Smart desktop study lamp based on DLP projection technology

Abstract

This invention belongs to the field of intelligent learning tools, proposing an intelligent desktop learning lamp based on DLP projection technology. It includes a lamp holder, lamp head, power cord, light source module, DLP engine module, image acquisition module, sensing module, and main control unit. The main control unit processes the image information acquired by the image acquisition module, identifies the target work area on the desktop, generates corresponding mask image data, and sends the mask image data to the control circuit of the DLP projection engine module. The DLP projection engine module receives the mask image data and modulates the light emitted by the light source module, projecting the modulated light onto the desktop to form an illumination spot. This invention achieves highly precise lighting, effectively eliminates glare, significantly saves energy, intelligently adapts, improves focus, protects privacy and does not disturb others, provides healthy light quality, and has high space utilization, making it well-suited for use on intelligent learning desks.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent learning tools, and in particular relates to an intelligent desktop learning lamp based on DLP projection technology. Background Technology

[0002] Desktop study lamps are lighting devices specifically designed for studying, and are generally used with study desks that can accommodate them.

[0003] Traditional study lamps have several problems in practical use. First, they don't match lighting needs. Traditional desk lamps primarily provide large-area uniform illumination, but users usually need area lighting rather than uniform illumination. They only need to light specific work areas on the desk, such as books, drawings, and keyboards. Uniform illumination leads to unnecessary glare, energy waste, and ambient light interference, affecting concentration and others' rest. Second, glare can pose health hazards. Direct light shining into the user's eyes or reflected glare from smooth pages / screens can easily cause eye strain, and prolonged exposure can lead to blurred vision and glare. Third, they lack dynamic adjustment. When items on the desk, such as books, hands, or stationery, move or the user's posture changes, traditional desk lamps cannot automatically adjust the lighting area and intensity, requiring frequent manual adjustments. Fourth, they are functionally limited. Most study lamps still only provide basic lighting and lack intelligent interactive capabilities that are deeply integrated with the learning / work environment. Fifth, there are issues with light quality. Some light sources may have problems such as flickering and insufficient color rendering, which can affect eye health with long-term use.

[0004] While some existing learning lamps have developed some practical functions, they also have some unavoidable problems, as follows: Adjustable angle / brightness desk lamp: partially solves the problem of manual adjustment, but cannot precisely control the shape and boundaries of the illuminated area, and cannot avoid shadows caused by the movement of objects or the need for readjustment.

[0005] Zoned dimming LED light panels achieve zoned lighting through multiple independently controlled LED units. However, the disadvantages are that the zoned accuracy is limited by the physical size of the LED units, making it difficult to achieve high-precision, arbitrarily shaped lighting areas; the edge transitions are harsh; the cost increases significantly with the number of zones; and it is difficult to achieve complex shapes, such as avoiding hand shadows.

[0006] Ordinary projectors: Although they can project any image, they are bulky, consume a lot of power, generate a lot of heat, have light source brightness that is not suitable for comfortable reading at close range, have optical designs that are not optimized for desktop lighting, and are expensive. Utility Model Content

[0007] This invention addresses the technical problems existing in the aforementioned study lamps by proposing a rationally designed intelligent desktop study lamp based on DLP projection technology that utilizes digital light processing projection technology to achieve precise, dynamic, and programmable area lighting.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: the intelligent desktop learning lamp based on DLP projection technology provided by this utility model includes a lamp stand with angle adjustment function, a lamp head is provided on the lamp stand, a power cord is provided inside the lamp head and the lamp stand, and a light source module, a DLP engine module, an image acquisition module, a sensing module and a main control unit are provided inside the lamp head. The light source module is used to generate illumination light; The image acquisition module is used to acquire image information of the desktop area in real time; The main control unit connects the control circuits of the image acquisition module and the DLP projection engine module. The main control unit is used to process the image information acquired by the image acquisition module, identify the target working area on the desktop, generate corresponding mask image data based on the target working area, and send the mask image data to the control circuit of the DLP projection engine module. The mask image data is used to instruct the DLP projection engine module to form illumination spots only in the area corresponding to the target working area; The DLP projection engine module includes a digital micromirror device (DMD), an illumination optics system, a projection optics system, and a control circuit. It is used to receive mask image data and control the DMD to modulate the light emitted by the light source module. The modulated light is then projected onto the desktop by the projection optics system to form an illumination spot.

