A desktop telecentric read-write device with attached mask

Abstract

The utility model discloses a desktop telephoto reading and writing equipment of attaching light shield, at least including spectroscope and reflector for to desktop reading and writing area show the magnified telephoto, still include: place in the end of spectroscope's light shield, the back of light shield is provided with auxiliary lighting system, the auxiliary lighting system includes at least two of first auxiliary light supplementing lamp, second auxiliary light supplementing lamp and hand shadow elimination light supplementing lamp, for to the different area of desktop reading and writing area light supplementing, light shield with the frame of spectroscope respectively correspond to be provided with the electrification interface, to make auxiliary lighting system with the circuit system of desktop telephoto reading and writing equipment conduction. This desktop telephoto reading and writing equipment, through increasing auxiliary lighting system in the light shield below spectroscope, and to the light projection position of multiple light supplementing lamps accurate control, realize the partition illumination, can improve the desktop illumination uniformity, and further realize the purpose of eliminating hand shadow.

Description

Technical Field

[0001] This utility model relates to a desktop remote image reading and writing device with an attached light shield. Background Technology

[0002] The problem of myopia among teenagers is becoming increasingly serious. The root cause is that teenagers' eyes spend most of their time focusing on close-up objects, causing their eyeballs to gradually lengthen in order to adapt to near-field imaging. To address this issue, various myopia prevention and control products have emerged on the market. Among them, desktop distance vision reading and writing devices use optical means to extend the near-field reading and writing to a distant imaging distance, and are widely used in the field of myopia prevention and control among teenagers.

[0003] To meet the demands of a large imaging range for desktop writing and a small size for reading and writing devices, foldable desktop far-image reading and writing devices have emerged. However, due to the foldable structure of these devices, the design of the lighting system presents certain challenges. As the imaging range increases, the uniformity of illumination is increasingly affected, making it more difficult to design a lighting system with high illumination uniformity.

[0004] In addition, due to the lighting arrangement of desktop far-image reading and writing devices, current reading and writing desk products have local shadows on the book caused by the user blocking the light with their hand when writing, resulting in excessively high contrast of the screen and causing eye fatigue. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a desktop remote image reading and writing device with an attached light shield, which provides supplementary lighting to the desktop reading and writing area through the supplementary light in the light shield.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] A desktop image reading and writing device with an attached light shield, comprising at least a beam splitter and a reflector, for presenting a magnified image of the desktop reading and writing area;

[0008] It also includes: a light shield placed at the end of the beam splitter, and an auxiliary lighting system provided on the back of the light shield. The auxiliary lighting system includes at least two of a first auxiliary fill light, a second auxiliary fill light, and a hand shadow removal fill light, for providing supplementary lighting to different areas of the desktop reading and writing area.

[0009] The frame of the light-shielding plate and the beam splitter are respectively provided with power-conducting interfaces to enable the circuit system of the auxiliary lighting system and the desktop image reading and writing device to be connected.

[0010] Preferably, the first auxiliary fill light is located on the back of the light shield, parallel to the beam splitter, and is used to provide supplementary lighting for the non-writing area near the user in the desktop reading and writing area.

[0011] Preferably, the first auxiliary fill light includes multiple fill light modules arranged in a staggered manner and providing regional illumination, and each fill light module consists of multiple light sources.

[0012] Preferably, in the supplementary lighting module, the light source furthest from the center of the light shield is closer to the lower edge of the beam splitter and further away from the plane where the light shield is located; and the pitch angle and azimuth angle of the multiple light sources are different.

[0013] Preferably, the second auxiliary fill light is located in the middle of the back of the light shield and is inclined relative to the light shield, and is used to provide fill light to the central area of ​​the desktop reading and writing area away from the user.

[0014] Preferably, the pitch angle of the second auxiliary fill light relative to the vertical direction of the table satisfies 24° < α < 54°.

[0015] Preferably, the hand shadow removal fill light is located in the middle of the back of the light shield. When in use, the hand shadow removal fill light emits light from the side toward the desktop writing area to provide fill light to the desktop writing area on the inside of the hand. The desktop writing area is located in the desktop reading and writing area on the side closer to the user.

[0016] Preferably, the hand shadow fill light can rotate left and right to adjust the angle of light emission to the left or right.

[0017] Preferably, the hand shadow fill light has a tilt angle of 35° < α < 55° relative to the tabletop and an azimuth angle of -25° < β < 25° relative to the beam splitter.

[0018] Preferably, the hand shadow fill light is an illumination array composed of multiple light sources.

[0019] Preferably, the second auxiliary fill light is installed at a higher height than the first auxiliary fill light;

[0020] The height of the shadow removal fill light is higher than the height of the first auxiliary fill light and the second auxiliary fill light.

[0021] Preferably, the desktop image reading and writing device further includes main supplementary lights disposed on both sides of the back of the beam splitter, used to project light onto the desktop reading and writing area when the beam splitter is tilted.

