Camera module and electronic equipment

Abstract

The invention provides a camera module and electronic equipment. The camera module comprises a spectroscope used for dividing a received light into a first light propagating along a first direction and a second light propagating along a second direction; the first photosensitive element is used for receiving the first light to form a first image; the second photosensitive element is used for receiving the second light to form a second image; the lens barrel comprises a barrel body and a first anti-reflection layer, the barrel body is provided with a first object side face, the first object side face is located on the object side of the spectroscope, the first anti-reflection layer is arranged on the first object side face, and the first anti-reflection layer is used for reducing the light reflectivity; the camera module comprises a first camera and a second camera, the first camera comprises a spectroscope and a first photosensitive element, and the second camera comprises a spectroscope and a second photosensitive element. The camera module provided by the invention can improve the shooting definition.

Description

Technical Field

[0001] The present application relates to the field of camera technology, and in particular to a camera module and electronic equipment. Background Art

[0002] As consumers' demand for camera functions in portable electronic devices increases day by day, mainstream electronic devices (such as mobile phones and tablets) are equipped with various cameras, such as wide-angle cameras. However, for wide-angle cameras, in backlit shooting scenes, the incident light is reflected by the lens barrel and the glass cover in front of the lens barrel to produce strong circular stray light, which will seriously affect the clarity of the photo. Summary of the invention

[0003] The present application provides a camera module and an electronic device that can improve shooting clarity.

[0004] In a first aspect, the present application provides a camera module, the camera module comprising:

[0005] A beam splitter, the beam splitter is used to split the received light into a first light propagating along a first direction and a second light propagating along a second direction;

[0006] A first photosensitive element, the first photosensitive element is used to receive the first light to form a first image;

[0007] a second photosensitive element, the second photosensitive element being configured to receive the second light to form a second image; and

[0008] A lens barrel, the lens barrel comprising a barrel body and a first anti-reflection layer, the barrel body having a first object side surface, the first object side surface being located on the object side of the beam splitter, the first anti-reflection layer being arranged on the first object side surface, and the first anti-reflection layer being used to reduce light reflectivity;

[0009] The camera module includes a first camera and a second camera, the first camera includes the beam splitter and the first photosensitive element, and the second camera includes the beam splitter and the second photosensitive element.

[0010] In a second aspect, the present application further provides an electronic device, comprising a device body and a camera module, wherein the camera module is installed on the device body.

[0011] In the camera module provided by the present application, the first camera and the second camera are integrated into one by sharing a beam splitter. Compared with the form of separately setting the first camera and the second camera, this also reduces the occupied volume of the two cameras. The application of the camera module to electronic devices is conducive to the lightweight design of electronic devices. In addition, since the first anti-reflection layer is provided on the first object side of the lens barrel, the reflectivity of light can be reduced by the first anti-reflection layer. When the camera module is applied to electronic devices, the generation of stray light can be avoided or weakened, thereby improving the shooting clarity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of circular stray light generated when shooting with a wide-angle camera in the related art.

[0014] Figure 2 A schematic diagram of a camera module provided in an embodiment of the present application.

[0015] Figure 3 A schematic diagram of another camera module provided in an embodiment of the present application.

[0016] Figure 4 A schematic diagram of a first aperture provided in an embodiment of the present application.

[0017] Figure 5 for Figure 4 The cross-sectional view of the first aperture along line AA is shown.

[0018] Figure 6 A schematic diagram of another camera module provided in an embodiment of the present application.

[0019] Figure 7 A schematic diagram of another camera module provided in an embodiment of the present application.

[0020] Figure 8 A schematic diagram of another camera module provided in an embodiment of the present application.

[0021] Fig. 9 A schematic diagram of another camera module provided in an embodiment of the present application.

[0022] Fig.10 A schematic diagram of another camera module provided in an embodiment of the present application.

[0023] Fig.11 A schematic diagram of an electronic device provided in an embodiment of the present application.

[0024] Fig.12 for Fig.11 A schematic diagram of the electronic device shown in another perspective.

[0025] Fig.13 A diagram showing the relative positions of the camera module and the battery cover provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] At present, in order to meet the photography needs of consumers, electronic devices such as mobile phones are equipped with not only wide-angle cameras but also telephoto cameras, so that users can shoot a variety of scenes such as natural scenery, cultural buildings, sports events, etc. However, the multiple camera modules (such as wide-angle cameras and telephoto cameras) on most electronic devices on the market are separated, occupying a lot of space and not conducive to thinness and lightness.

