Camera module, telephoto lens and electronic equipment

Abstract

The invention discloses a camera module, a telephoto lens and electronic equipment, and belongs to the technical field of lens equipment. The camera module comprises a mounting part, and an incident part, a first lens group, a second lens group and a light receiving part which are sequentially mounted on the mounting part along the incident direction of a light path, and further comprises a first light blocking part which is mounted on the first side of the second lens group, and a second light blocking part which is mounted on the second side of the second lens group, light is prevented from penetrating through a gap between the first side of the second lens group and the inner wall of the mounting part; a first anti-reflection structure is arranged on the side wall of the side, close to the light receiving part, of the first light blocking part, and the first anti-reflection structure is used for scattering light reflected from the light receiving part to the side, close to the light receiving part, of the first light blocking part. Reflection light possibly generated by the side wall of the side, close to the light receiving part, of the first light blocking part is scattered through the anti-reflection structure, finally, stray light is reduced, and the quality and definition of shot pictures are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lens equipment, in particular to a camera module, a long-focus lens and an electronic device. BACKGROUND

[0002] With the rapid development of mobile communication technology, the camera function of a smart phone is increasingly valued by users. In order to meet the increasing demand of users for camera quality, the design and technology of a camera module of a smart phone are also constantly evolving, and a long-focus lens is widely used and popularized in the camera function of a smart phone.

[0003] At present, the design of a camera module of a smart phone needs to consider multi-functional requirements, especially for the application of a long-focus lens. In order to achieve a larger aperture and better imaging effect, the internal structure of the module becomes more complex, and the number of structure surfaces participating in optical reflection in the optical path of the module also increases, resulting in an increase and enhancement of stray light. SUMMARY

[0004] The present application provides a camera module, a long-focus lens and an electronic device, which are used to prevent stray light.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, a camera module is provided, which is applied to a long-focus lens, and the camera module comprises a mounting portion, an incident portion, a first lens group, a second lens group and a light receiving portion which are sequentially mounted on the mounting portion along an incident direction of an optical path, wherein the mounting portion comprises a lens group mounting cylinder and a receiving portion mounting cylinder, the first lens group and the second lens group are both mounted in the lens group mounting cylinder, and an end of the receiving portion mounting cylinder close to the lens group mounting cylinder is provided with a receiving window for giving way to light rays from the second lens group to the light receiving portion, and the camera module further comprises a first light blocking portion mounted on a first side of the second lens group for blocking a gap between the first side of the second lens group and an inner wall of the mounting portion through which the light rays pass, and a first anti-reflection structure is arranged on a side wall of a side of the first light blocking portion close to the light receiving portion, and the first anti-reflection structure is used for dispersing light rays reflected from the light receiving portion to the side of the first light blocking portion close to the light receiving portion.

[0007] The camera module provided by the embodiments of the present application effectively prevents a part of light rays from directly hitting the inner wall of the mounting portion to generate stray light, and at the same time disperses the reflected light rays that may be generated by the side wall of the side of the first light blocking portion close to the light receiving portion through the anti-reflection structure, thereby ultimately reducing the generation of stray light and improving the quality and clarity of a camera picture.

[0008] In one embodiment, the light receiving part comprises a light filtering part and a light sensing part arranged in sequence along the light path direction of incidence, the light filtering part is arranged at one end of the receiving window close to the lens group mounting cylinder, and the circumferential surface of the light filtering part is provided with a first light shielding part for blocking the light from the edge of the receiving window. The first light shielding part will block these light rays to avoid them entering the optical system to cause stray light. When the light rays enter from the edge of the receiving window, if there is no blocking of the first light shielding part, these light rays can be directly reflected or refracted to the lens group or other optical elements, resulting in the generation of stray light.

[0009] In one embodiment, the bottom of the first lens group is provided with a first reinforcing sheet, one side of the first reinforcing sheet close to the incident part is provided with a first accommodation notch, and the area of the inner wall of the lens group mounting cylinder corresponding to the first accommodation notch is provided with a first anti-reflection part for receiving light passing through the first accommodation notch. The bottom of the first lens group is provided with a first reinforcing sheet, which mainly functions to increase the overall strength of the first lens group to prevent the lens from falling off or being damaged. One side of the first reinforcing sheet close to the incident part is provided with a first accommodation notch. The function of this notch is to leave a transmission space for light so that it will not be directly reflected to the light receiving part, but will be guided to the first anti-reflection part, and the area of the inner wall of the lens group mounting cylinder corresponding to the first accommodation notch is provided with a first anti-reflection part. This part will absorb or refract the light passing through the first accommodation notch to prevent it from being directly reflected to the light receiving part.

[0010] In one embodiment, the bottom of the second lens group is provided with a second reinforcing sheet, one side of the second reinforcing sheet close to the light receiving part is provided with a second accommodation notch, and the area of the inner wall of the lens group mounting cylinder corresponding to the second accommodation notch is provided with a second anti-reflection part for receiving light passing through the second accommodation notch. The bottom of the second lens group is provided with a second reinforcing sheet, which mainly functions to increase the overall strength of the second lens group to prevent the lens from falling off or being damaged. One side of the second reinforcing sheet close to the light receiving part is provided with a second accommodation notch. The function of this notch is to leave a transmission space for light so that it will not be directly reflected to the light receiving part, but will be guided to the second anti-reflection part, and the area of the inner wall of the lens group mounting cylinder corresponding to the second accommodation notch is provided with a second anti-reflection part. This part will absorb or refract the light passing through the second accommodation notch to prevent it from being directly reflected to the light receiving part.

[0011] In one embodiment, the mounting portion comprises an incident mounting assembly, the incident portion comprises a prism mounted on the incident mounting assembly, the prism has an incident surface and an exit surface, the exit surface faces the first lens group, at least one edge of the prism is provided as a tangent surface, and the tangent surface is provided with a third anti-reflection portion. The tangent surface is provided on at least one edge of the prism to facilitate the processing of the third anti-reflection portion. The provision of the tangent surface makes the processing of the third anti-reflection portion easier and more accurate. The third anti-reflection portion is located on the tangent surface of the prism, and its function is to prevent the generation of stray light. Through this design, the stray light at the prism can be effectively reduced, and the imaging quality can be improved.

[0012] In one embodiment, the incident surface of the prism is provided with a circumferential silk screen structure extending along the circumference of the incident surface, and / or the exit surface of the prism is provided with a circumferential silk screen structure extending along the circumference of the exit surface. These silk screen structures extend along the circumference of the prism surface. The provision of the circumferential silk screen structure can block the edges of the prism, thereby preventing the reflection and refraction of light at the prism tip angle, and further reducing or preventing the generation of stray light. This structure can effectively reduce the reflection and refraction of light at the edges of the prism, thereby improving the transmission quality of light and improving the imaging effect.

