A screenless face recognition device with integrated lens display area and indicator light

Abstract

This invention belongs to the technical field of image acquisition devices, and provides a screenless face recognition device with an integrated lens display area and indicator lights. It includes an optical PC sheet, a housing, an indicator light board, a bracket, light-blocking foam, and a lens plate. The housing has a light guide post, and the optical PC sheet has a lens transmission area, an infrared light transmission area, and an opaque area. The optical PC sheet is mounted on the light guide post, and the mounting joint is opaque. The indicator light board has multiple LED indicator lights and an infrared fill light, and the lens plate has a lens. The indicator light board and lens plate are respectively fixed to both ends of the bracket, which is located within the cavity of the housing. The end where the indicator light board is mounted is close to the light guide post. The light-blocking foam has adhesive backing; the adhesive side is bonded to the periphery of the lens, and the non-adhesive side contacts the optical PC sheet. This invention integrates the lens display area and indicator lights into one unit, effectively blocking interference light from entering the lens, improving aesthetics, and significantly enhancing the indicator light effect.

Description

Technical Field

[0001] This invention belongs to the field of image acquisition equipment technology, and particularly relates to a screenless face recognition device with an integrated design of lens display area and indicator light. Background Technology

[0002] Existing technologies for identity recognition include iris recognition, palmprint recognition, facial recognition, and fingerprint recognition. Among these, iris recognition is relatively expensive and is often used in higher-tech fields; fingerprint recognition is less accurate than facial recognition, and registration is impossible if the finger is damaged; palmprint recognition is bulky, taking up a lot of space on a table, wasting space and affecting aesthetics. Facial recognition is widely used in all aspects of human production and daily life.

[0003] Facial recognition is a biometric technology that identifies individuals based on their facial features. It uses cameras or webcams to capture images or video streams containing faces, automatically detects and tracks faces within the images, and then performs a series of related facial analysis techniques. Facial recognition is divided into screenless facial recognition and screen-based facial recognition, and is applied in different ways depending on the needs.

[0004] Currently, screenless recognition devices on the market have the following problems:

[0005] 1. In the market, the lens display area and indicator light of facial recognition devices are designed separately, which are a certain distance apart and affect the aesthetics.

[0006] 2. In the market, the lens and indicator light of facial recognition devices are far apart, and there is a risk of interference light entering the lens. Summary of the Invention

[0007] To overcome the shortcomings of the prior art, the present invention aims to provide a screenless face recognition device with an integrated design of lens display area and indicator light.

[0008] To achieve the above objectives, this application adopts the following technical solution:

[0009] This invention provides a screenless face recognition device with an integrated lens display area and indicator light, comprising an optical PC sheet, a housing, an indicator light board, a bracket, light-blocking foam, and a lens board;

[0010] The lens is provided on the lens plate, and the indicator light plate is provided with multiple LED indicator lights around its perimeter and an infrared fill light in the center position;

[0011] The optical PC sheet has a lens transmission area corresponding to the position of the lens and an infrared lamp transmission area corresponding to the position of the infrared fill light, and the remaining areas are opaque areas.

[0012] The housing is provided with a light guide post corresponding to the position of the LED indicator, and the optical PC sheet is mounted on the light guide post with the assembly joint being opaque.

[0013] The indicator light plate and the lens plate are respectively fixed to both ends of the bracket, which is located inside the cavity of the housing, with one end of the indicator light plate mounted close to the light guide post;

[0014] The light-blocking foam is semi-circular, with a notch for mounting the infrared filler lamp. A circular hole is provided in the middle to allow the lens to pass through. The light-blocking foam has an adhesive backing, with the adhesive side bonded to the periphery of the lens and the non-adhesive side in contact with the optical PC sheet.

[0015] In the above technical solution, the back of the opaque area of ​​the optical PC sheet is screen-printed and painted, and the sides of the optical PC sheet are also painted, with the paint layer preventing light from passing through.

[0016] In the above technical solution, the lens board is provided with a power signal socket, and the power signal socket is electrically connected to the indicator light board.

