LED light source for photobiomodulation, and preparation method therefor

Abstract

The present invention belongs to the technical field of LEDs, and particularly relates to a LED light source for photobiomodulation, and a preparation method therefor. The LED light source for photobiomodulation comprises LED wafers and a support, wherein the LED wafers comprise a first LED wafer having a wavelength of 440-445 nm, a second LED wafer having a wavelength of 450-455 nm and a third LED wafer having a wavelength of 465-470 nm; and the LED wafers are coated with a fluorescent glue, and the fluorescent glue is a mixture obtained by combining silica gel with a blue powder having an emission wavelength of 490-505 nm, a green powder having an emission wavelength of 530-540 nm, a red powder having an emission wavelength of 625-635 nm, a red powder having an emission wavelength of 650-660 nm, an infrared powder having an emission wavelength of 705-715 nm, an infrared powder having an emission wavelength of 745-755 nm, an infrared powder having an emission wavelength of 765-775 nm, an infrared powder having an emission wavelength of 810-830 nm, an infrared powder having an emission wavelength of 910-930 nm and an infrared powder having an emission wavelength of 1010-1030 nm. The LED light source for photobiomodulation in the present invention is applied to broad-spectrum energy therapy.

Description

LED light source for photobiomodulation and preparation method thereof Technical Field

[0001] The present invention relates to the field of LED technology, in particular to an LED light source for photobiomodulation and a preparation method thereof. Background Art

[0002] As living standards improve and understanding of life and health deepens, people's health goals are constantly evolving and enriching. From disease prevention and improved quality of life to enhanced happiness and fully realizing the potential for health and well-being across all life stages, the dimensions of people's evaluation of health are quietly but rapidly changing, becoming increasingly relevant to their lives. With the continuous development of lighting technology, people's requirements for lighting quality have evolved from clear, vivid visuals and safety to current health requirements.

[0003] Photobiomodulation therapy is: "A type of light therapy that utilizes non-ionizing forms of light within the visible and infrared spectrum, including lasers, LEDs, and broadband sources. It is a non-thermal process that involves endogenous chromophores inducing photophysical (i.e., linear and nonlinear) and photochemical events at various biological scales. This process can produce beneficial therapeutic effects, including but not limited to relief of pain or inflammation, immunomodulation, and promotion of wound healing and tissue regeneration." Essentially, exposing a wound or injury to red and infrared light can infuse our cells with energy, relieve pain, and promote faster healing.

[0004] Existing LED lamps for photobiomodulation mainly use narrow-wavelength monochromatic LEDs or lasers, which have certain limitations in regulating the human eye, relieving pain or inflammation, immune regulation, and promoting wound healing and tissue regeneration. Summary of the Invention

[0005] The object of the present invention is to provide an LED light source for photobiomodulation.

[0006] Another object of the present invention is to provide a method for preparing an LED light source for photobiomodulation.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] An LED light source for photobiomodulation, comprising an LED chip, a bracket and pins; the LED chip comprises a first LED chip with a wavelength of 440-445nm, a second LED chip with a wavelength of 450-455nm and a third LED chip with a wavelength of 465-470nm; the first LED chip, the second LED chip and the third LED chip are all arranged in the bracket, and the first LED chip, the second LED chip and the third LED chip are connected in series with the positive and negative poles of the bracket through the pins; the LED chip is coated with fluorescent glue, Fluorescent glue is a mixture of blue powder with an emission wavelength of 490-505nm, green powder with an emission wavelength of 530-540nm, red powder with an emission wavelength of 625-635nm, red powder with an emission wavelength of 650-660nm, infrared powder with an emission wavelength of 705-715nm, infrared powder with an emission wavelength of 745-755nm, infrared powder with an emission wavelength of 765-775nm, infrared powder with an emission wavelength of 810-830nm, infrared powder with an emission wavelength of 910-930nm, infrared powder with an emission wavelength of 1010-1030nm and silica gel.

