A visual protection lighting method and lighting device, application

Abstract

The application provides a visual protection lighting method, a lighting device and an application, wherein a high-illuminance white light source and a single-wavelength red light source are used as the light source; in the lighting process, the high-illuminance white light source is used for static color temperature lighting or dynamic color temperature lighting; and the single-wavelength red light source is used for synchronous dynamic lighting. The high-illuminance white light source has high similarity with natural light, and the human eye has strong adaptability and is in a natural and relaxed state, which is beneficial to improve eye fatigue. Meanwhile, the application uses the single-wavelength red light source as an auxiliary light source, and the single-wavelength red light source is used for synchronous dynamic lighting in the lighting process, so as to adjust the light color imaging of visual perception, reduce the forward pulling of the eye ball by the ciliary muscle of the eye, and control the change amount of the eye axis; through the lighting environment provided by the high-illuminance white light source and the dynamic lighting of the red light, the change amount of the eye axis can be controlled, and the eyes of people of all ages can be protected and the eye fatigue can be reduced.

Description

Technical Field

[0001] This invention relates to the field of eye-protection lighting technology, specifically to a lighting method, lighting device, and application for visual protection. Background Technology

[0002] Different colors of light are imaged at different locations on the retina. Green light is imaged directly on the retina, so the human eye is in a very relaxed state when looking at green objects. Blue light is imaged in front of the retina, so the eyes naturally widen slightly when looking at blue light to ensure the focus is on the retina, causing a change in the eye axis. Red light is imaged in front of the retina, so the eyes naturally squint when looking at red light to ensure the focus is on the retina, also causing a change in the eye axis. The human eye was formed and evolved in a natural light environment, and its adaptability to natural light is irreplaceable. Under natural light, the human eye does not easily experience visual fatigue.

[0003] Currently, people often use their eyes under lighting devices. The spectrum emitted by these devices differs significantly from natural light. Many lighting devices have a severe deficiency in the red light spectrum and a high amount of blue light. Especially when people are reading or writing, they often stare intently at the object being viewed. This prolonged focus can easily lead to eye fatigue.

[0004] Existing technologies utilize high color rendering index (CRI) white light sources that reduce blue light and increase red light spectrum to provide adjustable eye axis illumination that conforms to visual habits. This can effectively protect the eyes of junior high school students and alleviate eye fatigue. However, in reality, adults, young adults, and the elderly also experience eye fatigue from prolonged use of lighting. The eye development of junior high school students differs from that of adults, and research has found that current lighting methods are significantly less effective at protecting the eyes of adults of all ages. There is currently no suitable eye-protecting lighting method for all age groups.

[0005] Therefore, it is of great significance to develop an eye-protecting lighting method suitable for people of all ages. Summary of the Invention

[0006] The purpose of this invention is to address the problem of existing technologies lacking suitable eye-protection lighting methods for people of all ages, and to provide an eye-protection lighting method, device, and application. This lighting method uses a high color rendering index (CRI) white light source that closely resembles natural light and a single-wavelength red light source as the illumination source. The CRI white light source provides excellent light source characteristics and a high degree of similarity to natural light, making the eye-use lighting environment more similar to natural lighting. Under CRI white light illumination, the human eye adapts well and is in a naturally relaxed state, thus reducing eye fatigue. Simultaneously, this application uses a single-wavelength red light source as an enhanced auxiliary light source. During the illumination process, the single-wavelength red light source employs synchronous dynamic illumination to adjust the color imaging of visual perception, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in the axial length of the eye. By providing an illumination environment with a CRI white light source combined with dynamic red light illumination to control the amount of change in the axial length of the eye, it is possible to achieve the effect of protecting the eyes and reducing eye fatigue for people of all ages.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A visual protection lighting method, wherein the lighting source adopts a high color rendering index (CRI) white light source and a single-wavelength red light source; wherein, the single-wavelength red light source is a single-wavelength red light source, and the wavelength of the effective band of the red light produced is at least one wavelength in the range of 600nm to 700nm; the high CRI white light source emits light with a color rendering index >90. During the lighting process, the color temperature of the high color rendering index white light source remains static or changes dynamically; at the same time, the brightness of the single-wavelength red light source changes dynamically. The red light brightness dynamic lighting includes the following steps: first, maintain a brightness value below 50% for a period of time, then increase the brightness value to 100% within 0.7s to 1.2s, maintain the illumination for an appropriate time, and then decrease the brightness value to below 50% within 0.7s to 1.2s, repeating the cycle of illumination. When the red light brightness increases, the color temperature of the high color rendering index (CRI) white light source remains unchanged or decreases synchronously; when the red light brightness decreases, the color temperature of the high CRI white light source remains unchanged or increases synchronously.

[0008] This invention provides a visual protection lighting method that uses a high color rendering index (CRI) white light source that closely matches natural light and a single-wavelength red light source as illumination sources. The CRI white light source provides excellent light source characteristics and a high degree of similarity to natural light, making the lighting environment for eye use more similar to natural lighting. Under CRI white light illumination, the human eye adapts well and is in a naturally relaxed state, which reduces eye fatigue. Simultaneously, this application uses a single-wavelength red light source as an enhanced auxiliary light source. During the illumination process, the single-wavelength red light source employs synchronous dynamic illumination to adjust the color imaging of visual perception, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in eye axis. By providing a high CRI white light illumination environment combined with dynamic red light illumination to control the amount of change in eye axis, it is possible to achieve the effect of protecting the eyes and reducing eye fatigue for people of all ages.

[0009] Research has found that the color temperature of high color rendering index (CRI) white light sources can be statically constant or dynamically changing, but red light sources require dynamic brightness changes to solve technical problems. The research also found that when red light brightness increases, the color temperature of the high CRI white light source increases synchronously; conversely, when red light brightness decreases, the color temperature of the high CRI white light source decreases synchronously, resulting in a significant deterioration in performance.

[0010] Furthermore, the effective wavelength of the red light generated by the single-wavelength red light source is at least one wavelength selected from 630nm to 700nm. Preferably, the effective wavelength of the red light generated by the single-wavelength red light source is at least one wavelength selected from 630nm to 670nm. More preferably, the effective wavelength of the red light generated by the single-wavelength red light source is at least one wavelength selected from 650nm to 660nm. Studies have found that a suitable effective wavelength of red light can demonstrate a better eye protection effect.

