A door and its finger vein intelligent lock

Abstract

The utility model discloses a door and its finger vein intelligence lock, and the finger vein intelligence lock includes: handle subassembly, light emitting component and multi-finger vein collection module, handle subassembly has the finger containing area, light emitting component and multi-finger vein collection module are opposite to set up in handle subassembly's finger containing area, wherein, light emitting component includes: infrared light source and infrared light intervention component, infrared light intervention component is used for blocking infrared light between the finger joint and entering multi-finger vein collection module, thereby can help to solve the problem that the strong glare between the finger joint appears and influences multi-finger vein collection module to multi-finger vein identification.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, and in particular to a door and its finger vein smart lock. Background Technology

[0002] Finger vein smart locks are intelligent door locks that utilize biometric technology. They authenticate the user by scanning the distribution of veins under the skin of multiple fingers with infrared light, thereby unlocking the door. This method offers improved security, convenience, and user experience. Specifically, the infrared light emitted by the finger vein smart lock's infrared light source is projected onto the finger and the spaces between the fingers, and the multi-finger vein acquisition module then identifies the veins. However, in this method, strong glare can occur between the fingers, affecting the multi-finger vein acquisition module's ability to recognize the veins. Utility Model Content

[0003] In view of this, the present invention provides a finger vein smart lock, which can help solve the problem that strong glare between the fingers affects the recognition of multiple finger veins by the multi-finger vein acquisition module.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A finger vein smart lock includes: a handle assembly, a light-emitting assembly, and a multi-finger vein acquisition module;

[0006] The handle assembly has a finger receiving area;

[0007] The light-emitting component and the multi-finger vein acquisition module are disposed opposite to each other in the finger receiving area of ​​the handle component; wherein, the light-emitting component includes: an infrared light source and an infrared light intervention component;

[0008] The infrared light intervention component is used to block infrared light between the fingers from entering the multi-finger vein acquisition module.

[0009] Preferably, the infrared light intervention component includes a first polarizer and a second polarizer. The first polarizer is located on one side of the infrared light source, and the second polarizer is located on one side of the multi-finger vein acquisition module. The first polarizer is used for the infrared light beam to pass through in a first direction, and the second polarizer is used for the infrared light beam to pass through in a second direction. The first direction and the second direction are perpendicular to each other.

[0010] Preferably, the handle assembly includes a grip portion, the infrared light source is disposed on the grip portion, the first polarizer is disposed on the light-emitting side of the infrared light source, and when the finger grips the grip portion, the first polarizer is located between the infrared light source and the finger.

[0011] Preferably, the infrared light source includes an infrared lamp board, the infrared lamp board is provided with a plurality of mounting grooves, each mounting groove is provided with an infrared lamp bead, and the first polarizing element includes a plurality of first polarizers, each mounting groove opening is provided with a first polarizer.

[0012] Preferably, the infrared light intervention component includes a sensing component, which is electrically connected to the infrared light source. The sensing component includes multiple sensing areas, and the infrared light source includes multiple LEDs. Each sensing area corresponds to each LED.

[0013] Preferably, the sensing component includes a sensing plate, and a plurality of sensing areas are disposed on the sensing plate.

[0014] Preferably, the plurality of LED beads are arranged in an array.

[0015] Preferably, the infrared light intervention component includes a total reflector having a first surface facing the multi-finger vein acquisition module, and the total reflector also having a second surface located on one side of the first surface, with the infrared light source disposed on the second surface.

[0016] Preferably, the infrared light source includes a first light source and a second light source, and the total reflector further has a third surface disposed opposite to the second surface, wherein the first light source is disposed on the second surface and the second light source is disposed on the third surface.

[0017] A door includes a finger vein smart lock, wherein the finger vein smart lock is as described above.

[0018] As can be seen from the above technical solution, the finger vein smart lock provided by this utility model, by adding an infrared light intervention component to the light-emitting component, can block the infrared light between the fingers from entering the multi-finger vein acquisition module, thereby helping to solve the problem that strong glare between the fingers affects the multi-finger vein acquisition module's recognition of multi-finger veins. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A side view of the structure of a door with a finger vein smart lock provided in an embodiment of this utility model;

[0021] Figure 2 A schematic diagram of the arrangement of the light-emitting component in the grip portion according to an embodiment of this utility model;

[0022] Figure 3 A schematic diagram of an infrared light source for placing fingers on the grip portion, provided in an embodiment of this utility model;

[0023] Figure 4 This is a front view of the structure of the multi-finger vein acquisition module provided in an embodiment of the present utility model;

[0024] Figure 5 A schematic diagram showing the arrangement of the first and second polarizers between the infrared light source and the multi-finger vein acquisition module, as provided in this embodiment of the utility model.

