CN115499969A

CN115499969A - LED vision protection method and device

Info

Publication number: CN115499969A
Application number: CN202211453338.3A
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: 2022-12-20
Anticipated expiration: 2042-11-21
Also published as: CN115499969B

Abstract

The invention relates to a method and a device for protecting LED vision, wherein a full-color bionic light source is adopted for illumination, the approximation degree of a light source radiation power distribution curve and a natural spectrum of the same color temperature reaches 95% +/-5%, the spectrum color rendering index is greater than 95, and R1-R15 are all greater than 90; step 1, keeping the highest color temperature value and illuminating for 6-18 s; step 2, reducing the maximum color temperature value to the minimum color temperature value within 0.5 s-2 s, and keeping illumination for 2 s-6 s; step 3, raising the lowest color temperature value to the highest color temperature value 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. The brightness of the light source is unchanged, the color temperature value is switched within a specific time, the color temperature value is circularly changed gradually, the eye axis is actively adjusted, the visual habit is met, and the effects of protecting eyes, relieving eye fatigue and relieving and preventing myopia are achieved.

Description

LED vision protection method and device

Technical Field

The invention relates to the field of eye protection and illumination, in particular to a method and a device for protecting LED vision.

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 look slightly unnatural, so that the image of the red light falls on the retina. The problems of lack of red light spectrum and over-high blue light spectrum exist in the common artificial lighting spectrum, and after the artificial lighting spectrum is used for a long time, the yellow spot area of retina can be injured, eye fatigue can be easily caused, and myopia is formed.

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 in the full spectrum and a natural spectrum with the same color temperature can only reach about 80% at most. The red light can stimulate long-wave sensitive cone cells, slow down axial elongation, prevent animals from going 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 axis of the eye, and the emmetropic eye 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 have important significance for reducing eye fatigue and preventing myopia.

Furthermore, when people look at books or write, people often stare at the object to be viewed by concentrating spirit or keeping eyes away, so that after long-time vision, the eyes are focused for a long time, the eyes are easy to be tired, and especially in the light emitting color, when the red light spectrum is lost, the eyes look long for the object, the axes of the eyes are easy to be lengthened, and myopia is caused. In order to solve the above problems, for example, chinese patent CN108743268A discloses glasses for training eyeball muscles by light intensity to prevent and treat myopia or presbyopia and a using method thereof, and discloses a principle of adjusting eye axis by spectrum to prevent and treat myopia and hypermetropia, but the scheme is similar to the function of a light instrument, and adopts a combination of multiple white light sources to realize natural spectrum, and there is a fundamental problem that the red light spectrum is absent, and visual true imaging of object with color reduction cannot be realized. In addition, the journal, "short-term influence research on human eye axis by full-spectrum white light with different illuminance", in the Sichuan medicine 2020.01.24 ", discloses a conclusion that full-spectrum white light with different intensities can influence the eye axis. But neither discloses how to adjust the brightness to achieve active eye-axis adjustment and does not create a situation for the human eye to adapt.

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 the eyes can not well realize the method of adjusting the eye axis according with the vision habit to protect the eyes, relieve the fatigue of the eyes and prevent the myopia when the eyes read or write, the invention provides the LED vision protection method and the device thereof.

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

a LED vision protection method, the lighting source adopts the full color bionic light source, the spectrum of the full color bionic light source is a spectrum whose light source radiation power distribution curve and natural spectrum of the same color temperature are similar to each other by 95% +/-5%, and the spectrum color rendering index of the full color bionic light source is greater than 95, and the color rendering indexes R1-R15 are both greater than 90; in the lighting process, the brightness of the light source is unchanged; the LED visual protection method comprises the following steps:

step 1, keeping the highest color temperature value and illuminating for 6-18 s;

step 2, from the maximum color temperature value within 0.5 s-2 s, reducing to the minimum color temperature value to enable the color of the light on the surface of the object to be illuminated to change obviously, and keeping illumination for 2 s-6 s;

step 3, raising the lowest color temperature value to the highest color temperature value 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.

