Camera module and electronic equipment

Abstract

The embodiment of the invention provides a camera module and electronic equipment, and the camera module comprises a first prism, a second prism, a lens, and a photosensitive element. The first prism comprises a first side surface, the first side surface comprises a first light-transmitting area and a second light-transmitting area, and the second prism comprises a second side surface and a third side surface; the lens is opposite to the first light-transmitting area, the second side surface is opposite to the second light-transmitting area, and the photosensitive element is opposite to the third side surface of the second prism; incident light penetrating through the lens enters the first prism through the first light-transmitting area, enters the second prism through the second light-transmitting area and the second side face after being subjected to at least two times of total reflection in the first prism, and enters the photosensitive element through the third side face after being subjected to total reflection in the second prism.

Description

Technical Field

[0001] The present application relates to the technical field of camera module design, and in particular to a camera module and an electronic device. Background Art

[0002] As mobile phones and other electronic devices become more and more popular in consumers' lives, consumers are increasingly demanding the performance of camera modules in electronic devices. For example, some mobile phones are equipped with telephoto camera modules to meet the camera needs of some special scenes.

[0003] In the related art, a telephoto camera module includes a prism, a lens, and a photosensitive element. The prism is used to deflect the incident light by 90 degrees and then reflect it to the lens. Thus, the focal length of the camera module is increased by making the photosensitive element and the lens separated by a larger distance. This will make the size of the camera module along the optical axis of the lens too large, which is not conducive to the thinness of electronic equipment. Summary of the invention

[0004] The embodiments of the present application provide a camera module and an electronic device to solve the problem of how to reduce the size of the camera module along the optical axis direction of the lens.

[0005] In order to solve the above technical problems, this application is implemented as follows: In a first aspect, an embodiment of the present application provides a camera module.

[0006] The camera module provided in the embodiment of the present application includes: a first prism, a second prism, a lens and a photosensitive element; the first prism includes a first side surface, the first side surface includes a first light-transmitting area and a second light-transmitting area, and the second prism includes a second side surface and a third side surface; the lens is opposite to the first light-transmitting area, the second side surface is opposite to the second light-transmitting area, and the photosensitive element is opposite to the third side surface of the second prism; the incident light passing through the lens enters the first prism through the first light-transmitting area, and after at least two total reflections in the first prism, enters the second prism through the second light-transmitting area and the second side surface, and after total reflection in the second prism, enters the photosensitive element through the third side surface.

[0007] Optionally, the first prism also includes a fourth side and a fifth side, and the first side also includes a first reflection area; the incident light passing through the first light-transmitting area is totally reflected on the fourth side, the first reflection area and the fifth side in sequence, and then enters the second prism through the second light-transmitting area and the second side.

[0008] Optionally, the angle between the fourth side surface and the first side surface is equal to the angle between the fifth side surface and the first side surface; the angle between the fourth side surface and the first side surface ranges from 25 degrees to 35 degrees.

[0009] Optionally, the first prism also includes a sixth side surface, the sixth side surface is opposite to the first side surface, and the first side surface also includes a second reflection area; the incident light reflected by the first reflection area is emitted to the fifth side surface after being totally reflected by the sixth side surface and the second reflection area in sequence.

[0010] Optionally, the sixth side surface is parallel to the first side surface.

[0011] Optionally, the second prism further includes a seventh side surface; the incident light passing through the second side surface is totally reflected by the third side surface and the seventh side surface in sequence, and then passes through the third side surface toward the photosensitive element.

[0012] Optionally, the second prism also includes a seventh side, and the photosensitive element is located on the side of the second prism away from the lens; the incident light passing through the second side is totally reflected on the seventh side and the second side in sequence, and then passes through the third side toward the photosensitive element.

[0013] Optionally, the second prism further includes a seventh side surface; the incident light passing through the second side surface is totally reflected on the seventh side surface and the second side surface in sequence, and then passes through the third side surface toward the photosensitive element.

[0014] Optionally, the optical axis of the lens is perpendicular to the first side surface; the second side surface is parallel to the first side surface, and the photosensitive element is parallel to the third side surface.

[0015] In a second aspect, an embodiment of the present application provides an electronic device.

[0016] The electronic device provided in the embodiments of the present application includes any camera module provided in the embodiments of the present application.

