Myopia illumination system

Abstract

The present disclosure discloses a myopia illumination system comprising: a broad spectrum light source for emitting broad spectrum light; the spectrum shaping system is used for shaping the spectrum of the wide-spectrum light so as to form light with a specified spectrum; and the projection system is used for projecting the light of the specified spectrum to the eyes of a user. The spectrum shaper is used for carrying out spectrum shaping on the wide-spectrum light rays, so that the light rays in a selected wavelength range can be irradiated to the eye ground, and the expected effect is achieved.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of vision prevention and control devices. More specifically, the present disclosure relates to a myopia illumination system. Background Art

[0002] Axial growth is one of the main factors causing myopia in the human eye, especially for adolescents who are in a period of rapid growth. Studies have shown that direct irradiation of the retina with 650nm long-wave red light can effectively inhibit the growth of axial length. In addition, studies have also shown that irradiation of the fundus retina with a light source of appropriate power, appropriate time, and specific wavelength can promote choroidal blood flow under the retina, improve the state of choroidal hypoxia, and even thicken the choroid, achieving the effect of myopia prevention and control and improvement. Therefore, irradiating the retina with a light source of a specific wavelength has a positive effect on the prevention and control of adolescent myopia.

[0003] Existing photoreceptors usually use red light source laser diodes LD. LD has monochromaticity, coherence, directionality and collimation. These characteristics make people have the risk of high-power stimulation of the fundus when using the photoreceptor. In addition, when using LD, there is a phenomenon of wavelength shift, resulting in the inability of the expected wavelength of light to irradiate the fundus, and the effect of treating the fundus cannot be achieved.

[0004] In view of this, it is desired to provide a new type of myopia lighting system that can effectively control the wavelength of light desired to be irradiated to the fundus while avoiding the risk of high-power stimulation to the fundus. Utility Model Content

[0005] In order to at least solve one or more of the technical problems mentioned above, the present disclosure proposes a myopia lighting system.

[0006] In a first aspect, the present disclosure provides a myopia lighting system, characterized in that it includes: a wide-spectrum light source for emitting wide-spectrum light; a spectrum shaping system for shaping the spectrum of the wide-spectrum light to form light with a specified spectrum; and a projection system for projecting the light of the specified spectrum into the user's eyes.

[0007] In some embodiments, the spectral range of the broad spectrum light source is a spectral range covering any spectral cut-off width within the range of 300 nm-700 nm.

[0008] In some embodiments, the spectrum shaping system comprises one or more spectrum shapers, each spectrum shaper having a respective spectrum range.

[0009] In some embodiments, the plurality of spectrum shapers have different spectral ranges and / or different spectral cutoff widths.

[0010] In some embodiments, the spectral range of one or more of the spectrum shapers is: a low-pass cutoff range is about 640nm-660nm, and a high-pass cutoff range is about 670nm-700nm.

[0011] In some embodiments, the spectral range of one or more of the spectrum shapers is: a low-pass cutoff range is about 360nm-375nm, and a high-pass cutoff range is about 385nm-400nm.

[0012] In some embodiments, the spectrum cutoff width of one or more of the spectrum shapers is about 5nm-60nm, and the central wavelength is selected from any wavelength between 360nm-400nm and 640nm-700nm.

[0013] In some embodiments, the spectrum shaper includes any one or more of the following or a combination thereof: a filter; a transmissive grating filter; a reflective grating filter; a prism; a lens; a liquid crystal spectrum transmission plate; or a spectrum absorber.

[0014] In some embodiments, the spectral characteristics of the spectrum shaper include any of the following: high pass; low pass; band pass; or multi-band pass.

[0015] In some embodiments, it also includes: a color temperature adjuster for transmitting light with a specified color temperature range to adjust the color temperature of the light to be projected onto the fundus of the user.

[0016] In some embodiments, the color temperature adjuster is a warm light translucent plate, and the specified color temperature range is approximately 3500K-5000K.

[0017] In some embodiments, the broad spectrum light source comprises at least one of an LED lamp, an incandescent lamp, and a fluorescent lamp.

