CN116202043A - Light-emitting device - Google Patents

Abstract

The invention discloses a light-emitting device, which emits white light, wherein a spectrum curve of the white light has a first spectrum characteristic, a second spectrum characteristic and a third spectrum characteristic; the first spectral feature comprises a first peak in a wavelength range of 380-470 nm; the second spectral feature includes a second peak in a wavelength range of 470-590 nm; the third spectral feature includes a third peak in a wavelength range of 590-780 nm; the spectral intensity at the peak of the first peak is 74% -100% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 84% -110% of the spectral intensity at the peak of the third peak. The light-emitting device can achieve the aim of improving the visual freshness of aquatic products on the premise of guaranteeing white light and illumination authenticity. Thereby attracting the eyes of consumers and improving the purchasing desire of the consumers. The invention is mainly used in the technical field of light sources.

Description

Light-emitting device

Technical Field

The present invention relates to the field of light sources, and in particular, to a light emitting device.

Background

Light emitting devices for food illumination are generally required to have visual freshness that can enhance food. In the prior art, the effect of improving the visual freshness of aquatic products (foods) is poor for the aquatic products lighting lamp. For this industry, there is a need to develop a light emitting device with improved visual freshness effect for aquatic products.

Disclosure of Invention

The present invention is directed to a light emitting device that solves one or more of the problems of the prior art, and at least provides a useful choice or creation of conditions.

The invention solves the technical problems as follows: providing a light emitting device that emits white light, a spectral profile of the white light having a first spectral feature, a second spectral feature, and a third spectral feature;

the first spectral feature comprises a first peak in a wavelength range of 380nm-470 nm; the second spectral feature comprises a second peak in a wavelength range of 470nm to 590 nm; the third spectral feature comprises a third peak in a wavelength range of 590nm-780 nm;

wherein the spectral intensity at the peak of the first peak is 74% -100% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 84% -110% of the spectral intensity at the peak of the third peak.

Further, the correlated color temperature of the white light is 5000K to 6500K.

Further, the peak wavelength of the first peak is 444nm; the peak wavelength of the second peak is 496nm-497nm; the peak wavelength of the third peak is 623nm-624nm.

Further, the half-peak width of the first peak is 20nm-21nm; the half-peak width of the second peak is 34nm-41nm; the half-width of the third peak was 21nm.

Further, the correlated color temperature of the white light is 5700K or 6500K.

Further, the color coordinates of the white light are located at or below the black body radiation curve locus in the CIE1931-xy chromaticity diagram, i.e., duv.ltoreq.0.

Further, rg of the white light _cs,h9 Not less than 16%, rg of the white light _cs,h10 ≥7%。

Further, rf of the white light is more than or equal to 80.

Further, rg > 100 for the white light.

Further, the white light has a color tolerance < 5SDCM.

Further, the relative spectral intensity of the third peak is 1, wherein the relative spectral intensity at the peak of the first peak is 0.79, the relative spectral intensity at the peak of the second peak is 0.85, the half-width of the first peak is 21nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 41nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 624nm;

alternatively, the second peak spectral intensity is 1, wherein the relative spectral intensity at the peak of the first peak is 0.987, the spectral intensity at the peak of the third peak is 0.996, the half-width of the first peak is 20nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 36nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 623nm;

or the third peak spectral intensity is 1, wherein the relative spectral intensity at the peak of the first peak is 0.75, the spectral intensity at the peak of the second peak is 0.90, the half-width of the first peak is 21nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 38nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 624nm;

or the second peak spectral intensity is 1, wherein the relative spectral intensity at the peak of the first peak is 0.83, the spectral intensity at the peak of the third peak is 0.97, the half-peak width of the first peak is 20nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 34nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 623nm.

