatic aberration of the imaging module 20 , and reduces the sensitivity of the imaging module 20 , thereby improving the imaging quality of the imaging module 20 .

In some embodiments, the imaging module 20 satisfies the following conditional expression: 0.7<|f/f2|<1.5; where f2 is the focal length of the second lens L2, and f is the system focal length of the imaging module 20. That is to say, |f/f2| can be any value within the interval (0.7, 1.5). For example, the value can be 0.747, 0.754, 0.935, 0.937, 1.271, 1.329, 1.343, 1.362, 1.368, 1.464, 1.485 etc.

When the imaging module 20 satisfies the conditional expression 0.7<|f/f2|<1.5, the second lens L2 provides positive refractive power and reasonably distributes the positive and negative refractive powers of the imaging module 20, which can effectively balance and control the refractive power of the imaging module 20. Spherical aberration corrects the aberration of the imaging module 20 , effectively eliminates the chromatic aberration of the imaging module 20 , and reduces the sensitivity of the imaging module 20 , thereby improving the imaging quality of the imaging module 20 .

In some embodiments, the imaging module 20 satisfies the following conditional expression: 0.3<|f/f3|<0.7; where f3 is the focal length of the third lens L3, and f is the system focal length of the imaging module 20. That is to say, |f/f3| can be any value within the interval (0.3, 0.7). For example, the value can be 0.347, 0.354, 0.335, 0.337, 0.427, 0.459, 0.500, 0.560, 0.580, 0.600, 0.620 , 0.680 and so on.

When the imaging module 20 satisfies the conditional expression 0.3<|f/f3|<0.7, the third lens L3 provides negative refractive power and reasonably distributes the positive and negative refractive power of the imaging module 20, which can effectively balance and control the refractive power of the imaging module 20. Spherical aberration corrects the aberration of the imaging module 20 , effectively eliminates the chromatic aberration of the imaging module 20 , and reduces the sensitivity of the imaging module 20 , thereby improving the imaging quality of the imaging module 20 .

In some embodiments, the imaging module 20 satisfies the following conditional expression: 1.0<|f/f4|<3.0; where f4 is the focal length of the fourth lens L4, and f is the system focal length of the imaging module 20. That is to say, |f/f4| can be any value within the interval (1.0, 3.0). For example, the value can be 1.747, 1.754, 1.935, 1.937, 2.271, 2.329, 2.343, 2.362, 2.368, 2.464, 2.485 , 2.555, 2.652, 2.685, 2.885, 2.965 and so on.

When the imaging module 20 satisfies the conditional expression 1.0<|f/f4|<3.0, the fourth lens L4 provides positive refractive power, reasonably distributes the positive and negative refractive powers of the imaging module 20, and can effectively balance and control the refractive power of the imaging module 20. Spherical aberration corrects the aberration of the imaging module 20 , effectively eliminates the chromatic aberration of the imaging module 20 , and reduces the sensitivity of the imaging module 20 , thereby improving the imaging quality of the imaging module 20 .

In some embodiments, the imaging module 20 satisfies the following conditional expression: 0.8<|f/f5|<2.5; where f5 is the focal length of the fifth lens L5, and f is the system focal length of the imaging module 20. That is to say, |f/f5| can be any value within the interval (0.8, 2.5). For example, the value can be 0.847, 0.854, 0.935, 1.837, 1.827, 1.959, 1.999, 2.060, 2.180, 2.200, 2.320 , 2.480 and so on.

When the imaging module 20 satisfies the conditional expression 0.8<|f/f5|<2.5, the fifth lens L5 provides negative refractive power and reasonably distributes the positive and negative refractive power of the imaging module 20, which can effectively balance and control the refractive power of the imaging module 20. Spherical aberration corrects the aberration of the imaging module 20 , effectively eliminates the chromatic aberration of the imaging module 20 , and reduces the sensitivity of the imaging module 20 , thereby improving the imaging quality of the imaging module 20 .

In some embodiments, when the imaging module 20 is in the macro mode, the magnification X1 of the object imaged on the image sensor 22 satisfies the following conditional expression: 0.01≤X1≤0.15, where the magnification is the image height of the object. The ratio to the height of the object. As a result, it can not only meet the user's needs for high pixels and miniaturization of the imaging module 20, but also realize the macro shooting function.