[0013] In one embodiment, a light transmission area is formed in the middle of the circumferential silk screen structure, and the light transmission area is a symmetric shape centered on the principal axis of the prism. Through this customized silk screen design, the camera module can produce a more creative and characteristic light source shape, thereby taking more imaginative and artistic photos.

[0014] In one embodiment, the incident mounting assembly is provided with a second light blocking portion, the second light blocking portion comprises a light blocking structure, the light blocking structure is located on the side of the gap between the exit surface of the prism and the first lens group close to the incident surface, and is used to block the light entering the gap between the exit surface of the prism and the first lens group. The main function of the light blocking structure is to block the light beyond the field of view angle of the viewfinder, so as to prevent it from entering the gap between the exit surface of the prism and the first lens group. In this way, the light beyond the field of view angle of the viewfinder can be effectively reduced or prevented from entering the module to generate stray light.

[0015] In one embodiment, the second light blocking portion comprises a circumferential light blocking piece, the circumferential light blocking piece is provided along the circumference of the incident surface, and the light blocking structure is provided on the circumferential light blocking piece. The circumferential light blocking piece extends along the circumference of the incident surface of the prism to form a light blocking ring structure.

[0016] In one embodiment, the first accommodation notch is a circular arc notch or a rectangular notch; and the second accommodation notch is a circular arc notch or a rectangular notch.

[0017] In an embodiment, the inner side wall of the first accommodation gap and / or the inner side wall of the second accommodation gap is provided with a second anti-reflection structure. The second anti-reflection structure refers to a structure provided on the inner side wall of the first accommodation gap or the second accommodation gap, which functions to prevent direct reflection of light. These structures can take various forms, such as special surface treatment, absorbing layer, or wavy microstructure, etc., to reduce the reflection of light.

[0018] In an embodiment, the first light-blocking part comprises a light-blocking sheet made of metal sheet. Additional support and strength are provided, ensuring the stability and reliability of the second lens group during use.

[0019] In an embodiment, the light-blocking sheet is provided with a first weight-reducing gap facing the light-receiving part and a second weight-reducing gap facing the first lens group, and the first anti-reflection structure is formed on the side wall of the first weight-reducing gap. For weight reduction.

[0020] In an embodiment, the light-receiving surface of the light-filtering part is provided with a second light-blocking part in the circumferential direction, and the light leakage area of the middle part of the second light-blocking part is smaller than that of the first light-blocking part. The second light-blocking part will block light more densely when light passes through, and its light leakage is lower than that of the first light-blocking part alone.

[0021] In an embodiment, the first lens group comprises a first lens carrier and a plurality of first lenses mounted on the first lens carrier, the first reinforcing sheet is mounted on the second side of the first lens carrier, the second lens group comprises a second lens carrier and a plurality of second lenses mounted on the second lens carrier, the first light-blocking part is mounted on the first side of the second lens carrier, and the second reinforcing sheet is mounted on the second side of the second lens carrier.

[0022] In an embodiment, the second lens group is movably mounted in the mounting part along the optical path direction, and the camera module further comprises a driving part mounted on the mounting part, the output end of the driving part is drivingly connected with the second lens group to drive the second lens group to move close to or away from the first lens group.

[0023] The second aspect of the present application provides a long-focus lens, which comprises a camera module and a viewfinder assembly arranged outside the incident part, wherein the camera module is the camera module described above.

[0024] Through the above technical solution, since the long-focus lens comprises the above-mentioned camera module, it at least has all the beneficial effects of the camera module, which will not be repeated here.

[0025] The third aspect of the present application provides an electronic device, the electronic device comprising a body and a camera module mounted on the body, the camera module being the camera module described above, the mounting portion comprising an incident mounting assembly, the incident portion comprising a prism mounted on the incident mounting assembly, the prism having an incident surface and an exit surface, the incident surface being parallel to the plane in which the X direction and the Y direction of the body lie, and the exit surface being parallel to the Z direction of the body, wherein the thickness direction of the body is the Z direction of the body, the length direction of the body is the Y direction of the body, and the width direction of the body is the X direction of the body.

[0026] By the above technical solution, since the electronic device comprises the camera module described above, the electronic device at least has all the beneficial effects of the camera module, which will not be described herein again. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A structural schematic diagram of the camera module provided by the embodiment of the present application is shown in the figure.

[0028] Figure 2 An exploded schematic diagram of the camera module provided by the embodiment of the present application is shown in the figure.

[0029] Figure 3 A light path schematic diagram of the camera module provided by the embodiment of the present application, in which light is reflected to the light receiving portion through the gap between the first side of the second lens group and the inner wall of the mounting portion, is shown in the figure.

[0030] Figure 4 A light path schematic diagram of the camera module provided by the embodiment of the present application, in which light is reflected to the light receiving portion through the first light blocking portion, is shown in the figure.

[0031] Figure 5 A structural schematic diagram of the light blocking sheet provided by the embodiment of the present application, in which the convex portion is in the shape of an arc, is shown in the figure.

[0032] Figure 6 A structural schematic diagram of the light blocking sheet provided by the embodiment of the present application, in which the convex portion is in the shape of a triangle, is shown in the figure.

[0033] Figure 7 A structural schematic diagram of the light blocking sheet provided by the embodiment of the present application, in which the convex portion is in the shape of a trapezoid, is shown in the figure.

[0034] Figure 8 A structural schematic diagram of the light blocking sheet provided by the embodiment of the present application, in which the convex portion is in the shape of a trapezoid, is shown in the figure.

[0035] Figure 9 A light path schematic diagram of the camera module provided by the embodiment of the present application, in which light is reflected to the light receiving portion through the edge of the receiving window, is shown in the figure.

[0036] Figure 10 A structural schematic diagram of the light blocking sheet provided by the embodiment of the present application, in which the convex portion is in the shape of a trapezoid, is shown in the figure.

