Brush palm device

Abstract

The utility model provides a brush palm device, and belongs to the technical field of biological recognition. The brush palm device comprises a shell assembly, a transparent cover plate, a light guide plate and an optical module. The transparent cover plate, the light guide plate and the optical module are sequentially arranged in the shell assembly in a stacked mode. The light guide plate comprises a first incident plane, a first reflecting plane and a first emergent plane, the first reflecting plane is located on the surface, facing the optical module, of the light guide plate, the first emergent plane is located on the surface, facing the transparent cover plate, of the light guide plate, and the first incident plane is located on the side face, perpendicular to the stacking direction, of the light guide plate; the optical module comprises a first light-emitting assembly, and the first light-emitting assembly is located on the side face of the light guide plate and can emit light towards the first incident face. According to the brush palm device, a large-area illumination range can be achieved, and good illumination brightness uniformity can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biometric identification, and particularly relates to a palm swiping device. BACKGROUND

[0002] With the popularization and application of convenient payment, there are more and more scenarios in daily life that need to rely on biometric identification to realize user identity recognition. Among them, palm swiping identification has the characteristics of portability and non-contact, thus bringing a good identity recognition experience.

[0003] In the related art, a lamp ring lighting mode is usually adopted. However, the lamp ring lighting scheme has the problem of insufficient edge brightness in a small-size product scenario, and has the problem of insufficient middle brightness in a large-size product scenario, and cannot realize compatibility of different size product scenarios. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a palm swiping device, which can solve the problem that the lighting scheme cannot realize compatibility of different size product scenarios.

[0005] The technical scheme is as follows:

[0006] In one aspect, a palm swiping device is provided, and the palm swiping device comprises a shell assembly, a transparent cover plate, a light guide plate and an optical module;

[0007] The transparent cover plate, the light guide plate and the optical module are sequentially and laminatedly arranged in the shell assembly;

[0008] The light guide plate comprises a first incident surface, a first reflection surface and a first exit surface, the first reflection surface is located on a surface of the light guide plate facing the optical module, the first exit surface is located on a surface of the light guide plate facing the transparent cover plate, and the first incident surface is located on a side surface of the light guide plate perpendicular to the lamination direction;

[0009] The optical module comprises a first light emitting assembly, and the first light emitting assembly is located on the side surface of the light guide plate and can emit light towards the first incident surface.

[0010] The technical scheme provided by the present application has at least the following beneficial effects:

[0011] The brush palm device provided in the application is provided with a light guide plate arranged below the transparent cover plate, the surface of the light guide plate facing the transparent cover plate is a first exit surface, the side surface of the light guide plate perpendicular to the stacking direction is a first incident surface, the light guide plate can turn the incident light from the first incident surface to the first exit surface, the first exit surface is used to provide illumination outward, the area of the light guide plate is large, a surface light source structure can be formed, a large illumination range can be realized, and good illumination brightness uniformity can be realized; in addition, the area of the light guide plate can change with the product size of the brush palm device, and the brush palm device of different sizes can be compatible. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0013] Figure 1 is a structural schematic diagram of the brush palm device provided in the embodiment of the application;

[0014] Figure 2 is a light emitting schematic diagram of the brush palm device provided in the embodiment of the application;

[0015] Figure 3 is a structural schematic diagram of the first light emitting assembly and the light guide plate provided in the embodiment of the application;

[0016] Figure 4 is a structural schematic diagram of the first light emitting assembly provided in the embodiment of the application;

[0017] Figure 5 is a structural sectional view of the brush palm device provided in the embodiment of the application.

[0018] The reference signs in the drawings represent respectively:

[0019] 1, housing assembly;

[0020] 101, accommodating cavity;

[0021] 2, transparent cover plate;

[0022] 3, light guide plate;

[0023] 30a, first incident surface; 30b, first reflection surface; 30c, first exit surface;

[0024] 31, diffuse reflection structure; 32, reflection film; 33, avoiding hole;

[0025] 4, optical module;

[0026] 41. First light-emitting component; 411. Light-emitting unit; 42. Circuit board; 43. Camera assembly;

[0027] 5. Support plate;

[0028] 50a, Second incident surface; 50b, Second exit surface; 50c, Second reflecting surface;

