Camera module and electronic device

Abstract

A camera module and an electronic device. The camera module comprises: a first lens assembly (10), a second lens assembly (20) and a photosensitive chip (30), wherein the first lens assembly (10) comprises a light-incident surface (11), a reflecting surface (12) and a light-emergent surface (13), the orientation of the light-incident surface (11) being perpendicular to that of the light-emergent surface (13), and the reflecting surface (12) being configured to reflect light incident from the light-incident surface (11) to the light-emergent surface (13); and the second lens assembly (20) is located between the light-emergent surface (13) and the photosensitive chip (30), and the optical axis of the light-emergent surface (13) coincides with that of the second lens assembly (20). The light-incident surface (11) is a convex surface having a positive focal power, and the light-emergent surface (13) is a concave surface having a negative focal power.

Description

Camera modules and electronic equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410222092.1 filed in China on February 28, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the technical field of electronic products, and specifically relates to a camera module and electronic equipment. Background Art

[0004] Telephoto lens solutions in related technologies typically employ a clustered periscope-type optical architecture, which not only provides anti-shake effects but also enables autofocus. However, during the assembly of the optical architecture, particularly the light-entering lens and the first lens assembly, deviations in the assembly can easily lead to significant degradation of optical performance, thereby reducing the imaging quality of the entire optical structure. Summary of the Invention

[0005] The present application aims to provide a camera module and an electronic device that can solve the problem of poor imaging effect of the camera module in the related art.

[0006] In a first aspect, an embodiment of the present application provides a camera module, comprising: a first lens assembly, a second lens assembly, and a photosensitive chip, wherein the first lens assembly comprises a light incident surface, a reflective surface, and a light emitting surface, wherein the orientation of the light incident surface is perpendicular to the orientation of the light emitting surface, and the reflective surface is configured to reflect light incident from the light incident surface to the light emitting surface, and the second lens assembly is located between the light emitting surface and the photosensitive chip, and the optical axis of the light emitting surface coincides with the optical axis of the second lens assembly;

[0007] The light incident surface is a convex surface with positive optical power, and the light emitting surface is a concave surface with negative optical power.

[0008] In a second aspect, an embodiment of the present application proposes an electronic device, comprising the camera module as described in the first aspect.

[0009] In an embodiment of the present application, the light incident surface of the first lens assembly is set to a convex surface so that the light incident surface of the first lens assembly has the effect of converging light, and then refracts the light to the direction of the light exiting surface through the reflecting surface. Moreover, since the light exiting surface is a concave surface and has the effect of diverging light, the light incident on the first lens assembly can be emitted from the light exiting surface and, after being processed by the second lens assembly, be emitted to the photosensitive chip, thereby realizing the imaging function of the camera module.

[0010] Moreover, compared with the conventional grouped periscope separation optical architecture which requires a light incident lens to be arranged on the light incident side of the first lens assembly, in the present application, the light incident surface of the first lens assembly is designed to be a convex surface, and the light exit surface of the first lens assembly is designed to be a concave surface, that is, by combining the light converging function of the light incident lens and the light reflecting function of the first lens assembly to form an integrated first lens assembly, which can avoid the assembly deviation problem caused by the assembly of the light incident lens and the first lens assembly, that is, avoid the problem of optical performance attenuation caused by the assembly deviation, and improve the imaging effect of the camera module.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0013] FIG1 is a schematic diagram of the structure of a camera module according to an embodiment of the present application;

[0014] FIG2 is a schematic structural diagram of the first lens assembly shown in FIG1 ;

[0015] FIG3 is a schematic structural diagram of the second lens assembly shown in FIG1 ;

[0016] FIG4 is a second structural diagram of a camera module provided in an embodiment of the present application;

[0017] FIG5 is a schematic structural diagram of the filter structure shown in FIG4 ;

[0018] FIG6 is one of the schematic diagrams of lens chromatic aberration provided in an embodiment of the present application;

[0019] FIG7 is one of the lens distortion diagrams provided in an embodiment of the present application;

[0020] FIG8 is a second schematic diagram of lens chromatic aberration provided in an embodiment of the present application;

[0021] FIG9 is a second schematic diagram of lens distortion provided in an embodiment of the present application;

[0022] FIG10 is a third schematic diagram of lens chromatic aberration provided in an embodiment of the present application;

