CN115499965B

CN115499965B - LED eye-protecting lighting use method and device

Info

Publication number: CN115499965B
Application number: CN202211453530.2A
Authority: CN
Inventors: 杨小琴; 曾胜; 曾骄阳; 陈华; 李刚; 陈道蓉; 曾小东
Original assignee: Sichuan Century Heguang Technology Development Co ltd
Current assignee: Sichuan Century Heguang Technology Development Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-02-28
Anticipated expiration: 2042-11-21
Also published as: CN115499965A

Abstract

The invention provides an LED eye-protecting illumination use method and a device thereof, wherein the illumination light source adopts a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum of the same color temperature reaching 95% +/-5%, the spectrum color rendering index of the full-color bionic light source is more than 95, and R1-R15 are all more than 90; in the lighting process, the color temperature of the light source is unchanged, the switching from high brightness to low brightness and the switching from low brightness to high brightness are completed within a specific time, static light is changed into dynamic light, the self-adaption of vision can be avoided, the brightness of the light source in the lighting process is changed in a bionic manner by adjusting the lighting source and the light source brightness value change method in a targeted manner under the excellent lighting of the light source, the function of resetting the eye axis of the human eye to actively adjust is realized, the human eye blinks unconsciously, the eye axis is actively adjusted to accord with the vision habit, and therefore the effects of protecting the eye, relieving the fatigue of the eye and reducing or preventing myopia can be achieved.

Description

LED eye-protecting lighting use method and device

Technical Field

The invention relates to the field of eye protection illumination, in particular to an LED eye protection illumination using method and an LED eye protection illumination device.

Background

The human eye is formed and evolved in a natural lighting environment, and the adaptability of vision to natural light is irreplaceable. As shown in fig. 1, when the eye looks at pure blue light, the eye may look wide and the image of the blue light falls on the retina; when the eyes see pure red light, the eyes can see a little bit unnaturally, so that the red light image is on the retina. The problems of lack of red light spectrum and overhigh blue light spectrum amount exist in the common artificial lighting spectrum, and after the artificial lighting spectrum is used for a long time, the artificial lighting spectrum can not only damage a macular area of retina, but also easily cause eye fatigue to form myopia.

At present, full spectrum illumination is widely focused on due to the fact that blue light quantity is reduced in the spectrum, and red light spectrum is increased. However, the common full spectrum in the prior art still has the problems of more blue light spectral quantity and less red light spectral quantity, and the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature in the full spectrum can only reach about 80 percent at most. The red light can stimulate long-wave sensitive cone cells, slow down axial elongation, prevent animals from moving from hyperopia to emmetropia, and enable eyes to keep hyperopia all the time. The most significant anatomical changes are the decrease in vitreous chamber elongation, the anterior movement of the retina towards the cornea, the increase in choroidal thickness, and the anterior movement of the retina, which in part will produce a pronounced response to optical focusing. When the red light is applied to the emmetropic eye, the hypermetropia effect generated by the red light can delay the continuous extension of the eye axis, and the effect of preventing the development of myopia is achieved. Therefore, the strengthening of the red light spectrum in the full spectrum and the weakening of the blue light spectrum have very important significance for reducing eye fatigue and preventing myopia.

Furthermore, when the eyes of people are reading or writing, people often focus on the object to be viewed, so that after long-time vision, the eyes are fixed in focus for a long time, the eyes are easy to be fatigued, and especially in the luminescent light color, when the red light spectrum is lost, the long-time vision object of the eyes is easy to cause the elongation of the axis of the eyes, and the myopia is caused. In order to solve the above problems, for example, chinese patent CN108743268A discloses glasses for training eyeball muscles with light intensity to prevent and treat myopia or presbyopia and a using method thereof, and discloses a principle of spectrum adjusting axis to prevent and treat myopia and hypermetropia, but the scheme is similar to the function of a light-feeding instrument, adopts a combination of a plurality of white light sources to realize natural spectrum, and has the fundamental problem that the red light spectrum is absent, and visual real imaging of the object with color reduction cannot be realized. In addition, the journal, "short-term influence of full spectrum white light with different illumination intensities on the eye axis of a human body", in Sichuan medicine 2020.01.24 ", discloses a conclusion that full spectrum white light with different intensities has influence on the eye axis. But neither discloses how to adjust the brightness to achieve active eye axis adjustment and does not create an adaptive situation for the human eye. Therefore, it is very important to develop an eye protection illumination method which can well realize the method of adjusting the eye axis according with the visual habit to protect the eyes, relieve the eye fatigue and reduce or prevent the myopia.

Disclosure of Invention

The invention aims to: aiming at the technical problems that the prior illumination technology of eyes can not well realize the method of adjusting the eye axis according with the vision habit to protect the eyes, relieve the eye fatigue and prevent the myopia when the eyes read or write, the invention provides the LED eye protection illumination using method and the device thereof.

In order to achieve the purpose, the invention adopts the technical scheme that:

an LED eye-protecting illumination use method, the illumination light source adopts a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature reaching 95% +/-5%, the spectrum color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are both greater than 90; in the lighting process, the color temperature of the light source is unchanged; the use method of the eye-protecting lighting comprises the following steps:

step 1, keeping a 100% brightness value, and illuminating for 6-18 s;

step 2, reducing the brightness value of 100% to 25% -45% within 0.5-2 s, and keeping illumination for 2-6 s;

step 3, increasing the brightness value to 100% within 0.5 s-2 s;

step 4, repeating the steps from step 1 to step 3, and performing circulating illumination; wherein the time length used for circulating the steps 1 to 3 is 12s to 22s.

