Lighting device

Abstract

The utility model discloses a lighting device, which comprises a light source assembly, a main light source assembly and an auxiliary light source assembly, and is characterized in that the main light source assembly is used for generating main light; the auxiliary light source assembly is used for generating auxiliary light and comprises a second auxiliary light source assembly, and the auxiliary light emitted by the second auxiliary light source assembly is used for compensating the main light; the light condensing assembly is arranged on an emergent light path of the light source assembly and used for condensing the main light and the auxiliary light to obtain projection light; auxiliary light emitted by the second auxiliary light source assembly at least comprises a first peak wavelength and a second peak wavelength, the first peak wavelength is larger than 580 nm, and the second peak wavelength is smaller than 550 nm; the Duv color deviation of the auxiliary light emitted by the second auxiliary light source assembly on a chromaticity diagram is smaller than or equal to 0.02. In this way, the color cast phenomenon and the color temperature change can be improved, and the color rendering index can be adjusted.

Description

Technical Field

[0001] The present application relates to the field of lighting technology, and in particular to a lighting device. Background Art

[0002] Light-Emitting Diodes (LEDs) are gradually replacing traditional gas discharge bulbs and becoming the main light source for stage lighting applications. The higher the color rendering index of an LED light source, the higher the color reproduction. However, the LED lamps currently used in photography have a green or reddish color of the light emitted by the LED light source and a low color rendering index, which results in color distortion and poor color reproduction of images captured by the camera, which is not conducive to the application of LED light sources. Utility Model Content

[0003] The present application provides a lighting device capable of improving the color cast phenomenon and adjusting the color rendering index.

[0004] To solve the above technical problems, the present application provides a lighting device, which includes a light source assembly, including a main light source assembly and an auxiliary light source assembly, wherein the main light source assembly is used to generate main light; the auxiliary light source assembly is used to generate auxiliary light, and the auxiliary light source assembly includes a second auxiliary light source assembly, and the auxiliary light emitted by the second auxiliary light source assembly is used to compensate for the main light; a focusing assembly is arranged on the output light path of the light source assembly, and is used to focus the main light and the auxiliary light to obtain projection light; the auxiliary light emitted by the second auxiliary light source assembly at least includes a first peak wavelength and a second peak wavelength, wherein the first peak wavelength is greater than 580nm and the second peak wavelength is less than 550nm; the auxiliary light emitted by the second auxiliary light source assembly has a Duv color deviation on a chromaticity diagram of less than or equal to 0.02.

[0005] The present application also provides an illumination device, which includes a light source assembly, including a main light source assembly and an auxiliary light source assembly, wherein the main light source assembly is used to generate main light; the auxiliary light source assembly is used to generate auxiliary light, and the auxiliary light source assembly includes a second auxiliary light source assembly and a third auxiliary light source assembly, and the auxiliary light emitted by the second auxiliary light source assembly and the third auxiliary light source assembly is used to compensate for the main light; a focusing assembly is arranged on the light path of the light source assembly, and is used to focus the main light and the auxiliary light to obtain projection light; wherein the auxiliary light emitted by the second auxiliary light source assembly The peak wavelength of the auxiliary light is greater than 580nm, and the Duv color deviation of the auxiliary light emitted by the second auxiliary light source assembly on the chromaticity diagram is less than or equal to 0.02; the peak wavelength of the auxiliary light emitted by the third auxiliary light source assembly is less than 550nm, and the color coordinates of the auxiliary light emitted by the third auxiliary light source assembly are on the left of the color temperature isotherm of the main light; or the peak wavelength of the auxiliary light emitted by the third auxiliary light source assembly is between 420nm-600nm, and the Duv color deviation of the auxiliary light emitted by the third auxiliary light source assembly on the chromaticity diagram is greater than or equal to 0.