[0018] According to the myopia illumination system provided above, a wide spectrum light source is used, and the spectrum shaping of the wide spectrum light is performed by a spectrum shaper, so that the light of the selected wavelength range can be irradiated to the fundus, thereby achieving the desired effect. In some embodiments, the wide spectrum light source is at least one of an LED lamp, an incandescent lamp, and a fluorescent lamp, which improves the safety and effectiveness for the human eye. Further, in some embodiments, the spectrum shaping system includes a plurality of spectrum shapers, and different spectrum shapers and different spectrum cutoff bandwidths can be freely combined, which can effectively improve the utilization rate of the spectrum and the effect of preventing, controlling and improving myopia. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0020] Figure 1 An exemplary structural diagram of a myopia lighting system according to some embodiments of the present disclosure is shown;

[0021] Figure 2 shows an exemplary implementation of a spectrum shaper according to some embodiments of the present disclosure;

[0022] Figure 3 An exemplary implementation of a spectrum shaper according to some other embodiments of the present disclosure is shown;

[0023] Figure 4 shows an exemplary implementation of a spectrum shaper according to yet other embodiments of the present disclosure;

[0024] Figure 5 A schematic diagram of spectrum shaping of a spectrum shaper according to some embodiments of the present disclosure is shown;

[0025] Figure 6 An exemplary implementation of a spectrum shaping system including a plurality of spectrum shapers according to some embodiments of the present disclosure is shown;

[0026] Figure 7 A spectrum shaping schematic diagram of a spectrum shaper according to some other embodiments of the present disclosure is shown;

[0027] Figure 8 An exemplary structural diagram of a myopia lighting system according to some other embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0029] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0031] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0032] Figure 1 An exemplary structural diagram of a myopia illumination system 100 according to some embodiments of the present disclosure is shown. As shown in the figure, the myopia illumination system 100 may include: a wide spectrum light source 1, a spectrum shaping system 2 and a projection system 3. The wide spectrum light source 1 is used to emit wide spectrum light. The spectrum shaping system 2 is used to shape the spectrum of the wide spectrum light to form a light with a specified spectrum. The projection system 3 is used to project the light of the specified spectrum to the user's eyes.

[0033] The wide spectrum light source 1 can be arranged at the entrance end of the light transmission channel to emit wide spectrum light. In some embodiments, the spectral range of the wide spectrum light source 1 can be a spectral range covering any spectral cutoff width in the range of 300nm-700nm. In one example, the spectral range of the wide spectrum light source is 500nm-800nm, which covers the range of 500nm-700nm. The use of a wide spectrum light source can provide a rich spectrum resource for the myopia lighting system, so that it is convenient to select light of the desired spectrum to irradiate the fundus retina to achieve the desired effect. In some embodiments, the wide spectrum light source 1 may include but is not limited to light emitting diodes LED lamps, incandescent lamps, fluorescent lamps, etc. The light source power of the wide spectrum light source 1 can be about 5mW-1W, and the output power before the eye is about 0.1mW-15mW. By adopting the above light source and controlling the output power before the eye, the safety of light irradiation can be improved during the use of the myopia lighting system.

[0034] The spectrum shaping system 2 is used to shape the spectrum of the wide spectrum light emitted by the wide spectrum light source 1 to form a light with a specified spectrum. In the disclosed embodiment, spectrum shaping refers to adjusting the optical spectrum of the input light, such as adjusting the wavelength range of the light, specifically including the starting wavelength, the cutoff wavelength, the spectrum cutoff width, etc. By performing spectrum shaping on the wide spectrum light, light of the desired wavelength can be selected from it to irradiate the fundus, thereby achieving the desired effect. The specific implementation of the spectrum shaping system is described later.

[0035] The projection system 3 is used to project the shaped light with the specified spectrum onto the user's eyes, such as the fundus. The projection system 3 can be implemented in many ways.

[0036] In some embodiments, the projection system 3 may include an illumination lens 31 and a projection lens 32. The illumination lens 31 may be disposed on the light source exit side of the wide spectrum light source 1 to collect the light emitted by the wide spectrum light source 1 and project the light to the projection lens 32. The projection lens 32 may be spaced apart from the illumination lens 31 to project the light emitted by the illumination lens 31 to the user's pupil 4.

[0037] In the present disclosure, a lens refers to an optical element made of a transparent material whose surface is a part of a spherical surface. "Illumination" and "projection" are functional descriptions, and their specific implementation can be a lens group consisting of a lens or multiple lenses. The illumination lens and the projection lens can form a system structure of Kohler illumination. Those skilled in the art can understand that other methods can also be used to implement the projection system, but the inventive concept of the present disclosure is not there, so a detailed description of the projection system is omitted.