[0029] Please refer to Figure 1 ,exist Figure 1The dashed arrow in the middle represents light. For a wide-angle camera, in a backlit shooting scene, the incident light is reflected by the lens barrel 180” and the light-transmitting cover 232” (also referred to as a protective cover) in front of the lens barrel 180” to produce strong circular stray light. Specifically, after passing through the light-transmitting cover 232”, the incident light first shines on the lens barrel 180” and is then reflected by the lens barrel 180”. The light reflected by the lens barrel 180” is emitted back to the light-transmitting cover 232” and then reflected by the light-transmitting cover 232”, and finally enters the lens 190” in the camera, thereby forming circular stray light. Since the wide-angle camera has a larger field of view, these circular stray lights will also appear in the field of view, which seriously affects the clarity of the photo. For a telephoto camera, due to its smaller field of view, the above-mentioned stray light will not or will be less likely to appear in the field of view.

[0030] Please refer to Figure 2 It should be noted that in Figure 2 In the related figures below, the dashed arrows all represent light rays. The present application provides a camera module 10 , which includes: a beam splitter 110 , a first photosensitive element 130 , a second photosensitive element 150 , and a lens barrel 180 .

[0031] The beam splitter 110 is used to split the received light into a first light propagating along a first direction F1 and a second light propagating along a second direction F2. The first photosensitive element 130 is used to receive the first light to form a first image. The second photosensitive element 150 is used to receive the second light to form a second image. The lens barrel 180 includes a barrel 181 and a first anti-reflection layer 182. The barrel 181 has a first object side surface M1, and the first object side surface M1 is located on the object side of the beam splitter 110. The first anti-reflection layer 182 is arranged on the first object side surface M1, and the first anti-reflection layer 182 is used to reduce the reflectivity of light. The camera module 10 includes a first camera and a second camera, and the first camera includes the beam splitter 110 and the first photosensitive element 130. The second camera includes the beam splitter 110 and the second photosensitive element 150. Among them, the first camera can be a telephoto camera, and the second camera can be a wide-angle camera.

[0032] To facilitate the subsequent explanation, Figure 2 The perspective shown defines an XYZ space rectangular coordinate system, wherein the X axis is parallel to the propagation direction of the first light (i.e., the length direction of the camera module 10), the Y axis is parallel to the propagation direction of the second light (i.e., the height direction of the camera module 10), the Z axis is perpendicular to the X axis and the Y axis, the direction indicated by the arrow of the X / Y / Z axis is the positive direction of the X / Y / Z axis, and the opposite direction to the direction indicated by the arrow of the X / Y / Z axis is the negative direction of the X / Y / Z axis. Please refer to this for the following description of the coordinate system.

[0033] The beam splitter 110 may also be referred to as a beam splitter. The beam splitter 110 may be a prism structure (eg Figure 2 As shown), it can also be a plane mirror structure (as shown Figure 3 ). The beam splitter 110 can split a beam of light into transmitted light and reflected light, that is, after the light passes through the beam splitter 110, it will form two parts of light with different propagation directions, one part of the light is transmitted through the beam splitter 110, and the other part of the light is reflected by the beam splitter 110, thereby forming a first light and a second light. In the present application, the first light is described as the reflected light and the second light is described as the transmitted light.

[0034] The first photosensitive element 130 and the second photosensitive element 150 may also be referred to as photosensitive chips or image sensors or sensors, which are used to receive light and convert light signals into electrical signals. The photosensitive chip may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS).

[0035] The barrel 181 of the lens barrel 180 is mainly used to carry the lens for optical imaging in the camera module 10. The barrel 181 is hollow inside, and the lens is arranged inside the barrel 181. The barrel 181 has a first light hole X1, and the external light enters the camera module 10 from the first light hole X1. Only part of the structure of the barrel 181 is illustrated in the drawings of the relevant embodiments of the present application. The barrel 181 has a first object side M1, and the first object side M1 refers to the object side surface of the barrel 181, and the object side of the barrel 181 refers to the side of the barrel 181 close to the object to be photographed. The first object side M1 is annular, and it surrounds the first light hole X1. A first anti-reflection layer 182 is provided on the first object side M1, and the function of the first anti-reflection layer 182 is to absorb light and reduce reflection, and its color is black. The first anti-reflection layer 182 may be, but is not limited to, an ultra-black fiber layer. From a manufacturing perspective, ultra-black fibers can be adsorbed onto the first object side surface M1 of the barrel 181 under the action of static electricity, so that the ultra-black fibers are adhered by the glue on the first object side surface M1, thereby forming an ultra-black fiber layer. By providing the ultra-black fiber layer, the reflectivity of the lens barrel 180 to light can be reduced from more than 1% to less than 0.1%.

[0036] In summary, in the camera module 10 provided in the present application, the first camera and the second camera are integrated into one by sharing the beam splitter 110. Compared with the form of separately setting the first camera and the second camera, this also reduces the occupied volume of the two cameras. The application of the camera module 10 to electronic devices is conducive to the lightweight design of electronic devices. In addition, since the first anti-reflection layer 182 is provided on the first object side M1 of the lens barrel 180, the reflectivity of light can be reduced by the first anti-reflection layer 182. When the camera module 10 is applied to electronic devices, the generation of stray light can be avoided or weakened, thereby improving the shooting clarity.