[0023] FIG11 is a third schematic diagram of lens distortion provided in an embodiment of the present application;

[0024] FIG12 is a fourth schematic diagram of lens chromatic aberration provided in an embodiment of the present application;

[0025] FIG13 is a fourth schematic diagram of lens distortion provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below. 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 having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0027] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0030] As shown in Figures 1 to 4, an embodiment of the present application provides a camera module, including a first lens assembly 10, a second lens assembly 20 and a photosensitive chip 30. The first lens assembly 10 includes a light incident surface 11, a reflective surface 12 and a light emitting surface 13. The orientation of the light incident surface 11 is perpendicular to the orientation of the light emitting surface 13, and the reflective surface 12 is used to reflect the light incident from the light incident surface 11 to the light emitting surface 13. The second lens assembly 20 is located between the light emitting surface 13 and the photosensitive chip 30, and the optical axis of the light emitting surface 13 coincides with the optical axis of the second lens assembly 20; wherein, the light incident surface 11 is a convex surface, the light emitting surface 13 is a concave surface, and the first lens assembly 10 is an integrated structure and has an anti-shake function.

[0031] The above-mentioned light incident surface 11 is a convex surface, which can be understood as the light incident surface 11 of the first lens assembly 10 is an optical surface with positive optical power; correspondingly, the above-mentioned light exit surface 13 is a concave surface, which can be understood as the light exit surface 13 of the first lens assembly 10 is an optical surface with negative optical power.

[0032] The above-mentioned first lens assembly 10 can be a prism with an integrated structure including the above-mentioned light incident surface 11, the above-mentioned reflective surface 12 and the above-mentioned light exit surface 13, or it can be a lens assembly with an integrated structure consisting of a light incident lens including the above-mentioned light incident surface 11, a prism including the above-mentioned reflective surface 12 and a light exit lens including the above-mentioned light exit surface 13.

[0033] The second lens assembly 20 may be composed of a plurality of lenses and may be moved in a direction away from the photosensitive chip 30 during the camera process of the camera module, thereby realizing the autofocus function of the camera module.

[0034] For example, the second lens assembly 20 may include a plurality of lenses distributed in sequence along the optical axis direction of the light-emitting surface 13, and the number of the plurality of lenses may be 3, 4 or 5, etc. The number of lenses and parameters such as the refractive index of the lenses may be set based on actual needs.

[0035] The above-mentioned photosensitive chip 30 can be understood as a light receiver of the camera module. The object light can be imaged on the photosensitive chip 30 after being refracted by the first lens assembly 10 and the second lens assembly 20, thereby realizing the imaging function of the camera module.

[0036] In this embodiment, the light incident surface 11 of the first lens assembly 10 is set to a convex surface so that the light incident surface 11 of the first lens assembly 10 has the effect of converging light, and then refracts the light to the position of the light exit surface 13 through the reflecting surface 12. Since the light exit surface 13 is a concave surface and has the effect of diverging light, the light incident on the first lens assembly 10 can be emitted from the light exit surface 13, and after being processed by the second lens assembly 20, it is emitted to the photosensitive chip 30, thereby realizing the imaging function of the camera module.

[0037] Moreover, compared with the conventional grouped periscope separation optical architecture which requires a light incident lens to be arranged on the light incident side of the first lens assembly, in the present application, the light incident surface 11 of the first lens assembly 10 is designed to be a convex surface, and the light exit surface 13 of the first lens assembly 10 is designed to be a concave surface, that is, by combining the light converging function of the light incident lens and the light reflecting function of the first lens assembly, that is, forming an integrated first lens assembly 10, which can avoid the assembly deviation problem caused by the assembly of the light incident lens and the first lens assembly, that is, avoid the problem of optical performance attenuation caused by the assembly deviation, and improve the imaging effect of the camera module.

[0038] Furthermore, by designing the light incident surface 11 of the first lens assembly 10 as a convex surface and the light exit surface 13 of the first lens assembly 10 as a concave surface, not only can the large aperture effect of the camera module be achieved, but also the miniaturization design requirements of the camera module can be met.

[0039] In addition, when the camera module is applied to electronic devices such as mobile phones, the height of the convex hull of the entire device can be reduced, thereby improving the appearance of the electronic device.

