Full-color bionic fluorescent composition, full-color bionic fluorescent film, and full-color bionic light source

Abstract

This application relates to the field of optical lighting. Examples of the application provide a full-color bionic fluorescent composition, a full-color bionic fluorescent film, and a full-color bionic light source. The full-color bionic fluorescent composition includes a first fluorescent powder having an emission wavelength of 480-500 nm, a second fluorescent powder having an emission wavelength greater than 500 nm and less than 620 nm, and a third fluorescent powder having an emission wavelength equal to or greater than 620 nm. The mass ratio of the first fluorescent powder to the second fluorescent powder to the third fluorescent powder is (15-70):(15-70):(13-70). By adjusting the proportions of different fluorescent powders whose emission wavelengths are dispersed within the visible light wavelength band, the full-color bionic fluorescent composition is excited to generate white light with low blue light power, a high color rendering index, and high red light power. This white light closely mimics natural light, improving comfort and reducing harm to the human body.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to a Chinese patent application filed with the China Patent Office on November 21, 2022, bearing application number 202211456611.8 and titled "Full-color bionic fluorescent composition, full-color bionic fluorescent film, and full-color bionic light source," the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of optical lighting technology, and in particular to a full-color bionic fluorescent composition, a full-color bionic fluorescent film, and a full-color bionic light source. [Background technology]

[0003] With the development of society, people's production and daily activities rely more and more on artificial light sources, and the time spent using them is becoming longer and longer. LED light sources are one of the most common white light sources in production and daily life, and have the advantages of high brightness, low energy consumption, and high safety.

[0004] The white LED light source of the prior art still has shortcomings. First, natural light is the recognized ideal lighting light. The white light generated by a white LED light source is significantly different from natural light, causing discomfort to people. Second, the white light generated by a white LED light source contains a high amount of blue light, which can cause certain harm to people, such as causing cataracts and affecting sleep. Third, the color rendering index of the white light generated by a white LED light source is low, causing it to portray objects and environments inaccurately and resulting in deviations. Summary of the Invention [Problem to be solved by the invention]

[0005] The purpose of the present application is to provide a full-color bionic fluorescent composition, a full-color bionic fluorescent film and a full-color bionic light source to solve the technical problems of the prior art, such as a large difference between the white light generated by a white LED light source and natural light, a high blue light content and a low color rendering index. [Means for solving the problem]

[0006] To achieve the above object, a first embodiment of the present invention provides a full-color bionic fluorescent composition. The full-color bionic fluorescent composition of the present invention includes a first fluorescent powder, a second fluorescent powder, and a third fluorescent powder. The first fluorescent powder has an emission wavelength of 480-500nm, the second fluorescent powder has an emission wavelength greater than 500nm but less than 620nm, and the third fluorescent powder has an emission wavelength greater than 620nm. The mass ratio of the first fluorescent powder, the second fluorescent powder, and the third fluorescent powder is 15-70:15-70:13-70.

[0007] The full-color bionic fluorescent composition of the present embodiment is a combination of a first fluorescent powder, a second fluorescent powder and a third fluorescent powder with different emission wavelengths, so that the white light generated by the excitation of the full-color bionic fluorescent composition contains visible light of different wavelength bands within the range of 400nm-800nm. At the same time, by adjusting the mass ratio of the first fluorescent powder, the second fluorescent powder and the third fluorescent powder, the absolute optical power of the visible light of different wavelength bands of the white light is close to natural light, and the absolute optical power of blue light is reduced, thereby improving the similarity of the white light to natural light and the color rendering index, improving the comfort of using the white light, and improving the environmental and product benefits.

[0008] A second aspect of the present embodiment provides a full-color bionic fluorescent film, which includes a film-forming material and the full-color bionic fluorescent composition of the embodiment of the present application dispersed in the film-forming material.

[0009] The full-color bionic fluorescent film of the embodiment of the present application contains the full-color bionic fluorescent composition of the embodiment of the present application, so that the color rendering index of the white light generated by the excitation of the full-color bionic fluorescent film of the embodiment of the present application is high, and the color rendering index of the blue light generated is low, thereby simulating natural light to a high degree.

[0010] A third aspect of the present embodiment provides a full-color bionic light source, which includes at least one light-emitting unit, the light-emitting unit including a chip and a full-color bionic fluorescent screen disposed in the optical path of the chip, and the full-color bionic fluorescent screen is the full-color bionic fluorescent screen of the above embodiment of the present application. [Effects of the Invention]

[0011] The full-color bionic light source of the present embodiment uses a chip to generate excitation light, which excites the full-color bionic phosphor film of the present embodiment to generate white light. The white light generated by the full-color bionic light source of the present embodiment has low absolute optical power of blue light, high absolute optical power of cyan light, a high color rendering index, and is highly similar to natural light. [Brief explanation of the drawings]

[0012] In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly describe the drawings that need to be used in the description of the embodiments or prior art. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings based on these drawings without any creative work. [Figure 1] FIG. 1 is a structural schematic diagram of a light-emitting unit according to an embodiment of the present invention. [Figure 2] FIG. 2 is a spectrum diagram of the full-color bionic light source according to Example C1. [Figure 3] FIG. 3 is a spectrum diagram of the full-color bionic light source according to Example C2. [Figure 4]FIG. 4 is a spectrum diagram of the full-color bionic light source according to Example C3. [Figure 5] FIG. 5 is a spectrum diagram of the full-color bionic light source according to Example C4. [Figure 6] FIG. 6 is a spectrum diagram of the full-color bionic light source according to Example C5. [Figure 7] FIG. 7 is a spectrum diagram of the full-color bionic light source according to Example C6. [Figure 8] FIG. 8 is a spectrum diagram of the full-color bionic light source according to Example C7. [Figure 9] FIG. 9 is a spectrum diagram of the full-color bionic light source according to Example C8. [Figure 10] FIG. 10 is a spectrum diagram of the full-color bionic light source according to Example C9. [Figure 11] FIG. 11 is a spectrum diagram of the full-color bionic light source according to Example C10. [Figure 12] FIG. 12 is a spectrum diagram of the full-color bionic light source according to Example C11. [Figure 13] FIG. 13 is a spectrum diagram of the full-color bionic light source according to Example C12. [Figure 14] FIG. 14 is a spectrum diagram of the full-color bionic light source according to Example C13. [Figure 15] FIG. 15 is a spectrum diagram of the full-color bionic light source according to Example C14. [Figure 16] FIG. 16 is a spectral diagram of the full-color bionic light source according to Example C15, where FIG. 16 a is the spectral diagram of the first light-emitting unit, FIG. 16 b is the spectral diagram of the second light-emitting unit, FIG. 16 c is the spectral diagram of the third light-emitting unit, FIG. 16 d is the spectral diagram of the combined first to third light-emitting units, and FIG. 16 e is the spectral diagram of a conventional bimorph low blue full-spectrum light source. [Figure 17]FIG. 17 is a spectrum diagram of the full-color bionic light source according to Comparative Example C1. [Figure 18] FIG. 18 is a spectrum diagram of the full-color bionic light source according to Comparative Example C2. DETAILED DESCRIPTION OF THE INVENTION

[0013] In order to clarify the technical problems, technical solutions and beneficial effects of the present application, the present application will be described in more detail below in conjunction with examples. It should be understood that the specific examples described herein are for illustrative purposes only and do not limit the present application.

[0014] In this application, the term "and / or" describes a relationship between related objects and indicates that a three-way relationship may exist; for example, A and / or B may indicate that A exists alone, that A and B exist together, and that B exists alone. However, A and B may be singular or plural. The character " / " generally indicates that the related objects before and after it are in an "or" relationship.