[0011] Furthermore, during the illumination process, the brightness value of the high CRI white light source remains unchanged; simultaneously, Single-wavelength red light source employs dynamic brightness illumination, specifically including the following steps: Step 1: Maintain a brightness level below 50% and illuminate for 9 to 14 seconds; Step 2: Increase the brightness to 100% within 0.7s to 1.2s; maintain the illumination for 3s to 7s. Step 3: After that, the brightness value drops to below 50% within 0.7s to 1.2s. Step 4: Repeat steps 1 to 3 to perform cyclic lighting.

[0012] The single-wavelength red light source switches between low and high brightness within a specific time period, gradually changing the brightness value in a cyclical manner, transforming static light into dynamic light. This dynamic illumination by the single-wavelength red light source can regulate the color perception of light, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in the eye axis. The combined effect of a high color rendering index (CRI) white light source for static illumination and dynamic cyclic illumination by the single-wavelength red light source achieves unexpected technical effects. The technical solution provided by this invention can help people of all ages protect their eyes and reduce eye fatigue.

[0013] Furthermore, the lighting process includes the following steps: Step 1: The high color rendering index white light source maintains its highest color temperature value and provides illumination for 9 to 14 seconds; during the same time period, the single-wavelength red light source maintains a brightness value of less than 50% for synchronous illumination. Step 2: The high color temperature (CRI) white light source decreases from its highest color temperature value to its lowest color temperature value within 0.7s to 1.2s; during the same time period, the single-wavelength red light source gradually increases to 100% brightness value; then the high CRI white light source and the single-wavelength red light source maintain illumination synchronously for 3s to 4s. Step 3: After the high color rendering index white light source, the lowest color temperature value rises to the highest color temperature value within 0.7s to 1.2s; within the same time period, the single-wavelength red light source gradually decreases to a brightness value below 50%; Step 4: Repeat steps 1 to 3 for cyclical synchronous illumination using a high color rendering index white light source and a single-wavelength red light source, respectively. The difference between the highest and lowest color temperature values ​​shall not be less than 600K.

[0014] This invention provides a visual protection lighting method, wherein the lighting source adopts a high color rendering index (CRI) white light source and a single-wavelength red light source; wherein, the effective wavelength of the red light generated by the single-wavelength red light source is at least one wavelength in the range of 600nm to 700nm; the lighting process includes the following steps: Step 1, the high CRI white light source maintains the highest color temperature value for 9s to 14s; during the same time period, the single-wavelength red light source maintains a brightness value of less than 50% for synchronous lighting; Step 2: The high color temperature (CRI) white light source decreases from its highest color temperature value to its lowest color temperature value within 0.7s to 1.2s; during the same time period, the single-wavelength red light source gradually increases to 100% brightness value; then the high CRI white light source and the single-wavelength red light source maintain illumination synchronously for 3s to 4s. Step 3: After the high color rendering index white light source, the lowest color temperature value rises to the highest color temperature value within 0.7s to 1.2s; within the same time period, the single-wavelength red light source gradually decreases to a brightness value below 50%; Step 4: Repeat steps 1 to 3 for cyclical synchronous illumination using a high color rendering index white light source and a single-wavelength red light source, respectively. The difference between the highest and lowest color temperature values ​​shall not be less than 600K.

[0015] On the one hand, high color rendering index (CRI) white light source illumination helps with visual focusing and eye axis adjustment during image formation, effectively alleviating eye fatigue under such illumination. On the other hand, throughout the illumination process, the high CRI white light source completes the switching between high and low color temperatures and vice versa within a specific time period, cyclically and gradually changing the color temperature value, transforming static light into dynamic light. This causes the eyes to blink, the eyeballs to autonomously refocus and reset, and actively adjust the eye axis in accordance with visual habits. Simultaneously, during the high CRI white light source illumination process, this application synchronously illuminates with a single-wavelength red light source. This single-wavelength red light source also completes the switching between low and high brightness and vice versa within a specific time period, cyclically and gradually changing the brightness value, transforming static light into dynamic light. The dynamic illumination of the single-wavelength red light source can regulate the color imaging of visual perception, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in eye axis. By combining high color rendering index white light source and single wavelength red light source with dynamic cyclic illumination, unexpected technical effects have been achieved. The technical solution provided by this invention can enable people of all ages to protect their eyes and reduce eye fatigue.

[0016] Furthermore, in step 1, the single-wavelength red light source maintains a brightness value of 20%-50% and is synchronously illuminated with a high color rendering index white light source.

[0017] Furthermore, in step 1, the illumination time of the high color rendering index white light source and the single-wavelength red light source is 9s to 12s. For example, the illumination time of the full-color bionic light source and the single-wavelength red light source is 9s, 10s, 11s, and 12s, respectively.

[0018] Furthermore, in step 2, the color temperature change time of the high color rendering index white light source and the brightness change time of the single wavelength red light source are both 0.8s to 1.1s, for example, 0.8s, 0.9s, 1.0s, and 1.1s; the illumination time that keeps the brightness constant is 3s to 4s, for example, 3s, 4s, and 5s.

[0019] Furthermore, in step 3, the time for the color temperature change of the high color rendering index white light source and the time for the brightness change of the single wavelength red light source are 0.8s to 1.1s; for example, 0.8s, 0.9s, 1.0s, and 1.1s.

[0020] Furthermore, the lighting source also includes a far-infrared light source, the effective wavelength of which is 4μm~25μm; during the lighting process, the brightness value of the far-infrared light source remains constant and is synchronously illuminated with a single-wavelength red light source. Preferably, the effective wavelength of the far-infrared light source is 8μm~14μm; the brightness value of the far-infrared light source is 300 Lux~600 Lux. Studies have found that adding far-infrared light waves can achieve a better effect in relieving eye fatigue, possibly because the addition of far-infrared light waves accelerates the activity of visual nerve cells, resulting in a better eye protection effect.

[0021] Furthermore, for high color rendering index (CRI) white light sources, the 100% luminance value should be no less than 600 Lux, and the 25%–45% luminance value should be no greater than 400 Lux; for single-wavelength red light sources, the 100% luminance value should be no less than 600 Lux, and the luminance value below 50% should be no greater than 450 Lux. Choosing an appropriate brightness can increase human comfort and relieve eye fatigue.