The invention discloses an LED visual protection 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 greater than 95, and the color rendering indexes R1-R15 are all greater 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 the highest color temperature value and illuminating for 6-18 s; step 2, from the maximum color temperature value within 0.5 s-2 s, reducing to the minimum color temperature value to enable the color of the light on the surface of the object to be illuminated to change obviously, and keeping illumination for 2 s-6 s; step 3, raising the lowest color temperature value to the highest color temperature value 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 brightness of a light source is inconvenient, the switching from a high color temperature value to a low color temperature value and the switching from the low color temperature value to the high color temperature value are completed within a specific time, the color temperature values are changed in a circulating gradient manner, static light is changed into dynamic light, the self-adaptation of vision can be avoided, the functions of 'resetting' eyes to actively adjust the eye axis are realized by adjusting the lighting light source and a light source color temperature value change method in the lighting process in a targeted manner under the excellent light source lighting, the color temperature is changed in a simulated manner, the eyes are actively adjusted, the eyes are enabled to blink unconsciously, and the eye axis is actively adjusted to accord with the vision habit, so that the effects of protecting the eyes, relieving the fatigue of the eyes and relieving or preventing myopia are 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 a 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%.

Furthermore, in the illumination process, the brightness value of the light source is 600 Lux-1200 Lux. For example, 600Lux, 650 Lux,700 Lux,750 Lux,800 Lux,850 Lux,900 Lux,950 Lux,1000 Lux,1050 Lux,1100 Lux,1150 Lux,1200 Lux.

Further, in the step 1, the highest color temperature is kept, and the illumination is carried out for 6 s-16 s. For example, the highest color temperature is kept, and the illumination time is 6s;7s;8s;9s;10s;11s;12s;13s;14s;15s; and 16s.

Further, in the step 2, the highest color temperature value is reduced to the lowest color temperature value within 0.5s to 1.5s, so that the light color of the surface of the illuminated object is obviously changed, and the illumination is kept for 2s to 5s. Researches find that the time for lowering the high color temperature value to the low color temperature value and the illumination time for lowering the low color temperature value are key factors for realizing the involuntary blinking of people and actively adjusting the axis of eyes, so that the comfort degree of eyes can be effectively improved, the eye fatigue can be relieved, the eyes can be protected, and the effect of reducing or preventing myopia can be realized. The high color temperature value is adjusted to the low color temperature value too fast, a self-adaptive effect can be generated on eyes, the eyes cannot adjust the eye axis, the self-adaptive time length of vision or the self-adaptive conditioned reflex of the vision to the external appearance can lead the eye axis not to change, the eye axis can not be adjusted actively, the eye fatigue is difficult to relieve, and the effect of reducing or preventing myopia is realized. However, if the high color temperature value is adjusted to the low color temperature 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 lowering the high color temperature value to the low color temperature 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 of the low color temperature value can be 2s,3s;4s and 5s.

Further, in the step 3, the color temperature value is increased to the highest color temperature value within 0.5 s-1.5 s. Researches find that the time for lowering the low color temperature value to the high color temperature value and the illumination time for the high color temperature value are key factors for realizing the involuntary blinking of people and actively adjusting the eye axis, and are necessary conditions for effectively improving the eye comfort, relieving the eye fatigue, protecting the eyes and realizing the reduction or prevention of the myopia. The low color temperature value is adjusted to the high color temperature value too fast, a self-adaptive effect can be generated on eyes, the eyes cannot adjust the eye axis, the self-adaptive time length of the vision or the self-adaptive conditioned reflex of the vision to the external appearance can lead the eye axis not to change, the active adjustment of the eye axis cannot be realized, the eye fatigue is difficult to realize and the effect of reducing or preventing myopia is realized. However, if the low color temperature value is adjusted to the high color temperature 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 color temperature value to rise to the high color temperature value may be 0.5s;0.6s;0.7s;0.8s;0.9s;1s;1.1s;1.2s;1.3s;1.4s; for 1.5s.

