Lateral light supplementing brush palm equipment

Abstract

A lateral light supplement brush palm device is characterized by comprising a display screen which comprises a transparent cover plate and a display unit; the light guide ring comprises a light emitting surface, is positioned on the side surface of the display screen, surrounds the display screen and is used for guiding at least part of incident light to the light emitting surface to be uniformly emitted; the light supplementing lamp is used for emitting light to the light guide ring; the light guide ring further comprises a first reflecting face used for guiding light rays of the light supplementing lamp to the light emitting face. The light supplementing lamp emits light laterally, the light guide ring changes the direction of the light of the light supplementing lamp through the reflecting surface, the light is finally emitted from the light emitting surface, the light uniformizing effect is best through the consistent illumination in all directions, and a clearer palm image can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of palm brushing, and specifically, to a lateral supplementary light palm brushing device. Background Art

[0002] As a new biometric technology, the palm brushing device has broad application prospects. Its application fields include but are not limited to the following aspects:

[0003] Access control system: In places such as office buildings, residential communities, and parks, the palm brushing device can be used in the access control system to conduct efficient and secure identity verification and management of people entering and leaving. Through palmprint and palm vein recognition technologies, it ensures that only authorized personnel can enter and leave specific areas.

[0004] Mobile payment: Palm brushing payment is the application of the palm brushing device in the payment field. Users only need to place their palms on the palm brushing device to achieve fast and secure payment operations. This payment method eliminates the need to carry a mobile phone or wallet, improving the convenience and security of payment.

[0005] Smart campus: On campus, the palm brushing device can be used for identity verification and attendance management of students, teachers, and logistics staff. By brushing the palm, the identity of people entering and leaving the campus can be verified, and attendance information can be accurately recorded.

[0006] Digital healthcare: Inside the hospital, the palm brushing device can be used in scenarios such as key drug management, doctor and nurse on-duty attendance, etc. In addition, it can also be used for patient identity verification and medical record management, as well as registration and payment, improving the efficiency and security of medical services.

[0007] New retail: In retail places such as shopping malls or supermarkets, customers can use the palm brushing device for membership registration and consumption payment to enjoy a more convenient shopping experience.

[0008] Smart city: In the construction of a smart city, the palm brushing device can provide more efficient and secure access management for public facilities such as libraries and gymnasiums. At the same time, it can also be used in scenarios such as the city's all-in-one service and bus payment systems to enhance the intelligent level of urban management.

[0009] In practical applications, the palm brushing device usually combines visible light supplementary light and infrared supplementary light technologies to ensure high-quality palmprint and palm vein images can be obtained under various light conditions. At the same time, the palm brushing device is also equipped with advanced image processing algorithms and recognition algorithms, which can quickly and accurately analyze and process the collected images, thereby achieving efficient and secure identity verification and payment operations.

[0010] During the recognition process of the palm brushing device, in order to improve the accuracy and stability of recognition, supplementary light technology is usually adopted. The supplementary light technology mainly includes two types: visible light supplementary light and infrared supplementary light.

[0011] Visible light fill light: The palm is filled with light through a visible light source, making features such as palm prints and palm veins more clearly visible. This fill light method is suitable for scenarios with relatively dim light or darker palm colors.

[0012] Infrared fill light: The palm is filled with light using an infrared light source. Since infrared light can penetrate the skin surface, internal features such as palm veins can be captured more accurately. Infrared fill light technology is of great significance for improving the accuracy and stability of identification.

[0013] To obtain a clear palm image, a uniform fill light effect is often required. In the prior art, a light guide ring is often used for light homogenization. However, when a brush palm device is provided with components such as a display screen, due to connections and the like, the light guide ring cannot evenly fill the light.

[0014] The disclosure of the above background technical content is only used to assist in understanding the inventive concept and technical solution of the present utility model. It does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Utility Model

[0015] Therefore, in the present utility model, the fill light lamp emits light laterally. The light guide ring changes the direction of the light of the fill light lamp through a reflection surface and finally emits the light from the light exit surface, and the light homogenization effect is the best through the light of consistent directions in all directions, which is beneficial to obtaining a clearer palm image.

