WO2024109783A1 - Led eye-care lighting use method and device used by same - Google Patents

Abstract

Provided in the present application are an LED eye-care lighting use method and a device used by same. A panchromatic bionic lighting source serves as a lighting source, the spectrum of the panchromatic bionic lighting source is a spectrum of which the light source radiation power distribution curve is 95%+/-5% similar to that of the natural spectrum of the same color temperature, and the spectrum color rendering index of the panchromatic bionic lighting source is greater than 95, R1 to R15 all being greater than 90. During a lighting process, the color temperature of the lighting source remains unchanged, and switching from high brightness to low brightness and switching from low brightness to high brightness can be completed within a specific time, thus changing static light into dynamic light, as well as avoiding visual self-adaption. By means of targetedly adjusting the lighting source and a lighting source brightness value changing mode during the lighting process, the method bionically changes the brightness under excellent lighting source illumination, so as to achieve the "reset" of the function of human eyes of actively adjusting the eye axis, enabling people to blink involuntarily. In addition, actively adjusting the eye axis accords with visual habits, thus achieving the effects of protecting eyes, relieving eye fatigue and relieving or preventing myopia.

Description

A method and device for using LED eye protection lighting

This application claims priority to the Chinese patent application filed with the China Patent Office on November 21, 2022, with application number 202211453530.2 and invention name “A method for using LED eye protection lighting and its device”, the entire contents of which are incorporated by reference in this application.

Technical Field

The present application relates to the field of eye protection lighting, and specifically to a method and device for using LED eye protection lighting.

Background technique

The human eye was formed and evolved under natural lighting, and the adaptability of vision to natural light is irreplaceable. As shown in Figure 1, when the eyes look at pure blue light, the eyes will open wider unnaturally, so that the image of blue light falls on the retina; when the eyes look at pure red light, the eyes will squint unnaturally, so that the image of red light falls on the retina. There is a lack of red light spectrum and too much blue light spectrum in the ordinary artificial lighting spectrum. After long-term use of the eyes, it can not only damage the retinal macular area, but also easily cause "eye fatigue" and form myopia.

At present, the research on full-spectrum lighting has received extensive attention because the amount of blue light is reduced and the red light spectrum is increased in the spectrum. However, the common full-spectrum in the prior art still has the problem of more blue light spectrum and less red light spectrum. The approximation of the radiation power distribution curve of the light source in the full spectrum to the natural spectrum of the same color temperature can only reach about 80% at most. Red light stimulates long-wave sensitive cones, slows down axial elongation, and prevents animals from moving from hyperopia to emmetropia, so that the eyes always remain hyperopic. The most significant anatomical changes are the reduction of vitreous cavity elongation, the forward movement of the retina toward the cornea, and the increase in choroidal thickness, which also moves the retina forward, which to a certain extent will produce a significant response to optical focusing. When red light is applied to emmetropia, the hyperopic effect produced by red light can delay the further elongation of the eye axis, which has a certain effect on preventing the development of myopia. Therefore, strengthening the red light spectrum in the full spectrum and weakening the blue light spectrum are of great significance in reducing eye fatigue and preventing myopia.

Furthermore, when the human eye is reading or writing, it tends to "concentrate" or "stare at the object being viewed". In this way, after long-term viewing, the eyes will be fixed for a long time and the eyes will be easily fatigued, especially when the red light spectrum is missing in the luminous light color, the eyes will easily cause the eye axis to lengthen and produce myopia if they look at the object for a long time. In order to solve the above problems, for example, Chinese patent CN108743268A discloses glasses and methods of use that use light intensity to exercise the eye muscles to prevent and treat myopia or presbyopia, and discloses the principle of spectral adjustment of the eye axis to prevent and treat myopia and hyperopia. However, this scheme is similar to the function of a light feeding instrument, and uses a combination of multiple white light sources to achieve a natural spectrum. The fundamental problem is the lack of red light spectrum, and it is impossible to achieve visual real imaging of the object's restored color. Another journal "Study on the short-term effects of full-spectrum white light of different illumination on the human eye axis, Sichuan Medicine 2020.01.24" discloses the conclusion that full-spectrum white light of different intensities will have an impact on the eye axis. However, neither of them discloses how to adjust the brightness to achieve active adjustment of the eye axis without causing the eyes to adapt. Therefore, it is of great significance to develop an eye protection lighting method that can well realize an adjustable eye axis method that conforms to visual habits to protect the eyes, relieve eye fatigue, and reduce or prevent myopia.

technical problem

The purpose of the present application is to provide a method for using LED eye protection lighting and a device thereof, in view of the technical problem that the existing lighting technology cannot well realize the adjustable eye axis method in accordance with visual habits to protect the eyes, reduce eye fatigue and prevent myopia when the human eye is reading or writing. The lighting method of the present application adopts a full-color bionic light source that highly fits natural light as the lighting light source, and provides independent dimming bionic visual control during the lighting process, turning static light into dynamic light. The spectrum remains unchanged when the brightness changes and does not cause visual adaptation, so that the eyes blink and the eyeballs focus and reset autonomously, thereby realizing active adjustment of the eye axis in accordance with visual habits, while protecting the eyes, reducing eye fatigue, and alleviating or preventing myopia.

In order to achieve the above purpose, the technical solution adopted in this application is:

A method for using LED eye protection lighting, wherein the lighting light source adopts a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve of the light source is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90; during the lighting process, the color temperature of the light source remains unchanged; the method for using eye protection lighting comprises the following steps:

Step 1: Maintain 100% brightness and illuminate for 6s to 18s;

Step 2: Reduce the brightness from 100% to 25% to 45% within 0.5s to 2s, and keep lighting for 2s to 6s;

Step 3: After that, the brightness value rises to 100% brightness value within 0.5s to 2s;

Step 4, repeat the steps of step 1 to step 3 to perform cyclic lighting; wherein each cycle of step 1 to step 3 takes 12s to 22s.