[0025] Figure 6 A schematic diagram of the infrared light from the infrared light source provided in this embodiment of the utility model under polarization.

[0026] Figure 7 A schematic diagram of the infrared light beam from the infrared light source with a waveplate provided in an embodiment of this utility model;

[0027] Figure 8 A schematic diagram showing the sensing component provided in an embodiment of this utility model disposed on an infrared light source;

[0028] Figure 9 A schematic diagram of the sensing area of ​​the finger touch sensing component provided in an embodiment of this utility model;

[0029] Figure 10 A schematic diagram showing the first and second light sources disposed on both sides of the total reflection element, according to an embodiment of the present utility model;

[0030] Figure 11 This is a schematic diagram showing the total internal reflection of infrared light from an infrared light source provided in an embodiment of the present invention within a total internal reflection element.

[0031] Among them, 1 is the door body, 2 is the lock body, 3 is the handle, 4 is the light-emitting component, 5 is the main control board of the door lock, 6 is the front panel of the door lock, 7 is the rear panel of the door lock, 8 is the multi-finger vein acquisition module, 8.1 is the camera, 9 is the finger, 10 is the first infrared lamp, 11 is the total reflection glass, 12 is the first infrared lamp board, 13 is the first polarizer, 14 is the waveplate, 15 is the second polarizer, 16 is the second infrared lamp board, 16.1 is the second lamp bead, 17 is the sensing board, and 18 is the second infrared lamp. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] The finger vein smart lock provided in this embodiment of the utility model, such as Figure 1 As shown, it includes: a handle assembly, a light-emitting component 4, and a multi-finger vein acquisition module 8;

[0034] The handle assembly has a finger receiving area;

[0035] The light-emitting component 4 and the multi-finger vein acquisition module 8 are disposed opposite to each other in the finger receiving area of ​​the handle assembly; wherein, the light-emitting component 4 includes: an infrared light source and an infrared light intervention component;

[0036] The infrared light intervention component is used to block infrared light between the fingers from entering the multi-finger vein acquisition module 8.

[0037] It should be noted that finger vein smart locks can be applied to smart doors, such as... Figure 1 As shown, the handle assembly can be disposed on the front side of the door lock front panel 6 of the door body 1, and a finger receiving area can be formed between it and the door lock front panel 6; wherein, the handle assembly may include a handle 3; in addition, in the light-emitting component 4 (infrared light-emitting component) and the multi-finger vein acquisition module 8, the multi-finger vein acquisition module 8 can be disposed on the side where the door lock front panel 6 is located, and the light-emitting component 4 can be disposed on the side where the handle assembly is located, and the two are distributed opposite to each other; wherein, as Figure 4As shown, the multi-finger vein acquisition module 8 may include a camera 8.1; in addition, the infrared light intervention component can intervene in the infrared light of the infrared light source through polarization, so that when the user's finger 9 is placed in the finger receiving area, it can block the infrared light between the fingers 9 from entering the multi-finger vein acquisition module 8; or, the infrared light intervention component can intervene in the infrared light of the infrared light source through touch sensing, so that only the part of the infrared light source touched by the user's finger 9 when it is placed in the finger receiving area will be triggered to light up, while the part that is not in contact (such as the part corresponding to the finger gap) will not be triggered to light up. This can be used to block (avoid) the infrared light between the fingers from entering the multi-finger vein. Acquisition module 8; Alternatively, the infrared light intervention component can interfere with the infrared light of the infrared light source through total internal reflection, so that when the user's finger 9 is placed in the finger receiving area and comes into contact with the part of the total internal reflection component, the infrared light will be transmitted from the finger, while the other part that does not come into contact with the total internal reflection component will still not emit infrared light. This can be used to block (avoid) the infrared light between the fingers from entering the multi-finger vein acquisition module 8; In this way, it can help solve the problem of strong glare between the fingers 9 affecting the multi-finger vein acquisition module's recognition of multi-finger veins, that is, solve the problem of strong glare between the fingers affecting the vein image during multi-finger vein recognition.