[0009] Specifically, the silica gel: 490-505nm blue powder: emission wavelength of 530-540nm green powder: emission wavelength of 625-635nm red powder: emission wavelength of 650-660nm red powder: emission wavelength of 705-715nm infrared powder: emission wavelength of 745-755nm infrared powder: emission wavelength of 765-775nm infrared powder: emission wavelength of 810-830nm Powder: Infrared powder with an emission wavelength of 910-930nm: Infrared powder with an emission wavelength of 1010-1030nm is 3: (0.25-0.35): (1.1-1.3): (0.05-0.07): (0.12-0.18): (0.4-0.6): (0.4-0.6): (0.4-0.6): (0.5-0.7): (0.5-0.7): (0.6-0.8).

[0010] Specifically, the silica gel: 500nm blue powder: 530nm green powder: 630nm red powder: 650nm red powder: 710nm infrared powder: 750nm infrared powder: 770nm infrared powder: 820nm infrared powder: 920nm infrared powder: 1024nm infrared powder is 3:0.3:1.2:0.06:0.15:0.4:0.4:0.4:0.5:0.5:0.6.

[0011] Preferably, it further includes a boss, and the second LED chip is arranged on the boss.

[0012] Specifically, the peak spectral energy ratio of the bare crystal synthesized by the chips used in the first LED chip, the second LED chip and the third LED chip is: Φe (440-445nm): Φe (450-455nm): Φe (465-470nm) = (0.8-1.0): (0.8-1.0): (0.5-0.7).

[0013] Specifically, the spectral energy proportion of its packaged finished product is: Фe (350-439nm): Фe (439-459nm): Фe (460-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-1000nm) = (0.8%-1.1%): (1.8%-2.2%): (4.9%-5.2%): (16%-16.2%): (19.5%-20%): (54%-56%).

[0014] Specifically, the relative spectral heights of its packaged products are as follows: 420-440nm: ≤0.45, 440-470nm: ≤0.55, 470-520nm: ≥0.45, 520-570nm: ≥0.5, 570-610nm: ≥0.55, 610-645nm: ≥0.6, 645-730nm: ≥0.7, 730-800nm: peak 1, 800-900nm: ≥0.4, 900-1000nm: ≥0.25.

[0015] Specifically, the chromaticity width capacity of the packaged white light LED light source is controlled within the third-order MacAdam ellipse, and the spectral similarity SSI coefficient of the 4000K solar spectrum is greater than 85%.

[0016] Specifically, after being packaged into a mixed-color white LED light source, the light color quality requirements are controlled: Ra>95, TM-30-18, Rg>95, Rf>90, S / P ratio>1.8, M / P ratio>0.78, the color temperature meets 3800-4200K, and the chromaticity coordinates meet the 403 chromaticity standard.

[0017] A method for preparing an LED light source for photobiomodulation comprises the following steps:

[0018] S100: Place the LED chip in the bowl of the bracket. Use a die bonder to bond the LED chip to the bracket using insulating glue or silver glue. After bonding, bake in an oven at 150-160°C for 2h±10min to completely fix the LED chip on the bracket.

[0019] S200: After the die bonding process, the positive and negative electrodes of the bracket are connected using wire bonding technology using a gold wire bonding machine. The LED chips in the bracket's bowl are connected in series.

[0020] S300: Prepare 4000K fluorescent glue solution, which is silica gel, blue powder with an emission wavelength of 490-505nm, green powder with an emission wavelength of 530-540nm, red powder with an emission wavelength of 625-635nm, red powder with an emission wavelength of 650-660nm, infrared powder with an emission wavelength of 705-715nm, infrared powder with an emission wavelength of 745-755nm, infrared powder with an emission wavelength of 765-775nm, infrared powder with an emission wavelength of 810-830nm, infrared powder with an emission wavelength of 910-930nm, and infrared powder with an emission wavelength of 1010-1030nm. The mixture is prepared in proportion so that the light color meets the requirements of color parameter 403;

[0021] S400: Pour the 4000K fluorescent glue solution prepared in S300 into the glue barrel of the glue dispensing machine. After the glue and bubbles are removed, dispense the 4000K fluorescent glue solution into the bowl of the bracket according to the color parameter requirements. After dispensing, bake at 80℃ for 0.5h±5min, and then bake at 160℃ for 4h±10min.