The beneficial effects of the invention are as follows: the light-emitting device can achieve the aim of improving the visual freshness of aquatic products on the premise of guaranteeing white light and illumination authenticity. Thereby attracting the eyes of consumers and improving the purchasing desire of the consumers.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

FIG. 1 is a spectral graph of sample 1;

FIG. 2 is a spectral graph of sample 2;

FIG. 3 is a spectral graph of sample 3;

FIG. 4 is a spectral graph of sample 4;

FIG. 5 is a graph showing the effect of illuminating sample 1;

FIG. 6 is a graph showing the effect of illuminating sample 2;

FIG. 7 is a view showing the effect of illumination of sample 3;

fig. 8 is a functional effect diagram of the illumination sample 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It should be noted that although functional block diagrams are depicted as block diagrams, and logical sequences are shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the block diagrams in the system. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Referring to fig. 1 to 4, a light emitting device is provided which emits white light, wherein a spectral curve of the white light has three features, herein referred to as spectral features. Spectral features refer to curve features with a special trend that are present in the spectral curve. For ease of description, the three features are referred to as a first spectral feature, a second spectral feature, and a third spectral feature, respectively.

Wherein of the three spectral features, the first spectral feature has a first peak, wherein the first peak occurs in a wavelength range of 380nm-470 nm.

The second spectral feature has a second peak, wherein the second peak occurs in a wavelength range of 470nm to 590 nm. The third spectral feature has a third peak, wherein the third peak occurs in a wavelength range of 590nm-780 nm.

For the spectral intensity relationship of the three peaks, if the spectral intensity of the third peak is set to 1, then, in this specific embodiment, the spectral intensity at the peak of the third peak is 1. The spectral intensity at the peak of the first peak is 0.74 to 1 and the spectral intensity at the peak of the second peak is 0.84 to 1.1. From the spectral intensities of the three peaks, the spectrum curve of the whole white light appears as two peaks, one sub-peak.

Experiments show that the light-emitting device can achieve the aim of improving the visual freshness of aquatic products on the premise of guaranteeing white light and illumination authenticity. Thereby attracting the eyes of consumers and improving the purchasing desire of the consumers.

In some further embodiments, the correlated color temperature of the white light emitted by the present light emitting device is in the range of 5000K to 6500K. Has higher contribution to the improvement effect of the visual freshness of aquatic products.

In some further embodiments, the peak wavelengths of the three peaks are studied and screened in a white light spectrum that has a better improvement in visual freshness of the aquatic product. When the peak wavelength of the first peak is 444nm, the peak wavelength of the second peak is in the wavelength range of 496nm to 497 nm. The peak wavelength of the third peak is in the wavelength range of 623nm to 624nm. At this time, the white light spectrum acts on the aquatic product, and the visual freshness is improved, so that the contribution degree is higher than that of other peak wavelength ranges.

Also, in some further embodiments, research and screening findings are performed on three peak half widths. When the half-width of the first peak is in the range of 20nm to 21nm, the half-width of the second peak is in the range of 34nm to 41nm, and the half-width of the third peak is in the range of 21nm. The white light spectrum acts on the aquatic product, and has higher contribution to the improvement of visual freshness compared with other half-width ranges.

The parameter Rg analysis is carried out on the white light spectrum with larger contribution to the visual freshness improvement effect of the aquatic product, and the parameter Rg analysis finds that the parameter Rg analysis has larger contribution to the visual freshness improvement of the aquatic product when the Rg of the white light is more than 100. Rg, in particular in white light _cs,h9 Parameters Rg _cs,h10 The parameters have important effect on visual freshness. For Rg _cs,h9 Parameters and Rg _cs,h10 Further investigation of the parameters found that Rg _cs,h9 Parameters and Rg _cs,h10 The parameters are in a certain range, and the improvement effect on the visual freshness of aquatic products is optimal. Wherein for Rg _cs,h9 The required ranges for the parameters are: rg _cs,h9 The parameters should be not less than 16%. For Rg _cs,h10 The required ranges for the parameters are: rg _cs,h10 The parameters should be not less than 7%.

The Duv research on the white light spectrum with larger effect of improving the visual freshness of aquatic products shows that,

based on the same color temperature, color tolerance, rg, rf, different Duv affects the freshness of the aquatic product, with best effect on the blackbody radiation curve locus (i.e. duv=0) and in the region below the blackbody radiation curve locus (i.e. Duv < 0). That is, the color coordinates of the white light lie on or below the blackbody radiation curve locus in the CIE1931-xy chromaticity diagram.