[0017] Optionally, the electronic device also includes a frame, and the camera module is connected to the frame.

[0018] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects: In an embodiment of the present application, when the camera module is in operation, incident light can pass through the lens toward the first light-transmitting area, and then pass through the first light-transmitting area to enter the first prism. The incident light entering the first prism can undergo at least two total reflections in the first prism, then pass through the second light-transmitting area coplanar with the first light-transmitting area, and then pass through the second side surface to enter the second prism. The incident light entering the second prism can undergo total reflections in the second prism, and then pass through the third side surface to enter the photosensitive element.

[0019] It can be seen that by adopting the solution provided in the embodiment of the present application, the distance of the optical path between the lens and the photosensitive element can be increased by the way that the incident light is totally reflected multiple times in the first prism and the second prism, thereby achieving the effect of increasing the focal length of the camera module. In addition, since the photosensitive element and the lens are located on the same side of the first side surface of the first prism, compared with the solution in the related art where the photosensitive element is directly opposite to the lens, it can play a role in reducing the size of the camera module along the optical axis direction of the lens.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of a camera module provided in an embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the optical path of the camera module shown in FIG. Figure 3 A schematic diagram of a lens and a third prism of a camera module provided in an embodiment of the present application; Figure 4 for Figure 1 A table showing parameters such as the radius of curvature of each optical element of the camera module shown in FIG. Figure 5 for Figure 1 A table of cone constants and aspheric coefficients of each lens of the camera module shown in FIG. Figure 6 A schematic diagram of another camera module provided in an embodiment of the present application; Figure 7 for Figure 6Schematic diagram of the optical path of the camera module shown in FIG. Figure 8 for Figure 6 A table showing parameters such as the radius of curvature of each optical element of the camera module shown in FIG. Fig. 9 for Figure 6 A table of cone constants and aspheric coefficients of each lens of the camera module shown in FIG. Fig.10 A schematic diagram of another camera module provided in an embodiment of the present application; Fig.11 for Fig.10 Schematic diagram of the optical path of the camera module shown in FIG. Fig.12 for Fig.10 A table showing parameters such as the radius of curvature of each optical element of the camera module shown in FIG. Fig.13 for Fig.10 A table of cone constants and aspheric coefficients of each lens of the camera module is shown in FIG.

[0023] Description of reference numerals: 10- Camera module; 11-first prism; 111-first side surface; 111a-first light-transmitting area; 111b-second light-transmitting area; 111c-first reflection area; 111d-second reflection area; 112-fourth side surface; 113-fifth side surface; 114-sixth side surface; 12-second prism; 121-second side surface; 121a-fourth light-transmitting area; 121b-fourth reflection area; 122-third side surface; 122a-third reflection area; 122b-third light-transmitting area; 123-seventh side surface; 13-lens; 131-first lens; 1311-first surface; 1312-second surface; 132-second lens; 1321-third surface; 1322-fourth surface; 133-third lens; 1331-fifth surface; 1332-sixth surface; 134-focus motor; 13a-optical axis of the lens; 14-Photosensitive element; 15-third prism; 151-eighth side surface; 152-ninth side surface; 153-tenth side surface. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0025] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article.

[0027] Furthermore, it is required that the present application be understood not only by the actual terms used but also by the meanings connoted by each term.

[0028] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0029] The present application embodiment provides a camera module. Figures 1 to 13 The camera module 10 provided in the embodiment of the present application includes: a first prism 11, a second prism 12, a lens 13 and a photosensitive element 14. Exemplarily, the photosensitive element 14 can be a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0030] The first prism 11 includes a first side surface 111, and the first side surface 111 includes a first light-transmitting area 111a and a second light-transmitting area 111b. The second prism 12 includes a second side surface 121 and a third side surface 122. The lens 13 is opposite to the first light-transmitting area 111a, so that the incident light emitted by the lens 13 can enter the first prism 11 through the first light-transmitting area 111a. The second side surface 121 is opposite to the second light-transmitting area 111b. In this way, the incident light entering the first prism 11 can exit the first prism 11 through the second light-transmitting area 111b, and enter the second prism 12 through the second side surface 121. The photosensitive element 14 is opposite to the third side surface 122 of the second prism 12. In this way, the incident light entering the second prism 12 can be emitted toward the photosensitive element 14 through the third side surface 122. It should be noted that the "incident light" described here can refer to the light emitted from the external environment into the camera module 10.