[0029] 6. Interactive aperture;

[0030] 61. Third incident surface;

[0031] 7. Second light-emitting component;

[0032] 8. Fixture. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] In the description of this application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] It should be understood that in this application, "electrical connection" can be understood as physical contact and electrical conduction between components; it can also be understood as the form in which different components in a circuit structure are connected through physical lines that can transmit electrical signals, such as copper foil or wires on a printed circuit board (PCB). "Communication connection" can refer to the transmission of electrical signals, including wireless communication connections and wired communication connections. "Connection" and "connected" can both refer to a mechanical or physical connection relationship, that is, A and B being connected or connected can mean that there are fastening components (such as screws, bolts, rivets, etc.) between A and B, or that A and B are in contact with each other and are difficult to separate.

[0036] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as those generally understood by one of ordinary skill in the art.

[0037] Among the convenient contactless biometric technologies provided by the related art, palm swiping recognition is a type of technology that can bring good identity recognition experience to users.

[0038] In the process of implementing palm print collection, it is necessary to ensure that the light of the light filling illumination is uniform and sufficient in brightness within the entire working range of the palm print collection device, and therefore the illumination system needs good light distribution capability to well ensure the image imaging quality of the palm.

[0039] In the palm swiping device in the related art, in order to collect good recognition pictures, a lamp ring structure surrounding the front of the shell is used for illumination. With the popularization of the palm swiping device, the palm swiping device is applied to many different scenes, and the product appearance requirements of the palm swiping device tend to be diversified, and various product appearances of different sizes appear.

[0040] However, this lamp ring structure needs to be adapted to different sizes of product appearances. When the size of the palm swiping device is large, the corresponding lamp ring structure is also large, the edge area of the recognized palm is aligned with the lamp ring structure, and the brightness is large, but the center area of the recognized palm is far away from the lamp ring structure, and the brightness is insufficient. The brightness difference between the edge area and the center area of the recognized palm is large, which will affect the recognition accuracy of the palm swiping device. Conversely, when the size of the palm swiping device is small, the corresponding lamp ring structure is also small, the center area of the recognized palm is aligned with the lamp ring structure, and the brightness is large, but the edge area of the recognized palm is far away from the lamp ring structure, and the brightness is insufficient. The brightness difference between the edge area and the center area of the recognized palm is large, which will affect the recognition accuracy of the palm swiping device.

[0041] Therefore, the present application provides a palm swiping device, a surface light source structure can be formed below the transparent cover plate, realizing a large area of illumination range and good illumination brightness uniformity. In addition, the area of the light guide plate can change with the product size of the palm swiping device, and different sizes of palm swiping devices can be compatible.

[0042] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0043] Combining Figure 1 and Figure 2 As shown in the drawings, the present embodiment provides a palm swiping device, which comprises a shell assembly 1, a transparent cover plate 2, a light guide plate 3 and an optical module 4.

[0044] The transparent cover plate 2, the light guide plate 3 and the optical module 4 are arranged in the housing assembly 1 in sequence.

[0045] The optical module 4 comprises a first light emitting assembly 41, which is located on the side surface of the light guide plate 3 and can emit light towards the first incident surface 30a.

[0046] The brush palm device of the embodiment is provided with the light guide plate 3 below the transparent cover plate 2, the surface of the light guide plate 3 facing the transparent cover plate 2 is the first exit surface 30c, the side surface of the light guide plate 3 perpendicular to the stacking direction is the first incident surface 30a, the light guide plate 3 can turn the incident light from the first incident surface 30a to the first exit surface 30c, and the first exit surface 30c is used to provide illumination outwardly. The area of the light guide plate 3 is relatively large, and a surface light source structure can be formed to realize a large-area illumination range and good illumination brightness uniformity. In addition, the area of the light guide plate 3 can change with the product size of the brush palm device, and the brush palm device of different sizes can be compatible.

[0047] In some possible implementation manners, referring to Figure 5 , the housing assembly 1 has a receiving cavity 101, and the transparent cover plate 2, the light guide plate 3 and the optical module 4 are arranged in the receiving cavity 101 in sequence.