[0038] In other words, the finger vein smart lock provided by this solution adds an infrared light intervention component to the light-emitting component to block infrared light between the fingers from entering the multi-finger vein acquisition module, thereby helping to solve the problem of strong glare between the fingers affecting the multi-finger vein acquisition module's recognition of multi-finger veins.

[0039] In one embodiment of this solution, the infrared light intervention component includes a first polarizer and a second polarizer. The first polarizer is located on one side of the infrared light source, and the second polarizer is located on one side of the multi-finger vein acquisition module 8. The first polarizer is used for the infrared light beam to pass through in a first direction, and the second polarizer is used for the infrared light beam to pass through in a second direction. The first direction and the second direction are perpendicular to each other.

[0040] It should be noted that the infrared light source can be located inside the handle 3, the multi-finger vein acquisition module 8 can be located on the front side of the door lock front panel 6, the first polarizer can be located on one side of the infrared light source, and the second polarizer can be located on one side of the multi-finger vein acquisition module 8, with the two facing each other and located between the infrared light source and the multi-finger vein acquisition module 8; wherein, the first polarizer is used to allow only the infrared beam in the first direction (such as S-beam) of the infrared light from the infrared light source to be emitted, while the infrared beams in other directions are blocked. In this way, when the finger 9 touches the first polarizer, only the infrared beam in the first direction of the infrared light from the infrared light source is emitted and passes through the finger 9 and the gap between the fingers, and because the hand Due to the different media within finger 9, the infrared beam in the first direction can form a second direction infrared beam (such as P1 light) after entering finger 9; in addition, the second polarizer is used to allow only the second direction infrared beam in the infrared light of the infrared source to pass through, while infrared beams in other directions are blocked. In this way, the first direction infrared beam passing through the gaps between fingers 9 is blocked by the second polarizer, that is, the infrared light passing through the gaps between fingers 9 is blocked from entering the multi-finger vein acquisition module 8, while the second direction infrared beam formed after penetrating finger 9 can pass through the second polarizer and enter the multi-finger vein acquisition module 8, that is, the infrared light penetrating finger 3 can enter the multi-finger vein acquisition module 8.

[0041] In other words, the infrared light intervention component intervenes in the retention or rejection of infrared beams in a specific direction by means of polarization, so that when the user's finger 9 is placed in the finger receiving area, the infrared beam in a specific direction that penetrates the finger 9 is allowed to enter the multi-finger vein acquisition module 8, while the infrared beam in another specific direction that passes through the gaps between the fingers 9 is blocked, thereby preventing the infrared light between the fingers 9 from entering the multi-finger vein acquisition module 8, so that the multi-finger vein acquisition module 8 is not affected by the glare between the fingers.

[0042] Specifically, such as Figure 1 As shown, the handle assembly includes a grip portion, an infrared light source disposed on the grip portion, and a first polarizing element disposed on the light-emitting side of the infrared light source, as... Figure 5 As shown, when finger 9 is held in the gripping part, the first polarizing element is located between the infrared light source and finger 9.

[0043] It should be noted that, as Figure 1 As shown, the handle 3 has a gripping portion (bent portion), and a finger-accommodating area can be formed between the gripping portion of the handle 3 and the front panel 6 of the door lock; an infrared light source can be disposed on the inner side wall of the gripping portion (the side wall facing the front panel 6 of the door lock), such as Figure 5As shown, the first polarizer can be disposed on the light-emitting side of the infrared light source. When the finger 9 is held in the gripping part, the first polarizer is located between the infrared light source and the finger 9, and the finger 9 can contact the first polarizer. In this way, under the action of the first polarizer, only the first direction infrared beam (such as S-light) of the infrared light from the infrared light source is emitted and passes through the finger 9 and the gap between the fingers. Moreover, after the first direction infrared beam is transmitted through the finger 9, it also forms a second direction infrared beam (such as P1 light). Of course, this design not only makes it easy for the finger 9 to contact the first polarizer when it is held in the gripping part, but also ensures that the first direction infrared beam that passes through the finger 9 and the gap between the fingers is the first direction infrared beam after being acted upon by the first polarizer.