[0015] As used herein, "at least one" refers to one or more, and "plurality" refers to two or more. "At least one of the following" or similar expressions refers to any combination of these terms, including any combination of single terms or multiple terms. For example, "at least one of a, b, or c" or "at least one of a, b, and c" can each refer to a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can each be one or more.

[0016] The terms used in the examples of this application are merely for the purpose of describing particular examples and are not intended to limit the scope of this application. As used in the examples of this application and the appended claims, the singular forms "a," "an," and "the" are also intended to include the plural forms unless the context clearly dictates otherwise.

[0017] The terms "first" and "second" are merely for the purpose of describing objects and distinguishing objects such as substances from one another, and should not be understood as indicating or implying relative importance or the number of technical features shown. For example, without departing from the scope of the embodiments of the present application, a first XX may be called a second XX, and similarly, a second XX may be called a first XX. Thus, a feature limited to "first" or "second" may explicitly or implicitly include one or more of the feature.

[0018] In order to solve the technical problems of the prior art that the white light generated by a white LED light source has a high blue content, a low color rendering index, and is significantly different from natural light, this application provides the following technical solution.

[0019] A first aspect of the present invention provides a full-color bionic fluorescent composition. The full-color bionic fluorescent composition of the present invention includes a first fluorescent powder, a second fluorescent powder, and a third fluorescent powder. The first fluorescent powder has an emission wavelength of 480-500nm, the second fluorescent powder has an emission wavelength greater than 500nm and less than 620nm, and the third fluorescent powder has an emission wavelength greater than 620nm. The mass ratio of the first fluorescent powder, the second fluorescent powder, and the third fluorescent powder is (15-70):(15-70):(13-70).

[0020] The full-color bionic fluorescent composition of the present embodiment is excited to generate full-color white light by blending the first fluorescent powder, the second fluorescent powder and the third fluorescent powder, which have different emission wavelengths and are distributed in the visible light wavelength range. At the same time, the mass ratio of the first fluorescent powder, the second fluorescent powder and the third fluorescent powder is adjusted to (15-70):(15-70):(13-70), so that the absolute optical power value of the blue light in this white light is low and the absolute optical power value of the cyan light is high, which can simulate natural light to a high degree, and at the same time improve the color rendering index of this white light.

[0021] The emission wavelength of the fluorescent powder refers to the wavelength corresponding to the peak of the main peak in the spectrum of the light generated when the fluorescent powder is excited by photons.

[0022] In some embodiments, the first phosphor comprises phosphor A, which has an emission wavelength of 480nm and / or 488nm-492nm; the second phosphor comprises phosphor B, which has an emission wavelength of 523nm-542nm; the third phosphor comprises phosphor C, phosphor D, phosphor E and phosphor F, which have an emission wavelength of 628nm-681nm, phosphor D has an emission wavelength of 718nm-722nm, phosphor E has an emission wavelength of 738nm-742nm, and phosphor F has an emission wavelength of 793nm-797nm.

[0023] The white light emitted by the full-color bionic fluorescent composition of the present application includes all wavelengths of visible light within the range of 400nm-800nm, even 400nm-700nm, due to the fact that the emission wavelengths of phosphor A, phosphor B, phosphor C, phosphor E and phosphor F are distributed in the visible light wavelength range, so that the white light can better simulate natural light.

[0024] In another embodiment, phosphor B comprises phosphor B1 and phosphor B2, where phosphor B1 has an emission wavelength of 523-527nm and phosphor B2 has an emission wavelength of 538-542nm. Phosphor C comprises phosphor C1, phosphor C2 and phosphor C3, where phosphor C1 has an emission wavelength of 628-632nm, phosphor C2 has an emission wavelength of 658-662nm and phosphor C3 has an emission wavelength of 677-681nm.

[0025] In the illustrative example, phosphor A includes A1 and A2, where phosphor A1 has an emission wavelength of 480nm, phosphor A2 has an emission wavelength of 490nm, phosphor B1 has an emission wavelength of specifically 525nm, phosphor B2 has an emission wavelength of specifically 540nm, phosphor C1 has an emission wavelength of specifically 630nm, phosphor C2 has an emission wavelength of specifically 660nm, phosphor C3 has an emission wavelength of specifically 679nm, phosphor D has an emission wavelength of specifically 720nm, phosphor E has an emission wavelength of specifically 740nm, and phosphor F has an emission wavelength of specifically 795nm.

[0026] The first fluorescent powder, the second fluorescent powder and the third fluorescent powder can be separated or mixed with each other. By separating the first fluorescent powder, the second fluorescent powder and the third fluorescent powder from each other, the mass ratio of the fluorescent powders with different emission wavelengths in the full-color bionic fluorescent composition of the embodiment of the present application can be flexibly adjusted as required.

[0027] For example, in some embodiments, the mass ratio between the first phosphor powder, the second phosphor powder and the third phosphor powder can be controlled to be (15-70):(15-70):(13-60), even (25-60):(25-55):(13-60), or even (31-40):(31-40):(13-60). The mass ratio between phosphor powder B1 and phosphor powder B2 in the second phosphor powder can be controlled to be (20-85):(10-85), even (30-75):(20-75), or even (35-70):(25-70). Furthermore, the mass ratio of phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E and phosphor F in the third phosphor can be controlled to be (3-35):(1-45):(3-60):(7-90):(7-60):(1-70), further to be (7-30):(3-40):(3-50):(10-90):(10-60):(1-60), or even to be (7-20):(3-30):(3-40):(20-80):(20-50):(1-50).

[0028] By controlling the mass ratio between the first fluorescent powder, the second fluorescent powder and the third fluorescent powder, and the mass ratio of each component of the second fluorescent powder and the mass ratio of each component of the third fluorescent powder within this range, the absolute optical power values ​​of different wavelength bands of the white light generated by the full-color bionic fluorescent composition of the embodiment of the present application can be adjusted, and the spectrum of the generated white light can be optimized. For example, the optical power of the red light in the wavelength range of 640nm-700nm in this white light is high and the optical power of the blue light is lower, so that this white light is closer to natural light, and when this white light is used for lighting, it is more comfortable and authentic to the environment and objects, and reduces the damage to the human body.

[0029] In some embodiments, the phosphor C in the third phosphor layer, the first phosphor layer, and the second phosphor layer form a first mixture, and the phosphor D, phosphor E, and phosphor F in the third phosphor layer form a second mixture, and the first mixture and the second mixture are provided separately.

[0030] In another embodiment, the emission wavelength of phosphor A in the first mixture may be 490nm (A2), phosphor B may contain phosphor B3, which may have an emission wavelength of 532nm-537nm, specifically 535nm, phosphor C may contain the above phosphor C2, which may have an emission wavelength of 658nm-662nm, specifically 660nm, phosphor D in the second mixture may have an emission wavelength of 720nm, phosphor E may have an emission wavelength of 740nm, and phosphor F may have an emission wavelength of 795nm.

[0031] By dividing the full-color bionic fluorescent composition into a first mixture and a second mixture, the first mixture and the second mixture contain components with different emission wavelengths. During film formation, the first mixture and the second mixture can be formed separately, and the mass ratio of the first mixture to the second mixture can be flexibly adjusted. This further allows the spectrum of the white light generated by the full-color bionic fluorescent composition to be adjusted, optimizing the spectral distribution of the generated white light and making the white light closer to natural light.