[0031] refer to Figure 1 , Figure 6 or Fig.10 In the embodiment of the present application, the incident light passing through the lens 13 can enter the first prism 11 through the first light-transmitting area 111a, and after at least two total reflections in the first prism 11, enter the second prism 12 through the second light-transmitting area 111b and the second side surface 121, and after total reflection in the second prism 12, enter the photosensitive element 14 through the third side surface 122.

[0032] In this way, in the embodiment of the present application, when the camera module 10 is in working state, the incident light can be incident on the first light-transmitting area 111a through the lens 13, and enter the first prism 11 through the first light-transmitting area 111a. The incident light incident on the first prism 11 can be totally reflected at least twice in the first prism 11, and then be incident on the second side surface 121 of the second prism 12 through the second light-transmitting area 111b coplanar with the first light-transmitting area 111a, and enter the second prism 12 through the second side surface 121. The incident light incident on the second prism 12 can be totally reflected in the second prism 12, and then be incident on the photosensitive element 14 through the third side surface 122.

[0033] It can be seen that by adopting the solution provided in the embodiment of the present application, the distance of the optical path between the lens 13 and the photosensitive element 14 can be increased by causing the incident light to be totally reflected multiple times in the first prism 11 and the second prism 12, thereby achieving the effect of increasing the focal length of the camera module 10. In addition, since the photosensitive element 14 and the lens 13 are located on the same side of the first side surface 111 of the first prism 11, compared with the solution in the related art in which the photosensitive element is directly opposite to the lens 13, the size of the camera module 10 along the optical axis direction of the lens 13 can be reduced.

[0034] In order to facilitate those skilled in the art to better implement the solutions provided in the embodiments of the present application, more detailed examples are provided below for reference by those skilled in the art.

[0035] refer to Figure 1 , Figure 6 or Fig.10 In some embodiments, the optical axis 13a of the lens 13 is perpendicular to the first side surface 111. The second side surface 121 is parallel to the first side surface 111. The photosensitive element 14 is parallel to the third side surface 122. In this way, the loss of the incident light during the propagation process can be reduced.

[0036] refer to Figure 1 , Figure 6 or Fig.10 In some embodiments, the first prism 11 further includes a fourth side surface 112 and a fifth side surface 113. The first side surface 111 further includes a first reflection area 111c. The incident light passing through the first light-transmitting area 111a can be totally reflected in the fourth side surface 112, the first reflection area 111c and the fifth side surface 113 in sequence, and then enter the second prism 12 through the second light-transmitting area 111b and the second side surface 121. In this way, the focal length of the camera module 10 can be increased by "bending" the optical path.

[0037] In some embodiments, the angle between the fourth side surface 112 and the first side surface 111 is equal to the angle between the fifth side surface 113 and the first side surface 111. The angle between the fourth side surface 112 and the first side surface 111 ranges from 25 degrees to 35 degrees. For example, the angle between the fourth side surface 112 and the first side surface 111 is 25 degrees, 30 degrees, 35 degrees, etc. In this way, the incident light will not be transmitted during the reflection process of each side surface of the first prism 11.

[0038] refer to Fig.10 In some embodiments, the first prism 11 also includes a sixth side surface 114. The sixth side surface 114 is opposite to the first side surface 111. The first side surface 111 also includes a second reflection area 111d. The incident light reflected by the first reflection area 111c can be emitted to the fifth side surface 113 after being totally reflected on the sixth side surface 114 and the second reflection area 111d in turn. Furthermore, after the incident light is totally reflected on the fifth side surface 113, it is emitted into the second prism 12 through the second light-transmitting area 111b and the second side surface 121. In this way, the focal length of the camera module 10 can be further increased by "bending" the optical path. Exemplarily, the sixth side surface 114 is parallel to the first side surface 111.