The method for using LED eye protection lighting disclosed in the present application first adopts a full-color bionic light source as the lighting source, the spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve of the light source is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, wherein the color rendering indexes R1 to R15 are all greater than 90; a high-saturation red light and a high-saturation cyan light are formed in the spectrum of the lighting source, and according to the imaging principle of color on the retina, the full-color bionic light source helps to adjust the visual focal length and eye axis during visual imaging, realizes visual imaging of objects with restored colors, ensures high adaptability and comfort of vision, and effectively relieves eye fatigue under lighting. At the same time, the lighting method provided by the present application includes the following steps: step 1, maintaining a brightness value of 100%, lighting for 6s to 18s; step 2, reducing the brightness value from 100% to 25% to 45% within 0.5s to 2s, and maintaining lighting for 2s to 6s; step 3, then the brightness value rises to 100% within 0.5s to 2s; step 4, repeating the steps of step 1 to step 3 for cyclic lighting; wherein the duration of steps 1 to 3 is 12s to 22s. During the entire lighting process, the color temperature of the light source remains unchanged, and the switching from high brightness to low brightness and from low brightness to high brightness is completed within a specific time. The brightness value is gradually changed in a cycle, turning static light into dynamic light, and at the same time avoiding visual adaptation. By specifically adjusting the lighting source and the method of changing the brightness value of the light source during the lighting process, under the illumination of excellent light sources, the brightness is changed in an ecological way to "reset" the human eye's active adjustment of the eye axis, making people blink unconsciously, and actively adjusting the eye axis in accordance with visual habits, thereby protecting the eyes, reducing eye fatigue, and alleviating or preventing myopia.

Furthermore, in the spectrum of the full-color bionic light source, the approximation of the light source radiation power distribution curve to the natural light with the same color temperature reaches 95%±5%, which means that in any same wavelength band of the spectrum of the full-color bionic light source and the spectrum of natural light with the same color temperature, the ratio of the smaller absolute light power to the larger absolute light power is 95%±5%.

Furthermore, in the spectrum of the full-color bionic light source, the approximation of the light source radiation power distribution curve to the natural light of the same color temperature is Ai/Bi; wherein Ai refers to the radiation amount of the full-color bionic light source at inm, and Bi is the radiation amount of the natural light spectrum with the same color temperature at inm; Ai/Bi=90%~100%, wherein 380nm≤i≤700nm.

Further, when 380nm≤i≤480nm, Ai/Bi is 90% to 95%; when 480nm≤i≤600nm, Ai/Bi is 95% to 100%; when 600nm≤i≤700nm, Ai/Bi is 90% to 100%.

Furthermore, in step 1, the brightness value is maintained at 100%, and the lighting time is 6s to 16s. For example, the brightness value is maintained at 100%, and the lighting time is 6s; 7s; 8s; 9s; 10s; 11s; 12s; 13s; 14s; 15s; 16s.

Further, in step 2, the brightness value is reduced from 100% to 25% to 45% within 0.5s to 1.5s, and the lighting is maintained for 2s to 5s. Studies have found that the time from the high brightness value to the low brightness value and the lighting time of the low brightness value are both key factors for realizing unconscious blinking and actively adjusting the eye axis, and under the synergistic effect of the reasonable selection range of the low brightness value, it can effectively improve the comfort of the eyes, relieve eye fatigue, protect the eyes, and achieve the effect of reducing or preventing myopia. Among them, adjusting the high brightness value to the low brightness value too quickly will produce an adaptive effect on the human eye, and the human eye will not have time to adjust the eye axis, because the adaptive time length of the vision or the adaptive conditioned reflex of the vision to the external sense under the change or switching of light and dark light will cause the eye axis to not change, and it is impossible to actively adjust the eye axis, and it is difficult to achieve the effect of relieving eye fatigue and reducing or preventing myopia. However, adjusting the high brightness value to the low brightness value too slowly will not have the effect of converting static light to dynamic light, and the effect of relieving eye fatigue will be significantly worse, and good eye protection effect cannot be achieved. In step 2, the time for the high brightness value to decrease to the low brightness value can be 0.5s; 0.6s; 0.7s; 0.8s; 0.9s; 1s; 1.1s; 1.2s; 1.3s; 1.4s; 1.5s. In step 2, the lighting time of the low brightness value can be 2s, 3s; 4s, 5s.

Further, in step 3, the brightness value rises to 100% brightness value within 0.5s to 1.5s. Studies have found that the time from the low brightness value to the high brightness value and the lighting time of the high brightness value are key factors for realizing unconscious blinking and actively adjusting the eye axis, which can effectively improve the comfort of eye use, relieve eye fatigue, protect the eyes, and achieve the necessary conditions for reducing or preventing myopia. Among them, adjusting the low brightness value to the high brightness value too quickly will produce an adaptive effect on the human eye, and the human eye will not have time to adjust the eye axis, because the adaptive time length of the vision or the adaptive conditioned reflex of the vision to the external sense under the change or switching of light and dark light will cause the eye axis to not change, and it is impossible to actively adjust the eye axis, and it is difficult to achieve the effect of relieving eye fatigue and reducing or preventing myopia. However, adjusting the low brightness value to the high brightness value too slowly will not have the effect of converting static light to dynamic light, and the effect of relieving eye fatigue will be significantly worse, and good eye protection effect cannot be achieved. For example, in step 3, the time for the low brightness value to rise to the high brightness value can be 0.5s; 0.6s; 0.7s; 0.8s; 0.9s; 1s; 1.1s; 1.2s; 1.3s; 1.4s; 1.5s.

Furthermore, the total time taken for step 1 to step 3 is 12s to 20s. Studies have found that even if the switching time in the brightness conversion process is met, the total time in the entire brightness adjustment process is also a key factor affecting the eye protection effect. The time in the entire brightness adjustment process should not be too long or too short, otherwise it will significantly reduce eye comfort and have a poor effect on reducing or preventing myopia. For example, the time taken for step 1 to step 3 is 12s; 13s; 14s; 15s; 16s; 17s; 18s; 19s; 20s.

Furthermore, the brightness value of 100% is not less than 600 Lux, and the brightness value of 25% to 45% is not greater than 400 Lux. Selecting the appropriate brightness can increase people's comfort and relieve eye fatigue. Preferably, the brightness value of 100% is not less than 800 Lux, and the brightness value of 25% to 45% is not greater than 300 Lux. More preferably, the brightness value of 100% is not less than 800 Lux, and the brightness value of 25% to 45% is 150 to 300 Lux.

Another object of the present application is to provide an LED eye protection lighting device used in the above-mentioned lighting method.

An LED eye protection lighting device comprises a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources;

The control module is used to provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module at the same time; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness.

The present application provides an LED eye protection lighting device, comprising a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, and the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources; the control module is used to simultaneously provide a current I1 magnitude signal of the low color temperature light source group and a current I2 magnitude signal of the high color temperature light source group to the driving power module; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively The LED eye protection lighting device disclosed in the present application realizes the change of lighting brightness by adjusting the current of the high color temperature light source group and the low color temperature light source group at the same time, so that when the brightness of the surface of the viewed object changes minimally, it can cause the human eye to blink passively involuntarily, and the eyeball can focus and reset autonomously, so as to actively adjust the eye axis and prevent the eye axis from lengthening.

