Color observation device

Abstract

A color observation device, the device comprises: a light source module, the light source module comprises one or more light-emitting units, the light-emitting units comprise at least four different individually controllable LED light sources according to light-emitting channels, the different LED light sources have different spectral peak wavelengths and are used to emit light of different colors, the light-emitting units are used to emit mixed light according to different mixed light ratios; an observation module, the observation module is arranged on the optical path of the light source module, the observation module is used to place an object to be observed; and a control module, the control module is used to control the light-emitting units to emit the mixed light. The performance diversity of the color observation device is improved, and the user experience can be improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of optical lighting technology, and in particular to a color observation device. Background Art

[0002] The standard light source colorimetric light box can simulate the lighting of various lighting environments and is often used in color management and color deviation comparison of traditional dyeing and printing industries. When light from light sources with different spectra shines on the same object, different light colors will appear, thus affecting the color rendering effect of the object.

[0003] At present, as people's demand for color observation continues to increase, higher requirements are also placed on the color rendering effect of color observation devices. Summary of the invention

[0004] The problem solved by the embodiments of the present invention is to provide a color observation device to improve the performance diversity and user experience of the color observation device.

[0005] To solve the above problems, an embodiment of the present invention provides a color observation device, including: a light source module, the light source module includes one or more light-emitting units, according to the light-emitting channels, the light-emitting units include at least four different individually controllable LED light sources, the spectral peak wavelengths of the different LED light sources are different and are used to emit light of different colors, the light-emitting units are used to emit mixed light according to different mixed light ratios; an observation module, the observation module is arranged on the optical path of the light source module, the observation module is used to place an object to be observed; and a control module, the control module is used to control the light-emitting units to emit the mixed light.

[0006] Compared with the prior art, the technical solution of the embodiment of the present invention has the following advantages:

[0007] The embodiment of the present invention provides a color observation device, wherein the light source module in the color observation device includes one or more light-emitting units. According to the light-emitting channels, the light-emitting units include at least four different LED light sources, wherein the spectral peak wavelengths of the different LED light sources are different and are used to emit light of different colors. The light-emitting units are used to emit mixed light according to different light mixing ratios. Compared with the existing color observation device which mainly adopts the CIE standard light source solution, the embodiment of the present invention uses at least four different LED light sources. Since the peak wavelengths of the multiple LED light sources are different and can emit light of different colors, and the LED light source has the characteristic of adjustable luminous intensity, it is possible to obtain the CIE 1931 chromaticity diagram (CIE xy Chromaticity Diagram) of each LED light source in the light-emitting unit through different light mixing ratios. A plurality of mixed lights corresponding to any color coordinate point in the area enclosed by the corresponding color coordinate points on the LED diagram can be used to achieve diversity of spectral schemes (for example, the effect of a CIE standard light source can be obtained, or a scheme of isochromaticity with different spectra can be achieved). Moreover, by utilizing at least four different LED light sources, a larger adjustable color gamut range can be covered by light mixing. For any color coordinate point within the color gamut range, a larger color rendering range can be obtained, that is, different color visual effects can be obtained, so that it is easy to obtain an LED light source mixing scheme that can achieve a better color rendering effect, so as to meet the needs of color rendering preferences in different application scenarios, or to be applied to scenarios with high accuracy and controllability requirements for optical properties such as light source spectrum and color. In summary, the embodiments of the present invention are conducive to improving the performance diversity and user experience of the color observation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a structural schematic diagram corresponding to an embodiment of a color observation device of the present invention;

[0009] Figure 2 is a schematic diagram of the distribution of light-emitting units in an embodiment of the color observation device of the present invention;

[0010] Figure 3 yes Figure 2 A schematic diagram of the distribution of LED light sources in each light-emitting unit;

[0011] Figure 4 It is a schematic diagram of the color coordinate points of the first type light source, the second type light source, the third type light source and the fourth type light source located on the CIE1931 chromaticity diagram in one embodiment of the light source module of the present invention;

[0012] Figure 54 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg after mixing the first monochromatic LED light source, the second monochromatic LED light source, the sixth monochromatic LED light source and the first white light source when the color temperature of 4000K is used as the mixing target in one embodiment of the present invention;

[0013] Figure 6 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg after the first monochromatic LED light source, the second monochromatic LED light source, the fifth monochromatic LED light source and the first white light source are mixed when the color temperature is 4000K as the mixed light target in one embodiment of the present invention;

[0014] Figure 7 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg after the first monochromatic LED light source, the second monochromatic LED light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the first white light source are mixed when the color temperature is 4000K as the mixed light target in one embodiment of the present invention;

[0015] Figure 8 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the second white light source, the fifth monochromatic LED light source, the first white light source and the second monochromatic LED light source are mixed when the color temperature of 3000K is used as the mixed light target in one embodiment of the present invention;

[0016] Fig. 9 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the third white light source, the fifth monochromatic LED light source, the first white light source and the second monochromatic LED light source are mixed when the color temperature of 5000K is used as the light mixing target in one embodiment of the present invention;

[0017] Fig.10 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second white light source and the third white light source are mixed when the color temperature is 4000K as the mixed light target in one embodiment of the present invention;

[0018] Fig.11 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the second white light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0019] Fig.12It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the third white light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0020] Fig.13 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the third monochromatic LED light source and the second white light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0021] Fig.14 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the first composite light LED light source, the second monochromatic LED light source, the third monochromatic LED light source and the second white light source are mixed when the color temperature of 4000K is used as the mixed light target in one embodiment of the present invention;

