Face recognition device

Abstract

The present invention belongs to the field of face recognition technology, and specifically discloses a face recognition device, including a camera and a light shielding member, the light shielding member including a light input portion and a light shielding member, the light input portion is arranged on the light input side of the camera, a light input hole is arranged on the light input portion, the light input hole is directly opposite to the lens of the camera, the light input range of the light input hole is smaller than the shooting range of the lens, the light shielding member is arranged along the outer circumference of the light input portion, and the light shielding range of the light shielding member is larger than the shooting range of the lens. By setting the light shielding member, the shooting range of the camera is reduced from the original shooting range of the lens to the light input range of the light input hole of the light input portion, and the light outside the light input range of the light input hole is blocked by the light shielding member to avoid the part of the light from entering the lens, thereby reducing the influence of the light outside the face range on the exposure time, increasing the collection of facial feature information, and improving the face recognition efficiency and recognition accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of face recognition, and in particular to a face recognition device. Background Art

[0002] Face recognition is a biometric technology that identifies people based on their facial features. It uses a camera or a webcam to capture images or video streams containing faces, automatically detects and tracks faces in images, and then performs face recognition on the detected faces. This is also commonly known as portrait recognition and facial recognition. Face recognition technology has been widely used in payment, unlocking, and attendance.

[0003] The cameras used in some face recognition devices use global sampling and perform AE (auto exposure) operations. Under backlight conditions (i.e., the background brightness is high), the exposure value fed back to the image sensor in the camera is large, and the image signal processing unit will reduce the exposure time accordingly, resulting in insufficient exposure of the face, affecting the collection of facial feature information, making the face recognition effect unsatisfactory, and affecting the accuracy of face recognition. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a face recognition device that can accurately collect face information under backlight conditions and has high face recognition accuracy.

[0005] To achieve this purpose, the embodiment of the present invention adopts the following technical solutions:

[0006] A face recognition device is provided, comprising a camera and a light shielding member, wherein the light shielding member comprises a light input portion and a light shielding portion, the light input portion is arranged on the light input side of the camera, a light input hole is arranged on the light input portion, the light input hole is directly opposite to the lens of the camera, a light input range of the light input hole is smaller than the shooting range of the lens, the light shielding member is arranged along the outer circumference of the light input portion, and the light shielding range of the light shielding member is larger than the shooting range of the lens.

[0007] The beneficial effect of the embodiment of the present invention is as follows: by setting the shading member, the shooting range of the camera is reduced from the original shooting range of the lens to the light entry range of the light entry hole of the light entry part, and the light outside the light entry range of the light entry hole is blocked by the shading member to prevent the light from entering the lens. When performing face recognition, when the distance between the face and the light entry part is within a certain range, the light entry range of the light entry hole is slightly larger than the face area, that is, the face occupies most of the light entry range of the light entry hole, reducing the collection of light outside the face range, so that the exposure value fed back to the image sensor in the camera is reduced, and the image signal processing unit adjusts and extends the exposure time accordingly, so that more light reflected by the face passes through the lens for imaging, increasing the collection of facial feature information, and improving face recognition efficiency and recognition accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0009] Figure 1 A front view of a face recognition device according to an embodiment of the present invention;

[0010] Figure 2 A top view of a face recognition device according to an embodiment of the present invention;

[0011] Figure 3 for Figure 1 Sectional view at AA in the middle;

[0012] Figure 4 for Figure 3 Schematic diagram of the local structure in ;

[0013] Figure 5 A first isometric view of a light shielding member according to an embodiment of the present invention;

[0014] Figure 6 A second isometric view of the light shielding member according to an embodiment of the present invention;

[0015] Figure 7 is a first isometric view of a light shielding member according to another embodiment of the present invention;

[0016] Figure 8 A second isometric view of a light shielding member according to another embodiment of the present invention;

[0017] Fig. 9 A schematic diagram of the connection between the shading member and the transparent mounting plate according to an embodiment of the present invention;

[0018] Fig.10 is a schematic diagram of a second positioning member according to an embodiment of the present invention;