Furthermore, it also includes an infrared remote controller, and the control module includes an infrared receiving device, and the infrared receiving device is used to receive the remote control signal of the infrared remote controller. According to the remote control signal, the control module generates a current I1 magnitude signal and a current I2 magnitude signal.

Furthermore, the control module also includes a light sensor.

Furthermore, the spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1~R15 are all greater than 90.

Furthermore, the low color temperature light source group is formed by connecting a plurality of low color temperature full-color bionic light sources in series, in parallel or in series and parallel, and the high color temperature light source group is formed by connecting a plurality of high color temperature full-color bionic light sources in series, in parallel or in series and parallel.

Furthermore, the color temperature value of the low color temperature light source group and the color temperature value of the high color temperature light source group are two different color temperature values within the range of 2700K-5600K.

Further, the color temperature value of the low color temperature light source group and the color temperature value of the high color temperature light source group are respectively located in any two color temperature intervals of 2700K to 3000K, 4000K to 4200K, 4700K to 5200K and 5500K to 6000K. Preferably, the color temperature value of the low color temperature light source group is any color temperature value of 2700K to 3000K, and the color temperature value of the high color temperature light source group is any color temperature value of 5500K to 6000K.

Furthermore, when the color temperature of the full-color bionic light source is 2700K-3000K, in the spectrum of the full-color bionic light source, the absolute optical power value of 380-435nm purple light is less than 0.35; the absolute optical power value of 435-475nm blue light is greater than 0.40; the absolute optical power value of 475-492nm cyan light is greater than 0.45; the absolute optical power value of 492-577nm green light is greater than 0.50; the absolute optical power value of 577-597nm yellow light is greater than 0.75; the absolute optical power value of 597-622nm orange light is greater than 0.80; and the absolute optical power value of 622-700nm red light is greater than 0.80.

Furthermore, when the color temperature of the full-color bionic light source is 4000K-4200K, in the spectrum of the full-color bionic light source, the absolute optical power value of 380-435nm purple light is less than 0.40; the absolute optical power value of 435-475nm blue light is less than 0.65; the absolute optical power value of 475-492nm cyan light is greater than 0.60; the absolute optical power value of 492-577nm green light is greater than 0.65; the absolute optical power value of 577-597nm yellow light is greater than 0.80; the absolute optical power value of 597-622nm orange light is greater than 0.8; and the absolute optical power value of 622-700nm red light is greater than 0.80.

Furthermore, when the color temperature of the full-color bionic light source is 5500K-6000K, in the spectrum of the full-color bionic light source, the absolute optical power value of 380-435nm purple light is less than 0.45; the absolute optical power value of 435-475nm blue light is less than 0.80; the absolute optical power value of 475-492nm cyan light is greater than 0.70; the absolute optical power value of 492-577nm green light is greater than 0.80; the absolute optical power value of 577-597nm yellow light is greater than 0.80; the absolute optical power value of 597-622nm orange light is greater than 0.80; and the absolute optical power value of 622-700nm red light is greater than 0.70.

Spectral power: The spectrum emitted by a light source is often not a single wavelength, but a mixed radiation of many different wavelengths. The spectral radiation of a light source in the order of wavelengths and the distribution of the intensity of each wavelength is called the spectral power distribution of the light source.

The parameters used to characterize the size of spectral power are divided into absolute spectral power and relative spectral power, and then the absolute spectral power distribution curve: a curve drawn with the absolute values of the energy of various wavelengths of spectral radiation.

Relative spectral power distribution curve: refers to the spectral power distribution curve that compares the energy of various wavelengths of the light source's radiation spectrum and normalizes it so that the radiation power changes only within a specified range. The relative spectral power of the largest radiation power is 1, and the relative spectral power of other wavelengths is less than 1.

In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

1. The method for using LED eye protection lighting disclosed in the present application first adopts a full-color bionic light source as the lighting source, and the spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve of the light source is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1~R15 are all greater than 90; the spectrum of the lighting source forms a high-saturation red light and a high-saturation cyan light existence mode, and according to the imaging principle of color on the retina, the full-color bionic light source helps to adjust the visual focal length and eye axis during visual imaging, realizes visual imaging of restoring the color of objects, ensures high adaptability and comfort of vision, and effectively relieves eye fatigue under lighting. At the same time, the lighting method provided by the present application includes the following steps: step 1, maintaining a brightness value of 100%, lighting for 6s to 18s; step 2, reducing the brightness value from 100% to 25% to 45% within 0.5s to 2s, and maintaining lighting for 2s to 6s; step 3, then the brightness value rises to 100% within 0.5s to 2s; step 4, repeating the steps of step 1 to step 3 for cyclic lighting; wherein the duration of steps 1 to 3 is 12s to 22s. During the entire lighting process, the color temperature of the light source remains unchanged, and the switching from high brightness to low brightness and from low brightness to high brightness is completed within a specific time. The brightness value changes gradually in a cycle, turning static light into dynamic light, and avoiding visual adaptation at the same time. By targetedly adjusting the lighting source and the method of changing the brightness value of the light source during the lighting process, the score for relieving eye fatigue can reach 9.6 points, and the treatment efficiency of moderate to high myopia and mild myopia is 100%, which can be reduced by up to 200 degrees. Under excellent light source illumination, the brightness changes by imitating ecology to "reset" the human eye's active adjustment of the eye axis, making people blink unconsciously, and actively adjusting the eye axis in line with visual habits, thereby protecting the eyes, alleviating eye fatigue, and reducing and preventing myopia.

2. The present application provides a device for LED eye protection lighting, including a control module, a driving power module and a light source group module; the light source group module includes a low color temperature light source group and a high color temperature light source group, and the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources; the control module is used to simultaneously provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness. The LED eye protection lighting device disclosed in the present application realizes the change of lighting brightness by simultaneously adjusting the current magnitude of the high color temperature light source group and the low color temperature light source group, so that when the brightness of the surface of the viewed object is minimally changed, it can cause the human eye to passively blink involuntarily, and the eyeball can focus and reset autonomously, so as to actively adjust the eye axis and prevent the eye axis from becoming longer.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram showing the structure of the position of light of different colors falling on the retina.

FIG. 2 is a schematic diagram of the structure of an LED eye protection lighting device.

FIG. 3 is a schematic diagram of the structure of a driving power module and a light source group module.

FIG. 4 is a spectrum diagram of the low color temperature light source group in Example 1.

FIG. 5 is a spectrum diagram of the high color temperature light source group in Example 1.