[0016] The present utility model provides a laterally fill-lighting brush palm device, which is characterized by including:

[0017] A display screen, including a transparent cover plate and a display unit;

[0018] A light guide ring, including a light exit surface, located on the side of the display screen and surrounding the display screen, for guiding at least part of the incident light to the light exit surface for uniform emission;

[0019] A fill light lamp, for emitting light towards the light guide ring;

[0020] The light guide ring further includes a first reflection surface for guiding the light of the fill light lamp to the light exit surface.

[0021] Optionally, in the laterally fill-lighting brush palm device, the low point position of the first reflection surface is lower than the upper surface of the transparent cover plate.

[0022] Optionally, in the laterally fill-lighting brush palm device, the light guide ring further includes a second reflection surface, and the low point of the second reflection surface is higher than the upper surface of the transparent cover plate.

[0023] Optionally, for the described lateral supplementary light palm-sweeping device, the included angle between the second reflecting surface and the transparent cover plate is greater than the included angle between the first reflecting surface and the transparent cover plate.

[0024] Optionally, for the described lateral supplementary light palm-sweeping device, the high point of the second reflecting surface is connected to the transparent cover plate through a first surface pointing to the transparent cover plate.

[0025] Optionally, for the described lateral supplementary light palm-sweeping device, the space between the second reflecting surface and the first surface is hollow.

[0026] Optionally, for the described lateral supplementary light palm-sweeping device, a second surface is provided on the opposite side of the first surface and the second reflecting surface; the protruding part of the light guide ring is between the first surface and the second surface.

[0027] Optionally, for the described lateral supplementary light palm-sweeping device, the second surface is located outside the display unit.

[0028] Optionally, for the described lateral supplementary light palm-sweeping device, the first reflecting surface and the second reflecting surface are total reflection surfaces.

[0029] Optionally, for the described lateral supplementary light palm-sweeping device, the high point of the first reflecting surface is the low point of the second reflecting surface.

[0030] Compared with the prior art, the utility model has the following beneficial effects:

[0031] In the utility model, the supplementary light lamp emits light laterally. The light guide ring changes the direction of the light of the supplementary light lamp through the reflecting surface and finally emits the light from the light-emitting surface. Only a smaller thickness is required, which is beneficial to the miniaturization of the device and has a high light utilization efficiency.

[0032] Through a unified optical path design, the utility model can also achieve uniform optical path irradiation for an irregular display screen. Through consistent light illumination in all directions, the light homogenization effect is the best, which is beneficial to obtaining a clearer palm image. Description of the Drawings

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings. By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objectives, and advantages of the present invention will become more obvious:

[0034] Figure 1 Structural schematic diagram of a lateral light supplementing palm brushing device in an embodiment of the present invention;

[0035] Figure 2 Cross-sectional structure schematic diagram of a lateral light supplementing palm brushing device in an embodiment of the present invention;

[0036] Figure 3 Another cross-sectional structure schematic diagram of a lateral light supplementing palm brushing device in an embodiment of the present invention;

[0037] Figure 4 Another cross-sectional structure schematic diagram of a lateral light supplementing palm brushing device in an embodiment of the present invention;

[0038] Figure 5 Cross-sectional schematic diagram of the protrusion in an embodiment of the present invention;

[0039] Figure 6 Optical path schematic diagram in an embodiment of the present invention.

[0040] 1 - Display screen;

[0041] 2 - Light guide ring;

[0042] 3 - Supplementary light lamp;

[0043] 4 - Transparent cover plate;

[0044] 5 - Display unit;

[0045] 6 - Light output surface;

[0046] 7 - First reflection surface;

[0047] 8 - Second reflection surface;

[0048] 9 - First surface;

[0049] 10 - Second surface;

[0050] 11 - Protrusion;

[0051] 12 - Reflective film; Detailed implementation manners

[0052] The present utility model will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made. These all belong to the protection scope of the present utility model.

[0053] The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims and above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described here, for example, can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0054] A lateral supplementary lighting palm-sweeping device provided by an embodiment of the present utility model aims to solve the problems existing in the prior art.

[0055] The technical solution of the present utility model and how the technical solution of the present application solves the above technical problems will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present utility model will be described below in conjunction with the drawings.