[0019] Fig.11 FIG. 4 is a schematic diagram of the size design of the light entrance hole according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] 100, display screen; 200, face; 1, camera; 11, lens; 2, light shielding member; 21, light entrance portion; 211, light entrance hole; 22, light shielding portion; 221, light shielding body; 2211, first light shielding body; 2212, second light shielding body; 222, connecting body; 23, reinforcing ribs; 3, display panel; 4, transparent cover; 41, transparent display panel; 42, transparent mounting plate; 421, accommodating cavity; 5, frame; 6, first positioning member; 61, first connecting portion; 62, first positioning portion; 7, second positioning member; 71, second positioning portion; 711, positioning hole; 72, second connecting portion. DETAILED DESCRIPTION

[0022] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] like Figure 1-Figure 11 As shown, this embodiment provides a face recognition device, including a camera 1 and a light shielding member 2. The light shielding member 2 includes a light input portion 21 and a light shielding member 22. The light input portion 21 is arranged on the light input side of the camera 1, and a light input hole 211 is arranged on the light input portion 21. The light input hole 211 is directly opposite to the lens 11 of the camera 1, and the light input range of the light input hole 211 is smaller than the shooting range of the lens 11. The light shielding member 22 is arranged along the outer circumference of the light input portion 21, and the light shielding range of the light shielding member 22 is larger than the shooting range of the lens 11.

[0026] By providing the shading member 2, the shooting range of the camera 1 is changed from the original shooting range of the lens 11 ( Figure 4 The light incident range of the light incident hole 211 of the light incident portion 21 is reduced to ( Figure 4Indicated by double-dotted lines in the figure), the light outside the light entry range of the light entry hole 211 is blocked by the light shielding portion 22 to prevent this part of the light from entering the lens 11. When performing face recognition, when the distance between the face and the light entry portion 21 is within a certain range, the light entry range of the light entry hole 211 is slightly larger than the face area, that is, the face 200 occupies most of the light entry range of the light entry hole 211, reducing the collection of light outside the range of the face 200, so that the exposure value fed back to the image sensor in the camera 1 is reduced, and the image signal processing unit adjusts and extends the exposure time accordingly, so that more light reflected by the face 200 passes through the lens 11 for imaging, increasing the collection of feature information of the face 200, and improving the efficiency and accuracy of face recognition.

[0027] The face recognition device of this embodiment is particularly suitable for use under strong light conditions, and can effectively solve the problem of blackening of the face 200 image collected under backlight conditions. The face recognition device of this embodiment is also suitable for installation conditions where the installation position is fixed and the shooting angle of the camera 1 cannot be changed by adjusting its own position. In addition, the camera 1 in the face recognition device of this embodiment can be an HDR wide dynamic camera or an ordinary camera. Ordinary cameras include cameras that use global sampling and perform AE (automatic exposure) operations.

[0028] Specifically, the light entrance hole 211 includes a first end and a second end opposite to each other, and the first end is located between the lens 11 and the second end. External light enters the light entrance hole 211 from the second end of the light entrance hole 211, and is incident on the lens 11 through the first end of the light entrance hole 211. From the first end to the second end, the size of the light entrance hole 211 gradually increases, ensuring that the light within the light entrance range can smoothly enter the lens 11 through the light entrance hole 211. In one embodiment, the light entrance hole 211 is a tapered hole with a simple structure and easy processing. At the same time, the tapered light entrance hole 211 also has a certain drainage function to prevent rainwater from accumulating in the light entrance hole 211.