FIG. 6 is a spectrum diagram of the low color temperature light source group in Example 2.

FIG. 7 is a spectrum diagram of the high color temperature light source group in Example 2.

FIG. 8 is a spectrum diagram of the high color temperature light source group in Example 3.

FIG9 is a chromatogram of the light source of Comparative Example 2 (upper figure) and a spectrum of the low color temperature light source group in Example 3 (lower figure).

Embodiments of the present invention

The present application is described in detail below in conjunction with the accompanying drawings.

In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

Example 1

As shown in FIGS. 2 and 3 , an LED eye protection lighting device comprises a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources;

The control module is used to provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module at the same time; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness.

Preferably, an infrared remote controller is further included, and the control module includes an infrared receiving device, the infrared receiving device is used to receive the remote control signal of the infrared remote controller, and the control module generates a current I1 magnitude signal and a current I2 magnitude signal according to the remote control signal. The control module also includes a light sensor.

Specifically, the low color temperature light source group is composed of 18 full-color bionic (single power is 0.5W) white light LED light sources with a color temperature of 2700K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer, a second film layer and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material silica gel, the second film layer includes a second phosphor and a film-forming material silica gel, and the third film layer includes a third phosphor and a film-forming material silica gel. The mass ratio of the first phosphor, the second phosphor and the third phosphor is 20:40:35.

The first phosphor includes phosphor A2, and phosphor A2 is Y3(Al, Ga)5O12 with a light emission wavelength of 490 nm.

The second phosphor includes phosphor B1 and phosphor B2, phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm, and the mass ratio of phosphor B1 to phosphor B2 is 55:50.

The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F. Phosphor C1 is (Ca, Sr)AlSiN3 with a light emission wavelength of 630nm, phosphor C2 is (Ca, Sr)AlSiN3 with a light emission wavelength of 660nm, phosphor C3 is (Ca, Sr)AlSiN3 with a light emission wavelength of 679nm, phosphor D is (Ca, Sr)AlSiN3 with a light emission wavelength of 720nm, phosphor E is (Ca, Sr)AlSiN3 with a light emission wavelength of 740nm, and phosphor F is (Ca, Sr)AlSiN3 with a light emission wavelength of 795nm. The mass ratio of phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F is 9:13:16:21:23:27.

Meanwhile, the film forming method is a lamination method. The first film layer has a film thickness of 0.13 mm and a first phosphor concentration of 61%, the second film layer has a film thickness of 0.13 mm and a second phosphor concentration of 61%, and the third film layer has a film thickness of 0.13 mm and a third phosphor concentration of 61%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

Specifically, as shown in Figure 4, the absolute optical power value of 380-435nm purple light is 0.15; the absolute optical power value of 435-475nm blue light is 0.42; the absolute optical power value of 475-492nm cyan light is 0.48; the absolute optical power value of 492-577nm green light is 0.52; the absolute optical power value of 577-597nm yellow light is 0.78; the absolute optical power value of 597-622nm orange light is 0.85; and the absolute optical power value of 622-700nm red light is 0.84. The light source spectrum of the low color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 90%; when 480nm≤i≤600nm, Ai/Bi is 95%; when 600nm≤i≤700nm, Ai/Bi is 90%.

Specifically, the high color temperature light source is composed of 18 full-color bionic (single power is 0.5W) white light LED light sources with a color temperature of 5600K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer, a second film layer and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material silica gel, the second film layer includes a second phosphor and a film-forming material silica gel, and the third film layer includes a third phosphor and a film-forming material silica gel. The mass ratio of the first phosphor, the second phosphor and the third phosphor is 15:50:15.

The first phosphor includes phosphor A2, and phosphor A2 is Y3(Al, Ga)5O12 with a light emission wavelength of 490 nm.

The second phosphor includes phosphor B1 and phosphor B2, phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm, and the mass ratio of phosphor B1 to phosphor B2 is 20:26.

The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F. Phosphor C1 is (Ca, Sr)AlSiN3 with a light emission wavelength of 630nm, phosphor C2 is (Ca, Sr)AlSiN3 with a light emission wavelength of 660nm, phosphor C3 is (Ca, Sr)AlSiN3 with a light emission wavelength of 679nm, phosphor D is (Ca, Sr)AlSiN3 with a light emission wavelength of 720nm, phosphor E is (Ca, Sr)AlSiN3 with a light emission wavelength of 740nm, and phosphor F is (Ca, Sr)AlSiN3 with a light emission wavelength of 795nm. The mass ratio of phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F is 6:7:11:13:16:17.

At the same time, the film forming method is a lamination method, the thickness of the first film layer is 0.11 mm and the first phosphor concentration is 67%, the thickness of the second film layer is 0.11 mm and the second phosphor concentration is 67%, and the thickness of the third film layer is 0.11 mm and the third phosphor concentration is 67%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

Specifically, as shown in Figure 5, the absolute optical power value of 380-435nm purple light is 0.40; the absolute optical power value of 435-475nm blue light is 0.75; the absolute optical power value of 475-492nm cyan light is 0.72; the absolute optical power value of 492-577nm green light is 0.83; the absolute optical power value of 577-597nm yellow light is 0.82; the absolute optical power value of 597-622nm orange light is 0.85; and the absolute optical power value of 622-700nm red light is 0.77. The light source spectrum of the high color temperature light source group is a full-color bionic light source, and the approximation between the full-color bionic light source and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 95%; when 480nm≤i≤600nm, Ai/Bi is 100%; when 600nm≤i≤700nm, Ai/Bi is 100%.

The method for lighting using the lighting device comprises the following steps: during the lighting process, the color temperature of the light source remains unchanged.

Step 1, control I1 to the minimum output current, i.e. 0%, and I2 to 95% of the maximum output current, or control I1 to the maximum output current, i.e. 100%, and I2 to the minimum output current, i.e. 0%, and maintain the 100% brightness value at 900 Lux for 12 seconds;

Step 2: Reduce the brightness from 100% to 270 Lux within 0.8 s. At this time, I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current and I2 is 0%. Keep lighting for 4 s.

Step 3: The brightness value rises to 100% brightness value within 0.8s;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

In the actual application of the two light source groups, some specific parameter changes of dimming and color adjustment are shown in Table 1. By fixing the current ratio of the two white light modules and adjusting the current of each white light module, different brightness output sizes can be achieved.

Table 1

Example 2

An LED eye protection lighting device comprises a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources;

The control module is used to provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module at the same time; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness.