[0048] In some possible implementation manners, referring to Figure 1 and Figure 4 , the optical module 4 further comprises a camera assembly 43, and an axis of the camera assembly 43 is arranged along the stacking direction.

[0049] Exemplarily, the light guide plate 3 is provided with a relief hole 33, and the camera assembly 43 extends to the bottom of the transparent cover plate 2 through the relief hole 33.

[0050] Another example is that the camera assembly 43 comprises at least one camera. The type of the at least one camera includes but is not limited to an RGB camera, a black-and-white camera, an infrared camera and the like. The number of the cameras is, for example, one, two, three or the like.

[0051] The brush palm device of the embodiment can use the first light emitting assembly 41 and the light guide plate 3 to perform large-area supplementary lighting when the at least one camera is used to collect images of a palm, so as to ensure that the clarity of a palmprint image is high, thereby improving the recognition efficiency and reliability of the brush palm device.

[0052] In combination with Figure 3As shown, in some embodiments, the light guide plate 3 comprises a plurality of diffuse reflection structures 31, which are arranged on the first reflection surface 30b in a spaced manner, and the diffuse reflection structures 31 are capable of diffusely reflecting the light rays irradiated on the first reflection surface 30b towards the first exit surface 30c.

[0053] In order to avoid the light rays entering the light guide plate 3 from the first incident surface 30a only being totally reflected in the light guide plate 3, the plurality of diffuse reflection structures 31 are arranged on the first reflection surface 30b of the light guide plate 3, so that the light rays are diffusely reflected on the first reflection surface 30b, and the diffusely reflected light rays can be irradiated on the first exit surface 30c from a plurality of different angles, and most of the light rays can be transmitted or refracted out of the first exit surface 30c, thereby illuminating the first exit surface 30c of the light guide plate 3. In addition, the diffuse reflection structures 31 can make the light rays uniformly distributed in the light guide plate 3, thereby improving the brightness uniformity of the first exit surface 30c.

[0054] In combination Figure 4 As shown, in some embodiments, the diffuse reflection structures 31 comprise at least one of a point-like concave-convex structure, a textured concave-convex structure, a porous structure, and a doped particle structure. The above-mentioned structures can all make the light rays diffusely reflected on the first reflection surface 30b.

[0055] In combination Figure 4 As shown, in some embodiments, the first light emitting assembly 41 comprises a plurality of light emitting units 411, each of which is located at a side of the light guide plate 3 and is capable of emitting light rays towards the first incident surface 30a.

[0056] In order to ensure that the light rays in the light guide plate 3 are sufficient and uniform, the first light emitting assembly 41 has a plurality of light emitting units 411, and each of the light emitting units 411 is capable of emitting light rays towards the first incident surface 30a of the light guide plate 3, so that the light guide plate 3 can receive more light rays and achieve a higher brightness.

[0057] In combination Figure 4 As shown, in some embodiments, the plurality of light emitting units 411 are uniformly and spacedly arranged along the circumference of the light guide plate 3 and are capable of respectively emitting light rays towards the first incident surface 30a.

[0058] Through the above arrangement, the plurality of light emitting units 411 are uniformly and spacedly arranged at the side of the light guide plate 3, thereby providing a uniform light source for the light guide plate 3.

[0059] In combination Figure 4 As shown, in some embodiments, the optical module 4 further comprises a circuit board 42, which is located at a side of the light guide plate 3 away from the transparent cover plate 2, and the plurality of light emitting units 411 are respectively integrated on the surface of the circuit board 42 towards the light guide plate 3.

[0060] Through the arrangement, the structure compactness of the brush palm device is higher, and assembly convenience and function reliability of the brush palm device are improved.

[0061] In some possible implementation manners, the circuit board 42 includes a printed circuit board (PCB), a flexible printed circuit board (FPC), a rigid-flexible combined board, or the like.

[0062] In combination Figure 3 As shown in the drawings, in some embodiments, the light guide plate 3 further includes a reflective film 32 attached to the first reflective surface 30b. Through the reflective film 32 attached to the first reflective surface 30b, the reflective property of the first reflective surface 30b can be improved, and light leakage from the first reflective surface 30b can be avoided, thereby avoiding light source waste.

