CN116221639A - Light source and lamp - Google Patents

Abstract

The invention provides a light source and a lamp, wherein the light source comprises a first light-emitting part and a second light-emitting part, the spectrum of the first light-emitting part at least comprises a spectrum of 380 nm-700 nm, the spectrum of the second light-emitting part is a spectrum of 700 nm-785 nm, the light source consists of the first light-emitting part and the second light-emitting part, namely, the light emitted by the light source is the combined light of the light emitted by the first light-emitting part and the light emitted by the second light-emitting part, the spectrum of the light emitted by the light source is a spectrum of 380 nm-785 nm, the supplement of the spectrum of the wave band of at least 700nm-780nm is realized, the problem that the spectrum of the existing light source is low in the wave band of 700nm-780nm is solved, the spectrum of the light source is close to the full spectrum, namely, the spectrum of the light source is close to the spectrum of natural light is effectively improved, and the color rendition of the light source is improved.

Description

Light source and lamp

Technical Field

The invention relates to the technical field of illumination, in particular to a light source and a lamp.

Background

Lighting fixtures are very important in people's life and work, and the spectrum of the light sources comprised by the fixtures is an important factor in determining the light efficiency of the fixtures. In general, the comfort of the eyes is relatively best when people are in natural light. Therefore, the spectrum of the light source in the wavelength range of 380-780 nm is closer to that of natural light, the spectrum of the light source is more complete, the irritation of the lamp to eyes of people is lower, people feel more comfortable in the use process, and a good eyesight protection effect can be achieved.

At present, a common Light source in the lamp is an LED (Light-Emitting Diode Light) Light source, the LED Light source has the characteristics of low cost and low energy consumption, the energy consumption of the LED Light source is only one tenth of that of an incandescent lamp, and the LED Light source is one fourth of that of an energy-saving lamp, so that the LED Light source is widely applied to life and working scenes. In a common LED lamp, the light spectrum of the light can be close to the natural light spectrum within the wave band of 380 nm-700 nm.

However, the light intensity of the light source in the wave band of 700nm-780nm is weak, so that the spectrum of the light source is low and weak in the wave band of 700nm-780nm, and the light efficiency of the lamp is affected.

Disclosure of Invention

The invention provides a light source and a lamp, which are used for solving the problems that in the existing lamp, the light intensity of the light source is weak in the wave band of 700-780 nm, so that the light source spectrum is low and weak in the wave band of 700-780 nm, and the light efficiency of the lamp is affected.

A first aspect of the present application provides a light source comprising a first light emitting member and a second light emitting member;

the spectrum of the first light-emitting part at least comprises a spectrum of 380 nm-700 nm, and the spectrum of the second light-emitting part is a spectrum of 700 nm-785 nm.

The light source consists of a first light-emitting part and a second light-emitting part, namely, the light emitted by the light source is the combined light of the light emitted by the first light-emitting part and the light emitted by the second light-emitting part, the spectrum of the first light-emitting part is the spectrum of 380 nm-700 nm wave band, the spectrum of the second light-emitting part is the spectrum of 700 nm-785 nm wave band, the spectrum of the light emitted by the light source is the spectrum of 380 nm-785 nm, the supplementation of at least the spectrum of 700nm-780nm wave band is realized, the problem that the spectrum of the existing light source is low and weak in the 700nm-780nm wave band is solved, the spectrum of the light source is close to the full spectrum, namely, the spectrum of the light source is close to the spectrum of natural light, and therefore, the light efficiency of the light source is effectively improved, and the protection effect of the light source on human eyes is improved.

In one possible implementation, the second light emitting element includes a first light emitting element, a second light emitting element, a third light emitting element, and a fourth light emitting element;

the spectrum of the first light-emitting element is a first sectional spectrum, the spectrum of the second light-emitting element is a second sectional spectrum, the spectrum of the third light-emitting element is a third sectional spectrum, and the spectrum of the fourth light-emitting element is a fourth sectional spectrum;

the first sectional spectrum, the second sectional spectrum, the third sectional spectrum and the fourth sectional spectrum are sequentially connected to form a spectrum of 700 nm-785 nm.