[0037] Figure 11A schematic diagram of an optical path of the camera module when light is reflected onto the light receiving portion by the first reinforcing sheet according to an embodiment of the present application is provided;

[0038] Figure 12 A schematic diagram of a structure of the first reinforcing sheet with a rectangular notch as the first notch according to an embodiment of the present application is provided;

[0039] Figure 13 A schematic diagram of a structure of the first reinforcing sheet with a circular arc notch as the first notch according to an embodiment of the present application is provided;

[0040] Figure 14 A schematic diagram of a structure of the first reinforcing sheet with a rectangular notch as the first notch and provided with a second anti-reflection structure according to an embodiment of the present application is provided;

[0041] Figure 15 A schematic diagram of a structure of the first reinforcing sheet with a circular arc notch as the first notch and provided with a second anti-reflection structure according to an embodiment of the present application is provided;

[0042] Figure 16 A schematic diagram of an optical path of the camera module when light is reflected onto the light receiving portion by the second reinforcing sheet according to an embodiment of the present application is provided;

[0043] Figure 17 A schematic diagram of a structure of the second reinforcing sheet with a rectangular notch as the second notch according to an embodiment of the present application is provided;

[0044] Figure 18 A schematic diagram of a structure of the second reinforcing sheet with a circular arc notch as the second notch according to an embodiment of the present application is provided;

[0045] Figure 19 A schematic diagram of a structure of the second reinforcing sheet with a rectangular notch as the second notch and provided with a second anti-reflection structure according to an embodiment of the present application is provided;

[0046] Figure 20 A schematic diagram of a structure of the second reinforcing sheet with a circular arc notch as the second notch and provided with a second anti-reflection structure according to an embodiment of the present application is provided;

[0047] Figure 21 A schematic diagram of an optical path of the camera module when light is reflected onto the light receiving portion by the apex angle of the prism according to an embodiment of the present application is provided;

[0048] Figure 22 A front view of the prism according to an embodiment of the present application is provided;

[0049] Figure 23 A left view of the prism according to an embodiment of the present application is provided;

[0050] Figure 24 A right view of the prism according to an embodiment of the present application is provided;

[0051] Figure 25 A top view of a prism provided in an embodiment of this application;

[0052] Figure 26 This is a schematic diagram of the first circumferential screen printing structure provided in the embodiments of this application;

[0053] Figure 27 This is a schematic diagram of the second circumferential screen printing structure provided in the embodiments of this application;

[0054] Figure 28 This is a schematic diagram of the third circumferential screen printing structure provided in the embodiments of this application;

[0055] Figure 29 This is a schematic diagram of the fourth circumferential screen printing structure provided in the embodiments of this application;

[0056] Figure 30 This is a schematic diagram of the fifth circumferential screen printing structure provided in the embodiments of this application;

[0057] Figure 31 A schematic diagram of the optical path of the camera module when light outside the viewfinder's field of view enters and is reflected within the module, as provided in an embodiment of this application.

[0058] Figure 32 This is a schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0059] Figure 33 This is a schematic diagram of the structure of the first lens group and the second lens group provided in the embodiments of this application;

[0060] Figure 34 This is a cross-sectional schematic diagram of the second lens group provided in an embodiment of this application;

[0061] Figure 35 This is a cross-sectional schematic diagram of the first lens group provided in an embodiment of this application;

[0062] Figure 36 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application;

[0063] Figure 37 This is a schematic diagram of the structure of an electronic device from another perspective, as provided in the embodiments of this application.

[0064] The meanings of the various symbols in the attached icons are as follows:

[0065] 10. Mounting section; 11. Lens assembly mounting tube; 111. First anti-reflective section; 112. Second anti-reflective section; 12. Receiver mounting tube; 121. Receiver window; 13. Incident mounting assembly; 131. Light-blocking structure; 132. Prism carrier;

[0066] 21, prism; 211, incident surface; 212, exit surface; 213, section surface; 214, circumferential silk print structure; 2141, light transmission area;

[0067] 30, first lens group; 31, first reinforcing sheet; 311, first displacement notch; 32, first lens carrier; 33, first lens;

[0068] 40, second lens group; 41, second reinforcing sheet; 411, second displacement notch; 4111, second anti-reflection structure; 42, second lens carrier; 43, second lens;

[0069] 50, light receiving part; 51, light filtering part; 511, first light shielding part; 512, second light shielding part; 52, light sensing part;

[0070] 61, light blocking sheet; 611, first weight-reducing notch; 6111, first anti-reflection structure; 612, second weight-reducing notch;

[0071] 70, body;

[0072] 80, camera module. DETAILED DESCRIPTION

[0073] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0074] It should be understood that in the description of the present application, it is understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0075] The terms "first", "second", "third", "fourth" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. For example, the first pushing part and the second pushing part are only used to distinguish different pushing parts, and do not limit the order, the first pushing part can be named as the second pushing part, and the second pushing part can be named as the first pushing part, without departing from the scope of various described embodiments. And the terms "first", "second", "third", "fourth" and the like do not limit the features indicated to be different.

[0076] In the embodiments of the present application, unless specifically defined and limited otherwise, the terms "connected", "connected", and the like should be interpreted broadly, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances. In the description of the embodiments of the present application, the meaning of "multiple" is two or more than two, unless specifically defined and limited otherwise.

[0077] In the embodiments of the present application, "and / or" is only to describe the association relationship of the associated objects, which means that there can be three kinds of relationships; for example, A and / or B can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0078] It should be noted that in the embodiments of the present application, the words "in an embodiment", "exemplarily", "for example" and the like are used to represent as an example, illustration or description. Any embodiment or design scheme described as "in an embodiment", "exemplarily", "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of "in an embodiment", "exemplarily", "for example" and the like is intended to present the relevant concept in a specific way.

[0079] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with the drawings and embodiments.

[0080] In order to realize a larger aperture and better imaging effect in the related art, the internal structure of the module becomes more complex, and the structure surface participating in optical reflection in the optical path of the module also increases, resulting in an increase and enhancement of stray light phenomenon. When the internal structure of the module becomes more complex, the propagation path of light in it also becomes more complex. This means that the light will reflect with more surfaces when passing through the internal structure of the module. For example, the light will refract or reflect when passing through different lenses, lenses and other optical elements, lens structure pieces, and these reflections will make the path of the light in the module more complex. With multiple reflections of the light in the module, a part of the light escapes from the expected light path of the module, and finally produces stray light or light spot on the imaging plane. These stray light phenomena will reduce the contrast and clarity of the image, and even affect the overall quality and color restoration of the image.

[0081] Therefore, although the aperture size and the complexity of the module's internal structure were increased in the design to achieve better imaging results, this resulted in an increase in the number of structural surfaces involved in optical reflection in the module's optical path, which in turn exacerbated and enhanced stray light phenomena.