[0038] Thus, by using the myopia illumination system provided above, a wide spectrum light source is used, and the spectrum shaping of the wide spectrum light is performed by a spectrum shaper, so that light of a selected wavelength range can be irradiated to the fundus, thereby achieving the desired effect. In some embodiments, the wide spectrum light source uses LED, which can improve the safety and effectiveness for the human eye.

[0039] As mentioned above, the spectrum shaping system can perform spectrum shaping on the broad spectrum light, thereby selecting light of a desired wavelength to illuminate the fundus to achieve the desired effect. The spectrum shaping system may include one or more spectrum shapers. The spectrum shaper may be implemented in a variety of ways.

[0040] Figure 2 An exemplary implementation of a spectrum shaper according to some embodiments of the present disclosure is shown. In this embodiment, the spectrum shaper can be implemented using a single or multiple filters. The figure shows the principle of spectrum shaping implemented by the filter. As shown in the figure, the filter 21 selectively transmits a part of the spectrum for the incident light 211, while blocking the transmission of the rest of the spectrum by absorption, reflection, etc. That is, according to the spectral characteristics of the filter, the specified light 212 is transmitted, and the unspecified light 213 is reflected and absorbed.

[0041] Figure 3An exemplary implementation of a spectrum shaper according to other embodiments of the present disclosure is shown. In this embodiment, the spectrum shaper can be implemented using a single or multiple penetrating grating filters. The figure shows an exemplary structure of a penetrating grating filter. As shown in the figure, the penetrating grating filter 22 is composed of a series of parallel equidistant slits or protrusions, and a diffraction effect will be generated when the light source passes through the grating in parallel. By changing the grating parameters, light of a specific wavelength can be allowed to pass, and light of the remaining wavelengths will be diffracted to other places or eliminated, thereby achieving the effect of spectrum shaping.

[0042] Figure 4 An exemplary implementation of a spectrum shaper according to some other embodiments of the present disclosure is shown. In this embodiment, the spectrum shaper can be implemented using a single or multiple reflective grating filters. The figure shows the principle of spectrum shaping by a reflective grating filter. As shown in the figure, on the reflective grating filter 23, light of a specific wavelength is positively reflected and collected by the system, and light of an unselected wavelength is diffusely reflected or eliminated, thereby achieving the effect of spectrum shaping.

[0043] Those skilled in the art will appreciate that other devices may also be used to achieve spectrum shaping. For example, a spectrum shaper may be formed by a single or multiple different optical elements, including but not limited to prisms, lenses, etc. For another example, a spectrum shaper may be formed by non-optical elements, such as a liquid crystal spectrum transmission plate; or a spectrum absorber containing a spectrum absorbing material, etc. Regardless of the form taken, the essence of the spectrum shaper is an optical filter. Therefore, the spectral range of the spectrum shaper implemented by various devices can be characterized by the filtering parameters of the optical filter. Such filtering parameters may include but are not limited to: center wavelength, starting wavelength (also called low-pass cutoff wavelength), cutoff wavelength (also called high-pass cutoff wavelength), spectral cutoff width, etc. The spectral characteristics of the spectrum shaper may also similarly include any of the following: high pass; low pass; band pass; or multi-band pass. Each spectrum shaper may have its own spectral range and spectral characteristics.

[0044] Figure 5 A schematic diagram of spectrum shaping of a spectrum shaper according to some embodiments of the present disclosure is shown. In this embodiment, the spectrum range of the spectrum shaper can be: a low-pass cutoff wavelength range of about 640nm-660nm, a high-pass cutoff wavelength range of about 670nm-700nm, that is, a spectrum cutoff width of about 10nm-60nm. As shown in the figure, the transmission spectrum range is the spectrum range of irradiating the fundus retina. The spectrum range of this embodiment can correspond to the red light spectrum.