In some further embodiments, the white light has a color tolerance of < 5SDCM. The color tolerance refers to the difference between the calculated formula and the target standard, and the smaller the numerical value, the higher the accuracy. It is noted, however, that it represents only a color comparison under a certain light source, and that deviations under different light sources are not detected. The difference between the spectrum emitted by the light source and the standard spectrum. In some further embodiments, the Rf of the white light is 80 or more.

In order to better illustrate the ability of the light-emitting device to enhance the visual fresh effect of aquatic products, the present embodiment provides four spectral curves.

These four spectral curves are shown below, respectively.

The spectral curve of the white light of sample 1 is shown in fig. 1. From the spectral curve of fig. 1, the spectral curve of sample 1 starts at 380nm and climbs to point a1, which is the first peak. After the first wave crest, the curve starts to descend and reaches a point a2, wherein the point a2 is a first wave trough. And then rises back to the point a3, and the point a3 becomes a second peak. After the second peak, the curve starts to drop, reaching point a4, where a4 becomes the second trough. Then rise back to point a5, where point a5 becomes the third peak.

As a result of measurement of the point a1, the abscissa of the point a1 was 444nm, and the ordinate of the point a1 was 0.7908. That is, in the spectral curve of fig. 1, the wavelength of the first peak is 444nm, and the relative spectral intensity of the first peak is 0.7908.

As a result of measurement of the point a2, the abscissa of the point a2 was 470nm, and the ordinate of the point a2 was 0.1609. That is, in the spectral curve of fig. 1, the wavelength of the first trough is 470nm, and the relative spectral intensity of the first trough is 0.1609.

As a result of measurement of the point a3, the abscissa of the point a3 was 497nm and the ordinate of the point a3 was 0.8463. That is, in the spectral curve of fig. 1, the wavelength of the second peak is 497nm, and the relative spectral intensity of the second peak is 0.8463.

As a result of measurement of the a4 point, the abscissa of the a4 point was found to be 560 nm, and the ordinate of the a4 point was found to be 0.2760. That is, in the spectral curve of fig. 1, the wavelength of the second trough is 590nm, and the relative spectral intensity of the second trough is 0.2760.

As a result of measurement of the point a5, the abscissa of the point a5 was 624nm, and the ordinate of the point a5 was 1. That is, in the spectral curve of fig. 1, the wavelength of the third peak is 624nm, and the relative spectral intensity of the third peak is 1.

The half-width of the first peak of sample 1 was 21nm, the half-width of the second peak was 41nm, and the half-width of the third peak was 21nm. The correlated color temperature of the white light of sample 1 was 5700K, and the color coordinates of the white light of sample 1 were located in the area below the blackbody radiation curve locus in the CIE1931-xy chromaticity diagram, i.e., duv < 0.

The spectral curve of the white light of sample 2 is shown in fig. 2. From the spectral curve of fig. 2, the spectral curve of sample 1 starts at 380nm and climbs to point b1, which is the first peak. After the first wave crest, the curve starts to descend and reaches a point b2, wherein the point b2 is a first wave trough. And then rises back to the point b3, and the point b3 becomes a second peak. After the second peak, the curve starts to drop, reaching point b4, where point b4 becomes the second trough. Then rise back to point b5, where point b5 becomes the third peak.

As a result of measurement of the b1 point, the abscissa of the b1 point was 444nm and the ordinate of the b1 point was 0.9865. That is, in the spectral curve of fig. 2, the wavelength of the first peak is 444nm, and the relative spectral intensity of the first peak is 0.9865.

As a result of measurement of the b2 point, the abscissa of the b2 point was 4638 nm and the ordinate of the b2 point was 0.1746. That is, in the spectral curve of fig. 2, the wavelength of the first trough is 468nm, and the relative spectral intensity of the first trough is 0.1746.

As a result of measurement of the b3 point, the abscissa of the b3 point was 497nm and the ordinate of the b3 point was 1. That is, in the spectral curve of fig. 2, the wavelength of the second peak is 497nm, and the relative spectral intensity of the second peak is 1.