[0037] It should be noted that the present application is only exemplified by one beam splitter 110. In other embodiments, the camera module 10 may also include two or more beam splitters 110 to form three or more propagation paths of light, and finally form three or more cameras. For example, two beam splitters 110 can form three cameras, and three beam splitters 110 can form four cameras. For example, the camera module includes two beam splitters, a first photosensitive element, a second photosensitive element, and a third photosensitive element. The two beam splitters are respectively a first beam splitter and a second beam splitter. Among them, the first beam splitter is used to split the light from the outside into a first light and a second light, and the second beam splitter is arranged on the propagation path of the second light, and is used to split the second light into a first sub-light and a second sub-light. The first photosensitive element is used to form a first image using the first light. The second photosensitive element is used to form a second image using the first sub-light. The third photosensitive element is used to form a third image using the second sub-light. The first beam splitter and the first photosensitive element together constitute the first camera. The first beam splitter, the second beam splitter, and the second photosensitive element together constitute the second camera. The first beam splitter, the second beam splitter and the third photosensitive element together constitute the third camera.

[0038] Please refer to Figures 2 to 5, the first camera also includes a first aperture G1, which is arranged between the beam splitter 110 and the first photosensitive element 130, and is used to control the amount of the first light passing through. The first aperture G1 includes a first straight edge Y1, a first circular edge Y2, a second straight edge Y3, and a second circular edge Y4 connected in sequence, and the first straight edge Y1, the first circular edge Y2, the second straight edge Y3, and the second circular edge Y4 are collectively arranged to form a second light hole X2, and the first light passes through the second light hole X2. Among them, the first straight edge Y1 and the second straight edge Y3 are arranged oppositely and are in the shape of straight strips. The first circular edge Y2 and the second circular edge Y4 are arranged oppositely and are in the shape of circular arcs. The relative direction of the first straight edge Y1 and the second straight edge Y3 is the same as the relative direction of the second photosensitive element 150 and the beam splitter 110 (hereinafter, the relative direction of the second photosensitive element 150 and the beam splitter 110 is referred to as the preset direction, that is, the Y-axis direction). It can be understood that, since the first straight side Y1 and the second straight side Y3 are both in the shape of straight strips, the size of the first aperture G1 in the preset direction can be reduced, thereby reducing the size of the first camera in the preset direction.

[0039] Through research, it is found that in the backlit shooting scene, the first light propagating along the first direction F1 will be reflected by the first straight edge Y1 and the second straight edge Y3 after reaching the first aperture G1, and then diffraction will occur, and this diffraction behavior will cause long strips of stray light, which will seriously affect the shooting clarity of the first camera. This application solves this problem through the following solution.

[0040] Please refer to Figure 5 , the first aperture G1 includes an aperture body G11 and a second anti-reflection layer G12. The aperture body G11 has a second object side surface M2, which refers to the object side surface of the aperture body G11, and the object side of the aperture body G11 refers to the side of the aperture body G11 close to the object to be photographed. The second anti-reflection layer G12 is arranged on the second object side surface M2, and the second anti-reflection layer G12 is used to reduce the reflectivity of light. The color of the second anti-reflection layer G12 is black, and it can be but not limited to an ultra-black fiber layer. From a manufacturing perspective, ultra-black fibers can be adsorbed onto the second object side surface M2 of the aperture body G11 under the action of static electricity, so that the ultra-black fibers are adhered by the glue on the second object side surface M2, thereby forming an ultra-black fiber layer. By providing an ultra-black fiber layer, the reflectivity of the first aperture G1 to light can be reduced from more than 1% to less than 0.1%. In this embodiment, by providing a second anti-reflection layer G12 on the second object-side surface M2 of the aperture body G11, the reflectivity of the first aperture G1 to the first light can be reduced, thereby avoiding or weakening the generation of long stray light, thereby improving shooting clarity.

[0041] Please refer to Figure 2The second camera further includes a second aperture G2, which is disposed between the second photosensitive element 150 and the beam splitter 110. The second aperture G2 is used to control the amount of the second light passing through. The second aperture G2 is annular, and the straight strip structure similar to the first straight edge Y1 and the second straight edge Y3 is not provided. In this way, the second aperture G2 does not generate long strip stray light.

[0042] Please refer to Figure 2 The first camera further includes a first lens 120, which is disposed between the beam splitter 110 and the first photosensitive element 130, and is used to focus the first light on the first photosensitive element 130. The first lens 120 includes at least one lens, and the number of the lenses may be, but is not limited to, 1, 2, 3, 4, 5, etc.

[0043] Please refer to Figure 2 The second camera further includes a second lens 140, which is disposed between the beam splitter 110 and the second photosensitive element 150, and is used to focus the second light on the second photosensitive element 150. The second lens 140 includes at least one lens, and the number of the lens may be, but is not limited to, 1, 2, 3, 4, 5, etc.