[0022] Another object of the present invention is to provide an apparatus for the above-described illumination method for visual protection.

[0023] An apparatus used in the above-described visual protection lighting method includes a control module, a drive power supply module, a high color rendering index white light source module, and a single-wavelength red light source module. The high color temperature white light source module includes a low color temperature high color temperature white light source group and a high color temperature high color temperature white light source group, and the red light source module includes a single wavelength red light source group. The driving power supply module is electrically connected to the low color temperature high color rendering index (CRI) white light source group, the high color temperature high CRI white light source group, and the red light source group, respectively. The control module is used to simultaneously provide the driving power supply module with the ratio signal of the current I1 of the low color temperature high CRI white light source group and the current I2 of the high color temperature high CRI white light source group, as well as the magnitude signal of the current I3 of the single-wavelength red light source group. The driving power supply module is used to generate driving currents I1, I2, and I3 according to the received ratio signal of current I1 and current I2 and the magnitude signal of current I3 to drive the low color temperature high CRI white light source group, the high color temperature high CRI white light source group, and the red light source group, respectively, thereby realizing the adjustment of the color temperature of the high CRI white light source group and the change of the brightness of the red light source group module.

[0024] This application provides an LED eye-protection lighting device, including a control module, a driving power supply module, a high color rendering index (CRI) white light source group module, and a single-wavelength red light source group module; the high CRI white light source group module includes a low color temperature high CRI white light source group and a high color temperature high CRI white light source group, and the red light source module includes a single-wavelength red light source group. The driving power supply module is electrically connected to the low color temperature high color index white light source group, the high color temperature high color index white light source group, and the red light source group, respectively. The control module is used to simultaneously provide the driving power supply module with the ratio signal of the current I1 of the low color temperature high color index white light source group and the current I2 of the high color temperature high color index white light source group, as well as the magnitude signal of the current I3 of the single-wavelength red light source group. The driving power supply module is used to generate driving currents I1, I2, and I3 according to the received ratio signal of current I1 and current I2 and the magnitude signal of current I3 to drive the low color temperature high color index white light source group, the high color temperature high color index white light source group, and the red light source group, thereby realizing the adjustment of the color temperature of the high color index white light source and the change of the brightness of the red light source group module. The LED eye-protection lighting device disclosed in this application realizes the change of lighting brightness by simultaneously adjusting the current of the high color temperature light source group and the low color temperature light source group. It has a simple structure, is easy to use, and is easy to promote.

[0025] Furthermore, the control module includes a light sensor.

[0026] Furthermore, the single-wavelength red light source group includes at least two single-wavelength red light sources with different effective red light bands; the at least two single-wavelength red light sources with different effective red light bands are connected in parallel with unequal current intensities; the control module is used to simultaneously provide the different current magnitude signals of all single-wavelength red light sources to the driving power supply module, and the driving power supply module is used to generate different magnitude driving currents according to the different current magnitude signals of all received single-wavelength red light sources to drive different single-wavelength red light sources respectively, thereby realizing the illumination brightness variation of the single-wavelength red light source group.

[0027] Furthermore, the low color temperature high color rendering index white light source group is composed of several low color temperature high color rendering index white light sources connected in series, parallel, or series-parallel, and the high color temperature high color rendering index white light source group is composed of several high color temperature high color rendering index white light sources connected in series, parallel, or series-parallel.

[0028] Furthermore, the color temperature values ​​of the low color temperature high color rendering index white light source group and the high color temperature high color rendering index white light source group are two different color temperature values ​​between 2700K and 5600K.

[0029] Furthermore, the color temperature values ​​of the low color temperature high color rendering index white light source group and the high color temperature high color rendering index white light source group are respectively located in any two color temperature ranges among 2700K~3000K, 4000K~4200K, 4700K~5200K and 5500K~6000K.

[0030] Spectral power: The spectrum emitted by a light source is often not a single wavelength, but rather a mixture of radiation of many different wavelengths. The distribution of the spectral radiation of a light source according to wavelength order and the intensity of each wavelength is called the spectral power distribution of the light source.

[0031] The parameters used to characterize the magnitude of spectral power are divided into absolute spectral power and relative spectral power. The absolute spectral power distribution curve is a curve plotted using the absolute values ​​of the light energy at various wavelengths of spectral radiation.

[0032] Relative spectral power distribution curve: This refers to the spectral power distribution curve that compares the energy of various wavelengths of the radiation spectrum of a light source, performs normalization, and ensures that the radiant power varies only within a specified range. The relative spectral power with the highest radiant power is 1, and the relative spectral power of other wavelengths is less than 1.

[0033] Another object of the present invention is to provide an application of the above-mentioned illumination method for visual protection.

[0034] The above-mentioned visual protection lighting method is applied in panel lights, table lamps, ceiling lights, floor lamps, downlights, PAR lights, and spotlights.

[0035] This eye-protecting lighting method achieves unexpected technical effects through the dynamic and cyclical illumination of a high color rendering index white light source and a single-wavelength red light source. The technical solution provided by this invention can protect the eyes and reduce eye fatigue for people of all ages. It can be used in panel lights, table lamps, ceiling lights, floor lamps, downlights, PAR lights, and spotlights, and has a wide range of applications and is easy to promote.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention provides a visual protection lighting method that uses a high color rendering index (CRI) white light source that closely matches natural light and a single-wavelength red light source as the illumination source. The CRI white light source provides excellent light source characteristics and has a high similarity to natural light, making the lighting environment for eye use more similar to the natural lighting environment. Under the illumination of the CRI white light source, the human eye adapts well and is in a naturally relaxed state, which improves eye fatigue. At the same time, this application uses a single-wavelength red light source as an enhanced auxiliary light source. The single-wavelength red light source uses synchronous dynamic illumination during the illumination process to adjust the light color imaging of visual perception, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in the axial length of the eye. By providing a lighting environment with a CRI white light source combined with dynamic illumination of red light to control the amount of change in the axial length of the eye, people of all ages can achieve the effect of protecting their eyes and reducing eye fatigue.

