High-precision ultraviolet phototherapy instrument with ultraviolet mask

Abstract

The invention discloses a high-precision ultraviolet phototherapy instrument with an ultraviolet light mask. The high-precision ultraviolet phototherapy instrument comprises an ultraviolet LED light source module, an ultraviolet light liquid crystal digital mask module, a light beam control module, a camera and a microprocessor system, the camera acquires an image of a lesion area on the skin and transmits the image to the micro-processing system, the micro-processing system identifies the shape and the distance of the lesion area, and a mask of the lesion area is formed on the ultraviolet light liquid crystal digital mask module according to the data, so that a light spot corresponding to the lesion area in shape is formed through the ultraviolet light liquid crystal digital mask module. And then the light beam is projected to the lesion area through the light beam control module, so that the shape and the size of the ultraviolet light beam of the irradiated lesion area are consistent with those of the lesion area.

Description

Technical Field

[0001] The invention relates to a high-precision ultraviolet therapy device, in particular to a high-precision ultraviolet therapy device with an ultraviolet mask. Background Art

[0002] With the development of medical technology, ultraviolet light therapy is increasingly used in the treatment of skin diseases. However, existing ultraviolet light therapy equipment often cannot avoid damaging healthy skin during the irradiation process. Therefore, how to achieve accurate irradiation of ultraviolet light has become an urgent problem to be solved.

[0003] Liquid crystal display (LCD) liquid crystal molecules can change their arrangement under the action of an electric field, thereby controlling whether light can pass through.

[0004] Therefore, this characteristic of LCD can be used as a photomask for ultraviolet light to provide a high-precision ultraviolet light therapy device with a shading system. Summary of the invention

[0005] To achieve the above-mentioned objectives, the present invention provides a high-precision ultraviolet light therapy device with an ultraviolet light mask, comprising an ultraviolet LED light source module, an ultraviolet liquid crystal digital mask module, a light beam control module, a camera, and a microprocessor system; the camera acquires an image of the lesion area on the skin and transmits it to the microprocessor system, the microprocessor system identifies the shape and distance of the lesion area, and forms a mask of the lesion area on the ultraviolet liquid crystal digital mask module based on the data, so that a light spot corresponding to the shape of the lesion area is formed through the ultraviolet liquid crystal digital mask module, and then is projected onto the lesion area through the light beam control module, so that the shape and size of the ultraviolet light beam irradiating the lesion area are consistent with the lesion area.

[0006] Furthermore, the ultraviolet liquid crystal digital mask is a TFT LCD, and the microprocessor system controls the electric field in the liquid crystal screen through the driving control circuit and adjusts the arrangement of the liquid crystal molecules, that is, each pixel can independently control its light transmittance state, and the ultraviolet light can be blocked or transmitted by switching pixels to realize whether the ultraviolet light passes through or not, thereby obtaining a pixel-level mask of any shape.

[0007] Furthermore, the TFT LCD is a UV-TFT LCD made of a quartz glass substrate and a UV transparent polymer liquid crystal material.

[0008] Furthermore, the light beam control module includes a straightening light unit for converting the ultraviolet light emitted by the ultraviolet LED module into a parallel light beam.

[0009] Furthermore, the beam control module comprises a focusing lens unit for converging the ultraviolet beam.

[0010] Furthermore, the reflector unit of the beam control module is used to reflect the ultraviolet light beam passing through the focusing lens unit and adjust its direction and angle.

[0011] Furthermore, the light beam control module includes a light diffusion lens unit, which is used to control the size of the ultraviolet light spot according to the distance data of the lesion area, so that the size of the ultraviolet light spot is the same as the lesion area.

[0012] The present invention has the following technical advantages:

[0013] High Precision: The pixel resolution of the LCD screen determines the accuracy of the shading, allowing for fine adjustments.

[0014] Flexibility: It can be adjusted in real time according to different lesion shapes and sizes to meet various treatment needs.

[0015] Protective: Effectively reduces light exposure to healthy skin and reduces unnecessary damage.

[0016] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the system structure of the high-precision ultraviolet therapy device with an ultraviolet mask of the present invention. DETAILED DESCRIPTION

[0018] The following describes several preferred embodiments of the present invention with reference to the drawings in the specification, so that the technical content is clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0019] like Figure 1 As shown, the high-precision ultraviolet light therapy device with a shading system provided by the present invention includes an ultraviolet LED light source module 1 as an ultraviolet light source; a straight light unit 2 of a light beam control module, used to convert the ultraviolet light emitted by the ultraviolet LED module 1 into a parallel light beam; an ultraviolet liquid crystal digital mask module 3, used to make the ultraviolet light beam passing through it form an ultraviolet light spot with the same shape as the lesion area 8; a focusing lens unit 5 of the light beam control module, used to converge the ultraviolet light beam; a reflector unit 6 of the light beam control module, used to reflect the ultraviolet light beam passing through the focusing lens unit 5 and adjust its direction and angle; a diffraction lens unit 7 of the light beam control module, used to control the size of the ultraviolet light spot according to the distance data of the lesion area, so that the size of the ultraviolet light spot is the same as that of the lesion area 8.