[0056] In the present utility model, the light lamp emits light laterally. The light guide ring changes the direction of the light of the supplementary light lamp through the reflecting surface, and finally emits the light from the light-emitting surface, and the best light homogenization effect is achieved through the light illumination in all directions, which is beneficial to obtaining a clearer palm image.

[0057] As Figure 1 and Figure 2 shown, a lateral supplementary lighting palm-sweeping device in an embodiment of the present utility model includes:

[0058] A display screen 1, including a transparent cover plate and a display unit.

[0059] Specifically, the transparent cover plate is located on the outermost layer of the display screen. Its main function is to protect the internal display unit from physical damage (such as scratches and impacts) and liquid intrusion. At the same time, the transparent cover plate needs to have good light transmittance to ensure the clear visibility of the internal display content. The display unit is the core part of the display screen and is responsible for displaying information such as images and texts. In the palm-sweeping device, the display unit may be used to display operation guides, user information, identification status, etc. The display unit usually adopts technologies such as LCD and OLED to achieve high-definition, high-color saturation, and low-power consumption display effects. Usually, the area of the transparent cover plate is larger than that of the display unit.

[0060] The light guide ring, including a light-emitting surface, is located on the side of the display screen and surrounds the display screen, and is used to guide at least part of the incident light to the light-emitting surface for uniform emission.

[0061] Specifically, the light-emitting surface is the side of the light guide ring facing the user, and is designed to softly illuminate the palm area with light. The light-emitting surface is usually made of a material with high light transmittance and scattering characteristics to ensure relatively uniform light distribution, reduce glare and shadows. It should be noted that the light on the light-emitting surface is not necessarily evenly distributed, but is adjusted according to the size of the palm-sweeping device, the working distance, etc. For example, the brightness of the palm area is higher than that of other areas, so the light path projects more light to the central area of the palm-sweeping device, that is, the area of the display screen, and projects less light to other areas. The first reflecting surface is located inside the light guide ring and on the side opposite to the supplementary light lamp. Its main function is to efficiently guide the light emitted by the supplementary light lamp to the light-emitting surface. The first reflecting surface can be made of a material with a high reflectivity, such as mirror aluminum or silver-plated material, etc., to improve the light utilization rate and light guiding efficiency. The first reflecting surface can also be a flat surface, and the specular reflection is used to achieve the reflection of light, so as to reduce the production and manufacturing cost.

[0062] The supplementary light lamp 3 is used to emit light towards the light guide ring.

[0063] Specifically, the supplementary light lamp is a light source component and is responsible for emitting light towards the light guide ring. The selection and configuration of the supplementary light lamp directly affect the lighting effect and recognition performance of the palm area. The supplementary light lamp can adopt various types such as LED and fluorescent lamp. LED has been widely used in modern electronic devices due to its advantages such as small size, low power consumption, long lifespan, and adjustable brightness. In the palm-sweeping device, high-brightness and low-heat-generating LEDs are usually selected as the supplementary light source. The irradiation angle of the supplementary light lamp is related to the position of the light guide ring, so that the supplementary light lamp irradiates the light guide ring at a specific angle. The parameters such as the brightness and color temperature of the supplementary light lamp can be precisely adjusted through the internal control system of the device. This adjustment can be automatically or manually adjusted according to different ambient light conditions and recognition requirements to achieve the best lighting effect and recognition performance.

[0064] When the device is working, the light emitted by the fill light enters the light guide ring and is captured by the first reflecting surface. After reflection, the light is guided to the light-emitting surface and then irradiated onto the palm after being processed by the light-emitting surface. In this embodiment, through the lateral fill light method, other components can also be arranged around and at the bottom of the display screen, which is beneficial for the device to be thinner and more portable.

[0065] In some embodiments, the low point of the first reflecting surface is lower than the upper surface of the transparent cover plate. This embodiment makes the arrangement among the fill light, the light guide ring, and the display screen more compact and reasonable. The light guide ring surrounds the side of the display screen, and the low-position first reflecting surface is used for light guiding, which not only saves space but also improves the aesthetics and practicality of the overall device. This structural layout helps to reduce the overall volume of the device, making it more suitable for use in various occasions, especially in places where space needs to be saved.