[0009] Preferably, the lamp holder includes at least one of multiple connecting rods, multiple adjustable tubing sections, and multiple sheet metal sections, and the lamp holder also includes a hinge for angle adjustment.

[0010] Preferably, the lamp head is equipped with an LED illuminance and color temperature adjustment control device, a light-transmitting plate, and a human body detection sensor. The LED illuminance and color temperature adjustment control device adjusts the brightness of the light source module according to the ambient light intensity.

[0011] Preferably, the main control unit identifies the target working area on the desktop, including the outline of a book, paper, or a user-specified area.

[0012] Preferably, the light source module includes at least one RGB high-brightness LED light source or a white light + phosphor high-brightness LED light source for generating the light required for illumination; the RGB high-brightness LED light source is configured as a high color rendering index, flicker-free LED light source, which complies with the standard GB / T 7000.1-2023 Luminaires Part 1: General Requirements and Tests for healthy eye-protection lamps.

[0013] Preferably, the image acquisition module includes at least one camera and one depth sensor or ToF sensor; the camera is used to capture desktop images in real time, identify books, papers, user hand positions, and ambient light levels in the work area; the depth sensor or ToF sensor is used to detect changes in user sitting posture distance in real time.

[0014] Preferably, the main control unit includes a processor MCU, a voice MCU, an information input terminal, a driver terminal, an operation input terminal, a wireless transmission module, and a pickup unit, wherein the operation input terminal is connected to at least a physical button and a touch panel.

[0015] Preferably, the communication end of the wireless transmission module is used to connect to a mobile application, and the communication method is Wi-Fi or Bluetooth; the communication end of the pickup unit is used to connect to a voice assistant application, and the communication method is Wi-Fi or Bluetooth.

[0016] Compared with existing technologies, the advantages and positive effects of the intelligent desktop learning lamp based on DLP projection technology provided by this utility model are as follows: 1. Extremely precise lighting: DLP micromirror-level precision can reach millions of pixels, achieving lighting area control capabilities far exceeding those of traditional zoned LEDs. It can project light spots of any complex shape, perfectly matching the contours of the work object. 2. Effectively eliminates glare: Prevents light from directly shining into the eyes or causing strong reflections, thus improving visual comfort; 3. Significant energy savings: Illuminates only the necessary areas, greatly reducing ineffective lighting and light pollution, and lowering energy consumption; 4. Intelligent Adaptation: Automatically tracks changes in the work area, eliminating the need for manual adjustments and improving ease of use; 5. Enhance focus: The contrast between a dark or low-brightness background and a bright work area helps users concentrate; 6. Protect privacy and avoid disturbing others: In shared spaces, minimize light interference with others; 7. Healthy light quality: It adopts high-quality LED light source to provide stable, high color rendering and adjustable color temperature comfortable light; 8. Relatively compact structure: Thanks to modern micro DLP technology, it has a high space utilization rate and can be well applied to smart learning desks. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A perspective view of a smart desktop learning lamp based on DLP projection technology provided for an embodiment; Figure 2 An internal structural block diagram of a smart desktop learning lamp based on DLP projection technology provided in this embodiment; Figure 3 A schematic diagram of the DLP projection lighting principle of a smart desktop learning lamp based on DLP projection technology provided in this embodiment; Figure 4 A system workflow diagram of an intelligent desktop learning lamp based on DLP projection technology provided for an embodiment; Figure 5 A working diagram showing the application of a smart desktop learning lamp based on DLP projection technology on a smart learning desk; In the above figures: 1. Lamp head; 2. Lamp stand; 21. Connecting rod; 22. Hinge; 23. Sliding buckle; 3. LED illuminance and color temperature adjustment control device; 4. Light-transmitting panel; 5. Human body detection sensor; 6. Camera; 7. Smart study table. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Examples, such as Figures 1-5As shown, the intelligent desktop learning lamp based on DLP projection technology provided by this utility model includes a lamp holder 2 with angle adjustment function, a lamp head 1 is provided on the lamp holder 2, a power cord is provided inside the lamp head 1 and the lamp holder 2, and a light source module, a DLP engine module, an image acquisition module, a sensing module and a main control unit are provided inside the lamp head 1. Specifically, the light source module is used to generate illumination light; the image acquisition module is used to acquire image information of the desktop area in real time; the main control unit connects the control circuit of the image acquisition module and the DLP projection engine module, and the main control unit is used to process the image information acquired by the image acquisition module, identify the target working area on the desktop, generate corresponding mask image data based on the target working area, and send the mask image data to the control circuit of the DLP projection engine module; the mask image data is used to instruct the DLP projection engine module to form an illumination spot only in the area corresponding to the target working area; the DLP projection engine module includes a digital micromirror device (DMD), an illumination optical system, a projection optical system, and a control circuit, and is used to receive the mask image data and control the DMD to modulate the light emitted by the light source module, and the projection optical system projects the modulated light onto the desktop to form an illumination spot.