Specifically, the low color temperature light source group is composed of 18 full-color bionic (single power is 0.5W) white light LED light sources with a color temperature of 3000K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer, a second film layer and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material silica gel, the second film layer includes a second phosphor and a film-forming material silica gel, and the third film layer includes a third phosphor and a film-forming material silica gel. The mass ratio of the first phosphor, the second phosphor and the third phosphor is 20:50:35.

The first phosphor includes phosphor A2, and phosphor A2 is Y3(Al, Ga)5O12 with a light emission wavelength of 490 nm.

The second phosphor includes phosphor B1 and phosphor B2, phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm, and the mass ratio of phosphor B1 to phosphor B2 is 55:50.

The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F. Phosphor C1 is (Ca, Sr)AlSiN3 with a light emission wavelength of 630nm, phosphor C2 is (Ca, Sr)AlSiN3 with a light emission wavelength of 660nm, phosphor C3 is (Ca, Sr)AlSiN3 with a light emission wavelength of 679nm, phosphor D is (Ca, Sr)AlSiN3 with a light emission wavelength of 720nm, phosphor E is (Ca, Sr)AlSiN3 with a light emission wavelength of 740nm, phosphor F is (Ca, Sr)AlSiN3 with a light emission wavelength of 680nm, and phosphor C1 is (Ca, Sr)AlSiN3 with a light emission wavelength of 630nm. The length of (Ca, Sr)AlSiN3 is 795nm. The mass ratio of phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F is 9:12:15:20:21:25.

At the same time, the film forming method is the spraying method, the thickness of the first film layer is 0.004mm and the first phosphor concentration is 67%, the thickness of the second film layer is 0.004mm and the second phosphor concentration is 67%, and the thickness of the third film layer is 0.004mm and the third phosphor concentration is 67%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

The specific values are shown in Figure 6. The absolute optical power value of 380-435nm purple light is 0.33; the absolute optical power value of 435-475nm blue light is 0.48; the absolute optical power value of 475-492nm cyan light is 0.8; the absolute optical power value of 492-577nm green light is 0.9; the absolute optical power value of 577-597nm yellow light is 1.13; the absolute optical power value of 597-622nm orange light is 1.2; the absolute optical power value of 622-700nm red light is 1.37. The light source spectrum of the low color temperature light source group is a full-color bionic light source, and the approximation between the full-color bionic light source and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 93%; when 480nm≤i≤600nm, Ai/Bi is 98%; when 600nm≤i≤700nm, Ai/Bi is 97%.

Specifically, the high color temperature light source is composed of 18 full-color bionic (single power is 0.5W) white light LED light sources with a color temperature of 4200K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer, a second film layer and a third film layer stacked in sequence. The first film layer includes a first phosphor and a film-forming material silica gel, the second film layer includes a second phosphor and a film-forming material silica gel, and the third film layer includes a third phosphor and a film-forming material silica gel. The mass ratio of the first phosphor, the second phosphor and the third phosphor is 20:70:25.

The first phosphor includes phosphor A2, and phosphor A2 is Y3(Al, Ga)5O12 with a light emission wavelength of 490 nm.

The second phosphor includes phosphor B1 and phosphor B2, phosphor B1 is BaSi2O2N2 with a light emission wavelength of 525 nm, phosphor B2 is BaSi2O2N2 with a light emission wavelength of 540 nm, and the mass ratio of phosphor B1 to phosphor B2 is 30:40.

The third phosphor includes phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F. Phosphor C1 is (Ca, Sr) AlSiN3 with a light emission wavelength of 630nm, phosphor C2 is (Ca, Sr) AlSiN3 with a light emission wavelength of 660nm, phosphor C3 is (Ca, Sr) AlSiN3 with a light emission wavelength of 679nm, phosphor D is (Ca, Sr) AlSiN3 with a light emission wavelength of 720nm, phosphor E is (Ca, Sr) AlSiN3 with a light emission wavelength of 740nm, and phosphor F is (Ca, Sr) AlSiN3 with a light emission wavelength of 795nm. The mass ratio of phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F is 9:12:15:20:20:22.

At the same time, the film forming method is the spraying method, the thickness of the first film layer is 0.003mm and the first phosphor concentration is 67%, the thickness of the second film layer is 0.003mm and the second phosphor concentration is 67%, and the thickness of the third film layer is 0.003mm and the third phosphor concentration is 67%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

The specific values are shown in Figure 7. The absolute optical power value of 380-435nm purple light is 0.35; the absolute optical power value of 435-475nm blue light is 0.6; the absolute optical power value of 475-492nm cyan light is 0.88; the absolute optical power value of 492-577nm green light is 0.85; the absolute optical power value of 577-597nm yellow light is 1.0; the absolute optical power value of 597-622nm orange light is 0.95; the absolute optical power value of 622-700nm red light is 1.2. The light source spectrum of the high color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 95%; when 480nm≤i≤600nm, Ai/Bi is 98%; when 600nm≤i≤700nm, Ai/Bi is 97%.

The method for lighting using the lighting device comprises the following steps: during the lighting process, the color temperature of the light source remains unchanged.

Step 1: Control I1 to the minimum output current, i.e. 0%, and I2 to 84% of the maximum output current, maintain 100% brightness value at 800 Lux, and illuminate for 6 seconds;

Step 2: Reduce the brightness from 100% to 200 Lux within 2 seconds. At this time, I1 is 0% and I2 is 21% of the maximum output current. Keep lighting for 6 seconds.

Step 3: The brightness value rises to 100% brightness value within 2 seconds;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Example 3

An LED eye protection lighting device comprises a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources;

The control module is used to provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module at the same time; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness.

Specifically, the low color temperature light source group is composed of 18 full-color bionic (single power is 0.5W) white light LED light sources with a color temperature of 4000K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence. The first film layer includes a film-forming material silica gel and a first mixture, and the second film layer includes a film-forming material silica gel and a second mixture. The first mixture includes phosphor A2, phosphor B3 and phosphor C2 in a mass ratio of 20:70:30.

Among them, the phosphor B3 is BaSi2O2N2 with a luminescent wavelength of 535nm.

The second mixture includes phosphor D, phosphor E and phosphor F in a mass ratio of 20:20:25.

Meanwhile, the film forming method is a film pressing method, the film thickness of the first film layer is 0.16 mm and the first mixture concentration is 69%, and the film thickness of the second film layer is 0.16 mm and the second mixture concentration is 69%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

Specifically, as shown in Figure 9, in the spectrum, the absolute optical power value of 380-435nm purple light is 0.33; the absolute optical power value of 435-475nm blue light is 0.42; the absolute optical power value of 475-492nm cyan light is 0.72; the absolute optical power value of 492-577nm green light is 0.66; the absolute optical power value of 577-597nm yellow light is 0.88; the absolute optical power value of 597-622nm orange light is 0.88; and the absolute optical power value of 622-700nm red light is 0.95. The light source spectrum of the low color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 91%; when 480nm≤i≤600nm, Ai/Bi is 99%; when 600nm≤i≤700nm, Ai/Bi is 100%.