In one possible implementation, the first segment spectrum is a spectrum from 700nm to 721 nm;

the second sectional spectrum is a spectrum of 720 nm-741 nm;

the third sectional spectrum is 740 nm-761 nm spectrum;

the fourth segment spectrum is 760 nm-785 nm spectrum.

In one possible implementation, the ratio of the power of the first light emitting element, the power of the second light emitting element, the power of the third light emitting element, and the power of the fourth light emitting element is (1-5): (1-5): (1-5): (1-5).

In one possible implementation, the ratio of the power of the first light emitting element, the power of the second light emitting element, the power of the third light emitting element and the power of the fourth light emitting element is 1:1:1:1.

in one possible implementation, the ratio of the power of the first light emitting element, the power of the second light emitting element, the power of the third light emitting element and the power of the fourth light emitting element is 1:1:2:1.

in one possible implementation, the first, second, third, and fourth light emitting elements are red or infrared beads of a single color;

the red light lamp bead is an LED lamp bead excited by a 700 nm-785 nm wave band chip.

In one possible implementation, the light intensities of the first, second, third, and fourth light emitting elements are all greater than 0.3.

In one possible implementation, the ratio of the power of the first light emitting element to the power of the second light emitting element is (1-20): 1.

a second aspect of the present application provides a lamp, at least including a lamp housing and any one of the above light sources, where the light source is disposed on the lamp housing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a spectrum of sunlight;

FIG. 2 is a spectrum of a light source in a conventional LED lamp;

fig. 3 is a schematic structural diagram of a light source according to an embodiment of the present disclosure;

FIG. 4 is a spectrum of a light source according to an embodiment of the present disclosure;

FIG. 5 is a spectrum of another light source according to an embodiment of the present disclosure;

fig. 6 is a schematic layout diagram of a first light emitting element, a second light emitting element, a third light emitting element, and a fourth light emitting element according to an embodiment of the present application;

fig. 7 is a schematic diagram of another arrangement of a first light emitting element, a second light emitting element, a third light emitting element, and a fourth light emitting element according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a lamp according to an embodiment of the present application.

Reference numerals illustrate:

100-light source;

10-a first light emitting member;

20-a second luminescent member;

21-a first light emitting element;

22-a second light emitting element;

23-a third light emitting element;

24-fourth light emitting elements;

200-lamp;

210-lamp housing.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Fig. 1 is a spectrum of sunlight, and fig. 2 is a spectrum of a light source in a conventional LED lamp.

With the continuous development and progress of lamps, lamps are not used for illumination any more, and people begin to pay more attention to the influence of illumination lamps on eyes. Because the human eyes are adapted to natural light environment in the long-term evolution process, the human eyes are less stimulated in the natural light environment, the comfort of the eyes is better, and the vision is also protected to a certain extent.

Referring to fig. 1, a spectrum of natural light is shown, wherein the abscissa is wavelength, the ordinate is luminous intensity of light, and as can be seen from fig. 1, the spectrum of natural light has a certain intensity in the wavelength range of 380 nm-780nm, and human eyes are most comfortable under the illumination corresponding to the spectrum, and the spectrum is helpful for protecting eyes of people.

As to how a lighting fixture can achieve a natural illumination effect, it is always the direction of research of the lighting fixture, the lighting fixture generally comprises a light source, the light source is used for emitting light, and the spectrum of the light emitted by the light source is one of important factors for determining the light efficiency of the lighting fixture. That is, the spectrum of the light emitted by the light source has response within 380 nm-780nm, the more the spectrum of the light source is close to natural light, the more the spectrum of the light source is full, and the better the light efficiency of the corresponding lamp is. Therefore, when people use the lamp, the stimulus of the lamp to eyes is lower, the comfort of eyes is better, and the vision can be well protected.

