Light guide type ultraviolet phototherapy instrument and light emitting module thereof

Abstract

According to the light guide type ultraviolet phototherapy instrument and the light emitting module thereof, ultraviolet light spots capable of dynamically changing are formed through an ultraviolet LED array, so that precise irradiation on a lesion area can be realized, meanwhile, the ultraviolet LED array and a light emitting plate are separated in an optical fiber conduction mode, so that the ultraviolet LED array can be cooled in a centralized manner, and the light emitting module is used for emitting light in the light guide type ultraviolet phototherapy instrument. Therefore, the heat dissipation problem of the dense LED array is solved. Meanwhile, in the overall design of the phototherapy instrument, the split design of the machine body and the machine head can be adopted, that is, the LED light source array and the heat dissipation system are arranged in the machine body, the light emitting plate, the light path system and the camera are arranged on the machine head, and the machine body and the machine head are connected through an optical cable, so that high power and miniaturization of the phototherapy instrument can be considered.

Description

Technical Field

[0001] The present invention relates to an ultraviolet therapy device, and in particular to a light-guiding light output module and an ultraviolet therapy device. 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] At the same time, since ultraviolet light therapy devices require relatively high ultraviolet power, light therapy devices that currently use LED ultraviolet light sources need to solve the heat dissipation problem while increasing the emission power of the LED light source. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the present invention provides a light output module of a light-guiding phototherapy device, comprising an ultraviolet light source array composed of a plurality of independent ultraviolet LED units, each ultraviolet LED unit being connected to each light output grid of a grid-type light output board through an optical fiber, and each ultraviolet LED unit in the light source array can be independently controlled by a driving circuit of the LED array, thereby forming an ultraviolet light beam with changeable shape on the light output board.

[0005] Furthermore, each UV LED unit in the light source array has a base and a top cover with a hole; a UV LED is arranged in the base; and the UV light emitted by each UV LED is introduced into the corresponding light output grid on the light output plate through an optical fiber connected to the hole of the top cover.

[0006] Furthermore, the luminous power of each ultraviolet LED unit is also adjustable.

[0007] The present invention also discloses a light-guiding phototherapy device, comprising the light-emitting module of the light-guiding phototherapy device as described above, and also comprising a control module for controlling the light-guiding light-emitting module, an optical path module for controlling the ultraviolet light beam, and a camera module for acquiring an image of the lesion area on the skin and transmitting it to the control module; the control module identifies the shape and distance data of the lesion area, turns on a specific ultraviolet LED unit on the light source array, emits ultraviolet light through an optical fiber and introduces it into a light-emitting plate, so that the ultraviolet light beam emitted by the light-emitting plate has a light spot with the same shape as the lesion area, and is projected onto the lesion area via the optical path module, and the ultraviolet irradiation spot projected onto the lesion area is the same size and shape as the lesion area.

[0008] Furthermore, each UV LED unit in the light source array has a base and a top cover with a hole; a UV LED is arranged in the base; and the UV light emitted by each UV LED is introduced into the corresponding light output grid on the light output plate through an optical fiber connected to the hole of the top cover.

[0009] Furthermore, the luminous power of each ultraviolet LED unit is also adjustable; the control module also analyzes the chromaticity data of the lesion area at the same time, thereby distinguishing the severity of the lesions in various parts within the lesion area and adjusting the brightness of specific LEDs, so that the LEDs in areas with severe lesions are brighter, increasing their ultraviolet radiation values, while the LEDs in areas with lighter lesions are darker, reducing their ultraviolet radiation values.

[0010] Furthermore, the light-guided phototherapy device adopts a separate body and head setting, that is, the LED light source array and the heat dissipation system are arranged in the body, and the light output plate, the optical path system and the camera are arranged in the head, and the body and the head are connected by an optical cable.

[0011] The present invention forms a dynamically changeable ultraviolet light spot through an ultraviolet LED array, thereby realizing precise irradiation of the diseased area, and at the same time uses optical fiber transmission to separate the ultraviolet LED array and the light output plate, so that the ultraviolet LED array can be centrally cooled, thereby solving the heat dissipation problem of the dense LED array. At the same time, in the overall design of the phototherapy device, a split design of the body and the head can be adopted, that is, the LED light source array and the heat dissipation system are arranged in the body, the light output plate, the optical path system and the camera are arranged in the head, and the body and the head are connected by an optical cable, so that the high power and miniaturization of the phototherapy device can be taken into account.

[0012] 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

[0013] Figure 1 It is a schematic diagram of the principle of a light output module of a light-guiding light therapy device in a preferred embodiment of the present invention;

[0014] Figure 2 It is a schematic diagram of the principle of a light-guided phototherapy device in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1In the illustrated embodiment, the optical waveguide light output module for ultraviolet therapy device provided by the present invention first includes a light source array composed of a plurality of independent ultraviolet LED units 3 integrated on a driving circuit board 1. Each ultraviolet LED unit in the light source array has a base 2 and a top cover 3 with a hole. An ultraviolet LED 4 is arranged in the base 2. The ultraviolet light emitted by each ultraviolet LED 4 is introduced into the corresponding light output grid 8 on the light output board 7 through an optical fiber 6 connected to the hole of the top cover 3. In this way, each ultraviolet LED unit 3 of the light source array and each light output grid 8 on the light output board 7 form a mapping relationship through the optical fiber 6. The control module 13 can independently control the switch and power of each ultraviolet LED unit in the light source array through the driving circuit board 1, and then independently control the light output and light output power of each light output grid 8 on the light output board 7. Each light output grid is thus similar to a pixel point, so that different light spot patterns can be formed, and the brightness of each point in the light spot pattern can also be controlled.