[0006] Through the above scheme, the beneficial effect of the present application is: by setting a main light source component and an auxiliary light source component, the main light source component is used to generate main light, and the auxiliary light source component is used to generate auxiliary light, so as to compensate the main light with the auxiliary light, so as to improve the color deviation, color temperature change and color rendering index reduction of the main light, etc., while maintaining the color temperature of the lighting device constant, improving the color rendering index of the lighting device, improving the color reproduction, and thus ensuring the consistency of the light source output. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0008] Figure 1 is an optical schematic diagram of a first embodiment of the lighting device provided in the present application;

[0009] Figure 2 is a structural schematic diagram of a lighting device embodiment 1 provided in the present application;

[0010] Figure 3 is a schematic diagram of an output light spectrum of an embodiment of a second auxiliary light source assembly of the present application;

[0011] Figure 4 is a schematic diagram of an output light spectrum of another embodiment of the second auxiliary light source assembly of the present application;

[0012] Figure 5 is a schematic diagram of an output light spectrum of another embodiment of the second auxiliary light source assembly of the present application;

[0013] Figure 6 is an optical schematic diagram of a second embodiment of the lighting device provided in the present application;

[0014] Figure 7 is a schematic diagram of an output light spectrum of an embodiment of a third auxiliary light source assembly of the present application;

[0015] Figure 8 This is an optical schematic diagram of the third embodiment of the lighting device provided in the present application. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0017] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0018] It should be noted that the terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0019] The present application discloses an illumination device, which comprises a light source assembly, comprising a main light source assembly and an auxiliary light source assembly, wherein the main light source assembly is used to generate main light; the auxiliary light source assembly is used to generate auxiliary light, and the auxiliary light source assembly comprises a second auxiliary light source assembly, wherein the auxiliary light emitted by the second auxiliary light source assembly is used to compensate for the main light; a focusing assembly is arranged on the light emission path of the light source assembly, and is used to focus the main light and the auxiliary light to obtain projection light; the auxiliary light emitted by the second auxiliary light source assembly comprises a first peak wavelength and a second peak wavelength, wherein the first peak wavelength is greater than 580nm, and the second peak wavelength is less than 550nm; and the auxiliary light emitted by the second auxiliary light source assembly has a Duv color deviation on a chromaticity diagram that is less than or equal to 0.002.

[0020] The following is explained in conjunction with specific embodiments:

[0021] Embodiment 1:

[0022] See also Figure 1 and Figure 2 , Figure 1 1 is a schematic diagram of the structure of the lighting device embodiment 1 provided in the present application, and the lighting device 10 includes a light source assembly 11, a focusing assembly 12, a grating 13 and a lens 14. The light source assembly 11 is used to emit illumination light, and the focusing assembly 12 can focus the illumination light emitted by the light source assembly 11 to focus it in a light hole on the grating 13 to form projection light, and the lens 14 projects the projection light emitted by the grating to the outside of the lighting device.

[0023] The light source assembly 11 includes a main light source assembly 111 and an auxiliary light source assembly. The main light source assembly 111 is used to generate main light, and the auxiliary light source assembly is used to generate auxiliary light. In this embodiment, the auxiliary light source assembly includes a second auxiliary light source assembly 112; the focusing assembly 12 is arranged on the outgoing light path of the light source assembly 11, and is used to focus the main light and the auxiliary light to obtain projection light. Specifically, the focusing assembly 12 can be a condenser, and the auxiliary light emitted by the second auxiliary light source assembly at least includes a first peak wavelength and a second peak wavelength, wherein the first peak wavelength is greater than 580nm, and the second peak wavelength is less than 550nm, and the auxiliary light emitted by the second auxiliary light source assembly 112 has a color coordinate Duv color deviation of less than or equal to 0.02 on the chromaticity diagram; Figure 5 As shown, the auxiliary light with double peak wavelengths can not only compensate the color temperature of the main light emitted by the main light source component 111, but also compensate the color rendering index of the main light emitted by the main light source component 111. At this time, the second auxiliary light source 112 can contain some blue light and red light components, such as Figure 5As shown, when the spectrum emitted by the second auxiliary light source 112 is L1, the second auxiliary light source assembly 112 at this time includes a red LED and a blue LED light source, that is, the red light and the blue light in the L1 spectrum are both emitted by the LED, and the first peak wavelength at this time corresponds to the red LED, and the second peak wavelength corresponds to the blue LED. When the spectrum emitted by the second auxiliary light source 112 is L2, the second auxiliary light source assembly 112 at this time is a blue LED that excites a red phosphor, that is, the blue light in the L2 spectrum is emitted by the LED, and the red light is obtained by exciting the red phosphor with the blue light. When the spectrum emitted by the second auxiliary light source 112 is L3, the second auxiliary light source assembly 112 at this time is a blue LED that excites a red phosphor, that is, the blue light in the L3 spectrum is emitted by the LED, and the red light is obtained by exciting the red phosphor with the blue light, but it should be noted that the red phosphor contained in the second auxiliary light source assembly 112 corresponding to the L3 spectrum is different from the red phosphor contained in the second auxiliary light source assembly 112 corresponding to the L2 spectrum. The second auxiliary light source assembly includes part of the blue light and the red light, which can not only realize the correction of the color rendering index of the light emitted by the main light source assembly, but also keep the color temperature basically unchanged. Specifically, in order to ensure that the color temperature of the projected light remains basically unchanged during the process of the auxiliary light compensating the main light, the color coordinates obtained by calculating the second peak wavelength of the auxiliary light emitted by the second auxiliary light source assembly are near the extension line of the color temperature isotherm of the main light; if the color temperature of the projected light is increased during the process of the auxiliary light compensating the main light, the color coordinates obtained by calculating the second peak wavelength of the auxiliary light emitted by the second auxiliary light source assembly are on the left side of the color temperature isotherm of the main light.