[0022] Fig.15 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source and the third white light source are mixed when the color temperature of 4000K is used as the mixed light target in one embodiment of the present invention;

[0023] Fig.16 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source and the eighth monochromatic LED light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0024] Fig.17 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source and the eleventh monochromatic LED light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0025] Fig.18 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the first composite light LED light source, the second monochromatic LED light source and the eleventh monochromatic LED light source are mixed when the color temperature of 4000K is used as the mixed light target in one embodiment of the present invention;

[0026] Fig.19 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the first composite light LED light source, the second monochromatic LED light source and the ninth monochromatic LED light source are mixed when the color temperature of 4000K is used as the mixed light target in one embodiment of the present invention;

[0027] Fig. 20 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the third monochromatic LED light source, the second monochromatic LED light source and the ninth monochromatic LED light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0028] Fig.21 It is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the third monochromatic LED light source, the fourth monochromatic LED light source and the tenth monochromatic LED light source are mixed when the color temperature of 4000K is used as the light mixing target in one embodiment of the present invention;

[0029] Fig. 22 This is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source, the third white light source and the eleventh monochromatic LED light source are mixed when the color temperature of 4000K is used as the mixing target in one embodiment of the present invention. DETAILED DESCRIPTION

[0030] As can be seen from the background technology, as people's demand for color observation devices continues to increase, higher requirements are also placed on the color rendering effect of color observation devices.

[0031] Research has found that traditional colorimetric light boxes generally use CIE standard light sources formed by long strip lamps. For example, the light source modules mainly include D65 light sources, CWF light sources, A light sources, F light sources and UV light sources, or other fluorescent light sources (such as TL84 light sources, CWF light sources and UV light sources). Therefore, the types of light sources are limited, and it is difficult to meet the needs of special colorimetric scenes in scientific research and product development.

[0032] Moreover, the light source adopts a long strip lamp tube, and different types of light sources are arranged in an intermittent manner. Therefore, when different light sources are used, there are certain differences in the spatial distribution of light in the light box, and the uniformity is limited. At the same time, the existing light source structure type and arrangement method have low compatibility with the light source type, and it is difficult to expand the light source type in a limited space.

[0033] In order to solve the technical problem, an embodiment of the present invention provides a color observation device, including: a light source module, the light source module includes one or more light-emitting units, according to the light-emitting channel, the light-emitting unit includes at least four different individually controllable LED light sources, the spectral peak wavelengths of different LED light sources are different and are used to emit light of different colors, the light-emitting unit is used to emit mixed light according to different mixed light ratios; an observation module, the observation module is arranged on the optical path of the light source module, the observation module is used to place the object to be observed; the control module, the control module is used to control the light-emitting unit to emit mixed light.

[0034] In the embodiment of the present invention, since the peak wavelengths of the multiple LED light sources are different and they can emit lights of different colors, and the LED light sources have the characteristic of adjustable luminous intensity, it is possible to obtain multiple mixed lights corresponding to any color coordinate point in the area enclosed by the color coordinate points corresponding to the respective LED light sources in the light-emitting unit on the CIE1931 chromaticity diagram through different light mixing ratios, thereby achieving the diversity of spectral schemes (for example, the effect of the CIE standard light source can be obtained, or the same-color different-spectrum scheme can be achieved). Moreover, by using at least four different LED light sources, a larger adjustable color gamut range can be covered by light mixing, and a larger color rendering range can be obtained for any color coordinate point within the color gamut range, that is, different color visual effects can be obtained, thereby easily obtaining an LED light source mixing scheme that can achieve a better color rendering effect, so as to meet the requirements for color rendering preferences in different application scenarios, or be applied to scenarios with high accuracy and controllability requirements for optical properties such as light source spectrum and color. In summary, the embodiments of the present invention are conducive to improving the performance diversity and user experience of color observation devices.

[0035] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0036] refer to Figure 1 , Figure 1 It is a schematic structural diagram of an embodiment of a color observation device of the present invention.

[0037] The color observation device 103 includes: a light source module 108, the light source module 108 includes one or more light-emitting units 102, and the light-emitting unit 102 includes at least four different individually controllable LED light sources 1021 according to the light-emitting channel, and the spectral peak wavelengths of the different LED light sources are different and are used to emit light of different colors, and the light-emitting unit 102 is used to emit mixed light according to different mixed light ratios; an observation module 106, the observation module 106 is arranged on the optical path of the light source module 108, and the observation module 106 is used to place the object to be observed; and a control module 107, the control module 107 is used to control the light-emitting unit 102 to emit mixed light.

[0038] As an example, the color observation device 103 is used for the user to observe the color characteristics of the object to be observed under the preset light color light source emitted by the light emitting unit 102. In other embodiments, the color observation device is used as a colorimetric light box.

[0039] In this embodiment, the color observation device 103 is a colorimetric light box. Specifically, the colorimetric light box can be used to check the color deviation of the object to be observed, and can also be used to detect the presentation effect of the color of the object under different spectra.

[0040] The light source module 108 is used to emit mixed light. Specifically, the light source module 108 includes one or more light emitting units 102, and the light source module 108 emits mixed light through the light emitting units 102. According to actual needs, the number of the light source module 108 can be one or more.