[0044] Please refer to Figure 2 The camera module 10 further includes a third lens 190, which is disposed on the object side of the beam splitter 110. In other words, the first camera and the second camera share the third lens 190. The third lens 190 includes at least one lens, and the number of the third lens 190 may be, but is not limited to, 1, 2, 3, 4, 5, etc.

[0045] Please refer to Figure 2 Optionally, the second camera further includes an intermediate lens 160, and the intermediate lens 160 is disposed between the beam splitter 110 and the second lens 140. The intermediate lens 160 and the beam splitter 110 are both prisms and together form a cube shape.

[0046] Specifically, the beam splitter 110 is a prism structure, which includes a first light incident surface 111, a first light emitting surface 112, and a second light emitting surface 113. External light enters the beam splitter 110 from the first light incident surface 111. When the light reaches the first light emitting surface 112, it is semi-transmitted and semi-reflected to form a first light and a second light with different propagation directions, that is, the first light emitting surface 112 is a beam splitting surface of the beam splitter 110. Among them, the first light is reflected by the first light emitting surface 112, and after passing through the second light emitting surface 113, it propagates toward the first lens 120 and finally reaches the first photosensitive element 130. The second light is transmitted from the first light emitting surface 112, and after passing through the intermediate lens 160 and the second lens 140 in sequence, it reaches the second photosensitive element 150. The intermediate lens 160 is a prism structure, which includes a second light incident surface 161 and a third light emitting surface 162, wherein the second light incident surface 161 is directly or indirectly attached to the first light incident surface 111, and the third light emitting surface 162 faces the second lens 140, and the light passing through the first light emitting surface 112 passes through the second light incident surface 161 and the third light emitting surface 162 in sequence before reaching the second lens 140. In this embodiment, since the first light emitting surface 112 and the second light incident surface 161 are the inclined surfaces of the beam splitter 110 and the intermediate lens 160, respectively, the beam splitter 110 and the intermediate lens 160 together form a cubic shape, and such a configuration facilitates the alignment and installation of the second camera to ensure that the optical axis of the second camera and the optical axis of the beam splitter 110 have a high degree of overlap.

[0047] Optionally, the second lens 140 is attached to the middle lens 160. This is beneficial to the installation and positioning of the second lens 140, so as to ensure that the optical axis of the second lens 140 and the optical axis of the middle lens 160 have a high degree of overlap.

[0048] Please refer to Figure 6 , the first camera may further include a reflector 170, the reflector 170 is disposed on the side of the first lens 120 away from the beam splitter 110, and the reflector 170 is used to reflect the first light from the first lens 120 to the first photosensitive element 130. That is to say, the reflector 170 is disposed between the first lens 120 and the first sensor, and the first light reaches the first sensor after passing through the first lens 120, and is then reflected by the first sensor to generate a 90° bend, and the reflected first light is finally transmitted to the first photosensitive element 130. In this embodiment, the reflector 170 can bend the first light in the X direction, thereby reducing the size of the first camera module 10 in the X direction. It should be noted that the reflector 170 may be a prism (such as Figure 6 As shown), such as a right-angle prism, a pentagonal prism, or a plane mirror (such as Figure 7 shown).

[0049] In one embodiment, the direction of the reflector 170 toward the first photosensitive element 130 is opposite to the direction of the second lens 140 toward the second photosensitive element 150. That is, the reflector 170 and the first photosensitive element 130 are sequentially arranged along the positive direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the negative direction of the Y axis (e.g., Figure 6 and Figure 7 Alternatively, the reflector 170 and the first photosensitive element 130 are sequentially arranged along the negative direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the positive direction of the Y axis (as shown in FIG. Figure 8 shown).

[0050] In another embodiment, the direction of the reflector 170 toward the first photosensitive element 130 is the same as the direction of the second lens 140 toward the second photosensitive element 150. That is, the reflector 170 and the first photosensitive element 130 are sequentially arranged along the positive direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the positive direction of the Y axis (e.g. Fig. 9 Alternatively, the reflector 170 and the first photosensitive element 130 are sequentially arranged along the negative direction of the Y axis, and the second lens 140 and the second photosensitive element 150 are sequentially arranged along the negative direction of the Y axis (as shown in FIG. Fig.10 As shown). It can be understood that when "the direction of the reflector 170 toward the first photosensitive element 130 is the same as the direction of the second lens 140 toward the second photosensitive element 150", the size of the camera module 10 in the Y-axis direction can be reduced.

[0051] At present, the cameras of portable electronic devices mainly use visible light for imaging, and infrared filters are needed to cut off infrared light. The infrared filter is generally set opposite to the photosensitive element. However, the infrared filter not only occupies the volume of the camera module, but is also one of the main reasons why the module is difficult to miniaturize. In addition, in the backlit photography scene, the reflection of light between the infrared filter and the photosensitive element will produce petal-shaped stray light. Specifically, when the light passing through the infrared filter reaches the photosensitive element, the photosensitive element will reflect part of the light, and the light reflected by the photosensitive element will be reflected back to the infrared filter, and then reflected back to the photosensitive element by the infrared filter. This process will cause petal-shaped stray light that affects the clarity of the photo. The following is a solution to the above problem.