[0024] The second auxiliary light source assembly 112 can be controlled separately, and the brightness of the second auxiliary light source assembly can be dynamically adjusted according to the brightness ratio of the main light emitted by the main light source assembly, so as to compensate for the spectrum loss of the main light at different color temperatures and brightnesses, so as to maintain the consistency of the color, color temperature and color rendering index of the light emitted by the lighting device.

[0025] The following is an explanation in conjunction with a specific embodiment: when the main light source assembly 111 is transiently dimmed at 30% of the current, the color temperature CCT of the main light emitted by the main light source assembly 111 is 6113K, the color rendering index corresponding to R9 is 79, and the Duv color deviation is 0.0037. By dynamically increasing the current of the second auxiliary light source assembly 112, the color temperature of the mixed light of the main light and the auxiliary light can be kept basically unchanged (the color temperature changes between plus or minus 50K), but the color rendering index R9 is increased to 95, and the Duv color deviation changes from +0.0037 (greenish) to -0.002 (reddish).

[0026] In one embodiment, the auxiliary light emitted by the second auxiliary light source assembly 112 may include either blue light or red light, wherein when the auxiliary light is red light, the peak wavelength may be greater than 580 nm. Figure 4 As shown, the auxiliary light can be generated by blue light exciting red light phosphor. It is understandable that the auxiliary light can be synthesized by at least one primary color light, such as red LED or red laser, which is not limited here. When the auxiliary light is blue light, blue-cyan light or blue-green-cyan light, the peak wavelength can be less than 550nm. Figure 3 As shown, it can be understood that the auxiliary light can be synthesized by at least one primary color light, such as a blue LED or a blue laser, which is not limited here.

[0027] When the main light source assembly 111 is driven in a cold state, the excitation efficiency of different colors of the main light source assembly 111 is different at this time, the excitation efficiency of green light is high and the excitation efficiency of red light is low. At this time, the white light output by the main light source assembly 111 will be greenish, that is, the color Duv of the white light is greater than 0 at this time. At the same time, due to the increase in the spectral components of green light, the color rendering index of the white light will be reduced. In addition, when the light source assembly needs to emit white light of different brightness, when the current of the main light source assembly 111 is adjusted to reduce the output of white light, the same color deviation problem caused by the difference in excitation efficiency as the cold state driving will also be encountered. As described in Table 1 below, the parameter changes of the light source assembly under different current intensities show that when the current of the light source assembly is adjusted from 100% to 30%, the Duv of the white light output by the light source assembly changes from -0.0027 to 0.0042, that is, the color gradually changes in the direction of being greenish, the color rendering index R9 decreases from 97 to 81, and the color temperature CCT decreases from 6283K to 6066K. These are all determined by the characteristics of the light source assembly.

[0028] Embodiment 1 of the present application solves the problem of color temperature and color rendering index consistency of the main light source assembly 111 during cold driving or dimming.

