Illumination assembly and brush palm equipment

Abstract

The utility model provides a lighting assembly and brush palm equipment, and belongs to the technical field of biological recognition. The lighting assembly comprises a light source part and a light guide part. The light guide part comprises a first forming part and a second forming part, a first optical structure is arranged between the first forming part and the second forming part, a light inlet face is arranged on the side, back to the second forming part, of the first forming part, and a light outlet face is arranged on the side, back to the first forming part, of the second forming part. The position of the light source piece corresponds to the light inlet face, light emitted by the light source piece enters the first forming part through the light inlet face, light in the first forming part enters the second forming part after being processed by the first optical structure, and light in the second forming part is emitted out through the light outlet face. According to the lighting assembly, the first optical structure is located in the light guide part, the design difficulty is low, the design freedom degree is high, and the light distribution capacity of the lighting assembly can be greatly improved.

Description

Technical Field

[0001] The present application relates to the field of biometric identification technology, and in particular to a lighting component and a palm brushing device. Background Art

[0002] With the promotion and application of convenient payment, more and more scenarios in daily life need to rely on biometric technology to realize user identity recognition. Among them, palm swiping recognition is portable and contactless, thus bringing a good identity recognition experience.

[0003] In the related art, palm recognition usually requires supplementary lighting of the user's palm to obtain a clear palm print image. However, due to the structure of the lighting component, the uniformity of the supplementary lighting is poor, resulting in obvious differences in light and dark in the palm print image, which affects the recognition efficiency and reliability of palm recognition. Utility Model Content

[0004] The present application provides an illumination component and a palm brushing device, which can solve the problem that the light uniformity of the fill light is poor, resulting in obvious light and dark differences in the palm print image, affecting the recognition efficiency and reliability of the palm brushing recognition.

[0005] The technical solution is as follows:

[0006] In one aspect, a lighting assembly is provided, the lighting assembly comprising: a light source component and a light guide component;

[0007] The light guide comprises a first molding part and a second molding part, a first optical structure is arranged between the first molding part and the second molding part, a light-incoming surface is arranged on a side of the first molding part facing away from the second molding part, and a light-emitting surface is arranged on a side of the second molding part facing away from the first molding part;

[0008] The position of the light source component corresponds to the light-incoming surface, the light emitted by the light source component enters the first molding part through the light-incoming surface, the light in the first molding part enters the second molding part after being processed by the first optical structure, and the light in the second molding part is emitted through the light-emitting surface.

[0009] On the other hand, a palm brushing device is provided, comprising: the lighting assembly described in the present application, and at least one camera; the lighting assembly is located on one side of the at least one camera.

[0010] The beneficial effects of the technical solution provided by this application include at least:

[0011] The lighting assembly of the present application includes a light source and a light guide, wherein the light guide includes a first molding part and a second molding part, and a first optical structure is arranged between the first molding part and the second molding part, so that the light emitted by the light source is processed by the first optical structure during the transmission from the first molding part to the second molding part, so that the light output outward by the light guide has a more suitable fill-in light effect, such as a larger irradiation field angle and better light uniformity, which is beneficial to improve the fill-in light effect and improve the recognition efficiency and reliability of brush palm recognition; the first optical structure is located inside the light guide, with low design difficulty and high design freedom, which can greatly enhance the light distribution capacity of the lighting assembly; in addition, by using the first optical structure arranged between the first molding part and the second molding part to process the light, the optical structure of the light emitting surface of the light guide can be reduced or simplified, thereby improving the appearance flatness of the light emitting surface of the light guide, which is beneficial to improving the cleaning convenience and damage resistance of the light emitting surface of the light guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 is a schematic diagram of the structure of a lighting assembly provided in an embodiment of the present application;

[0014] Figure 2 is a schematic structural diagram of a lighting assembly provided by another embodiment of the present application;

[0015] Figure 3 is a schematic diagram of the structure of a palm brushing device provided in an embodiment of the present application;

[0016] Figure 4 It is a structural cross-sectional view of the palm brushing device provided in an embodiment of the present application.