The invention discloses an LED eye-protecting illumination use method, which comprises the steps that firstly, an adopted illumination light source is a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum of the same color temperature reaching 95 +/-5%, the spectrum color rendering index of the full-color bionic light source is more than 95, and the color rendering indexes R1-R15 are all more than 90; the spectrum of the illumination light source forms the existence mode of red light with high saturation and cyan light with high saturation, and according to the imaging principle of colors on the retina, when the panchromatic bionic light source is used for illumination and is beneficial to visual imaging, the focal length of vision and the adjustment of an eye axis realize visual imaging for restoring the color of an object, the high adaptability and the comfort of vision are ensured, and the eye fatigue under illumination is effectively relieved. Meanwhile, the illumination method provided by the application comprises the following steps: step 1, keeping a 100% brightness value, and illuminating for 6-18 s; step 2, reducing the brightness value from 100% to 25% -45% within 0.5-2 s, and keeping illumination for 2-6 s; step 3, increasing the brightness value to 100% within 0.5 s-2 s; step 4, repeating the steps from the step 1 to the step 3, and performing circulating illumination; wherein the time from step 1 to step 3 is 12 s-22 s. In the whole lighting process, the color temperature of the light source is unchanged, the switching from high brightness to low brightness and the switching from low brightness to high brightness are completed within a specific time, the brightness value is changed in a cyclic gradual change mode, static light is changed into dynamic light, the self-adaption of vision can be avoided, the brightness value change method of the lighting light source and the light source in the lighting process is adjusted in a targeted mode, the brightness is changed in a simulated ecological mode under the excellent light source lighting, the function of resetting the eye axis of a person to actively adjust the eye axis is achieved, the person can blink unconsciously, the eye axis is actively adjusted to accord with the vision habit, and therefore the effects of protecting the eyes, relieving the eye fatigue and relieving or preventing myopia can be achieved.

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

Furthermore, in the spectrum of the full-color bionic light source, the approximation degree of the light source radiation power distribution curve and natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; ai/Bi =90% -100%, wherein i is more than or equal to 380nm and less than or equal to 700nm.

Furthermore, when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 90-95 percent; when i is not less than 480nm and not more than 600nm, ai/Bi is 95-100 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 90-100%.

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

Further, in the step 2, the brightness value is reduced from 100% within 0.5s to 1.5s to 25% -45% and the illumination is kept for 2s to 5s. Researches find that the time for reducing the high brightness value to the low brightness value and the illumination time of the low brightness value are key factors for realizing the purpose that a person blinks unconsciously and actively adjusts the axis of the eyes, and under the synergistic effect of the reasonable selection range of the low brightness value, the eye comfort level can be effectively improved, the eye fatigue can be relieved, the eyes can be protected, and the effect of reducing or preventing the myopia can be realized. The high brightness value is adjusted to the low brightness value too fast, a self-adaptive effect can be generated on eyes, the eyes cannot adjust the eye axis, the eye axis cannot be changed due to the fact that human vision changes or is switched between light and dark light, the self-adaptive time length of the vision or the self-adaptive conditioned reflex of the vision on external perception can result in the fact that the eye axis cannot be changed, active adjustment of the eye axis cannot be achieved, eye fatigue cannot be relieved, and the effect of reducing or preventing myopia is achieved. However, if the high brightness value is adjusted to the low brightness value too slowly, the effect of converting static light into dynamic light cannot be achieved, the effect of relieving eye fatigue is obviously poor, and a good eye protection effect cannot be achieved. In the step 2, the time for reducing the high brightness value to the low brightness value may be 0.5s;0.6s;0.7s;0.8s;0.9s;1s;1.1s;1.2s;1.3s;1.4s;1.5s. In the step 2, the illumination time with a low brightness value can be 2s,3s;4s,5s.

Further, in the step 3, the brightness value is increased to 100% brightness value within 0.5s to 1.5s. Researches show that the time for reducing the low brightness value to the high brightness value and the illumination time of the high brightness value are key factors for realizing the involuntary blinking of people and actively adjusting the eye axis, and the key factors are necessary conditions for effectively improving the comfort degree of eyes, relieving eye fatigue, protecting eyes and realizing the reduction or prevention of myopia. The low brightness value is adjusted to the high brightness value too fast, a self-adaptive effect can be generated on eyes, the eyes cannot adjust the eye axis, the eye axis cannot be changed due to the fact that human vision is changed or switched between light and dark light, the self-adaptive time length of the vision or the self-adaptive conditioned reflex of the vision on external perception can result in the fact that the eye axis cannot be changed, active adjustment of the eye axis cannot be achieved, eye fatigue cannot be relieved, and the effect of reducing or preventing myopia is achieved. However, if the low brightness value is adjusted to the high brightness value too slowly, the effect of converting static light into dynamic light cannot be achieved, the effect of relieving eye fatigue is obviously poor, and a good eye protection effect cannot be achieved. For example, in step 3, the time for the low luminance value to rise to the high luminance value may be 0.5s;0.6s;0.7s;0.8s;0.9s;1s;1.1s;1.2s;1.3s;1.4s;1.5s.

Further, the time duration from step 1 to step 3 is 12s to 20s in total. Research finds that even if the switching time in the brightness conversion process is met, the total time in the whole brightness adjustment process is also a key factor influencing the eye protection effect, the time in the whole brightness adjustment process is not easy to overlong or too short, otherwise, the eye comfort level can be obviously reduced, and the myopia is reduced or prevented badly. For example, the time period used in the steps 1 to 3 is 12s;13s;14s;15s;16s;17s;18s;19s; and 20s.

Furthermore, the brightness value of 100% is not less than 600Lux, and the brightness value of 25% -45% is not more than 400Lux. The proper brightness is selected, so that the comfort of people can be improved, and the fatigue of eyes can be relieved. Preferably, the brightness value of 100% is not less than 800Lux, and the brightness value of 25% to 45% is not more than 300Lux. More preferably, the brightness value of 100% is not less than 800Lux, and the brightness value of 25% to 45% is 150 to 300Lux.

The invention also aims to provide the LED eye-protection lighting device used in the lighting method.

An LED eye-protecting and illuminating 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, and the driving power supply module is electrically connected with 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 all full-color bionic light sources;

the control module is used for simultaneously providing a current I1 signal of the low color temperature light source group and a current I2 signal of the high color temperature light source group to the driving power supply module; the driving power supply module is used for generating driving currents I1 and I2 according to the received current I1 size signal and the received current I2 size signal to respectively drive the low color temperature light source group and the high color temperature light source group, and therefore the change of the illumination brightness is achieved.

The application provides an LED eye-protecting lighting device which 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, and the driving power supply module is electrically connected with 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 all full-color bionic light sources; the control module is used for simultaneously providing a current I1 signal of the low color temperature light source group and a current I2 signal of the high color temperature light source group to the driving power supply module; the driving power supply module is used for generating driving currents I1 and I2 according to the received current I1 size signal and the received current I2 size signal to respectively drive the low color temperature light source group and the high color temperature light source group, so that the change of illumination brightness is realized. The utility model discloses a device of LED eyeshield illumination realizes the change of illumination luminance through the electric current size of adjusting high color temperature light source group and low color temperature light source group simultaneously, when making the luminance on the object surface of being looked produce minimum change, can lead to the involuntary passive blink of people's eye, eyeball focus independently, resets to reach the initiative and adjust the eye axis, prevent that the eye axis from lengthening.