[0045] Research has found that the use of a 650nm wavelength has a good effect on myopia prevention and control for adolescents. In addition, it was also found that the use of a 670nm wavelength has a relevant effect on myopia prevention and control for middle-aged people. The principle of prevention and control is that the long-wave red light has strong penetration in the band where the red light is located, so after penetrating the retina, it can act on the choroid at the same time. Because red light has a warming effect, it will cause the bottleneck-like narrowing at the opening of the arteriole of the choroidal lobule to open, increase the blood flow entering the lobule, thereby increasing the microcirculation blood volume, thickening the choroid thickness, and preventing the sclera from lacking oxygen. Providing sufficient oxygen to the sclera can improve the blood circulation of the fundus, thereby achieving the effect of myopia prevention and control. In addition, 650nm red light can make the retinal epithelial pigment cells secrete dopamine, thereby effectively inhibiting the excessive growth of the eye axis. Therefore, by adjusting the parameters such as the low-pass cutoff wavelength and the high-pass cutoff wavelength of the spectrum shaper according to the above range, the appropriate red light can be selected from the wide-spectrum light source to match the user's situation, so as to obtain a better myopia prevention and control effect.

[0046] Furthermore, in some embodiments, the spectrum shaping system may include multiple spectrum shapers, each spectrum shaper may have a different spectrum range and / or a different spectrum cutoff width, so that different spectrum ranges and different spectrum cutoff widths can be freely combined. This combination method can effectively improve the utilization rate of the spectrum and the effect of preventing and improving myopia.

[0047] Figure 6 An exemplary implementation of a spectrum shaping system including multiple spectrum shapers according to some embodiments of the present disclosure is shown. As shown in the figure, the spectrum shaping system 2 can be implemented as a rotatable wheel, and the edge of the wheel is provided with multiple spectrum shapers (such as filters) distributed circumferentially, wherein the multiple spectrum shapers include at least two different spectrum shapers. For example, the figure shows a spectrum shaper 21 and a spectrum shaper 22 with the same central wavelength but a spectrum cutoff width of 10nm and 20nm respectively. The figure also shows a spectrum shaper 23 and a spectrum shaper 24 with the same spectrum cutoff width but a central wavelength of 650nm and 670nm, respectively, which can adapt to different types of users. In addition, the figure also shows a light-transmitting plate 25, which can be regarded as a full-band spectrum shaper. It can be understood that other spectrum shapers in the figure can have different central wavelengths and spectrum cutoff widths, which are not listed here one by one.

[0048] Figure 7The schematic diagram of spectrum shaping of the spectrum shaper according to other embodiments of the present disclosure is shown. In this embodiment, the spectrum range of the spectrum shaper can be: the low-pass cutoff wavelength range is about 360nm-375nm, and the high-pass cutoff wavelength range is about 385nm-400nm, that is, the spectrum cutoff width is about 10nm-40nm. As shown in the figure, the transmission spectrum range is the spectrum range of irradiating the fundus retina. The spectrum range of this embodiment can correspond to the violet spectrum.

[0049] Research has found that ultraviolet light can also play a significant role in eye health and myopia prevention and control. Therefore, by adjusting the parameters such as the low-pass cutoff wavelength and the high-pass cutoff wavelength of the spectrum shaper according to the above range, appropriate ultraviolet light can be selected from the wide-spectrum light source to irradiate the user's fundus to obtain the desired myopia prevention and control effect.

[0050] Similarly, in some embodiments, the spectrum shaping system may include multiple spectrum shapers, each spectrum shaper may have a different spectrum range and / or a different spectrum cutoff width, so that a free combination of different spectrum ranges and different spectrum cutoff widths can be achieved.

[0051] The above-mentioned red light spectrum shaping and purple light spectrum shaping can be arranged separately or in combination, such as a combination of different spectrum cutoff widths in the red light spectrum, a combination of different spectrum cutoff widths in the purple light spectrum, and a combination of the red light spectrum and the purple light spectrum. The spectral ranges of different spectrum shapers can be the same or different, and can partially overlap or not overlap. In this way, the utilization rate of the spectrum and the effect of preventing and improving myopia can be effectively improved.

[0052] In some embodiments, the spectrum cutoff width of a single spectrum shaper is about 5nm-60nm, and the central wavelength can be any wavelength between 360nm-400nm and 640nm-700nm. The spectrum cutoff width can be, for example, 60nm, 40nm, 20nm, 10nm, 5nm, etc. Narrowing the spectrum cutoff width can accurately select the required wavelength, ensure the singleness of the narrowband spectrum, and obtain the improvement effect brought by the corresponding wavelength.