[0032] In some embodiments, the mass ratio of phosphor A, phosphor B, and phosphor C in the first mixture can be controlled to be (10-80):(15-85):(1-40), even (10-70):(15-85):(1-35), or even (15-60):(20-75):(1-30). The mass ratio of phosphor D, phosphor E, and phosphor F in the second mixture can be controlled to be (20-120):(10-90):(1-100), even (30-100):(15-70):(1-80), or even (40-90):(20-60):(1-70).

[0033] By controlling the mass ratio of each component in the first mixture and the mass ratio of each component in the second mixture, the spectrum of the generated white light can be adjusted. By controlling the mass ratio of each component in the first mixture and the mass ratio of each component in the second mixture within this range, the spectrum of the generated white light can be optimized. For example, by increasing the mass ratio of phosphor C, specifically phosphor C2, in the first mixture, the optical power of the red light in the wavelength range of 640 nm to 700 nm of the generated white light can be increased, making it closer to natural light.

[0034] In some embodiments, the first phosphor powder may be specifically GaYAG phosphor powder. In an exemplary embodiment, the GaYAG phosphor powder may be gallium-doped yttrium aluminum garnet, specifically yttrium aluminum gallium pentaoxygen dodecyl [Y(Al,Ga)O]. 12For example, the fluorescent powder A (specifically, A1 or A2) may be gallium-doped yttrium aluminum garnet, specifically, yttrium trialuminum gallium pentaoxygen dodecyl [Y3(Al,Ga)5O 12 ].

[0035] In some embodiments, the second phosphor powder may be an oxynitride phosphor powder. In an illustrative example, the oxynitride phosphor powder may be, but is not limited to, BaSi2O2N2 (barium strontium dioxygen dinitrogen diisopropyl, 1222). For example, phosphor powder B (specifically, B1, B2, or B3) may be BaSi2O2N2 (barium strontium dioxygen dinitrogen diisopropyl, 1222).

[0036] In some embodiments, the third phosphor powder may include at least one of a nitride red powder and a fluoride red powder. In an illustrative example, the nitride red powder may include, but is not limited to, (Ca,Sr)AlSiN3 (Calcium Strontium Aluminum Silicon Nitride, 1113), and the fluoride red powder may include, but is not limited to, K2SiF6:Mn 4+ (potassium silicofluoride), for example, phosphor powder C (specifically, C1, C3 or C3), phosphor powder D, phosphor powder E and phosphor powder F may include, but are not limited to, (Ca,Sr)AlSiN3 and K2SiF6:Mn 4+ It may contain at least one of the following.

[0037] In addition, fluorescent powders of various emission wavelengths, such as fluorescent powder A, fluorescent powder B, fluorescent powder C, fluorescent powder D, fluorescent powder E and fluorescent powder F, can be directly purchased commercially according to the emission wavelength.

[0038] Each of the fluorescent powders A, B, C, D, E, and F may specifically include, but is not limited to, several compounds, and may be a pure product containing only a single compound or a mixture containing multiple compounds. For example, fluorescent powder B may further include fluorescent powder B1 and fluorescent powder B2, and fluorescent powder C may further include fluorescent powder C1, fluorescent powder C2, and fluorescent powder C3. Of course, fluorescent powder B1, fluorescent powder B2, fluorescent powder C1, fluorescent powder C2, and fluorescent powder C3 may be a pure product containing only a single compound or a mixture containing multiple compounds. For example, fluorescent powder C1 may be (Ca,Sr)AlSiN3, or (Ca,Sr)AlSiN3 and K2SiF6:Mn 4+ It may also be a mixture containing

[0039] In the full-color bionic fluorescent compositions in each of the above embodiments, the particle sizes of the first fluorescent powder, the second fluorescent powder and the third fluorescent powder are independently 50 μm or less, and may be 5 μm-50 μm or even 10 μm-25 μm.

[0040] By controlling the particle size of the first fluorescent powder, the second fluorescent powder and the third fluorescent powder within this range, after the full-color bionic fluorescent composition of the embodiment of the present application is formed into a film, the film layer has better uniformity and the optical refractive index is smaller, which improves the light efficiency of the manufactured light source.

[0041] A second aspect of the present embodiment provides a full-color bionic fluorescent film, which includes a film-forming material and a full-color bionic fluorescent composition of the present embodiment dispersed in the film-forming material.

[0042] The white light generated by excitation of the full-color phosphor screen of the embodiment of the present application is full-color white light, and the spectral distribution within the visible light wavelength band is similar to that of natural light.

[0043] In some embodiments, the full-color bionic fluorescent film of the present embodiment is a single layer. By controlling the full-color bionic fluorescent film of the present embodiment to be a single layer, the full-color bionic fluorescent film of the present embodiment can be produced by mixing the above-mentioned full-color bionic fluorescent composition during production, which has a simple operation process, good reproducibility of product quality, and ease of production.

[0044] In some embodiments, the coating material may be silica gel or epoxy resin. These coating materials, such as silica gel, have excellent properties such as good light transmittance, resistance to atmospheric aging and resistance to ultraviolet ray aging, so that the full-color bionic fluorescent film of the present application has good light transmittance and is not easily yellowed due to aging during use.

[0045] In some embodiments, the full-color bionic fluorescent film of the embodiments of the present application may include a composite film layer formed by stacking two or more single film layers, in which the thickness of the single film layer can be made thinner, and the components contained in different single film layers can be the same or different, so that the components of the full-color bionic fluorescent composition contained in the full-color bionic fluorescent film can be flexibly adjusted according to the light effect and the spectrum of white light.

[0046] The full-color bionic fluorescent film of the embodiment of the present application can be formed by a lamination method and / or a film spraying method. When the full-color bionic fluorescent film of the embodiment of the present application is a composite film layer, when forming the film by a lamination method, a plurality of single film layers can be first produced, and then the plurality of single film layers can be sequentially stacked and arranged, and the plurality of single film layers can be combined by a method such as vacuum lamination to form the full-color bionic fluorescent film. When forming the film by a film spraying method, the composite film layer can be formed by sequentially spraying each single film layer.

[0047] In addition, when the full-color bionic fluorescent film of the embodiment of the present application is the above-mentioned composite film layer, the arrangement order of the multiple single film layers in the composite film layer is not limited, and the single film layers may be arranged in order of the magnitude of the optical refractive index, or in order of the emission wavelength.

[0048] In some embodiments, the full-color bionic fluorescent film of the embodiments of the present application is the above-mentioned composite film layer, which includes a first film layer, a second film layer and a third film layer stacked together, the first film layer includes a first fluorescent powder, the second film layer includes a second fluorescent powder, and the third film layer includes a third fluorescent powder, where the first fluorescent powder, the second fluorescent powder and the third fluorescent powder are the first fluorescent powder, the second fluorescent powder and the third fluorescent powder in the above-mentioned embodiments of the present application, and are not described here due to space limitations.

[0049] By configuring the first film layer to contain the first fluorescent powder, the second film layer to contain the second fluorescent powder, and the third film layer to contain the third fluorescent powder, the mass ratio of the first fluorescent powder, the second fluorescent powder, and the third fluorescent powder, as well as the concentrations of the first fluorescent powder, the second fluorescent powder, and the third fluorescent powder, can be flexibly adjusted during film formation, so that the generated white light spectrum is closer to that of natural light.

[0050] In some embodiments, the concentration of the first phosphor powder in the first film layer can be controlled to be 30%-85%, further 40%-75%, or even 60%-69%, where the concentration of the first phosphor powder is the ratio of the mass of the first phosphor powder to the total mass of the first phosphor powder and the coating material.

[0051] The concentration of the second fluorescent powder in the second film layer can be controlled to be 30%-85%, further 45%-75%, or even 60%-69%, where the concentration of the second fluorescent powder is the ratio of the mass of the second fluorescent powder to the total mass of the second fluorescent powder and the coating material.