[0029] The light shielding portion 22 includes a light shielding body 221 and a connecting body 222. The light shielding body 221 is connected to the outer circumference of the light input portion 21 to block the light outside the light input range of the light input hole 211 to prevent the light from entering the lens 11. The connecting body 222 is connected to the camera 1. The light shielding body 221 is connected to the end of the light input portion 21 away from the camera 1. In one embodiment, see Figure 5 and Figure 6 As the distance from the camera 1 increases, the cross-sectional size of the light shielding body 221 gradually decreases, reducing the protrusion of the light shielding member 2 on the light incident side of the camera 1 and improving the aesthetics of the product. The entire light shielding body 221 looks like a conical cover with a hole in the middle. In another embodiment, see Figure 7 and Figure 8The light shielding body 221 includes a first light shielding body 2211 and a second light shielding body 2212 connected at an angle, the first light shielding body 2211 is connected to the outer circumference of the light incident portion 21, and the second light shielding body 2212 is connected to the connecting body 222. The structure of the entire light shielding member 2 is more three-dimensional, which is convenient for users to hold and install the light shielding member 2. Exemplarily, the first light shielding body 2211 is parallel to the incident side of the lens 11, the second light shielding body 2212 is vertically connected to the first light shielding body 2211, and the connecting body 222 is vertically connected to the second light shielding body 2212. The inner wall of the light shielding body 221 is provided with a reinforcing rib 23 to improve the structural strength of the light shielding body 221.

[0030] The face recognition device of this embodiment further includes a transparent mounting plate 42. The camera 1 is connected to one side of the transparent mounting plate 42, and the light shielding member 2 is connected to the other side of the transparent mounting plate 42. External light enters the light entrance hole 211 from the second end of the light entrance hole 211, and then passes through the transparent mounting plate 42 from the first end of the light entrance hole 211 and is incident on the lens 11. The transparent mounting plate 42 serves as a mounting carrier, and the camera 1 and the light shielding member 2 are respectively mounted on the transparent mounting plate 42, so that the camera 1 and the light shielding member 2 can be easily replaced and repaired.

[0031] In other embodiments, the camera 1 includes a transparent protective cover, which is arranged on the light incident side of the lens 11, and the shading member 2 is installed on the side of the protective cover away from the lens 11, so that the shading member 2 is directly connected to the camera 1 without the need for an additional adapter.

[0032] Optionally, the connecting body 222 is bonded to the transparent mounting plate 42 or the protective cover plate by adhesive backing, which has high assembly efficiency, does not require connecting parts, and does not require connecting holes to be opened on the connecting body 222, the transparent mounting plate 42 or the protective cover plate, thereby ensuring the structural integrity of the connecting body 222, the transparent mounting plate 42 and the protective cover plate and extending the service life of the product.

[0033] Preferably, the connecting body 222 is an annular structure, which increases the connection area between the connecting body 222 and the transparent mounting plate 42, thereby improving the connection stability between the light shielding member 2 and the transparent mounting plate 42. In this embodiment, the light shielding body 221 is connected to the outer circumference of the end of the light input portion 21 away from the camera 1, and the annular connecting body 222 is connected to the circumference of the end of the light shielding body 221 close to the camera 1, thereby achieving the sealing of the space formed between the light shielding body 221, the light input portion 21 and the transparent mounting plate 42, preventing external light from entering the space and being incident on the lens 11 from the space to affect the accuracy of face recognition.

[0034] In other embodiments, the connecting body 222 does not have to be connected to the transparent mounting plate 42 , or the connecting body 222 does not have to be provided, as long as the size of the shading body 221 is large enough and can block external light outside the light input range of the light input hole 211 from entering the lens 11 .

[0035] See also Fig. 9 The face recognition device may further selectively include a transparent first positioning member 6. The first positioning member 6 includes a first connecting portion 61 and a first positioning portion 62 connected to each other. The first connecting portion 61 is connected to the transparent mounting plate 42, and the first positioning portion 62 is inserted and connected to the light entrance hole 211, so as to realize the installation and positioning of the light shielding member 2 on the transparent mounting plate 42, facilitate installation, and ensure that the light entrance hole 211 is directly opposite to the lens 11, thereby improving the recognition accuracy.

[0036] In one embodiment, a housing cavity 421 is provided on the transparent mounting plate 42, and a first connecting portion 61 is provided in the housing cavity 421, so as to realize the installation and positioning of the first positioning member 6 on the transparent mounting plate 42, thereby ensuring the installation accuracy of the subsequent shading member 2. The housing cavity 421 can be a structure of a housing groove or a housing hole provided on the transparent mounting plate 42, which is not limited here. The material of the transparent mounting plate 42 is preferably tempered glass with good light transmittance. The housing cavity 421 is formed before the glass is tempered, rather than being cut and formed on the tempered glass. Exemplarily, the first connecting portion 61 can be bonded to the cavity wall of the housing cavity 421 by optically transparent adhesive. The material of the first positioning member 6 is also preferably tempered glass with good light transmittance.