[0022] The desktop image reading and writing device with attached light shield provided by this utility model achieves zoned lighting by adding multiple sets of supplementary lights in the light shield below the beam splitter and precisely controlling the projection position of the lights, thereby improving the uniformity of desktop illumination and further eliminating shadows caused by hands. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the optical path of a desktop image reader / writer.

[0024] Figure 2 This is a structural diagram of a foldable desktop remote image reading and writing device in the prior art;

[0025] Figure 3 This is a diagram illustrating the shadow cast by a hand blocking light during the use of a desktop far-view reading and writing device;

[0026] Figures 4(a) and 4(b) are schematic diagrams of the structure of the first type of supplementary light in the lighting system;

[0027] Figures 5(a), 5(b), and 5(c) are schematic diagrams of the structure of the second type of supplementary light in the lighting system;

[0028] Figures 6(a) and 6(b) are schematic diagrams of the structure of the third type of supplementary light in the lighting system;

[0029] Figures 7(a) and 7(b) are schematic diagrams of the structure of the fourth type of supplementary light in the lighting system;

[0030] Figures 8(a) and 8(b) are schematic diagrams of the structure of the fifth type of supplementary light in the lighting system;

[0031] Figure 9(a) shows the illuminance distribution when the auxiliary fill light is not turned on;

[0032] Figure 9(b) shows the illuminance distribution effect when the auxiliary fill light is turned on;

[0033] Figure 10 This is a hardware schematic diagram of the foldable desktop image reading and writing device provided by this utility model;

[0034] Figure 11 This is a schematic diagram of the structure of the foldable desktop remote image reading and writing device provided by this utility model;

[0035] Figure 12 This is a schematic diagram of the lighting system of the foldable desktop image reading and writing device provided by this utility model;

[0036] Figure 13 This is a schematic diagram of the overall structure of a light shield with multiple supplementary lights installed on it.

[0037] Figure 14(a) is a schematic diagram of the illumination optical path YZ direction of the folding reading and writing station in Embodiment 1;

[0038] Figure 14(b) is a schematic diagram of the illumination optical path in the XY direction of the folding reading and writing station in Embodiment 1;

[0039] Figures 14(c) and 14(d) are schematic diagrams showing the orientation of the main supplementary lights located in the side frames on the back of the beam splitter.

[0040] Figure 14(e) is a 3D schematic diagram of the lighting optical path of the folding reading and writing station in Embodiment 1;

[0041] Figure 15(a) is a schematic diagram of the illumination optical path YZ direction of the folding reading and writing station in Embodiment 2;

[0042] Figure 15(b) is a schematic diagram of the illumination optical path in the XY direction of the folding reading and writing station in Embodiment 2;

[0043] Figures 15(c) and 15(d) are schematic diagrams of the stepped light strips set in the side frames on the back of the beam splitter;

[0044] Figure 15(e) is a 3D schematic diagram of the lighting optical path of the folding reading and writing station in Embodiment 2;

[0045] Figure 16(a) is a schematic diagram of the illumination optical path in the XY direction of the folding reading and writing station in Embodiment 3;

[0046] Figure 16(b) is a schematic diagram of the illumination optical path YZ direction of the folding reading and writing station in Embodiment 3;

[0047] Figures 16(c) and 16(d) are schematic diagrams of the hand shadow removal fill light in Example 3;

[0048] Figure 16(e) is a 3D schematic diagram of the illumination light path of the shadow-eliminating lamp in Example 3;

[0049] Figure 17(a) is a schematic diagram of the illumination optical path in the XY direction of the folding reading and writing station in Embodiment 4;

[0050] Figure 17(b) is a schematic diagram of the illumination optical path YZ direction of the folding reading and writing station in Embodiment 4;

[0051] Figures 17(c) and 17(d) are schematic diagrams of the hand shadow removal fill light in Example 4;

[0052] Figure 17(e) is a 3D schematic diagram of the lighting optical path of the folding reader in Example 4. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0055] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0056] like Figure 1 and Figure 2 As shown, the desktop remote image reading and writing device (also known as a reading and writing table) provided by this utility model is a device that uses optical means to extend the near-distance reading and writing on the desktop to a distant image. It includes a Birdbath-type optical path composed of at least a beam splitter 103 and a reflector 104, which is used to present a magnified remote image of the desktop reading and writing area 100. The size of the desktop reading and writing area 100 is determined by the size of the reflector 104 and the beam splitter 103. Currently, some products can achieve a desktop reading and writing area the size of two A4 or A3 sheets of paper.