Further, the time duration from step 1 to step 3 is 12s to 20s in total. Researches find that even if the switching time in the color temperature value conversion process is met, the total time in the whole color temperature value adjusting process is also a key factor influencing the eye protection effect, the time in the whole color temperature value adjusting process is not easy to be overlong or too short, otherwise, the eye comfort level can be obviously reduced, and the myopia is relatively poor in alleviation or prevention. For example, the time period used in the steps 1 to 3 is 12s;13s;14s;15s;16s;17s;18s;19s; and 20s.

Further, the highest color temperature value and the lowest color temperature value are two color temperature values with different sizes in 2700K-5600K.

Furthermore, the maximum color temperature value and the minimum color temperature value are any two color temperature values of 2700K-3000K, 4000K-4200K, 4700K-5200K and 5500K-6000K respectively. Preferably, the lowest color temperature value is any one of 2700K to 3000K, and the highest color temperature value is any one of 5500K to 6000K.

The invention also aims to provide the LED visual protection device used in the LED visual protection method.

An LED visual protection 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 proportional relation signals of the current I1 of the low color temperature light source group and the current I2 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 proportional relation signals of the currents I1 and I2 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 color temperature value is achieved.

The application provides an LED visual protection 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 proportional relation signals of the current I1 of the low color temperature light source group and the current I2 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 proportional relation signals of the currents I1 and I2 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 color temperature value is achieved. The device disclosed by the application realizes the change of the illumination color temperature value by simultaneously adjusting the current ratio of the high color temperature light source group and the low color temperature light source group, so that the light color on the surface of a viewed object is obviously changed, human eyes can passively blink independently, eyeballs can automatically focus and reset, the eye axis is actively adjusted, and the eye axis is prevented from being lengthened.

Further, the control module 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 and current I2 proportional 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 at least two of 2700K-3000K, 4000K-4200K, 4700K-5200K and 5500K-6000K respectively. Preferably, the color temperature of the low color temperature light source group is 2700K-3000K, and the color temperature of the high color temperature light source group is 5500K-6000K.

Furthermore, the highest color temperature value is less than or equal to the color temperature value of the high color temperature light source group, and the lowest color temperature value is greater than or equal to the color temperature value of the low color temperature light source group.

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 435 to 475nm blue light 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 to 435nm 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 light power value of 475-492nm green light 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 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 5500K-6000K, the absolute light power value of purple light at 380-435nm 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 luminous power value of green light of 475 to 492nm is more than 0.70; the absolute luminous power value of green light of 492 to 577nm is more than 0.80; the absolute light power value of yellow light of 577 to 597nm 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 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 in which energies of various wavelengths of a light source radiation spectrum are compared with each other, and the radiation power is changed 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 visual protection 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 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 the highest color temperature value and illuminating for 6-18 s; step 2, reducing the highest color temperature value to the lowest color temperature value within 0.5 s-2 s so as to obviously change the light color of the surface of the illuminated object, and keeping illumination for 2 s-6 s; step 3, raising the lowest color temperature value to the highest color temperature value 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 illumination process, the brightness of a light source is inconvenient, the switching from a high color temperature value to a low color temperature value and the switching from the low color temperature value to the high color temperature value are completed within a specific time, the color temperature values are changed in a cyclic gradient manner, static light is changed into dynamic light, the self-adaptation of vision can be avoided, the eye fatigue relieving score can reach 9.4 minutes by adjusting the illumination light source and a light source color temperature value change method in the illumination process in a targeted manner, the treatment efficiency of eyes with middle-high myopia and mild myopia reaches 100 percent, the maximum degree can be reduced by 200 degrees, under the excellent illumination of the light source, the color temperature is changed in a bionic manner, the function of actively adjusting the eye axis of human eyes is reset, people can blink unconsciously, and the eye axis is actively adjusted to accord with the vision habit, so that the effects of protecting the eyes, relieving the eye fatigue and relieving or preventing the myopia can be achieved.