[0082] See Figure 1 and Figure 2 As shown, to solve the above problems, specifically, the camera module of this application embodiment is applied to a telephoto lens. The camera module includes a mounting part 10, and an incident part, a first lens group 30, a second lens group 40, and a light receiving part 50, which are sequentially mounted on the mounting part 10 along the incident light path. The mounting part 10 includes a lens group mounting cylinder 11 and a receiving part mounting cylinder 12. The first lens group 30 and the second lens group 40 are both mounted inside the lens group mounting cylinder 11. A receiving window 121 is provided at one end of the receiving part mounting cylinder 12 near the lens group mounting cylinder 11. The receiving window 121 is used to allow light from the second lens group 40 to pass through the light receiving part 50. Please refer to... Figure 3 As shown, without the first light-blocking part, some light rays will pass through the gap between the first side of the second lens group 40 and the inner wall of the mounting part 10, and directly hit the inner wall of the mounting part 10. After reflection, they will reach the light receiving part 50, producing stray light. Please refer to... Figure 4 As shown, a portion of the light rays will pass sequentially through the incident part, the first lens group 30, and the second lens group 40 to reach the light receiving part 50. A portion of the light rays reaching the light receiving part 50 will be reflected by the elements of the light receiving part 50 and will reach the side wall of the first light blocking part near the light receiving part 50, and will be reflected back to the light receiving part 50, thereby generating stray light.

[0083] For this reason, see Figure 1 As shown, the camera module in the embodiment of this application further includes a first light-blocking part, which is installed on the first side of the second lens group 40 to block light from passing through the gap between the first side of the second lens group 40 and the inner wall of the mounting part 10. A first anti-reflection structure 6111 is provided on the side wall of the first light-blocking part near the light receiving part 50. The first anti-reflection structure 6111 is used to disperse the light reflected from the light receiving part 50 to the side of the first light-blocking part near the light receiving part 50. In order to prevent some of the light from directly hitting the inner wall of the mounting part 10 and generating stray light, the first light-blocking part is designed in the embodiment of this application. This component is installed on the first side of the second lens group 40, located in the light propagation path, and is used to block light from passing through the gap between the first side of the second lens group 40 and the inner wall of the mounting part 10. Here, "first side" refers to one side of the second lens group 40, which refers to a specific side in the structure of the second lens group 40, such as Figure 1The first light-blocking part is provided with a first anti-reflection structure 6111 on the side wall of the side of the first light-blocking part close to the light receiving part 50, which is used to scatter the light reflected from the light receiving part 50 to the side of the first light-blocking part close to the light receiving part 50, so as to prevent the reflected light from reaching the light receiving part 50 again, thereby reducing the generation of stray light. Through the above arrangement, the first light-blocking part effectively prevents a part of the light from directly hitting the inner wall of the mounting part 10 to generate stray light, and at the same time, the anti-reflection structure scatters the reflected light that may be generated on the side wall of the first light-blocking part close to the light receiving part 50, thereby ultimately reducing the generation of stray light and improving the quality and clarity of the camera picture.

[0084] It should be noted that the camera module refers to a modular component used for the camera function of a mobile phone, which includes multiple optical elements and mechanical components. The telephoto lens refers to a lens with a relatively long focal length, which can realize the shooting of distant scenes and is suitable for scenes that require long-distance shooting. The mounting part 10 is a part of the camera module, which is a basic structure for supporting and mounting optical elements and other mechanical components. The incident part is the part where light enters the camera module, which is located before the first lens group 30 in the optical path. The first lens group 30 and the second lens group 40 are two lens groups in the camera module, which are used to refract and focus light to form a clear image. The light receiving part 50 is the end part of the camera module, which is used to receive light processed by the lens group and transmit it to the photosensitive element of the camera equipment. The lens group mounting cylinder 11 and the receiving part mounting cylinder 12 are two parts of the mounting part 10, which are used to mount the first lens group 30 and the second lens group 40 and the light receiving part 50 respectively. The receiving window 121 is located at one end of the receiving part mounting cylinder 12, which is used to guide the light from the second lens group 40 to the light receiving part 50.

[0085] The first anti-reflection structure 6111 is a structure provided on the side wall of the side of the first light-blocking part close to the light receiving part 50, which is used to scatter the light reflected from the light receiving part 50 to the side of the first light-blocking part close to the light receiving part 50, so as to reduce the possibility of reflected light returning to the light receiving part 50 to generate stray light. The first anti-reflection structure 6111 can adopt various structural forms, including but not limited to, a plurality of protruding parts provided on the side wall of the side of the first light-blocking part close to the light receiving part 50. These protrusions can be small protrusions, corners or protrusions, which are used to change the propagation direction and path of the light, thereby scattering the light reflected from the light receiving part 50 to the side of the first light-blocking part close to the light receiving part 50, and reducing the reflected light returning to the light receiving part 50. In other embodiments, special microstructure surfaces such as micro-concave-convex structures, surface textures, micro-columnar structures, etc. can also be used to change the incident angle and propagation direction of the light to achieve the purpose of reducing the reflectivity.

[0086] Referring to Figure 1 andFigure 2 As shown, in order to improve the structural strength of the second lens group 40 and avoid the lens in the second lens group 40 from falling off, the first light blocking part in the embodiment of the application includes a light blocking sheet 61 made of a metal sheet, such as a steel sheet, to strengthen the structural strength of the second lens group 40. The first light blocking part is provided to enhance the structural strength of the second lens group 40 to prevent the lens therein from falling off. To this end, the light blocking sheet 61 is made of a metal sheet, such as a steel sheet. Additional support and strength are provided to ensure the stability and reliability of the second lens group 40 during use.

[0087] Since the metal sheet, such as a steel sheet, has a smooth surface and is more likely to reflect light and produce stray light, the first anti-reflection structure 6111 is provided to change the propagation direction and path of the light, thereby dispersing the light reflected from the light receiving part 50 to the side of the first light blocking part close to the light receiving part 50, reducing the reflected light back to the light receiving part 50. Further reducing the generation of stray light, improving the imaging quality and clarity of the camera module.

[0088] Referring to Figures 5 to 7 As shown, since metal materials are generally heavy, in order to reduce the weight of the first light blocking part, the light blocking sheet 61 in the embodiment of the application is provided with a first weight-reducing opening 611 and a second weight-reducing opening 612, the first weight-reducing opening 611 is towards the light receiving part 50, the second weight-reducing opening 612 is towards the first lens group 30, and the first anti-reflection structure 6111 is formed on the side wall of the first weight-reducing opening 611, which helps to reduce the weight of the light blocking sheet 61. At the same time, in order to ensure the stability and balance of the structure, the first weight-reducing opening 611 and the second weight-reducing opening 612 adopt a circular arc shape. Referring to Figures 5 to 7 As shown, the first anti-reflection structure 6111 includes a plurality of convex portions, the shape of the convex portions includes but is not limited to a circular arc, a triangle, and a trapezoid. The diameter of the circular arc is preferably less than 0.2 mm.