As a result of measurement of the b4 point, the abscissa of the b4 point was found to be 582nm, and the ordinate of the b4 point was found to be 0.2704. That is, in the spectral curve of fig. 2, the wavelength of the second trough is 582nm and the relative spectral intensity of the second trough is 0.2704.

As a result of measurement of the b5 point, the abscissa of the b5 point was 623nm, and the ordinate of the b5 point was 0.9963. That is, in the spectrum curve of fig. 2, the wavelength of the third peak is 623nm, and the relative spectrum intensity of the third peak is 0.9963.

The half-width of the first peak of sample 2 was 20nm, the half-width of the second peak was 36nm, and the half-width of the third peak was 21nm. The correlated color temperature of the white light of sample 2 was 6500K, and the color coordinates of the white light of sample 2 were located in the area below the blackbody radiation curve locus in the CIE1931-xy chromaticity diagram, i.e., duv < 0.

The spectral curve of the white light of sample 3 is shown in fig. 3. From the spectral curve of fig. 3, the spectral curve of sample 3 starts at 380nm and climbs to point c1, which is the first peak. After the first wave crest, the curve starts to descend and reaches a point c2, wherein the point c2 is a first wave trough. And then rises back to point c3, where point c3 becomes the second peak. After the second peak, the curve starts to drop, reaching point c4, where c4 becomes the second trough. Then, the wave rises, and reaches the point c5, and the point c5 becomes a third peak.

As a result of measurement of the c1 point, the abscissa of the c1 point was 444nm, and the ordinate of the c1 point was 0.7470. That is, in the spectral curve of fig. 3, the wavelength of the first peak is 444nm, and the relative spectral intensity of the first peak is 0.7470.

As a result of measurement of the c2 point, the abscissa of the c2 point was 469nm and the ordinate of the c2 point was 0.1553. That is, in the spectral curve of fig. 3, the wavelength of the first trough is 469nm, and the relative spectral intensity of the first trough is 0.1553.

As a result of measurement of the c3 point, the abscissa of the c3 point was 497nm and the ordinate of the c3 point was 0.8967. That is, in the spectral curve of fig. 3, the wavelength of the second peak is 497nm, and the relative spectral intensity of the second peak is 0.8967.

As a result of measurement of the c4 point, the abscissa of the c4 point was 579nm, and the ordinate of the c4 point was 0.26. That is, in the spectral curve of FIG. 3, the wavelength of the second trough is 579nm and the relative spectral intensity of the second trough is 0.26.

As a result of measurement of the c5 point, the abscissa of the c5 point was 624nm, and the ordinate of the c5 point was 1. That is, in the spectral curve of fig. 3, the wavelength of the third peak is 624nm, and the relative spectral intensity of the third peak is 1.

The half-width of the first peak of sample 3 was 21nm, the half-width of the second peak was 38nm, and the half-width of the third peak was 21nm. The correlated color temperature of the white light of sample 3 was 5700K, and the color coordinates of the white light of sample 3 were located on the black body radiation curve locus in the CIE1931-xy chromaticity diagram, i.e., duv=0.

The spectral curve of the white light of sample 4 is shown in fig. 4. From the spectral curve of fig. 4, the spectral curve of sample 4 starts at 380nm and climbs to the point d1, which is the first peak. After the first wave crest, the curve starts to descend and reaches a point d2, wherein the point d2 is the first wave trough. And then rises back to the point d3, where the point d3 becomes the second peak. After the second peak, the curve starts to drop, reaching the point d4, where the point d4 becomes the second trough. Then rise back to point d5, where d5 becomes the third peak.

As a result of measurement of the d1 point, the abscissa of the d1 point was 444nm, and the ordinate of the d1 point was 0.8279. That is, in the spectral curve of fig. 4, the wavelength of the first peak is 444nm, and the relative spectral intensity of the first peak is 0.8279.

Measurement of the d2 point shows that the abscissa of the d2 point is at 4638 nm and the ordinate of the d2 point is at 0.1667. That is, in the spectral curve of fig. 4, the wavelength of the first trough is 468nm, and the relative spectral intensity of the first trough is 0.1667.

As a result of measurement of the d3 point, the abscissa of the d3 point was 497nm and the ordinate of the d3 point was 1. That is, in the spectral curve of fig. 4, the wavelength of the second peak is 497nm, and the relative spectral intensity of the second peak is 1.