Specifically, the high color temperature light source is composed of 18 full-color bionic white light LED light sources (single power is 0.5W) with a color temperature of 6000K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence.

The first film layer includes film-forming material silica gel and a first mixture, and the second film layer includes film-forming material silica gel and a second mixture. The first mixture includes phosphor A2, phosphor B3 and phosphor C2 in a mass ratio of 15:60:6.

Among them, the phosphor B3 is BaSi2O2N2 with a luminescent wavelength of 535nm.

The second mixture includes phosphor D, phosphor E and phosphor F in a mass ratio of 40:60:75.

Meanwhile, the film forming method is a film pressing method, the film thickness of the first film layer is 0.13 mm and the first mixture concentration is 40%, and the film thickness of the second film layer is 0.13 mm and the second mixture concentration is 63%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

The details are shown in Figure 8. In the spectrum, the absolute optical power value of 380-435nm purple light is 0.43; the absolute optical power value of 435-475nm blue light is 0.78; the absolute optical power value of 475-492nm cyan light is 1.25; the absolute optical power value of 492-577nm green light is 1.15; the absolute optical power value of 577-597nm yellow light is 1.1; the absolute optical power value of 597-622nm orange light is 1.0; the absolute optical power value of 622-700nm red light is 0.93. The light source spectrum of the high color temperature light source group is full-color bionic, and the approximation between the full-color bionic and the natural light spectrum of the same color temperature is Ai/Bi; where Ai refers to the full-color bionic light source at inm Radiation, Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 93%; when 480nm≤i≤600nm, Ai/Bi is 97%; when 600nm≤i≤700nm, Ai/Bi is 91%.

The method for lighting using the lighting device comprises the following steps: during the lighting process, the color temperature of the light source remains unchanged.

Step 1: Control I1 to the minimum output current, i.e. 0%, and I2 to 63% of the maximum output current, and maintain 100% brightness value of 600 Lux for 18 seconds;

Step 2: Reduce the brightness from 100% to 250 Lux within 1 second. At this time, I1 is the minimum output current, i.e. 0%, and I2 is 26% of the maximum output current. Keep lighting for 2 seconds.

Step 3: The brightness value rises to 100% brightness value within 1 second.

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Example 4

An LED eye protection lighting device comprises a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources;

The control module is used to provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module at the same time; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness.

Specifically, the low color temperature light source group is composed of 18 full-color bionic (single power is 0.5W) white light LED light sources with a color temperature of 2800K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence.

The first film layer includes film-forming material silica gel and a first mixture, and the second film layer includes film-forming material silica gel and a second mixture. The first mixture includes phosphor A2, phosphor B3 and phosphor C2 in a mass ratio of 13:75:10.

Among them, the phosphor B3 is BaSi2O2N2 with a luminescent wavelength of 535nm.

The second mixture includes phosphor D, phosphor E and phosphor F in a mass ratio of 40:60:70.

Meanwhile, the film forming method is a film pressing method, the film thickness of the first film layer is 0.22 mm and the first mixture concentration is 63%, and the film thickness of the second film layer is 0.22 mm and the second mixture concentration is 67%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

In the specific spectrum, the absolute optical power value of 380-435nm purple light is 0.22; the absolute optical power value of 435-475nm blue light is 0.44; the absolute optical power value of 475-492nm cyan light is 0.62; the absolute optical power value of 492-577nm green light is 0.55; the absolute optical power value of 577-597nm yellow light is 0.92; the absolute optical power value of 597-622nm orange light is 0.92; and the absolute optical power value of 622-700nm red light is 0.95. The light source spectrum of the low color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 91%; when 480nm≤i≤600nm, Ai/Bi is 95%; when 600nm≤i≤700nm, Ai/Bi is 90%.

Specifically, the high color temperature light source is composed of 18 full-color bionic white light LED light sources (single power is 0.5W) with a color temperature of 5000K, wherein the fluorescent layer of the full-color bionic white light LED light source includes a first film layer and a second film layer stacked in sequence.

The first film layer includes film-forming material silica gel and a first mixture, and the second film layer includes film-forming material silica gel and a second mixture. The first mixture includes phosphor A2, phosphor B3 and phosphor C2 in a mass ratio of 9:60:7.

Among them, the phosphor B3 is BaSi2O2N2 with a luminescent wavelength of 535nm.

The second mixture includes phosphor D, phosphor E and phosphor F in a mass ratio of 30:55:60.

Meanwhile, the film forming method is a film pressing method, the film thickness of the first film layer is 0.17 mm and the first mixture concentration is 47%, and the film thickness of the second film layer is 0.17 mm and the second mixture concentration is 69%.

The spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90.

In the specific spectrum, the absolute optical power value of 380-435nm purple light is 0.38; the absolute optical power value of 435-475nm blue light is 0.72; the absolute optical power value of 475-492nm cyan light is 1.1; the absolute optical power value of 492-577nm green light is 1.0; the absolute optical power value of 577-597nm yellow light is 0.98; the absolute optical power value of 597-622nm orange light is 0.92; the absolute optical power value of 622-700nm red light is 0.89. The light source spectrum of the high color temperature light source group is a full-color bionic spectrum, and the approximation between the full-color bionic spectrum and the natural light spectrum with the same color temperature is Ai/Bi; wherein Ai refers to the radiation of the full-color bionic light source at inm, and Bi is the radiation of the natural light spectrum with the same color temperature at inm; when 380nm≤i≤480nm, Ai/Bi is 91%; when 480nm≤i≤600nm, Ai/Bi is 98%; when 600nm≤i≤700nm, Ai/Bi is 99%.

The method for lighting using the lighting device comprises the following steps: during the lighting process, the color temperature of the light source remains unchanged.

Step 1: Control I1 to the minimum output current, i.e. 0%, and I2 to 100% of the maximum output current, and maintain the 100% brightness value at 1000 Lux for 8 seconds;

Step 2: Reduce the brightness from 100% to 300 Lux within 0.5 s. At this time, I1 is 0% and I2 is 30% of the maximum output current. Keep lighting for 6 s.

Step 3: The brightness value rises to 100% brightness value within 0.5s;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Comparative Example 1

Compared with Example 1, the illumination is changed to a common LED light source, not a full-color bionic light source, and the same illumination method as Example 1 is adopted.