[0089] Referring to Figure 1 As shown, the light receiving part 50 in the embodiment of the application includes a light filtering part 51 and a light sensing part 52 arranged in sequence along the incident direction of the light path, the light filtering part 51 is arranged at one end of the receiving window 121 close to the lens group mounting cylinder 11, and the circumferential surface of the light filtering part 51 is provided with a first light shielding part 511 for blocking the light from the edge of the receiving window 121. The light receiving part 50 is composed of the light filtering part 51 and the light sensing part 52, which are arranged in sequence along the incident direction of the light path. The light filtering part 51 is located at one end of the receiving window 121 close to the lens group mounting cylinder 11, and is used to filter out specific wavelengths or frequencies of light. The light sensing part 52 follows closely behind, used to receive the light processed by the light filtering part 51 and convert it into an electrical signal. Referring to Figure 8As shown, the first light shielding part 511 is arranged around the light receiving surface of the filter part 51, which can block the light from the edge of the receiving window 121, so as to avoid the generation of direct reflection stray light. Referring to Figure 9 As shown, in the case where the filter part 51 is not placed in front of the receiving window 121 and the first light shielding part is arranged, a part of the light will be directly reflected to the light receiving part 52 from the edge of the receiving window 121, and the stray light is formed.

[0090] The filter part 51 can be an infrared filter, blue glass, etc., and the scheme is not unique.

[0091] It should be noted that the first light shielding part 511 adopts silk screen ink, and a relatively thick ink layer is formed around the edge of the receiving window 121, which has a relatively high density and can effectively block the light from the edge of the receiving window 121, so as to prevent the stray light reflected from the edge of the receiving window 121 from reaching the light receiving element. The first light shielding part 511 will block these light lines, avoiding their entering the optical system to cause stray light. When the light lines enter from the edge of the receiving window 121, if there is no blocking of the first light shielding part 511, these light lines can be directly reflected or refracted to the lens group or other optical elements, resulting in the generation of stray light. With the protection of the first light shielding part 511, after the light lines are blocked, the generation of stray light will be greatly reduced. By effectively blocking the edge light and reducing the direct reflection stray light, the first light shielding part 511 can ensure that the light lines enter the light receiving part 52 normally, so that the light receiving part 52 can clearly receive light, and the imaging quality is reduced or the imaging noise is increased due to the influence of stray light.

[0092] Referring to Figure 8 As shown, in an embodiment, the silk screen design around the light receiving surface of the filter part 51 is avoided, which aims to avoid the problems such as module material deviation. It can effectively reduce the reflection and light leakage of the light lines at the edge of the receiving window 121, and further avoid the dark corner phenomenon of the light lines when the light sensor is shooting, so as to improve the perception and overall quality of the imaging effect.

[0093] Referring to Figure 10As shown, the light filtering part 51 in the embodiment of the present application is provided with a second light shielding part 512 in the circumferential direction of the light emitting surface, and the light leakage area of the middle part of the second light shielding part 512 is smaller than that of the first light shielding part 511. The second light shielding part is arranged around the light emitting surface of the light filtering part 51 to further block the light leakage and scattering of the light. The light leakage area of the middle part of the second light shielding part 512 is smaller than that of the first light shielding part 511. This means that the second light shielding part 512 will block the light leakage more densely when the light passes through, and the light leakage is lower than that of the first light shielding part 511. The filter is arranged in front of the window, and the arrangement of the first light shielding part 511 and the second light shielding part 512 can effectively shield the stray light scattered by the glue between the filter and the window. When the light passes through the light filtering part 51, the glue may reflect or scatter, resulting in the generation of stray light. At the same time, by arranging the filter on the side of the window away from the light sensing part 52, the distance between the filter and the light sensing part 52 is increased, which can also avoid the pollution of the light sensing part 52 by some particulate matters generated during the installation of the filter.

[0094] Referring to Figure 1 As shown, the bottom of the first lens group 30 in the embodiment of the present application is provided with a first reinforcing sheet 31, referring to Figure 11 As shown, it can be seen that a part of the light will hit the first reinforcing sheet 31 to form stray light. For this purpose, referring to Figure 1 and Figures 12 to 15As shown, the side of the first reinforcing sheet 31 close to the incident part is provided with a first let-out notch 311, and the area of the inner wall of the lens group mounting cylinder 11 corresponding to the first let-out notch 311 is provided with a first anti-reflection part 111, which is used to receive the light passing through the first let-out notch 311. The bottom of the first lens group 30 is provided with a first reinforcing sheet 31, which mainly functions to increase the overall strength of the first lens group 30 to prevent the lens from falling off or being damaged. Generally, the first reinforcing sheet 31 will adopt a metal sheet to ensure sufficient strength, and it is difficult to process the carrier and other structures of the first lens group 30 on the steel sheet after coating. Because the surface of the metal sheet is relatively smooth, when the light hits the first reinforcing sheet 31, direct reflection is easy to occur, resulting in the generation of stray light. This will interfere with the light receiving part 50 and affect the imaging quality. In order to solve the problem of stray light caused by light reflection, the side of the first reinforcing sheet 31 close to the incident part is provided with a first let-out notch 311. The function of this notch is to let out the transmission space of the light, so that it will not be directly reflected to the light receiving part 50, but will be guided to the first anti-reflection part 111. The area of the inner wall of the lens group mounting cylinder 11 corresponding to the first let-out notch 311 is provided with a first anti-reflection part 111. This part will absorb or refract the light passing through the first let-out notch 311 to prevent it from being directly reflected to the light receiving part 50. Among them, the first anti-reflection part 111 can be an anti-reflection coating to reduce the reflectivity and reduce the generation of stray light. It can also change the propagation direction of the light by designing a special surface structure or concave-convex surface, so that the light is not easy to reflect back to the light receiving part 50. For example, surface treatment with microstructure or nanostructure can effectively reduce the reflectivity. An absorption layer can also be used to absorb the energy of the reflected light and reduce the intensity of the reflected light. In this way, the reflectivity can be effectively reduced, and the generation of stray light can be reduced.