[0017] The reference numerals in the figures represent respectively:

[0018] 1. Light source components;

[0019] 2. Light guide;

[0020] 201, light-incoming surface; 202, light-exiting surface;

[0021] 21. first molding part; 22. second molding part; 23. first optical structure; 24. second optical structure; 25. third optical structure; 26. supporting part;

[0022] 3. Camera;

[0023] 4. Circuit board;

[0024] 5. Cover plate. DETAILED DESCRIPTION

[0025] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0028] Among the convenient and contactless biometric technologies provided by related technologies, palm recognition is a type of technology that can bring users a good identity recognition experience. In this technology category, it is necessary to collect the palm prints on the surface of the user's palm, so a light source is inevitably needed to illuminate the user's palm as the light transmitting end, and a camera is also needed as the receiving end after the light shines on the palm and carries the relevant information optical signal.

[0029] In the process of palm print collection, it is necessary to ensure that the fill light is uniform and bright enough within the working range of the entire palm print collection device. Therefore, the lighting system needs good light distribution capabilities to ensure the image quality of the palm.

[0030] The related method is to improve the illumination uniformity and illumination efficiency by adding a light guide, and to improve the optical performance of the illumination system by adjusting various related factors. In addition, the optical performance of the light guide is adjusted by adjusting factors such as the refractive index and surface curvature of the light guide.

[0031] However, after the material of the light guide is determined, the only factors that can effectively control the light emission path are the surface curvatures of the light-inlet and light-outlet surfaces, which can be reversely designed and fitted according to the required light projection position. When dealing with complex lighting requirements, it will be difficult to meet these few designable factors, so it is difficult to achieve the best optical distribution performance.

[0032] Therefore, the present application provides a lighting component that uses a first optical structure to process light. The first optical structure is located inside the light guide, has low design difficulty, has a high degree of design freedom, and can greatly improve the light distribution capability of the lighting component.

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0034] On the one hand, combined with Figure 1 As shown, this embodiment provides a lighting assembly, which includes: a light source component 1 and a light guide component 2.

[0035] The light guide 2 includes a first molding part 21 and a second molding part 22 , a first optical structure 23 is provided between the first molding part 21 and the second molding part 22 , a light input surface 201 is provided on the side of the first molding part 21 facing away from the second molding part 22 , and a light output surface 202 is provided on the side of the second molding part 22 facing away from the first molding part 21 .

[0036] The position of the light source component 1 corresponds to the light incident surface 201 . The light emitted by the light source component 1 enters the first molding part 21 through the light incident surface 201 . The light in the first molding part 21 enters the second molding part 22 after being processed by the first optical structure 23 . The light in the second molding part 22 is emitted through the light emitting surface 202 .

[0037] The lighting assembly of the present application includes a light source component 1 and a light guide component 2, wherein the light guide component 2 includes a first molding part 21 and a second molding part 22, and a first optical structure 23 is provided between the first molding part 21 and the second molding part 22, so that the light emitted by the light source component 1 is processed by the first optical structure 23 during the transmission process from the first molding part 21 to the second molding part 22, so that the light output outward by the light guide component 2 has a more suitable fill light effect, such as a larger illumination field angle and better light uniformity, which is beneficial to improve the fill light effect and improve the recognition efficiency and reliability of palm brush recognition.

[0038] The first optical structure 23 is located inside the light guide 2 , has low design difficulty, has a high degree of design freedom, and can greatly improve the light distribution capability of the lighting assembly.

[0039] In addition, by using the first optical structure 23 arranged between the first molding part 21 and the second molding part 22 to process light, the optical structure of the light emitting surface 202 of the light guide 2 can be reduced or simplified, thereby improving the appearance smoothness of the light emitting surface 202 of the light guide 2, which is beneficial to improving the cleaning convenience and damage resistance of the light emitting surface 202 of the light guide 2.

[0040] In some possible implementations, the light guide 2 is a two-shot injection molding structure, one of the first molding part 21 and the second molding part 22 is molded in the first injection molding process, and the other of the first molding part 21 and the second molding part 22 is molded in the second injection molding process. Exemplarily, the first molding part 21 is molded in the first injection molding process, and the second molding part 22 is molded based on the first molding part 21 in the second injection molding process; or, the second molding part 22 is molded in the first injection molding process, and the first molding part 21 is molded based on the second molding part 22 in the second injection molding process.

[0041] The first optical structure 23 may be integrally injection molded with the molding part of the first injection molding, or may be formed by processing on the structural body of the molding part of the first injection molding.

[0042] The first optical structure 23 is covered by the first molding part 21 and the second molding part 22 , and will not be worn or contaminated, which can greatly improve the flexibility of optical design and the light processing capability.