[0066] In some embodiments, as Figure 3 shown, the light guide ring further includes a second reflecting surface, and the low point of the second reflecting surface is higher than the upper surface of the transparent cover plate. Through the design of the second reflecting surface, more complex light control and more optimized lighting effects can be achieved. The design of the second reflecting surface can increase the reflection area of light in the light guide ring, further control the propagation path and distribution state of light, and improve the utilization rate of light. In some embodiments, the second reflecting surface can also be designed to have specific optical properties (such as focusing, divergence, etc.) to achieve special lighting effects. For example, by adjusting the shape of the second reflecting surface, the light can be focused on a specific area of the palm to enhance the lighting effect in that area. The first reflecting surface and the second reflecting surface need to work together to achieve the best optical effect. The relative position and angular relationship between them need to be precisely designed to ensure that the light can propagate and be distributed along the predetermined path.

[0067] In some embodiments, the included angle between the second reflecting surface and the transparent cover plate is greater than the included angle between the first reflecting surface and the transparent cover plate. The change in the included angle is to adapt to the change in the positional relationship between the light guide ring and the fill light position. The first reflecting surface is close to the display screen and has a lower position; while the second reflecting surface has a higher position and is farther from the display screen. The fill light also has a lower position and has a certain FOV when irradiating on the light guide ring. This results in different included angles between the light and the reflecting surfaces when the light irradiates on the first reflecting surface and the second reflecting surface. In this embodiment, the angle of the second reflecting surface is adjusted to make the second reflecting surface have a better reflection effect on the light while better controlling the light density, so that the light intensity on the light-emitting surface meets the design value.

[0068] In some embodiments, the high point of the second reflecting surface is connected to the transparent cover plate through a first surface pointing to the first surface of the transparent cover plate. The first surface passes through the high point of the second reflecting surface and intersects with the transparent cover plate. The first surface is a curved surface. From the sectional view, the first surface can be a straight line or a curve. It should be noted that when the light guide ring is circular, the first surface on each section is different. Due to assembly effects, the first surface is not always connected to the transparent cover plate, but there may be a certain gap, but the existence of the gap does not affect the content of this embodiment and still belongs to the protection scope of the present invention.

[0069] In some embodiments, as Figure 4 shown, the space between the second reflecting surface and the first surface is hollow. The space between the second reflecting surface and the first surface is hollow, so that the second reflecting surface can reflect light by specular reflection without using a reflective material, thus saving costs and increasing the stability and durability of the system.

[0070] In some embodiments, as Figure 4 shown, a second surface is provided on the opposite side of the first surface and the second reflecting surface; the protrusion of the light guide ring is between the first surface and the second surface. The second surface can be either a straight line or a curve like the first surface. The height of the second surface is greater than the height of the first surface. As Figure 6 shown, the cross-section of the protrusion can have various shapes. The protrusion can not only support the contact between the light guide ring and the display screen, but also enable the light passing through the first reflecting surface and the second reflecting surface to irradiate on the protrusion at a specific angle, exit at a specific angle, and irradiate on the palm, increasing the light utilization rate; at the same time, it also makes the appearance of the palm-sweeping device more beautiful. The optical effect of the protrusion is to make the light propagate away from the display screen, so that the palm gets more light and improves the light utilization efficiency.

[0071] In some embodiments, the second surface is located outside the display unit. As Figure 4 shown, in the x-axis direction, the second surface is located outside the display unit. Since the length of the transparent cover plate is greater than that of the display unit, the light guide ring in this embodiment is not located above the display unit but outside, which will not affect the display effect of the display unit. Preferably, there is also a distance m between the second surface and the display unit on the x-axis; where the size of the distance m is proportional to the height of the second surface.

[0072] In some embodiments, the first reflecting surface and the second reflecting surface are total reflecting surfaces. A total reflecting surface means that when light contacts these surfaces, almost no absorption or scattering occurs, but instead, the light is efficiently reflected back into the light guide ring or propagates along a predetermined path. This helps reduce light loss and improve light utilization efficiency. To achieve the total reflection effect, the material of the reflecting surface needs to have a high reflectivity and good optical properties. The materials of the first reflecting surface and the second reflecting surface include but are not limited to mirror aluminum, silver-plated materials, etc.

[0073] Figure 6 shows a schematic optical path diagram. From Figure 6 it can be seen that after the fill light emits light, the light irradiates into the light guide ring. Inside the light guide ring, after the light is reflected by the first reflecting surface and the second reflecting surface, most of the light exits from the light exit surface, and only a small part of the light exits from the protrusion, with a very high light utilization efficiency.