The control module comprises an infrared receiving device, the infrared receiving device is used for receiving a remote control signal of the infrared remote controller, and the control module generates a current I1 signal and a current I2 signal according to the remote control signal.

Further, the control module further comprises a light sensor.

Furthermore, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature reaching 95 +/-5%, the spectral color rendering index of the full-color bionic light source is larger than 95, and R1-R15 are larger than 90.

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

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 two different color temperature values in 2700K-5600K.

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 respectively positioned at any two zone color temperature values of 2700K-3000K, 4000K-4200K, 4700K-5200K and 5500K-6000K. Preferably, the color temperature value of the low color temperature light source set is any one of 2700K to 3000K, and the color temperature value of the high color temperature light source set is any one of 5500K to 6000K.

Further, when the color temperature of the full-color bionic light source is 2700K-3000K, the absolute light power value of violet light of 380-435 nm in the spectrum of the full-color bionic light source is less than 0.35; the absolute light power value of the blue light with the wavelength of 435 to 475nm is more than 0.40; the absolute light power value of the green light of 475 to 492nm is more than 0.45; the absolute light power value of green light with the wavelength of 492 to 577nm is more than 0.50; the absolute light power value of 577 to 597nm yellow light is more than 0.75; the absolute light power value of orange light of 597-622nm is more than 0.80; the absolute light power value of 622 to 700nm red light is more than 0.80.

Further, when the color temperature of the full-color bionic light source is 4000K-4200K, the absolute light power value of violet light of 380-435 nm in the spectrum of the full-color bionic light source is less than 0.40; the absolute light power value of the blue light with the wavelength of 435 to 475nm is less than 0.65; the absolute luminous power value of green light of 475 to 492nm is more than 0.60; the absolute light power value of green light with the wavelength of 492 to 577nm is more than 0.65; the absolute light power value of the 577 to 597nm yellow light is more than 0.80; the absolute light power value of orange light with the wavelength of 597-622nm is more than 0.8; the absolute luminous power value of 622 to 700nm red light is more than 0.80.

Further, when the color temperature of the full-color bionic light source is 5500K-6000K, the absolute light power value of violet light of 380-435 nm in the spectrum of the full-color bionic light source is less than 0.45; the absolute light power value of the blue light with the wavelength of 435 to 475nm is less than 0.80; the absolute light power value of the green light of 475 to 492nm is more than 0.70; the absolute light power value of green light with the wavelength of 492 to 577nm is more than 0.80; the absolute light power value of the 577 to 597nm yellow light is more than 0.80; the absolute light power value of orange light of 597-622nm is more than 0.80; the absolute light power value of 622 to 700nm red light is more than 0.70.

Spectral power: the spectrum emitted by a light source is often not a single wavelength, but consists of a mixture of many different wavelengths of radiation. The spectral radiation of a light source in wavelength order and the intensity distribution of the individual wavelengths is referred to as the spectral power distribution of the light source.

The parameters for representing the magnitude of the spectral power are divided into absolute spectral power and relative spectral power, and then an absolute spectral power distribution curve: curves drawn with absolute values of the energy of various wavelengths of the spectral radiation.

Relative spectral power distribution curve: the spectral power distribution curve is a spectral power distribution curve that compares energies of various wavelengths of a light source radiation spectrum with each other, and changes radiation power only within a predetermined range after normalization processing. The relative spectral power with the maximum radiation power is 1, and the relative spectral power of other wavelengths is less than 1.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the invention discloses an LED eye-protecting illumination use method, which comprises the steps that firstly, an adopted illumination light source is a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature reaching 95 +/-5%, the spectrum color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are both greater than 90; the existence mode of the red light with high saturation and the cyan light with high saturation is formed in the spectrum of the illumination light source, according to the imaging principle of the color on the retina, when the panchromatic bionic light source is used for visual imaging during illumination, the focal length of the vision and the adjustment of the eye axis realize visual imaging for restoring the color of an object, the high adaptability and the comfort of the vision are ensured, and the eye fatigue under illumination is effectively relieved. Meanwhile, the illumination method provided by the application comprises the following steps: step 1, keeping a 100% brightness value, and illuminating for 6-18 s; step 2, reducing the brightness value of 100% to 25% -45% within 0.5-2 s, and keeping illumination for 2-6 s; step 3, increasing the brightness value to 100% within 0.5 s-2 s; step 4, repeating the steps from step 1 to step 3, and performing circulating illumination; wherein the time from step 1 to step 3 is 12 s-22 s. In the whole lighting process, the color temperature of the light source is unchanged, the switching from high brightness to low brightness and the switching from low brightness to high brightness are completed within a specific time, the brightness value is changed in a cyclic gradual change mode, static light is changed into dynamic light, the self-adaption of vision can be avoided, the fatigue of eyes can be relieved by 9.6 minutes through adjusting the lighting light source and the light source brightness value change method in the lighting process in a targeted mode, the treatment effective rate of eyes with middle-high myopia and light myopia reaches 100%, the maximum degree can be reduced by 200 degrees, under the excellent light source lighting, the brightness is changed in a simulated ecological mode, the function of 'resetting' of the eye axis of a human is achieved, people can blink unconsciously, the eye axis of the human is adjusted actively to accord with the vision habit, and the effects of protecting the eyes, relieving the fatigue of the eyes and relieving and preventing the myopia can be achieved.

2. The application provides an LED eye-protecting lighting device which 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, and the driving power supply module is electrically connected with 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 all full-color bionic light sources; the control module is used for simultaneously providing a current I1 signal of the low color temperature light source group and a current I2 signal of the high color temperature light source group to the driving power supply module; the driving power supply module is used for generating driving currents I1 and I2 according to the received current I1 size signal and the received current I2 size signal to respectively drive the low color temperature light source group and the high color temperature light source group, so that the change of illumination brightness is realized. The utility model discloses a device of LED eyeshield illumination realizes the change of illumination luminance through the electric current size of adjusting high color temperature light source group and low color temperature light source group simultaneously, when making the luminance on the object surface seen produce minimum change, can lead to the involuntary passive blink of people's eye, eyeball focus independently, resets to reach the initiative and adjust the eye axis, prevent that the eye axis is prolonged.

Drawings

FIG. 1 is a schematic diagram of a structure in which different colors of light fall on the retina.

Fig. 2 is a schematic structural diagram of the LED eye-protecting lighting device.