[0095] Referring to Figure 16 As shown, it can be seen that a part of the light will hit the second reinforcing sheet 41 to form stray light, referring to Figure 1 and Figures 17 to 20As shown, the bottom of the second lens group 40 in the embodiment of the present application is provided with a second reinforcing sheet 41, and the side of the second reinforcing sheet 41 close to the light receiving part 50 is provided with a second accommodation notch 411. The area of the inner wall of the lens group mounting cylinder 11 corresponding to the second accommodation notch 411 is provided with a second anti-reflection part 112, which is used to receive the light passing through the second accommodation notch 411. The bottom of the second lens group 40 is provided with a second reinforcing sheet 41, which mainly functions to increase the overall strength of the second lens group 40 to prevent the lens from falling off or being damaged. Generally, the second reinforcing sheet 41 will adopt a metal sheet to ensure sufficient strength, and it is difficult to process the carrier structure of the second lens group 40 on the steel sheet after coating. Because the surface of the metal sheet is relatively smooth, when the light hits the second reinforcing sheet 41, direct reflection is easy to occur, resulting in the generation of stray light. This will interfere with the light receiving part 50 and affect the imaging quality. In order to solve the problem of light reflection and stray light generation, the side of the second reinforcing sheet 41 close to the light receiving part 50 is provided with a second accommodation notch 411. The function of this notch is to leave a transmission space for the light, so that it will not be directly reflected to the light receiving part 50, but will be guided to the second anti-reflection part 112. The area of the inner wall of the lens group mounting cylinder 11 corresponding to the second accommodation notch 411 is provided with a second anti-reflection part 112. This part will absorb or refract the light passing through the second accommodation notch 411 to prevent it from being directly reflected to the light receiving part 50. Among them, the second anti-reflection part 112 can be an anti-reflection coating to reduce reflectivity and reduce the generation of stray light. It can also change the propagation direction of the light by designing a special surface structure or concave-convex surface, so that the light is not easy to reflect back to the light receiving part 50. For example, surface treatment with microstructure or nanostructure can effectively reduce reflectivity. An absorption layer can also be used to absorb the energy of the reflected light and reduce the intensity of the reflected light. In this way, the reflectivity can be effectively reduced, and the generation of stray light can be reduced.

[0096] Referring to Figures 12 to 15 and Figures 17 to 20 As shown, the first accommodation notch 311 in the embodiment of the present application is a circular arc notch or a rectangular notch; the second accommodation notch 411 is a circular arc notch or a rectangular notch. Preferably, the circular arc notch refers to designing the edge of the notch in a circular arc shape. This design can reduce the sharp edges of the notch, help to reduce stress concentration, and improve the strength and durability of the part. The circular arc notch can reduce the edge stress of the first accommodation notch 311 and the second accommodation notch 411, thereby enhancing the structural strength. Of course, in other embodiments, other shapes of notches can also be used.

[0097] Referring to Figures 12 to 15 and Figures 17 to 20As shown, the inner side wall of the first displacement notch 311 and / or the inner side wall of the second displacement notch 411 has a second anti-reflection structure 4111. The second anti-reflection structure 4111 refers to a structure arranged on the inner side wall of the first displacement notch 311 or the second displacement notch 411, which functions to prevent direct reflection of light. These structures can take various forms, such as special surface treatment, absorption layer, or wavy microstructure, etc., to reduce the reflection of light.

[0098] Referring to Figure 21 As shown, it can be seen that the prism 21 also produces stray light at the apex angle of the prism 21, referring to Figure 1 、 Figure 22 and Figure 23 As shown, the mounting portion 10 in the embodiment of the present application includes an incident mounting assembly 13, the incident portion includes a prism 21 mounted on the incident mounting assembly 13, the prism 21 has an incident surface 211 and an exit surface 212, the exit surface 212 is directed towards the first lens group 30, at least one edge of the prism 21 is provided as a tangent surface 213, and the tangent surface 213 is provided with a third anti-reflection portion. The apex angle of the prism 21 produces stray light due to reflection and refraction of light, which may affect the quality of imaging. In the embodiment of the present application, the mounting portion 10 of the camera module includes an incident mounting assembly 13, and the incident portion includes a prism 21 mounted on this assembly. The prism 21 has an incident surface 211 and an exit surface 212, and the exit surface 212 is directed towards the first lens group 30, which is designed to guide light. The tangent surface 213 is arranged on at least one edge of the prism 21, which is used to facilitate the processing of the third anti-reflection portion. The arrangement of the tangent surface 213 makes the processing of the third anti-reflection portion easier and more accurate. The third anti-reflection portion is located on the tangent surface 213 of the prism 21, which functions to prevent the generation of stray light. Through this design, the stray light at the prism 21 can be effectively reduced, and the imaging quality is improved.

[0099] Referring to Figure 24 and Figure 25As shown, in order to avoid stray light also occurring at the edge of the prism 21, the circumferential silk screen structure 214 is arranged on the incident surface 211 of the prism 21 in the embodiment of the present application, the circumferential silk screen structure 214 extends along the circumference of the incident surface 211, and / or the circumferential silk screen structure 214 is arranged on the exit surface 212 of the prism 21, the circumferential silk screen structure 214 extends along the circumference of the exit surface 212. The circumferential silk screen structure 214 blocks the edge of the prism 21, thereby preventing the generation of stray light. The edge of the prism 21 can generate stray light due to reflection and refraction of light, which can affect the quality of imaging. In the embodiment of the present application, the circumferential silk screen structure 214 is arranged on the incident surface 211 and / or the exit surface 212 of the prism 21 to solve the problem of the prism 21. The silk screen structure extends along the circumference of the surface of the prism 21. The circumferential silk screen structure 214 can block the edge of the prism 21, thereby preventing reflection and refraction of light at the edge of the prism 21, and reducing or preventing the generation of stray light. This structure can effectively reduce the reflection and refraction of light at the edge of the prism 21, thereby improving the transmission quality of light and improving the imaging effect.

[0100] Referring to Figures 26 to 30 As shown, the circumferential silk screen structure 214 in the embodiment of the present application forms a light transmission area 2141 in the middle, and the light transmission area 2141 is a symmetric shape centered on the main optical axis of the prism 21. In the middle of the circumferential silk screen structure 214, a light transmission area 2141 is formed, that is, an area through which light can pass. The shape of the light transmission area 2141 is a symmetric shape centered on the main optical axis of the prism 21. The shape of the light transmission area 2141 in the horizontal and vertical directions is the same, showing a kind of symmetry. Users can choose different shapes of silk screen patterns according to their own preferences and needs. The personalized needs of users for light source shapes are met, for example, users can choose a star-shaped light source, so that the photographed photos have more artistic and imaginative effects. Through this customized silk screen design, the camera module can produce more creative and characteristic light source shapes, thereby shooting more imaginative and artistic photos.