[0043] In some possible implementations, the type of the at least one camera 3 includes but is not limited to: an RGB camera 3, a black and white camera 3, an infrared camera 3, etc. The number of the cameras 3 may be, for example, one, two, three, etc.

[0044] In some embodiments, the first optical structure 23 is at least one of a Fresnel structure, a convex structure, and a concave structure. When the first optical structure 23 is at least one of the above, the light output by the first molding part 21 can be optically processed to improve the fill light effect of the lighting assembly.

[0045] Combination Figure 1 As shown, in some embodiments, the light emitting surface 202 is provided with a second optical structure 24 , and the light from the second forming portion 22 is processed by the second optical structure 24 and then emitted.

[0046] Through the above arrangement, the light can be distributed through the first optical structure 23 and the second optical structure 24 in sequence, and the light distribution effect is greatly improved, meeting the fill light demand of the palm brushing device.

[0047] In some embodiments, the second optical structure 24 is at least one of a Fresnel structure, a convex structure, and a concave structure. When the second optical structure 24 is at least one of the above, the light output by the second molding part 22 can be optically processed to improve the fill light effect of the lighting assembly.

[0048] In some embodiments, the optical parameters of the first molding part 21 are different from the optical parameters of the second molding part 22. By differentially arranging the optical parameters of the first molding part 21 and the second molding part 22, the light path changes once after the light enters the second molding part 22 from the first molding part 21, thereby adding a design dimension of light distribution to the light guide 2, further improving the designability and adjustability of the lighting assembly, so as to well cope with the supplementary lighting requirements under complex conditions.

[0049] In some embodiments, the optical parameter is one or more of the following: refractive index, optical density, transmittance, diffusion coefficient, dispersion coefficient. Optionally, the refractive index of the first molding portion 21 is different from the refractive index of the second molding portion 22 .

[0050] Combination Figure 2 As shown, in some embodiments, the light-incoming surface 201 is provided with a third optical structure 25, and the light emitted by the light source 1 enters the first molding portion 21 after being processed by the third optical structure 25. The third optical structure 25 is at least one of a Fresnel structure, a convex structure, and a concave structure.

[0051] Through the above arrangement, the light emitted by the light source 1 can be optically processed once by the third optical structure 25 before entering the first molding portion 21, which can increase a design dimension of light distribution.

[0052] In the lighting component of the present application, the light guide 2 can sequentially utilize the third optical structure 25, the refractive index difference between the first molded portion 21 and the second molded portion 22, the first optical structure 23 and the second optical structure 24 to perform multiple optical processing on the light emitted by the light source 1. Compared with the related technology, the design freedom and fill light performance of the lighting component of the present application are greatly improved, which can better meet the fill light needs under complex conditions.

[0053] On the other hand, combined Figure 3 and Figure 4 As shown, this embodiment provides a palm brushing device, which includes: the lighting component of the present application, and at least one camera 3; the lighting component is located on one side of the at least one camera 3.

[0054] The palm scanning device of this embodiment adopts the lighting component of the present application. When using at least one camera 3 to capture the image of the palm, the lighting component can be used for more flexible fill lighting to ensure high clarity of the palm print image, thereby improving the recognition efficiency and reliability of the palm scanning device.

[0055] Combination Figure 4 As shown, in some embodiments, there are multiple light source components 1, and the multiple light source components 1 are arranged around at least one camera 3; the first forming portion 21 and the second forming portion 22 are both annular structures surrounding at least one camera 3. By using the multiple light source components 1 arranged around the camera 3 and the light guide component 2 with an annular structure, the surrounding area of ​​the camera 3 can be uniformly and efficiently supplemented with light.

[0056] Combination Figure 4 As shown, in some embodiments, the palm brush device further includes a circuit board 4, and at least one camera 3 and a light source 1 are respectively integrated and connected to the surface of the circuit board 4. Through the above arrangement, the palm brush device has a more compact structure, which is conducive to improving the assembly convenience and functional reliability of the palm brush device.

[0057] Combination Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the palm brushing device further comprises a cover plate 5, and the light guide 2 is provided with a support portion 26, and the support portion 26 supports the cover plate 5 above at least one camera 3. The cover plate 5 can be used to protect the camera 3.

[0058] In some possible implementations, the palm scanning device further includes a control component, which is electrically connected to the camera 3. Optionally, a plurality of candidate palm print images may be stored in the control component. Exemplarily, the control component is a CPU (Central Processing Unit) capable of image processing.