[0041] In this embodiment, the light source module 108 includes a light source box 101, and the light unit 102 is located in the light source box 101. The light unit 102 is located in the light source box 101, which is conducive to protecting the light unit 102 in the light source module, thereby reducing the probability of the light unit 102 being affected by the external environment.

[0042] In this embodiment, the light source module 108 further includes a light homogenizing plate 100 disposed on the light emitting surface of the light source box 101. The light homogenizing plate 100 is used to evenly irradiate the mixed light emitted by the light emitting unit 102 onto the observation module 106, thereby obtaining an output light highly consistent with a preset spectrum, and at the same time placing the object to be observed in the observation module 106 in a uniform light environment.

[0043] The number of the light-emitting units 102 is one or more. Where the number of the light-emitting units 102 is multiple, the arrangement of the multiple light-emitting units 102 includes: matrix arrangement, ring arrangement, regular polygonal arrangement or strip arrangement. Specifically, a suitable arrangement can be selected according to actual needs. For example, factors such as the spatial characteristics of the color observation device, the specific application scenario or the volume.

[0044] refer to Figures 2 to 3 As an example, the arrangement of the plurality of light emitting units 102 is a matrix arrangement. The plurality of light emitting units 102 are arranged in a matrix, which can make the mixed light emitted by the light source module 108 more uniform, thereby improving the uniformity of the color rendering effect within the observation range.

[0045] In this embodiment, according to the light-emitting channel, the light-emitting unit 102 includes at least four different individually controllable LED light sources 1021. It should be noted that the LED light sources 102 in the same light-emitting channel can be controlled simultaneously. It should be noted that the number of LED light sources 1021 corresponding to the same spectral peak wavelength is one or more. Specifically, according to actual needs, when the number of LED light sources corresponding to the same spectral peak wavelength is multiple, the LED light sources 1021 with the same spectral peak wavelength can be located in the same light-emitting channel, or in different light-emitting channels.

[0046] In the case where there are multiple LED light sources 1021 with the same spectral peak wavelength, when the LED light sources 1021 with the same spectral peak wavelength are located in different light-emitting channels, each LED light source 1021 corresponding to the same spectral peak wavelength can be controlled separately, thereby further increasing the color gamut adjustable range and adjustment accuracy of the light source module 108 during light mixing, and further enhancing the functionality of the light source module 108. For example, taking the case where there are two LED light sources 1021 corresponding to the same spectral peak wavelength as an example, by independently controlling the two LED light sources 1021, their luminous intensities can be adjusted separately to obtain different lighting spectrum solutions to meet actual needs (for example, taking the case where there are two LED light sources 1021 with the same spectral peak wavelength as an example, when the luminous intensity of one LED light source 1021 is insufficient, the luminous intensity can be supplemented by adjusting the luminous intensity of another LED light source 1021, thereby achieving the target intensity).

[0047] The LED light source 1021 has the characteristics of energy saving, environmental protection, safety, long life, low power consumption, high efficiency, high brightness, waterproof, and miniature. Moreover, the LED light source 1021 also has the characteristics of free spectral combination and easy adjustment of luminous intensity. By selecting the LED light source 1021, it is easy to select light that can emit suitable light color or peak wavelength, so that the light source module 108 can emit light that meets the color rendering effect requirements.

[0048] In addition, since the peak wavelengths of the multiple LED light sources 1021 are different and they can emit lights of different colors, and the LED light source 1021 has the characteristic of adjustable luminous intensity, by making the light-emitting unit 102 include at least four different LED light sources 1021, it is possible to obtain multiple mixed lights corresponding to any color coordinates in the area enclosed by the color coordinate points corresponding to each LED light source 1021 in the light-emitting unit 102 on the CIE1931 chromaticity diagram through different mixing ratios, thereby achieving diversity of spectral schemes (for example, the effect of the CIE standard light source can be obtained, or the same-color different-spectrum scheme can be achieved). Moreover, by using at least four different LED light sources 1021, a larger adjustable color gamut range can be covered, and a larger color rendering range can be obtained for any color coordinate point within the color gamut range, that is, different color visual effects can be obtained, so that it is easy to obtain a LED light source 1021 mixing scheme that can achieve better color rendering effects, so as to meet the needs of color rendering preferences in different application scenarios, or be applied to scenarios with high accuracy and controllability requirements for optical properties such as light source spectrum and color.

[0049] Accordingly, in this embodiment, in the light emitting unit 102, according to the spectral peak wavelength, the LED light source 1021 includes at least a first type light source, a second type light source, a third type light source and a fourth type light source with different spectral peak wavelengths. Figure 4 , Figure 4 The diagram is a schematic diagram of an embodiment of the color coordinate points of the first light source, the second light source, the third light source and the fourth light source located on the CIE 1931 chromaticity diagram. It should be noted that in 1931, CIE defined a numerical system for color, which allows the calculation of color coordinate points based on the spectrum of color stimulus (i.e., light source or light reflected from a colored surface), called color coordinates. The color coordinates define the color stimulus at Figure 4 The position in the horseshoe diagram, where the x-coordinate and y-coordinate correspond to the values ​​of the abscissa and ordinate in the chromaticity diagram, respectively, and Figure 4 The outer boundary of the horseshoe represents the wavelength and maximum saturation of different spectral colors. Here, the chromaticity diagram is a two-dimensional image coordinate system that uses points at different positions to represent the chromaticity information of various light sources. It was developed by the International Commission on Illumination (CIE) in 1931, so it is also called the CIE1931 chromaticity diagram.