[0057] Specifically, the desktop far-viewing and writing device provided by this utility model includes a coaxial optical path composed of a planar beam splitter 103 and a concave reflector 104. The concave reflector 104 reflects light rays from the desktop (e.g., light reflected from objects placed on the desktop and light emitted from a monitor placed on the desktop), achieving image magnification and projection. The planar beam splitter 103 folds the optical path, thus achieving magnified and projected desktop writing in a compact device, allowing for extended viewing at a distance. Furthermore, a folding structure is provided to reduce the size of the desktop far-viewing and writing device when not in use.

[0058] This utility model provides an exemplary structure for a foldable desktop image reading and writing device, such as... Figure 2As shown, it includes: a bracket 101, a back plate 102, a plane beam splitter 103, a concave mirror 104, a cover plate 105, and a damping pivot. The bracket 101 is set on a table, the back plate 102 is connected to the bracket 101, and the distance between the back plate 102 and the table can be adjusted. The back plate 102, the plane beam splitter 103, and the cover plate 105 are rotatably connected by the damping pivot. The plane beam splitter 103 and the cover plate 105 can be rotated to a folded state parallel to the back plate 102.

[0059] In this foldable desktop image reading and writing device, one end of the cover plate 105, one end of the back plate 102, and the top end of the planar beam splitter 103 are respectively fixed to the cover plate fixing frame, the back plate fixing frame, and the planar beam splitter fixing frame of the damping shaft; the concave reflector 104 is fixedly mounted on the cover plate 105 or the back plate 102, and the concave reflector 104 is held in a horizontal or vertical position during use; Figure 1 In this embodiment, the concave reflector 104 is fixedly disposed on the lower surface of the cover plate 105. In other embodiments, the concave reflector can also be fixedly disposed on the surface of the back plate 102 facing the exit pupil. The concave reflector can be fixedly disposed on either the cover plate 105 or the back plate 102 to achieve distant image imaging for desktop writing. The planar beam splitter 103 is tilted between the cover plate 105 and the back plate 102 during use. Light reflected from the desktop and objects placed on it is directed from below to the planar beam splitter 103 and then split. The light is then directed to the concave reflector 104, reflected by the concave reflector 104, and split again by the planar beam splitter 103 before being directed towards the exit pupil, forming a distant image at a distance of at least 3 meters.

[0060] In this desktop far-viewing reading and writing device, a planar beam splitter 103 is required to fold the optical path. However, the planar beam splitter 103 causes light loss and reduces luminous efficiency. To avoid affecting the brightness entering the eye, an illumination system (generally a full-spectrum light source) is often installed in the desktop far-viewing reading and writing device. The illumination system can illuminate the desktop, increase the reflected illuminance, and thus increase the brightness entering the eye after passing through the beam splitter. In a folding desktop far-viewing reading and writing device, the illumination system typically includes supplementary lights (e.g., supplementary lights on both sides of the back of the beam splitter or supplementary lights in the lower frame of the beam splitter) installed in the frame 106 of the beam splitter 103, or supplementary lights installed in the lower frame of the back panel 102 to project light onto the desktop reading and writing area when the beam splitter is tilted.

[0061] However, as Figure 3As shown, because the lighting source is only placed on one or both sides of the desktop image reading and writing device, the uniformity of desktop illumination is affected as the desktop reading and writing area increases. Moreover, when current reading and writing products are used in writing scenarios, the user's hand will block the light shining on the desktop, thus creating shadows around the hand. In particular, the shadow on the inside of the hand causes excessively high local contrast when the user views the image, which can easily lead to eye fatigue and other adverse consequences, and also significantly affects the user's writing experience. Here, the writing area where the user's hand is located is defined as the desktop writing area 100A. Considering the writing scenario and writing habits, the desktop writing area 100A is usually concentrated in the left or right area of ​​the desktop reading and writing area 100 closer to the user (depending on whether it is left-handed or right-handed writing). The position of the desktop writing area 100A is relatively fixed, and the area of ​​the desktop writing area 100A is much smaller than the area of ​​the desktop reading and writing area 100.

[0062] To eliminate shadows caused by hands in distant images, modifications were made to the foldable desktop distant image reader / writer, adding a hand-shadow elimination fill light 111, such as... Figure 3 As shown, the hand shadow fill light 111 is positioned below the tilted beam splitter, and can be placed at the lower edge of the beam splitter or even lower. In use, it emits light from the side onto the writing area 110A on the desktop to provide supplemental lighting for the writing area on the inside of the hand. Figure 3 The illumination area of ​​the hand shadow removal fill light 111 is shown by light rays 111A, 111B and 111C. It can be seen that the illumination area of ​​the hand shadow removal fill light can cover the writing area on the inside of the hand and brighten the area.

