Intelligent door lock face recognition lens

Abstract

The intelligent door lock face recognition lens comprises a supporting plate, a rotating seat, a lens assembly and a sliding plate, the rotating seat is rotatably installed on a supporting frame, the sliding plate is vertically connected with the supporting plate in a sliding mode, the lens assembly is installed on the rotating seat, and the lens assembly is connected with the sliding plate in a sliding mode. A first prism, a second prism and a third prism are fixedly installed on the supporting plate, light emitted by the lens assembly penetrates through the first prism and then is refracted upwards, the irradiation direction of the light emitted by the lens assembly penetrates through the second prism and then is kept unchanged, and the light emitted by the lens assembly penetrates through the third prism and then is refracted downwards. The intelligent door lock has the advantages that the first prism, the second prism and the third prism are switched to refract light by adjusting the pitching angles of the rotating base and the lens assembly on the supporting plate, images of the position height are collected on the fixed intelligent door lock, and the intelligent door lock can adapt to users of different heights.

Description

Technical Field

[0001] This utility model relates to the technical field of lenses, specifically to a smart door lock face recognition lens. Background Technology

[0002] Smart locks are improvements upon traditional mechanical locks, offering greater intelligence and convenience in terms of user security, identification, and management. As people's demands for smart locks continue to increase, they are integrating more and more functions. To further enhance convenience, facial recognition technology has emerged as a feature integrated into smart locks, enabling unlocking via facial recognition.

[0003] Chinese utility model patent CN218029528U discloses a modular smart lock with camera and fingerprint recognition, including a shell. A fixing component is provided on the right side wall of the shell, and a lock body and an inner shell are respectively mounted on the right side wall of the shell via the fixing component. Unlocking commands can be issued to the central control unit using either a password touchscreen or a fingerprint touchscreen. After receiving the unlocking command, the central control unit activates the camera and performs face matching using the face recognition module within the camera. If face matching fails, unlocking cannot proceed, thus preventing theft using stolen fingerprints. Furthermore, the central control unit connects to the internet via a Wi-Fi module, allowing it to send the image generated by the face recognition module to a mobile client. This enables the homeowner to view the person unlocking the door and promptly alert the authorities, enhancing the security of the smart lock.

[0004] In the use of smart locks, the lock is fixed to the door panel, and the height range that the camera can capture is also fixed. This inevitably causes inconvenience for users of different heights. Therefore, existing smart lock lenses have the problem of not being able to adapt to users of different heights. Utility Model Content

[0005] To address the aforementioned technical problems, the present invention aims to provide a smart door lock face recognition lens, comprising a support plate, a rotating base, a lens assembly, and a sliding plate. This smart door lock face recognition lens has the advantage of being adaptable to users of different heights.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0007] A smart door lock face recognition lens includes a support plate, a rotating base, a lens assembly, and a sliding plate. The rotating base is rotatably mounted on a support frame. The sliding plate is vertically slidably connected to the support plate. The lens assembly is mounted on the rotating base. The support plate is fixedly mounted with a first prism, a second prism, and a third prism, which are arranged vertically. The sliding plate has a photosensitive element receiving slot. The first prism, the second prism, and the third prism are located between the photosensitive element receiving slot and the lens assembly. Light emitted from the lens assembly is refracted upwards after passing through the first prism. Light emitted from the lens assembly maintains its illumination direction after passing through the second prism. Light emitted from the lens assembly is refracted downwards after passing through the third prism.

[0008] By adjusting the pitch angle of the rotating base and lens assembly on the support plate, the lens assembly can capture images at different heights. By switching between the first, second, and third prisms to refract light, the refracted light enters the photosensitive element's receiving slot in a horizontal direction. This achieves the ability to capture images at a fixed height on a smart lock, thus accommodating users of different heights.

[0009] Preferably, the rotating seat is fixedly connected to a sector gear, the support plate is provided with a sliding groove, the sliding groove is slidably connected to a rack, and the rack meshes with the sector gear.

[0010] This setup enables the rotating seat to rotate on the support plate.

[0011] Preferably, the rack is fixedly connected to the sliding plate.

[0012] This configuration allows for switching between the first, second, and third prisms while adjusting the angle of the lens assembly, making it convenient to use.

[0013] Preferably, the support plate is fixedly mounted with a driving component, and the output shaft of the driving component is fixedly mounted with a lead screw, the lead screw is vertically arranged, and the lead screw is threadedly connected to the sliding plate.