[0022] The working principle of the intelligent desktop learning lamp based on DLP projection technology provided by this utility model is as follows: S1: The user turns on the learning light, or the learning light is automatically woken up by the human body detection sensor 5; S2: The data input side of the sensing module captures the current desktop image through the camera 6 of the image acquisition module; S3: The main control unit processes images, identifies the precise contours of the main working area, and detects ambient light and hand position; S4: The main control unit generates an optimal mask image based on the recognition results, user preset preferences, and the current ambient light intensity. User preset preferences include, for example, preferences for the shape of the lighting area, brightness preferences, and whether to avoid hand shadows. In this image: "Bright" area (micromirror activated): precisely corresponds to the work area (book) that needs to be illuminated, and can intelligently avoid the user's hands (avoiding casting shadows on the book) or areas that the user specifies should not be illuminated (such as computer screen). "Dark" areas (micromirror off): correspond to other parts of the desktop, blank areas of the keyboard, screen areas, etc. S5: The mask image data is sent to the control circuit of the DLP engine to drive the DMD micromirrors to flip according to the image requirements; S6: The light emitted by the light source is modulated by the DMD and then precisely projected onto the desktop through the projection lens, forming bright, clearly defined light spots only in the "bright" areas defined by the mask image; S7: The main control unit adjusts the overall brightness of the light source according to the ambient light and user settings; S1 to S7 cycle continuously, running at n to m frames per second. The dynamic real-time tracking of the illuminated area is fed back to the main control unit for adaptive adjustment. Describe the specific model of the DLP engine (e.g., TI DLP chipset) and select either HD 720p or FHD 1080p micro DMD.

[0023] This utility model provides an intelligent desktop study lamp based on DLP projection technology. Through the DLP projection engine module integrated within the lamp head 1, the light emitted by the light source module is modulated by the DMD and precisely projected onto the desktop through the projection lens. Only in the "bright" areas defined by the mask image are bright, clear light spots formed, achieving high-definition illumination. The light source has a high color rendering index and is flicker-free, achieving both eye protection and effective study lighting. It also improves the lighting effect and reduces eye strain caused by changes in desktop materials and environments. The resulting positive effects include: 1) Extremely Precise Illumination: DLP micromirror-level precision reaches millions of pixels, achieving lighting area control capabilities far exceeding traditional zoned LEDs. It can project light spots of any complex shape, perfectly matching the contours of the work object; 2) Effective Glare Elimination: Prevents light from directly shining into the eyes or producing strong reflections, improving visual comfort; 3) Significant Energy Saving: Illuminates only the necessary areas, greatly reducing ineffective lighting and light pollution, and lowering energy consumption; 4) Enhanced Concentration: The contrast between a dark or low-brightness background and a bright work area helps users concentrate; 5) Privacy Protection and No Disturbance to Others: Especially in shared spaces, by creating clearly defined lighting zones, it minimizes light interference to others; 6) Relatively Compact Structure: Thanks to modern micro-DLP technology, it has a high space utilization rate, allowing this study lamp to be well applied to the Smart Study Desk 7, improving the actual performance of both the study lamp and the Smart Study Desk 7.