[0029] The main light source assembly 111 and the second auxiliary light source assembly 112 can be arranged on the same heat dissipation substrate or on different heat dissipation substrates. The light emitted by the main light source assembly 111 and the second auxiliary light source assembly 112 is collected by the same focusing assembly 12. It can be understood that the light emitted by the main light source assembly 111 and the second auxiliary light source assembly 112 can also be collected by two different focusing assemblies 12.

[0030] Embodiment 2:

[0031] See also Figure 6 , Figure 61 is a schematic diagram of the structure of the second embodiment of the lighting device provided by the present application. Different from the first embodiment, the auxiliary light source assembly of the second embodiment also includes a third auxiliary light source assembly 113, wherein the main light source assembly 111, the second auxiliary light source assembly 112 and the third auxiliary light source assembly 113 are controlled separately, the luminous flux or luminous area emitted by the main light source assembly 111 is greater than any one of the second auxiliary light source assembly 112 and the third auxiliary light source assembly 113, and the second auxiliary light source assembly 112 and the third auxiliary light source assembly 113 are respectively two lights of different wavelength ranges, different colors, different color temperatures or different color rendering indexes. The main light source assembly 111, the second auxiliary light source assembly 112 and the third auxiliary light source assembly 113 can be arranged on the same heat dissipation substrate or on different heat dissipation substrates. The light emitted by the main light source assembly 111, the second auxiliary light source assembly 112 and the third auxiliary light source assembly 113 is collected by the same focusing assembly 12. It can be understood that the light emitted by the main light source assembly 111, the second auxiliary light source assembly 112 and the third auxiliary light source assembly 113 can also be collected by multiple different focusing assemblies 12.

[0032] In one embodiment, the peak wavelength of the spectrum of the light emitted by the second auxiliary light source assembly 112 is above 580nm, and the color deviation of the color coordinate Duv of the auxiliary light emitted by the second auxiliary light source assembly on the chromaticity diagram is less than or equal to 0.02, the peak wavelength of the spectrum of the light emitted by the third auxiliary light source assembly 113 is within 550nm, and the color coordinate CIE1931 (x, y) of the auxiliary light emitted by the third auxiliary light source assembly 113 is to the left of the color temperature isotherm of the main light, such as Figure 7 As shown, the light emitted by the third auxiliary light source assembly 113 may be blue light, or may be a combination of blue light and cyan light, or blue light and cyan-green light. That is, the light emitted by the third auxiliary light source is also mixed with a small amount of cyan light or green light.

[0033] By adding a third auxiliary light source assembly 113, compared with the first embodiment, the second embodiment can adjust the Duv color deviation of the white light emitted by the main light source assembly 111, improve the color rendering index and maintain a small color temperature change, and can also compensate for the change of color temperature. As described in the following table, the color temperature of the second embodiment increases from 6113K to 6843K during the light compensation process.

[0034]

[0035] It can be seen from the above table that with the increase of the luminous flux of the auxiliary light emitted by the second auxiliary light source assembly, the color deviation of the mixed light emitted by the main light and the auxiliary light, that is, the projection light of the lighting device, is reduced from 0.0037 to -0.0021, the color rendering index Ra can be increased from 92 to a maximum of 97, the color rendering index R9 can be increased from 79 to a maximum of 99, and the color rendering index R15 can be increased from 93 to a maximum of 99. Therefore, the use of auxiliary light can significantly solve the color difference and color temperature problems produced by the lighting device 10, compensate for the color temperature of the lighting device 10, and greatly improve the color rendering index.

[0036] In one embodiment, the peak wavelength of the auxiliary light emitted by the third auxiliary light source assembly is between 420nm and 600nm. At this time, the Duv color deviation of the auxiliary light emitted by the third light source assembly on the chromaticity diagram is greater than 0, which is used to correct the excessive Duv color deviation of the main light.