Fig. 3 is a schematic structural diagram of the driving power module and the light source module.

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

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

Fig. 6 is a spectrum diagram of the low color temperature light source set in embodiment 2.

Fig. 7 is a spectrum diagram of the high color temperature light source set in embodiment 2.

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

FIG. 9 shows the chromatogram of the light source of comparative example 2 (top panel) and the spectrum of the low color temperature light source set of example 3 (bottom panel).

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

Example 1

As shown in fig. 2 and 3, an LED eye-protecting lighting device includes a control module, a driving power module, and a light source 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 supply module is electrically connected with 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 all full-color bionic light sources;

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

Specifically, the low color temperature light source group comprises 18 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 2700K, and a fluorescent layer of the panchromatic bionic white light LED light source comprises a first film layer, a second film layer and a third film layer which are sequentially stacked. The first film layer comprises first fluorescent powder and film-forming material silica gel, the second film layer comprises second fluorescent powder and film-forming material silica gel, and the third film layer comprises third fluorescent powder and film-forming material silica gel. The mass ratio of the first fluorescent powder to the second fluorescent powder to the third fluorescent powder is 20:40:35.

the first fluorescent powder comprises fluorescent powder A2, and the fluorescent powder A2 is Y3 (Al, ga) 5O12 with the light-emitting wavelength of 490 nm.

The second fluorescent powder comprises fluorescent powder B1 and fluorescent powder B2, wherein the fluorescent powder B1 is BaSi2O2N2 with the light-emitting wavelength of 525nm, and the fluorescent powder B2 is BaSi2O2N2 with the light-emitting wavelength of 540 nm. The mass ratio of the phosphor B1 to the phosphor B2 is 55.

The third fluorescent powder comprises fluorescent powder C1, fluorescent powder C2, fluorescent powder C3, fluorescent powder D, fluorescent powder E and fluorescent powder F. The phosphor C1 is (Ca, sr) AlSiN3 with the light-emitting wavelength of 630nm, the phosphor C2 is (Ca, sr) AlSiN3 with the light-emitting wavelength of 660nm, the phosphor C3 is (Ca, sr) AlSiN3 with the light-emitting wavelength of 679nm, the phosphor D is (Ca, sr) AlSiN3 with the light-emitting wavelength of 720nm, the phosphor E is (Ca, sr) AlSiN3 with the light-emitting wavelength of 740nm, and the phosphor F is (Ca, sr) AlSiN3 with the light-emitting wavelength of 795 nm. The mass ratio of the fluorescent powder C1 to the fluorescent powder C2 to the fluorescent powder C3 to the fluorescent powder D to the fluorescent powder E to the fluorescent powder F is 9:13:16:21:23:27.

meanwhile, the film formation method is a film pressing method. The film thickness of the first film layer is 0.13mm and the first phosphor concentration is 61%, the film thickness of the second film layer is 0.13mm and the second phosphor concentration is 61%, and the film thickness of the third film layer is 0.13mm and the third phosphor concentration is 61%.

The spectrum of the panchromatic bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature reaching 95 +/-5%, the spectral color rendering index of the panchromatic bionic light source is larger than 95, and R1-R15 are all larger than 90.

Specifically, as shown in FIG. 4, the absolute light power value of violet light of 380 to 435nm is 0.15; the absolute light power value of 435 to 475nm blue light is 0.42; the absolute light power value of the green light of 475 to 492nm is 0.48; the absolute luminous power value of green light of 492 to 577nm is 0.52; the absolute light power value of yellow light of 577 to 597nm is 0.78; the absolute light power value of orange light with the wavelength of 597-622nm is 0.85; the absolute luminous power value of 622 to 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 degree of the full-color bionic spectrum and the spectrum of the natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 90 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 95 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 90 percent.

Specifically, the high color temperature light source consists of 18 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 5600K, and a fluorescent layer of the panchromatic bionic white light LED light source comprises a first film layer, a second film layer and a third film layer which are sequentially stacked. The first film layer comprises first fluorescent powder and film-forming material silica gel, the second film layer comprises second fluorescent powder and film-forming material silica gel, and the third film layer comprises third fluorescent powder and film-forming material silica gel. The mass ratio of the first fluorescent powder to the second fluorescent powder to the third fluorescent powder is 15:50:15.

The second fluorescent powder comprises fluorescent powder B1 and fluorescent powder B2, wherein the fluorescent powder B1 is BaSi2O2N2 with the light-emitting wavelength of 525nm, and the fluorescent powder B2 is BaSi2O2N2 with the light-emitting wavelength of 540 nm. The mass ratio of the phosphor B1 to the phosphor B2 was 20.

The third fluorescent powder comprises fluorescent powder C1, fluorescent powder C2, fluorescent powder C3, fluorescent powder D, fluorescent powder E and fluorescent powder F. The phosphor C1 is (Ca, sr) AlSiN3 with the light-emitting wavelength of 630nm, the phosphor C2 is (Ca, sr) AlSiN3 with the light-emitting wavelength of 660nm, the phosphor C3 is (Ca, sr) AlSiN3 with the light-emitting wavelength of 679nm, the phosphor D is (Ca, sr) AlSiN3 with the light-emitting wavelength of 720nm, the phosphor E is (Ca, sr) AlSiN3 with the light-emitting wavelength of 740nm, and the phosphor F is (Ca, sr) AlSiN3 with the light-emitting wavelength of 795 nm. The mass ratio of the fluorescent powder C1 to the fluorescent powder C2 to the fluorescent powder C3 to the fluorescent powder D to the fluorescent powder E to the fluorescent powder F is 6:7:11:13:16:17.

meanwhile, the film forming method is a film pressing method, the film thickness of the first film layer is 0.11mm and the first phosphor concentration is 67%, the film thickness of the second film layer is 0.11mm and the second phosphor concentration is 67%, and the film thickness of the third film layer is 0.11mm and the third phosphor concentration is 67%.

The spectrum of the panchromatic bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature reaching 95 +/-5%, the spectrum color rendering index of the panchromatic bionic light source is larger than 95, and R1-R15 are all larger than 90.

Specifically, as shown in FIG. 5, the absolute light power value of violet light of 380 to 435nm is 0.40; the absolute light power value of the blue light with the wavelength of 435 to 475nm is 0.75; the absolute light power value of 475 to 492n green light is 0.72; the absolute luminous power value of green light of 492-577nm is 0.83; the absolute light power value of yellow light of 577 to 597nm is 0.82; the absolute light power value of orange light with the wavelength of 597-622nm is 0.85; the absolute luminous power value of 622 to 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 degree of the full-color bionic light source and the spectrum of the natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiant quantity of a full-color bionic light source at inm, and Bi refers to the radiant quantity of a natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 95 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 100 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 100 percent.