[0017] In the above technical solution, the inner circumference of the light guide post is recessed to form a PC sheet mounting part, the optical PC sheet is mounted on the PC sheet mounting part, and after the optical PC sheet is mounted on the PC sheet mounting part, the outer surface of the optical PC sheet is flush with the housing.

[0018] In the above technical solution, the outer circumference of the optical PC sheet is provided with a triangular positioning area, and the PC sheet mounting part of the light guide post is provided with a step that matches the shape of the triangular positioning area.

[0019] In the above technical solution, the triangular positioning area is painted, and the paint layer prevents light from passing through.

[0020] In the above technical solution, the assembly gap between the optical PC sheet and the lens is smaller than the thickness of the light-blocking foam, so that the light-blocking foam is interference-fitted.

[0021] In the above technical solution, the housing also includes a front shell and a middle frame, the light guide is a semi-transparent structure, the light guide and the front shell are a two-color injection molded structure, and the front shell and the middle frame are fixed by pins to form an assembly cavity.

[0022] In the above technical solution, there are two lenses, one is an IR camera and the other is an RGB camera, and they are symmetrically arranged with the central axis of the lens as the reference. There are also two round holes on the light-blocking foam and two lens transmission areas on the optical PC sheet.

[0023] In the above technical solution, multiple LED indicator lights are evenly arranged around the perimeter of the indicator light panel.

[0024] The beneficial effects of the present invention are as follows: the lens display area and indicator light of the face recognition device of the present invention are integrated into one, which can isolate interference light from entering the lens, and is more aesthetically pleasing to use, and the effect of the indicator light is also greatly enhanced. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an exploded view of the structure of the face recognition device shown in this invention;

[0027] Figure 2 This is an exploded view of the structure of the face recognition device shown in this invention;

[0028] Figure 3 This is a side cross-sectional view of the face recognition device shown in this invention;

[0029] Figure 4 This is a schematic diagram of the structure of the optical PC chip in the face recognition device of the present invention;

[0030] Figure 5 This is a schematic diagram of the assembly process of the face recognition device shown in this invention;

[0031] Figure 6 This is an exploded view of the structure of the face recognition device shown in this invention;

[0032] Figure 7 This is a schematic diagram of the assembled structure of the face recognition device shown in this invention;

[0033] The components include: 1. Optical PC sheet; 11. Triangular positioning area; 12. Lens transmission area; 13. Infrared lamp transmission area; 14. Opaque area; 2. Housing; 21. Light guide column; 211. PC sheet mounting part; 2111. Step; 22. Front shell; 23. Middle frame; 3. Indicator light panel; 31. LED indicator light; 32. Infrared supplementary light; 4. Bracket; 5. Light-blocking foam; 51. Round hole; 6. Lens plate; 61. Lens; 62. Power signal socket. Detailed Implementation

[0034] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0035] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0036] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0037] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this disclosure. The drawings only show the components related to this disclosure and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0038] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0039] like Figure 1-7 As shown, the present invention provides a screenless face recognition device with an integrated lens display area and indicator light, including an optical PC sheet 1, a housing 2, an indicator light board 3, a bracket 4, a light-blocking foam 5, and a lens board 6.

[0040] The housing 2 includes a front shell 22, a middle frame 23, and a light guide post 21. The front shell 22 is the front end face, and the light guide post 21 is provided on the front shell 22. The light guide post 21 is a semi-transparent circular structure that penetrates the front shell 22 and mainly serves to transmit light. The middle frame 23 is a structure formed by four sides. The light guide post 21 and the front shell 22 are two-color injection molded structures. The front shell 22 and the middle frame 23 are fixed by pins and form an assembly cavity. The optical PC sheet 1 is assembled on the light guide post 21, and the assembly joint is opaque.