[0037] In this embodiment, the face recognition device further includes a display screen 100 and a main control chip. The display screen 100 and the camera 1 are both electrically connected to the main control chip. The display screen 100 is used to display the image information collected and recognized by the camera 1, and the person being recognized can see the collected image of his own face 200 on the display screen 100.

[0038] See also Figure 1-Figure 4 The display screen 100 includes a display panel 3, a transparent cover plate 4 and a frame 5. The transparent cover plate 4 includes a connected transparent display plate 41 and the above-mentioned transparent mounting plate 42. The transparent display plate 41 is arranged on the display side of the display panel 3. The transparent mounting plate 42 is obtained by extending outward from the side of the transparent display plate 41. The camera 1 is arranged on a side of the transparent mounting plate 42 close to the display panel 3, and the shading member 2 is arranged on a side of the transparent mounting plate 42 away from the display panel 3. The frame 5 is arranged along the circumference of the transparent cover plate 4 and connects the transparent cover plate 4 and the display panel 3.

[0039] In one embodiment, see Fig.10, the face recognition device includes a second positioning member 7. The second positioning member 7 is connected to the outer side of the transparent mounting plate 42 (i.e., the side of the transparent mounting plate 42 away from the display panel 3), and the second positioning member 7 includes a second positioning portion 71, and the second positioning portion 71 is provided with a positioning hole 711, and the second positioning portion 71 is sleeved on the outside of the shading member 2 through the positioning hole 711. During assembly, the second positioning member 7 is first installed on the outer side of the transparent mounting plate 42, and then the shading member 2 is partially inserted into the positioning hole 711 and connected to the transparent mounting member. The second positioning member 7 locates the installation position of the shading member 2 on the transparent mounting member through the positioning hole 711, improves the installation accuracy of the shading member 2, ensures that the light entrance hole 211 of the shading member 2 is directly opposite to the lens 11, and improves the recognition accuracy and assembly efficiency. Exemplarily, the shape of the positioning hole 711 is adapted to the outer peripheral contour of the connecting body 222, and the connecting body 222 of the shading member 2 is inserted into the positioning hole 711 and connected to the transparent mounting plate 42.

[0040] The second positioning portion 71 is preferably made of a transparent material, so that the user cannot easily perceive the existence of the second positioning portion 71, thereby improving the aesthetics of the product. Optionally, a side surface of the second positioning portion 71 connected to the transparent mounting plate 42 is provided with adhesive, and the second positioning portion 71 is connected to the transparent mounting plate 42 through the adhesive, without the need for connectors, and has high assembly efficiency.

[0041] Preferably, the second positioning member 7 also includes a third positioning portion (not shown). A first indication structure is provided on the third positioning portion, and a second indication structure is provided on the frame 5, and the first indication structure cooperates with the second indication structure. Through the cooperation of the first indication structure and the second indication structure, the installation and positioning of the entire second positioning member 7 on the display screen 100 is realized, and the installation accuracy of the second positioning member 7 on the display screen 100 is ensured, especially the installation accuracy of the second positioning portion 71 on the transparent mounting plate 42, thereby ensuring the installation accuracy of the subsequent shading member 2 on the transparent mounting plate 42, so that the light entrance hole 211 is directly opposite to the lens 11, ensuring the full collection of the feature information of the face 200, and improving the recognition accuracy.

[0042] Exemplarily, the second indication structure is a LOGO set on the frame 5, the third positioning part includes a connected light-transmitting body and a non-light-transmitting positioning body, the first indication structure includes a light-transmitting body, the pattern of the light-transmitting body is the same as the pattern of the LOGO, and when the light-transmitting body is facing the LOGO, it indicates that the second positioning member 7 is installed in place. Optionally, the positioning body includes a light-transmitting layer and a non-light-transmitting layer. The light-transmitting layer and the light-transmitting body are an integrated transparent film structure, and the non-light-transmitting layer can be printed on the transparent film by screen printing, and the unprinted area is the light-transmitting body.