[0044] Specifically, such as Figure 5 As shown, the first polarizing element may include a first polarizer 13, the second polarizing element includes a second polarizer 15, and the infrared light source may be a first infrared lamp plate 12; wherein, the first infrared lamp plate 12 may be disposed on the inner side wall of the grip portion of the handle 3, the first polarizer 13 may be disposed on the front side of the first infrared lamp plate 12, and only allows infrared beams in the S direction to pass through; the second polarizer 15 may be disposed on the front side of the multi-finger vein acquisition module 8, and only allows infrared beams in the P1 direction to pass through; thus, as Figure 6 As shown, when finger 9 is placed in the finger receiving area and placed on the first polarizer 13, only the infrared beam in the S direction (S light) of the infrared light from the first infrared lamp plate 12 is emitted after passing through the first polarizer 13, while the infrared beams in other directions are blocked. Consequently, the infrared beam in the S direction will pass through finger 9 (multiple fingers) and the gaps between fingers. The portion of the infrared beam in the S direction that passes through the gaps between fingers will be blocked after illuminating the second polarizer 15 in front of the multi-finger vein acquisition module 8, thus preventing the multi-finger vein acquisition module 8 from being affected by glare from the gaps between fingers. The remaining infrared beam in the S direction will generate an infrared beam in the P1 direction (P1 light) and an infrared beam in the S1 direction (S1 light) after entering finger 9. The infrared beam in the P1 direction will then pass through the second polarizer 15 and enter the multi-finger vein acquisition module 8, while the infrared beam in the S1 direction will be blocked by the second polarizer 15.

[0045] Furthermore, the infrared light source includes an infrared lamp board with multiple mounting grooves, each mounting groove containing an infrared lamp bead. The first polarizing element includes multiple first polarizers, each mounting groove having a corresponding first polarizer at its opening.

[0046] Among them, such as Figure 5As shown, the aforementioned infrared lamp board can be the first infrared lamp board 12 described above; wherein, the first surface of the first infrared lamp board 12 facing the multi-finger vein acquisition module 8 can be provided with multiple mounting grooves, and each mounting groove is provided with an infrared lamp bead, that is, the multiple infrared lamp beads of the first infrared lamp board 12 are arranged one by one in the multiple mounting grooves; in addition, the first polarizing element can include multiple first polarizers, and the multiple first polarizers are arranged one by one in the slots of the multiple mounting grooves; wherein, the multiple first polarizers can be countersunk one by one in the slots of the multiple mounting grooves; of course, this solution is designed in this way to avoid using a large-sized first polarizing element to cover and set on the light-emitting side of the infrared light source.

[0047] In addition, such as Figure 5 and Figure 7 As shown, S-light is reflected on the side of finger 9 to form S2 light and P2 light. S2 light is blocked by the second polarizer 15, while P2 light passes through the second polarizer 15. Since P2 light is reflected from the side of finger 9, it will form a bright spot in the image and affect the imaging, so it also needs to be eliminated. In order to eliminate P2 light, an 850nm 1 / 4 wave plate is needed to convert it to other polarization directions. For this purpose, the aforementioned wave plate 14 can be set on the front side of the first polarizer 13 and the rear side of the second polarizer 15 respectively.

[0048] In another embodiment of this solution, the infrared light intervention component includes a sensing component, which is electrically connected to the infrared light source. The sensing component includes multiple sensing areas, and the infrared light source includes multiple LEDs. Each sensing area corresponds to each LED.

[0049] It should be noted that the infrared light source can be set on the inner wall of the grip part of the handle 3, and the sensing component can be a touch sensing component, which can be set on the light-emitting side of the infrared light source and electrically connected to the infrared light source. Among them, multiple sensing areas of the sensing component are set one-to-one with multiple LEDs of the infrared light source and electrically connected to each other. Of course, the multiple LEDs of the infrared light source can serve as a multi-point infrared light source. In this way, when the finger 9 is placed in the finger receiving area and touches the sensing area of ​​the sensing component, the LED corresponding to the sensing area touched by the finger 9 will be triggered and lit, while the LED corresponding to the sensing area not touched by the finger 9 will not be triggered and lit. Thus, the LED corresponding to the sensing area between the fingers will not be triggered and lit, so that the infrared light of the infrared light source will not be emitted from between the fingers. That is, the corresponding LED will only be triggered and lit when the sensing area of ​​the touch sensing component senses that the finger 9 has touched it. Thus, the LED corresponding to the sensing area between the fingers will not be lit.