2. The application provides an LED visual protection 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 proportional relation signals of the current I1 of the low color temperature light source group and the current I2 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 proportional relation signals of the currents I1 and I2 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 color temperature value is achieved. The device disclosed by the application realizes the change of the illumination color temperature value by simultaneously adjusting the current proportion of the high-color-temperature light source group and the low-color-temperature light source group, so that the light color on the surface of a viewed object is obviously changed, human eyes can be caused to blink passively and focus and reset autonomously, the eye axis is actively adjusted, and the eye axis is prevented from being lengthened.

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 embodiment 2.

FIG. 5 is a spectrum diagram of the high color temperature light source set in example 2.

Fig. 6 is a spectrum diagram of the high color temperature light source set in embodiment 3.

Fig. 7 is a spectrum diagram of the low color temperature light source set in embodiment 4.

FIG. 8 is a chromatogram of a light source of comparative example 2 (upper diagram) and a spectrum of a low color temperature light source set of example 3 (lower diagram).

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 described in further 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 vision protection device includes 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 LED vision protection device further comprises an infrared remote controller, the control module comprises an infrared receiving device, the infrared receiving device is used for receiving remote control signals of the infrared remote controller, and the control module generates current I1 signals and current I2 signals according to the remote control signals. The control module also includes a light sensor. Specifically, the low color temperature light source group consists of 60 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 2900K, and a fluorescent layer of each 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 15:75:10.

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 40.

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 9:13:16:21:22:26;

meanwhile, the film forming method is a film pressing method, the film thickness of the first film layer is 0.13mm, the first fluorescent powder concentration is 62%, the film thickness of the second film layer is 0.13mm, the second fluorescent powder concentration is 62%, and the film thickness of the third film layer is 0.13mm, and the third fluorescent powder concentration is 62%.

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, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.28; the absolute light power value of 435 to 475nm blue light is 0.46; the absolute light power value of the green light of 475 to 492nm is 0.74; the absolute luminous power value of green light of 492 to 577nm is 0.82; 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 0.98; the absolute luminous power value of 622 to 700nm red light is 1.1. 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 92 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 91 percent.

Specifically, the high color temperature light source group comprises 60 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 5800K, 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 15:50:12.

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 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. 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 6:7:11:13:16:17. meanwhile, the film formation method is a film spraying method, the film thickness of the first film layer is 0.003mm and the first phosphor concentration is 63%, the film thickness of the second film layer is 0.003mm and the second phosphor concentration is 63%, and the film thickness of the third film layer is 0.003mm and the third phosphor concentration is 63%.

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. Specifically, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.42; the absolute light power value of the blue light with the wavelength of 435 to 475nm is 0.76; 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 0.95; the absolute light power value of yellow light of 577 to 597nm is 0.92; the absolute light power value of orange light with the wavelength of 597-622nm is 0.99; the absolute luminous power value of 622 to 700nm red light is 0.87. 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 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 94 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 98 percent.

The LED vision protection method, namely the method for lighting by adopting the device, comprises the following steps: in the lighting process, the brightness value of the light source is 800 Lux.

Step 1, controlling I1 to be 0% of minimum current output, controlling I2 to be 95% of current output, and controlling the proportion of I1 to I2 to be 0:95%, keeping the maximum color temperature value of 5800K, and illuminating for 15s;

step 2, from the maximum color temperature value within 1s, reducing the maximum color temperature value to 2900K so as to obviously change the light color of the surface of the object to be illuminated, and keeping illumination for 3s; in this case, I1 is 100%, I2 is 0%, and the ratio of I1 and I2 is 100%:0.

step 3, increasing the lowest color temperature value to be 2900K within 1s and to be 5800K;

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

Example 2

Specifically, the low color temperature light source group comprises 60 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 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 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. 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 9:13:16:21:23:27.

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

Specifically, as shown in fig. 4, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.15; 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 0.48; 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 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 group consists of 60 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 4200K, 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 20:70:25.

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. 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 9:12:15:20:20:22.

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%.