[0043] In other embodiments, the second indication structure is a LOGO set on the frame 5, and the first indication structure includes a hollow structure set on the third positioning portion, the hollow structure has the same pattern as the LOGO, the hollow structure is opposite to the LOGO, or the third positioning portion is connected with the LOGO through the hollow structure, indicating that the second positioning member 7 is installed in place.

[0044] Optionally, when the LOGO includes multiple units (such as digital units, letter units), the light-transmitting body or hollow structure can be set to correspond to one or more of the units. Exemplarily, the LOGO includes multiple letter units, and the pattern of the light-transmitting body or hollow structure is the same as the shape of one or more of the letters.

[0045] The second positioning member 7 further includes a transparent second connecting portion 72, which is connected to the second positioning portion 71. The second connecting portion 72 and the second positioning portion 71 are preferably an integrated structure. The second connecting portion 72 can also be connected to the transparent mounting plate 42 and the frame 5 by adhesive. The third positioning portion is attached to the side of the second connecting portion 72 away from the display screen 100.

[0046] The third positioning part is preferably detachably connected to the second connecting part 72. When the second positioning member 7 is installed in place, the third positioning part is removed from the second connecting part 72, and only the transparent second connecting part 72 and the second positioning part 71 are retained on the display screen 100, so that the product is more beautiful. The third positioning part is preferably a release film, and the third positioning part can be torn off manually.

[0047] In one embodiment, the second connecting portion 72 may not be connected to the display screen 100, as long as the second positioning portion 71 is bonded to the transparent mounting plate 42. When the shading member 2 is installed in place, the second connecting portion 72 is manually lifted to separate the second positioning portion 71 from the transparent mounting plate 42, and finally the entire second positioning member 7 is torn off from the transparent mounting plate 42 to improve the aesthetics of the product.

[0048] In one embodiment, the shading member 2 is integrally injection molded, does not require a connector, has a simple manufacturing process, high production efficiency, and low production cost.

[0049] In order to facilitate face recognition, the face 200 of the person to be recognized can occupy most of the light incident range of the light incident hole 211, so as to reduce the influence of light outside the range of the face 200 on the recognition accuracy. The size of the light incident hole 211 needs to be specially designed. In this embodiment, the light incident hole 211 is a conical hole, and the center of the first end cross section coincides with the center of the second end cross section in the axial direction of the light incident hole 211 as an example to explain the size design of the light incident hole 211. For details, see Fig.11 .

[0050] It is assumed that before the shading piece 2 is installed, the central angle of the longitudinal section of the shooting range of the lens 11 is A; the length of the face 200 to be identified is P, and the distance from the face 200 to be identified to the lens 11 is D; after the shading piece 2 is installed, the central angle of the longitudinal section of the shooting range of the lens 11 is B, and the calculation formula of B is: B=2arctan(P / 2D).

[0051] Furthermore, the distance from the lens 11 to the center of the first end cross section of the light entrance hole 211 is set to d, and the diameter of the first end cross section of the light entrance hole 211 is set to W, then the calculation formula of W is: W = 2 × d × tan (B); or W = dP / D.

[0052] Exemplarily, the length of the general face 200 is between 180mm-200mm, and P is selected as 200mm; when performing face recognition, the distance from the face 200 to the outer side of the transparent mounting plate 42 (that is, the side of the transparent mounting plate 42 away from the display panel 3) is between 300mm-350mm, and D is selected as 325mm, then B is 28.03° and W is 8mm.

[0053] It should be noted that, since the distance from the lens 11 to the outer side surface of the transparent mounting plate 42 is much smaller than the distance from the face 200 to the outer side surface of the transparent mounting plate 42, the distance from the face 200 to the outer side surface of the transparent mounting plate 42 can be used as the distance from the face 200 to the lens 11.