[0014] This setup enables the sliding plate to move on the support plate.

[0015] Preferably, the driving component is a motor.

[0016] This setup enables the drive component to rotate the lead screw.

[0017] Preferably, the support plate is fixedly connected to a protective cover, and the rotating seat, lens assembly and sliding plate are all located inside the protective cover, which has an opening at the lens assembly.

[0018] This setting helps to extend the lifespan of the lens.

[0019] Preferably, the rotating seat is fixedly connected to a light-shielding plate that blocks the opening, and the light-shielding plate is provided with a light-transmitting plate located at the lens assembly.

[0020] This setting helps prevent light leakage from the lens.

[0021] Preferably, the first prism, the second prism, and the third prism are evenly distributed in the vertical direction.

[0022] This setup facilitates switching between the first prism, the second prism, and the third prism.

[0023] Preferably, the first prism has a first vertical surface and a first inclined surface. The first vertical surface is located on the side of the first prism closer to the lens assembly, and the first inclined surface is located on the side of the first prism closer to the photosensitive element receiving groove. The upper end of the first inclined surface is inclined towards the lens assembly.

[0024] This setup enables the light to be refracted upwards through the first prism.

[0025] Preferably, the third prism has a third vertical surface and a third inclined surface. The third vertical surface is located on the side of the third prism closer to the lens assembly, and the third inclined surface is located on the side of the third prism closer to the photosensitive element receiving groove. The lower end of the third inclined surface is inclined towards the lens assembly.

[0026] This setup enables the function of refracting light downwards through a third prism.

[0027] Compared with the prior art, this utility model has achieved beneficial technical effects:

[0028] By adjusting the tilt angle of the rotating base and lens assembly on the support plate, the lens assembly can capture images at different heights. After adjusting the tilt angle, the light emitted from the lens assembly will also be deflected at a certain angle. At this time, by switching the first prism, the second prism, and the third prism, the light is refracted, so that the refracted light enters the photosensitive element receiving slot in a horizontal direction. This ensures that the photosensitive element can collect image signals even after the lens assembly is adjusted. This achieves the ability to capture images at a fixed height on a smart door lock, thus providing the advantage of adapting to users of different heights. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of a smart door lock face recognition lens in an embodiment of this utility model;

[0030] Figure 2This is a schematic diagram of the structure of the sector gear and rack in an embodiment of this utility model;

[0031] Figure 3 This is a schematic diagram of the optical path when the first prism is located at the position corresponding to the lens assembly in this embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the optical path when the third prism of this utility model is located at the position corresponding to the lens assembly.

[0033] The technical features referred to by the various reference numerals in the accompanying drawings are as follows:

[0034] 11. Support plate; 12. Photosensitive element receiving slot; 13. Slide groove; 14. Protective cover; 15. Opening; 21. Rotating seat; 22. Lens assembly; 23. Sector gear; 24. Light shield; 25. Light transmission plate; 31. Sliding plate; 32. Rack; 33. Driving component; 34. Lead screw; 41. First prism; 42. Second prism; 43. Third prism; 44. First vertical surface; 45. First inclined surface; 46. Third vertical surface; 47. Third inclined surface. Detailed Implementation

[0035] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments. However, the scope of protection of this utility model is not limited to the specific embodiments described below.

[0036] refer to Figure 1 A smart door lock face recognition lens includes a support plate 11, a rotating base 21, a lens assembly 22, and a sliding plate 31. The rotating base 21 is rotatably mounted on a support frame. The sliding plate 31 is vertically slidably connected to the support plate 11. The lens assembly 22 is mounted on the rotating base 21. The sliding plate 31 has a photosensitive element receiving groove 12. A first prism 41, a second prism 42, and a third prism 43 are located between the photosensitive element receiving groove 12 and the lens assembly 22. Light emitted from the lens assembly 22 is refracted upward after passing through the first prism 41. The light emitted from the lens assembly 22 maintains its illumination direction after passing through the second prism 42. The light emitted from the lens assembly 22 is refracted downward after passing through the third prism 43. A protective cover 14 is fixedly connected to the support plate 11. The rotating base 21, the lens assembly 22, and the sliding plate 31 are all located inside the protective cover 14. The protective cover 14 has an opening 15 located at the lens assembly 22. The rotating base 21 is fixedly connected to a light-shielding plate 24 that blocks the opening 15. The light-shielding plate 24 is provided with a light-transmitting plate 25 located at the lens assembly 22. Light can pass through the light-transmitting plate 25 and enter the lens assembly 22. The light-transmitting plate 25 is used to protect the lens assembly 22.