[0052] Furthermore, the concentration of the third fluorescent powder in the third film layer can be controlled to be 40%-87%, further 50%-80%, or further 60%-69%, where the concentration of the third fluorescent powder is the ratio of the mass of the third fluorescent powder to the total mass of the third fluorescent powder and the coating material.

[0053] The concentration of the first, second and third phosphor powders determines the color temperature of the generated white light. Under the condition that the compounding ratio of the phosphor powders and the film thickness are constant, the higher the concentration, the lower the color temperature, and the lower the concentration, the higher the color temperature.

[0054] In another embodiment, the full-color bionic fluorescent film of the present invention is the above-mentioned composite film layer, and includes a fourth film layer and a fifth film layer stacked together, the fourth film layer including a first mixture, and the fifth film layer including a second mixture, where the first mixture and the second mixture are the first mixture and the second mixture in the above-mentioned embodiment of the present invention, and the description thereof is omitted here.

[0055] In the prior art white light source, it is difficult to improve the optical power value of red light with a wavelength greater than 640 nm. The second mixture mainly generates red light, and the fourth and fifth film layers allow the proportion of the second mixture to be flexibly adjusted according to the light efficiency, thereby improving the optical power value of red light with a wavelength greater than 640 nm in the white light generated by the full-color bionic fluorescent film of the embodiment of the present application, and improving the similarity of the white light to natural light.

[0056] In some embodiments, the concentration of the first mixture in the fourth film layer can be controlled to 40%-85%, further 40%-80%, or even 40%-75%, where the concentration of the first mixture is the ratio of the mass of the first mixture to the total mass of the first mixture and the film-forming material.The concentration of the second mixture in the fifth film layer can be controlled to 15%-85%, further 20%-80%, or even 30%-75%, where the concentration of the second mixture is the ratio of the mass of the second mixture to the total mass of the second mixture and the film-forming material.

[0057] By controlling the concentrations of the first mixture and the second mixture within this range, the spectrum of different wavelength bands in the white light generated by the full-color bionic fluorescent film of the embodiment of the present application becomes closer to natural light.

[0058] In some embodiments, the full-color bionic fluorescent film of the present application can be deposited by laminating and / or film spraying methods.

[0059] In some embodiments, the full-color bionic fluorescent film of the present application is formed by lamination, and the thickness can be controlled to 0.06 mm-0.15 mm. In a further exemplary embodiment, the thicknesses of the first film layer, the second film layer, and the third film layer can be independently controlled to 0.06 mm-0.15 mm. In another exemplary embodiment, the thicknesses of the fourth film layer and the fifth film layer can be independently controlled to 0.06 mm-0.15 mm.

[0060] In some embodiments, the full-color bionic fluorescent film of the present application is deposited by a film spraying method, and the film thickness can be controlled to 0.001 mm-0.01 mm, further 0.002 mm-0.006 mm, or even 0.002 mm-0.003 mm. In a further exemplary embodiment, the film thicknesses of the first film layer, the second film layer, and the third film layer can be independently controlled to 0.06 mm-0.15 mm, further 0.002 mm-0.006 mm, or even 0.002 mm-0.003 mm. In another exemplary embodiment, the film thicknesses of the fourth film layer and the fifth film layer can be independently controlled to 0.001 mm-0.01 mm, further 0.002 mm-0.006 mm, or even 0.002 mm-0.003 mm.

[0061] By controlling the thickness of the first, second, third, fourth, and fifth layers within this range, the particle size is closer to the particle size of the full-color bionic fluorescent composition particles, further reducing the refraction that occurs when the excitation light propagates through each single layer, thereby maximizing the reach of the excitation light to each single layer. At the same time, the refraction that occurs when the visible light generated by the excitation of the fluorescent powder in each single layer propagates through different single layers is reduced, allowing the visible light to maximize the reach of the surface away from the chip of the full-color bionic fluorescent film, thereby improving the light efficiency and the optical power of the generated white light. The thicknesses of the first, second, and third layers can be the same or different, and those skilled in the art can adjust the thickness according to their needs or light efficiency. Accordingly, the thicknesses of the fourth and fifth layers can be the same or different, and can be selected according to actual needs.

[0062] A third aspect of the present embodiment provides a full-color bionic light source, which includes at least one light-emitting unit, the light-emitting unit including a chip and a full-color bionic fluorescent film disposed in the optical path of the chip, and the full-color bionic fluorescent film is the full-color bionic fluorescent film of the above-mentioned embodiment of the present application.

[0063] The full-color bionic light source of the embodiment of the present application uses a chip to generate excitation light, which excites the full-color bionic fluorescent film of the embodiment of the present application to generate white light with low blue light, high red light power in the wavelength range of 640nm-700nm, and high color rendering index, which highly simulates natural light and improves human comfort during use.

[0064] In some examples, spectral detection has shown that the white light produced by the full-color bionic light source has one of the following spectral characteristics: The absolute spectral power value of violet light in the wavelength band of 380nm-435nm is less than 0.45. The absolute spectral power value of blue light in the wavelength band of 435 nm-475 nm is greater than 0.40 and less than 0.80. The absolute spectral power value of blue light in the wavelength band of 475nm-492nm is greater than 0.30. The absolute spectral power value of orange light in the wavelength band of 597nm-622nm is greater than 0.80. The absolute spectral power value of red light in the wavelength band of 622nm-700nm is greater than 0.70.

[0065] Further detection revealed that the color temperature of the white light generated by the full-color bionic light source of the embodiment of the present application was less than 4000K, the absolute optical power value of the violet light in the wavelength band of 380nm-435nm was less than 0.40, the absolute optical power value of the blue light in the wavelength band of 435nm-475nm was less than 0.65, the absolute optical power value of the cyan light in the wavelength band of 475nm-492nm was greater than 0.30, the absolute optical power value of the green light in the wavelength band of 492nm-577nm was less than 0.7, the absolute optical power value of the yellow light in the wavelength band of 577nm-597nm was less than 0.80, the absolute optical power value of the orange light in the wavelength band of 597nm-622nm was greater than 0.80, and the absolute spectral power of the red light in the wavelength band of 622nm-700nm was greater than 0.80.

[0066] Furthermore, the color temperature of the white light generated by the full-color bionic light source of the embodiment of the present application is 2700K-3000K, the absolute optical power value of the violet light in the wavelength band of 380nm-435nm is less than 0.35, the absolute optical power value of the blue light in the wavelength band of 435nm-475nm is greater than 0.40, the absolute optical power value of the cyan light in the wavelength band of 475nm-492nm is greater than 0.45, the absolute optical power value of the green light in the wavelength band of 492nm-577nm is greater than 0.50, the absolute optical power value of the yellow light in the wavelength band of 577nm-597nm is greater than 0.75, and the absolute spectral power of the red light in the wavelength band of 622nm-700nm is greater than 0.80.

[0067] In another embodiment, the color temperature of the white light generated by the full-color bionic light source of the embodiment of the present application is 4000K-4200K, the absolute optical power value of the violet light in the wavelength band of 380nm-435nm is less than 0.40, the absolute optical power value of the blue light in the wavelength band of 435nm-475nm is less than 0.65, the absolute optical power value of the cyan light in the wavelength band of 475nm-492nm is greater than 0.60, the absolute optical power value of the green light in the wavelength band of 492nm-577nm is greater than 0.65, the absolute optical power value of the yellow light in the wavelength band of 577nm-597nm is greater than 0.80, the absolute optical power value of the orange light in the wavelength band of 597nm-622nm is greater than 0.8, and the absolute spectral power of the red light in the wavelength band of 622nm-700nm is greater than 0.80.