[0037] Embodiment three:

[0038] See also Figure 8 , Figure 8 It is a structural schematic diagram of embodiment 3 of the lighting device provided in the present application. Different from embodiment 2, the auxiliary light source assembly of embodiment 3 also includes a fourth auxiliary light source assembly 114, wherein the main light source assembly 111, the second auxiliary light source assembly 112, the third auxiliary light source assembly 113 and the fourth auxiliary light source assembly 114 are respectively controlled separately, and the luminous flux or luminous area emitted by the main light source assembly 111 is greater than any one of the second auxiliary light source assembly 112, the third auxiliary light source assembly 113 and the fourth auxiliary light source assembly 114, and the second auxiliary light source assembly 112, the third auxiliary light source assembly 113 and the fourth auxiliary light source assembly 114 are lights of three different wavelength ranges, different colors, different color temperatures or different color rendering indexes respectively. The main light source assembly 111, the second auxiliary light source assembly 112, the third auxiliary light source assembly 113 and the fourth auxiliary light source assembly 114 can be arranged on the same heat dissipation substrate, and can also be arranged on different heat dissipation substrates. The light emitted by the main light source assembly 111, the second auxiliary light source assembly 112, the third auxiliary light source assembly 113 and the fourth auxiliary light source assembly 114 is collected by the same focusing assembly 12. It can be understood that the light emitted by the main light source assembly 111, the second auxiliary light source assembly 112, the third auxiliary light source assembly 113 and the fourth auxiliary light source assembly 114 can also be collected by multiple different focusing assemblies 12.

[0039] In one embodiment, the spectral peak wavelength of the light emitted by the second auxiliary light source assembly 112 is above 580nm, and the color deviation of the color coordinate Duv of the auxiliary light emitted by the second auxiliary light source assembly on the chromaticity diagram is less than or equal to 0.02, the spectral peak wavelength of the light emitted by the third auxiliary light source assembly 113 is within 550nm, and the color coordinate CIE1931 (x, y) of the auxiliary light emitted by the third auxiliary light source assembly 113 is to the left of the color temperature isotherm of the main light, the spectral peak wavelength of the light emitted by the fourth auxiliary light source assembly 114 is between 420nm-600nm, and the color deviation of the color coordinate Duv of the auxiliary light emitted by the fourth auxiliary light source assembly on the chromaticity diagram is greater than or equal to 0.

[0040] In summary, the main light source assembly 111 is prone to the above-mentioned color difference problem when it is in a cold driving state; specifically, in the cold driving state, the efficiency of blue light in the main light source assembly 111 to excite green light is high, and the efficiency of exciting red light is low, which leads to a large proportion of green light in the main emitted light; it should be noted that when the main light source assembly 111 is in a dimming state, as the brightness of blue light decreases, the efficiency of exciting green light is high, and the efficiency of exciting red light is low, which also produces the same color difference problem as in the cold driving state. It can be understood that in other embodiments, such as a failure of the red light LED, the failure of the red light LED leads to a low luminous flux, which can also cause color difference problems.

[0041] Furthermore, auxiliary light can be used to compensate for the main light so that the proportion of different colors of light in the output light of the light source component is adjusted to a normal color rendering range, thereby improving the color rendering index of the output light. The normal color rendering range can be set according to actual conditions or experience and is not limited here.

[0042] In one embodiment, the lighting device 10 also includes a light control system, which is connected to the main light source assembly 111 and the auxiliary light source assembly, and is used to increase the brightness of the auxiliary light to a preset brightness value based on the brightness of the main light and a preset dimming ratio; it can be understood that the auxiliary light control device can independently control the brightness of the auxiliary light according to the brightness of the main light and the preset dimming ratio, thereby dynamically compensating for insufficient light quality parameters of the light source assembly 11 at different brightnesses or preset dimming ratios.

[0043] In another specific embodiment, the lighting device 10 may further include a heat dissipation substrate (not shown in the figure), which is arranged on the side of the light source assembly 11 away from the focusing assembly 12, and is used to support the light source assembly 11 and dissipate heat for the light source assembly 11; it can be understood that the main light source assembly 111 and the auxiliary light source assembly can be arranged on the same heat dissipation substrate or on different heat dissipation substrates, which is not limited here.

[0044] In this embodiment, a main light source assembly and an auxiliary light source assembly are arranged, and the main light source assembly is used to generate main light, and the auxiliary light source assembly is used to generate auxiliary light, so as to compensate the main light with the auxiliary light, so as to improve the color deviation, color temperature change and color rendering index reduction of the main light, and thus ensure the consistency of the output light of the light source assembly.