Among them, the common LED light source has a closeness of 50% to the natural spectrum of the same color temperature, and the optical power of 640-650nm is 0.65; the optical power of 650-660nm is 0.44; the optical power of 660-670nm is 0.36; and the optical power of 670-700nm is 0.21.

Comparative Example 2

Compared with Example 1, the single full-color bionic light source in Example 1 is replaced with the full-spectrum LED disclosed in Example 1 of Chinese Patent CN109860370B, and the same lighting method as Example 1 is adopted. The spectrum comparison is shown in FIG9 .

Comparative Example 3

Compared with Example 1, the same lighting device as Example 1 is used. During the lighting process, the color temperature remains unchanged, and the brightness value is 900 Lux, which remains unchanged.

Comparative Example 4

Compared with Example 1, the same lighting device as Example 1 is used, and the color temperature value remains unchanged during the lighting process. The specific method is:

Step 1, control I1 to the minimum output current, i.e. 0%, and I2 to 95% of the maximum output current, or control I1 to the maximum output current, i.e. 100%, and I2 to the minimum output current, i.e. 0%, and maintain the 100% brightness value at 900 Lux for 12 seconds;

Step 2: Reduce the brightness from 100% to 270 Lux within 0.3 s. At this time, I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current and I2 is 0%. Keep lighting for 4 s.

Step 3: The brightness value rises to 100% brightness value within 0.3s;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Comparative Example 5

Compared with Example 1, the same lighting device as Example 1 is used, and the color temperature value remains unchanged during the lighting process. The specific method is:

Step 1, control I1 to the minimum output current, i.e. 0%, and I2 to 95% of the maximum output current, or control I1 to the maximum output current, i.e. 100%, and I2 to the minimum output current, i.e. 0%, and maintain the 100% brightness value at 900 Lux for 12 seconds;

Step 2: Reduce the brightness from 100% to 270 Lux within 2.8 seconds. At this time, I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current and I2 is 0%. Keep lighting for 4 seconds.

Step 3: After that, the brightness value rises to 100% brightness value within 2.8s;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Comparative Example 6

Compared with Example 1, the raising and lowering times are within the range, but the total time used from step 1 to step 3 is less than 12 s.

Compared with Example 1, the same LED eye protection lighting device as in Example 1 is used, and the color temperature value remains unchanged during the lighting process. The specific method is as follows:

Step 1, control I1 to the minimum output current, i.e. 0%, and I2 to 95% of the maximum output current, or control I1 to the maximum output current, i.e. 100%, and I2 to the minimum output current, i.e. 0%, and maintain the 100% brightness value at 900 Lux for 6 seconds;

Step 2: Reduce the brightness from 100% to 270 Lux within 1 second. At this time, I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current and I2 is 0%. Keep lighting for 2 seconds.

Step 3: The brightness value rises to 100% brightness value within 1 second;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Comparative Example 7

Compared with Example 1, the raising and lowering times are within the range, but the total time used for steps 1 to 3 is higher than 22 s.

Compared with Example 1, the same LED eye protection lighting device as in Example 1 is used, and the color temperature value remains unchanged during the lighting process. The specific method is as follows:

Step 1, control I1 to the minimum output current, i.e. 0%, and I2 to 95% of the maximum output current, or control I1 to the maximum output current, i.e. 100%, and I2 to the minimum output current, i.e. 0%, and maintain the 100% brightness value at 900 Lux for 18 seconds;

Step 2: Reduce the brightness from 100% to 270 Lux within 1 second. At this time, I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current and I2 is 0%. Keep lighting for 4 seconds.

Step 3: The brightness value rises to 100% brightness value within 1 second;

Step 4: Repeat the steps from step 1 to step 3 to perform cyclic lighting.

Comparative Example 8

Compared with Example 1, the illumination is changed to ordinary LED light source, which is not full-color bionic. Among them, the ordinary LED light source has a similarity of 50% to the natural spectrum of the same color temperature, and the light power of 640-650nm is 0.65; the light power of 650-660nm is 0.44; the light power of 660-670nm is 0.36; and the light power of 670-700nm is 0.21.

During the lighting process, the color temperature remains unchanged and the brightness value remains constant at 900Lux.

Test 1

The experimental subjects were selected from some junior high schools in Sichuan. 12 groups were set up, each group contained two classes. There are 48-50 students in each class. In each group, the factors such as the male-to-female ratio, age, myopia and non-myopia distribution of students are statistically significant, and all aspects are basically balanced and comparable. In the classrooms of the 12 groups, the eye protection devices and corresponding lighting methods of Examples 1 to 4 and Comparative Examples 1 to 8 are installed in the same position and number. The specific student conditions are shown in Table 1.

Test conditions: 8:30-11:30 a.m., 2:00-4:30 p.m., and self-study from 7:00-9:00 p.m. every day; during holidays, study no more than 3 hours at night and go to bed after 9 p.m.

During the study period, students should take a short break of 15 minutes every 45 minutes in class or study and go out for activities.

The test period was 24 weeks, and the changes in visual acuity are shown in Table 3. In Table 3, the effective rate is the percentage of eyes with decreased diopter.

After 6 months, the subjects were asked to rate their eye fatigue, with high eye fatigue being rated as low and high eye comfort being rated as high.

High score, set the standard of 0-10 points, where 10 points means high eye comfort, 0 points means poor eye comfort, the higher the score, the higher the eye comfort, the test results are shown in Table 3. In Table 3, the effective rate is the proportion of eyes with reduced degree.

Among them, in Table 2, the visual acuity of highly myopic eyes is above 600 degrees, the visual acuity of moderate myopic eyes is between 300 degrees and 600 degrees, and the visual acuity of mild myopic eyes is below 300 degrees.

Table 2

table 3

From the test results of Table 3, Examples 1-4 adopt the technical solution of the present application, and the score of relieving eye fatigue can reach 9.6 points. The treatment efficiency of moderate and high myopia and mild myopia eyes reaches 100%, and the maximum can be reduced by 200 degrees. By adjusting the illumination source and the method of changing the brightness value of the light source during the illumination process, the brightness is changed by mimicking ecology under the illumination of excellent light sources, so as to achieve the "reset" of the active adjustment of the eye axis function of the human eye, which makes people blink unconsciously, and the active adjustment of the eye axis conforms to the visual habits, so as to achieve the effect of protecting the eyes, relieving eye fatigue, and reducing or preventing myopia. Comparative Examples 1-Comparative Examples 7 do not adopt the full-color bionic light source of the present application or the lighting method of the present application, and the effect of relieving eye fatigue is significantly reduced. Some eyes will also produce the phenomenon of increased degree, and it is impossible to achieve a good effect of reducing or preventing myopia. It can be seen from the test data of Comparative Example 8 that only conventional illumination sources and conventional lighting methods are used, and the degree of the eyes will increase to varying degrees, and non-myopic eyes will turn into myopic eyes, and the technical effect is poor.