[0052] In one embodiment, a component capable of absorbing at least part of invisible light is added to the optical element in the first camera that is independent of the second camera. The component may be, but is not limited to, a pigment material, such as a pigment material capable of absorbing infrared light. The "optical element in the first camera that is independent of the second camera" refers to "an optical element that belongs to the first camera but not to the second camera, or an optical element that only participates in the imaging process of the first camera, such as the first photosensitive element 130 and the first lens 120". It can be understood that by adding a component capable of absorbing at least part of invisible light to the optical element in the first camera that is independent of the second camera, it is possible to avoid setting a filter in the first camera that is capable of absorbing invisible light and facing the first photosensitive element 130. In this way, it is possible to avoid reflection between the filter and the first photosensitive element 130 to generate petal-shaped stray light, thereby improving the shooting clarity of the first camera, and avoiding the filter from occupying space, thereby reducing the size of the first camera in the X-axis direction.

[0053] In one implementation of the above embodiment, optionally, a component capable of absorbing at least part of the invisible light is added to the first photosensitive element 130. Specifically, the first photosensitive element 130 includes a first microlens layer, a first RGB color filter layer, and a first photosensitive layer arranged in sequence. Among them, the first microlens layer is also called microlens, which is used to collect light; the first RGB color filter layer is used to pass light of one color among R, G, and B; and the first photosensitive layer is used to sense the light passing through the first RGB color filter layer. The component capable of absorbing at least part of the invisible light is added to the first microlens layer. When the first light passes through the first microlens layer, the invisible light in the first light is absorbed at least partly, so that most or all of the light received by the first photosensitive layer is visible light.

[0054] In another implementation of the above embodiment, optionally, the first camera further includes a first lens 120, the first lens 120 is disposed between the beam splitter 110 and the first photosensitive element 130, and a component capable of absorbing at least part of invisible light is added to the first lens 120. The first lens 120 includes at least one lens, and the component capable of absorbing at least part of invisible light is added to any one lens of the first lens 120 or to all lenses. When the first light passes through the first lens 120, the invisible light in the first light is absorbed at least partly, so that most or all of the light received by the first photosensitive element 130 is visible light.

[0055] Of course, in some implementations, components capable of absorbing at least part of invisible light may be added to both the first photosensitive element 130 and the first lens 120 , that is, the above two implementations are combined.

[0056] In the second embodiment, a component capable of absorbing at least part of the invisible light is added to the optical element in the second camera that is independent of the first camera. The component may be, but is not limited to, a pigment material, such as a pigment material capable of absorbing infrared light. The "optical element in the second camera that is independent of the first camera" refers to "an optical element that belongs to the second camera but not to the first camera, or in other words, an optical element that only participates in the imaging process of the second camera, such as the second photosensitive element 150, the second lens 140, and the intermediate lens 160". It can be understood that by adding a component capable of absorbing at least part of the invisible light to the optical element in the second camera that is independent of the first camera, it is possible to avoid setting a filter that faces the second photosensitive element 150 and can absorb the invisible light in the second camera. In this way, it is possible to avoid reflection between the filter and the second photosensitive element 150 to generate petal-shaped stray light, thereby improving the shooting clarity of the second camera, and avoiding the filter from occupying space, thereby reducing the size of the second camera in the Y-axis direction.

[0057] In one implementation of the above two embodiments, optionally, a component capable of absorbing at least part of the invisible light is added to the second photosensitive element 150. Specifically, the second photosensitive element 150 includes a second microlens layer, a second RGB color filter layer, and a second photosensitive layer arranged in sequence. Among them, the second microlens layer is also called microlens, which is used to collect light; the second RGB color filter layer is used to pass light of one color among R, G, and B; and the second photosensitive layer is used to sense the light passing through the second RGB color filter layer. The component capable of absorbing at least part of the invisible light is added to the second microlens layer. When the second light passes through the second microlens layer, the invisible light in the second light is absorbed at least partly, so that most or all of the light received by the second photosensitive layer is visible light.

[0058] In another implementation of the above two embodiments, optionally, the second camera further includes a second lens 140, the second lens 140 is disposed between the beam splitter 110 and the second photosensitive element 150, and a component capable of absorbing at least part of the invisible light is added to the second lens 140. The second lens 140 includes at least one lens, and the component capable of absorbing at least part of the invisible light is added to any one lens of the second lens 140 or to all lenses. When the second light passes through the second lens 140, the invisible light in the second light is at least partially absorbed, so that most or all of the light received by the second photosensitive element 150 is visible light.

[0059] Of course, in some implementations, components capable of absorbing at least part of the invisible light may be added to the second photosensitive element 150 and the second lens 140 at the same time, that is, the above two implementations are combined.