[0050] Taking two LED light sources with adjustable output luminous intensity as an example, on the chromaticity diagram, based on the color coordinates of any two light sources, the positions of the color coordinate points of the two light sources can be determined. After the two light sources are mixed, under the condition that the overall output luminous intensity remains unchanged, by adjusting the proportion of the two in the overall output luminous intensity, that is, the mixing ratio (for example, the ratio of the output luminous intensity), any light color on the line formed by the two color coordinate points can be achieved, that is, the color of the light emitted after mixing can change along the line.

[0051] In this embodiment, taking the position of the color coordinate point of the first type light source on the CIE1931 chromaticity diagram as point A, the position of the color coordinate point of the second type light source on the CIE1931 chromaticity diagram as point B, the position of the color coordinate point of the third type light source on the CIE1931 chromaticity diagram as point C, and the position of the color coordinate point of the fourth type light source on the CIE1931 chromaticity diagram as point D as an example, point A, point B, point C and point D form a closed area. Therefore, by adjusting the mixed light ratio (for example, the ratio of luminous intensity) of the first type light source, the second type light source, the third type light source and the fourth type light source, a plurality of mixed lights corresponding to arbitrary color coordinates in the closed area can be obtained. That is to say, the closed area is the adjustable color gamut range that can be achieved by the first type light source, the second type light source, the third type light source and the fourth type light source.

[0052] It should be noted that in Figure 4 In the figure, point A, point B, point C and point D can be understood as: a schematic diagram in which the first type of light source, the second type of light source, the third type of light source and the fourth type of light source each select a specific type of light source.

[0053] In this embodiment, according to the light emitting channel, the light emitting unit 102 includes at least one monochromatic LED light source, or at least one composite LED light source, or at least one monochromatic LED light source and one composite LED light source. Specifically, the color coordinate point position of the monochromatic LED light source on the CIE1931 chromaticity diagram is closer to the outer boundary of the horseshoe, so that the area of ​​the closed area enclosed by each LED light source 1021 in the light emitting unit 102 in the CIE1931 chromaticity diagram is larger, that is, the light emitting unit 102 can achieve a larger adjustable color gamut range.

[0054] When the composite light LED light source is used in combination with other LED light sources, compared with the monochromatic light LED light source with the same peak wavelength, the composite light LED light source covers a larger spectral range, which is beneficial to improving the color rendering authenticity of the overall mixed light result. At the same time, the composite light LED light source covers a larger spectral range. Compared with the use of monochromatic light LED light source, it is beneficial for the light-emitting unit 102 to use fewer LED light sources 1021, while achieving adjustable color gamut within a certain range, while reducing the number of LED light sources 1021, which is correspondingly more conducive to the control of the light source module 108.

[0055] Correspondingly, when the light emitting unit 102 includes at least one monochromatic LED light source and one composite LED light source, the above two advantages can be combined, which will not be repeated here.

[0056] In this embodiment, the composite light LED light source is a phosphor converted LED (PCLED) light source. The light emitting principle of the phosphor converted LED light source is: light of a first wavelength excites phosphor to emit light of a second wavelength. Compared with using a combination of multiple monochromatic LED light sources to form a corresponding composite light LED light source group, the phosphor converted LED light source only needs to use one monochromatic LED light source, and obtain the composite light LED light source by combining the monochromatic LED light source with phosphor. Therefore, the phosphor converted LED light source has a lower cost and a smaller size, which is conducive to reducing the preparation cost of the light source module and reducing the size of the light source module.

[0057] In this embodiment, in the light emitting unit 102, the LED light source 1021 includes at least a first type of light source, a second type of light source, a third type of light source, and a fourth type of light source, and the area enclosed by the color coordinate points corresponding to the first type of light source, the second type of light source, the third type of light source, and the fourth type of light source on the CIE1931 chromaticity diagram at least covers part of the color coordinate points corresponding to white light. By making the area enclosed by the color coordinate points at least cover part of the color coordinate points corresponding to white light, the light source module is more in line with the color rendering requirements under general lighting, so that the color observation device meets the use requirements of different scenes.

[0058] refer to Figure 4 In a specific embodiment, the area enclosed by the color coordinate points corresponding to the first type of light source, the second type of light source, the third type of light source, and the fourth type of light source on the CIE1931 chromaticity diagram at least covers the color coordinate points corresponding to part of the white light with a preset color temperature, and the preset color temperature is 2500K to 7000K. In other words, the closed area enclosed by points A, B, C, and D covers at least part of the color coordinate points corresponding to the white light with a preset color temperature, and the preset color temperature is 2500K to 7000K. White light in the range of 2500K to 7000K better meets the color rendering requirements under general lighting, so that the color observation device can better meet the requirements of daily lighting conditions.

[0059] In the light emitting unit 102, each LED light source 1021 is used to emit visible light, and the visible light region is divided into three intervals, namely, a first spectral interval, a third spectral interval, and a second spectral interval located between the first spectral interval and the third spectral interval, and the wavelengths of the first spectral interval, the second spectral interval, and the third spectral interval increase in sequence. Among them, the wavelength range of the visible light region of the human eye is 380nm to 780nm.