[0063] In combination Figure 5 As shown in the drawings, in some embodiments, the brush palm device further includes a support plate 5 located between the transparent cover plate 2 and the light guide plate 3, and at least abutting with the transparent cover plate 2 along the stacking direction.

[0064] The support plate 5 includes a second incident surface 50a and a second exit surface 50b. The second incident surface 50a is located on a surface of the support plate 5 facing the light guide plate 3 and is parallel to the first exit surface 30c. The second exit surface 50b is located on a surface of the support plate 5 facing the transparent cover plate 2.

[0065] Through the arrangement, the support plate 5 can provide internal support for the transparent cover plate 2 without affecting the light emission of the light guide plate 3, thereby improving the safety of the transparent cover plate 2.

[0066] In combination Figure 5 As shown in the drawings, in some embodiments, the second incident surface 50a has a smaller area of the orthographic projection along the stacking direction than the second exit surface 50b.

[0067] The support plate 5 further includes a second reflective surface 50c located on a side surface of the support plate 5. The second reflective surface 50c is used for reflecting and expanding the light entering the second incident surface 50a to the entire second exit surface 50b.

[0068] Through the arrangement, the area of the second incident surface 50a of the support plate 5 is smaller than the second exit surface 50b, so that a conical second reflective surface 50c can be formed on the side surface. The second reflective surface 50c can perform conical diffusion on the light entering the second incident surface 50a, so that the light emission area at the transparent cover plate 2 is increased, and the illumination range of the brush palm device is further improved.

[0069] In some embodiments, a light-diffusing film is attached to at least one of the first emitting surface 30c and the second emitting surface 50b. The light-diffusing film can improve the light-diffusing characteristics of the first emitting surface 30c or the second emitting surface 50b, thereby improving the lighting effect.

[0070] Combination Figure 1 and Figure 5 As shown, in some embodiments, the palm-swiping device further includes an interactive aperture 6 and a second light-emitting component 7. The interactive aperture 6 is connected to the housing assembly 1, and at least a portion of the interactive aperture 6 surrounds the periphery of the transparent cover plate 2. The second light-emitting component 7 is located inside the housing assembly 1 and is arranged toward the third incident surface 61 of the interactive aperture 6. The second light-emitting component 7 is used to emit light toward the third incident surface 61.

[0071] To improve the interactive performance of the palm-swiping device, an interactive light ring 6 is arranged around the transparent cover 2. The interactive light ring 6 uses a second light-emitting component 7 to provide a light source. The second light-emitting component 7 can emit different lights in response to the working state of the palm-swiping device, thereby realizing device interaction.

[0072] Among some possible implementations, refer to Figure 5 As shown, the palm brushing device also includes a fixing frame 8, which is located inside the receiving cavity 101. The fixing member is located on the side of the support plate 5 and is used to provide support for the support plate 5 from the bottom to prevent the support plate 5 from squeezing the light guide plate 3 and the optical module 4 inward.

[0073] In some possible implementations, the palm-scanning device also includes a control component electrically connected to the optical module. Optionally, the control component may store multiple candidate palmprint images. Exemplarily, the control component is a CPU (Central Processing Unit) capable of image processing.

[0074] In some possible implementations, the palm-swiping device also includes a distance sensor, which activates the first light-emitting component and the camera component when the distance sensor detects that the distance to the user's palm is less than or equal to a target value.

[0075] For example, the identification device provided in this application embodiment can be used in at least one of the following scenarios: payment scenario and identity authentication scenario.

[0076] For example, scanning palm print information with a recognition device enables contactless mobile payment, which can improve payment efficiency; similarly, scanning palm print information with a recognition device enables contactless identity authentication, which can improve the accuracy of identity authentication.

[0077] After the palm print image is acquired by the palm print device, the palm print image can be processed to realize the identity authentication. Optionally, the image processor is arranged in the inside of the recognition device, and the control component can acquire the processing of the palm print image by the image processor through the electrical connection between the image processor and the control component, so as to realize the authentication and judgment of the identity information.

[0078] In an optional implementation scenario, the image processor can also be arranged on an external device of the recognition device. For example, the image processor is arranged on an external computer, and the recognition device and the external computer are connected through a communication connection, and the identity information can be transmitted to the image processor through the communication connection. At this time, the external interface has a data transmission function, and the recognition device can be connected with the external computer through the external interface to transmit the identity information.