[0060] In the third embodiment, a component capable of absorbing at least part of the invisible light is added to the optical element shared by the first camera and the second camera, and the component may be, but is not limited to, a pigment material, such as a pigment material capable of absorbing infrared light. Among them, "the optical element shared by the first camera and the second camera" refers to "an optical element that belongs to both the first camera and the second camera, or in other words, an optical element that participates in the imaging process of the first camera and the imaging process of the second camera, such as the beam splitter 110 and the third lens 190". It can be understood that by adding a component capable of absorbing at least part of the invisible light to the optical element shared by the first camera and the second camera, the first camera and the second camera can be prevented from generating petal-shaped stray light when shooting against the light, thereby improving the shooting clarity of the first camera and the second camera at the same time, and the space occupied by the additional filter can be avoided at the same time, thereby reducing the size of the first camera in the X-axis direction and the size of the second camera in the Y-axis direction.

[0061] In one implementation of the above three embodiments, optionally, a component capable of absorbing at least part of invisible light is added to the beam splitter 110, wherein the beam splitter 110 is a prism structure (such as Fig.10 When the external light enters the beam splitter 110, the invisible light in the light is absorbed at least partially, so that the first light obtained by reflection and the second light obtained by transmission no longer contain or only contain a small amount of invisible light.

[0062] In another implementation of the above three embodiments, optionally, the camera module 10 further includes a third lens 190, the third lens 190 is disposed on the object side of the beam splitter 110, and a component capable of absorbing at least part of the invisible light is added to the third lens 190. The third lens 190 includes at least one lens, and the component capable of absorbing at least part of the invisible light is added to any one of the third lenses 190 or to all the lenses. When the external light passes through the third lens 190, the invisible light in the light is at least partially absorbed, so that most or all of the light received by the first photosensitive element 130 and the second photosensitive element 150 is visible light.

[0063] Of course, in some implementations, components capable of absorbing at least a portion of invisible light may be added to both the beam splitter 110 and the third lens 190 , that is, the above two implementations are combined.

[0064] It should be noted that the various implementations introduced in the first to third embodiments of “adding a component capable of absorbing at least part of invisible light” can be combined with each other if there is no conflict, and will not be described one by one here.

[0065] The camera module 10 provided in this application is introduced below with three groups of specific embodiments.

[0066] Embodiment 1

[0067] Please refer to Figure 2 The camera module 10 includes a first camera and a second camera, wherein the first camera is a telephoto camera and the second camera is a wide-angle camera. The first camera includes a third lens 190, a beam splitter 110, a first aperture G1, a first lens 120, and a first photosensitive element 130. The second camera includes a third lens 190, a beam splitter 110, an intermediate lens 160, a second aperture G2, a second lens 140, and a second photosensitive element 150. The beam splitter 110 may be a right-angle prism with a hypotenuse of 45°, or a semi-transparent and semi-reflective plane mirror inclined at 45°. External light enters from the third lens 190, and then semi-transparent and semi-reflective occurs at the first light-emitting surface 112 of the beam splitter 110, thereby forming a first light propagating along a first direction F1 and a second light propagating along a second direction F2. The first light passes through the first lens 120 and reaches the first photosensitive element 130. The second light passes through the intermediate lens 160 and the second lens 140 in sequence and reaches the second photosensitive element 150. The raw material of the third lens is added with a pigment material that absorbs infrared light to block the infrared light from entering the first photosensitive element 130 and the second photosensitive element 150. The first aperture G1 is provided with ultra-black fiber to reduce the stray light of the first camera.

[0068] In the technical solution adopted in Example 1, the first camera and the second camera share the third lens 190 and the beam splitter 110, which is equivalent to reducing the volume of the third lens 190 and the beam splitter 110 compared to the dual camera structure in which the wide-angle camera and the telephoto camera exist separately; and the third lens 190 can cut off infrared light, avoiding the increase in the volume of the camera module 10 caused by setting an infrared filter in the camera module 10; in addition, at least part of the first camera and at least part of the second camera are assembled into the same lens barrel 180, which can reduce the difference in tilt angles between the first camera and the second camera caused by separate assembly, thereby reducing the calibration error of the first camera and the second camera.