[0050] In other words, the infrared light intervention component intervenes in the lighting of multiple LEDs of the infrared light source through touch sensing, so that when the user's finger 9 is placed in the finger receiving area and touches the sensing area of ​​the touch sensing component, the corresponding LED will be triggered to light up. The LEDs corresponding to the sensing areas that are not touched (such as the sensing areas between the fingers) will not light up, thereby preventing infrared light from being emitted from between the fingers. This can be used to prevent infrared light between the fingers 9 from entering the multi-finger vein acquisition module 8. Of course, this also makes the light-emitting component a touch-sensing infrared light component.

[0051] Specifically, such as Figure 8 As shown, the sensing component includes a sensing plate 17, and multiple sensing areas are disposed on the sensing plate 17. Among them, as... Figure 8 As shown, the infrared light source can be a second infrared lamp board 16, and multiple second lamp beads 16.1 can be evenly distributed; the sensing board 17 can be a touch sensing board, and can be set on the front side of the second infrared lamp board 16. Multiple sensing areas can all be touch sensing areas, and can be evenly arranged on the side of the touch sensing board facing away from the second infrared lamp board 16, and can correspond one-to-one with the multiple lamp beads of the second infrared lamp board 16 and be electrically connected; when the finger 9 touches the touch sensing area of ​​the touch sensing board, the corresponding lamp bead will be triggered to light up, so that only the area touched by the finger 9 of the touch sensing infrared light component is lit up, while the area corresponding to the finger gap will not be lit up. This can prevent infrared light from being emitted from between the fingers, and reduce or avoid the influence of glare between the fingers on the multi-finger vein acquisition module 8.

[0052] Furthermore, such as Figure 9 As shown, multiple LED beads are arranged in an array. Among them, multiple second LED beads 16.1 are arranged in an array on the second infrared lamp panel 16 so that the multiple second LED beads 16.1 are evenly distributed on the second infrared lamp panel 16, thereby making it easier to be touched by a finger and trigger the corresponding second LED bead 16.1 to light up, that is, to light up the touch sensing part of the touch sensing infrared light component.

[0053] In yet another embodiment of this solution, such as Figure 10 and Figure 11 As shown, the infrared light intervention component includes a total reflector with a first surface facing the multi-finger vein acquisition module 8. The total reflector also has a second surface located on one side of the first surface, and the infrared light source is disposed on the second surface.

[0054] It should be noted that, as Figure 10 As shown, the total reflective element can be a total reflective glass 11, and can be disposed on the inner sidewall of the grip portion of the handle 3. The first surface of the total reflective glass 11 can be distributed opposite to the multi-finger vein acquisition module 8, and when the finger 9 is placed in the finger receiving area, it can be placed on the first surface of the total reflective glass 11. The second surface of the total reflective glass 11 is adjacent to the first surface and located on one side of the first surface; as shown Figure 11 As shown, the infrared light source can be disposed on the second surface of the total reflection glass 11 and is used to inject infrared light into the total reflection glass 11 at a preset angle, so that the infrared light undergoes total internal reflection within the total reflection glass 11 and does not exit the total reflection glass 11. At this time, the infrared light from the infrared light source cannot enter the multi-finger vein acquisition module 8; wherein, as Figure 11 As shown, the infrared light from the infrared light source undergoes total internal reflection within the first surface of the total internal reflection glass 11. When a finger touches the first surface of the total internal reflection glass 11, due to the different medium within the finger 9, the infrared light that undergoes total internal reflection within the total internal reflection glass 11 is refracted out from the finger 9. That is, the infrared light exits the total internal reflection glass 11 and enters the finger 9, while the area of ​​the first surface of the total internal reflection glass 11 that is not in contact with the finger still does not emit infrared light. This can prevent infrared light from escaping between the fingers and solve the problem of glare between the fingers.

[0055] In other words, the infrared light interference component interferes with the emission of infrared light from the infrared light source through total internal reflection, so that infrared light will only be emitted from the finger when the user's finger 9 is placed in the finger receiving area and touches the first surface of the total internal reflection component. The area where the first surface of the total internal reflection component is not in contact with the finger will still not emit infrared light, thereby preventing the infrared light from the infrared light source from escaping between the fingers.