At present, the LED light source is widely applied to the lighting lamp due to the characteristics of the bottom cost and the energy consumption, and the spectrum of the light source of the common LED lamp can have better response within the wave band of 380 nm-700 nm and is closer to natural light, as shown in fig. 2. However, the light intensity of the light source in the wave band of 700nm-780nm is relatively weak, and the luminous intensity of the light is less than 0.1, so that the spectrum of the light source is low and weak in the wave band of 700nm-780nm, and the light efficiency of the lamp is seriously affected.

Based on the problems, the light source can supplement the spectrum of the 700-780 nm wave band, so that the spectrum of light emitted by the light source is 380-785 nm, and the spectrum of the light source is close to the spectrum of natural light, and the light efficiency of the lamp is effectively improved.

Fig. 3 is a schematic structural diagram of a light source according to an embodiment of the present application.

The embodiment of the application provides a light source 100, where the light source 100 may be an LED light source, and the light source 100 may be used in various lighting devices, for example, an indoor lamp, an outdoor lamp, a car lamp, a desk lamp, a flashlight, or the like.

Referring to fig. 3, the light source 100 includes a first light emitting element 10 and a second light emitting element 20, wherein the spectrum of the first light emitting element 10 is at least 380nm to 700nm, that is, the light emitted by the first light emitting element 10 has a better intensity (at least greater than 0.2) between 380nm and 700 nm. Specifically, for example, the first light emitting element may be an existing LED lamp, that is, the spectrum of the first light emitting element may have a better response in the 380 nm-700 nm band, and a weaker spectral response in the 700nm-780nm band. Alternatively, the first light-emitting element may have a spectral response in the wavelength band of 380nm to 700nm, and no spectral response in other wavelength bands.

Wherein the spectrum of the second light emitting element 20 is 700 nm-785 nm, that is, the light emitted by the second light emitting element 20 has better intensity (at least greater than 0.2) between 700nm and 785 nm.

The light source 100 is composed of the first light emitting element 10 and the second light emitting element 20, that is, the light emitted by the light source 100 is the combined light of the light emitted by the first light emitting element 10 and the light emitted by the second light emitting element 20, the spectrum of the first light emitting element 10 is the spectrum of the 380 nm-700 nm wave band, the spectrum of the second light emitting element 20 is the spectrum of the 700 nm-785 nm wave band, the spectrum of the light emitted by the light source 100 is the spectrum of the 380 nm-785 nm wave band, the supplement of the spectrum of the 700nm-780nm wave band is realized, the problem of low weakness of the existing light source in the 700nm-780nm wave band spectrum is solved, the spectrum of the light source 100 is close to the full spectrum, that is, the spectrum of the light source 100 is close to the spectrum of natural light, thereby effectively improving the light efficiency of the light source 100, improving the color rendition of the light source 100 and improving the protection effect of the light source 100 on human eyes.

The first light emitting element 10 may be a light source made of a specific chip excited fluorescent powder, or the first light emitting element 10 may be another light source capable of emitting light having a spectrum of at least 380nm to 700 nm.

For example, the first light emitting member 10 may be a light source made by exciting a mixed phosphor by a violet chip, and specifically, the mixed phosphor may include a blue phosphor, a green phosphor, and a red phosphor, which may be mixed in a certain ratio, and may emit blue light, green light, and red light, respectively, under the irradiation of violet light emitted from the violet chip. The spectrum of the mixed light of the blue light, the green light, the red light and the purple light emitted by the purple light chip can be at least 380 nm-700 nm.

The first light emitting element 10 may be a light emitting component formed by a single light emitting element, or the first light emitting element 10 may be a light emitting component formed by a combination of two or more light emitting elements, and in this embodiment of the present application, the specific composition of the first light emitting element 10 is not limited, and the spectrum of the first light emitting element 10 may be at least 380nm to 700 nm.

In this embodiment, the second light emitting element 20 may also be a light source made of a specific chip excited fluorescent powder, and capable of emitting light with a spectrum of 380nm to 700 nm.