[0022] S500: After the glue-dispensing and baking process, the LED light source product for photobiomodulation is threshed and then spectroscopically analyzed according to given color parameters using a spectrophotometer.

[0023] Compared with the prior art, the LED light source for photobiomodulation of the present invention has the following beneficial effects:

[0024] 1. The LED light source for photobiomodulation of the present invention can be used as an eye mask-type beauty product. The light color is soft, the relative spectral intensity of 645-730nm is ≥0.7, the spectral radiation energy of 600-699nm accounts for >19%, and the spectral radiation energy of 700-1000nm accounts for >54%. Therefore, it is rich in 650-700nm spectral content;

[0025] 2. The LED light source for photobiomodulation of the present invention has a 600-699nm content greater than 15%.

[0026] 3. The LED light source for photobiomodulation of the present invention has a 700-1000nm content of 55%. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a front structural schematic diagram of an LED light source for photobiomodulation according to the present invention.

[0028] FIG2 is a schematic diagram of the back structure of the LED light source for photobiomodulation of the present invention.

[0029] FIG3 is a cross-sectional view of the LED light source for photobiomodulation according to the present invention.

[0030] FIG4 is a graph showing the emission spectrum of a bare die LED light source for photobiomodulation according to the present invention.

[0031] FIG5 is a graph showing the luminous spectrum of the finished product of the LED light source package for photobiomodulation according to the present invention.

[0032] FIG6 is a test report of the LED light source for photobiomodulation of the present invention.

[0033] FIG. 7 is a graph showing the calculated similarity between the finished packaged LED light source for photobiomodulation of the present invention and a 4000K SSI spectrum.

[0034] FIG8 is a bin diagram showing the chromaticity landing point requirements of the finished product of the LED light source package for photobiomodulation according to the present invention.

[0035] Reference numerals: 10 - pin 11 - first LED chip 12 - second LED chip 13 - third LED chip 14 - bowl 15 - bracket 16 - boss 17 - fluorescent glue. DETAILED DESCRIPTION

[0036] The technical solutions of the present invention are further described in detail below with reference to Figures 1-8. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Although this specification describes the embodiments, not each embodiment contains only one independent technical solution. This description is provided for clarity only. Those skilled in the art should consider the specification as a whole. The embodiments can also be appropriately combined to form other embodiments that are understandable to those skilled in the art.

[0037] An LED light source for photobiomodulation includes an LED chip and a bracket 15; the LED chip includes a first LED chip 11 with a wavelength of 440-445nm, a second LED chip 12 with a wavelength of 450-455nm, and a third LED chip 13 with a wavelength of 465-470nm; the LED chip is coated with a fluorescent glue 17, which is a mixture of blue powder with an emission wavelength of 490-505nm, green powder with an emission wavelength of 530-540nm, red powder with an emission wavelength of 625-635nm, red powder with an emission wavelength of 650-660nm, infrared powder with an emission wavelength of 705-715nm, infrared powder with an emission wavelength of 745-755nm, infrared powder with an emission wavelength of 765-775nm, infrared powder with an emission wavelength of 810-830nm, infrared powder with an emission wavelength of 910-930nm, infrared powder with an emission wavelength of 1010-1030nm and silica gel.

[0038] The fluorescent glue of this embodiment is silica gel: 490-505nm blue powder: emission wavelength of 530-540nm green powder: emission wavelength of 625-635nm red powder: emission wavelength of 650-660nm red powder: emission wavelength of 705-715nm infrared powder: emission wavelength of 745-755nm infrared powder: emission wavelength of 765-775nm infrared powder: emission wavelength of 810-830nm Powder: Infrared phosphor with an emission wavelength of 910-930nm: Infrared phosphor with an emission wavelength of 1010-1030nm is a mixture of 3: (0.25-0.35): (1.1-1.3): (0.05-0.07): (0.12-0.18): (0.4-0.6): (0.4-0.6): (0.4-0.6): (0.5-0.7): (0.5-0.7): (0.6-0.8). These phosphors and their ratios are used to adjust the LED spectrum to meet the spectral colorimetric parameter requirements.