[0037] 2. This invention provides a visual protection lighting method. The lighting source uses a high color rendering index (CRI) white light source and a single-wavelength red light source. During the lighting process, on the one hand, the high CRI white light source helps adjust the focal length and axial length of the eye during visual imaging, effectively alleviating eye fatigue under the lighting. On the other hand, throughout the lighting process, the high CRI white light source completes the switching from high color temperature to low color temperature and from low color temperature to high color temperature within a specific time period, cyclically and gradually changing the color temperature value, transforming static light into dynamic light. This causes the eyes to blink, the eyeballs to autonomously refocus and reset, and actively adjust the axial length to conform to visual habits. Simultaneously, during the high CRI white light source illumination process, this application synchronously illuminates with a single-wavelength red light source. The single-wavelength red light source also completes the switching from low brightness to high brightness and from high brightness to low brightness within a specific time period, cyclically and gradually changing the brightness value, transforming static light into dynamic light. The dynamic illumination of the single-wavelength red light source can regulate the color imaging of visual perception, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in axial length. By combining high color rendering index white light source and single wavelength red light source with dynamic cyclic illumination, unexpected technical effects have been achieved. The technical solution provided by this invention can enable people of all ages to protect their eyes and reduce eye fatigue.

[0038] 3. This application provides an LED eye-protection lighting device. The driving power supply module is electrically connected to the low color temperature high color rendering index (CRI) white light source group, the high color temperature high CRI white light source group, and the red light source group, respectively. The control module is used to simultaneously provide the driving power supply module with a ratio signal of the current I1 of the low color temperature high CRI white light source group and the current I2 of the high color temperature high CRI white light source group, as well as a magnitude signal of the current I3 of the single-wavelength red light source group. The driving power supply module is used to generate driving currents I1, I2, and I3 according to the received ratio signal of current I1 and current I2 and the magnitude signal of current I3 to drive the low color temperature high CRI white light source group, the high color temperature high CRI white light source group, and the red light source group, thereby realizing the adjustment of the color temperature of the high CRI white light source group and the change of the brightness of the red light source group module. The LED eye-protection lighting device disclosed in this application has a simple structure, is easy to use, and is easy to promote.

[0039] 4. The eye-protecting lighting method disclosed in this invention achieves unexpected technical effects through the dynamic and cyclic lighting of a high color rendering index white light source and a single-wavelength red light source. The technical solution provided by this invention can protect the eyes and reduce eye fatigue for people of all ages. It can be used in panel lights, table lamps, ceiling lights, floor lamps, downlights, PAR lights and spotlights, and has a wide range of applications and is easy to promote. Attached Figure Description

[0040] Figure 1 This is the LED eye-protection lighting device in Example 1.

[0041] Figure 2 This is the spectrum of the low color temperature, high color rendering index white light source group in Example 1.

[0042] Figure 3 This is the spectrum of the high color temperature, high color rendering index white light source group in Example 1.

[0043] Figure 4 The image shows the red light spectrum emitted by the single-wavelength red light source module in Example 1.

[0044] Figure 5 This is the spectrum of the low color temperature, high color index white light source group in Example 2.

[0045] Figure 6 This is the spectrum of the high color temperature, high color rendering index white light source group in Example 2.

[0046] Figure 7 This is the red light spectrum emitted by the single-wavelength red light source module in Example 2.

[0047] Figure 8 This is a schematic diagram of the LED eye-protection lighting device in Example 4. Figure 9 This is the red spectrum emitted by the single-wavelength red light source module in Example 4.

[0048] Figure 10 This is the red spectrum emitted by another single-wavelength red light source module in Example 4.

[0049] Figure 11 This is the spectrum emitted by the far-infrared light source module in Example 5. Detailed Implementation

[0050] The present invention will now be described in detail with reference to the accompanying drawings.

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be 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 and not intended to limit the invention.

[0052] Example 1 like Figure 1 As shown, an LED eye-protection lighting device includes a control module, a driver power supply module, a high color rendering index white light source module, and a single-wavelength red light source module. The high color temperature white light source module includes a low color temperature high color temperature white light source group and a high color temperature high color temperature white light source group, and the red light source module includes a single wavelength red light source group. The driving power supply module is electrically connected to the low color temperature high color rendering index (CRI) white light source group, the high color temperature high CRI white light source group, and the red light source group, respectively. The control module is used to simultaneously provide the driving power supply module with the ratio signal of the current I1 of the low color temperature high CRI white light source group and the current I2 of the high color temperature high CRI white light source group, as well as the magnitude signal of the current I3 of the single-wavelength red light source group. The driving power supply module is used to generate driving currents I1, I2, and I3 according to the received ratio signal of current I1 and current I2 and the magnitude signal of current I3 to drive the low color temperature high CRI white light source group, the high color temperature high CRI white light source group, and the red light source group, respectively, thereby realizing the adjustment of the color temperature of the high CRI white light source group and the change of the brightness of the red light source group module.

[0053] Wherein, UI / I1 represents the voltage / current value of the low color temperature, high color rendering index white light source group; U2 / I2 represents the voltage / current value passing through a high color temperature, high color rendering index white light source group; U3 / I3 represents the voltage / current value passing through a single-wavelength red light source group.

[0054] Preferably, the control module includes a light sensor.

[0055] Preferably, the system also includes an infrared remote controller. The control module includes an infrared receiver, which receives the remote control signal from the infrared remote controller. Based on the remote control signal, the control module generates current I1 magnitude signal, current I2 magnitude signal, and current I3 magnitude signal.

[0056] Specifically, the low color temperature, high color rendering index (CRI) white light source group consists of 18 white LEDs with a CRI greater than 90% (each with a power of 0.5W) and a color temperature of 2700K. For example... Figure 2 As shown.

[0057] Specifically, the high color temperature, high color rendering index white light source consists of 18 white LEDs with a color rendering index > 90 (each with a power of 0.5W), and a color temperature of 5600K. For details, see below. Figure 3 As shown.

[0058] Specifically, the single-wavelength red light source module consists of 18 LED beads connected in series with an effective red light wavelength of 640nm. The specific red spectrum is shown in the figure below. Figure 4 The current of the single-wavelength red light source module is I3. The low color temperature single-wavelength red light source is uniformly arranged inside the low color temperature high color index white light source.