[0039] refer to Figure 2 , Figure 7 or Fig.11In some embodiments, the lens 13 includes a first lens 131, a second lens 132, and a third lens 133 that are sequentially spaced apart. Exemplarily, the first lens 131 and the third lens 133 are convex lenses, and the second lens 132 is a concave lens. The first lens 131 includes a first surface 1311 and a second surface 1312 that are opposite to each other. The second lens 132 includes a third surface 1321 and a fourth surface 1322 that are opposite to each other. The third lens 133 includes a fifth surface 1331 and a sixth surface 1332 that are opposite to each other. The incident light may sequentially pass through the first surface 1311, the second surface 1312, the third surface 1321, the fourth surface 1322, the fifth surface 1331, and the sixth surface 1332, and then be emitted to the first light-transmitting area 111a. In addition, referring to Figure 1 In some embodiments, the lens 13 further includes a focus motor 134 .

[0040] In some embodiments, the first surface 1311, the second surface 1312, the third surface 1321, the fourth surface 1322, the fifth surface 1331 and the sixth surface 1332 are aspherical surfaces, and the surface parameters satisfy the following formula:

[0041] Among them, Z is the sag of the surface parallel to the optical axis of each lens, ρ is the curvature of the surface, which is the inverse of the radius of curvature, K is the cone constant, and A, B, C, D, E, F, G and H are aspheric coefficients. Generally speaking, the surface of the aspheric surface can be determined by giving the values ​​of A, B, C, D, E, F and G, and the aspheric coefficients such as H can generally be zero.

[0042] refer to Figure 3 In some embodiments, the camera module 10 further includes a third prism 15. The third prism 15 is disposed on the side of the lens 13 away from the first prism 11. The third prism 15 includes an eighth side surface 151, a ninth side surface 152, and a tenth side surface 153. The incident light can enter the third prism 15 through the eighth side surface 151, and after being totally reflected by the ninth side surface 152, it can be emitted toward the lens 13 through the tenth side surface 153. Figure 1 , the incident light directed to the lens 13 can be directed to the photosensitive element 14 after passing through the first prism 11 and the second prism 12 in sequence. In addition, in some embodiments, the camera module 10 further includes an anti-shake motor, which is drivingly connected to the third prism 15. In this way, the camera module 10 has an anti-shake function.

[0043] In the above embodiment, the optical path of the incident light entering the first prism 11 within the first prism 11 is mainly introduced. Here, the optical path of the incident light entering the second prism 12 within the second prism 12 is further introduced.

[0044] refer to Figure 1 and Figure 2 In some embodiments, the second prism 12 further includes a seventh side surface 123. The incident light passing through the second side surface 121 can be totally reflected by the third side surface 122 and the seventh side surface 123 in sequence, and then pass through the third side surface 122 to be emitted to the photosensitive element 14.

[0045] Exemplarily, the third side surface 122 includes a third reflective area 122a and a third light-transmitting area 122b. The photosensitive element 14 is opposite to the third light-transmitting area 122b. The incident light passing through the second side surface 121 can be totally reflected in the third reflective area 122a and the seventh side surface 123 in sequence, and then pass through the third light-transmitting area 122b to the photosensitive element 14.

[0046] It should be noted that the third reflective area 122a and the third light-transmitting area 122b may partially overlap. For example, the area illuminated by the incident light from the second side surface 121 to the third side surface 122 may be regarded as the third reflective area 122a. The area illuminated by the incident light from the seventh side surface 123 to the third side surface 122 may be regarded as the third light-transmitting area 122b.

[0047] Exemplarily, the second side surface 121 is perpendicular to the seventh side surface 123 , the included angle between the second side surface 121 and the third side surface 122 is 60 degrees, and the included angle between the second side surface 121 and the seventh side surface 123 is 30 degrees.

[0048] refer to Figures 1 to 5 When the effective focal length (EFL) of the camera module 10 is 40 mm, the F-number (Fno.) of the lens is 4.0, and the field of view (FOV) is 12 degrees, the parameters of the optical components of the camera module 10 are shown in FIG. Figure 4 and Figure 5 .