[0040] In one embodiment, the light incident surface 11 of the first lens assembly 10 can be processed into a convex surface so as to have the function of converging light, and the light exit surface 13 of the first lens assembly 10 can be processed into a concave surface so as to have the function of diverging light.

[0041] In another embodiment, the first lens assembly 10 includes a first lens assembly body, a light input structure and a light output structure, the first lens assembly body includes the above-mentioned reflective surface 12, the light input structure includes the above-mentioned light input surface 11, the light output structure includes the above-mentioned light output surface 13, and the light input structure is arranged on the light input side of the first lens assembly body, and the light output structure is arranged on the light output side of the first lens assembly body.

[0042] In one embodiment, the light incident structure and the first lens assembly body may be an integrated structure to reduce assembly deviation between the light incident structure and the first lens assembly body.

[0043] In one embodiment, the light incident structure may be integrated with the first lens assembly body by gluing or other means to reduce assembly deviation between the light incident structure and the first lens assembly body.

[0044] In one embodiment, the light-emitting structure and the first lens assembly body can be an integrated structure, or can be fixed on the light-emitting side of the first lens assembly body as an independent structure, or fixed to the first lens assembly body in other ways to compensate for the performance loss of the first lens assembly 10 due to shaking, thereby improving the anti-shake effect of the camera module.

[0045] In one embodiment, the first lens assembly 10 can be understood as an anti-shake module of a camera module, and the second lens assembly 20 can be understood as a focus module of the camera module.

[0046] In one embodiment, the second lens assembly 20 includes a first lens 21, a second lens 22, a third lens 23, a fourth lens 24, and a fifth lens 25, which are sequentially distributed along the optical axis direction of the light exit surface 13, and the first lens 21 is located between the light exit surface 13 and the second lens 22, that is, the first lens 21 is the lens of the second lens assembly 20 close to the first lens assembly 10;

[0047] Among them, the side of the first lens 21 facing away from the photosensitive chip 30 is convex, and the side facing the photosensitive chip 30 is concave; the side of the second lens 22 facing the photosensitive chip 30 is concave; the side of the third lens 23 facing away from the photosensitive chip 30 is concave; the side of the fourth lens 24 facing the photosensitive chip 30 is convex; the side of the fifth lens 25 facing away from the photosensitive chip 30 is convex, and the side facing the photosensitive chip 30 is concave.

[0048] In this embodiment, by such an arrangement, the optical effect of the second lens assembly 20 can be greatly improved, thereby improving the imaging performance of the camera module.

[0049] In one embodiment, the first lens 21 , the second lens 22 , the third lens 23 , the fourth lens 24 and the fifth lens 25 may all be refractive lenses.

[0050] In one embodiment, the relationship between the center thicknesses of the first lens 21, the second lens 22, the third lens 23, the fourth lens 24, and the fifth lens 25 satisfies the condition: -1.8 mm < (GT1 + GT2) - (GT3 + GT4 + GT5) < 2.2 mm; wherein GT1 is the center thickness of the first lens 21, GT2 is the center thickness of the second lens 22, GT3 is the center thickness of the third lens 23, GT4 is the center thickness of the fourth lens 24, and GT5 is the center thickness of the fifth lens 25.

[0051] The center thickness of each lens may be understood as the thickness of each lens in the optical axis direction of the light exit surface 13 , that is, the thickness of each lens on the optical axis of the second lens assembly 20 .

[0052] Moreover, by setting the central thickness relationship of each lens to satisfy the condition: -1.8 mm<(GT1+GT2)-(GT3+GT4+GT5)<2.2 mm, the optical effect of the second lens assembly 20 can be further improved.

[0053] For example, the difference between (GT1+GT2)-(GT3+GT4+GT5) can be set to -1.75 to meet the performance requirements of the second lens assembly 20; or, the difference between (GT1+GT2)-(GT3+GT4+GT5) can be set to 2.15 to meet the performance requirements of the second lens assembly 20; or, the difference between (GT1+GT2)-(GT3+GT4+GT5) can be set to 0.7 to meet the performance requirements of the second lens assembly 20.