[0063] According to the embodiments provided by this utility model, the shadow-eliminating fill light 111 can be a light source that is tilted and positioned below the beam splitter, facing the writing area 110A on the desktop. Alternatively, it can be a light source that is tilted and positioned below the beam splitter but not facing the writing area 110A on the desktop, only providing light to the writing area 110A through a portion of its light. Therefore, the position of the shadow-eliminating fill light 111 is not fixed. For example, the shadow-eliminating fill light 111 can be implemented by an independently positioned fill light in the middle below the beam splitter. By rotating the fill light left and right (i.e., adjusting the azimuth angle β of the fill light relative to the beam splitter), local illumination of different writing areas on the desktop can be achieved to achieve the purpose of eliminating shadows. Alternatively, the shadow-eliminating fill light 111 can also be implemented by combining a first auxiliary fill light positioned on the left and / or right side below the beam splitter with an independently positioned fill light. This first auxiliary fill light illuminates the non-writing areas of the desktop reading and writing area on one hand, and provides supplementary light to the writing area on the desktop through a portion of its light on the other hand. By adjusting the light intensity ratio of each fill light source, the shadow-eliminating effect can also be achieved.

[0064] To prevent stray light from abnormal optical paths from entering the user's field of vision and to prevent the user from directly viewing objects placed on the desktop, foldable desktop far-viewing reading and writing devices are often equipped with a light shield 107 (also called a privacy screen) located at the end of the beam splitter 103. By setting various types of supplementary lights on the light shield 107 below the beam splitter 103, an auxiliary lighting system is formed, which can improve the lighting of the desktop reading and writing area and further eliminate shadows caused by hands. Among them, the hand shadow elimination supplementary light adopts the same laying angle as the beam splitter to ensure the consistency of light distribution. Preferably, the pitch angle of the hand shadow elimination supplementary light is adjustable, thereby optimizing the light direction to the inside of the hand and effectively reducing hand shadows. In addition, the structure of other supplementary lights can be designed in various variations, such as a two-section raised type, an arc raised type, or an optimized design specifically for reducing single hand shadows. These designs are all aimed at precisely guiding the light to the inside of the hand to minimize shadow interference. This application provides structural schematic diagrams of five supplementary light strips, further illustrating the specific details of these embodiments. This solution can not only effectively eliminate shadows caused by hands, but also significantly improve the illumination uniformity of imaging equipment.

[0065] According to the embodiments provided by this utility model, as shown in Figures 4(a) and 4(b), the auxiliary lighting system of the foldable desktop far-view reading and writing device includes a plurality of first auxiliary fill lights disposed on a light shield 107 below the beam splitter 103. The central rays of the plurality of first auxiliary fill lights are perpendicular to the beam splitter 103, and their arrangement planes are parallel to the beam splitter 103, used to provide supplementary lighting for the non-writing area near the user in the desktop reading and writing area. The plurality of first auxiliary fill lights include first auxiliary fill lights 112 symmetrically located on both sides and a first auxiliary fill light 113 located in the middle. The three first auxiliary fill lights can be arranged side by side in a straight line, or they can be arranged in a staggered manner as shown in the figure to reduce the impact on the structural strength of the light shield 107.

[0066] According to the embodiments provided by this utility model, such as Figure 5(a) , 5(b) As shown in Figure 5(c), the auxiliary lighting system of the foldable desktop far-view reading and writing device may include a second auxiliary fill light 114 disposed in the middle of the light shield 107 below the beam splitter 103. The second auxiliary fill light 114 has a pitch angle of 24° < α < 54° relative to the vertical direction of the desktop, and is used to provide supplementary lighting for the non-writing area near the support in the desktop reading and writing area. As shown in Figure 5(c), by providing a light shielding structure on the fill light box, only the light that meets the above pitch angle can be emitted, while preventing other light from leaking and causing stray light.

[0067] According to the embodiments provided by this utility model, such as Figure 6(a) and 6(b)As shown, the auxiliary lighting system of this foldable desktop far-viewing reading and writing device may include third auxiliary fill lights 115 on both sides of the light shield 107 below the beam splitter 103. These third auxiliary fill lights 115 are an optimized design of the first auxiliary fill lights located on both sides in Figure 4(a). The two rows of third auxiliary fill lights 115 are symmetrically arranged, enabling supplemental lighting to the non-use area of ​​the desktop reading and writing area closer to the user. Combined with the hand shadow elimination fill light, it can achieve the effect of eliminating hand shadows. The multiple light sources in this fill light are distributed on different planes, with different distances from the lower edge of the beam splitter, different distances from the plane where the beam splitter is located, and different pitch and azimuth angles. As shown in Figures 6(a) and 6(b), the light source near the side (i.e. away from the center of the beam splitter) in the multiple light sources is closer to the lower edge of the beam splitter, and the light source near the side in the multiple light sources is further away from the plane where the beam splitter is located. The LEDs on both sides are in an "inward V" shape and tilted inward and to the left and right at a certain angle, with an azimuth angle of 5° < β < 20°.