[0053] In other embodiments, a combination of multiple spectrum shapers may be used to provide multiple spectrum ranges for selection. For example, the spectrum range of spectrum shaper 1 is 380±10nm, the spectrum range of spectrum shaper 2 is 650nm±5nm, the spectrum range of spectrum shaper 3 is 665nm±5nm, the spectrum range of spectrum shaper 4 is 670nm±5nm, the spectrum range of spectrum shaper 5 is 680nm±5nm, the spectrum range of spectrum shaper 6 is 650nm±10nm, the spectrum range of spectrum shaper 7 is 665nm±10nm, the spectrum range of spectrum shaper 8 is 665nm±20nm, the spectrum range of spectrum shaper 9 is 670nm±20nm, the spectrum range of spectrum shaper 10 is 680nm±20nm, and so on.

[0054] When multiple spectrum shapers are used in combination, these spectrum shapers can be of the same type, such as all filters, all reflective grating filters, etc.; or they can be of different types, such as some filters, some grating filters, some prisms, etc. Under the guidance of the present disclosure, those skilled in the art can select an appropriate spectrum shaper according to the spatial structure of the myopia illumination system.

[0055] Figure 8 2 shows an exemplary structural diagram of a myopia illumination system 800 according to some other embodiments of the present disclosure. In these embodiments, some other components of the myopia illumination system are further shown to better understand the present disclosure. Figure 1 Based on the myopia lighting system 100 shown, Figure 8 The myopia lighting system 800 has added a condenser, an aperture diaphragm, a color temperature adjuster, etc.

[0056] As shown in the figure, the myopia illumination system 800 includes: a wide spectrum light source 801, a condenser 802, an aperture stop 803, a spectrum shaping system 804, a color temperature adjuster 805, an illumination lens 806, and a projection lens 807 arranged along the optical path. The wide spectrum light source 801 is, for example, an LED, which emits a divergent light beam, which forms a convergent light beam after the convergence action of the condenser 802 and the aperture stop 803. The convergent light beam is spectrally shaped by the spectrum shaping system 804, and the output light beam has a specified spectrum range, and then the color temperature can be adjusted by the color temperature adjuster 805. The adjusted light beam passes through the illumination lens 806 and the projection lens 807, and is finally output as a uniformly distributed illumination light beam, which is projected onto the user's pupil 808.

[0057] In some embodiments, the wide-spectrum light source 801 is located at the entrance pupil plane of the condenser 802. Furthermore, the condenser 802 can be closely attached to the light exit plane of the wide-spectrum light source 801. Such an arrangement enables the target plane of the light source 801 to be located at the entrance pupil plane of the condenser 802, thereby converging all the divergent light beams output by the light source 801.

[0058] The condenser 802 may be a plano-convex lens, an aspheric lens or other optical element with a light-condensing function. Assuming that a plano-convex lens is used as the condenser, the convex surface of the plano-convex lens faces the light source, and the flat surface faces the aperture stop. It should be further explained that, assuming that the condenser uses other optical elements, correspondingly, the light beam diverging side of the optical element needs to face the light source, and the light beam converging side needs to face the aperture stop, so as to collect the divergent light beams and perform convergence processing.

[0059] The aperture stop 803 is located at the exit pupil plane of the condenser 802, so that the divergent light source converged by the condenser 802 can pass through the aperture stop 803, thereby increasing the power of the light source passing through the aperture stop 803. When the light source 801 is an LED, since the divergence angle of the LED light source is large and the power distribution is divergent, the divergent light beam output by the LED light source converges after passing through the condenser 802, so that the power distribution of the light source is concentrated and propagates backward and passes through the aperture stop 803. At this time, the light source at the aperture stop is equivalent to a surface light source, and the power attenuation is small. The divergence angle is the divergence angle of the convergent light beam after passing through the aperture stop, and the size is the aperture size of the aperture stop.

[0060] The spectrum shaping system 804 performs spectrum shaping on the light beam converged by the aperture stop 803 . The specific configuration and implementation are described above and will not be repeated here.

[0061] The color temperature adjuster 805 is used to transmit light with a specified color temperature range to adjust the color temperature of the light to be projected onto the user's fundus. In some embodiments, the color temperature adjuster 805 can be a warm light transparent plate that can transmit light with a color temperature range of about 3500K-5000K. By adding a color temperature adjuster, the light can be made softer and not harmful or irritating to the eyes.

[0062] In addition, the aperture stop 803 is located at the front focal plane of the illumination lens 806, and the exit pupil plane of the illumination lens 806 is located between the illumination lens 806 and the projection lens 807 and is close to the illumination lens 806. In other words, the exit pupil plane of the illumination lens 806 is located behind the illumination lens 806 and is close to its rear surface, and such an arrangement can make the light spot energy distribution on the exit pupil plane of the illumination lens 806 more uniform.