Measurement of the d4 point shows that the abscissa of the d4 point is 284 nm and the ordinate of the d4 point is 0.2407. That is, in the spectral curve of FIG. 4, the wavelength of the second trough is 584nm and the relative spectral intensity of the second trough is 0.2407.

Measurement of the d5 point revealed that the abscissa of the d5 point was 623nm and the ordinate of the d5 point was 0.9662. That is, in the spectrum curve of fig. 4, the wavelength of the third peak is 623nm, and the relative spectrum intensity of the third peak is 0.9662.

The half-width of the first peak of sample 4 was 20nm, the half-width of the second peak was 34nm, and the half-width of the third peak was 21nm. The correlated color temperature of the white light of sample 4 was 6500K, and the color coordinates of the white light of sample 4 were located on the black body radiation curve locus in the CIE1931-xy chromaticity diagram, i.e., duv=0.

The white light of the sample acts on the illumination of the aquatic product object respectively, and compared with other white light, the white light of the sample can further realize the aim of comprehensively improving the freshness of the aquatic product object on the premise of ensuring the authenticity of illumination, thereby attracting the eyes of consumers and improving the purchasing desire of the consumers.

In order to better demonstrate the illumination effect of the light emitted by the light-emitting device of the present application on a practical object, four illumination samples are further provided.

The spectral curve of the white light emitted by the light emitting means illuminating the sample 1 has a first spectral feature, a second spectral feature and a third spectral feature. The first spectral feature is having a first peak between 400nm and 460nm, the peak wavelength of the first peak being 444nm. The second spectral feature is having a second peak between 470nm and 580nm, the second peak having a peak wavelength of 496nm. The third spectrum is characterized by a third peak between 590nm and 680nm, the peak wavelength of the third peak being 623nm. The spectral intensity at the peak of the first peak is 83% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 104% of the spectral intensity at the peak of the third peak. Correlated color temperature 6500k, duv= -0.0002 of the white light, where Rg _cs,h9 =19%，Rg _cs,h10 =10%，Rg _cs,h11 =3%. The effect of the white light on the pastry is shown in figure 5. As can be seen from fig. 5, the overall effect is very good, and the fresh grayish blue of the aquatic products can be highlighted, so that the aquatic products are more appetizing.

The spectral curve of the white light emitted by the light emitting means illuminating the sample 2 has a first spectral feature, a second spectral feature and a third spectral feature. The first spectral feature is having a first peak between 400nm and 460nm, the peak wavelength of the first peak being 444nm. The second spectral feature is having a second peak between 470nm and 580nm, the second peak having a peak wavelength of 496nm. The third spectrum is characterized by a third peak between 590nm and 680nm, the peak wavelength of the third peak being 623nm. The spectral intensity at the peak of the first peak is 99% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 100% of the spectral intensity at the peak of the third peak. Correlated color temperature 6500k, duv= -0.0016 of the white light, wherein Rg _cs,h9 =16%，Rg _cs,h10 =8%，Rg _cs,h11 =3%. The effect of the white light on the pastry is shown in figure 6. As can be seen from fig. 6, the overall effect is very good, and the fresh grayish blue of the aquatic products can be highlighted, so that the aquatic products are more appetizing.

The spectral curve of the white light emitted by the light emitting means illuminating the sample 3 has a first spectral feature, a second spectral feature and a third spectral feature. The first spectral feature is having a first peak between 400nm and 460nm, the peak wavelength of the first peak being 444nm. The second spectral feature is having a second peak between 470nm and 580nm, the second peak having a peak wavelength of 496nm. The third spectrum is characterized by a third peak between 590nm and 680nm, the peak wavelength of the third peak being 624nm. The spectral intensity at the peak of the first peak is 77% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 86.3% of the spectral intensity at the peak of the third peak. The correlated color temperature of the white light is 5700K, duv= -0.0005, wherein Rg _cs,h9 =17%，Rg _cs,h10 =8%，Rg _cs,h11 =3%. The effect of the white light on the pastry is shown in figure 7. As can be seen from fig. 7, the wholeThe body effect is very good, and the fresh gray blue of the aquatic product can be highlighted, so that the aquatic product has more appetite.