[0068] According to the embodiments provided by this utility model, such as Figure 7(a) and 7(b) As shown, the auxiliary lighting system of this foldable desktop far-viewing reading and writing device may include a fourth auxiliary fill light 116 located in the middle of the light shield 107 below the beam splitter 103. This fourth auxiliary fill light 116 is an optimized design of the first auxiliary fill light located in the middle of Figure 4(a). It can provide supplementary lighting to the non-use area of ​​the desktop reading and writing area near the user, and combined with a hand shadow elimination fill light, it can achieve the effect of eliminating hand shadows. The multiple light sources in this fill light are distributed on different planes, with different distances from the lower edge of the beam splitter, and different distances from the plane where the beam splitter is located. The pitch and azimuth angles of the multiple light sources are also different. As shown in Figures 7(a) and 7(b), the light sources near the sides of the multiple light sources are closer to the lower edge of the beam splitter, and the light sources near the sides of the multiple light sources are further away from the plane where the beam splitter is located. The overall light source is three-dimensional arc-shaped. The LEDs on both sides of the fourth auxiliary fill light are in an "inward V" shape and tilted inward and to the left and right at a certain angle. In addition, the pitch angle is tilted, and the azimuth angle of the central light strip relative to the light shield is 2° < β < 12°.

[0069] According to the embodiments provided by this utility model, such as Figure 8(a) and 8(b)As shown, the auxiliary lighting system of this foldable desktop far-viewing reading and writing device includes an independently installed hand shadow elimination fill light 117. This hand shadow elimination fill light is located in the middle of the light shield below the beam splitter, and can be rotated up, down, left, and right to adjust the pitch angle and azimuth angle. The pitch angle relative to the desktop is 35° < α < 55°; the azimuth angle relative to the light shield is -25° < β < 25°, so as to illuminate the writing areas on the left and right sides of the desktop respectively, thereby eliminating the shadow caused by the hand in the far-viewing image when combined with other light sources.

[0070] Figures 9(a) and 9(b) show the desktop illuminance distribution when the main fill light located on the back of the beam splitter 103 is used alone, and the desktop illuminance distribution when the main fill light located on the back of the beam splitter 103 is used simultaneously, along with the first auxiliary fill light and the second auxiliary fill light. It can be seen that the first auxiliary fill light and the second auxiliary fill light can provide supplementary lighting to the middle part of the desktop reading and writing area near the user (i.e., the front side) and the rear side, thereby improving the overall lighting uniformity.

[0071] In non-writing mode, only the main fill light, the first auxiliary fill light, and the second auxiliary fill light located on the back of the beam splitter 103 can be turned on to illuminate the desktop, achieving good uniformity of illumination. In writing mode, the shadow-eliminating fill light can be turned on simultaneously, in combination with other fill lights (including the main fill light, the first auxiliary fill light, and the second auxiliary fill light located on the back of the beam splitter 103), to achieve a shadow-eliminating effect while illuminating the desktop. In flying writing mode, the shadow-eliminating fill light can be turned off separately.

[0072] According to the embodiments provided in this utility model, referring to Figure 10 and Figure 11As shown, a main board is installed inside the back panel 102. The main board is connected to the Hall switch, the distance sensor, and all the auxiliary lights (the main auxiliary lights located on both sides of the back of the beam splitter, and the first auxiliary auxiliary light, the second auxiliary auxiliary light, and the hand shadow removal light located below the beam splitter) via wires. It also receives the switching signals from the distance sensor and the Hall switch to control the switching of all the auxiliary lights. In this embodiment, the main board can use the CH32V203C8T6 low-power microcontroller, which has low power consumption, built-in 20KB SRAM and 64KB Flash storage space, and provides dual USB 2.0 full-speed host / device interfaces, one CAN interface, four UARTs, two IICs, and two SPI interfaces. The Hall switch can use the A3144EUA-T type unipolar Hall effect switch sensor, with a wide operating voltage range of 4.5~24V DC, open collector digital output, and low response time. In this embodiment, the distance sensor operates at 5–24V DC, with a sensing range of at least 5–20cm. The main board receives the switch signal from the distance sensor and controls the on / off state of the supplementary lighting. See also Figure 10 The desktop image reader also includes a keypad, which is connected to the motherboard via wires. The motherboard receives the switch signals from the keypad to control the on / off state of all the fill lights. After the fill lights automatically turn on, the user can manually turn them off using the keypad if they are not needed.

[0073] According to the embodiments provided by this utility model, such as Figure 11 , Figure 12 and Figure 13 As shown, the lighting system of this foldable desktop far-viewing reading and writing device includes main fill lights 120 located on the back of the side frames 106 of the beam splitter 103, and first auxiliary fill lights 123 and 124, second auxiliary fill lights 122, and a hand shadow removal fill light 121 located on the back of the light shield 107 below the beam splitter 103. Power interfaces 108 and 109 (e.g., POGOPIN connectors) are correspondingly provided at the contact points between the beam splitter 103 and the light shield 107, enabling the multiple fill lights on the light shield 107 to conduct electricity to the main board. Unlike traditional light shields, which are typically pure structural components made of plastic or sheet metal, the light shield provided in this application achieves an integrated optical, mechanical, and electrical design by integrating fill light strips. The manufacturing process of this light shield can include hot pressing, sheet metal processing, injection molding, or compression molding, to adapt to different production requirements and structural strengths.