As one possible implementation, the second light emitting element 20 may be a light source made by exciting a red fluorescent powder by a blue light chip, where the red fluorescent powder may emit red light under excitation of blue light, and a spectrum of mixed light formed by the red light and the blue light emitted by the blue light chip may be a spectrum in a wavelength band of 700nm to 785 nm.

Specifically, with continued reference to fig. 3, the second light-emitting member 20 is composed of four light-emitting elements. The four light emitting elements are, for example, a first light emitting element 21, a second light emitting element 22, a third light emitting element 23, and a fourth light emitting element 24, respectively.

The spectrum of the first light emitting element 21 is a first segment spectrum, the spectrum of the second light emitting element 22 is a second segment spectrum, the spectrum of the third light emitting element 23 is a third segment spectrum, and the spectrum of the fourth light emitting element 24 is a fourth segment spectrum.

The first sectional spectrum, the second sectional spectrum, the third sectional spectrum and the fourth sectional spectrum are sequentially connected to form a spectrum of 700 nm-785 nm. That is, four kinds of light emitting elements are used, and the spectra of the four kinds of light emitting elements can correspond to four parts in the 700nm to 785nm wavelength band, and after the four kinds of light emitting elements are combined, the second light emitting element 20 can emit the spectra in the 700nm to 785nm wavelength band. For example, it is possible to divide 700nm to 785nm into four bands joined together, and then make the spectra of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 correspond to the four bands. In other words, the four light emitting elements are respectively and correspondingly supplemented in a segmented manner, so that the 700 nm-785 nm wave band is finally supplemented, the implementation is easier, and the design difficulty and cost of the second light emitting element 20 are reduced, so that the implementation difficulty and cost of the whole light source 100 are reduced.

Wherein the first segment spectrum, the second segment spectrum, the third segment spectrum, and the fourth segment spectrum may be relatively uniform four-segment spectrums, for example, the first segment spectrum may be a spectrum of 700nm to 721nm, the second segment spectrum may be a spectrum of 720nm to 741nm, the third segment spectrum may be a spectrum of 740nm to 761nm, and the fourth segment spectrum may be a spectrum of 760nm to 785 nm.

The first light-emitting element 21, the second light-emitting element 22, the third light-emitting element 23 and the fourth light-emitting element 24 form the second light-emitting element 20, four light-emitting elements uniformly supplement four parts of 700 nm-785 nm, one or more light-emitting elements can be reduced or avoided from being required to supplement a spectrum with a longer wave band, the complexity and the cost of the light-emitting elements are increased, the complexity of each light-emitting element is reduced, and the design difficulty and the manufacturing cost of the second light-emitting element 20 are reduced.

Wherein the first light emitting element 21, the second light emitting element 22, the third light emitting element 23 and the fourth light emitting element 24 may be single-color red light beads.

Specifically, for example, the first light emitting element 21 may be a single-color red light bulb having a spectrum of 700nm to 721nm, the second light emitting element 22 may be a single-color red light bulb having a spectrum of 720nm to 741nm, the third light emitting element 23 may be a single-color red light bulb having a spectrum of 740nm to 761nm, and the fourth light emitting element 24 may be a single-color red light bulb having a spectrum of 760nm to 785 nm. Therefore, the spectrum in the wave band of 700 nm-785 nm can be effectively supplemented by the monochromatic red light beads in four different wave bands.

The single-color red light bead can be an LED bead excited by a 700 nm-785 nm wave band chip, specifically, for example, an LED bead excited by a blue chip, and the cost of the LED bead excited by the blue chip is lower, so that the cost for realizing 700 nm-785 nm wave band spectrum supplement can be further reduced, and the cost of the light source 100 is reduced.

In the embodiment of the present application, the ratio of the power of the first light emitting element 10 to the power of the second light emitting element 20 may be in the range of (1 to 20): 1, so that the spectrum of the first light emitting element 10 and the spectrum of the second light emitting element 20 have better connectivity, so that the spectrum of the whole light source 100 is more uniform, that is, the spectrum of the whole light source 100 has better continuity, the whole light efficiency of the light source 100 can be further improved, and the comfort of the light source 100 to human eyes is improved.