[0041] In one embodiment, the inner circumference of the light guide post 21 is recessed to form a PC sheet mounting portion 211. The optical PC sheet 1 is mounted on the PC sheet mounting portion 211, and after mounting, the outer surface of the optical PC sheet 1 is flush with the front shell 22 of the housing 2. A triangular positioning area 11 is provided on the outer circumference of the optical PC sheet 1, and a step 2111 matching the shape of the triangular positioning area 11 is provided on the PC sheet mounting portion 211 of the light guide post 21. The special triangular positioning between the inner side of the optical PC sheet 1 and the light guide post 21 facilitates the assembly of the optical PC sheet 1 and the recessed part of the light guide post 21 without damaging the circular structure of the optical PC sheet 1.

[0042] The lens plate 6 is equipped with a lens 61 and a power signal socket 62. There are two power signal sockets 62, one located at the top and one at the bottom of the lens 61. The power signal sockets 62 are electrically connected to the LED indicator 31 and the infrared fill light 32 on the indicator panel 3.

[0043] Multiple LED indicator lights 31 are evenly arranged around the perimeter of the indicator light panel 3. The positions of the light guide pillars 21 on the housing 2 correspond to the positions of the LED indicator lights 31. After assembly, the light from the LED indicator lights 31 passes through the light guide pillars 21. An infrared auxiliary light 32 is provided in the center of the indicator light panel 3. One or more infrared auxiliary lights 32 can be arranged side by side.

[0044] The optical PC sheet 1 has a lens transmission area 12 and an infrared lamp transmission area 13. After assembly, the lens transmission area 12 corresponds to the position of the lens 61, and the infrared lamp transmission area 13 corresponds to the position of the infrared supplementary light 32. Except for the lens transmission area 12 and the infrared lamp transmission area 13, the remaining areas are opaque areas 14. The back of the opaque area 14 of the optical PC sheet 1 has silkscreen printing. The opaque area 14, the side circumference, and the triangular positioning area 11 are all painted, and the paint layer prevents light from passing through.

[0045] In one embodiment, the optical PC sheet 1 has a diameter of 37.6 mm and a thickness of 3 mm. The opaque area 14, the side circumference, and the triangular positioning area 11 are treated with black paint to prevent paint peeling and thus block light transmission. The lens transmission area 12 is circular, identical in shape to the lens 61, with a white light transmittance of over 92%. The infrared light transmission area 13 is crescent-shaped, with a transmittance corresponding to the wavelength of infrared light, allowing infrared light to pass through; for example, it can be coated with ink corresponding to 940 nm infrared light.

[0046] The indicator light plate 3 and the lens plate 6 are respectively fixed to both ends of the bracket 4. The bracket 4 is set inside the cavity of the housing 2, with the end where the indicator light plate 3 is installed close to the light guide post 21. Specifically: the front end of the bracket 4 has an indicator light plate mounting part, and the indicator light plate 3 is fixed to the indicator light plate mounting part by screws; the rear end of the bracket 4 has a lens plate mounting part, and the lens plate 6 is fixed to the lens plate mounting part by screws; the housing 2 has a bracket mounting part, and the bracket 4 is fixed to the bracket mounting part by screws.

[0047] The light-blocking foam 5 is semi-circular, with a notch providing mounting space for the infrared supplementary light 32, thus avoiding obstruction of its installation. The light-blocking foam 5 has a central circular hole 51 through which the lens 61 can pass. The light-blocking foam 5 has adhesive backing; the adhesive side adheres to the periphery of the lens 61, while the non-adhesive side contacts the optical PC sheet 1. The mounting gap between the optical PC sheet 1 and the lens 61 is less than the thickness of the light-blocking foam 5, allowing for an interference fit. For example, the interference fit of the light-blocking foam 5 is 0.2mm.

[0048] In one embodiment, the lens 61 has two lenses, one of which is an IR camera and the other is an RGB camera, and they are symmetrically arranged with the central axis of the lens 61 as a reference. The circular holes 51 on the light-blocking foam 5 and the lens transmission area 12 on the optical PC sheet 1 also have two holes.