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. Specifically, as shown in fig. 5, in the spectrum, the absolute light power value of violet light of 380 to 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 luminous power value of green light 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 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 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 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.

The method for illuminating by adopting the device comprises the following steps: during the illumination process, the brightness value of the light source is 900 Lux.

Step 1, controlling I1 to be 0% of minimum current output, controlling I2 to be 90% of current output, and controlling the proportion of I1 to I2 to be 0:90%, keeping the maximum color temperature value 4100K, and illuminating for 12s;

step 2, from the maximum color temperature value within 2s, reducing the maximum color temperature value to 2700K so as to enable the light color of the surface of the object to be illuminated to be obviously changed, and keeping illumination for 4s; at this time, I1 is controlled to be 100% minimum current output, I2 is controlled to be 0% current output, and the ratio of I1 to I2 is 100%:0 percent.

Step 3, increasing the lowest color temperature value to be 2700K within 2s and to be 4100K;

Example 3

Specifically, the low color temperature light source group comprises 60 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 was a squeeze film method, the film thickness of the first film layer was 0.16mm and the first mixture concentration was 69%, and the film thickness of the second film layer was 0.16mm and the second mixture concentration was 69%.

Specifically, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.33; the absolute light power value of 435 to 475nm blue light is 0.42; the absolute luminous power value of green light of 475 to 492nm is 0.72; the absolute luminous power value of green light 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 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 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 group consists of 60 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 6000K, 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 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%.

Specifically, as shown in fig. 6, 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 luminous power value of green light 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 homocolor-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 illuminating by adopting the device comprises the following steps: in the lighting process, the brightness value of the light source is 1000 Lux.

Step 1, controlling I1 to be 0% of minimum current output, controlling I2 to be 85% of current output, and controlling the proportion of I1 to I2 to be 0:85%, keeping the maximum color temperature value of 5500K, and illuminating for 10s;

step 2, from the highest color temperature value within 0.5s, reducing the highest color temperature value to 4000K so as to obviously change the light color of the surface of the illuminated object, and keeping illumination for 6s; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 and I2 is 100%:0 percent.

Step 3, increasing the lowest color temperature value to be within 4000K within 0.5s to reach a highest color temperature value of 5500K;

Example 4

Specifically, the low color temperature light source group comprises 60 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. 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 9:12:15:20:21:25.

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%.

Specifically, as shown in fig. 7, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.33; the absolute light power value of 435 to 475nm blue light is 0.48; the absolute luminous power value of 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 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 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 96 percent; when i is more than or equal to 600nm and less than or equal to 700nm, ai/Bi is 95 percent.

Specifically, the high color temperature light source group consists of 60 panchromatic bionic (single power is 0.5W) white light LED light sources, the color temperature is 5200K, 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 11 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 0.16mm and the first mixture concentration was 45%, and the film thickness of the second film layer was 0.16mm and the second mixture concentration was 67%.

Specifically, in the spectrum, the absolute light power value of violet light of 380 to 435nm is 0.39; the absolute light power value of the blue light with the wavelength of 435 to 475nm is 0.73; the absolute light power value of the green light of 475 to 492nm is 0.97; the absolute light power value of green light with the wavelength of 492 to 577nm is 1.05; the absolute light power value of yellow light of 577 to 597nm is 1.05; the absolute light power value of orange light with the wavelength of 597-622nm is 0.97; the absolute luminous power value of 622 to 700nm red light is 0.92. 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 homocolor-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 illuminating by adopting the device comprises the following steps: in the lighting process, the brightness value of the light source is 600 Lux.

Step 1, controlling I1 to be 0% of minimum current output, controlling I2 to be 100% of current output, and controlling the proportion of I1 to I2 to be 0:100%, the highest color temperature value 5200K is kept, and the illumination is 6s;

2, from the highest color temperature value within 2s, reducing the color temperature value to 3000K so as to obviously change the light color of the surface of the illuminated object, and keeping illumination for 5s; in this case, I1 is 95%, I2 is 0%, and the ratio of I1 and I2 is 95%:0.

step 3, increasing the lowest color temperature value to 5200K within 2s when the lowest color temperature value is 3000K;

Comparative example 1

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

Wherein the approximation degree of a common LED light source and a natural spectrum with the same color temperature is 50 percent, and the optical power of 640 to 650nm is 0.65 percent; the optical power is 0.44 at 650 to 660 nm; the optical power is 0.36 at 660-670 nm; 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 spectrum map is shown in fig. 8.