[0101] Referring to Figure 31 As shown, the gap between the prism 21 and the first lens group 30 is large due to optical design reasons, and the light entering the module and reflecting in the non-viewfinder field of view angle range causes stray light, referring to Figure 1 and Figure 32As shown, the incident installation assembly 13 in the embodiment of the present application is provided with a second light blocking part, which includes a light blocking structure 131 located on the side of the gap between the exit surface 212 of the prism 21 and the first lens group close to the incident surface 211, for blocking light from entering the gap between the exit surface 212 of the prism 21 and the first lens group. The main function of the light blocking structure 131 is to block those light rays beyond the field of view angle range of the viewfinder, preventing them from entering the gap between the exit surface 212 of the prism 21 and the first lens group 30. In this way, the light rays outside the field of view angle range of the viewfinder can be effectively reduced or prevented from entering the module to produce stray light.

[0102] The second light blocking part in the embodiment of the present application includes a circumferential light blocking piece, which is arranged along the circumference of the incident surface 211, and the light blocking structure 131 is arranged on the circumferential light blocking piece. The circumferential light blocking piece is a light blocking component arranged along the circumference of the incident surface 211 of the prism 21. It surrounds the incident surface 211 of the prism 21 and extends along the circumference to form a light blocking ring structure. The light blocking structure 131 is part of the circumferential light blocking piece or integrated with it, and they together constitute part of the second light blocking part. In order to facilitate installation without affecting the light blocking effect, a certain gap can be provided between the light blocking structure 131 and the viewfinder window.

[0103] As shown in Figure 1 , Figure 2 and Figures 32 to 35 , the first lens group 30 in the embodiment of the present application includes a first lens carrier 32 and a plurality of first lenses 33 mounted on the first lens carrier 32, and the first reinforcing sheet 31 is mounted on the second side of the first lens carrier 32. The second lens group 40 includes a second lens carrier 42 and a plurality of second lenses 43 mounted on the second lens carrier 42, and the first light blocking part is mounted on the first side of the second lens carrier 42, and the second reinforcing sheet 41 is mounted on the second side of the second lens carrier 42, wherein the second side is opposite to the first side. The first lens group 30 includes a first lens carrier 32 and a plurality of first lenses 33 mounted thereon. These lenses have different optical functions for achieving specific optical effects. The first reinforcing sheet 31 is mounted on the second side of the first lens carrier 32, i.e. the side away from the direction of view. Similarly, the second lens group 40 includes a second lens carrier 42 and a plurality of second lenses 43 mounted thereon. Similarly, these lenses can have different optical functions. The second reinforcing sheet 41 is mounted on the second side of the second lens carrier 42, which is also the side away from the direction of view. The main function of the first reinforcing sheet 31 and the second reinforcing sheet 41 is to enhance the overall strength of the first lens group 30 and the second lens group 40 to ensure their stability and reliability. Effectively prevent the lens group from deforming or being damaged due to external environmental factors during use, thereby ensuring the performance and life of the camera module.

[0104] In this embodiment, the second lens group 40 is movably mounted within the mounting portion 10 along the optical path direction. The camera module also includes a drive unit mounted on the mounting portion 10. The output end of the drive unit is drivenly connected to the second lens group 40 to drive the second lens group 40 closer to or further away from the first lens group 30. The second lens group 40 is mounted within the mounting portion 10 of the camera module and can move along the optical path direction. The position of the second lens group 40 can be adjusted as needed to achieve precise control and adjustment of the optical path. The camera module is equipped with a drive unit whose output end is connected to the second lens group 40. The drive unit provides power to enable the second lens group 40 to move closer to or further away from the first lens group 30 along the optical path direction. In this way, the position of the second lens group 40 can be adjusted, thereby affecting the focal length or other optical parameters of the optical path. The drive unit and driving method can be an electric actuator, a piezoelectric actuator, etc., which will not be described in detail here.

[0105] According to a second aspect of this application, a telephoto lens is provided, the telephoto lens including a camera module and a viewfinder assembly disposed outside the incident portion, wherein the camera module is the aforementioned camera module.

[0106] See Figure 36 and Figure 37 As shown, according to a third aspect of this application, an electronic device is provided. The electronic device includes a body 70 and a camera module 80 mounted on the body 70. The camera module 80 is the aforementioned camera module 80. The mounting part 10 includes an incident mounting assembly 13. The incident part includes a prism 21 mounted on the incident mounting assembly 13. The prism 21 has an incident surface 211 and an exit surface 212. The incident surface 211 is parallel to the plane containing the X and Y directions of the body 70, and the exit surface 212 is parallel to the Z direction of the body 70. The thickness direction of the body 70 is the Z direction of the body 70, the length direction of the body 70 is the Y direction of the body 70, and the width direction of the body 70 is the X direction of the body 70. Through the above settings, the multi-group (first lens module and second lens module) camera module 80 of this application embodiment, which features a large aperture, long focal length macro, high pixel count, and large sensor, can also maintain a clean image and avoid stray light; while simultaneously achieving the requirements of module miniaturization and lightweighting; the overall height / thickness can be further reduced, enhancing the competitiveness of the entire product. The lenses of the first lens module and the second lens module adopt a chamfered edge design in the vertical direction, which can reduce the module height / thickness, lens, and module weight; the chamfered edge position of the lens can be set with fogging and blackening to reduce stray light reflected in the chamfered edge direction; the lens chamfer ratio (chamfered edge diameter / circle edge diameter) range can be achieved from 5-35%; the multi-group design can achieve longer focal length and shorter macro optical design; the aperture range can be F1.6-2.5; the focal length can be 6-100mm; and the macro can be 5-20mm.

[0107] The incident mounting assembly 13 comprises a prism carrier 132 for carrying the prism 21, and the upper and lower parts of the prism carrier 132 are designed with cutouts to further reduce the weight of the module.

[0108] The lens carrier can be designed in one piece to reduce the size, reduce the weight of the module, improve the reliability of the lens carrier, and increase the design openness of the moving group.

[0109] The moving group lens can be the first lens module or the second lens module, and the displacement of the moving group lens is not limited to the use of sliding shaft movement, VCM (Voice Coil Motor) coil motor drive, shape memory alloy drive, piezoelectric drive motor; The aperture is pre-positioned to obtain a larger aperture design; By pre-positioning the aperture, a larger aperture design is achieved, increasing the amount of light entering the lens, thereby improving the imaging quality under low light conditions and improving the flexibility of shooting.