[0037] A support plate 11 is fixedly mounted with a first prism 41, a second prism 42, and a third prism 43. The first prism 41, second prism 42, and third prism 43 are arranged vertically and are evenly distributed in the vertical direction, facilitating the switching of the first prism 41, second prism 42, and third prism 43. The first prism 41 has a first vertical surface 44 and a first inclined surface 45. The first vertical surface 44 is located on the side of the first prism 41 closest to the lens assembly 22, and the first inclined surface 45 is located on the side of the first prism 41 closest to the photosensitive element receiving groove 12. The upper end of the first inclined surface 45 is inclined towards the lens assembly 22. This achieves the function of refracting light upwards through the first prism 41, correcting light rays entering the first prism 41 obliquely downwards to the horizontal direction. The second prism 42 has a second vertical surface and a second inclined surface. The second vertical surface is located on the side of the second prism 42 closer to the lens assembly 22, and the second inclined surface is located on the side of the second prism 42 closer to the photosensitive element receiving groove 12. The lower end of the second inclined surface is inclined towards the lens assembly 22. This enables the third prism 43 to refract light downwards, correcting light rays entering the third prism 43 obliquely upwards to a horizontal direction.

[0038] The photosensitive element receiving slot 12 is used to house the photosensitive element of the camera, and the photosensitive element is fixed in a fixed position on the door lock frame. After light shines on the photosensitive element, it can output an image signal for face recognition. The lens assembly 22 is equipped with a lens with negative optical power, which collects and corrects the light shining on the lens assembly 22 from all directions, so that the lens assembly 22 can emit a parallel beam of light towards the photosensitive element receiving slot 12, which facilitates the photosensitive element to collect image signals.

[0039] A sector gear 23 is fixedly connected to the rotating base 21. A slide groove 13 is provided on the support plate 11, and a rack 32 is slidably connected to the slide groove 13, meshing with the sector gear 23. The rack 32 is fixedly connected to the sliding plate 31. A driving component 33 is fixedly mounted on the support plate 11, and a lead screw 34 is fixedly mounted on the output shaft of the driving component 33. The lead screw 34 is vertically positioned and threadedly connected to the sliding plate 31. The driving component 33 is a motor, enabling it to drive the lead screw 34 to rotate.

[0040] Initially, the second prism 42 is positioned corresponding to the lens assembly 22, and the lens assembly 22 is at an angle perpendicular to the second prism 42. After passing through the lens assembly 22, the light rays are emitted horizontally, passing through the second prism 42 and illuminating the photosensitive element receiving slot 12. When a higher position needs to be captured, the drive rotating base 21 rotates on the support plate 11, causing the lens assembly 22 to rotate upwards and the sliding plate 31 to move downwards, positioning the first prism 41 corresponding to the lens assembly 22. After passing through the lens assembly 22, the light rays are emitted diagonally downwards, passing through the first prism 41. The first prism 41 refracts the light upwards and directs the light rays horizontally towards the photosensitive element receiving slot 12, facilitating the acquisition of image signals by the photosensitive element. When a lower position needs to be captured, the drive rotating seat 21 rotates on the support plate 11, causing the lens assembly 22 to rotate downwards and the sliding plate 31 to move upwards, so that the third prism 43 is positioned corresponding to the lens assembly 22. After the optical fiber passes through the lens assembly 22, the optical fiber is emitted obliquely upwards and passes through the third prism 43. The third prism 43 refracts the optical fiber downwards and directs the light in the horizontal direction towards the photosensitive element receiving slot 12, which facilitates the photosensitive element to collect image signals.

[0041] This embodiment has the following advantages:

[0042] By adjusting the pitch angle of the rotating base 21 and the lens assembly 22 on the support plate 11, the lens assembly 22 can capture images at different heights. After adjusting the pitch angle, the light emitted from the lens assembly 22 will also be deflected at a certain angle. At this time, by switching the first prism 41, the second prism 42, and the third prism 43, the light is refracted so that the refracted light enters the photosensitive element receiving slot 12 in a horizontal direction. This ensures that the photosensitive element can collect image signals even after the lens assembly 22 is adjusted. Thus, it is possible to collect images at a fixed height on a fixed smart door lock, achieving the advantage of adapting to users of different heights.