[0049] It should be noted that Figure 4 The thickness of the eighth side surface 151 is 3 mm, which means that a first straight line is drawn along the optical axis of the eighth side surface 151, and the distance between the two intersections formed by the first straight line and the eighth side surface 151 and the ninth side surface 152. Similarly, Figure 4 The thickness of the first light-transmitting area 111 a being 4 mm means that a second straight line is drawn along the optical axis 13 a of the lens 13 , and the distance between two intersections formed by the second straight line and the first light-transmitting area 111 a and the fourth side surface 112 . Figure 4 The thickness of the fourth side surface 112 being 8 mm means that the second straight line is transformed into a third straight line by axisymmetric transformation with the normal line of the fourth side surface 112 as the axis of symmetry, and the distance between the two intersection points formed by the third straight line, the fourth side surface 112 and the first reflection area 111c. Figure 5The "E" shown in the figure represents a power of 10. For example, "2.74E-05" represents 2.74 times 10 to the power of -5. This will not be explained one by one in the following.

[0050] refer to Figure 6 and Figure 7 In some embodiments, the second prism 12 further includes a seventh side surface 123, and the photosensitive element 14 is located on the side of the second prism 12 away from the lens 13. The incident light passing through the second side surface 121 can be totally reflected on the seventh side surface 123 and the second side surface 121 in sequence, and then pass through the third side surface 122 to the photosensitive element 14. In this way, the second prism 12 can be provided between the photosensitive element 14 and the lens 13 to prevent the photosensitive element 14 from being too close to the lens 13, so that the heat generated by the focus motor 134 of the lens 13 interferes with the photosensitive element 14.

[0051] Exemplarily, the second side surface 121 includes a fourth light-transmitting area 121a and a fourth reflective area 121b. The fourth light-transmitting area 121a is opposite to the second light-transmitting area 111b. The incident light passing through the fourth light-transmitting area 121a can be totally reflected in the seventh side surface 123 and the fourth reflective area 121b in sequence, and then pass through the third side surface 122 to the photosensitive element 14.

[0052] Exemplarily, the third side surface 122 is perpendicular to the seventh side surface 123 , the included angle between the second side surface 121 and the seventh side surface 123 is 30 degrees, and the included angle between the second side surface 121 and the third side surface 122 is 60 degrees.

[0053] refer to Figures 6 to 9 , Figure 6 The parameters of the optical elements of the camera module 10 shown in Figure 8 and Fig. 9 .

[0054] refer to Figure 10 to Figure 11 In some embodiments, the second prism 12 further includes a seventh side surface 123. The incident light passing through the second side surface 121 can be totally reflected on the seventh side surface 123 and the second side surface 121 in sequence, and then pass through the third side surface 122 to be emitted to the photosensitive element 14.

[0055] Exemplarily, the second side surface 121 includes a fourth light-transmitting area 121a and a fourth reflective area 121b. The fourth light-transmitting area 121a is opposite to the second light-transmitting area 111b. The incident light passing through the fourth light-transmitting area 121a can be totally reflected in the seventh side surface 123 and the fourth reflective area 121b in sequence, and then pass through the third side surface 122 to the photosensitive element 14.

[0056] Exemplarily, the angle between the fourth side surface 112 and the first side surface 111 is 25 degrees. The angle between the fifth side surface 113 and the first side surface 111 is 25 degrees. The third side surface 122 is perpendicular to the seventh side surface 123, the angle between the second side surface 121 and the seventh side surface 123 is 33 degrees, and the angle between the second side surface 121 and the third side surface 122 is 57 degrees.

[0057] refer to Figures 10 to 13 When the effective focal length of the camera module 10 is 50 mm, the lens F number is 5.5, and the field of view angle is 8 degrees, the parameters of the optical components of the camera module 10 are shown in Fig.12 and Fig.13 .

[0058] It should be noted that Figure 1 and Figure 6 The figure shows the situation where the incident light is totally reflected three times in the first prism 11. Fig.10 FIG. 4 shows a case where the incident light undergoes five total reflections in the first prism 11. Figure 1 When the angle between the fourth side surface 112 and the first side surface 111 is 45 degrees, and the angle between the fifth side surface 113 and the first side surface 111 is 45 degrees, the incident light is totally reflected twice in the first prism 11 and then emitted. Fig.10 When the sixth side surface 114 is longer in the vertical direction, the incident light can be totally reflected more times in the first prism 11. Of course, it can be understood that when the sixth side surface 114 is longer in the vertical direction, the size of the camera module 10 will be too large. Therefore, when the space for accommodating the camera module 10 inside the electronic device is small, the size of the sixth side surface 114 in the vertical direction can be appropriately reduced.