[0074] For power supply, this solution preferably draws power from the lower edge of the beam splitter frame via a POGOPIN connector or other equivalent method. A safe voltage is used to ensure safety during use. Preferably, POGOPIN connectors are arranged on both sides of the frame, or a multi-pin POGOPIN connector is arranged on one side. In addition to power supply, this connection scheme can also be used for contact or continuity determination. When the connectors on both sides are not fully connected, the system automatically cuts off the power, thus providing maximum safety for users (especially children).

[0075] Furthermore, the hand shadow removal fill light can be controlled independently, for example, via a touchscreen interface or physical buttons. When the shadow removal function is activated, the brightness of the hand shadow removal fill light and other light sources can adaptively adjust according to usage. Specifically, the system can automatically set the corresponding illuminance of the hand shadow removal fill light based on preset fill light illuminance values. Alternatively, the system can synchronously calculate the ideal illuminance for each part after the shadow removal function is activated based on historical illuminance data, for example, by reducing the illuminance of the original light strip to achieve overall lighting balance.

[0076] like Figure 12 and Figure 13 As shown, in the lighting system of this foldable desktop far-viewing reading and writing device, the first auxiliary fill lights (123, 124A, and 124B) are located below the beam splitter 103. Multiple first auxiliary fill lights are arranged parallel to the beam splitter and are used to provide supplementary lighting to the non-writing area near the user in the desktop reading and writing area. The second auxiliary fill light 122 is located below the beam splitter and is tilted relative to it. The position of the second auxiliary fill light 122 is higher than that of the first auxiliary fill light 123 located in the middle. The second auxiliary fill light is used to provide supplementary lighting to the central area of ​​the desktop reading and writing area away from the user. Its tilt angle relative to the desktop is 48.5° < α < 63.5°. The shadow-eliminating fill light 121 is located in the center below the beam splitter and can rotate up, down, left, and right. Its tilt angle relative to the desktop is 35° < α < 55°, and its azimuth angle relative to the light shield is -25° < β < 25°. The shadow-eliminating fill light 121 is positioned higher than the first and second auxiliary fill lights. Through the reasonable arrangement of these fill lights, more uniform illumination can be achieved over a larger desktop reading and writing area, while simultaneously eliminating shadows.

[0077] The following describes several specific embodiments of the lighting system.

[0078] Example 1:

[0079] exist Figures 14(a) to 14(e)In the illustrated embodiment, the lighting system of the folding reading / writing station based on an LED spatial array consists of the following parts: a beam splitter structure 1, a light shield structure 3, a single-row LED array module 8, and a double-row LED array module 9. Specifically, a group of continuously arranged LED light sources constitutes single-row LED array modules 8A, 8B, and 8C, respectively arranged on the left, middle, and right sides of the back of the light shield, forming the first auxiliary fill light. Two groups of parallel arranged LED light sources constitute double-row LED array modules 9A and 9B, respectively arranged in the grooves on the back of the side frames of the beam splitter 1, serving as the main fill light.

[0080] As shown in Figures 14(c) and 14(d), the LEDs in the dual-row LED array module 9 have a certain tilt angle along the X-axis in the YZ plane, which satisfies -120° < α < -140°, and a certain tilt angle along the Z-axis in the XY plane, which satisfies 10° < β < 20°, thereby enabling them to tilt and provide light to the desktop reading and writing area.

[0081] The structures of the single-row LED array modules 8A, 8B and 8C are shown in Figures 4(a) and 4(b), respectively. They are set on the back of the light shield below the beam splitter and are used to provide light to the desktop reading and writing area near the user.

[0082] The specific lighting principle of this embodiment is shown in Figure 14(e). The dual-row LED array modules 9 (9A and 9B) emit light rays 4 (4A and 4B) and 5 (5A and 5B) respectively, illuminating the rear side (away from the user side) of the desktop reading / writing area 2, forming lighting areas A and B. Multiple single-row LED array modules 8 (8A, 8B, and 8C) emit light rays 6 and 7 (6, 7A, 7B) respectively, illuminating the front side (closer to the user side) of the desktop reading / writing area 2, forming lighting area C. The above lighting achieves a uniform distribution of overall illuminance through regional energy superposition.