[0059] The method for providing illumination using the above-mentioned lighting device includes the following steps: Step 1: Control I1 to 0% minimum current output and I2 to 95% current output, with the ratio of I1 to I2 being 0:95%. Maintain the highest color temperature value of 5600K and provide illumination for 14 seconds. During the same time period, control I3 to 50% of the maximum output current and maintain the single-wavelength red light source at 50% brightness value of 450 Lux for synchronous illumination for 14 seconds. Step 2: Within 1 second, the color temperature is reduced from the highest value to the lowest value of 2700K to make a significant change in the color of light on the surface of the illuminated object, and the illumination is maintained for 3 seconds; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 to I2 is 100%:0; at the same time, the single-wavelength red light source gradually increases to 100% brightness value within 1 second, at which time I3 is the maximum output current, i.e., 100%, and the illumination is maintained for 3 seconds; Step 3: The lowest color temperature value is 2700K, which rises to the highest color temperature value of 5600K within 1 second; during the same time period, the brightness value of the single-wavelength red light source gradually decreases by 50%. Step 4: Repeat steps 1 through 3 to perform cyclic lighting.

[0060] Example 2 Example 2 uses the same LED eye-protection lighting device as Example 1.

[0061] Specifically, the low color temperature, high color rendering index (CRI) white light source group consists of 18 high CRI (0.5W per LED) white LEDs with a color temperature of 3000K. For example... Figure 5 As shown.

[0062] Specifically, the high color temperature full-color light source consists of 18 high color rendering index (each with a power of 0.5W) white LEDs, with a color temperature of 4200K, as detailed below. Figure 6 As shown.

[0063] Specifically, the single-wavelength red light source module consists of 18 LED beads connected in series, each with an effective red light wavelength of 630nm. The specific red spectrum is shown in the image below. Figure 7 The current of the single-wavelength red light source module is I3. The low color temperature single-wavelength red light source is uniformly arranged inside the low color temperature high color index white light source.

[0064] The method for providing illumination using the above-mentioned lighting device includes the following steps: Step 1: Control I1 to 0% minimum current output and I2 to 90% current output, with the ratio of I1 to I2 being 0:90%, maintain the highest color temperature value of 4200K, and provide illumination for 12 seconds; during the same time period, control I3 to the maximum output current of 20%, and maintain the single-wavelength red light source at 20% brightness value of 200Lux for synchronous illumination for 12 seconds. Step 2: Within 1.2 seconds, the color temperature is reduced from the highest value to the lowest value of 3000K to make a significant change in the color of light on the surface of the illuminated object, and the illumination is maintained for 3 seconds. At this time, I1 is controlled to be 100% minimum current output and I2 is controlled to be 0% current output, with the ratio of I1 to I2 being 100%:0%. Simultaneously, the single-wavelength red light source gradually increases to 100% brightness value of 1000Lux within 1.2 seconds, at which time I3 is at the maximum output current of 100%, and the illumination is maintained for 4 seconds. Step 3: The lowest color temperature value is 3000K, which rises to the highest color temperature value of 4200K within 1.2 seconds; During the same time period, the brightness value of the single-wavelength red light source gradually decreases by 20%. Step 4: Repeat steps 1 through 3 to perform cyclic lighting.

[0065] Example 3 Example 3 uses the same LED eye-protection lighting device as Example 1, with the high color rendering index white light source module and the single wavelength red light source module being the same as in Example 1.

[0066] The lighting method includes the following steps: During the lighting process, the brightness value of the high color rendering index white light source remains constant at 900 Lux; the brightness of the single-wavelength red light source undergoes cyclical lighting changes, as follows: Step 1: Control I1 to 0% minimum current output and I2 to 95% current output, with the ratio of I1 to I2 being 0:95%. Maintain the highest color temperature value of 5600K and provide illumination for 9 seconds. During the same time period, control I3 to 50% of the maximum output current and maintain the single-wavelength red light source at 50% brightness value of 450 Lux for synchronous illumination for 9 seconds. Step 2: Within 0.7 seconds, the highest color temperature value is reduced to the lowest color temperature value of 2700K to make a significant change in the color of light on the surface of the illuminated object, and the illumination is maintained for 3 seconds; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 to I2 is 100%:0; at the same time, the single-wavelength red light source gradually increases to 100% brightness value within 0.7 seconds, at which time I3 is the maximum output current, i.e., 100%, and the illumination is maintained for 3 seconds; Step 3: The lowest color temperature value is 2700K, which rises to the highest color temperature value of 5600K within 07 seconds; during the same time period, the brightness value of the single-wavelength red light source gradually decreases by 50%. Step 4: Repeat steps 1 through 3 to perform cyclic lighting.

[0067] Example 4 like Figure 8 As shown, Embodiment 4 provides an LED eye-protection lighting device, including a control module, a driver power supply module, a high color rendering index white light source group module, and a single wavelength red light source group module; The high color temperature (CRI) white light source module includes a low color temperature (CRI) white light source group and a high color temperature (CRI) white light source group. The driving power supply module is electrically connected to the low color temperature (CRI) white light source group, the high color temperature (CRI) white light source group, and the red light source module. The control module can simultaneously provide the driving power supply module with the proportional signals of the current I1 of the low color temperature (CRI) white light source group and the current I2 of the high color temperature (CRI) white light source group. The driving power supply module can generate driving currents I1 and I2 according to the received proportional signals of current I1 and current I2 to drive the low color temperature (CRI) white light source group and the high color temperature (CRI) white light source group respectively, thereby realizing the change of illumination color temperature of the high CRI white light source.

[0068] The single-wavelength red light source module includes two modules with effective red light bands of 650nm and 660nm respectively. These two modules are connected in parallel with unequal current intensities. The 650nm module comprises nine 650nm wavelength red LEDs connected in series, with a current intensity of I31. The 660nm module comprises nine 660nm wavelength red LEDs connected in series, with a current intensity of I32. I31 is less than I32. The control module can simultaneously provide the current magnitude signals I31 and I32 to the drive power module. The drive power module can generate different drive currents I31 and I32 based on the different current magnitude signals received from all the single-wavelength red light source modules, respectively driving different modules and thus achieving variations in the illumination brightness of the single-wavelength red light source module.

[0069] Preferably, both the high color rendering index control module and the red light control module further include a light sensor.

[0070] Preferably, the system also includes an infrared remote controller. The control module includes an infrared receiver, which receives the remote control signal from the infrared remote controller. Based on the remote control signal, the control module generates current I1 magnitude signal, current I2 magnitude signal, current I31 magnitude signal, and current I32 magnitude signal.