[0054] In one embodiment, the gap between any two adjacent lenses among the first lens 21, the second lens 22, the third lens 23, the fourth lens 24, and the fifth lens 25 satisfies the condition: -0.2 mm < (AT2) - (AT1 + AT3 + AT4) < 3.4 mm; where AT1 is the gap between the first lens 21 and the second lens 22 along the optical axis, AT2 is the gap between the second lens 22 and the third lens 23 along the optical axis, AT3 is the gap between the third lens 23 and the fourth lens 24 along the optical axis, and AT4 is the gap between the fourth lens 24 and the fifth lens 25 along the optical axis.

[0055] In this embodiment, the optical effect of the second lens assembly 20 can be further improved by setting the gap between adjacent lenses to meet the condition: -0.2 mm<(AT2)-(AT1+AT3+AT4)<3.4 mm.

[0056] For example, the difference between (AT2) and (AT1+AT3+AT4) can be set to -0.15 to meet the performance requirements of the second lens assembly 20; or, the difference between (AT2) and (AT1+AT3+AT4) can be set to 3.3 to meet the performance requirements of the second lens assembly 20; or, the difference between (AT2) and (AT1+AT3+AT4) can be set to 1.5 to meet the performance requirements of the second lens assembly 20.

[0057] In one embodiment, the gap between the light emitting surface 13 and the first lens 21 along the optical axis can be set to a range of 1 mm to 6 mm to meet the performance requirements of the camera module.

[0058] For example, the gap between the light emitting surface 13 and the first lens 21 along the optical axis can be set to 1.1 mm to meet the performance requirements of the camera module; or, the gap between the light emitting surface 13 and the first lens 21 along the optical axis can be set to 4.0 mm to meet the performance requirements of the camera module; or, the gap between the light emitting surface 13 and the first lens 21 along the optical axis can be set to 5.8 mm to meet the performance requirements of the camera module.

[0059] In one embodiment, as shown in FIG. 4 and FIG. 5 , the camera module further includes a light filtering structure 40 , and the light filtering structure 40 is located between the second lens assembly 20 and the photosensitive chip 30 .

[0060] In this embodiment, a filter structure 40 is provided to filter out unnecessary light, such as infrared light, so as to reduce the interference of other light on the camera module and improve the imaging effect of the camera module.

[0061] In one embodiment, as shown in FIG. 5 , the filter structure 40 includes a glass substrate 41 and an anti-reflection film 42 . The anti-reflection film 42 is located on a side of the glass substrate 41 away from the photosensitive chip 30 .

[0062] In this embodiment, by disposing an anti-reflection film 42 on the glass substrate 41 , the light transmission performance of the filter structure 40 can be improved, that is, the transmittance of the light emitted through the second lens assembly 20 can be improved.

[0063] In one embodiment, the anti-reflection film 42 may be a visible light band anti-reflection film to improve the transmittance of visible light.

[0064] In one embodiment, as shown in FIG5 , the filter structure 40 further includes a cutoff film 43 . The cutoff film 43 is disposed on a side of the glass substrate 41 facing the photosensitive chip 30 , and is used to filter out infrared light.

[0065] In this embodiment, by providing the cut-off film 43 , the filtering effect of the filter structure 40 on infrared light can be improved, so as to further reduce the interference effect of the infrared light on the camera module.

[0066] In one embodiment, the ratio of the effective focal length of the first lens assembly 10 to the effective focal length of the camera module is greater than 2. By setting it in this way, the effect of optical jitter on the imaging of the camera module can be reduced, and the imaging effect of the camera module can be improved.

[0067] It can be understood that the light incident surface 11 can be a convex surface with a curvature radius of R1, and the light exit surface 13 can be a concave surface with a curvature radius of R2, and both R1 and R2 are greater than 0, so that the first lens assembly 10 can not only converge light, but also bend the light path.

[0068] The light incident surface 11 may be a spherical surface, an aspherical surface, or a free-form surface; the light emitting surface 13 may also be a spherical surface, an aspherical surface, or a free-form surface.

[0069] In one embodiment, the object light beam converges through the light incident surface 11 and reaches the reflective surface 12, and is reflected by the reflective surface 12 and then emitted from the light emitting surface 13. The light emitted from the light emitting surface 13 can be directed to the second lens assembly 20, and is refracted by multiple lenses in the second lens assembly 20 to form an image on the photosensitive chip 30, so as to realize the imaging function of the camera module.