[0068] In another embodiment, the color temperature of the white light generated by the full-color bionic light source of the embodiment of the present application is 5500K-6000K, the absolute optical power value of the violet light in the wavelength band of 380nm-435nm is less than 0.45, the absolute optical power value of the blue light in the wavelength band of 435nm-475nm is less than 0.80, the absolute optical power value of the cyan light in the wavelength band of 475nm-492nm is greater than 0.70, the absolute optical power value of the green light in the wavelength band of 492nm-577nm is greater than 0.80, the absolute optical power value of the yellow light in the wavelength band of 577nm-597nm is greater than 0.80, the absolute optical power value of the orange light in the wavelength band of 597nm-622nm is greater than 0.80, and the absolute spectral power of the red light in the wavelength band of 622nm-700nm is greater than 0.70.

[0069] In conventional white LED light sources, under different color temperature conditions, the optical power of red light is difficult to increase, and at low color temperatures (color temperatures of 2700K-3200K), the optical power of blue light and cyan light is difficult to increase, and at high color temperatures (for example, when the color temperature is 4000K or higher), the optical power of blue light and the optical power of cyan light are difficult to decrease, resulting in low similarity between the generated white light and natural light.By controlling the optical power of different wavelength bands at different color temperatures of the white light generated by the full-color bionic light source of the embodiment of the present application to be within the above ranges, the white light generated by the full-color bionic light source of the embodiment of the present application can closely resemble natural light.

[0070] The full-color bionic fluorescent film disposed in the optical path of the chip may be the above-mentioned single film layer or the above-mentioned composite film layer formed by including multiple single film layers. In some embodiments, the full-color bionic fluorescent film includes a composite film layer, and the single film layers included in the composite film layer may be arranged in ascending order of optical refractive index and away from the chip, i.e., the single film layers with smaller optical refractive indexes are closer to the chip, and the single film layers with larger optical refractive indexes are farther from the chip. By arranging the single film layers with smaller optical refractive indexes close to the chip, the light beam from the light source propagates from an optically sparse medium to an optically dense medium, avoiding the problem that the incident angle of the light beam is greater than the critical angle of total reflection, causing the light beam to be reflected and unable to exit the light-emitting unit, resulting in low brightness of the full-color bionic light source.

[0071] In some embodiments, as shown in FIG. 1 , the full-color bionic light source of the present embodiment includes multiple light-emitting units, specifically, three light-emitting units, namely, a first light-emitting unit 10, a second light-emitting unit 20, and a third light-emitting unit 30.

[0072] Here, the first light-emitting unit 10 includes a first chip 11 and a first full-color bionic fluorescent film 12, the second light-emitting unit 20 includes a second chip 21 and a second full-color bionic fluorescent film 22, and the third light-emitting unit 30 includes a third chip 31 and a third full-color bionic fluorescent film 32.

[0073] In some embodiments, the emission wavelengths of the first chip 11, the second chip 21, and the third chip 31 may be 440 nm-475 nm, or even 440 nm-460 nm, or even 452 nm-455 nm. The emission wavelengths of the three chips may be the same or different, and may be selected and adjusted according to actual applications. In an illustrative example, the emission wavelength of the first chip 11 is 452 nm, the emission wavelength of the second chip 21 is 455 nm, and the emission wavelength of the third chip 31 is 458 nm. Adjusting the emission wavelengths of the chips can excite the full-color bionic phosphor film included in the full-color bionic light source of the embodiment of the present application to emit light, adjust and control the optical power of the 435 nm-440 nm blue light in the white light emitted by the full-color bionic light source of the embodiment of the present application, reduce damage to the retina, increase the spectral width of the white light in the range of 400 nm-800 nm, and adjust the color temperature of the light.

[0074] The emission wavelength of the chip refers to the wavelength at the peak value of the main peak in the spectrum of the light generated when the chip is excited by an electric current.

[0075] In some embodiments, the first full-color bionic fluorescent film 12, the second full-color bionic fluorescent film 22, and the third full-color bionic fluorescent film 32 are all the full-color bionic fluorescent films of the above-mentioned embodiments of the present application. For example, they may be a composite film including a first film layer, a second film layer, and a third film layer, and the thicknesses of the first film layer, the second film layer, and the third film layer may be controlled to be 0.06 mm-0.15 mm, respectively.

[0076] In another embodiment, the first full-color bionic fluorescent film 12 includes a first film layer, a second film layer and a third film layer, the second full-color bionic fluorescent film 22 includes a first film layer, a second film layer and a third film layer, and the third full-color bionic fluorescent film 32 includes a first film layer, a second film layer and a third film layer, wherein the mass ratio of the first fluorescent powder in the first film layer to the second fluorescent powder in the second film layer and the third fluorescent powder in the third film layer can be (15-70):(15-70):(13-60), or even (25-60):(25-55):(13-60), or even (31-40):(31-40):(13-60). In the first film layer, the concentration of the first phosphor powder can be 30%-85%, even 40%-75%, or even 60%-69%, in the second film layer, the concentration of the second phosphor powder can be 30%-85%, even 45%-75%, or even 60%-69%, in the third film layer, the concentration of the third phosphor powder can be 40%-87%, even 50%-80%, or even 60%-69%.

[0077] In an illustrative example, the emission wavelengths of the first chip 11, the second chip 21, and the third chip 31 are independently 440nm-460nm, the first full-color bionic fluorescent film 12 includes a first film layer, a second film layer, and a third film layer, the second full-color bionic fluorescent film 22 includes a first film layer, a second film layer, and a third film layer, and the third full-color bionic fluorescent film 32 includes a first film layer, a second film layer, and a third film layer. The mass ratio of the first fluorescent powder in the first film layer to the second fluorescent powder in the second film layer to the third fluorescent powder in the third film layer is (25-60):(25-55):(13-60), and in the first film layer, the first fluorescent powder accounts for 40%-75% of the total mass of the film material and the first fluorescent powder; in the second film layer, the second fluorescent powder accounts for 45%-75% of the total mass of the film material and the second fluorescent powder; and in the third film layer, the third fluorescent powder accounts for 50%-80% of the total mass of the film material and the third fluorescent powder.

[0078] In another embodiment, the first full-color bionic fluorescent film 12, the second full-color bionic fluorescent film 22, and the third full-color bionic fluorescent film 32 are all composite film layers including the above-mentioned fourth film layer and fifth film layer, in which the concentration of the first mixture in the fourth film layer can be 40%-85%, further 40%-80%, or further 40%-75%, and the concentration of the second mixture in the fifth film layer can be 15%-85%, further 20%-80%, or further 30%-75%.

[0079] In an illustrative example, the emission wavelengths of the first chip 11, the second chip 21, and the third chip 31 are independently 440 nm-460 nm, the first full-color bionic fluorescent film 12 includes a fourth film layer and a fifth film layer, the second full-color bionic fluorescent film 22 includes a fourth film layer and a fifth film layer, and the third full-color bionic fluorescent film 32 includes a fourth film layer and a fifth film layer. The mass ratio of the first mixture in the fourth film layer to the second mixture in the fifth film layer is (15-60):(20-80), and in the fourth film layer, the first mixture accounts for 40%-80% of the total mass of the first mixture and the film-forming material, and in the fifth film layer, the second mixture accounts for 20%-80% of the total mass of the second mixture and the film-forming material.