[0079] It should be noted that "several", "at least one" in the present disclosure means one or more, "several", "at least two" means two or more. "And / or" describes the association between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0080] In the description of the present disclosure, the description of the terms "some embodiments", "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present disclosure.

[0081] The above only describes the embodiments of the present disclosure, and does not limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A palm brushing apparatus, characterized by, The brush palm device comprises a shell assembly (1), a transparent cover plate (2), a light guide plate (3) and an optical module (4); The transparent cover plate (2), the light guide plate (3) and the optical module (4) are sequentially stacked in the shell assembly (1); The light guide plate (3) comprises a first incident surface (30a), a first reflection surface (30b) and a first exit surface (30c), the first reflection surface (30b) is located on the surface of the light guide plate (3) facing the optical module (4), the first exit surface (30c) is located on the surface of the light guide plate (3) facing the transparent cover plate (2), and the first incident surface (30a) is located on the side surface of the light guide plate (3) perpendicular to the stacking direction; The optical module (4) comprises a first light emitting assembly (41), and the first light emitting assembly (41) is located on the side surface of the light guide plate (3) and can emit light towards the first incident surface (30a).

2. The brush palm apparatus of claim 1, wherein, The light guide plate (3) comprises a plurality of diffuse reflection structures (31) arranged on the first reflection surface (30b), and the diffuse reflection structures (31) can diffuse the light incident on the first reflection surface (30b) towards the first exit surface (30c).

3. The brush palm apparatus of claim 2, wherein, The diffuse reflection structure (31) comprises at least one of a point-like concave-convex structure, a textured concave-convex structure, a porous structure and an incorporated particle structure.

4. The brush palm apparatus according to any one of claims 1 to 3, characterized in that, The first light emitting assembly (41) comprises a plurality of light emitting units (411), and each light emitting unit (411) is located on the side surface of the light guide plate (3) and can emit light towards the first incident surface (30a).

5. The brush palm apparatus of claim 4, wherein, A plurality of light emitting units (411) are uniformly and spacedly arranged along the circumference of the light guide plate (3) and can respectively emit light towards the first incident surface (30a).

6. The brush palm apparatus of claim 4, wherein, The optical module (4) further comprises a circuit board (42), the circuit board (42) is located on the side of the light guide plate (3) away from the transparent cover plate (2), and the plurality of light emitting units (411) are respectively arranged on the surface of the circuit board (42) facing the light guide plate (3); And / or, The light guide plate (3) further comprises a reflective film (32) attached to the first reflection surface (30b).

7. The brush palm apparatus according to any one of claims 1 to 3, wherein, The brush palm device further comprises a support plate (5) located between the transparent cover plate (2) and the light guide plate (3) and abutting against the transparent cover plate (2) in the stacking direction; The support plate (5) comprises a second incident surface (50a) and a second exit surface (50b), the second incident surface (50a) is located on the surface of the support plate (5) facing the light guide plate (3) and is parallel to the first exit surface (30c), and the second exit surface (50b) is located on the surface of the support plate (5) facing the transparent cover plate (2).

8. The brush palm apparatus of claim 7, wherein, The projection area of the second incident surface (50a) along the stacking direction is smaller than the projection area of the second exit surface (50b) along the stacking direction. The support plate (5) further comprises a second reflecting surface (50c) located on the side of the support plate (5), the second reflecting surface (50c) being used for reflecting and spreading the light rays entering the second incident surface (50a) to the entire second exit surface (50b).

9. The brush palm apparatus of claim 7, wherein, At least one of the first exit surface (30c) and the second exit surface (50b) is attached with a light homogenizing film.

10. The brush palm apparatus according to any one of claims 1 to 3, wherein, The brush palm device further comprises an interactive light ring (6) and a second light emitting assembly (7), the interactive light ring (6) being connected with the shell assembly (1), and at least part of the interactive light ring (6) surrounding the periphery of the transparent cover plate (2), the second light emitting assembly (7) being located in the shell assembly (1), the second light emitting assembly (7) being arranged towards a third incident surface (61) of the interactive light ring (6), and the second light emitting assembly (7) being used for emitting light rays towards the third incident surface (61).

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