[0024] To improve lighting performance, the lamp holder 2 provided by this utility model has foldable properties. The lamp holder 2 includes at least one of the following: multiple connecting rods, multiple adjustable tubing sections, and multiple sheet metal sections. The lamp holder 2 also includes a hinge 22 for angle adjustment. The lower hinge 22 has a sliding buckle 23 on its back, such as an I-shaped sliding buckle structure. The sliding buckle 23 can be tightly fitted with a groove on the smart study table 7. The base height of the entire study lamp can be changed by manually adjusting the actual engagement height between the sliding buckle 23 and the groove. In this embodiment, the lamp holder 2 preferably adopts a design of two connecting rods 21 + hinge 22. The connecting rod 21 has a rotation center at its hinge joint with the hinge 22. By rotating the connecting rod 21, the actual angle of the lamp head 1 can be changed. Combined with the adjustment of the base installation level of the lamp holder 2, this allows the product to meet the usage requirements of different users, improving the overall utilization rate of the product. At the same time, when not in use, the lamp head 1 and the folding frame can be folded back to the position against the back of the smart study table 7 to prevent the lamp head 1 from being accidentally damaged.

[0025] Furthermore, this invention includes an LED illuminance and color temperature adjustment control device 3, a light-transmitting plate 4, and a human body detection sensor 5 on the lamp head 1. The LED illuminance and color temperature adjustment control device 3 is connected to the main control unit and is equipped with a temperature sensor and an illuminance sensor. The main control unit adjusts the brightness of the light source module based on the ambient light intensity collected by the LED illuminance and color temperature adjustment control device 3, thereby automatically obtaining better lighting quality. The human body detection sensor 5 converts infrared sensing into an electrical signal and transmits it to the sensing module. The chip in the sensing module processes this signal to control the on / off state of the light source module. Therefore, the human body detection sensor 5 can automatically drive the learning lamp to start, which is beneficial for improving the intelligence of the learning lamp.

[0026] To improve the adaptive lighting performance of this invention, the main control unit of this invention identifies the outline of the target working area on the desktop, including books, papers, or user-specified areas. Based on the identification results of the target working area, the main control unit can automatically track changes in the working area without manual adjustment, thus improving ease of use.

[0027] To improve the light quality of the light source module, the light source module provided by this utility model includes at least one RGB high-brightness LED light source or one white light + phosphor high-brightness LED light source for generating the light required for illumination. The RGB high-brightness LED light source is configured as a high color rendering index, flicker-free LED light source, conforming to the standard GB / T7000.1-2023 Luminaires Part 1: General Requirements and Tests for healthy eye-protection lamps. By using a high-quality LED light source, stable, high color rendering, and adjustable color temperature comfortable light is provided, thereby offering healthy light quality and a longer service life.

[0028] To improve the image acquisition performance of the image acquisition module for capturing the current desktop image, the lighting image acquisition module provided by this utility model includes at least one camera 6 and one depth sensor or ToF sensor. The camera 6 is used to capture the desktop image in real time and identify the position of books, papers, user's hands, and ambient light in the work area. The depth sensor or ToF sensor is used to detect changes in the user's sitting posture distance in real time. The sensing module is electrically connected to the image acquisition module. The sensing module adds information processing hardware to the image acquisition module, enabling this learning lamp to improve its ability from data acquisition to data intelligence. This allows the main control unit to better generate accurate and highly corresponding mask image data based on the target work area, thereby ensuring that the user has an ideal lighting profile when using the learning lamp.