[0069] Embodiment 2

[0070] Please refer to Figure 6The camera module 10 includes a first camera and a second camera, wherein the first camera is a telephoto camera and the second camera is a wide-angle camera. The first camera includes a third lens 190, a beam splitter 110, a first aperture G1, a first lens 120, a first photosensitive element 130, and a reflector 170. The second camera includes a third lens 190, a beam splitter 110, an intermediate lens 160, a second aperture G2, a second lens 140, and a second photosensitive element 150. The beam splitter 110 may be a right-angle prism with a hypotenuse of 45°, or a semi-transparent and semi-reflective plane mirror inclined at 45°. The reflector 170 may be a right-angle prism with a hypotenuse of 45°, or a fully-reflective plane mirror inclined at 45°. The direction of the reflector 170 toward the first photosensitive element 130 is opposite to the direction of the second lens 140 toward the second photosensitive element 150. The external light enters from the third lens 190, and then is semi-transmitted and semi-reflected at the first light-emitting surface 112 of the beam splitter 110, thereby forming a first light propagating along the first direction F1 and a second light propagating along the second direction F2. Among them, the first light passes through the first lens 120 and is reflected by the reflector 170 to the first photosensitive element 130. The second light passes through the intermediate lens 160 and the second lens 140 in sequence and reaches the second photosensitive element 150. The raw material of the third lens is added with a pigment material that absorbs infrared light to cut off the infrared light from entering the first photosensitive element 130 and the second photosensitive element 150. The first aperture G1 is provided with an ultra-black fiber to reduce the stray light of the first camera.

[0071] In the technical solution adopted in the first embodiment, the first camera and the second camera share the third lens 190 and the beam splitter 110, which is equivalent to reducing the volume of the third lens 190 and the beam splitter 110 compared to the dual camera structure in which the wide-angle camera and the telephoto camera are separated; and the third lens 190 can cut off infrared light, avoiding the increase in the volume of the camera module 10 caused by setting an infrared filter in the camera module 10; in addition, at least part of the first camera and at least part of the second camera are assembled into the same lens barrel 180, which can reduce the difference in tilt angles caused by the separate assembly of the first camera and the second camera, thereby reducing the calibration error of the first camera and the second camera. Compared with the first embodiment, the first light in the second embodiment makes a 90-degree turn at the reflector 170, which also reduces the size of the camera module 10 in the X-axis direction.

[0072] Embodiment 2

[0073] Please refer to Fig.10The camera module 10 includes a first camera and a second camera, wherein the first camera is a telephoto camera and the second camera is a wide-angle camera. The first camera includes a third lens 190, a beam splitter 110, a first aperture G1, a first lens 120, a first photosensitive element 130, and a reflector 170. The second camera includes a third lens 190, a beam splitter 110, an intermediate lens 160, a second aperture G2, a second lens 140, and a second photosensitive element 150. The beam splitter 110 may be a right-angle prism with a hypotenuse of 45°, or a semi-transparent and semi-reflective plane mirror inclined at 45°. The reflector 170 may be a right-angle prism with a hypotenuse of 45°, or a total reflection plane mirror inclined at 45°. The direction of the reflector 170 toward the first photosensitive element 130 is the same as the direction of the second lens 140 toward the second photosensitive element 150. The external light enters from the third lens 190, and then is semi-transmitted and semi-reflected at the first light-emitting surface 112 of the beam splitter 110, thereby forming a first light propagating along the first direction F1 and a second light propagating along the second direction F2. Among them, the first light passes through the first lens 120 and is reflected by the reflector 170 to the first photosensitive element 130. The second light passes through the intermediate lens 160 and the second lens 140 in sequence and reaches the second photosensitive element 150. The raw material of the third lens is added with a pigment material that absorbs infrared light to cut off the infrared light from entering the first photosensitive element 130 and the second photosensitive element 150. The first aperture G1 is provided with an ultra-black fiber to reduce the stray light of the first camera.

[0074] In the technical solution adopted in the first embodiment, the first camera and the second camera share the third lens 190 and the beam splitter 110, which is equivalent to reducing the volume of the third lens 190 and the beam splitter 110 compared to the dual camera structure in which the wide-angle camera and the telephoto camera are separated; and the third lens 190 can cut off infrared light, avoiding the increase in the volume of the camera module 10 caused by setting an infrared filter in the camera module 10; in addition, at least part of the first camera and at least part of the second camera are assembled into the same lens barrel 180, which can reduce the difference in tilt angles caused by the separate assembly of the first camera and the second camera, thereby reducing the calibration error of the first camera and the second camera. Compared with the second embodiment, in the third embodiment, since the direction of the reflector 170 toward the first photosensitive element 130 is the same as the direction of the second lens 140 toward the second photosensitive element 150, the size of the camera module 10 in the Y-axis direction is reduced.

[0075] Please refer to Fig.11 and Fig.12 The present application provides an electronic device 100 , which includes a device body 20 and a camera module 10 described in any of the above embodiments, and the camera module 10 is installed on the device body 20 .

[0076] The electronic device 100 may be a mobile phone, a tablet computer, a laptop computer, a camera device, an ultra-mobile personal computer (UMPC), a wearable device (such as a smart watch, a bracelet, a VR device, etc.), a television, a vehicle-mounted device, an electronic reader, etc. It should be noted that the embodiment of the present application is only exemplified by taking the electronic device 100 as a mobile phone, but this should not be regarded as a limitation to the present application.