[0039] In this embodiment, the first LED chip 11, the second LED chip 12, and the third LED chip 13 are all disposed within a bracket 15, and are connected in series to the positive and negative electrodes of the bracket 15. Specifically, the first LED chip 11, the second LED chip 12, and the third LED chip 13 are disposed within a bowl 14 of the bracket 15, and are connected in series to the positive and negative pins 10 of the bracket 15 using gold wire bonding technology.

[0040] This embodiment further includes a boss 16 , and the second LED chip 12 is disposed on the boss 16 . The boss 16 increases the brightness of the product and the emission intensity of the second LED chip 12 .

[0041] In this embodiment, the peak spectral energy ratio of the bare die synthesized from the chips used in the first, second, and third LED chips 11, 12, and 13 is: φe (440-445 nm): φe (450-455 nm): φe (465-470 nm) = (0.8-1.0): (0.8-1.0): (0.5-0.7). This spectral energy ratio meets the spectral parameter requirements and spectral efficacy.

[0042] The spectral energy proportions of the packaged finished product of this embodiment are: Фe (350-439nm): Фe (439-459nm): Фe (460-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-1000nm) = (0.8%-1.1%): (1.8%-2.2%): (4.9%-5.2%): (16%-16.2%): (19.5%-20%): (54%-56%).

[0043] The spectral energy of the finished product of the LED light source package for photobiomodulation is greater than 15% in the 600-699nm range, and about 55% in the 700-1000nm range.

[0044] The luminous spectrum distribution of the finished product of the LED light source package for photobiomodulation of the present invention is shown in Table 1.

[0045] Table 1. Luminous spectrum distribution of the finished product of LED light source package for photobiomodulation.

[0046] The relative spectral heights of the packaged finished product of this embodiment are as follows: 420-440nm: ≤0.45, 440-470nm: ≤0.55, 470-520nm: ≥0.45, 520-570nm: ≥0.5, 570-610nm: ≥0.55, 610-645nm: ≥0.6, 645-730nm: ≥0.7, 730-800nm: peak 1, 800-900nm: ≥0.4, 900-1000nm: ≥0.25.

[0047] The chromaticity width of the white LED light source packaged in this embodiment is controlled within the third-order MacAdam ellipse, and the spectral similarity (SSI) coefficient to the 4000K solar spectrum is greater than 85%. The color tolerance is less than 3, and the light color consistency is good, with no color difference, which is more sensory and comfortable. The higher the spectral similarity, the closer it is to sunlight, and the better the spectral effect.

[0048] The color quality requirements for the white LED light source packaged in this embodiment after color mixing are: Ra>95, TM-30-18, Rg>95, Rf>90, S / P ratio>1.8, M / P ratio>0.78, color temperature of 3800-4200K, and chromaticity coordinates that meet the 403 chromaticity standard. High S / P and M / P.

[0049] Table 2 Comparison of the S / P ratio and M / P ratio of the finished packaged LED light source for photobiomodulation of the present invention and 4000K sunlight.

[0050] The LED light source for photobiomodulation can be used as an eye mask-type beauty product. The light color is soft, the relative spectral intensity of 645-730nm is ≥0.7, and the spectral radiation energy of 600-699nm accounts for >19%, and the spectral radiation energy of 700-1000nm accounts for >54%. Therefore, it is rich in 650-700nm spectrum content.

[0051] A method for preparing an LED light source for photobiomodulation comprises the following steps:

[0052] S100: Place the LED chip in the bowl 14 of the bracket 15. Use a die bonder to bond the LED chip to the bracket 15 using insulating glue or silver glue. After bonding, bake in an oven at 150-160°C for 2h±10min to completely fix the LED chip to the bracket 15.

[0053] S200: After the die bonding is completed, the positive and negative electrodes of the bracket 15 are connected by wire bonding technology using a gold wire bonding machine, and the LED chips in the bowl 14 of the bracket 15 are connected in series.