[0017] The ultraviolet light therapy device provided by the present invention includes the above-mentioned light-guiding light output module, and also includes a control module for controlling the light-guiding light output module, an optical path module for controlling the ultraviolet light beam, and a camera module for acquiring an image of the lesion area on the skin and transmitting it to the control module. Figure 2 In the embodiment shown, after the focusing lens unit 10 converges, it is reflected by the reflector unit 11, and then the ultraviolet light beam is projected onto the lesion area through the astigmatism lens unit 12, so that the shape and size of the ultraviolet light spot are the same as those of the lesion area 15, thereby achieving the purpose of precise irradiation. Among them, the focusing lens unit of the optical path module is used to converge the ultraviolet light beam; the reflector unit is used to reflect the ultraviolet light beam passing through the focusing lens unit and adjust its direction and angle; the astigmatism lens unit 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 that of the lesion area. Of course, in other embodiments, those skilled in the art may also adopt other optical path systems as needed, and the present invention is not intended to be limited to this.

[0018] Since the control module 13 of the present invention can also independently control the power of each ultraviolet LED unit in the light source array through the driving circuit board 1, in a further embodiment, the control module 13 also analyzes the chromaticity (grayscale) data of the lesion area at the same time, so as to distinguish the severity of the lesions in each part of the lesion area and adjust the brightness of a specific LED, so that the LED in the area with severe lesions is brighter, and its ultraviolet radiation value is increased, while the LED in the area with milder lesions is darker, and its ultraviolet radiation value is reduced. For example, PWM (pulse width modulation) is used to adjust the brightness of each LED. PWM (pulse width modulation) is a technology that can control the brightness of LEDs by adjusting the time ratio of "on" and "off" of electrical signals. Its basic principle is: the PWM signal is a square wave. By changing the duty cycle of the square wave (i.e., the ratio of the "on" time to the total cycle), the average value of the output voltage can be adjusted. The higher the duty cycle, the brighter the LED; the lower the duty cycle, the darker the LED. Compared with linear dimming, PWM does not adjust the current size, but reduces energy loss through time control. At the same time, by fine-tuning the duty cycle, very fine brightness control can be achieved, and the LED can quickly respond to changes in the PWM signal to achieve real-time adjustment.

[0019] The present invention forms a dynamically changeable ultraviolet light spot through an ultraviolet LED array, thereby realizing accurate irradiation of the lesion area, and at the same time uses optical fiber transmission to separate the ultraviolet LED array and the light output plate, so that Figure 2 The fan 9 in the apparatus cools the UV LED array in a centralized manner, thereby solving the heat dissipation problem of the dense LED array. At the same time, in the overall design of the phototherapy device, a split design of the body and the head can be adopted, that is, the LED light source array and the heat dissipation system are arranged in the body, and the light output plate, the optical path system and the camera are arranged in the head. The body and the head are connected by an optical cable, so that the high power and miniaturization of the phototherapy device can be taken into account.

[0020] 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 light output module of a light-guiding light therapy device, characterized in that: The invention comprises an ultraviolet light source array composed of a plurality of independent ultraviolet LED units, each of which is connected to each light output grid of a grid-type light output board through an optical fiber. Each ultraviolet LED unit in the light source array can be independently controlled by a driving circuit of the LED array, thereby forming an ultraviolet light beam with a changeable shape on the light output board.

2. The light output module of the light-guiding light therapy device according to claim 1, wherein: Each UV LED unit in the light source array has a base and a top cover with holes; the base is provided with UV LEDs; the UV light emitted by each UV LED is introduced into the corresponding light output grid on the light output plate through an optical fiber connected to the hole of the top cover.

3. The light output module of the light-guiding light therapy device as claimed in claim 1, wherein: The luminous power of each UV LED unit is also adjustable.

4. A light-guided phototherapy device, characterized in that: The invention comprises a light output module of the light-guiding phototherapy device as described in claim 1, and also comprises a control module for controlling the light-guiding light output module, an optical path module for controlling the ultraviolet light beam, and a camera module for acquiring an image of the lesion area on the skin and transmitting the image to the control module; the control module identifies the shape and distance data of the lesion area, turns on a specific ultraviolet LED unit on the light source array, emits ultraviolet light and introduces it into a light output plate through an optical fiber, so that the ultraviolet light beam emitted by the light output plate has a light spot with the same shape as the lesion area, and is projected onto the lesion area via the optical path module, and the ultraviolet irradiation spot projected onto the lesion area is the same size and shape as the lesion area.

5. The light-guided phototherapy device as claimed in claim 4, wherein: Each UV LED unit in the light source array has a base and a top cover with holes; the base is provided with UV LEDs; the UV light emitted by each UV LED is introduced into the corresponding light output grid on the light output plate through an optical fiber connected to the hole of the top cover.

6. The light-guided phototherapy device as claimed in claim 4, wherein: The luminous power of each ultraviolet LED unit is also adjustable; the control module also analyzes the chromaticity data of the lesion area at the same time, so as to distinguish the severity of the lesions in each part of the lesion area and adjust the brightness of specific LEDs, so that the LEDs in the areas with severe lesions are brighter, increasing their ultraviolet radiation values, while the LEDs in the areas with lighter lesions are darker, reducing their ultraviolet radiation values.

7. The light-guided phototherapy device as claimed in claim 4, wherein: The light-guided phototherapy device adopts a separate body and head setting, that is, the LED light source array and heat dissipation system are arranged in the body, and the light output plate, optical path system and camera are arranged in the head. The body and the head are connected by an optical cable.

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