The method for illuminating by adopting the illuminating device comprises the following steps: and in the lighting process, the color temperature of the light source is unchanged.

Step 1, controlling I1 to be 0% of minimum output current and I2 to be 95% of maximum output current, or controlling I1 to be 100% of maximum output current and I2 to be 0% of minimum output current, keeping the 100% brightness value to be 900Lux, and illuminating for 12s;

step 2, reducing the brightness value from 100% to within 0.8s to 270 Lux, wherein I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current, I2 is 0%, and illumination is kept for 4s;

step 3, increasing the brightness value to 100% within 0.8s;

and 4, repeating the steps from the step 1 to the step 3, and performing circulating illumination.

In the practical application process of the two groups of light source groups, the specific parameter change table of the dimming and color mixing part is shown in table 1. The current proportion of the two white light modules is fixed, and the current of each white light module is adjusted to realize different brightness output.

TABLE 1

Example 2

Specifically, the low color temperature light source group comprises 18 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 3000K, and a fluorescent layer of the panchromatic bionic white light LED light source comprises a first film layer, a second film layer and a third film layer which are sequentially stacked. The first film layer comprises first fluorescent powder and film-forming material silica gel, the second film layer comprises second fluorescent powder and film-forming material silica gel, and the third film layer comprises third fluorescent powder and film-forming material silica gel. The mass ratio of the first fluorescent powder to the second fluorescent powder to the third fluorescent powder is 20:50:35.

The second fluorescent powder comprises fluorescent powder B1 and fluorescent powder B2, wherein the fluorescent powder B1 is BaSi2O2N2 with the light-emitting wavelength of 525nm, and the fluorescent powder B2 is BaSi2O2N2 with the light-emitting wavelength of 540 nm. The mass ratio of the fluorescent powder B1 to the fluorescent powder B2 is 55:50.

the third fluorescent powder comprises fluorescent powder C1, fluorescent powder C2, fluorescent powder C3, fluorescent powder D, fluorescent powder E and fluorescent powder F. Phosphor C1 is (Ca, sr) AlSiN3 with a luminescence wavelength of 630nm, phosphor C2 is (Ca, sr) AlSiN3 with a luminescence wavelength of 660nm, phosphor C3 is (Ca, sr) AlSiN3 with a luminescence wavelength of 679nm, phosphor D is (Ca, sr) AlSiN3 with a luminescence wavelength of 720nm, phosphor E is (Ca, sr) AlSiN3 with a luminescence wavelength of 740nm, and phosphor F is (Ca, sr) AlSiN3 with a luminescence wavelength of 795 nm. The mass ratio of the fluorescent powder C1 to the fluorescent powder C2 to the fluorescent powder C3 to the fluorescent powder D to the fluorescent powder E to the fluorescent powder F is 9:12:15:20:21:25.

meanwhile, the film forming method is a film spraying method, the film thickness of the first film layer is 0.004mm, the concentration of the first fluorescent powder is 67%, the film thickness of the second film layer is 0.004mm, the concentration of the second fluorescent powder is 67%, and the film thickness of the third film layer is 0.004mm, and the concentration of the third fluorescent powder is 67%.

The spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum with the same color temperature reaching 95 +/-5%, the spectral color rendering index of the full-color bionic light source is larger than 95, and R1-R15 are all larger than 90.

As shown in detail in fig. 6. The absolute light power value of violet light of 380 to 435nm is 0.33; the absolute light power value of the blue light with the wavelength of 435 to 475nm is 0.48; the absolute light power value of the green light of 475 to 492nm is 0.8; the absolute luminous power value of green light of 492 to 577nm is 0.9; the absolute light power value of yellow light of 577 to 597nm is 1.13; the absolute light power value of orange light with the wavelength of 597-622nm is 1.2; the absolute luminous power value of 622 to 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 degree of the full-color bionic light source and the spectrum of the natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 93 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 98 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 97 percent.

Specifically, the high color temperature light source consists of 18 full-color bionic (single power is 0.5W) white light LED light sources, the color temperature is 4200K, and a fluorescent layer of the full-color bionic white light LED light source comprises a first film layer, a second film layer and a third film layer which are sequentially stacked. The first film layer comprises first fluorescent powder and film-forming material silica gel, the second film layer comprises second fluorescent powder and film-forming material silica gel, and the third film layer comprises third fluorescent powder and film-forming material silica gel. The mass ratio of the first fluorescent powder to the second fluorescent powder to the third fluorescent powder is 20:70:25.

The second fluorescent powder comprises fluorescent powder B1 and fluorescent powder B2, wherein the fluorescent powder B1 is BaSi2O2N2 with the light-emitting wavelength of 525nm, and the fluorescent powder B2 is BaSi2O2N2 with the light-emitting wavelength of 540 nm. The mass ratio of the phosphor B1 to the phosphor B2 was 30.

The third fluorescent powder comprises fluorescent powder C1, fluorescent powder C2, fluorescent powder C3, fluorescent powder D, fluorescent powder E and fluorescent powder F. Phosphor C1 is (Ca, sr) AlSiN3 with a luminescence wavelength of 630nm, phosphor C2 is (Ca, sr) AlSiN3 with a luminescence wavelength of 660nm, phosphor C3 is (Ca, sr) AlSiN3 with a luminescence wavelength of 679nm, phosphor D is (Ca, sr) AlSiN3 with a luminescence wavelength of 720nm, phosphor E is (Ca, sr) AlSiN3 with a luminescence wavelength of 740nm, and phosphor F is (Ca, sr) AlSiN3 with a luminescence wavelength of 795 nm. The mass ratio of the fluorescent powder C1 to the fluorescent powder C2 to the fluorescent powder C3 to the fluorescent powder D to the fluorescent powder E to the fluorescent powder F is 9:12:15:20:20:22.

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

As shown in detail in fig. 7. The absolute light power value of violet light of 380-435nm is 0.35; the absolute light power value of blue light with the wavelength of 435 to 475nm is 0.6; the absolute light power value of the green light with the wavelength of 475 to 492nm is 0.88; the absolute light power value of green light with the wavelength of 492 to 577nm is 0.85; the absolute light power value of yellow light of 577 to 597nm is 1.0; the absolute light power value of orange light with the wavelength of 597-622nm is 0.95; the absolute light power value of 622 to 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 degree of the full-color bionic spectrum and the spectrum of the natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 95 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 98 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 97 percent.