[0059] Through the electrical connection between the control component and the camera 3, the control component can obtain the palm print image sent by the camera 3, and by comparing the palm print image with the candidate palm print images, the control component can determine the target identity corresponding to the palm print image.

[0060] Exemplarily, the identification device provided in the embodiments of the present application can be used in at least one of a payment scenario and an identity authentication scenario.

[0061] For example, by using an identification device to scan palm print information, contactless mobile payment can be achieved, which can improve payment efficiency. For another example, by using an identification device to scan palm print information, contactless identity authentication can be achieved, which can improve the accuracy of identity authentication.

[0062] After the palm scanning device obtains the palm print image, it can process the image to achieve identity authentication. Optionally, the recognition device has an image processor inside, and through the electrical connection between the image processor and the control component, the control component can obtain the processing of the palm print image by the image processor, thereby achieving authentication and judgment of identity information.

[0063] In an optional implementation scenario, the image processor may also be located on an external device of the recognition device. Exemplarily, the image processor is located on an external computer, and there is a communication connection between the recognition device and the external computer, and the identity information can be sent to the image processor through the communication connection. In this case, the external interface has a data transmission function, and the recognition device can use the external interface to connect to the external computer to transmit the identity information.

[0064] It should be noted that the "several" and "at least one" mentioned in this article refer to one or more, and "multiple" and "at least two" refer to two or more. "And / or" describes the association relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0065] In the description of this specification, the description with reference to the terms "certain 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.

[0066] The above descriptions are merely embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A lighting assembly, characterized in that: The lighting assembly comprises: a light source component (1) and a light guide component (2); The light guide member (2) comprises a first molding portion (21) and a second molding portion (22); a first optical structure (23) is provided between the first molding portion (21) and the second molding portion (22); a light inlet surface (201) is provided on a side of the first molding portion (21) facing away from the second molding portion (22); and a light outlet surface (202) is provided on a side of the second molding portion (22) facing away from the first molding portion (21); The position of the light source component (1) corresponds to the light-incoming surface (201); the light emitted by the light source component (1) enters the first molding part (21) through the light-incoming surface (201); the light in the first molding part (21) enters the second molding part (22) after being processed by the first optical structure (23); and the light in the second molding part (22) is emitted through the light-emitting surface (202).

2. The lighting assembly according to claim 1, characterized in that The light emitting surface (202) is provided with a second optical structure (24), and the light from the second forming portion (22) is processed by the second optical structure (24) and then emitted.

3. The lighting assembly according to claim 2, characterized in that The first optical structure (23) is at least one of a Fresnel structure, a convex structure, and a concave structure; and / or, The second optical structure (24) is at least one of a Fresnel structure, a convex structure, and a concave structure.

4. The lighting assembly according to any one of claims 1 to 3, characterized in that: The optical parameters of the first molded portion (21) are different from the optical parameters of the second molded portion (22).

5. The lighting assembly according to claim 4, characterized in that The optical parameter is one or more of the following: refractive index, optical density, transmittance, diffusion coefficient, dispersion coefficient.

6. The lighting assembly according to claim 1, characterized in that The light-incoming surface (201) is provided with a third optical structure (25), and the light emitted by the light source component (1) enters the first molding portion (21) after being processed by the third optical structure (25), and the third optical structure (25) is at least one of a Fresnel structure, a convex structure, and a concave structure.

7. A palm brushing device, characterized in that: The palm-brushing device comprises: the lighting assembly according to any one of claims 1 to 6, and at least one camera (3); the lighting assembly is located on one side of the at least one camera (3).

8. The palm brushing device according to claim 7, characterized in that: The number of the light source components (1) is multiple, and the multiple light source components (1) are arranged around the at least one camera (3); the first molding portion (21) and the second molding portion (22) are both annular structures surrounding the at least one camera (3).

9. The palm brushing device according to claim 8, characterized in that: The palm-brushing device further comprises a circuit board (4), and the at least one camera (3) and the light source component (1) are respectively integrated and connected to the surface of the circuit board (4).

10. The palm brushing device according to claim 8, characterized in that: The palm-brushing device further comprises a cover plate member (5), the light guide member (2) is provided with a support portion (26), and the support portion (26) supports the cover plate member (5) above the at least one camera (3).

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