[0060] In this embodiment, the first type of light source is located in the second spectral interval, the third type of light source is located in the third spectral interval, the fourth type of light source is located in the first spectral interval, and the second type of light source is a white light source. That is to say, the first type of light source, the third type of light source and the fourth type of light source located in different spectral intervals are selected from the entire visible light region, and the first type of light source, the third type of light source and the fourth type of light source are non-white light sources to meet the spectral requirements of short wavelength, medium wavelength and long wavelength respectively, and the second type of light source is selected at the same time to meet the requirements that the area enclosed by the color coordinate points corresponding to the first type of light source, the second type of light source, the third type of light source and the fourth type of light source on the CIE1931 chromaticity diagram at least covers part of the color coordinate points corresponding to the white light (that is, the requirement of obtaining white mixed light). Therefore, by using the above four light sources for mixing light, a larger color gamut adjustable range can be covered when the number of light sources is small, so that the light source module obtains a larger color rendering range, which can basically meet the LED light source mixing solution and meet the requirements of color rendering preferences in different application scenarios.

[0061] Specifically, by selecting the first type of light source, the second type of light source, the third type of light source and the fourth type of light source, each having a certain intensity of spectrum coverage in the visible light range, it is easy to obtain a spectrum with a higher color reproduction ability after mixing the light, thereby achieving a better color reproduction ability for observed objects of different colors. In this embodiment, the indicator of color reproduction ability is the color authenticity index (Rf). In other embodiments, the indicator of color reproduction ability can also be the color rendering index (Ra).

[0062] In this embodiment, the first type of light source is a first monochromatic LED light source, the fourth type of light source includes one or more of a second monochromatic LED light source, a third monochromatic LED light source and a fourth monochromatic LED light source, and the third type of light source includes one or more of a first composite light LED light source, a fifth monochromatic LED light source, a sixth monochromatic LED light source and a seventh monochromatic LED light source.

[0063] Among them, the spectral peak wavelength of the first monochromatic LED light source is in the range of 510nm to 550nm; the spectral peak wavelength of the second monochromatic LED light source is in the range of 460nm to 485nm; the spectral peak wavelength of the third monochromatic LED light source is in the range of 440nm to 460nm; the spectral peak wavelength of the fourth monochromatic LED light source is in the range of 420nm to 440nm; at least one spectral peak wavelength of the first composite light LED light source is in the range of 580nm to 610nm, the spectral peak wavelength of the fifth monochromatic LED light source is in the range of 620nm to 635nm, the spectral peak wavelength of the sixth monochromatic LED light source is in the range of 590nm to 620nm, and the spectral peak wavelength of the seventh monochromatic LED light source is in the range of 635nm to 665nm.

[0064] Specifically, the first monochromatic LED light source is a monochromatic green light source, the second monochromatic LED light source is a monochromatic blue light source, the third monochromatic LED light source is a monochromatic magenta light source, the fourth monochromatic LED light source is a monochromatic purple light source, the fifth monochromatic LED light source is a monochromatic orange-red light source, the sixth monochromatic LED light source is a monochromatic amber light source, the seventh monochromatic LED light source is a monochromatic red light source, and the first composite light LED light source is a composite amber light source.

[0065] It should be noted that by selecting different LED light sources 1021 in the third type of light source, it is possible to obtain lighting effects with different color saturation index (Rg) biases while ensuring a high color reproduction capability, thereby making the observed object have different color presentation effects. Moreover, on the basis of the third type of light source, by selecting different LED light sources 1021 in the fourth type of light source, it is possible to play an auxiliary adjustment effect on the color saturation index while ensuring a high color reproduction capability, thereby making the observed object have different color presentation effects.

[0066] When the first monochromatic LED light source, the second monochromatic LED light source, the sixth monochromatic LED light source and the first white light source are mixed, or when the first monochromatic LED light source, the second monochromatic LED light source, the first composite LED light source and the first white light source are mixed, within a larger color authenticity index (Rf) range, a spectrum solution with a low color saturation index (Rg) can be obtained, thereby meeting the use requirements of low color saturation under specific color reproduction conditions. For example, please refer to Figure 5 , shows a relationship diagram of an embodiment of a color authenticity index and a color saturation index after mixing light using a first monochromatic LED light source, a second monochromatic LED light source, a sixth monochromatic LED light source and a first white light source when a color temperature of 4000K is used as a mixing target.

[0067] When the first monochromatic LED light source, the second monochromatic LED light source, the fifth monochromatic LED light source and the first white light source are mixed, or when the first monochromatic LED light source, the second monochromatic LED light source, the seventh monochromatic LED light source and the first white light source are mixed, within a larger color reproduction capability range, a spectrum solution with a high color saturation index can be obtained, that is, the higher the color rendering index of the mixed light, the lower the saturation. For example, please refer to Figure 6 , shows a relationship diagram between the color authenticity index and the color saturation index after the first monochromatic LED light source, the second monochromatic LED light source, the fifth monochromatic LED light source and the first white light source are mixed. In this embodiment, the target color temperature of the mixed light is 4000K.

[0068] In this embodiment, the second type of light source is a white light source, and in the light emitting unit, according to the spectral peak wavelength, the white light source includes one or more of a first white light source, a second white light source and a third white light source, the color temperature range of the first white light source is 3500K to 5500K, the color temperature of the second white light source is 1800K to 3500K, and the color temperature of the third white light source is 5500K to 7000K. The color temperature range of the first white light source is 3500K to 5500K. After the first white light source in this color temperature range is mixed with other LED light sources, it is beneficial to obtain a mixed light result with a higher color reproduction ability (for example, the color authenticity index Rf can be greater than 80, and can even reach more than 90) when the most commonly used color temperature (3500K to 5500K) in general lighting is used as the mixed light target.