[0083] Example 2:

[0084] exist Figures 15(a) to 15(e) In the illustrated embodiment, the lighting system of the folding reading / writing station based on an LED spatial array consists of the following components: a beam splitter structure 1, a light shield structure 3, a single-row LED array module 8, a double-row LED array module 12, and a supplementary light module 13. Specifically, a group of continuously arranged LED light sources constitutes single-row LED array modules 8A, 8B, and 8C, respectively arranged on the left, middle, and right sides of the light shield, forming the first auxiliary supplementary light; another group of continuously arranged LED light sources constitutes supplementary light module 13, arranged in the middle of the back of the light shield below the beam splitter, forming the second auxiliary supplementary light; two groups of parallel arranged LED light sources constitute double-row LED stepped array modules 12A and 12B, respectively arranged in the grooves on the back of the side frames of the beam splitter 1, serving as the main supplementary light.

[0085] As shown in Figures 15(c) and 15(d), the LEDs in the double-row LED stepped array module 12 are arranged in the YZ plane along the Z-axis at 90° intervals, that is, multiple light sources are arranged on the same-oriented ridge surface in the folded stepped ridge surface. The beam splitter structure 1 is rotated to tilt the beam splitter, so that each light source in the double-row LED stepped array module 12 is facing the desktop reading and writing area. The LEDs in the double-row LED stepped array module 12 are arranged horizontally along the X-axis in the XY plane.

[0086] In this embodiment, the structures of the single-row LED array modules 8A, 8B, and 8C are shown in Figures 4(a) and 4(b), respectively, and are disposed on the back of the light-shielding plate below the beam splitter, for providing light to the desktop reading and writing area near the user. The structure of the supplementary light module 13 is shown in Figures 5(a), 5(b), and 5(c), respectively, and is disposed on the back of the light-shielding plate below the beam splitter, and is located above the single-row LED array module 8A located in the middle. Furthermore, under the constraint of the housing, the supplementary light module 13 provides light to the middle part of the desktop reading and writing area away from the user at a predetermined angle.

[0087] The specific lighting principle of this embodiment is shown in Figure 15(e). The double-row LED stepped array module 12 (12A and 12B) emits light rays 4 (4A and 4B) to illuminate the rear area of ​​the desktop reading and writing area 2, forming lighting areas A and B. The single-row LED array module 8 (8A, 8B and 8C) emits light rays 6 and 7 (6, 7A and 7B) to illuminate the front area of ​​the desktop reading and writing area 2, forming lighting areas C, D and E respectively. The supplementary light module 13 emits light rays 11 to illuminate the middle area of ​​the rear side of the desktop reading and writing area 2, forming lighting area F. The above lighting achieves a uniform distribution of overall illuminance through regional superposition of energy.

[0088] Example 3:

[0089] exist Figures 16(a) to 16(e) In the illustrated embodiment, the lighting system of the folding reading / writing station based on an LED spatial array comprises the following components: a beam splitter structure 1, a light shield structure 3, a single-row LED array module 8, a double-row LED array module 9 or 12, a fill light module 13, and a hand shadow removal fill light module 14. The hand shadow removal fill light module 14 is located on the back of the light shield below the beam splitter and can rotate left and right; the height of the hand shadow removal fill light module 14 is higher than that of the single-row LED array module 8 (corresponding to the first auxiliary fill light) and the fill light module 13 (corresponding to the second auxiliary fill light).

[0090] As shown in Figures 16(c) and 16(d), the hand shadow removal fill light module 14 is a 4×4 LED array arranged in a rectangular light slot 14A. The size of a single LED chip 14B is 5.1×5.1mm, and the distance between two adjacent chips is 6mm. The hand shadow removal fill light module 14 is rotated left and right along the Y-axis in the XY plane at a certain tilt angle, which satisfies -25°<β<25°.

[0091] The specific lighting principle of this embodiment is shown in Figure 16(e). The shadow-eliminating fill light module 14 can emit light (19, 20) to the left or right of the desktop reading and writing area (corresponding to the desktop writing area) by rotating at a certain angle, forming illumination areas A and A' on the desktop reading and writing area. When the user's hand blocks other fixed light sources (single-row LED array module, double-row LED array module, LED fill light module) and creates a shadow, the illuminance of the shadowed area is supplemented by adjusting the angle of the shadow-eliminating fill light module 14. Only the illumination area of ​​the shadow-eliminating fill light is illustrated here; the lighting principles and illumination areas of other fill lights are the same as in other embodiments and will not be described again.

[0092] Example 4:

[0093] exist Figures 17(a) to 17(e) In the illustrated embodiment, the lighting system of the folding reading / writing station based on an LED spatial array comprises the following components: a beam splitter structure 1, a light shield structure 3, a single-row LED array module 8, a double-row LED array module 9 or 12, a fill light module 13, and a hand shadow removal fill light module 17. The hand shadow removal fill light module 17 is located on the back of the light shield below the beam splitter and can rotate left and right; the height of the hand shadow removal fill light module 17 is higher than that of the single-row LED array module 8 (corresponding to the first auxiliary fill light) and the fill light module 13 (corresponding to the second auxiliary fill light).