Comparative example 3

The same apparatus as in example 1 was used as compared with example 1. In the lighting process, the brightness value is 800Lux and the color temperature is 5800K, which are kept unchanged all the time.

Comparative example 4

Compared with the embodiment 1, the same device as the embodiment 1 is adopted, the brightness value is 800Lux in the illumination process is unchanged, and the specific method comprises the following steps:

step 1, controlling I1 to be 0% of minimum current output, controlling I2 to be 95% of current output, and controlling the proportion of I1 to I2 to be 0:95 percent, keeping the maximum color temperature value of 5800K and illuminating for 15s;

step 2, from the highest color temperature value within 0.2s, reducing to the lowest color temperature value of 2900K so as to obviously change the light color of the surface of the illuminated object, and keeping illumination for 3s; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 and I2 is 100%:0.

step 3, increasing the lowest color temperature value to be 2900K within 0.2s and increasing the lowest color temperature value to be 5800K;

Comparative example 5

step 1, controlling I1 to be 0% of minimum current output, controlling I2 to be 95% of current output, and controlling the proportion of I1 to I2 to be 0:95%, keeping the maximum color temperature value of 5800K, and illuminating for 12s;

2, reducing the maximum color temperature value to 2900K within 3s from the maximum color temperature value so as to obviously change the light color of the surface of the illuminated object and keep illumination for 3s; in this case, I1 is 100%, I2 is 0%, and the ratio of I1 and I2 is 100%:0.

step 3, increasing the lowest color temperature value to be 2900K within 3s and increasing the lowest color temperature value to be 5800K;

Comparative example 6

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

Compared with the embodiment 1, the same device as the embodiment 1 is adopted, the brightness value is 800Lux in the illumination process is not changed, and the specific method comprises the following steps:

step 2, from the maximum color temperature value within 0.5s, reducing the maximum color temperature value to 2900K so as to obviously change the light color of the surface of the object to be illuminated, and keeping illumination for 2s; in this case, I1 is 100%, I2 is 0%, and the ratio of I1 and I2 is 100%:0.

step 3, increasing the lowest color temperature value to be 2900K within 0.5s and increasing the lowest color temperature value to be 5800K;

Comparative example 7

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

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 brightness value is 800Lux and the color temperature is 5800K, and the brightness value and the color temperature are kept unchanged all the time.

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 49-51. In each group, factors such as male sex ratio, age, myopia and non-myopia distribution of students have statistical significance, all aspects are basically balanced, and the students 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 1.

And (3) testing conditions are as follows: 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 2. In table 2, the effective rate is the eye proportion of the reduction in number of degrees.

After 6 months, the subjects were allowed to score the eye fatigue, the eye fatigue was low, the eye comfort was high, and the standard of 0-10 points was set, wherein 10 points were high, 0 point was poor, the higher the score was, the higher the eye comfort was, and the test results are shown in table 2.

In table 1, the eyesight of the highly myopic eyes is more than 600 degrees, the eyesight of the moderately myopic eyes is 300-600 degrees, and the eyesight of the mildly myopic eyes is less than 300 degrees.

TABLE 1

TABLE 2

From the test results in table 2, the embodiments 1 to 4 adopt the technical solution of the present invention, the eye fatigue relieving score can reach 9.4 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 adopt the full-color bionic light source or the illumination method of the present application, the effect of relieving eye fatigue is significantly reduced, and some eyes also generate the phenomenon of degree increase, so that the good effect of relieving or preventing myopia cannot be realized. The test data of the comparative example 8 shows that the eye degree can be increased in different degrees only by adopting the conventional illumination light source and the conventional illumination mode, and the technical effect is poor when the non-myopic eye is changed into the myopic eye.