The LED eye protection lighting method disclosed in the present application first adopts a full-color bionic light source as the lighting source, the spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve of the light source is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1~R15 are all greater than 90; the spectrum of the lighting source is shaped It forms a mode of existence of high-saturation red light and high-saturation cyan light. According to the imaging principle of color on the retina, the full-color bionic light source helps to adjust the focal length and eye axis of vision during visual imaging, realizes visual imaging of objects to restore the color, ensures high adaptability and comfort of vision, and effectively relieves eye fatigue under lighting. At the same time, the lighting method provided by the present application includes the following steps: step 1, maintain 100% brightness value, and illuminate for 6s to 18s; step 2, from 100% brightness value within 0.5s to 2s, reduce to 25% to 45% brightness value, and maintain lighting for 2s to 6s; step 3, then the brightness value rises to 100% brightness value within 0.5s to 2s; step 4, repeat the steps of step 1 to step 3, and perform cyclic lighting; wherein the duration of step 1 to step 3 is 12s to 22s. During the entire lighting process, the color temperature of the light source remains unchanged, and the switching from high brightness to low brightness and from low brightness to high brightness is completed within a specific time. The brightness value is gradually changed in a cycle, turning static light into dynamic light, and at the same time avoiding visual adaptation. By specifically adjusting the lighting source and the method of changing the brightness value of the light source during the lighting process, under the illumination of excellent light sources, the brightness is changed in an ecological way to "reset" the human eye's active adjustment of the eye axis, making people blink unconsciously, and actively adjusting the eye axis in accordance with visual habits, thereby protecting the eyes, alleviating eye fatigue, and reducing and preventing myopia.

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

Claims (15)

1. A method for using LED eye protection lighting, characterized in that the lighting light source adopts a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum whose radiation power distribution curve of the light source is 95%±5% similar to the natural spectrum of the same color temperature, and the spectral color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are all greater than 90; during the lighting process, the color temperature of the light source remains unchanged; the method for using eye protection lighting comprises the following steps:

   Step 1: Maintain 100% brightness for 6s to 18s;

   Step 2: Reduce the brightness from 100% to 25% to 45% within 0.5s to 2s, and keep lighting for 2s to 6s;

   Step 3: After that, the brightness value rises to 100% brightness value within 0.5s to 2s;

   Step 4, repeat the steps 1 to 3 to perform cyclic lighting; wherein each cycle of steps 1 to 3 takes 12s to 22s.
2. The method for using LED eye protection lighting according to claim 1 is characterized in that, in the spectrum of the full-color bionic light source, the approximation of the light source radiation power distribution curve and the natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiation amount of the full-color bionic light source at inm, and Bi is the radiation amount of the natural light spectrum with the same color temperature at inm; Ai/Bi=90%~100%, wherein 380nm≤i≤700nm.
3. The method for using LED eye protection lighting according to claim 2 is characterized in that when 380nm≤i≤480nm, Ai/Bi is 90% to 95%; when 480nm≤i≤600nm, Ai/Bi is 95% to 100%; when 600nm≤i≤700nm, Ai/Bi is 90% to 100%.
4. The method for using LED eye protection lighting according to claim 3 is characterized in that in step 1, the brightness value is maintained at 100% and the lighting time is 6s to 16s.
5. The method for using LED eye protection lighting according to claim 4 is characterized in that in step 2, the brightness value is reduced from 100% to 25% to 45% within 0.5s to 1.5s, and the lighting is maintained for 2s to 5s.
6. The method for using LED eye protection lighting according to claim 5 is characterized in that, in step 3, the brightness value rises to 100% brightness value within 0.5s to 1.5s.
7. The method for using LED eye protection lighting according to claim 6 is characterized in that the total time used for steps 1 to 3 is 12s to 20s.
8. The method for using LED eye protection lighting according to any one of claims 1 to 7 is characterized in that a brightness value of 100% is not less than 600 Lux, and a brightness value of 25% to 45% is not greater than 400 Lux.
9. The method for using LED eye protection lighting according to claim 8 is characterized in that the brightness value of 100% is not less than 800 Lux, and the brightness value of 25% to 45% is not greater than 300 Lux.
10. A device used in the method for using LED eye protection lighting as described in any one of claims 1 to 9, characterized in that it comprises a control module, a driving power module and a light source group module; the light source group module comprises a low color temperature light source group and a high color temperature light source group, the driving power module is electrically connected to the low color temperature light source group and the high color temperature light source group respectively; the low color temperature light source group and the high color temperature light source group are both full-color bionic light sources;

    The control module is used to provide the current I1 magnitude signal of the low color temperature light source group and the current I2 magnitude signal of the high color temperature light source group to the driving power module at the same time; the driving power module is used to generate driving currents I1 and I2 according to the received current I1 magnitude signal and current I2 magnitude signal to drive the low color temperature light source group and the high color temperature light source group respectively, thereby realizing the change of lighting brightness.
11. The device used in the method for using LED eye protection lighting according to claim 10 is characterized in that it also includes an infrared The remote controller includes an infrared receiving device, and the infrared receiving device is used to receive the remote control signal of the infrared remote controller. According to the remote control signal, the control module generates a current I1 magnitude signal and a current I2 magnitude signal.
12. The device used in the method for using LED eye protection lighting according to claim 11 is characterized in that the control module also includes a light sensor.
13. The device used in the method for using LED eye protection lighting according to claim 12 is characterized in that the low color temperature light source group is composed of a plurality of low color temperature full-color bionic light sources connected in series, in parallel, or in series and parallel, and the high color temperature light source group is composed of a plurality of high color temperature full-color bionic light sources connected in series, in parallel, or in series and parallel.
14. The device used in the method for using LED eye protection lighting according to claim 13 is characterized in that the color temperature value of the low color temperature light source group and the color temperature value of the high color temperature light source group are two different color temperature values between 2700K and 5600K.
15. The device used in the method for using LED eye protection lighting according to claim 14 is characterized in that the color temperature value of the low color temperature light source group and the color temperature value of the high color temperature light source group are respectively located in any two ranges of 2700K~3000K, 4000K~4200K, 4700K~5200K and 5500K~6000K.