[0045] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A lighting device, characterized in that: include: A light source assembly, comprising a main light source assembly and an auxiliary light source assembly, wherein the main light source assembly is used to generate main light; the auxiliary light source assembly is used to generate auxiliary light, and the auxiliary light source assembly comprises a second auxiliary light source assembly, and the auxiliary light emitted by the second auxiliary light source assembly is used to compensate for the main light; A focusing assembly, arranged on the outgoing light path of the light source assembly, for focusing the main light and the auxiliary light to obtain projection light; The auxiliary light emitted by the second auxiliary light source assembly at least includes a first peak wavelength and a second peak wavelength, wherein the first peak wavelength is greater than 580 nm and the second peak wavelength is less than 550 nm; The auxiliary light emitted by the second auxiliary light source assembly has a Duv color deviation on a chromaticity diagram that is less than or equal to 0.

02.

2. The lighting device according to claim 1, characterized in that: The color coordinates calculated from the second peak wavelength of the auxiliary light emitted by the second auxiliary light source assembly are near the extension line of the color temperature isotherm of the main light, so that the color temperature of the projection light remains substantially unchanged during the light compensation process.

3. The lighting device according to claim 1, characterized in that: The color coordinates calculated from the second peak wavelength of the auxiliary light emitted by the second auxiliary light source assembly are on the left side of the color temperature isotherm of the main light.

4. The lighting device according to claim 1, characterized in that: The main light source assembly and the second auxiliary light source assembly are arranged on the same heat dissipation substrate; or The main light source assembly and the second auxiliary light source assembly are arranged on two different heat dissipation substrates.

5. A lighting device, characterized in that: include: A light source assembly, comprising a main light source assembly and an auxiliary light source assembly, wherein the main light source assembly is used to generate main light; the auxiliary light source assembly is used to generate auxiliary light, wherein the auxiliary light source assembly comprises a second auxiliary light source assembly and a third auxiliary light source assembly, and the auxiliary light emitted by the second auxiliary light source assembly and the third auxiliary light source assembly is used to compensate for the main light; A focusing assembly, arranged on the outgoing light path of the light source assembly, for focusing the main light and the auxiliary light to obtain projection light; Wherein, the peak wavelength of the auxiliary light emitted by the second auxiliary light source assembly is greater than 580nm, and the Duv color deviation of the auxiliary light emitted by the second auxiliary light source assembly on the chromaticity diagram is less than or equal to 0.02; The peak wavelength of the auxiliary light emitted by the third auxiliary light source assembly is less than 550 nm, and the color coordinates of the auxiliary light emitted by the third auxiliary light source assembly are on the left side of the color temperature isotherm of the main light; or The peak wavelength of the auxiliary light emitted by the third auxiliary light source assembly is between 420nm and 600nm, and the Duv color deviation of the auxiliary light emitted by the third auxiliary light source assembly on the chromaticity diagram is greater than or equal to 0.

6. The lighting device according to claim 5, characterized in that: The auxiliary light emitted by the third auxiliary light source assembly is any one of blue light, blue light and cyan light, and blue light and cyan light.

7. The lighting device according to claim 6, characterized in that: The auxiliary light source assembly further includes a fourth auxiliary light source assembly, the peak wavelength of the auxiliary light emitted by the fourth auxiliary light source assembly is between 420nm and 600nm, and the Duv color deviation of the auxiliary light emitted by the fourth auxiliary light source assembly on the chromaticity diagram is greater than or equal to 0.

8. The lighting device according to any one of claims 1 to 7, characterized in that: The luminous flux of the main light emitted by the main light source assembly is greater than the luminous flux of the auxiliary light emitted by the auxiliary light source assembly; or The light emitting area of ​​the main light source assembly is larger than the light emitting area of ​​the auxiliary light source assembly.

9. The lighting device according to any one of claims 1 to 7, characterized in that: The lighting device also includes a light control system, which is connected to the main light source assembly and the auxiliary light source assembly and is used to increase the brightness of the auxiliary light to a preset brightness value based on the brightness of the main light and a preset dimming ratio.

10. The lighting device according to any one of claims 1 to 7, characterized in that: The lighting device further comprises a heat dissipation substrate, which is arranged on a side of the light source assembly away from the light focusing assembly and is used to support the light source assembly and dissipate heat for the light source assembly.

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