[0054] S300: Prepare 4000K fluorescent glue solution. The fluorescent glue solution is silica gel: 500nm blue powder: 530nm green powder: 630nm red powder: 650nm red powder: 710nm infrared powder: 750nm infrared powder: 770nm infrared powder: 820nm infrared powder: 920nm infrared powder: 1024nm. The infrared powder is prepared in a ratio of 3:0.3:1.2:0.06:0.15:0.4:0.4:0.4:0.5:0.5:0.6, so that the light color meets the requirements of color parameter 403;

[0055] S400: Pour the 4000K fluorescent glue solution prepared in S300 into the glue barrel of the glue dispensing machine. After the glue and bubbles are removed, dispense the 4000K fluorescent glue solution into the bowl 14 of the bracket 15 according to the color parameter requirements. After dispensing, bake at 80℃ for 0.5h±5min, and then bake at 160℃ for 4h±10min.

[0056] S500: After the glue-dispensing and baking process, the LED light source product for photobiomodulation is threshed and then spectroscopically analyzed according to given color parameters using a spectrophotometer.

[0057] The spectral parameters of the finished product of the LED light source package for photobiomodulation of the present invention are shown in Table 3.

[0058] Table 3 Spectral parameters of the finished product of the LED light source package for photobiomodulation of the present invention.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An LED light source for photobiomodulation, comprising an LED chip, a bracket and pins; characterized in that: The LED chip includes a first LED chip with a wavelength of 440 - 445 nm, a second LED chip with a wavelength of 450 - 455 nm, and a third LED chip with a wavelength of 465 - 470 nm; the first LED chip, the second LED chip, and the third LED chip are all arranged within a bracket, and the first LED chip, the second LED chip, and the third LED chip are connected in series with the positive and negative electrodes of the bracket through leads; a fluorescent glue is coated on the LED chip, and the fluorescent glue is a mixture of blue powder with an emission wavelength of 490 - 505 nm, green powder with an emission wavelength of 530 - 540 nm, red powder with an emission wavelength of 625 - 635 nm, red powder with an emission wavelength of 650 - 660 nm, infrared powder with an emission wavelength of 705 - 715 nm, infrared powder with an emission wavelength of 745 - 755 nm, infrared powder with an emission wavelength of 765 - 775 nm, infrared powder with an emission wavelength of 810 - 830 nm, infrared powder with an emission wavelength of 910 - 930 nm, infrared powder with an emission wavelength of 1010 - 1030 nm, and silica gel. The ratio of the silica gel: blue powder with an emission wavelength of 490 - 505 nm: green powder with an emission wavelength of 530 - 540 nm: red powder with an emission wavelength of 625 - 635 nm: red powder with an emission wavelength of 650 - 660 nm: infrared powder with an emission wavelength of 705 - 715 nm: infrared powder with an emission wavelength of 745 - 755 nm: infrared powder with an emission wavelength of 765 - 775 nm: infrared powder with an emission wavelength of 810 - 830 nm: infrared powder with an emission wavelength of 910 - 930 nm: infrared powder with an emission wavelength of 1010 - 1030 nm is 3:(0.25 - 0.35):(1.1 - 1.3):(0.05 - 0.07):(0.12 - 0.18):(0.4 - 0.6):(0.4 - 0.6):(0.4 - 0.6):(0.5 - 0.7):(0.5 - 0.7):(0.6 - 0.8).

2. The LED light source for photobiomodulation according to claim 1, wherein: The ratio of the silica gel: blue powder with an emission wavelength of 500 nm: green powder with an emission wavelength of 530 nm: red powder with an emission wavelength of 630 nm: red powder with an emission wavelength of 650 nm: infrared powder with an emission wavelength of 710 nm: infrared powder with an emission wavelength of 750 nm: infrared powder with an emission wavelength of 770 nm: infrared powder with an emission wavelength of 820 nm: infrared powder with an emission wavelength of 920 nm: infrared powder with an emission wavelength of 1024 nm is 3:0.3:1.2:0.06:0.15:0.4:0.4:0.4:0.5:0.5:0.