[0054] Furthermore, assuming that the axial length of the light entrance hole 211 is L, and the diameter of the second end cross section of the light entrance hole 211 is M, we can obtain: (MW) / (2L)=tan(B). From this formula, it can be seen that when B and W are known, the relationship between L and M is uniquely determined, and the value of L can be selected according to the specific situation to obtain the value of M. After W, L and M are determined, the size of the tapered light entrance hole 211 is uniquely determined.

[0055] The light incident hole 211 obtained by the above calculation method can ensure that during face recognition, the face 200 of the person being recognized can occupy most of the light incident range of the light incident hole 211, reducing the influence of light outside the range of the face 200 on the recognition accuracy and improving the recognition accuracy.

[0056] In the description of this article, it is necessary to understand that the term "upper" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0057] In the description of this specification, the description of reference term "an embodiment" etc. means that the specific features, structures, materials or characteristics of the embodiment are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment.

[0058] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the purpose of clarifying the device. Those skilled in the art should take the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0059] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A face recognition device, characterized in that: The light shielding member includes a light input portion and a light shielding portion, the light input portion is arranged on the light input side of the camera, a light input hole is arranged on the light input portion, the light input hole is directly opposite to the lens of the camera, the light input range of the light input hole is smaller than the shooting range of the lens, the light shielding portion is arranged along the outer circumference of the light input portion, and the light shielding range of the light shielding portion is larger than the shooting range of the lens; The light entrance hole includes a first end and a second end opposite to each other, the first end is located between the lens and the second end, the distance from the lens to the center of the cross section of the first end of the light entrance hole is set to d, the central angle of the longitudinal section of the shooting range of the lens is set to B, the length of the face to be identified is set to P, the distance from the face to be identified to the lens is set to D, and the diameter of the cross section of the first end of the light entrance hole is set to W, then the calculation formula of W is: W=2×d×tan(B) or W=dP / D.

2. The face recognition device according to claim 1, characterized in that: The size of the light entrance hole gradually increases from the first end to the second end.

3. The face recognition device according to claim 2, characterized in that: The light entrance hole is a tapered hole.

4. The face recognition device according to claim 3, characterized in that: In the axial direction of the light entrance hole, the center of the cross section of the first end coincides with the center of the cross section of the second end, and the calculation formula of B is: B=2arctan(P / 2D).

5. The face recognition device according to claim 4, characterized in that: Assuming that the axial length of the light incident hole is L and the diameter of the cross section of the second end of the light incident hole is M, it can be obtained that: (MW) / (2L)=tan(B).

6. The face recognition device according to claim 1, characterized in that: The light shielding part includes a light shielding body and a connecting body which are connected to each other. The light shielding body is connected to the light incident part, and the connecting body is connected to the camera.

7. The face recognition device according to claim 6, characterized in that: As the distance from the camera increases, the cross-sectional size of the light shielding body gradually decreases; or, The light-shielding body comprises a first light-shielding body and a second light-shielding body connected at an angle, the first light-shielding body is connected to the light incident portion, and the second light-shielding body is connected to the connecting body.

8. The face recognition device according to claim 6, characterized in that: It also includes a transparent mounting plate, the camera is connected to one side of the transparent mounting plate, and the shading member is connected to the other side of the transparent mounting plate.

9. The face recognition device according to claim 8, characterized in that: The connecting body is bonded to the transparent mounting plate.

10. The face recognition device according to claim 1, characterized in that: It also includes a transparent mounting plate and a transparent first positioning member, the camera is connected to one side of the transparent mounting plate, the shading member is connected to the other side of the transparent mounting plate, the first positioning member includes a first connecting portion and a first positioning portion that are connected, the first connecting portion is connected to the transparent mounting plate, and the first positioning portion is inserted and connected to the light entrance hole.

11. The face recognition device according to claim 1, characterized in that: It also includes a display panel and a main control chip. The display panel and the camera are both electrically connected to the main control chip. The display panel is used to display image information collected by the camera.

12. The face recognition device according to claim 11, characterized in that: It also includes a transparent cover plate, which includes a connected transparent display plate and a transparent mounting plate, the transparent display plate is arranged on the display side of the display panel, the camera is arranged on the side of the transparent mounting plate close to the display panel, and the shading member is arranged on the side of the transparent mounting plate away from the display panel.

Images