Step 1, controlling I1 to be 0% of minimum output current, and I2 to be 84% of maximum output current, keeping 100% brightness value to be 800Lux, and illuminating for 6s;

step 2, reducing the brightness value from 100% to within 2s to 200 Lux, wherein I1 is 0% and I2 is 21% of the maximum output current; keep lighting for 6s;

step 3, increasing the brightness value to 100% within 2s;

Example 3

Specifically, the low color temperature light source group consists of 18 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 4000K, and a fluorescent layer of the panchromatic bionic white light LED light source comprises a first film layer and a second film layer which are sequentially stacked. The first film layer comprises a film-forming material silica gel and a first mixture, and the second film layer comprises a film-forming material silica gel and a second mixture. The first mixture comprises 20 mass ratio of phosphor A2 to phosphor B3 to phosphor C2: 70:30.

wherein, the fluorescent powder B3 is BaSi2O2N2 with the luminous wavelength of 535 nm.

The second mixture comprises a phosphor D, a phosphor E and a phosphor F, and the mass ratio is 20.

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

Specifically, as shown in fig. 9, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.33; the absolute light power value of the blue light with the wavelength of 435 to 475nm is 0.42; the absolute light power value of the green light of 475 to 492nm is 0.72; the absolute light power value of green light with the wavelength of 492 to 577nm is 0.66; the absolute light power value of yellow light of 577 to 597nm is 0.88; the absolute light power value of orange light of 597-622nm is 0.88; the absolute luminous power value of 622 to 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 degree of the full-color bionic spectrum and the same-color-temperature natural light spectrum is Ai/Bi; wherein Ai refers to the radiant quantity of a full-color bionic light source at inm, and Bi refers to the radiant quantity of a natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 91 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 99 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 100 percent.

Specifically, the high color temperature light source consists of 18 full-color bionic (single power is 0.5W) white light LED light sources, the color temperature is 6000K, and a fluorescent layer of the full-color bionic white light LED light source comprises a first film layer and a second film layer which are sequentially stacked.

The first film layer comprises a film-forming material silica gel and a first mixture, and the second film layer comprises a film-forming material silica gel and a second mixture. The first mixture comprises 15 mass percent of fluorescent powder A2, fluorescent powder B3 and fluorescent powder C2: 60:6.

The second mixture comprises fluorescent powder D, fluorescent powder E and fluorescent powder F, and the mass ratio of the fluorescent powder D to the fluorescent powder E to the fluorescent powder F is 40:60:75.

meanwhile, the film forming method was a squeeze film method, the film thickness of the first film layer was 0.13mm and the first mixture concentration was 40%, and the film thickness of the second film layer was 0.13mm and the second mixture concentration was 63%.

As shown in detail in fig. 8. In the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.43; the absolute light power value of 435 to 475nm blue light is 0.78; the absolute light power value of the green light of 475 to 492nm is 1.25; the absolute light power value of green light with the wavelength of 492 to 577nm is 1.15; the absolute light power value of yellow light of 577 to 597nm is 1.1; the absolute light power value of orange light of 597-622nm is 1.0; the absolute luminous power value of 622 to 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 degree of the full-color bionic and homochromatic-temperature natural light spectrum is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 93 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 97 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 91 percent.

The method for lighting by adopting the lighting device comprises the following steps: and in the lighting process, the color temperature of the light source is unchanged.

Step 1, controlling I1 to be 0% of minimum output current and I2 to be 63% of maximum output current, keeping a 100% brightness value of 600Lux, and illuminating for 18s;

step 2, reducing the brightness value from 100% to within 1s to 250 Lux, wherein I1 is the minimum output current, namely 0%, I2 is 26% of the maximum output current, and keeping illumination for 2s;

step 3, increasing the brightness value to 100% within 1s;

Example 4

An LED eye-protecting 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, and the driving power supply module is electrically connected with 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 all full-color bionic light sources;

the control module is used for simultaneously providing a current I1 signal of the low color temperature light source group and a current I2 signal of the high color temperature light source group to the driving power supply module; the driving power supply module is used for generating driving currents I1 and I2 according to the received current I1 size signal and the received current I2 size signal to respectively drive the low color temperature light source group and the high color temperature light source group, so that the change of illumination brightness is realized.

Specifically, the low color temperature light source group comprises 18 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 2800K, and a fluorescent layer of each panchromatic bionic white light LED light source comprises a first film layer and a second film layer which are sequentially stacked.

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

The second mixture comprises fluorescent powder D, fluorescent powder E and fluorescent powder F, and the mass ratio is 40:60:70.

meanwhile, the film forming method was a squeeze film method, the film thickness of the first film layer was 0.22mm and the first mixture concentration was 63%, and the film thickness of the second film layer was 0.22mm and the second mixture concentration was 67%.

In a specific spectrum, the absolute light power value of violet light of 380 to 435nm is 0.22; the absolute light power value of 435 to 475nm blue light is 0.44; the absolute light power value of the green light of 475 to 492nm is 0.62; the absolute luminous power value of green light of 492 to 577nm is 0.55; the absolute light power value of yellow light of 577 to 597nm is 0.92; the absolute light power value of orange light of 597-622nm is 0.92; the absolute luminous power value of 622 to 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 degree of the full-color bionic spectrum and the same-color-temperature natural light spectrum is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 91 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 95 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 90 percent.

Specifically, the high color temperature light source consists of 18 full-color bionic (single power is 0.5W) white light LED light sources, the color temperature is 5000K, and a fluorescent layer of the full-color bionic white light LED light source comprises a first film layer and a second film layer which are sequentially stacked.

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

The second mixture comprises phosphor D, phosphor E and phosphor F, and the mass ratio is 30:55:60.

meanwhile, the film forming method was a squeeze film method, the film thickness of the first film layer was 0.17mm and the first mixture concentration was 47%, and the film thickness of the second film layer was 0.17mm and the second mixture concentration was 69%.