6.

3. The LED light source for photobiomodulation according to claim 1, wherein: It further includes a boss, and the second LED chip is arranged on the boss.

4. The LED light source for photobiomodulation according to claim 1, characterized in that, The peak spectral energy ratio of the bare chips synthesized by the chips used for the first LED chip, the second LED chip, and the third LED chip is: Фe(440 - 445 nm): Фe(450 - 455 nm): Фe(465 - 470 nm) = (0.8 - 1.0):(0.8 - 1.0):(0.5 - 0.7).

5. The LED light source for photobiomodulation according to claim 1, characterized in that: The spectral energy ratio of its packaged finished product is: Фe(350 - 439nm): Фe(439 - 459nm): Фe(460 - 499nm): Фe(500 - 599nm): Фe(600 - 699nm): Фe(700 - 1000nm) = (0.8% - 1.1%):(1.8% - 2.2%):(4.9% - 5.2%):(16% - 16.2%):(19.5% - 20%):(54% - 56%).

6. The LED light source for photobiomodulation according to claim 1, wherein: The relative spectral height of its packaged finished product is as follows: 420 - 440nm: ≤0.45, 440 - 470nm: ≤0.55, 470 - 520nm: ≥0.45, 520 - 570nm: ≥0.5, 570 - 610nm: ≥0.55, 610 - 645nm: ≥0.6, 645 - 730nm: ≥0.7, 730 - 800nm: peak value 1, 800 - 900nm: ≥0.4, 900 - 1000nm: ≥0.

25.

7. The LED light source for photobiomodulation according to claim 1, characterized in that: The chromaticity tolerance of its packaged white LED light source is controlled within the third - order MacAdam ellipse, and the spectral similarity SSI coefficient of the 4000K solar spectrum > 85%.

8. The LED light source for photobiomodulation according to claim 1, characterized in that: The requirements for the light - color quality control of its packaged mixed - color white LED light source are as follows: meeting Ra > 95, TM - 30 - 18, Rg > 95, Rf > 90, S / P ratio > 1.8, M / P ratio > 0.78, the color temperature meets 3800 - 4200K, and the chromaticity coordinates meet the 403 chromaticity standard.

9. A method for preparing an LED light source for photobiomodulation according to any one of claims 1-8, characterized in that: It includes the following preparation steps: S100: Set the LED chip in the cup of the bracket. The LED chip is fixed on the bracket by die - bonding with insulating glue or silver glue using a die - bonder. After die - bonding, bake it in an oven at 150 - 160°C for 2h ± 10min to completely fix the LED chip on the bracket; S200: After die - bonding baking, use a gold - wire wire - bonder to connect the positive and negative electrodes of the bracket by wire bonding technology, and the LED chips in the cup of the bracket are connected in series; S300: Prepare a 4000K fluorescent glue solution. The fluorescent glue solution is a mixture prepared by proportioning silica gel, blue powder with a wavelength of 490 - 505nm, green powder with an emission wavelength of 530 - 540nm, red powder with an emission wavelength of 625 - 635nm, red powder with an emission wavelength of 650 - 660nm, infrared powder with an emission wavelength of 705 - 715nm, infrared powder with an emission wavelength of 745 - 755nm, infrared powder with an emission wavelength of 765 - 775nm, infrared powder with an emission wavelength of 810 - 830nm, infrared powder with an emission wavelength of 910 - 930nm, and infrared powder with an emission wavelength of 1010 - 1030nm to make the light color meet the requirements of color parameter 403; S400: Pour the 4000K fluorescent glue solution prepared in S300 into the glue bucket of the dispenser. After discharging and defoaming, dispense the 4000K fluorescent glue solution into the cup of the bracket according to the requirements of color parameters. After dispensing, first bake it at 80°C for 0.5h ± 5min, and then bake it at 160°C for 4h ± 10min; S500: After threshing the light bioregulation LED light source products after dispensing and baking, spectroscopically test them according to the given color parameters using a spectro-testing machine.

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