[0069] The color temperature of the second white light source is 1800K to 3500K, which belongs to the low color temperature range and is basically consistent with the color temperature value of natural daylight in the evening or sunrise period, and is usually used for nighttime lighting. When the second white light source is added, for mixed light situations with low color temperature as the target, it is beneficial to obtain a mixed light effect with higher color reproduction ability.

[0070] The color temperature of the third white light source is 5500K to 7000K, which belongs to the high color temperature range and is basically consistent with the color temperature value of natural daylight during the noon period of the day, and can be used for daytime lighting. When the third white light source is added, for the mixed light situation with high color temperature as the target, it is beneficial to obtain a mixed light effect with higher color reproduction ability. Moreover, the color temperature of the third white light source can fill the remaining white light sources of common color temperature outside the first white light source and the second white light source. The mixed light results are more widely distributed within the achievable color reproduction ability and color saturation correlation range, and are suitable for mixed light situations when the target color temperature is high, thereby further expanding the possibility of color rendering effects.

[0071] It should be noted that when the first type of LED light source 1021 is selected, and only one specific LED light source 1021 is selected from the third type of light source, only one specific white light source is selected from the second type of light source, and only one specific LED light source 1021 is selected from the fourth type of light source, the light-emitting unit 102 realizes four-channel lighting, thereby obtaining different four-color mixed light combinations.

[0072] Correspondingly, when any multiple LED light sources 1021 are selected from the third type of light source, and / or when any multiple LED light sources 1021 are selected from the fourth type of light source, the number of channels of the light-emitting unit 102 can be increased, for example, to achieve five channels, six channels or seven channels.

[0073] For example, when two specific LED light sources 1021 are selected from the third type of light source, when one specific LED light source 1021 is selected from the fourth type of light source, and only one specific white light source is selected from the second type of light source, the first type of light source, the second type of light source, the third type of light source, and the fourth type of light source can realize five channels. Alternatively, when one specific LED light source 1021 is selected from the third type of light source, when two specific LED light sources 1021 are selected from the fourth type of light source, and only one specific white light source is selected from the second type of light source, the first type of light source, the second type of light source, the third type of light source, and the fourth type of light source can realize five channels. Specifically, the specific light source type of the third type of light source is set according to actual needs.

[0074] It should also be noted that when the number of channels of the light-emitting unit 102 is further increased, since the light colors of each light-emitting unit are different, it is beneficial to further obtain a spectrum solution with a higher color rendering index.

[0075] For example, combined with reference Figure 7 , Figure 7 4 is a schematic diagram of the relationship between the color reproduction capability (specifically, the color authenticity index Rf) and the color saturation index (Rg) after mixing the first monochromatic LED light source, the second monochromatic LED light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the first white light source when the color temperature is 4000K as the mixed light target in one embodiment of the present invention, wherein Figure 7 It can be seen that by selecting the first monochromatic LED light source, the second monochromatic LED light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the first white light source, different color saturation effects can be obtained while achieving higher color reproduction capabilities.

[0076] In a specific embodiment, the spectral peak wavelength of the first monochromatic LED light source is within the range of 510nm to 550nm; the spectral peak wavelength of the second monochromatic LED light source is within the range of 460nm to 485nm; the spectral peak wavelength of the third monochromatic LED light source is within the range of 440nm to 460nm; the spectral peak wavelength of the fourth monochromatic LED light source is within the range of 420nm to 440nm; at least one spectral peak wavelength of the first composite light LED light source is within the range of 580nm to 610nm, the spectral peak wavelength of the fifth monochromatic LED light source is within the range of 620nm to 635nm, the spectral peak wavelength of the sixth monochromatic LED light source is within the range of 590nm to 620nm, and the spectral peak wavelength of the seventh monochromatic LED light source is within the range of 635nm to 665nm. The LED light sources 1021 within the above wavelength ranges all have a certain intensity of spectral coverage within the visible light range, and after light mixing, it is easy to obtain a spectrum with a higher color reproduction ability, thereby achieving a higher color reproduction ability for objects of different colors.

[0077] Please refer to Figure 8 , Figure 8 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the second white light source, the fifth monochromatic LED light source, the first white light source and the second monochromatic LED light source are mixed in one embodiment of the present invention. Specifically, Figure 8 It can be seen that when the second white light source is selected, multiple spectrum solutions can still be obtained within a larger white light range, and it is beneficial to obtain a mixed light effect with higher color reproduction ability.

[0078] It should be noted that, in this embodiment, the target color temperature of the mixed light is taken as 3000K, and therefore a second white light source with a lower color temperature is used.

[0079] Please refer to Fig. 9 , Fig. 9 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the third white light source, the fifth monochromatic LED light source, the first white light source and the second monochromatic LED light source are mixed in one embodiment of the present invention. Specifically, Fig. 9 It can be seen that when the third white light source is selected, multiple spectrum solutions can still be obtained within a larger white light range, and it is beneficial to obtain a mixed light effect with a higher color reproduction ability.