In a specific spectrum, the absolute light power value of violet light of 380 to 435nm is 0.38; the absolute light power value of 435 to 475nm blue light is 0.72; the absolute light power value of the green light of 475 to 492nm is 1.1; the absolute light power value of green light with the wavelength of 492 to 577nm is 1.0; the absolute light power value of yellow light of 577 to 597nm is 0.98; the absolute light power value of orange light of 597-622nm is 0.92; the absolute luminous power value of 622 to 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 degree of the full-color bionic spectrum and the spectrum of the natural light with the same color temperature is Ai/Bi; wherein Ai refers to the radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; when i is more than or equal to 380nm and less than or equal to 480nm, ai/Bi is 91 percent; when i is more than or equal to 480nm and less than or equal to 600nm, ai/Bi is 98 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 99 percent.

Step 1, controlling I1 to be 0% of minimum output current, and I2 to be 100% of maximum output current, keeping 100% brightness value to be 1000Lux, and illuminating for 8s;

step 2, reducing the brightness value from 100% to within 0.5s to 300Lux, wherein I1 is 0% and I2 is 30% of the maximum output current; keep lighting for 6s;

step 3, increasing the brightness value to 100% within 0.5s;

Comparative example 1

Compared with the embodiment 1, the LED light source is changed into a common LED light source for illumination, and a non-full-color bionic light source adopts the same illumination method as the embodiment 1.

Wherein the approximation degree of a common LED light source to a natural spectrum with the same color temperature is 50 percent, and the optical power of 640-650 nm is 0.65; the optical power is 0.44 at 650 to 660 nm; the optical power is 0.36 at 660-670nm; the optical power of 670 to 700nm is 0.21.

Comparative example 2

Compared with embodiment 1, the single full-color bionic light source in embodiment 1 is replaced by the full-spectrum LED disclosed in embodiment 1 in chinese patent CN109860370B, and the same illumination method as in embodiment 1 is adopted. The spectral plots are shown in FIG. 9 for comparison.

Comparative example 3

The same lighting device as in example 1 was used, compared to example 1. In the lighting process, the color temperature is unchanged, the brightness value is 900Lux, and the color temperature and the brightness value are always kept unchanged.

Comparative example 4

Compared with the embodiment 1, the same lighting device as the embodiment 1 is adopted, the color temperature value is not changed in the lighting process, and the specific method comprises the following steps:

step 2, reducing the brightness value from 100% to within 0.3s to 270 Lux, wherein I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current, I2 is 0%, and illumination is kept for 4s;

step 3, increasing the brightness value to 100% within 0.3 s;

Comparative example 5

Compared with embodiment 1, the same lighting device as embodiment 1 is adopted, the color temperature value is not changed in the lighting process, and the specific method comprises the following steps:

step 2, reducing the brightness value from 100% to within 2.8s to 270 Lux, wherein I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current, I2 is 0%, and illumination is kept for 4s;

step 3, increasing the brightness value to 100% within 2.8 s;

Comparative example 6

Compared to example 1, both the rise and fall times are within the range, but the total time used from step 1 to step 3 is less than 12s.

Compared with the embodiment 1, the LED eye-protection lighting device in the embodiment 1 is adopted, the color temperature value is not changed in the lighting process, and the specific method comprises the following steps:

step 1, controlling I1 to be 0% of minimum output current and I2 to be 95% of maximum output current, or controlling I1 to be 100% of maximum output current and I2 to be 0% of minimum output current, keeping the 100% brightness value to be 900Lux, and illuminating for 6s;

step 2, reducing the brightness value from 100% to within 1s to 270 Lux, wherein I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current, I2 is 0%, and the illumination is kept for 2s;

step 3, increasing the brightness value to 100% within 1s;

Comparative example 7

Compared to example 1, both the rise and fall times are within the range, but the total time taken from step 1 to step 3 is higher than 22s.

step 1, controlling I1 to be 0% of minimum output current and I2 to be 95% of maximum output current, or controlling I1 to be 100% of maximum output current and I2 to be 0% of minimum output current, keeping the 100% brightness value to be 900Lux, and illuminating for 18s;

step 2, reducing the brightness value from 100% to within 1s to 270 Lux, wherein I1 is 0% and I2 is 27% of the maximum output current; or I1 is 30% of the maximum output current, I2 is 0%, and illumination is kept for 4s;

step 3, increasing the brightness value to 100% within 1s;

Comparative example 8

Compared with the embodiment 1, the LED light source is changed into the common LED light source for irradiation, and the color is not full-color bionic. Wherein the approximation degree of a common LED light source to a natural spectrum with the same color temperature is 50 percent, and the optical power of 640-650 nm is 0.65; the optical power is 0.44 at 650 to 660 nm; the optical power is 0.36 at 660-670nm; the optical power of 670 to 700nm is 0.21.

In the lighting process, the color temperature is unchanged, the brightness value is 900Lux, and the color temperature is always kept unchanged.

Test 1

Some students in junior middle schools in Sichuan are taken as experimental objects, 12 groups are set, each group comprises two classes, and the number of students in each class is 48-50. In each group, factors such as male sex ratio, age, myopia and non-myopia distribution of students have statistical significance, and the factors are basically balanced in all aspects and have comparability. In each of 12 groups of classrooms, the same number of eye protection devices of examples 1 to 4 and comparative examples 1 to 8 and corresponding lighting methods were installed at the same positions. The specific student conditions are shown in table 2.

And (3) testing conditions: 8 in the morning, 30-11 in the morning, 2-4 in the afternoon: 00; during the period of leaving, the study does not exceed 3h at night, and the user goes to bed at 9 o' clock at night.

During the study period, the students need to go to the outdoor for activities every 45min, rest for 15min and rest for a short time.

The test period was 24 weeks and the visual change was as shown in Table 3. In table 3, the effective rate is the eye proportion of the reduction in number of degrees.

After 6 months, the subjects scored eye fatigue, with high eye fatigue at low score and high eye comfort at high score

And setting a standard of 0-10 points for high points, wherein the eye comfort level is high for 10 points, the eye comfort level is poor for 0 point, the higher the point is, the higher the eye comfort level is, and the test result is shown in table 3. In table 3, the effective rate is the eye proportion of the reduction in number of degrees.

In table 2, the vision of the high myopia is over 600 degrees, the vision of the moderate myopia is 300 to 600 degrees, and the vision of the mild myopia is under 300 degrees.