In some embodiments, when the imaging module 20 is in the microscopic mode, the magnification X2 of the object imaged on the image sensor 22 satisfies the following conditional expression: 0.30≤X2≤0.80, where the magnification is the image height of the object. The ratio to the height of the object. Therefore, it can not only meet the user's demand for high pixels and miniaturization of the imaging module 20, but also realize the microscopic photography function.

In some embodiments, the imaging module 20 may further include a cover 24 . The cover plate 24 is provided on the side where the object side surface 3 of the first lens L1 is located. In one embodiment, the cover 24 is a protective cover of the imaging module 20 . That is to say, the cover 24 is located at the outermost side of the imaging module 20 and protects the first lens L1 , the diaphragm STO and the third internal lens L1 . The second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, and the image sensor 22 play a protective role, and the protection includes waterproof, dustproof, drop-proof, etc. In other embodiments, a heating element, such as a heating wire, can be embedded inside the cover 24. When the heating wire is energized, the heating wire will generate heat. When the imaging module 20 works in a lower temperature environment, The heat emitted by the heating wire can have a defogging effect, thereby improving the image quality when shooting at lower temperatures.

In some embodiments, the imaging module 20 may further include a filter 26 . The optical filter 26 is disposed between the fifth lens L5 and the image sensor 22 for filtering out light of a specific wavelength. In the embodiment of the present application, the filter 26 is an infrared filter 26 . When the imaging module 20 is used for imaging, the light emitted or reflected by the object enters the imaging module 20 from the object side direction, and passes through the first lens L1, the second lens L2, the third lens L3, and the third lens L3 in sequence. The four lenses L4, the fifth lens L5, and the object side 13 and image side 14 of the infrared filter 26 finally converge on the imaging surface 16 of the image sensor 22. At this time, the diaphragm STO may also be disposed between the fifth lens L5 and the optical filter 26 .

In some embodiments, the imaging module 20 may further include a protective glass 26 . The protective glass 26 is provided between the fifth lens L5 and the image sensor 22 . In the embodiment of the present application, the protective glass 26 is used to protect the image sensor 22 to extend the service life of the imaging module 20 .

In some embodiments, the first to fifth lenses L1 to L5 are plastic lenses or glass lenses. In the first to third embodiments of the present application, the first to fifth lenses L1 to L5 may all be glass lenses. In this way, the imaging module 20 can achieve ultra-thinness while correcting aberrations and solving temperature drift problems through reasonable configuration of lens materials. In the first to third embodiments of the present application, the first to fifth lenses L1 to L5 may all be plastic lenses. In this way, the imaging module 20 can save costs while correcting aberrations through reasonable configuration of lens materials.

In some embodiments, the first lens L1 has an object side 3 and an image side 4 . The second lens L2 has an object side 6 and an image side 7 . The third lens L3 has an object side 8 and an image side 9 . The fourth lens L4 has an object side surface 10 and an image side surface 11 . The fifth lens L5 has an object side surface 12 and an image side surface 13 . At least one surface of the first lens L1 to the fifth lens L5 in the imaging module 20 is an aspheric surface. For example, in the first to third embodiments, the object side surface and the image side surface of the first lens L1 to the fifth lens L5 are both aspherical surfaces. The surface shape of an aspheric surface is determined by the following formula: Among them, Z is the distance sag from the aspherical surface vertex when the aspherical surface is at a height h along the optical axis; h is the distance from any point on the aspherical surface to the optical axis, and c is the vertex curvature (the reciprocal of the radius of curvature, 1/R) , k is the cone coefficient (constant), and Ai is the correction coefficient of the i-th order of the aspheric surface.

In this way, the imaging module 20 can effectively reduce the total length of the imaging module 20 by adjusting the curvature radius and aspherical coefficient of each lens surface, and can effectively correct aberrations and improve imaging quality.

First embodiment

Please refer to FIGS. 1 to 9 . From the object side to the image side, the imaging module 20 of the first embodiment includes a cover plate 24 , a first lens L1 , an aperture STO, a second lens L2 , and a third lens L3 in order. , the fourth lens L4, the fifth lens L5, the filter/protective glass 26, and the image sensor 22.