[0056] Specifically, the infrared light source includes a first light source and a second light source, and the total reflector also has a third surface disposed opposite to the second surface. The first light source is disposed on the second surface, and the second light source is disposed on the third surface. For example, Figure 10 As shown, the total reflection glass 11 can be a long strip structure, and in the total reflection glass 11, the second surface and the third surface are distributed opposite to each other and are located on both sides of the first surface; in addition, as Figure 11 As shown, the first light source can be a first infrared lamp 10, which can be disposed on the second surface of the total reflection glass 11, and shines first infrared light into the total reflection glass 11 at a preset angle, so that the first infrared light of the first infrared lamp 10 undergoes total internal reflection within the total reflection glass 11; the second light source can be a second infrared lamp 18, which can be disposed on the third surface of the total reflection glass 11, and shines second infrared light into the total reflection glass 11 at a preset angle, so that the second infrared light of the second infrared lamp 18 undergoes total internal reflection within the total reflection glass 11; that is, as Figure 11 As shown, the infrared light from the first infrared lamp 10 and the second infrared lamp 18 enters from both sides of the total reflection glass 11 and undergoes total reflection in the total reflection glass 11. The first surface of the total reflection glass 11 serves as one of the total reflection end faces. Of course, this design facilitates more infrared light to undergo total reflection in the total reflection glass 11. When a finger touches the first surface of the total reflection glass 11, sufficient infrared light can enter the finger to ensure that the finger veins are sufficiently transparent.

[0057] This utility model embodiment also provides a door, including a finger vein smart lock, which is the finger vein smart lock as described above; since this solution uses the above-mentioned finger vein smart lock, it has corresponding beneficial effects, which can be referred to the previous description and will not be repeated here; wherein, the above-mentioned door can be a smart door.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A finger vein smart lock, characterized in that, include: Handle assembly, light-emitting component, and multi-finger vein acquisition module; The handle assembly has a finger receiving area; The light-emitting component and the multi-finger vein acquisition module are disposed opposite to each other in the finger receiving area of ​​the handle component; wherein, the light-emitting component includes: an infrared light source and an infrared light intervention component; The infrared light intervention component is used to block infrared light between the fingers from entering the multi-finger vein acquisition module.

2. The finger vein smart lock according to claim 1, characterized in that, The infrared light intervention component includes a first polarizer and a second polarizer. The first polarizer is located on one side of the infrared light source, and the second polarizer is located on one side of the multi-finger vein acquisition module. The first polarizer is used for the infrared light beam to pass through in a first direction, and the second polarizer is used for the infrared light beam to pass through in a second direction. The first direction and the second direction are perpendicular to each other.

3. The finger vein smart lock according to claim 2, characterized in that, The handle assembly includes a grip portion, the infrared light source is disposed on the grip portion, and the first polarizing element is disposed on the light-emitting side of the infrared light source.

4. The finger vein smart lock according to claim 2, characterized in that, The infrared light source includes an infrared lamp board with multiple mounting grooves, each mounting groove containing an infrared lamp bead. The first polarizing element includes multiple first polarizers, each mounting groove having a corresponding first polarizer.

5. The finger vein smart lock according to claim 1, characterized in that, The infrared light intervention component includes a sensing component, which is electrically connected to the infrared light source. The sensing component includes multiple sensing areas, and the infrared light source includes multiple LEDs. Each sensing area corresponds to each LED.

6. The finger vein smart lock according to claim 5, characterized in that, The sensing component includes a sensing plate, and a plurality of sensing areas are disposed on the sensing plate.

7. The finger vein smart lock according to claim 5, characterized in that, The multiple LED beads are arranged in an array.

8. The finger vein smart lock according to claim 1, characterized in that, The infrared light intervention component includes a total reflector, which has a first surface facing the multi-finger vein acquisition module. The total reflector also has a second surface located on one side of the first surface, and the infrared light source is disposed on the second surface.

9. The finger vein smart lock according to claim 8, characterized in that, The infrared light source includes a first light source and a second light source. The total reflector also has a third surface disposed opposite to the second surface. The first light source is disposed on the second surface, and the second light source is disposed on the third surface.

10. A door, comprising a finger vein smart lock, characterized in that, The finger vein smart lock is the finger vein smart lock as described in any one of claims 1-9.

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