[0071] The spectrum emitted by the single-wavelength red light source module with a wavelength of 650nm is as follows: Figure 9 As shown, the spectrum emitted by a single-wavelength red light source module with a wavelength of 660nm is as follows. Figure 10 As shown.

[0072] Example 4 uses the same eye-protection lighting method as Example 1.

[0073] Example 5 Example 5 uses the same LED eye-protection lighting device as Example 1.

[0074] The low color temperature, high color rendering index (CRI) white light source group, the high color temperature, high CRI white light source group, and the single-wavelength red light source group are the same as in Example 1. The difference lies in that the lighting source also includes a far-infrared light source module, comprising six far-infrared LEDs. For example... Figure 11 As shown, the effective wavelength of the far-infrared light source is 4μm~25μm, and the brightness value of the far-infrared light source is 300Lux. During the illumination process, the high color rendering index white light source and the single-wavelength red light source adopt the same illumination method as in Example 1. In Example 5, the brightness value of the far-infrared light source remains unchanged and is synchronously illuminated with the single-wavelength red light source.

[0075] Comparative Example 1 Compared to Example 1, the illumination is changed to ordinary LED light source, not high CRI white light source, and the same lighting method as in Example 1 is used.

[0076] The ordinary LED light source has an approximation of 50% to the natural spectrum of the same color temperature, with a light power of 0.65 for 640~650nm, 0.44 for 650~660nm, 0.36 for 660~670nm, and 0.21 for 670~700nm.

[0077] Comparative Example 2 Compared to Example 1, Comparative Example 2 uses only a high color rendering index white light source as the illumination source. During the illumination process, the highest color temperature value is used for illumination, and the static value remains unchanged.

[0078] Comparative Example 3 Compared to Example 1, the same lighting device was used. During the lighting process, the high color rendering index white light source used a low color temperature and remained constant; the brightness value of the red light source remained constant at 900 Lux.

[0079] Comparative Example 4 Compared to Example 1, using the same lighting device as in Example 1, the specific method during the lighting process is as follows: Step 1: Control I1 to 0% minimum current output and I2 to 95% current output, with the ratio of I1 to I2 being 0:95%. Maintain the highest color temperature value of 5600K and provide illumination for 15 seconds. During the same time period, control I3 to 50% of the maximum output current and maintain the single-wavelength red light source at 50% brightness value of 450 Lux for synchronous illumination for 15 seconds. Step 2: Within 0.3 seconds, the highest color temperature value is reduced to the lowest color temperature value of 2700K to make a significant change in the color of light on the surface of the illuminated object, and the illumination is maintained for 3 seconds; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 to I2 is 100%:0; at the same time, the single-wavelength red light source gradually increases to 100% brightness value within 0.3 seconds, at which time I3 is the maximum output current, i.e., 100%, and the illumination is maintained for 3 seconds; Step 3: The lowest color temperature value is 2700K, which rises to the highest color temperature value of 5600K within 0.3 seconds; during the same time period, the brightness value of the single-wavelength red light source gradually decreases by 50%. Step 4: Repeat steps 1 through 3 to perform cyclic lighting.

[0080] Comparative Example 5 Compared to Example 1, the same lighting device as in Example 1 is used, and the specific method is as follows: Step 1: Control I1 to 0% minimum current output and I2 to 95% current output, with the ratio of I1 to I2 being 0:95%. Maintain the highest color temperature value of 5600K and provide illumination for 15 seconds. During the same time period, control I3 to 50% of the maximum output current and maintain the single-wavelength red light source at 50% brightness value of 450 Lux for synchronous illumination for 15 seconds. Step 2: Within 1.8 seconds, the highest color temperature value is reduced to the lowest color temperature value of 2700K to make a significant change in the color of light on the surface of the illuminated object, and the illumination is maintained for 3 seconds; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 to I2 is 100%:0; at the same time, the single-wavelength red light source gradually increases to 100% brightness value within 1.8 seconds, at which time I3 is the maximum output current, i.e., 100%, and the illumination is maintained for 3 seconds; Step 3: The lowest color temperature value is 2700K, which rises to the highest color temperature value of 5600K within 1.8 seconds; during the same time period, the brightness value of the single-wavelength red light source gradually decreases by 50%. Step 4: Repeat steps 1 through 3 to perform cyclic lighting.

[0081] Comparative Example 6 Compared to Example 1, Comparative Example 6 only uses a high color rendering index (CRI) white light source as the illumination source. During the illumination process, the illumination method of the high CRI white light source is exactly the same as that of Example 1.

[0082] Comparative Example 7 Compared to Example 1, Comparative Example 7 uses only a single-wavelength red light source as the illumination source. During the illumination process, the illumination method of the single-wavelength red light source is the same as that of Example 1.

[0083] Comparative Example 8 Comparative Example 8 used the same high color rendering index (CRI) white light source and single-wavelength red light source as Example 1. The difference was that the illumination method of the high CRI white light source was the same as that of Example 1, and the brightness value of the single-wavelength red light source remained constant at 900 Lux throughout the illumination process.

[0084] Comparative Example 9 Comparative Example 9 used the same high color rendering index (CRI) white light source and single-wavelength red light source as Example 1. The illumination method of the high CRI white light source was the same as that of Example 1. The difference was that the single-wavelength red light source was illuminated using the high CRI white light source illumination method, as detailed below.

[0085] Includes the following steps: Step 1: Control I1 to 0% minimum current output and I2 to 95% current output, with the ratio of I1 to I2 being 0:95%. Maintain the highest color temperature value of 5600K and provide illumination for 14 seconds. During the same time period, I3 is at its maximum output current of 100%, and the single-wavelength red light source maintains a brightness value of 900 Lux at 100% for synchronous illumination for 114 seconds. Step 2: Within 1 second, the color temperature is reduced from the highest value to the lowest value of 2700K to make a significant change in the color of light on the surface of the illuminated object, and the illumination is maintained for 3 seconds; at this time, I1 is 100%, I2 is 0%, and the ratio of I1 to I2 is 100%:0; at the same time, the single-wavelength red light source gradually decreases to 50% brightness value of 450 Lux within 1 second, at which time I3 is the maximum output current, i.e., 50%, and the illumination is maintained for 3 seconds; Step 3: The lowest color temperature value is 2700K, which rises to the highest color temperature value of 5600K within 1 second; within the same time period, the brightness value of the single-wavelength red light source rises to 100% brightness value within 1 second. Step 4: Repeat steps 1 through 3 to perform cyclic lighting.