[0049] Assembly sequence: The optical PC sheet 1 is fixed to the light guide post 21 of the housing 2 by tooling and adhesive. The indicator light plate 3 and the lens plate 6 are fixed to the bracket 4 by screws. The light-blocking foam 5 with the adhesive side is attached to the front of the lens. Finally, the bracket 4 is inserted into the cavity of the housing 2 and fixed by screws. After it is fixed in place, the light-blocking foam 5 is sandwiched between the optical PC sheet 1 and the lens with an interference fit of 0.2mm, which can further prevent stray light from entering the lens.

[0050] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A screenless face recognition device with an integrated lens display area and indicator light, characterized in that: It includes an optical PC sheet (1), a housing (2), an indicator light board (3), a bracket (4), a light-blocking foam (5), and a lens plate (6); The lens plate (6) is provided with a lens (61), and the indicator light plate (3) is provided with multiple LED indicator lights (31) around its perimeter, and an infrared fill light (32) is provided in the middle position. The optical PC sheet (1) is provided with a lens transmission area (12) corresponding to the position of the lens (61) and an infrared lamp transmission area (13) corresponding to the position of the infrared fill light (32), and the remaining area is an opaque area (14). The housing (2) is provided with a light guide post (21) corresponding to the position of the LED indicator (31), and the optical PC sheet (1) is mounted on the light guide post (21) and the mounting joint is opaque. The indicator light plate (3) and the lens plate (6) are respectively fixed to both ends of the bracket (4). The bracket (4) is set in the cavity of the housing (2). One end of the indicator light plate (3) is close to the light guide post (21). The inner circumference of the light guide post (21) is concave to form a PC sheet mounting part (211). The optical PC sheet (1) is mounted on the PC sheet mounting part (211). After the optical PC sheet (1) is mounted on the PC sheet mounting part (211), the outer surface of the optical PC sheet (1) is flush with the housing (2). The light-blocking foam (5) is semi-circular, with the notch serving as the assembly space for the infrared supplementary light (32). A circular hole (51) is provided in the middle, allowing the lens (61) to pass through. The light-blocking foam (5) is provided with adhesive backing, with the adhesive backing surface bonded to the periphery of the lens (61) and the non-adhesive backing surface in contact with the optical PC sheet (1). The assembly gap between the optical PC sheet (1) and the lens (61) is smaller than the thickness of the light-blocking foam (5), so that the light-blocking foam (5) is interference-fitted.

2. The screenless face recognition device according to claim 1, characterized in that: The back of the opaque area (14) of the optical PC sheet (1) is screen-printed and painted, and the sides of the optical PC sheet (1) are also painted. The paint layer prevents light from passing through.

3. The screenless face recognition device according to claim 1, characterized in that: The lens plate (6) is provided with a power signal socket (62), which is electrically connected to the indicator light plate (3).

4. The screenless face recognition device according to claim 3, characterized in that: The optical PC sheet (1) has a triangular positioning area (11) on its outer circumference, and the PC sheet mounting part (211) of the light guide post (21) has a step (2111) that matches the shape of the triangular positioning area (11).

5. The screenless face recognition device according to claim 4, characterized in that: The triangular positioning area (11) is spray-painted, and the paint layer prevents light from passing through.

6. The screenless face recognition device according to claim 1, characterized in that: The housing (2) also includes a front shell (22) and a middle frame (23). The light guide column (21) is a semi-transparent structure. The light guide column (21) and the front shell (22) are two-color injection molded structures. The front shell (22) and the middle frame (23) are fixed by pins to form an assembly cavity.

7. The screenless face recognition device according to claim 1, characterized in that: The lens (61) has two parts, one is an IR camera and the other is an RGB camera, and they are symmetrically arranged with the central axis of the lens (61) as the reference. The round hole (51) on the light-blocking foam (5) and the lens transmission area (12) on the optical PC sheet (1) also have two parts.

8. The screenless face recognition device according to claim 1, characterized in that: Multiple LED indicator lights (31) are evenly arranged around the perimeter of the indicator light panel (3).

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