[0074] In some embodiments, the high point of the first reflecting surface is the low point of the second reflecting surface. The first reflecting surface and the second reflecting surface are connected to form a continuous reflecting surface, which can perform more continuous optical processing on all incident light and make the width of the light guide ring narrower, facilitating the miniaturization of the device.

[0075] In some embodiments, the diameter of the display unit is not greater than 50 cm, and the cross-sectional end point of the light exit surface is not the highest point of the light exit surface. When the diameter of the display unit is not greater than 50 cm, the palm brushing device is relatively small. Designing the light exit surface as a curved surface protruding upward can enable the palm to be well illuminated at both relatively close and relatively far distances, thereby obtaining a relatively uniform palm image. In this embodiment, when the display unit is circular, the diameter of the circle is the diameter of the display unit. When the display unit is not circular, the diameter refers to the equivalent diameter of the area of the display unit. For example, when the display unit is square with an area of a, the diameter of the circle with an area of a is the equivalent diameter, which is the diameter of the square. The diameter in subsequent embodiments is the same as that in this embodiment and will not be elaborated further in the subsequent part.

[0076] In some embodiments, the diameter of the display unit is not less than 50 cm, and at least one end point of the cross-section of the light exit surface is the highest point or the lowest point of the light exit surface. When the diameter of the display unit is not less than 50 cm, the shape of the light exit surface can be set according to the specific size of the palm brushing device, but at least one end point is the highest point or the lowest point of the light exit surface. When one end point is the highest point, usually the highest point is the outer end point to ensure that the light converges inward to irradiate the palm. When one end point is the lowest point, usually the lowest point is the inner end point to ensure that the light converges inward to irradiate the palm.

[0077] In some embodiments, the diameter of the display unit is not less than 70 cm, and one end point of the cross-section of the light-emitting surface is the highest point of the light-emitting surface. When the diameter of the display unit is not less than 70 cm, the size of the palm-sweeping device is relatively large, and the design of the light-emitting surface can be more flexible. In this embodiment, the outer end point of the light-emitting surface is the highest point, so that the light has a stronger converging effect in the middle of the palm, making the image in the middle of the palm clearer.

[0078] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0079] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A lateral supplementary lighting palm-brushing device, characterized in that, Comprising: A display screen, including a transparent cover plate and a display unit; A light guide ring, including a light-emitting surface, located on the side of the display screen and surrounding the display screen, for guiding at least part of the incident light to the light-emitting surface for uniform emission; A supplementary light, for emitting light towards the light guide ring; The light guide ring further includes a first reflecting surface, for guiding the light of the supplementary light to the light-emitting surface.

2. The side light supplementing palm brushing device according to claim 1, characterized in that, The low point position of the first reflecting surface is lower than the upper surface of the transparent cover plate.

3. The side light supplementing palm brushing device according to claim 1, characterized in that, The light guide ring further includes a second reflecting surface, and the low point of the second reflecting surface is higher than the upper surface of the transparent cover plate.

4. The lateral supplementary lighting palm-brushing device according to claim 3, wherein, The included angle between the second reflecting surface and the transparent cover plate is greater than the included angle between the first reflecting surface and the transparent cover plate.

5. The side light supplementing palm brushing device according to claim 3, characterized in that, The high point of the second reflecting surface is connected to the transparent cover plate through a first surface pointing to the transparent cover plate.

6. The side light supplementing palm brushing device according to claim 5, characterized in that, There is a hollow between the second reflecting surface and the first surface.

7. The lateral supplementary light palm-brushing device according to claim 5, characterized in that, A second surface is provided on the opposite side of the first surface and the second reflecting surface; the protrusion of the light guide ring is between the first surface and the second surface.

8. The side light supplementing palm brushing device according to claim 7, characterized in that, The second surface is located outside the display unit.

9. The side light supplementing palm brushing device according to claim 3, characterized in that, The first reflecting surface and the second reflecting surface are total reflection surfaces.

10. The side light supplementing palm brushing device according to claim 3, characterized in that, The high point of the first reflecting surface is the low point of the second reflecting surface.

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