[0086] Test 1 In a certain region of Sichuan, 100 junior high school students were selected as the subjects of the experiment. The 100 participants showed statistical significance in terms of gender ratio, age, distribution of myopia and non-myopia, and other factors. The results were basically balanced and comparable.

[0087] Every two weeks, the same 100 test participants were invited to enter 14 classrooms at the same time. Each of the 14 classrooms was equipped with the same number of eye protection devices and corresponding lighting methods of Examples 1-5 and Comparative Examples 1-9 in the same location.

[0088] In 14 classrooms, 100 participants read magazines and periodicals continuously for 2.5 hours without any disturbance to their eyes.

[0089] After 2.5 hours, the participants rated their eye fatigue, with high eye fatigue being a low score and high eye comfort being a high score. The high score is set with a standard of 0-10 points, where 10 points is high eye comfort and 0 points is poor eye comfort. The higher the score, the higher the eye comfort. The test results are shown in Table 1.

[0090] Test 2 In a certain region of Sichuan, 80 young people aged 18-44 were selected as subjects for the experiment. The 80 participants were statistically significant in terms of gender ratio, age, distribution of myopia and non-myopia, etc., and were basically balanced in all aspects, making them comparable.

[0091] Every two weeks, the same 80 test participants were invited to enter 14 classrooms at the same time. Each of the 14 classrooms was equipped with the same number of eye protection devices and corresponding lighting methods of Examples 1-5 and Comparative Examples 1-9 in the same location.

[0092] In 14 classrooms, 80 participants read magazines and periodicals continuously for 2.5 hours without any interruption during the entire process.

[0093] After 2.5 hours, the participants rated their eye fatigue, with high eye fatigue being a low score and high eye comfort being a high score. The high score is set with a standard of 0-10 points, where 10 points is high eye comfort and 0 points is poor eye comfort. The higher the score, the higher the eye comfort. The test results are shown in Table 1.

[0094] Test 3 In a certain region of Sichuan, 80 middle-aged people aged 45-59 were selected as subjects for the experiment. The 80 participants were statistically significant in terms of gender ratio, age, distribution of myopia and non-myopia, etc., and were basically balanced in all aspects, making them comparable.

[0095] Every two weeks, the same 80 test participants were invited to enter 14 classrooms at the same time. Each of the 14 classrooms was equipped with the same number of eye protection devices and corresponding lighting methods of Examples 1-5 and Comparative Examples 1-9 in the same location.

[0096] In 14 classrooms, 80 participants read magazines and periodicals continuously for 2.5 hours without any interruption during the entire process.

[0097] After 2.5 hours, the participants rated their eye fatigue, with high eye fatigue being a low score and high eye comfort being a high score. The high score is set with a standard of 0-10 points, where 10 points is high eye comfort and 0 points is poor eye comfort. The higher the score, the higher the eye comfort. The test results are shown in Table 1.

[0098] Test 4 In a certain region of Sichuan, 60 elderly people aged 65-80 years old were selected as the subjects of the experiment. The 60 participants had statistically significant differences in factors such as the male-to-female ratio, age, and distribution of myopia and non-myopia. All aspects were basically balanced and comparable.

[0099] Every two weeks, the same 60 test participants were invited to enter 14 classrooms at the same time. Each of the 14 classrooms was equipped with the same number of eye protection devices and corresponding lighting methods of Examples 1-5 and Comparative Examples 1-9 in the same location.

[0100] In 14 classrooms, 60 participants read magazines and periodicals continuously for 2.5 hours without any interruption during the entire process.

[0101] After 2.5 hours, the participants rated their eye fatigue, and the average score was calculated after removing the maximum and minimum scores. High eye fatigue was assigned a low score, and high eye comfort was assigned a high score. A standard of 0-10 points was set, where 10 points was high eye comfort and 0 points was poor eye comfort. The higher the score, the higher the eye comfort. The test results are shown in Table 1.

[0102] Table 1 As shown in Table 1, the test results of Examples 1-3, employing the technical solutions of this invention, achieved an eye fatigue relief score of 9.0 for people of all ages. Simultaneously, using a high color rendering index (CRI) white light source and a single-wavelength red light source as illumination, and by specifically adjusting the illumination source and the method of changing the brightness value during the illumination process, under excellent illumination, the brightness changes in a biomimetic manner, effectively "resetting" the active adjustment function of the human eye's axial length and regulating the light and color imaging of visual perception. This reduces the forward pull of the ciliary muscle on the eyeball and controls the amount of axial length change. Together, these effects can protect the eyes and alleviate eye fatigue for people of all ages, achieving unexpected technical results. Example 4 optimized the single-wavelength red light source band, with significant effects. Example 5 added a far-infrared light source, further improving the effect of relieving eye fatigue. Comparative Examples 1-9, which did not use the high color rendering index (CRI) white light source or the illumination method of this application, showed a significant reduction in the effect of relieving eye fatigue. In particular, it was found that the eye development of junior high school students differs from that of adults, and the eye protection effect of the high CRI white light source + illumination method was significantly reduced for adults of all ages other than junior high school students.

[0103] This invention provides a visual protection lighting method that uses a high color rendering index (CRI) white light source that closely matches natural light and a single-wavelength red light source as illumination sources. The single-wavelength red light source produces red light with an effective wavelength range of at least one wavelength between 600nm and 700nm. The high CRI white light source provides excellent light source illumination with a high degree of similarity to natural light, making the eye-use lighting environment more similar to natural lighting. Under high CRI white light illumination conditions, the human eye adapts well and is in a naturally relaxed state, which reduces eye fatigue. Simultaneously, this application uses the single-wavelength red light source as an enhanced auxiliary light source. During the illumination process, the single-wavelength red light source employs synchronous dynamic illumination to adjust the color imaging of visual perception, reduce the forward pull of the ciliary muscle on the eyeball, and control the amount of change in eye axis. By providing a high CRI white light illumination environment combined with dynamic red light illumination to control the amount of change in eye axis, it is possible to achieve the effect of protecting the eyes and reducing eye fatigue for people of all ages.