TABLE 2

TABLE 3

From the test results in table 3, the embodiments 1 to 4 adopt the technical solution of the present invention, the eye fatigue relieving score can reach 9.6 minutes, the effective rate of treating eyes with middle-high myopia and mild myopia reaches 100%, and the maximum can be reduced by 200 degrees, by adjusting the illumination light source and the light source brightness value variation method in the illumination process in a targeted manner, under the excellent illumination of the light source, the brightness is changed in a simulated manner, the function of actively adjusting the axis of the eye of a person is "reset", the person blinks unconsciously, and the axis of the eye is actively adjusted to conform to the vision habit, so that the effects of protecting the eye, relieving the eye fatigue and relieving or preventing myopia can be achieved. Comparative examples 1 to 7 do not use the full-color bionic light source or the illumination method of the present application, the effect of relieving eyestrain is significantly reduced, some eyes also generate a phenomenon of degree increase, and a good effect of relieving or preventing myopia cannot be achieved. The test data of the comparative example 8 group show that only the conventional illumination light source and the conventional illumination mode are adopted, the eye degrees are increased in different degrees, the condition that the non-myopic eyes are changed into the myopic eyes occurs, and the technical effect is poor.

The invention discloses an LED eye-protecting illumination use method, which comprises the steps that firstly, an illumination light source is a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum of the same color temperature reaching 95 +/-5%, the spectrum color rendering index of the full-color bionic light source is larger than 95, and R1-R15 are both larger than 90; the spectrum of the illumination light source forms the existence mode of red light with high saturation and cyan light with high saturation, and according to the imaging principle of colors on the retina, when the panchromatic bionic light source is used for illumination and is beneficial to visual imaging, the focal length of vision and the adjustment of an eye axis realize visual imaging for restoring the color of an object, the high adaptability and the comfort of vision are ensured, and the eye fatigue under illumination is effectively relieved. Meanwhile, the illumination method provided by the application comprises the following steps: step 1, keeping a 100% brightness value, and illuminating for 6-18 s; step 2, reducing the brightness value of 100% to 25% -45% within 0.5-2 s, and keeping illumination for 2-6 s; step 3, increasing the brightness value to 100% within 0.5 s-2 s; step 4, repeating the steps from step 1 to step 3, and performing circulating illumination; wherein the time from step 1 to step 3 is 12 s-22 s. In the whole lighting process, the color temperature of a light source is unchanged, the switching from high brightness to low brightness and the switching from low brightness to high brightness are completed within a specific time, the brightness value is changed in a circulating gradual change mode, static light is changed into dynamic light, meanwhile, the self-adaption of vision can be avoided, through the method for changing the brightness value of the light source in the lighting process by aiming at adjusting the lighting source and the light source in the lighting process, under the excellent light source lighting, the brightness is changed in a bionic mode, the function of resetting the eye axis of a person to actively adjust is achieved, the person can blink unconsciously, the eye axis of the person can be actively adjusted to accord with the vision habit, and therefore the effects of protecting the eyes, relieving the eye fatigue and relieving and preventing myopia can be achieved.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. An LED eye-protecting illumination use method is characterized in that an illumination light source adopts a full-color bionic light source, the spectrum of the full-color bionic light source is a spectrum with the approximation degree of a light source radiation power distribution curve and a natural spectrum of the same color temperature reaching 95 +/-5%, the spectrum color rendering index of the full-color bionic light source is greater than 95, and R1-R15 are both greater than 90; in the lighting process, the color temperature of the light source is unchanged;

the use method of the eye-protecting lighting comprises the following steps:

step 1, keeping a 100% brightness value, and illuminating for 6-18 s;

step 2, reducing the brightness value from 100% to 25% -45% within 0.5-2 s, and keeping illumination for 2-6 s;

step 3, increasing the brightness value to 100% within 0.5 s-2 s;

step 4, repeating the steps from the step 1 to the step 3, and performing circulating illumination; wherein the time length used for circulating the steps 1 to 3 is 12s to 22s each time; wherein 100% of brightness value is not less than 600Lux, and 25% -45% of brightness value is not more than 400Lux;

the LED eye-protecting lighting use method can realize the adjustment of the eye axis.

2. The use method of the LED eye-protecting illumination of claim 1, wherein in the spectrum of the full-color bionic light source, the approximation degree 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 radiant quantity of the panchromatic bionic light source at inm, and Bi refers to the radiant quantity of the natural light spectrum with the same color temperature at inm; ai/Bi =90% -100%, wherein i is more than or equal to 380nm and less than or equal to 700nm.

3. The use method of LED eye-protection lighting according to claim 2, wherein when i is 380nm or more and 480nm or less, ai/Bi is 90-95%; when i is not less than 480nm and not more than 600nm, ai/Bi is 95-100 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 90-100%.

4. The use method of LED eye-protection illumination according to claim 3, wherein in the step 1, the brightness value of 100% is maintained, and the illumination time is 6 s-16 s.

5. The method for using LED eye-protection illumination according to claim 4, wherein in the step 2, the brightness value of 100% is reduced to the brightness value of 25% -45% within 0.5 s-1.5 s, and the illumination is kept for 2 s-5 s.

6. The method of claim 5, wherein the brightness value in step 3 is increased to 100% within 0.5s to 1.5s.

7. The use method of the LED eye-protection lighting device according to claim 6, wherein the duration from step 1 to step 3 is 12s to 20s.

8. The use method of the LED eye-protection lighting, according to claim 1, is characterized in that the brightness value of 100% is not lower than 800Lux, and the brightness value of 25% -45% is not higher than 300Lux.

9. The use method of the LED eye-protection lighting device according to any one of claims 1 to 8, wherein the 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, and the driving power supply module is electrically connected with 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 all full-color bionic light sources;

10. The LED eye-protecting lighting device according to claim 9, further comprising an infrared remote controller, wherein the control module comprises an infrared receiver, the infrared receiver is configured to receive a remote control signal from 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.

11. The LED eye-protected illumination device of claim 10, wherein the control module further comprises a light sensor.

12. The LED eye-protecting illumination device according to claim 11, wherein the low color temperature light source set is formed by connecting a plurality of low color temperature panchromatic bionic light sources in series, in parallel, or in series-parallel, and the high color temperature light source set is formed by connecting a plurality of high color temperature panchromatic bionic light sources in series, in parallel, or in series-parallel.

13. The LED eye-protecting illuminator of claim 12, wherein the color temperature values of the set of low color temperature light sources and the color temperature values of the set of high color temperature light sources are two different color temperature values from 2700K to 5600K.

14. The LED eye-protecting illuminator of claim 13, wherein the color temperature values of the low color temperature light source set and the high color temperature light source set are respectively located at any two of 2700K-3000K, 4000K-4200K, 4700K-5200K and 5500K-6000K.