In the embodiment of the present application, the ratio of the power of the first light emitting element 21, the power of the second light emitting element 22, the power of the third light emitting element 23, and the power of the fourth light emitting element 24 may be (1 to 5): (1-5): (1-5): (1-5), the spectral supplement to the 700nm-780nm band can be better realized by the power ratio of the first light-emitting element 21, the second light-emitting element 22, the third light-emitting element 23 and the fourth light-emitting element 24 in the ratio range, so that the spectral continuity of the light source 100 in the band is better, and the light efficiency of the light source 100 is further improved.

Fig. 4 is a spectrum diagram of a light source according to an embodiment of the present application.

In one possible implementation, the ratio of the power of the first light emitting element 21, the power of the second light emitting element 22, the power of the third light emitting element 23, and the power of the fourth light emitting element 24 may be 1:1:2:1. referring to fig. 4, the power ratio of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23 and the fourth light emitting element 24 in this ratio can realize relatively better complementary effect to the spectrum in the wavelength range of 700nm to 780nm, so that the spectrum intensity in the wavelength range is higher, and the spectrum in the wavelength range has relatively better continuity and uniformity, thereby enabling the spectrum of the whole light source 100 to be more uniform and continuous and further improving the light efficiency of the light source 100.

The number of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 included in the second light emitting element 20 may be one, or the number of one or more light emitting elements may be two or more.

Specifically, the number of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 included in the second light emitting element 20 may be determined by the power of the light emitting elements themselves.

For example, when the power of the first light emitting element 21, the power of the second light emitting element 22, the power of the third light emitting element 23, and the power of the fourth light emitting element 24 are all 1w, the ratio of the numbers of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may be made 1 so that the ratio of the powers of the four is the above ratio: 1:2:1.

alternatively, for example, when the power of the first light emitting element 21, the power of the second light emitting element 22, and the power of the fourth light emitting element 24 are all 1w, and the power of the third light emitting element 23 is 2w, the ratio of the numbers of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may be 1:1:1:1.

FIG. 5 is a spectrum of another light source according to an embodiment of the present application.

In another possible implementation, the ratio of the power of the first light emitting element 21, the power of the second light emitting element 22, the power of the third light emitting element 23, and the power of the fourth light emitting element 24 may be 1:1:1:1. referring to fig. 5, the first light emitting element 21, the second light emitting element 22, the third light emitting element 23 and the fourth light emitting element 24 with the power ratio can achieve a better complementary effect on the spectrum in the wavelength range of 700nm to 780nm, so that the intensity of the spectrum in the wavelength range is higher, thereby the spectrum of the light source 100 has better continuity and uniformity, and the light efficiency of the light source 100 is further improved.

In the embodiment of the present application, the light intensities of the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may all be greater than 0.3. The first light-emitting element 21, the second light-emitting element 22, the third light-emitting element 23 and the fourth light-emitting element 24 are ensured to have higher spectral intensities, so that the spectral intensity of the light source in the wave band of 700nm-780nm is effectively improved. The complementary effects of the first light-emitting element 21, the second light-emitting element 22, the third light-emitting element 23 and the fourth light-emitting element 24 in each segment spectrum are ensured, the spectrum uniformity and the continuity of the whole light source 100 are further improved, and the light efficiency of the light source 100 is improved.

Fig. 6 is a schematic layout diagram of a first light emitting device, a first light emitting element, a second light emitting element, a third light emitting element, and a fourth light emitting element according to an embodiment of the present application, and fig. 7 is another schematic layout diagram of the first light emitting device, the first light emitting element, the second light emitting element, the third light emitting element, and the fourth light emitting element according to an embodiment of the present application.

The first light emitting element 10, the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may be arranged in various ways. For example, the first light emitting element 10 and the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may be sequentially arranged in rows or columns.

Alternatively, as shown in fig. 6, the first light emitting element 10, the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may be uniformly distributed to form a row, so that the light source 100 has a long-stripe structure.