[0043] The drive rack 32 moves on the slide groove 13. During the movement, the rack 32 drives the sector gear 23 that meshes with it to rotate. The sector gear 23 drives the rotating seat 21 to rotate, thereby realizing the function of driving the rotating seat 21 to rotate on the support plate 11.

[0044] The sliding plate 31 is driven to slide on the support plate 11, which in turn drives the rack 32 to move, thereby realizing the linkage between the sliding plate 31 and the rotating seat 21. This allows the first prism 41, the second prism 42 and the third prism 43 to be switched while adjusting the angle of the lens assembly 22, which facilitates use.

[0045] The driving component 33 drives the lead screw 34 to rotate. During the rotation, the lead screw 34 drives the sliding plate 31, which is threadedly connected to it, to move, thereby realizing the function of driving the sliding plate 31 to move on the support plate 11.

[0046] The protective cover 14 protects the lens assembly 22, the first prism 41, the second prism 42, and the third prism 43, thereby improving the lens's lifespan.

[0047] By setting the light shield 24, external light is prevented from directly shining on the photosensitive element through the opening 15, thereby improving the clarity of the image signal output by the photosensitive element and achieving the effect of preventing light leakage from the lens.

[0048] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the utility model.

Claims

1. A smart door lock face recognition camera, characterized in that: The system includes a support plate (11), a rotating seat (21), a lens assembly (22), and a sliding plate (31). The rotating seat (21) is rotatably mounted on the support frame. The sliding plate (31) is vertically slidably connected to the support plate (11). The lens assembly (22) is mounted on the rotating seat (21). The support plate (11) is fixedly mounted with a first prism (41), a second prism (42), and a third prism (43). The first prism (41), the second prism (42), and the third prism (43) are aligned vertically. The sliding plate (31) is provided with a photosensitive element receiving groove (12). The first prism (41), the second prism (42) and the third prism (43) are located between the photosensitive element receiving groove (12) and the lens assembly (22). The light emitted from the lens assembly (22) is refracted upward after passing through the first prism (41). The light emitted from the lens assembly (22) remains unchanged after passing through the second prism (42). The light emitted from the lens assembly (22) is refracted downward after passing through the third prism (43). The rotating seat (21) is fixedly connected to a sector gear (23), the support plate (11) is provided with a sliding groove (13), the sliding groove (13) is slidably connected to a rack (32), the rack (32) meshes with the sector gear (23), and the rack (32) is fixedly connected to the sliding plate (31). The support plate (11) is fixedly mounted with a driving component (33), and the output shaft of the driving component (33) is fixedly mounted with a lead screw (34). The lead screw (34) is vertically arranged and threadedly connected to the sliding plate (31).

2. The smart door lock face recognition lens according to claim 1, characterized in that: The driving component (33) is a motor.

3. The smart door lock face recognition lens according to claim 1, characterized in that: The support plate (11) is fixedly connected to a protective cover (14). The rotating seat (21), lens assembly (22) and sliding plate (31) are all located inside the protective cover (14). The protective cover (14) has an opening (15) located at the lens assembly (22).

4. The smart door lock face recognition lens according to claim 3, characterized in that: The rotating seat (21) is fixedly connected to a light-shielding plate (24) that blocks the opening (15), and the light-shielding plate (24) is provided with a light-transmitting plate (25) located at the lens assembly (22).

5. The smart door lock face recognition lens according to claim 1, characterized in that: The first prism (41), the second prism (42), and the third prism (43) are evenly distributed in the vertical direction.

6. The smart door lock face recognition lens according to claim 1, characterized in that: The first prism (41) has a first vertical surface (44) and a first inclined surface (45). The first vertical surface (44) is located on the side of the first prism (41) close to the lens assembly (22), and the first inclined surface (45) is located on the side of the first prism (41) close to the photosensitive element receiving groove (12). The upper end of the first inclined surface (45) is inclined towards the lens assembly (22).

7. The smart door lock face recognition lens according to claim 1, characterized in that: The third prism (43) has a third vertical surface (46) and a third inclined surface (47). The third vertical surface (46) is located on the side of the third prism (43) close to the lens assembly (22), and the third inclined surface (47) is located on the side of the third prism (43) close to the photosensitive element receiving groove (12). The lower end of the third inclined surface (47) is inclined towards the lens assembly (22).

Images