[0077] The device body 20 refers to the main part of the electronic device 100, which includes electronic components that realize the main functions of the electronic device 100 and mechanical structures that protect and carry these electronic components. Fig.12 As shown), the device body 20 may include a display screen 210, a middle frame 220, and a battery cover 230. The display screen 210 and the battery cover 230 are both connected to the middle frame 220 and are arranged on opposite sides of the middle frame 220.

[0078] Please refer to Fig.13 Optionally, the battery cover 230 includes a battery cover body 231 and a light-transmitting cover plate 232, and the light-transmitting cover plate 232 is connected to the battery cover body 231. The light-transmitting cover plate 232 can transmit light, and the light-transmitting cover plate 232 can be, but is not limited to, transparent glass, transparent plastic, etc. The camera module 10 is arranged facing the light-transmitting cover plate 232, and external light can pass through the light-transmitting cover plate 232 and enter the interior of the camera module 10. The lens barrel 180 of the camera module 10 faces the light-transmitting cover plate 232. As mentioned above, for a wide-angle camera, in a backlit shooting scene, if the first object side M1 of the lens barrel 180 directly faces the glass cover plate, circular stray light will be generated due to reflection. In the present application, a first anti-reflection layer 182 is provided on the first object side M1 of the lens barrel 180, and the reflectivity of light can be reduced by the first anti-reflection layer 182, thereby avoiding or weakening the generation of stray light, thereby improving the shooting clarity.

[0079] According to actual needs, the camera module 10 can be exposed on any side of the electronic device 100, and this application does not limit this. Taking a mobile phone as an example, the camera module 10 can be set on the front, back, and side of the mobile phone. Among them, the so-called front refers to the side of the mobile phone with a display screen 210; the so-called back refers to the side of the mobile phone with a battery cover 230; the so-called side refers to the circumferential side of the middle frame 220 of the mobile phone. It can be understood that the definition of the front, back, side, etc. of the electronic device 100 may be different for different types, and other types of electronic devices 100 are not described in detail here.

[0080] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. A camera module, characterized in that: The camera module comprises: A beam splitter, the beam splitter is used to split the received light into a first light propagating along a first direction and a second light propagating along a second direction; A first photosensitive element, the first photosensitive element is used to receive the first light to form a first image; a second photosensitive element, the second photosensitive element being configured to receive the second light to form a second image; and A lens barrel, the lens barrel comprising a barrel body and a first anti-reflection layer, the barrel body having a first object side surface, the first object side surface being located on the object side of the beam splitter, the first anti-reflection layer being arranged on the first object side surface, and the first anti-reflection layer being used to reduce light reflectivity; The camera module includes a first camera and a second camera, the first camera includes the beam splitter and the first photosensitive element, and the second camera includes the beam splitter and the second photosensitive element.

2. The camera module according to claim 1, wherein: The first camera also includes a first aperture, which is arranged between the beam splitter and the first photosensitive element. The first aperture includes a first straight edge, a first circular edge, a second straight edge, and a second circular edge connected in sequence. The relative direction of the first straight edge and the second straight edge is the same as the relative direction of the second photosensitive element and the beam splitter.

3. The camera module according to claim 2, wherein: The first aperture includes an aperture body and a second anti-reflection layer. The aperture body has a second object side surface. The second anti-reflection layer is arranged on the second object side surface. The second anti-reflection layer is used to reduce the reflectivity of light.

4. The camera module according to any one of claims 1 to 3, characterized in that: An optical element in the first camera that is independent of the second camera is added with a component capable of absorbing at least part of invisible light.

5. The camera module according to claim 4, characterized in that: The first photosensitive element is added with a component capable of absorbing at least part of invisible light; And / or, the first camera further includes a first lens, the first lens is disposed between the beam splitter and the first photosensitive element, and a component capable of absorbing at least part of invisible light is added to the first lens.

6. The camera module according to any one of claims 1 to 3, characterized in that: An optical element in the second camera which is independent of the first camera is added with a component capable of absorbing at least part of invisible light.

7. The camera module according to claim 6, characterized in that: The second photosensitive element is added with a component capable of absorbing at least part of invisible light; And / or, the second camera further includes a second lens, the second lens is disposed between the beam splitter and the second photosensitive element, and a component capable of absorbing at least part of invisible light is added to the second lens.

8. The camera module according to any one of claims 1 to 3, characterized in that: A component capable of absorbing at least a portion of invisible light is added to the optical element shared by the first camera and the second camera.

9. The camera module according to claim 8, wherein: The beam splitter has a component added thereto that can absorb at least part of the invisible light; And / or, the camera module further includes a third lens, the third lens is arranged on the object side of the beam splitter, and a component capable of absorbing at least part of invisible light is added to the third lens.

10. The camera module according to claim 1, wherein: The first camera is a telephoto camera, and the second camera is a wide-angle camera.

11. An electronic device, characterized in that: The electronic device comprises a device body and a camera module as described in any one of claims 1 to 10, and the camera module is installed on the device body.

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