The invention discloses an LED visual protection 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 greater than 95, and R1-R15 are both greater 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 the highest color temperature value and illuminating for 6-18 s; step 2, from the maximum color temperature value within 0.5 s-2 s, reducing to the minimum color temperature value to enable the color of the light on the surface of the object to be illuminated to change obviously, and keeping illumination for 2 s-6 s; step 3, raising the lowest color temperature value to the highest color temperature value 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 brightness of a light source is inconvenient, the switching from a high color temperature value to a low color temperature value and the switching from the low color temperature value to the high color temperature value are completed within a specific time, the color temperature values are changed gradually in a circulating mode, static light is changed into dynamic light, meanwhile, the self-adaption of vision can be avoided, the color temperature is changed in a bionic mode under the condition that the lighting light source and a light source color temperature value changing method in the lighting process are adjusted in a targeted mode, the function of resetting the eye axis of human eyes to be actively adjusted is achieved, people can blink unconsciously, the eye axis of human eyes is actively adjusted to accord with vision habits, and therefore the effects of protecting the eyes, relieving the fatigue of the eyes and reducing or 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. A LED visual protection method is characterized in that a full-color bionic light source is adopted as an illumination 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 the color rendering indexes R1-R15 are both larger than 90; in the lighting process, the brightness of the light source is unchanged; the LED visual protection method comprises the following steps:

step 2, reducing the highest color temperature value to the lowest color temperature value within 0.5 s-2 s so as to obviously change the light color of the surface of the illuminated object, and keeping illumination for 2 s-6 s;

2. The LED visual protection method according to 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 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 LED visual protection method 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 visual protection method for the LED according to claim 3, wherein in the step 1, the highest color temperature value is maintained, and the illumination is 6-16 s.

5. The LED visual protection method according to claim 4, wherein in the step 2, the maximum color temperature value is within 0.5s to 1.5s, and the minimum color temperature value is reduced to enable the color of the light on the surface of the illuminated object to change significantly, so that the illumination is maintained for 2s to 5s.

6. The visual protection method for LED according to claim 5, wherein in the step 3, the lowest color temperature value is within 0.5 s-1.5 s, and the highest color temperature value is increased.

7. The method for protecting LED vision of claim 6, wherein the duration from step 1 to step 3 is 12s to 20s.

8. The LED vision protection method of any one of claims 1-7, wherein the highest color temperature value and the lowest color temperature value are two color temperature values with different sizes from 2700K to 5600K.

9. The visual protection method of LED according to claim 8, wherein the highest color temperature value and the lowest color temperature value are any two of 2700K to 3000K, 4000K to 4200K, 4700K to 5200K and 5500K to 6000K block color temperature values.

10. An LED visual protection device used in the LED visual protection method according to any one of claims 1 to 9, 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 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;

11. The LED vision protection device of claim 10, further comprising an infrared remote control, wherein the control module comprises an infrared receiver for receiving a remote control signal from the infrared remote control, and wherein the control module generates a proportional signal of the current I1 and the current I2 according to the remote control signal.

12. The LED vision protection device of claim 11, wherein the control module further comprises a light sensor.

13. The LED vision protection device of claim 12, wherein the low color temperature light source set 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 set is formed by connecting a plurality of high color temperature full-color bionic light sources in series, in parallel or in series and parallel.

14. The LED vision protection device 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 two different color temperature values from 2700K to 5600K.

15. The LED vision protection device of claim 14, wherein the color temperature values of the low color temperature light source set and the high color temperature light source set are at least two of 2700K-3000K, 4000K-4200K, 4700K-5200K and 5500K-6000K, respectively.

16. The LED vision protection device of claim 15, wherein the highest color temperature value is less than or equal to the color temperature value of the high color temperature light source set, and the lowest color temperature value is greater than or equal to the color temperature value of the low color temperature light source set.