[0063] The exit pupil plane of the illumination lens 806 is also located at the front focal plane of the projection lens 807. With this arrangement, when the above-mentioned myopia illumination system is used, the light spot distribution on the exit pupil plane of the illumination lens can be projected onto the fundus, allowing the human eye to see a uniform surface light source.

[0064] Furthermore, it can be designed so that the pupil 808 of the human eye is located at the rear focal plane of the projection lens 807, so that the light emitted from each position on the exit pupil plane of the illumination lens 806 can pass through the pupil and illuminate the fundus.

[0065] Based on the above position conditions of the illumination lens 806 and the projection lens 807 , those skilled in the art can clearly understand that, in this embodiment, the illumination lens 806 and the projection lens 807 form a system structure of Kohler illumination, which solves the problem of light source non-uniformity.

[0066] Those skilled in the art should also understand that Figure 8 Only one exemplary structure of the myopia illumination system is shown. In other embodiments, the spectrum shaping system 804 and the color temperature adjuster 805 can be set at different positions. For example, the spectrum shaping system 804 can be set at any of the following positions: between the wide spectrum light source 801 and the condenser 802; between the condenser 802 and the aperture stop 803; between the aperture stop 803 and the illumination lens 806; between the illumination lens 806 and the projection lens 807; in the direction of the projection lens 807 away from the light source 801, etc. Similarly, the color temperature adjuster 805 can also be set at any position on the optical path from the wide spectrum light source 801 to the pupil 808 of the human eye, and the embodiments disclosed herein are not limited in this respect.

[0067] The terms "first" or "second" used in this application to refer to numbers or ordinals are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0068] Although multiple embodiments of the present disclosure have been shown and described herein, it is apparent to those skilled in the art that such implementation is provided by way of example only. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A myopia illumination system, characterized in that: include: A broad spectrum light source, for emitting broad spectrum light; A spectrum shaping system, used for shaping the spectrum of the wide spectrum light to form a light with a specified spectrum; as well as The projection system is used to project the light of the specified spectrum to the user's eyes.

2. The myopia lighting system according to claim 1, wherein the spectral range of the wide-spectrum light source is a spectral range covering any spectral cutoff width within the range of 300nm-700nm.

3. The myopia lighting system according to claim 2, wherein the spectrum shaping system comprises one or more spectrum shapers, each spectrum shaper having a respective spectrum range. 4 . The myopia lighting system according to claim 3 , wherein the plurality of spectrum shapers have different spectral ranges and / or different spectral cutoff widths.

5. The myopia lighting system according to any one of claims 3-4, wherein the spectral range of one or more of the spectrum shapers is: a low-pass cutoff range is approximately 640nm-660nm, and a high-pass cutoff range is approximately 670nm-700nm.

6. The myopia lighting system according to any one of claims 3 to 5, wherein the spectral range of one or more of the spectrum shapers is: a low-pass cutoff range is approximately 360nm-375nm, and a high-pass cutoff range is approximately 385nm-400nm.

7. The myopia lighting system according to any one of claims 3 to 6, wherein a spectral cutoff width of one or more of the spectrum shapers is approximately 5 nm-60 nm, and a central wavelength is selected from any wavelength between the wavelength ranges of 360 nm-400 nm and 640 nm-700 nm.

8. The myopia lighting system according to any one of claims 3 to 7, wherein the spectrum shaper comprises any one or more of the following or a combination thereof: Optical filters; Transmissive grating filter; Reflective grating filter; Prism; lens; Liquid crystal spectral transmission panel; or Spectral absorber.

9. The myopia illumination system according to any one of claims 3 to 8, wherein the spectral characteristics of the spectrum shaper include any one of the following: Qualcomm; Low pass; Bandpass; or Multi-band pass.

10. The myopia illumination system according to any one of claims 1 to 9, further comprising: The color temperature adjuster is used to transmit light having a specified color temperature range to adjust the color temperature of the light to be projected onto the user's fundus.

11. The myopia lighting system according to claim 10, wherein the color temperature adjuster is a warm light translucent plate, and the specified color temperature range is approximately 3500K-5000K.

12. The myopia lighting system according to any one of claims 1 to 11, wherein the broad spectrum light source comprises at least one of an LED lamp, an incandescent lamp, and a fluorescent lamp.

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