[0080] In order to make the details and operations of the above embodiments of the present application more easily understood by those skilled in the art, and to highlight the advanced performance of the full-color bionic fluorescent composition, full-color bionic fluorescent film and full-color bionic light source in the embodiments of the present application, the above technical solutions are illustrated and described in the following several embodiments.

[0081] 1. Example of full-color bionic fluorescent composition Examples A1 to A4

[0082] Examples A1-A4 provide full-color bionic fluorescent compositions with particle sizes of 10 μm-25 μm, respectively.

[0083] The full-color bionic fluorescent compositions of Examples A1 to A4 all comprise first fluorescent powder, second fluorescent powder and third fluorescent powder arranged separately, and the mass ratio of the first fluorescent powder, second fluorescent powder and third fluorescent powder is shown in Table 1 below.

[0084] The first phosphor contains phosphor A2, which is Y3(Al,Ga)5O with an emission wavelength of 490 nm. 12 is.

[0085] The second phosphor powder includes phosphor powder B1 and phosphor powder B2, where phosphor powder B1 is BaSi2O2N2 with an emission wavelength of 525nm, and phosphor powder B2 is BaSi2O2N2 with an emission wavelength of 540nm. The mass ratio of phosphor powder B1 to phosphor powder B2 is shown in Table 1.

[0086] The third phosphors include phosphor C1, phosphor C2, phosphor C3, phosphor D, phosphor E, and phosphor F. Phosphor C1 is (Ca,Sr)AlSiN3 with an emission wavelength of 630nm, phosphor C2 is (Ca,Sr)AlSiN3 with an emission wavelength of 660nm, phosphor C3 is (Ca,Sr)AlSiN3 with an emission wavelength of 679nm, phosphor D is (Ca,Sr)AlSiN3 with an emission wavelength of 720nm, phosphor E is (Ca,Sr)AlSiN3 with an emission wavelength of 740nm, and phosphor F is (Ca,Sr)AlSiN3 with an emission wavelength of 795nm. The mass ratios of phosphors C1, C2, C3, phosphor D, phosphor E, and phosphor F are shown in Table 1 below.

[0087] [Table 1]

[0088] Examples A5 to A8 Examples A5 to A8 provide full-color bionic fluorescent compositions, which are substantially the same as the full-color bionic fluorescent compositions of Examples A1 to A4, respectively. That is, the full-color bionic fluorescent composition of Example A5 is the same as the full-color bionic fluorescent composition of Example A1, and similarly, the full-color bionic fluorescent composition of Example A8 is the same as the full-color bionic fluorescent composition of Example A4.

[0089] The main difference between the full-color bionic fluorescent compositions of Examples A5 to A8 and the full-color bionic fluorescent compositions of Examples A1 to A4 is that the first fluorescent powder, the second fluorescent powder and the third fluorescent powder in the full-color bionic fluorescent compositions of Examples A5 to A8 form a mixture.

[0090] Examples A9 to A14 Examples A9-A14 provide full-color bionic fluorescent compositions with particle sizes of 10 μm-25 μm, respectively.

[0091] The full-color bionic fluorescent compositions of Examples A9-A14 include a first mixture and a second mixture that are provided separately.

[0092] The first mixtures of Examples A9 to A13 contain phosphor powder A2, phosphor powder B3 and phosphor powder C2, the mass ratio of which is shown in Table 2. Here, phosphor powder B3 is BaSi2O2N2 with an emission wavelength of 535 nm, and phosphor powder A2 and phosphor powder C2 are the same as phosphor powder A2 and phosphor powder C2 in Example A1.

[0093] The first mixture of Example A14 includes phosphor powder A1, phosphor powder A2, phosphor powder B3, phosphor powder B4, phosphor powder C1 and phosphor powder C2, the mass ratio of which is shown in Table 2. Here, phosphor powder A1 is Y(Al,Ga)O with an emission wavelength of 480 nm. 12 The fluorescent powder B4 is a silicate Ba2(YxLayEu1xy)8(SiO4)6O2 with an emission wavelength of 600 nm.

[0094] The second mixtures of Examples A9 to A14 contain phosphor D, phosphor E and phosphor F, the mass ratios of which are shown in Table 2. Here, phosphor D, phosphor E and phosphor F are the same as those of Example A1.

[0095] Examples A15 to A17 Examples A15 to A17 provide full-color bionic fluorescent compositions, each with a particle size of 10 μm-25 μm. The full-color bionic fluorescent compositions of Examples A15 and A16 contain a mixture of phosphor A2, phosphor B5, phosphor C2, and phosphor E, with the weight ratios shown in Table 2 below. Phosphor B5 is BaSi2O2N2 with an emission wavelength of 530 nm.

[0096] The full-color bionic fluorescent composition of Example A17 includes fluorescent powder A2, fluorescent powder B3, fluorescent powder C3 and fluorescent powder E mixed together, the mass ratio of which is shown in Table 2 below, where fluorescent powder B3 is the same as fluorescent powder B3 in Example A9.

[0097] Phosphor A2, phosphor C3 and phosphor E in Examples A15 to A17 are the same as phosphor A2, phosphor C3 and phosphor E in Example A1.

[0098] [Table 2]

[0099] Comparative Example A1 This comparative example provides a full-color bionic phosphor composition with particle sizes of 10 μm-25 μm, which includes phosphor powders B, C1, C2, C3, D, E and F mixed together in a weight ratio of 20:20:20:2:32:6:0.

[0100] Here, fluorescent powder B3 in this comparative example is the same as fluorescent powder B3 in example A9, and fluorescent powders C1, C2, C3, D, E and F in this comparative example are the same as fluorescent powders C1, C2, C3, D, E and F in example A1.

[0101] Comparative example A2 This comparative example provides a full-color bionic fluorescent composition having a particle size of 10 μm-25 μm. The full-color bionic fluorescent composition of this comparative example includes a first mixture and a second mixture that are separated from each other.

[0102] The first mixture includes phosphor B3, phosphor C1 and phosphor C2 in a mass ratio of 10:50:40, and the second mixture includes phosphor C3, phosphor D, phosphor E and phosphor F in a mass ratio of 20:40:40:0.

[0103] Fluorescent powders B3, C1, C2, C3, D, E and F in this comparative example are the same as fluorescent powders B3, C1, C2, C3, D, E and F in comparative example A1.

[0104] 2. Example of full-color bionic fluorescent screen Examples B1 to B4 Examples B1 to B4 each provide a full-color bionic fluorescent film, which has a three-layer structure and includes a first film layer, a second film layer, and a third film layer stacked in order, where the first film layer includes a first fluorescent powder and a silica gel coating material, the second film layer includes a second fluorescent powder and a silica gel coating material, and the third film layer includes a third fluorescent powder and a silica gel coating material.

[0105] In Example B1, the first fluorescent powder is the first fluorescent powder in Example A1, the second fluorescent powder is the second fluorescent powder in Example A1, and the third fluorescent powder is the third fluorescent powder in Example A1; in Example B2, the first fluorescent powder is the first fluorescent powder in Example A2, the second fluorescent powder is the second fluorescent powder in Example A2, and the third fluorescent powder is the third fluorescent powder in Example A2; similarly, in Example B4, the first fluorescent powder is the first fluorescent powder in Example A4, the second fluorescent powder is the second fluorescent powder in Example A4, and the third fluorescent powder is the third fluorescent powder in Example A4.

[0106] For the film forming methods of the full-color bionic fluorescent films of Examples B1 to B4, the thickness and first fluorescent powder concentration of the first film layer, the thickness and second fluorescent powder concentration of the second film layer, and the thickness and third fluorescent powder concentration of the third film layer, please refer to Table 3.