Alternatively, as shown in fig. 7, the first light emitting element 10, the first light emitting element 21, the second light emitting element 22, the third light emitting element 23, and the fourth light emitting element 24 may further use one or several of them as a center, and the rest of them are uniformly distributed around the center to form a ring shape.

Alternatively, the first light emitting element 10, the first light emitting element 21, the second light emitting element 22, the third light emitting element 23 and the fourth light emitting element 24 may be arranged in other regular or irregular arrangements, and the arrangement of the first light emitting element 10 and the first light emitting element 21, the second light emitting element 22, the third light emitting element 23 and the fourth light emitting element 24 may be selectively set according to specific scene requirements.

Figure 8 is a schematic structural diagram of a lamp according to an embodiment of the present application,

the embodiment of the present application further provides a lamp 200, where the lamp 200 may be an indoor lamp, an outdoor lamp 2, a car lamp, a desk lamp, and the like, as shown in fig. 8, the lamp 200 at least includes a lamp housing 210 and the light source 100 described above, where the light source 100 may be disposed on the lamp housing 210.

It should be understood that the lamp 200 may also include other structural components, such as electrical connections, circuit boards, controllers, etc., that perform the functions of the lamp 200.

The shape of the lamp housing 210 may be a circle, a rectangle, or other regular or irregular shapes, and specifically, the shape, the size, etc. of the lamp housing 210 and the lamp 200 may be selected and set according to practical needs, which is not limited in this application.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can lead the connection between the two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (10)

1. A light source, comprising: a first light emitting member and a second light emitting member;

the spectrum of the first light-emitting part at least comprises a spectrum of 380 nm-700 nm, and the spectrum of the second light-emitting part is a spectrum of 700 nm-785 nm.

2. The light source of claim 1, wherein the second light-emitting member comprises a first light-emitting element, a second light-emitting element, a third light-emitting element, and a fourth light-emitting element;

the spectrum of the first light-emitting element is a first sectional spectrum, the spectrum of the second light-emitting element is a second sectional spectrum, the spectrum of the third light-emitting element is a third sectional spectrum, and the spectrum of the fourth light-emitting element is a fourth sectional spectrum;

the first sectional spectrum, the second sectional spectrum, the third sectional spectrum and the fourth sectional spectrum are sequentially connected to form a spectrum of 700 nm-785 nm.

3. The light source of claim 2, wherein the first segmented spectrum is a spectrum of 700nm to 721 nm;

the second sectional spectrum is a spectrum of 720 nm-741 nm;

the third sectional spectrum is 740 nm-761 nm spectrum;

the fourth segment spectrum is 760 nm-785 nm spectrum.

4. A light source as recited in claim 3, wherein the ratio of the power of said first light-emitting element, the power of said second light-emitting element, the power of said third light-emitting element and the power of said fourth light-emitting element is (1 to 5): (1-5): (1-5): (1-5).

5. The light source of claim 4, wherein the ratio of the power of the first light emitting member, the power of the second light emitting member, the power of the third light emitting member, and the power of the fourth light emitting member is 1:1:1:1.

6. the light source of claim 5, wherein the ratio of the power of the first light emitting member, the power of the second light emitting member, the power of the third light emitting member, and the power of the fourth light emitting member is 1:1:2:1.

7. a light source as recited in any one of claims 2-6, wherein said first light-emitting element, said second light-emitting element, said third light-emitting element and said fourth light-emitting element are monochromatic red or infrared beads;

the red light lamp bead is an LED lamp bead excited by a 700 nm-785 nm wave band chip.

8. A light source as recited in any one of claims 2-6, wherein light intensities of each of the first light-emitting element, the second light-emitting element, the third light-emitting element and the fourth light-emitting element is greater than 0.3.

9. A light source according to any one of claims 1-6, wherein the ratio of the power of the first light emitting element to the power of the second light emitting element is (1-20): 1.

10. a luminaire comprising at least a lamp housing and a light source as claimed in any one of the preceding claims 1-9, said light source being arranged on said lamp housing.

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