[0070] Moreover, when the camera module shakes during shooting, the anti-shake module of the camera module can be used to control the rotation of the first lens assembly 10 to perform anti-shake compensation to improve the imaging quality of the camera module and realize the optical anti-shake function of the camera module.

[0071] In one embodiment, the light incident surface 11, the light exit surface 13, and the surface shapes of the lenses involved in the camera module may be even aspherical surfaces and may satisfy the aspherical surface formula describing the aspherical surface:

[0072] Among them, Z represents the sag of the surface parallel to the above-mentioned optical axis, C represents the curvature of the surface, K represents the cone coefficient, and A, B, C, D, E, F, etc. represent aspheric coefficients.

[0073] In one embodiment, the surface type, curvature radius, thickness, and refractive index / Abbe number of each lens of the camera module can be referred to Table 1, and the aspheric high-order coefficients of each lens surface can be referred to Table 2.

[0074] Table 1

[0075] Table 2

[0076] Figure 6 shows a schematic diagram of the chromatic aberration of the lens surface corresponding to Tables 1 and 2. The vertical axis represents the beam aperture in millimeters, while the horizontal axis represents the chromatic aberration from the center to the edge of the beam in millimeters. As can be seen in Figure 6, all curves converge near the vertical axis, and the chromatic aberration is within 0.02 mm.

[0077] The curves in the figure may correspond to visible light with wavelengths of 470 nm, 510 nm, 550 nm, 610 nm, and 650 nm, respectively.

[0078] Figure 7 shows the distortion of the lens surface corresponding to Tables 1 and 2. The vertical axis represents the distance from the imaging center, i.e., the field of view, and the horizontal axis represents the change in distortion and offset. Figure 7 shows that the distortion offset of this lens surface is within 1.5%, meeting industry standards.

[0079] In one embodiment, the surface type, curvature radius, thickness, and refractive index / Abbe number of each lens of the camera module can be referred to Table 3, and the aspheric high-order coefficients of each lens surface can be referred to Table 4.

[0080] Table 3

[0081] Table 4

[0082] Figure 8 shows a schematic diagram of the chromatic aberration of the lens surfaces corresponding to Tables 3 and 4. The vertical axis represents the beam aperture in millimeters, while the horizontal axis represents the chromatic aberration from the center to the edge of the beam in millimeters. As can be seen in Figure 8, all curves converge near the vertical axis, and the chromatic aberration is within 0.04 mm.

[0083] The curves in the figure may correspond to visible light with wavelengths of 470 nm, 510 nm, 550 nm, 610 nm, and 650 nm, respectively.

[0084] Figure 9 shows a schematic diagram of the lens surface distortion corresponding to Tables 1 and 2. The vertical axis represents the distance from the imaging center, i.e., the field of view angle, while the horizontal axis represents the change in distortion and the offset. Figure 9 shows that the lens surface distortion offset is within 1.5%, meeting industry standards.

[0085] In one embodiment, the surface type, curvature radius, thickness, and refractive index / Abbe number of each lens of the camera module can be referred to Table 5, and the aspheric high-order coefficients of each lens surface can be referred to Table 6.

[0086] Table 5

[0087] Table 6

[0088] Figure 10 shows a schematic diagram of the chromatic aberration of the lens surfaces corresponding to Tables 5 and 6. The vertical axis represents the beam aperture in millimeters, while the horizontal axis represents the chromatic aberration from the center to the edge of the beam in millimeters. As can be seen in Figure 10, all curves converge near the vertical axis, and the chromatic aberration is within 0.02 mm.

[0089] The curves in the figure may correspond to visible light with wavelengths of 470 nm, 510 nm, 550 nm, 610 nm, and 650 nm, respectively.

[0090] Figure 11 shows the distortion of the lens surface corresponding to Tables 1 and 2. The vertical axis represents the distance from the imaging center, i.e., the field of view, and the horizontal axis represents the change in distortion and offset. Figure 11 shows that the distortion offset of this lens surface is within 2%, meeting industry standards.

[0091] In one embodiment, the surface type, curvature radius, thickness, and refractive index / Abbe number of each lens of the camera module can be referred to Table 7, and the aspheric high-order coefficients of each lens surface can be referred to Table 8.