[0107] Examples B5 to B8 and Examples B15 to B17 Examples B5-B8 and B15-B17 provide full-color bionic fluorescent films, each of which has a single-layer structure and includes a full-color bionic fluorescent composition and silica gel as a coating material. The coating methods, thicknesses, and concentrations of the full-color bionic fluorescent composition for these full-color bionic fluorescent films are shown in Table 3.

[0108] The full-color bionic fluorescent composition in Example B5 is the full-color bionic fluorescent composition in Example A5, and similarly, the full-color bionic fluorescent composition in Example B8 is the full-color bionic fluorescent composition in Example A8, the full-color bionic fluorescent composition in Example B15 is the full-color bionic fluorescent composition in Example A15, and the full-color bionic fluorescent composition in Example B17 is the full-color bionic fluorescent composition in Example A17.

[0109] Examples B9 to B14 Examples B9 to B12 each provide a full-color bionic fluorescent film, which has a two-layer structure and includes a fourth film layer and a fifth film layer, where the fourth film layer includes a film-forming material silica gel and a first mixture, and the fifth film layer includes a film-forming material silica gel and a second mixture.

[0110] In Example B9, the first mixture is the first mixture in Example A9 and the second mixture is the second mixture in Example A9; in Example B10, the first mixture is the first mixture in Example A10 and the second mixture is the second mixture in Example A10; similarly, in Example B12, the first mixture is the first mixture in Example A12 and the second mixture is the second mixture in Example A12.

[0111] For the film forming methods of the full-color bionic fluorescent films of Examples B9 to B12, the film thickness and first mixed concentration of the fourth film layer, and the film thickness and second mixed concentration of the fifth film layer, see Table 3.

[0112] Comparative Example B1 This comparative example provides a full-color bionic fluorescent film. The full-color bionic fluorescent film of this comparative example has a single-layer structure, including one single layer, which contains silica gel as a film-forming material and the full-color bionic fluorescent composition of Comparative Example A1. The full-color bionic fluorescent film of this comparative example has a thickness of 0.20 mm and a concentration of the full-color bionic fluorescent composition of 68%.

[0113] Comparative example B2 This comparative example provides a full-color bionic fluorescent film. The differences between the full-color bionic fluorescent film of this comparative example and the full-color bionic fluorescent film of Example B9 are: 1. In this comparative example, the first mixture is the first mixture in Comparative Example A2, and the second mixture is the second mixture in Comparative Example A2; 2. In this comparative example, the concentrations of the first mixture in the fourth film layer and the second mixture in the fifth film layer are as shown in Table 3.

[0114] Table 3 is referred to for the thickness of the fourth phosphor film and the first mixture concentration, and the thickness of the fifth phosphor film and the second mixture concentration in this comparative example.

[0115] [Table 3]

[0116] 3. Example of full-color bionic light source Examples C1 to C15 Examples C1-C15 provide full-color bionic light sources, each including a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit.

[0117] The first light-emitting unit includes a first chip and a first full-color bionic fluorescent film, the second light-emitting unit includes a second chip and a second full-color bionic fluorescent film, and the third light-emitting unit includes a third chip and a third full-color bionic fluorescent film.

[0118] Here, the first full-color bionic fluorescent film, the second full-color bionic fluorescent film, and the third full-color bionic fluorescent film in Example C1 are all the full-color bionic fluorescent films in Example B1, and the first full-color bionic fluorescent film, the second full-color bionic fluorescent film, and the third full-color bionic fluorescent film in Example C2 are all the full-color bionic fluorescent films in Example B2. Similarly, the first full-color bionic fluorescent film, the second full-color bionic fluorescent film, and the third full-color bionic fluorescent film in Example C14 are all the full-color bionic fluorescent films in Example B14.

[0119] In the full-color bionic light source of Example C15, the first full-color bionic fluorescent film is the full-color bionic fluorescent film in Example B15, the second full-color bionic fluorescent film is the full-color bionic fluorescent film in Example B16, and the third full-color bionic fluorescent film is the full-color bionic fluorescent film in Example B17.

[0120] The emission wavelengths of the first chip, the second chip, and the third chip in Examples C1 to C15 are shown in Table 4 below.

[0121] Comparative Examples C1 and C2 Examples C1 and C2 each provide a full-color bionic light source including a light-emitting unit, where the light-emitting unit includes a chip and a full-color bionic phosphor film. The full-color bionic phosphor film in Comparative Example C1 is the same as the full-color bionic phosphor film in Comparative Example B1, and the full-color bionic phosphor film in Comparative Example C2 is the same as the full-color bionic phosphor film in Comparative Example B2. The emission wavelengths of the chips in Comparative Examples C1 and C2 are shown in Table 4 below.

[0122] [Table 4]

[0123] Spectral measurements for each light source: Spectral measurements were carried out on the full-color bionic light sources of Examples C1 to C15, Comparative Examples C1 and C2, respectively, and the results are shown in FIGS. 2 to 18.

[0124] As shown in Figures 2-16, the spectrum of white light generated by the full-color bionic light source according to Examples C1-C15 of the present application is highly similar to that of natural light. The white light includes all visible light in the 400-700 nm wavelength range, and the white light has a low absolute optical power value of violet light in the 380-435 nm wavelength range, a high absolute optical power value of cyan light in the 475-492 nm wavelength range, and a high absolute optical power value of cyan light in the 475-492 nm wavelength range. Because the average optical power of the visible light in different wavelength ranges is close to that of natural light, the white light closely mimics natural light, has a high color rendering index, is minimally harmful to the human body, and provides a comfortable experience. The optical power value of the red light portion in the composite spectrum of the first to third light-emitting units included in the light source according to Example C15 is significantly higher than that of the red light portion in the spectrum of a conventional bimorph low-blue full-spectrum light source.

[0125] As shown in Figures 17 and 18, the white light generated by the full-color bionic light sources of Comparative Examples C1 and C2 has high optical power in the red light wavelength band, especially in the 600-700 nm wavelength band, and low optical power in the 500-600 nm wavelength band, and there is a large difference between the white light generated by the full-color bionic light sources of Comparative Examples C1 and C2 and natural light.

Claims

1. 1. A full-color bionic fluorescent composition comprising: The full-color bionic fluorescent composition comprises: a first fluorescent powder having an emission wavelength of 480 nm-500 nm; a second fluorescent powder having an emission wavelength greater than 500 nm and less than 620 nm; a third fluorescent powder having an emission wavelength of 620 nm or more; The mass ratio of the first fluorescent powder to the second fluorescent powder to the third fluorescent powder is 15-70:15-70:13-70; The first phosphor comprises phosphor A, and the emission wavelength of the phosphor A is 480 nm and / or 488 nm-492 nm; The second phosphor includes phosphor B, and the emission wavelength of the phosphor B is 523 nm-542 nm; The third phosphors include phosphor C, phosphor D, phosphor E and phosphor F, the emission wavelength of phosphor C is 628nm-681nm, the emission wavelength of phosphor D is 718nm-722nm, the emission wavelength of phosphor E is 738nm-742nm, and the emission wavelength of phosphor F is 793nm-797nm. A full-color bionic fluorescent composition characterized by:

2. The first fluorescent powder, the second fluorescent powder and the third fluorescent powder are provided separately; The second phosphor B comprises phosphor B1 and phosphor B2, and the phosphor B1 has an emission wavelength of 523nm-527nm, and the phosphor B2 has an emission wavelength of 538nm-542nm. The mass ratio of the phosphor B1 to the phosphor B2 is 20-85:10-85.