The first lens L1 has negative refractive power. The second lens L2 has positive refractive power. The third lens L3 has negative refractive power. The fourth lens L4 has positive refractive power. The fifth lens L5 has negative refractive power. The object side and image side of the first lens L1 to the fifth lens L5 are all aspherical surfaces.

The filter 26 is an infrared filter made of glass. It is disposed between the fifth lens L5 and the imaging surface 16 of the image sensor 22 and does not affect the focal length of the imaging module 20 .

In the first embodiment, the focal length of the imaging module 20 is f=1.93mm. In macro mode, for example, when the object distance is 3cm, the system length (Total Track Length, TTL) is 4.23mm, the optical back focus BFL is 0.75mm, and the field of view (Field Of View, FOV) at the maximum image height is 83.5 degrees, aperture value (f-number) is 3.2. In microscopic mode, for example, when the object distance is 5mm, the TTL is 5.11mm, the BFL is 1.63mm, the field of view at the maximum image height is 69.8 degrees, and the aperture value is 3.9.

The imaging module 20 meets the conditions in the following table:

Table 1

Table 2

Second embodiment

Please refer to FIGS. 10 to 18 . From the object side to the image side, the imaging module 20 of the second embodiment includes a cover plate 24 , a first lens L1 , an aperture STO, a second lens L2 , and a third lens L3 in order. , the fourth lens L4, the fifth lens L5, the filter/protective glass 26, and the image sensor 22.

The first lens L1 has negative refractive power. The second lens L2 has positive refractive power. The third lens L3 has negative refractive power. The fourth lens L4 has positive refractive power. The fifth lens L5 has negative refractive power. The object side and image side of the first lens L1 to the fifth lens L5 are all aspherical surfaces.

The filter 26 is an infrared filter made of glass. It is disposed between the fifth lens L5 and the imaging surface 16 of the image sensor 22 and does not affect the focal length of the imaging module 20 .

In the second embodiment, the focal length of the imaging module 20 is f=1.83mm. In macro mode, for example, when the object distance is 3cm, the TTL is 4.19mm, the optical back focus BFL is 0.65mm, the field of view (Field Of View, FOV) at the maximum image height is 86.4 degrees, and the aperture value (f- number) is 3.2. In microscopic mode, for example, when the object distance is 5mm, the TTL is 4.83mm, the BFL is 1.29mm, the field of view at the maximum image height is 73.4 degrees, and the aperture value is 3.9.

The imaging module 20 meets the conditions in the following table:

table 3

Table 4

Third embodiment

Please refer to FIGS. 19 to 27 . From the object side to the image side, the imaging module 20 of the second embodiment includes a cover plate 24 , a first lens L1 , an aperture STO, a second lens L2 , and a third lens L3 in order. , the fourth lens L4, the fifth lens L5, the filter/protective glass 26, and the image sensor 22.

The first lens L1 has negative refractive power. The second lens L2 has positive refractive power. The third lens L3 has negative refractive power. The fourth lens L4 has positive refractive power. The fifth lens L5 has negative refractive power. The object side and image side of the first lens L1 to the fifth lens L5 are all aspherical surfaces.

The filter 26 is an infrared filter made of glass. It is disposed between the fifth lens L5 and the imaging surface 16 of the image sensor 22 and does not affect the focal length of the imaging module 20 .

In the third embodiment, the focal length of the imaging module 20 is f=1.64mm. In macro mode, for example, when the object distance is 3cm, the TTL is 3.73mm, the optical back focus BFL is 0.65mm, the field of view (Field Of View, FOV) at the maximum image height is 94.6 degrees, and the aperture value (f- number) is 3.2. In microscopic mode, for example, when the object distance is 5mm, the TTL is 4.21mm, the BFL is 1.13mm, the field of view at the maximum image height is 83.3 degrees, and the aperture value is 3.9.

The imaging module 20 meets the conditions in the following table:

table 5

Table 6

Referring to FIG. 28 , the electronic device 100 includes a housing 40 and the imaging module 20 of the above embodiment. The imaging module 20 is installed on the housing 40 to acquire images.