[0094] As shown in Figure 17(c), the hand shadow removal fill light module 17 is an LED array arranged within the reflector cup 17A. Each LED chip 17B measures 5.1 × 5.1 mm, and seven LED chips are arranged at the corners and center of a regular hexagon, forming a 52 mm × 48 mm shadow removal light. Furthermore, as shown in Figure 17(d), the hand shadow removal fill light module 17 is rotated vertically along the Y-axis in the XY plane at a certain tilt angle, which satisfies -25° < β < 25°.

[0095] The specific lighting principle of this embodiment is shown in Figure 17(e). The shadow-eliminating fill light module 17 can emit light (21, 22) to the left or right side of the desktop reading and writing area (corresponding to the desktop writing area) by rotating at a certain angle, forming illumination areas A and A' on the desktop reading and writing area. When the user's hand blocks other fixed light sources (single-row LED array module, double-row LED array module, LED fill light module) and produces a shadow, the illuminance of the shadowed area is supplemented by adjusting the angle of the shadow-eliminating fill light. Only the illumination area of ​​the shadow-eliminating fill light is illustrated here; the lighting principles and illumination areas of other fill lights are the same as in other embodiments and will not be described again.

[0096] The above provides a detailed description of the desktop image reading and writing device with an attached light-shielding plate provided by this utility model. Any obvious modifications made by those skilled in the art without departing from the essential content of this utility model will constitute an infringement of the patent rights of this utility model and will incur corresponding legal liability.

Claims

1. A desktop image reading and writing device with an attached light-shielding plate, the desktop image reading and writing device comprising at least a beam splitter and a reflector for presenting a magnified image of the desktop reading and writing area, characterized in that... Also includes: A light shield is placed at the end of the beam splitter, and an auxiliary lighting system is provided on the back of the light shield. The auxiliary lighting system includes at least two of a first auxiliary fill light, a second auxiliary fill light, and a hand shadow removal fill light, which are used to provide supplementary lighting for different areas of the desktop reading and writing area. The frame of the light-shielding plate and the beam splitter are respectively provided with power-conducting interfaces to enable the circuit system of the auxiliary lighting system and the desktop image reading and writing device to be connected.

2. The desktop image reading and writing device as described in claim 1, characterized in that: The first auxiliary fill light is located on the back of the light shield, parallel to the beam splitter, and is used to provide supplementary lighting for the non-writing area near the user in the desktop reading and writing area.

3. The desktop image reading and writing device as described in claim 2, characterized in that: The first auxiliary fill light includes multiple fill light modules that are staggered and illuminate different areas, and each fill light module consists of multiple light sources.

4. The desktop image reading and writing device as described in claim 3, characterized in that: In the supplementary lighting module, the light source that is far from the center of the light shield is closer to the lower edge of the beam splitter and further away from the plane where the light shield is located; and the pitch angle and azimuth angle of the multiple light sources are different.

5. The desktop image reading and writing device as described in claim 1, characterized in that: The second auxiliary fill light is located in the middle of the back of the light shield and is inclined relative to the light shield. It is used to provide fill light to the central area of ​​the desktop reading and writing area on the side away from the user.

6. The desktop image reading and writing device as described in claim 5, characterized in that: The tilt angle of the second auxiliary fill light relative to the vertical direction of the desktop satisfies 24° < α < 54°.

7. The desktop image reading and writing device as described in claim 1, characterized in that: The hand shadow removal fill light is located in the middle of the back of the light shield. When in use, the hand shadow removal fill light emits light from the side onto the desktop writing area to provide supplemental lighting for the desktop writing area on the inside of the hand. The desktop writing area is located on the side of the desktop reading and writing area closer to the user.

8. The desktop image reading and writing device as described in claim 7, characterized in that: The hand shadow fill light can rotate left and right to adjust the angle of light emission to the left or right.

9. The desktop image reading and writing device as described in claim 7, characterized in that: The shadow-removing fill light has a tilt angle of 35° < α < 55° relative to the tabletop and an azimuth angle of -25° < β < 25° relative to the beam splitter.

10. The desktop image reading and writing device as described in claim 7, characterized in that: The hand shadow fill light is an illumination array composed of multiple light sources.

11. The desktop image reading and writing device as described in claim 1, characterized in that: The second auxiliary fill light is installed at a higher height than the first auxiliary fill light; The height of the shadow removal fill light is higher than the height of the first auxiliary fill light and the second auxiliary fill light.

12. The desktop image reading and writing device as described in claim 1, characterized in that: It also includes supplementary lights on both sides of the back of the beam splitter, which are used to project light onto the desktop reading and writing area when the beam splitter is tilted.

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