2. The full-color bionic fluorescent composition according to claim 1, wherein the phosphor C in the third phosphor comprises phosphor C1, phosphor C2 and phosphor C3, the emission wavelength of the phosphor C1 is 628nm-632nm, the emission wavelength of the phosphor C2 is 658nm-662nm, and the emission wavelength of the phosphor C3 is 677nm-681nm, and the mass ratio of the phosphor C1, the phosphor C2, the phosphor C3, the phosphor D, the phosphor E and the phosphor F is 3-35:1-45:3-60:7-90:7-60:1-70.

3. The third phosphor C, the first phosphor, and the second phosphor form a first mixture; The fluorescent powder D, the fluorescent powder E and the fluorescent powder F in the third fluorescent powder form a second mixture; In the first mixture, the mass ratio of the fluorescent powder A to the fluorescent powder B to the fluorescent powder C is 10-80:15-85:1-40; In the second mixture, the mass ratio of the fluorescent powder D to the fluorescent powder E to the fluorescent powder F is 20-120:10-90:1-100; 10. The full-color bionic fluorescent composition of claim 1, wherein the first mixture is provided separately from the second mixture.

4. The full-color bionic fluorescent composition according to any one of claims 1 to 3, wherein the particle sizes of the first fluorescent powder, the second fluorescent powder and the third fluorescent powder are independently 50 μm or less.

5. A full-color bionic fluorescent film, A full-color bionic fluorescent film comprising a film-forming material and the full-color bionic fluorescent composition according to any one of claims 1 to 4 dispersed in the film-forming material.

6. The full-color bionic fluorescent composition is the full-color bionic fluorescent composition of claim 1 or 2, and the full-color bionic fluorescent film comprises a first film layer, a second film layer and a third film layer stacked together, the first film layer contains the first fluorescent powder, the second film layer contains the second fluorescent powder, and the third film layer contains the third fluorescent powder.

7. In the first film layer, the first fluorescent powder accounts for 30%-85% of the total mass of the film-forming material and the first fluorescent powder; and / or In the second film layer, the second fluorescent powder accounts for 30%-85% of the total mass of the film forming material and the second fluorescent powder; and / or In the third film layer, the third fluorescent powder accounts for 40%-87% of the total mass of the film forming material and the third fluorescent powder; and / or The full-color bionic fluorescent film according to claim 6, characterized in that the full-color bionic fluorescent film is manufactured by a lamination method, and the thickness of any one of the first film layer, the second film layer, and the third film layer is 0.06 mm-0.15 mm; or the full-color bionic fluorescent film is manufactured by a film spray method, and the thickness of any one of the first film layer, the second film layer, and the third film layer is 0.001 mm-0.01 mm.

8. The full-color bionic fluorescent composition is the full-color bionic fluorescent composition of claim 3, and the full-color bionic fluorescent film comprises a fourth film layer and a fifth film layer stacked together, the fourth film layer containing the first mixture, and the fifth film layer containing the second mixture, wherein the particle sizes of the first fluorescent powder, the second fluorescent powder, and the third fluorescent powder are independently 50 μm or less.

9. In the fourth film layer, the first mixture accounts for 40%-85% of the total mass of the film-forming material and the first mixture; and / or In the fifth film layer, the second mixture accounts for 15-85% of the total mass of the film-forming material and the second mixture; and / or The full-color bionic fluorescent film of claim 8, wherein the full-color bionic fluorescent film is manufactured by a lamination method, and the thickness of any one of the fourth film layer and the fifth film layer is 0.06 mm-0.15 mm; or the full-color bionic fluorescent film is manufactured by a film spray method, and the thickness of any one of the fourth film layer and the fifth film layer is 0.001 mm-0.01 mm.

10. A full-color bionic light source including at least one light-emitting unit, The light-emitting unit includes a chip and a full-color bionic fluorescent screen provided in the optical path of the chip, and the full-color bionic fluorescent screen is the full-color bionic fluorescent screen according to any one of claims 5 to 9. A full-color bionic light source characterized by:

11. The full-color bionic fluorescent screen is a full-color bionic fluorescent screen according to any one of claims 6 to 9, and satisfies the following conditions: the layer having the smallest optical refractive index among the first film layer, the second film layer, and the third film layer is close to the chip, or the layer having the smallest optical refractive index among the fourth film layer and the fifth film layer is close to the chip; The full-color bionic light source according to claim 10, wherein the emission wavelength of the chip is 440nm-475nm.

12. The full-color bionic light source includes a first light-emitting unit, a second light-emitting unit and a third light-emitting unit; The first light-emitting unit includes a first chip and a first full-color bionic fluorescent screen disposed in an optical path of the first chip; The second light-emitting unit includes a second chip and a second full-color bionic fluorescent screen disposed in the optical path of the second chip; The full-color bionic light source according to claim 11, wherein the third light-emitting unit includes a third chip and a third full-color bionic fluorescent screen arranged in the optical path of the third chip.

13. the emission wavelengths of the first chip, the second chip, and the third chip are independently 440 nm-460 nm; The first full-color bionic fluorescent film includes the first film layer, the second film layer and the third film layer; the second full-color bionic fluorescent film includes the first film layer, the second film layer and the third film layer; the third full-color bionic fluorescent film includes the first film layer, the second film layer and the third film layer, and the mass ratio of the first fluorescent powder in the first film layer, the second fluorescent powder in the second film layer and the third fluorescent powder in the third film layer is: 25-60:25-55:13-60; in the first film layer, the first fluorescent powder accounts for 40%-75% of the total mass of the film material and the first fluorescent powder; in the second film layer, the second fluorescent powder accounts for 45%-75% of the total mass of the film material and the second fluorescent powder; and in the third film layer, the third fluorescent powder accounts for 50%-80% of the total mass of the film material and the third fluorescent powder.

14. the emission wavelengths of the first chip, the second chip, and the third chip are independently 440 nm-460 nm; 13. The full-color bionic fluorescent film of claim 12, wherein the first full-color bionic fluorescent film includes the fourth film layer and the fifth film layer, the second full-color bionic fluorescent film includes the fourth film layer and the fifth film layer, and the third full-color bionic fluorescent film includes the fourth film layer and the fifth film layer, wherein a mass ratio of the first mixture in the fourth film layer to the second mixture in the fifth film layer is 15-60:20-80, the first mixture accounts for 40%-80% of a total mass of the first mixture and the film-forming material in the fourth film layer, and the second mixture accounts for 20%-80% of a total mass of the second mixture and the film-forming material in the fifth film layer.

15. The white light generated by the full-color bionic light source has any one of the following spectral characteristics: The absolute spectral power value of the violet light in the wavelength band of 380 nm to 435 nm is less than 0.45; The absolute spectral power value of blue light in the wavelength band of 435 nm to 475 nm is greater than 0.40 and less than 0.80; the absolute spectral power value of the cyan light in the wavelength band of 475 nm-492 nm is greater than 0.30; The absolute spectral power value of orange light in the wavelength band of 597 nm to 622 nm is greater than 0.80; The full-color bionic light source according to any one of claims 10 to 14, characterized in that the absolute spectral power value of the red light in the wavelength band of 622 nm to 700 nm is greater than 0.

70.

16. The color temperature of the white light is less than 4000K, the absolute spectral power value of green light in the wavelength band of 492 nm-577 nm is less than 0.70, and the absolute optical power value of yellow light in the wavelength band of 577 nm-597 nm is less than 0.80; or 16. The full-color bionic light source of claim 15, wherein the color temperature of the white light is 4000K or higher, the absolute spectral power value of the green light in the wavelength band of 492nm-577nm is greater than 0.65, and the absolute optical power value of the yellow light in the wavelength band of 577nm-597nm is greater than 0.80.

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