Please refer to FIG. 1 , FIG. 10 and FIG. 19 . The electronic device 100 according to the embodiment of the present application can obtain excellent imaging quality while ensuring the miniaturization of the imaging module 20 . In addition, the imaging module 20 uses the diaphragm provided between the first lens L1 and the second lens L2 to expand the size of the relative aperture and increase the amount of light, which is beneficial to obtaining a display image with less noise and better image quality. Furthermore, the imaging module 20 satisfies the conditional expression 0.80<|TTL/Diag|<1.20, and the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, and the fifth lens L5 have reasonable thicknesses. configuration, the image sensor 22 has a reasonable size, so that the ratio between the total optical length of the imaging module and the diagonal length of the image sensor 22 is within a reasonable range, so that the same lens can be passed through without setting two lenses. The imaging module 20 realizes macro functions and microscopic functions at the same time, which not only reduces costs, but also saves space inside the electronic device 100 .

The electronic device 100 in the embodiment of the present application includes, but is not limited to, a smartphone, a tablet computer, a notebook computer, a personal computer (PC), an e-book reader, a portable multimedia player (PMP), a mobile phone, and a video phone. Computers, cameras, digital still cameras, game consoles, mobile medical devices, smart watches, wearable devices and other information terminal equipment or home appliances with camera functions, etc.

In the description of this specification, reference is made to terms such as "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples." The description of means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include at least one of the described features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present application. Those of ordinary skill in the art can make modifications to the above-mentioned embodiments within the scope of the present application. The embodiments are subject to changes, modifications, substitutions and variations, and the scope of the application is defined by the claims and their equivalents.

Claims (9)

1. An imaging module, characterized in that, from the object side to the image side, it includes: a first lens, the first lens having negative refractive power; aperture; a second lens, the second lens having positive refractive power; a third lens, the third lens having negative refractive power; a fourth lens, the fourth lens having positive refractive power; a fifth lens having negative refractive power; and image sensor; The imaging module satisfies the following conditional expression: 0.8<|TTL/Diag|<1.2; Wherein, TTL is the axial distance from the object side of the first lens to the imaging surface of the imaging module, and Diag is the diagonal length of the image sensor; When the imaging module is in macro mode, the magnification X1 of the object imaged on the image sensor satisfies the following conditional expression: 0.01≤X1≤0.15, wherein the magnification is the ratio of the image height of the object to the object height; When the imaging module is in the microscope mode, the magnification X2 of the object imaged on the image sensor satisfies the following conditional expression: 0.30≤X2≤0.80, wherein the magnification is the ratio of the image height of the object to the object height. 2. The imaging module according to claim 1, characterized in that the imaging module also satisfies the following conditional expression: 0.3<|f/f1|<0.6; where f1 is the focal length of the first lens, and f is the focal length of the imaging module. 3. The imaging module according to claim 1, characterized in that the imaging module also satisfies the following conditional expression: 0.7<|f/f2|<1.5; where f2 is the focal length of the second lens, and f is the focal length of the imaging module. 4. The imaging module according to claim 1, characterized in that the imaging module also satisfies the following conditional expression: 0.3<|f/f3|<0.7; where, f3 is the focal length of the third lens, and f is the focal length of the imaging module. 5. The imaging module according to claim 1, characterized in that the imaging module further satisfies the following conditional expression: 1.0<|f/f4|<3.0; where, f4 is the focal length of the fourth lens, and f is the focal length of the imaging module. 6. The imaging module according to claim 1, characterized in that the imaging module further satisfies the following conditional expression: 0.8<|f/f5|<2.5; where f5 is the focal length of the fourth lens, and f is the focal length of the imaging module. 7. The imaging module according to claim 1, characterized in that: among the first lens, the second lens, the third lens, the fourth lens and the fifth lens Both the object side and the image side are aspherical. 8. The imaging module according to claim 1, further comprising: An optical filter located between the fifth lens and the image sensor for filtering out light of a specific wavelength; or Protective glass, the protective glass is located between the fifth lens and the image sensor, and is used to protect the image sensor. 9. An electronic device, characterized in that the electronic device includes: shell; and The imaging module according to any one of claims 1 to 8, which is combined with the housing.