[0104] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A visual protection lighting method, characterized in that, The lighting source uses a high color rendering index (CRI) white light source and a single-wavelength red light source; the single-wavelength red light source is a single-wavelength red light source, and the wavelength of the effective red light produced is at least one wavelength in the range of 600nm to 700nm; the high CRI white light source emits light with a color rendering index >90. During the lighting process, the color temperature of the high color rendering index white light source remains static or changes dynamically; at the same time, the brightness of the single-wavelength red light source changes dynamically. The single-wavelength red light source employs dynamic brightness illumination, specifically including the following steps: Step 1: Maintain a brightness level below 50% and illuminate for 9 to 14 seconds; Step 2: Increase the brightness to 100% within 0.7s to 1.2s and maintain the illumination for 3s to 7s; Step 3: Within 0.7s to 1.2s, the brightness value drops to below 50%. Step 4: Repeat steps 1 to 3 to perform cyclic lighting; When the red light brightness increases, the color temperature of the high color rendering index (CRI) white light source remains unchanged or decreases synchronously; when the red light brightness decreases, the color temperature of the high CRI white light source remains unchanged or increases synchronously.

2. The illumination method for visual protection according to claim 1, characterized in that, The effective wavelength of the red light generated by the single-wavelength red light source is at least one wavelength selected from 630nm to 700nm.

3. The illumination method for visual protection according to claim 2, characterized in that, The effective wavelength of the red light generated by the single-wavelength red light source is at least one wavelength selected from 630nm to 670nm.

4. The illumination method for visual protection according to claim 1, characterized in that, The lighting process includes the following steps: Step 1: The high color rendering index white light source maintains its highest color temperature value and provides illumination for 9 to 14 seconds; during the same time period, the single-wavelength red light source maintains a brightness value of less than 50% for synchronous illumination. Step 2: The high color temperature (CRI) white light source decreases from its highest color temperature value to its lowest color temperature value within 0.7s to 1.2s; during the same time period, the single-wavelength red light source gradually increases to 100% brightness value; then the high CRI white light source and the single-wavelength red light source maintain illumination synchronously for 3s to 4s. Step 3: After the high color rendering index white light source, the lowest color temperature value rises to the highest color temperature value within 0.7s to 1.2s; within the same time period, the single-wavelength red light source gradually decreases to a brightness value below 50%; Step 4: Repeat steps 1 to 3 for cyclic synchronous illumination using a high color rendering index white light source and a single-wavelength red light source; wherein the difference between the highest and lowest color temperature values ​​is not less than 600K.

5. The illumination method for visual protection according to claim 4, characterized in that, In step 1, the single-wavelength red light source is maintained at 20%. 50% brightness value synchronized with high color rendering index white light source illumination.

6. The illumination method for visual protection according to claim 4, characterized in that, In step 1, the illumination time of the high color rendering index white light source and the single wavelength red light source is 9s to 12s.

7. The illumination method for visual protection according to claim 4, characterized in that, In step 2, the color temperature change time of the high color rendering index white light source and the brightness change time of the single wavelength red light source are 0.8s to 1.1s, and the illumination time that keeps the brightness constant is 3s to 4s.

8. The illumination method for visual protection according to claim 4, characterized in that, In step 3, the time for the color temperature change of the high color rendering index white light source and the time for the brightness change of the single wavelength red light source are 0.8s to 1.1s.

9. The illumination method for visual protection according to claim 1, characterized in that, The lighting source also includes a far-infrared light source, the effective wavelength of which is 4μm ~ 25μm; during the lighting process, the brightness value of the far-infrared light source remains unchanged and is synchronously illuminated with a single-wavelength red light source.

10. The illumination method for visual protection according to claim 9, characterized in that, The effective wavelength of the far-infrared light source is 8μm to 14μm; the brightness of the far-infrared light source is 300Lux to 600Lux.

11. A lighting device used in a visual protection lighting method as described in any one of claims 1-10, characterized in that, It includes a control module, a drive power supply module, a high color rendering index white light source module, and a single-wavelength red light source module; The high color temperature white light source module includes a low color temperature high color temperature white light source group and a high color temperature high color temperature white light source group, and the single wavelength red light source module includes a single wavelength red light source group. The driving power supply module is electrically connected to the low color temperature high color index white light source group, the high color temperature high color index white light source group, and the single-wavelength red light source group, respectively. The control module is used to simultaneously provide the driving power supply module with the ratio signal of the current I1 of the low color temperature high color index white light source group and the current I2 of the high color temperature high color index white light source group, as well as the magnitude signal of the current I3 of the single-wavelength red light source group. The driving power supply module is used to generate driving currents I1, I2, and I3 according to the received ratio signal of current I1 and current I2 and the magnitude signal of current I3 to drive the low color temperature high color index white light source group, the high color temperature high color index white light source group, and the single-wavelength red light source group, respectively, thereby realizing the adjustment of the color temperature of the high color index white light source group module and the change of the brightness of the single-wavelength red light source group module.

12. The lighting device according to claim 11, characterized in that, The single-wavelength red light source group includes at least two single-wavelength red light sources with different effective red light bands; the at least two single-wavelength red light sources with different effective red light bands are connected in parallel with unequal current intensities; the control module is used to simultaneously provide the different current magnitude signals of all single-wavelength red light sources to the driving power supply module, and the driving power supply module is used to generate different driving currents according to the different current magnitude signals of all received single-wavelength red light sources to drive different single-wavelength red light sources respectively, thereby realizing the illumination brightness variation of the single-wavelength red light source group.

13. The lighting device according to claim 11, characterized in that, The control module includes a light sensor.

14. The lighting device according to claim 11, characterized in that, The low color temperature, high color rendering index (CRI) white light source group is composed of several low color temperature, high CRI white light sources connected in series, parallel, or series-parallel; the high color temperature, high CRI white light source group is composed of several high color temperature, high CRI white light sources connected in series, parallel, or series-parallel.

15. The lighting device according to claim 14, characterized in that, The color temperature values ​​of the low color temperature, high color rendering index (CRI) white light source group and the high color temperature, high CRI white light source group are two different color temperature values ​​between 2700K and 5600K.

16. The application of a visual protection lighting method as described in any one of claims 1-10 in panel lights, table lamps, ceiling lights, floor lamps, downlights, PAR lights, and spotlights.

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