[0029] To enhance the intelligence of this learning lamp, the main control unit provided by this invention includes a processor MCU, a voice MCU, an information input terminal, a driver terminal, an operation input terminal, a wireless transmission module, and a microphone unit. The operation input terminal is connected to at least a physical button and a touch panel. The communication terminal of the wireless transmission module connects to a mobile application via Wi-Fi or Bluetooth. The communication terminal of the microphone unit connects to a voice assistant application via Wi-Fi or Bluetooth. The voice MCU can process voice commands to achieve voice control of the learning lamp. Thus, by operating the mobile application and voice assistant application on a mobile terminal, users can set preferences and requirements, which are then transmitted to the main control unit. This allows the main control unit to receive lighting control requirements matched to the user, thereby improving the accuracy of the learning lamp's target working area.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A smart desktop study lamp based on DLP projection technology, comprising a lamp holder with angle adjustment function, a lamp head mounted on the lamp holder, and a power cord disposed inside the lamp head and the lamp holder, characterized in that, The lamp head is internally equipped with a light source module, a DLP engine module, an image acquisition module, a sensing module, and a main control unit; The image acquisition module is used to acquire image information of the desktop area in real time; The main control unit connects the control circuits of the image acquisition module and the DLP projection engine module. The main control unit is used to process the image information acquired by the image acquisition module, identify the target working area on the desktop, generate corresponding mask image data based on the target working area, and send the mask image data to the control circuit of the DLP projection engine module. The mask image data is used to instruct the DLP projection engine module to form illumination spots only in the area corresponding to the target working area; The DLP projection engine module is used to receive mask image data and modulate the light emitted by the light source module. The modulated light is then projected onto the desktop to form an illumination spot.

2. The smart desktop learning lamp based on DLP projection technology according to claim 1, characterized in that, The lamp holder is hinged to the outer shell of the lamp head, and the other end of the lamp holder is used to be set on the smart learning table. The lamp holder includes at least one of multiple connecting rods, multiple adjustable tubes, and multiple sheet metal parts. The lamp holder also includes a hinge for angle adjustment.

3. The smart desktop learning lamp based on DLP projection technology according to claim 2, characterized in that, The lamp head is equipped with an LED illuminance and color temperature adjustment control device, a light-transmitting plate, and a human body detection sensor. The LED illuminance and color temperature adjustment control device adjusts the brightness of the light source module according to the ambient light intensity.

4. The smart desktop learning lamp based on DLP projection technology according to claim 3, characterized in that, The main control unit identifies the outline of the target working area on the desktop, including books, papers, or user-specified areas.

5. The DLP projection technology based smart desktop learning lamp according to claim 1, wherein, The light source module includes at least one RGB high-brightness LED light source or a white light + phosphor high-brightness LED light source, used to generate the light required for illumination; the RGB high-brightness LED light source is configured as a high color rendering index, flicker-free LED light source.

6. The DLP projection technology based smart desktop learning lamp according to claim 1, wherein, The image acquisition module includes at least one camera and one depth sensor or ToF sensor; the camera is used to capture desktop images in real time, identify books, papers, user hand positions, and ambient light levels in the work area; the depth sensor or ToF sensor is used to detect changes in user sitting posture distance in real time.

7. The DLP projection technology based smart desktop learning lamp according to claim 1, wherein, The main control unit includes a processor MCU, a voice MCU, an information input terminal, a driver terminal, an operation input terminal, a wireless transmission module, and a pickup unit.

8. The DLP projection technology based smart table-top learning lamp according to claim 7, wherein, The communication terminal of the wireless transmission module is used to connect to a mobile application; the communication terminal of the sound pickup unit is used to connect to a voice assistant application.

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