[0080] It should be noted that, in this embodiment, taking the target color temperature of the mixed light as 5000K as an example, a third white light source with a higher color temperature is adopted.

[0081] Please refer to Fig.10 , Fig.10 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second white light source and the third white light source are mixed in one embodiment of the present invention. Specifically, Fig.10 It can be seen that when the second white light source and the third white light source are selected, multiple spectrum solutions can still be obtained in a larger white light range, and it is beneficial to obtain a mixed light effect with a higher color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0082] Please refer to Fig.11 , Fig.11 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the second white light source are mixed in one embodiment of the present invention. Specifically, Fig.11It can be seen that when the second white light source is selected, multiple spectrum solutions can still be obtained within a larger white light range, and it is beneficial to obtain a mixed light effect with a higher color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0083] Please refer to Fig.12 , Fig.12 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the sixth monochromatic LED light source and the third white light source are mixed in one embodiment of the present invention. Specifically, Fig.12 It can be seen that when the third white light source is selected, multiple spectrum solutions can still be obtained within a larger white light range, and it is beneficial to obtain a mixed light effect with a higher color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0084] Please refer to Fig.13 , Fig.13 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the third monochromatic LED light source and the second white light source are mixed in one embodiment of the present invention. Specifically, Fig.13 It can be seen that when the second white light source is selected, multiple spectrum solutions can still be obtained within a larger white light range, which is conducive to obtaining a mixed light effect with a higher light color reproduction ability. On the premise of ensuring a higher color reproduction ability, it can play an auxiliary adjustment effect on the color saturation, so that the observed object has different color presentation effects. In this embodiment, the target color temperature of the mixed light is 4000K.

[0085] Please refer to Fig.14 , Fig.14 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the first composite light LED light source, the second monochromatic LED light source, the third monochromatic LED light source and the second white light source are mixed in one embodiment of the present invention. Specifically, Fig.14 It can be seen that when the second white light source is selected, multiple spectrum solutions can still be obtained within a larger white light range, which is conducive to obtaining a mixed light effect with a higher light color reproduction ability. On the premise of ensuring a higher color reproduction ability, it can play an auxiliary adjustment effect on the color saturation, so that the observed object has different color presentation effects. In this embodiment, the target color temperature of the mixed light is 4000K.

[0086] Please refer to Fig.15 , Fig.151 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source and the third white light source are mixed in one embodiment of the present invention. Specifically, when the second white light source and the third white light source are selected, and when mixing light with a lower color temperature or a higher color temperature as the target, multiple spectrum schemes can still be obtained within a larger white light range, and it is conducive to obtaining a mixed light effect with a higher color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0087] In this embodiment, in the light emitting unit 102, according to the spectral peak wavelength, the LED light source 1021 also includes a fifth type of light source. Specifically, by adding the fifth type of light source, the number of light emitting channels of the light emitting unit 102 is further increased, so that the adjustable color gamut range that can be covered by the light emitting unit 102 is further expanded, thereby further expanding the possibility of color rendering effect.

[0088] In this embodiment, the fifth type of light source includes one or more of an eighth monochromatic LED light source, a second composite light LED light source, a ninth monochromatic LED light source, a tenth monochromatic LED light source, and an eleventh monochromatic LED light source. Specifically, the eighth monochromatic LED light source is a monochromatic cyan light source, the ninth monochromatic LED light source is a positive green light source, the tenth monochromatic LED light source is a monochromatic deep red light source, the eleventh monochromatic LED light source is a monochromatic far red light source, and the second composite light LED light source is a composite mint green light source. In a specific embodiment, at least one spectral peak wavelength of the second composite light LED light source is in the range of 530nm to 560nm, the spectral peak wavelength of the eighth monochromatic LED light source is in the range of 485nm to 510nm, the spectral peak wavelength of the tenth monochromatic LED light source is in the range of 665nm to 700nm, the spectral peak wavelength of the eleventh monochromatic LED light source is greater than 700nm, and the spectral peak wavelength of the ninth monochromatic LED light source is in the range of 530nm to 560nm.

[0089] On the basis of the first, second, third and fourth light sources, the wavelength range involved in the fifth light source is further expanded and supplemented in the medium and long wavelength range and the long wavelength range. For example, the long wavelength range is further extended from the original range of 560nm to 665nm to a longer wavelength range. Thus, the light-emitting unit 102 can basically cover the full range of the long wavelength range, which is conducive to realizing more spectrum solutions and further improving the color reproduction ability. It can be understood that the eleventh monochromatic LED light source is still visible light.