[0059] The embodiment of the present application provides an electronic device. The electronic device provided by the embodiment of the present application includes any one of the camera modules 10 provided by the embodiment of the present application. Exemplarily, the electronic device may be a mobile phone or a tablet computer.

[0060] Furthermore, the electronic device further includes a frame. The frame is a connection carrier for various components of the electronic device. For example, when the electronic device is a mobile phone, the frame is a middle frame of the mobile phone. Furthermore, when the electronic device includes a frame, the camera module 10 can be connected to the frame. For example, the camera module 10 can be directly connected to the frame; or, the camera module 10 can be indirectly connected to the frame through a bracket.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the embodiments of the present application, and the scope of the embodiments of the present application is defined by the appended claims and their equivalents.

Claims

1. A camera module (10), characterized in that: include: A first prism (11), a second prism (12), a lens (13), and a photosensitive element (14); The first prism (11) comprises a first side surface (111), the first side surface (111) comprises a first light-transmitting area (111a) and a second light-transmitting area (111b), and the second prism (12) comprises a second side surface (121) and a third side surface (122); The lens (13) is opposite to the first light-transmitting area (111a), the second side surface (121) is opposite to the second light-transmitting area (111b), and the photosensitive element (14) is opposite to the third side surface (122) of the second prism (12); Incident light passing through the lens (13) enters the first prism (11) through the first light-transmitting area (111a), and after being totally reflected at least twice in the first prism (11), enters the second prism (12) through the second light-transmitting area (111b) and the second side surface (121), and after being totally reflected in the second prism (12), enters the photosensitive element (14) through the third side surface (122).

2. The camera module (10) according to claim 1, characterized in that: The first prism (11) further includes a fourth side surface (112) and a fifth side surface (113); the first side surface (111) further includes a first reflection area (111c); Incident light passing through the first light-transmitting area (111a) is totally reflected in sequence on the fourth side surface (112), the first reflection area (111c) and the fifth side surface (113), and then passes through the second light-transmitting area (111b) and the second side surface (121) to enter the second prism (12).

3. The camera module (10) according to claim 2, characterized in that: The included angle between the fourth side surface (112) and the first side surface (111) is equal to the included angle between the fifth side surface (113) and the first side surface (111); The included angle between the fourth side surface (112) and the first side surface (111) ranges from 25 degrees to 35 degrees.

4. The camera module (10) according to claim 2, characterized in that: The first prism (11) further comprises a sixth side surface (114), the sixth side surface (114) being opposite to the first side surface (111), and the first side surface (111) further comprises a second reflection area (111d); The incident light reflected by the first reflection area (111c) is emitted toward the fifth side surface (113) after being totally reflected by the sixth side surface (114) and the second reflection area (111d) in sequence.

5. The camera module (10) according to claim 4, characterized in that: The sixth side surface (114) is parallel to the first side surface (111).

6. The camera module (10) according to claim 1, characterized in that: The second prism (12) further comprises a seventh side surface (123); incident light passing through the second side surface (121) is totally reflected by the third side surface (122) and the seventh side surface (123) in sequence, and then passes through the third side surface (122) to be emitted to the photosensitive element (14).

7. The camera module (10) according to claim 1, characterized in that: The second prism (12) further comprises a seventh side surface (123), and the photosensitive element (14) is located on a side of the second prism (12) facing away from the lens (13); Incident light passing through the second side surface (121) is totally reflected by the seventh side surface (123) and the second side surface (121) in sequence, and then passes through the third side surface (122) to be emitted toward the photosensitive element (14).

8. The camera module (10) according to claim 1, characterized in that: The second prism (12) further comprises a seventh side surface (123); incident light passing through the second side surface (121) is totally reflected on the seventh side surface (123) and the second side surface (121) in sequence, and then passes through the third side surface (122) toward the photosensitive element (14).

9. The camera module (10) according to claim 1, characterized in that: The optical axis (13a) of the lens (13) is perpendicular to the first side surface (111); the second side surface (121) is parallel to the first side surface (111); and the photosensitive element (14) is parallel to the third side surface (122).

10. An electronic device, characterized in that: It comprises a frame and a camera module (10) as claimed in any one of claims 1 to 9, wherein the camera module (10) is connected to the frame.

Images