The spectral curve of the white light emitted by the light emitting means illuminating the sample 4 has a first spectral feature, a second spectral feature and a third spectral feature. The first spectral feature is having a first peak between 400nm and 460nm, the peak wavelength of the first peak being 444nm. The second spectral feature is having a second peak between 470nm and 580nm, the second peak having a peak wavelength of 496nm. The third spectrum is characterized by a third peak between 590nm and 680nm, the peak wavelength of the third peak being 624nm. The spectral intensity at the peak of the first peak is 80.9% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 85.7% of the spectral intensity at the peak of the third peak. The correlated color temperature of the white light is 5700K, duv= -0.0005, wherein Rg _cs,h9 =15%，Rg _cs,h10 =7%，Rg _cs,h11 =3%. The effect of the white light on the pastry is shown in figure 8. As can be seen from fig. 8, the overall effect is very good, and the fresh grayish blue of the aquatic products can be highlighted, so that the aquatic products are more appetizing.

While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included within the scope of the present invention as defined in the appended claims.

Claims (11)

1. A light emitting device, wherein the light emitting device emits white light, and wherein a spectral profile of the white light has a first spectral feature, a second spectral feature, and a third spectral feature;

the first spectral feature comprises a first peak in a wavelength range of 380nm-470 nm; the second spectral feature comprises a second peak in a wavelength range of 470nm to 590 nm; the third spectral feature comprises a third peak in a wavelength range of 590nm-780 nm;

wherein the spectral intensity at the peak of the first peak is 74% -100% of the spectral intensity at the peak of the third peak; the spectral intensity at the peak of the second peak is 84% -110% of the spectral intensity at the peak of the third peak.

2. A light emitting device according to claim 1, wherein the white light has a correlated color temperature of 5000K to 6500K.

3. A light-emitting device according to claim 1, wherein the peak wavelength of the first peak is 444nm; the peak wavelength of the second peak is 496nm-497nm; the peak wavelength of the third peak is 623nm-624nm.

4. A light-emitting device according to claim 1, wherein the half-width of the first peak is 20nm to 21nm; the half-peak width of the second peak is 34nm-41nm; the half-width of the third peak was 21nm.

5. A light emitting device according to claim 1, wherein the white light has a correlated color temperature of 5700K or 6500K.

6. A light-emitting device according to claim 1, wherein the white light has a color coordinate located on the black body radiation curve locus in the CIE1931-xy chromaticity diagram or in the region below it, i.e. duv+.0.

7. A light-emitting device according to claim 1, wherein Rg of the white light is as follows _cs,h9 Not less than 16%, rg of the white light _cs,h10 ≥7%。

8. A light-emitting device according to claim 1, wherein the white light has Rf > 80.

9. A light emitting device according to claim 1 wherein Rg > 100 for said white light.

10. A light emitting device according to claim 1, wherein the white light has a color tolerance of < 5SDCM.

11. A light-emitting device according to claim 1, wherein the relative spectral intensity of the third peak is 1, wherein the relative spectral intensity at the peak of the first peak is 0.79, the relative spectral intensity at the peak of the second peak is 0.85, the half-width of the first peak is 21nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 41nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 624nm;

alternatively, the second peak spectral intensity is 1, wherein the relative spectral intensity at the peak of the first peak is 0.987, the spectral intensity at the peak of the third peak is 0.996, the half-width of the first peak is 20nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 36nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 623nm;

or the third peak spectral intensity is 1, wherein the relative spectral intensity at the peak of the first peak is 0.75, the spectral intensity at the peak of the second peak is 0.90, the half-width of the first peak is 21nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 38nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 624nm;

or the second peak spectral intensity is 1, wherein the relative spectral intensity at the peak of the first peak is 0.83, the spectral intensity at the peak of the third peak is 0.97, the half-peak width of the first peak is 20nm, and the peak wavelength is 444nm; the half-peak width of the second peak is 34nm, the peak wavelength is 497nm, the half-peak width of the third peak is 21nm, and the peak wavelength is 623nm.

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