[0020] When the high-precision ultraviolet therapy device is working, the camera 4 first obtains the image of the lesion area on the skin and transmits it to the microprocessor system 3. The microprocessor system 3 identifies the shape and distance of the lesion area 8 and other data through machine learning or computer vision technology, and then forms a mask of the lesion area on the ultraviolet liquid crystal digital mask module 3 through the driving control circuit 4. After the ultraviolet light emitted by the ultraviolet LED light source module 1 is adjusted to a straight light by the straight light unit 2, it passes through the ultraviolet liquid crystal digital mask module 3 to obtain an ultraviolet light beam with the same shape as the lesion area 8, and then passes through the focusing lens unit 5, the reflector unit 6 and the astigmatism lens unit 7 to project the ultraviolet light beam onto the lesion area, so that the shape and size of the ultraviolet light spot are the same as those of the lesion area 8, thereby achieving the purpose of precise irradiation.

[0021] In this embodiment, the ultraviolet liquid crystal digital mask 3 is a TFT LCD, and the microprocessor system 3 controls the electric field in the liquid crystal screen through the driving control circuit 4 to adjust the arrangement of the liquid crystal molecules, that is, each pixel can independently control its light transmittance state, and the ultraviolet light is blocked or transmitted by switching pixels to realize whether the ultraviolet light passes through, thereby obtaining a mask of any shape.

[0022] Conventional TFT LCDs have a certain blocking effect on ultraviolet light. One way to deal with this is to increase the output power of the ultraviolet LED light source module 1. Another way to deal with this is to use a quartz glass substrate and UV transparent polymer liquid crystal materials to make a special UV-TFT LCD.

[0023] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A high-precision ultraviolet light therapy device with an ultraviolet light mask, characterized in that: It includes an ultraviolet LED light source module, an ultraviolet liquid crystal digital mask module, a beam control module, a camera, and a microprocessor system; the camera obtains an image of the lesion area on the skin and transmits it to the microprocessor system, the microprocessor system identifies the shape and distance of the lesion area, and forms a mask of the lesion area on the ultraviolet liquid crystal digital mask module according to the data, so that a light spot corresponding to the shape of the lesion area is formed through the ultraviolet liquid crystal digital mask module, and then is projected onto the lesion area through the beam control module, so that the shape and size of the ultraviolet light beam irradiating the lesion area are consistent with the lesion area.

2. The high-precision ultraviolet therapy device with an ultraviolet mask as claimed in claim 1, wherein: The ultraviolet liquid crystal digital mask is a TFT LCD. The microprocessor system controls the electric field in the liquid crystal screen through the drive control circuit and adjusts the arrangement of the liquid crystal molecules. That is, each pixel can independently control its light transmittance state, and the ultraviolet light is blocked or transmitted by switching pixels to realize whether the ultraviolet light passes through or not, thereby obtaining a pixel-level mask of any shape.

3. The high-precision ultraviolet therapy device with an ultraviolet mask as claimed in claim 2, wherein: TFT LCD is a UV-TFT LCD made of quartz glass substrate and UV transparent polymer liquid crystal material.

4. The high-precision ultraviolet therapy device with an ultraviolet mask as claimed in claim 1, wherein: The light beam control module comprises a straight light unit for converting the ultraviolet light emitted by the ultraviolet LED module into a parallel light beam.

5. The high-precision ultraviolet therapy device with an ultraviolet mask as claimed in claim 1, wherein: The beam control module comprises a condensing lens unit for converging the ultraviolet beam.

6. The high-precision ultraviolet therapy device with an ultraviolet mask as claimed in claim 1, wherein: The reflector unit of the beam control module is used to reflect the ultraviolet light beam passing through the focusing lens unit and adjust its direction and angle.

7. The high-precision ultraviolet therapy device with an ultraviolet mask as claimed in claim 1, wherein: The light beam control module comprises a light diffusion lens unit, which is used to control the size of the ultraviolet light spot according to the distance data of the lesion area, so that the size of the ultraviolet light spot is the same as the lesion area.

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