[0110] The above lens module can also be applied to light elimination modules for vehicle-mounted, PC, AR, VR, security, etc. Among them, vehicle-mounted (Vehicle Mounted): refers to the equipment or system installed on the car or other vehicles. PC (Personal Computer): personal computer, usually refers to notebook computer. AR (Augmented Reality): augmented reality, a technology that improves the user's perception experience by superimposing digital information and images onto real-world scenes. VR (Virtual Reality): virtual reality, a technology that creates an immersive experience by simulating a fictional environment. Security and Surveillance (Security and Surveillance): refers to systems or devices used to monitor and protect the safety of property, personnel or places.

[0111] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. An image capturing module, comprising: The camera module is applied to a long-focus lens, and the camera module comprises a mounting portion, an incident portion, a first lens group, a second lens group and a light receiving portion which are sequentially mounted on the mounting portion along an incident direction of an optical path, wherein the mounting portion comprises a lens group mounting cylinder and a receiving portion mounting cylinder, the first lens group and the second lens group are both mounted in the lens group mounting cylinder, and one end of the receiving portion mounting cylinder close to the lens group mounting cylinder is provided with a receiving window for giving way to light rays from the second lens group to the light receiving portion, and the camera module further comprises: A first light blocking portion is mounted on a first side of the second lens group for blocking light rays from passing through a gap between the first side of the second lens group and an inner wall of the mounting portion; a first anti-reflection structure is arranged on a side wall of a side of the first light blocking portion close to the light receiving portion, and the first anti-reflection structure is used for dispersing light rays reflected from the light receiving portion to the side of the first light blocking portion close to the light receiving portion.

2. The camera module of claim 1, wherein, The light receiving portion comprises a light filtering portion and a light sensing portion which are sequentially arranged along the incident direction of the optical path, the light filtering portion is arranged at one end of the receiving window close to the lens group mounting cylinder, and a first light shielding portion is arranged on a light incident surface of the light filtering portion in a circumferential direction, and the first light shielding portion is used for blocking light rays from being incident on an edge of the receiving window.

3. The camera module of claim 1, wherein, A first reinforcing sheet is arranged at a bottom of the first lens group, a first giving-way opening is arranged on a side of the first reinforcing sheet close to the incident portion, and a first anti-reflection portion is arranged on a region of an inner wall of the lens group mounting cylinder corresponding to the first giving-way opening, and the first anti-reflection portion is used for receiving light rays passing through the first giving-way opening.

4. The camera module of claim 3, wherein, A second reinforcing sheet is arranged at a bottom of the second lens group, a second giving-way opening is arranged on a side of the second reinforcing sheet close to the light receiving portion, and a second anti-reflection portion is arranged on a region of the inner wall of the lens group mounting cylinder corresponding to the second giving-way opening, and the second anti-reflection portion is used for receiving light rays passing through the second giving-way opening.

5. The camera module of claim 1, wherein, The mounting portion comprises an incident mounting assembly, the incident portion comprises a prism mounted on the incident mounting assembly, the prism has an incident surface and an exit surface, the exit surface faces the first lens group, at least one edge of the prism is arranged as a tangent plane, and a third anti-reflection portion is arranged on the tangent plane.

6. The camera module of claim 5, wherein, A circumferential silk printing structure is arranged on the incident surface of the prism, the circumferential silk printing structure extends along a circumferential direction of the incident surface, and / or an exit surface of the prism is provided with a circumferential silk printing structure, and the circumferential silk printing structure extends along a circumferential direction of the exit surface.

7. The camera module of claim 6, wherein, A light transmission area is formed in a middle part of the circumferential silk printing structure, and the light transmission area is a symmetrical shape with a main optical axis of the prism as a center.

8. The camera module of claim 7, wherein, A second light blocking portion is arranged on the incident mounting assembly, the second light blocking portion comprises a light blocking structure, and the light blocking structure is arranged on a side of a gap between the exit surface of the prism and the first lens group close to the incident surface, and is used for blocking light rays from entering the gap between the exit surface of the prism and the first lens group.

9. The camera module of claim 8, wherein, The second light-blocking part comprises a circumferential light-blocking piece arranged along the circumference of the incident surface, and the light-blocking structure is arranged on the circumferential light-blocking piece.

10. The camera module of claim 4, wherein, The first displacement opening is a circular arc opening or a rectangular opening; and the second displacement opening is a circular arc opening or a rectangular opening.

11. The camera module of claim 10, wherein, The inner side wall of the first displacement opening and / or the inner side wall of the second displacement opening is provided with a second anti-reflection structure.

12. The camera module of claim 1, wherein, The first light-blocking part comprises a light-blocking sheet made of a metal sheet.

13. The camera module of claim 12, wherein, The light-blocking sheet is provided with a first weight-reducing opening and a second weight-reducing opening, the first weight-reducing opening faces the light-receiving part, the second weight-reducing opening faces the first lens group, and the first anti-reflection structure is formed on the side wall of the first weight-reducing opening.

14. The camera module of claim 2, wherein, The circumferential surface of the light-emitting surface of the light-filtering part is provided with a second light-blocking part, and the light leakage area of the middle part of the second light-blocking part is smaller than that of the middle part of the first light-blocking part.

15. The camera module of claim 4, wherein, The first lens group comprises a first lens carrier and a plurality of first lenses mounted on the first lens carrier, the first reinforcing sheet is mounted on the second side of the first lens carrier, the second lens group comprises a second lens carrier and a plurality of second lenses mounted on the second lens carrier, the first light-blocking part is mounted on the first side of the second lens carrier, and the second reinforcing sheet is mounted on the second side of the second lens carrier.

16. The camera module of claim 1, wherein, The second lens group is movably mounted in the mounting part along the optical path direction, and the camera module further comprises a driving part mounted on the mounting part, an output end of the driving part is drivingly connected with the second lens group to drive the second lens group to move close to or away from the first lens group.

17. A long focus lens characterized by, The telephoto lens comprises a camera module and a viewfinder assembly arranged outside the incident part, wherein the camera module is any one of the camera modules according to claims 1 to 16.

18. An electronic device, comprising: The electronic device comprises a body and a camera module mounted on the body, the camera module is any one of the camera modules according to claims 1 to 17, the mounting part comprises an incident mounting assembly, the incident part comprises a prism mounted on the incident mounting assembly, the prism has an incident surface and an emitting surface, the incident surface is parallel to the plane where the X direction and the Y direction of the body are located, and the emitting surface is parallel to the Z direction of the body, wherein the thickness direction of the body is the Z direction of the body, the length direction of the body is the Y direction of the body, and the width direction of the body is the X direction of the body.

Images