[0092] Table 7

[0093] Table 8

[0094] Figure 12 shows a schematic diagram of the chromatic aberration of the lens surfaces corresponding to Tables 7 and 8. The vertical axis represents the beam aperture in millimeters, while the horizontal axis represents the chromatic aberration from the center to the edge of the beam in millimeters. As can be seen in Figure 12, all curves converge near the vertical axis, and the chromatic aberration is within 0.04 mm.

[0095] The curves in the figure may correspond to visible light with wavelengths of 470 nm, 510 nm, 550 nm, 610 nm, and 650 nm, respectively.

[0096] Figure 13 shows the distortion of the lens surface corresponding to Tables 1 and 2. The vertical axis represents the distance from the imaging center, i.e., the field of view angle, while the horizontal axis represents the change in distortion and the offset. Figure 13 shows that the distortion offset of this lens surface is within 2%, meeting industry standards.

[0097] An embodiment of the present application also provides an electronic device, comprising the above-mentioned camera module.

[0098] It should be noted that the implementation method of the above-mentioned camera module embodiment is also applicable to the embodiment of the electronic device and can achieve the same technical effect, which will not be repeated here.

[0099] The electronic device may be a mobile phone, tablet computer, laptop computer, PDA, vehicle-mounted electronic device, wearable device, ultra-mobile personal computer (UMPC), netbook or personal digital assistant (PDA), etc.

[0100] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A camera module, comprising: a first lens assembly, a second lens assembly, and a photosensitive chip, wherein the first lens assembly includes a light incident surface, a reflective surface, and a light emitting surface, the light incident surface being oriented perpendicular to the light emitting surface, and the reflective surface being configured to reflect light incident from the light incident surface to the light emitting surface, the second lens assembly being located between the light emitting surface and the photosensitive chip, and the optical axis of the light emitting surface coincides with the optical axis of the second lens assembly; The light incident surface is a convex surface with positive optical power, and the light emitting surface is a concave surface with negative optical power.

2. The camera module according to claim 1, wherein: The second lens assembly includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens sequentially distributed along the optical axis direction of the light exit surface, and the first lens is located between the light exit surface and the second lens; Among them, the side of the first lens facing away from the photosensitive chip is convex, and the side facing the photosensitive chip is convex; the side of the second lens facing the photosensitive chip is concave; the side of the third lens facing away from the photosensitive chip is concave; the side of the fourth lens facing the photosensitive chip is convex; the side of the fifth lens facing away from the photosensitive chip is convex, and the side facing the photosensitive chip is concave.

3. The camera module according to claim 2, wherein: The central thickness relationship of the first lens, the second lens, the third lens, the fourth lens, and the fifth lens satisfies the condition: -1.8 mm < (GT1 + GT2) - (GT3 + GT4 + GT5) < 2.2 mm; Among them, GT1 is the center thickness of the first lens, GT2 is the center thickness of the second lens, GT3 is the center thickness of the third lens, GT4 is the center thickness of the fourth lens, and GT5 is the center thickness of the fifth lens.

4. The camera module according to claim 2, wherein: The gap between any two adjacent lenses among the first lens, the second lens, the third lens, the fourth lens and the fifth lens satisfies the condition: -0.2 mm < (AT2) - (AT1 + AT3 + AT4) < 3.4 mm; Among them, AT1 is the gap between the first lens and the second lens along the optical axis, AT2 is the gap between the second lens and the third lens along the optical axis, AT3 is the gap between the third lens and the fourth lens along the optical axis, and AT4 is the gap between the fourth lens and the fifth lens along the optical axis.

5. The camera module according to claim 2, wherein: The gap between the light-emitting surface and the first lens along the optical axis ranges from 1 mm to 6 mm.

6. The camera module according to any one of claims 1 to 5, wherein: The camera module also includes a filter structure, which is located between the second lens assembly and the photosensitive chip.

7. The camera module according to claim 6, wherein: The light filtering structure includes a glass substrate and an anti-reflection film, and the anti-reflection film is arranged on a side of the glass substrate away from the photosensitive chip.

8. The camera module according to claim 7, wherein: The filter structure further includes a cutoff film, which is arranged on a side of the glass substrate facing the photosensitive chip; Wherein, the cut-off film is used to filter out infrared light.

9. The camera module according to any one of claims 1 to 5, wherein: The first lens assembly is an integrated structure and has an anti-shake function.

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

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