[0090] Please refer to Fig.16 , Fig.161 is a schematic diagram showing the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth type of light source adopts the eighth monochromatic LED light source in one embodiment of the present invention. Specifically, Fig.16 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source and the eighth monochromatic LED light source are mixed, wherein Fig.16 It can be seen that when the eighth monochromatic LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color restoration ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0091] Please refer to Fig.17 , Fig.17 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth light source adopts the eleventh monochromatic LED light source in an embodiment of the present invention. Specifically, Fig.17 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the second monochromatic LED light source, the second white light source and the eleventh monochromatic LED light source are mixed, wherein Fig.17 It can be seen that when the eleventh monochromatic LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0092] Please refer to Fig.18 , Fig.18 1 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth light source adopts the eleventh monochromatic LED light source in an embodiment of the present invention. Specifically, Fig.18 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the first composite light LED light source, the second monochromatic LED light source and the eleventh monochromatic LED light source are mixed. Fig.18 It can be seen that when the eleventh monochromatic LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0093] Please refer to Fig.19 , Fig.191 is a schematic diagram showing the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth light source adopts the ninth monochromatic LED light source in one embodiment of the present invention. Specifically, Fig.19 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the first composite light LED light source, the second monochromatic LED light source, and the second composite light LED light source are mixed. Fig.19 It can be seen that when the second composite light LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0094] Please refer to Fig. 20 , Fig. 20 1 is a schematic diagram showing the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth light source adopts the ninth monochromatic LED light source in one embodiment of the present invention. Specifically, Fig. 20 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the third monochromatic LED light source, the second monochromatic LED light source, and the second composite light LED light source are mixed. Fig. 20 It can be seen that when the second composite light LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0095] Please refer to Fig.21 , Fig.21 1 is a schematic diagram showing the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth light source adopts the tenth monochromatic LED light source in one embodiment of the present invention. Specifically, Fig.21 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when the first monochromatic LED light source, the first white light source, the seventh monochromatic LED light source, the third monochromatic LED light source, the fourth monochromatic LED light source and the eleventh monochromatic LED light source are mixed, wherein Fig.21 It can be seen that when the eleventh monochromatic LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0096] Please refer to Fig. 22 , Fig. 221 is a schematic diagram of the relationship between the color authenticity index Rf and the color saturation index Rg when the fifth light source adopts the eleventh monochromatic LED light source in an embodiment of the present invention. Specifically, Fig.21 FIG. 1 shows a relationship diagram of an embodiment of a color authenticity index Rf and a color saturation index Rg when a first monochromatic LED light source, a first white light source, a seventh monochromatic LED light source, a second monochromatic LED light source, a second white light source, a third white light source and an eleventh monochromatic LED light source are mixed, wherein Fig. 22 It can be seen that when the eleventh monochromatic LED light source is selected, the entire long-wave band can be basically involved, which is conducive to realizing more spectral solutions and further improving the color reproduction ability. In this embodiment, the target color temperature of the mixed light is 4000K.

[0097] It is understandable that in actual use, the required LED light sources 1021 can be selected and turned on according to the requirements of color rendering effects, and the selected LED light sources 1021 are mixed with light at a suitable mixing ratio to obtain mixed light that meets the color rendering effect requirements.

[0098] The arrangement of the multiple LED light sources 1021 in each light-emitting unit 102 includes: matrix arrangement, ring arrangement, regular polygonal arrangement or strip arrangement. Specifically, a suitable arrangement can be selected according to actual conditions. For example, factors such as the specific application scenario or volume of the color observation device, or the number of LED light sources 1021 in the light-emitting unit 102. Among them, the ring arrangement includes a single ring arrangement or a multi-ring arrangement (for example, a double ring arrangement). Combined with reference Figure 2 In this embodiment, the arrangement of the multiple LED light sources 1021 in each light-emitting unit 102 is a matrix arrangement. The multiple LED light sources 1021 are arranged in a matrix, which can make the mixed light emitted by each light-emitting unit 102 more uniform, so that the mixed light emitted by the light source module 108 is more uniform. As an example, Figure 2 In the example, the light-emitting unit 102 includes all types of LED light sources 1021 listed above (ie, a total of 16 types of LED light sources 1021 ). Therefore, the multiple LED light sources 1021 in each light-emitting unit 102 are arranged in a 4*4 matrix.

[0099] In other embodiments, other arrangements may be selected according to the number of LED light sources in the light-emitting unit. For example, taking a double ring arrangement as an example, when the light-emitting unit contains the 16 LED light sources with the above-listed spectral peak wavelengths, and the number of LED light sources with the same spectral peak wavelength is one, 8 LED light sources are arranged in the inner ring, and the remaining 8 LED light sources are arranged in the outer ring; or, when the light-emitting unit contains five LED light sources with the spectral peak wavelengths, and the number of LED light sources with the same spectral peak wavelength is one, the five LED light sources are arranged in a "cross" shape.

[0100] The observation module is used to place the object to be observed, so as to allow the user to observe the color characteristics of the object under mixed light to meet the needs of different customers for color rendering preferences. The observation module 106 includes an observation box or an exhibition wall. As an example, the color observation device is a colorimetric light box, and the observation module is an observation box.

[0101] In this embodiment, the light source module is arranged on the top of the observation box, and the light source module and the observation box form a cavity. Specifically, the observation box includes a bottom plate, and side plates and a back plate arranged on the bottom, and the light source module is arranged on the top of the observation box, and the light source module and the bottom plate, side plates and back plate of the observation box form a cavity.

[0102] As an example, when there are multiple (for example, two) light source modules 108, the observation box includes multiple isolated observation spaces, and the observation spaces correspond to the light source modules 108 one by one. Accordingly, the multiple light source modules 108 emit light of different spectra, so as to compare the colors of the objects to be observed in different observation spaces. For example, a partition is provided in the observation box, so that the observation box is divided into multiple isolated observation spaces by the partition.

[0103] In this embodiment, the color of the inner wall of the observation box is neutral gray. Since the reflection characteristics of neutral gray paint for each band of light are consistent, the spectral composition of the light emitted by the light source is avoided to change. Therefore, the color rendering of the objects placed in the observation module 106 is more realistic under the neutral gray background. It is understandable that when a partition is provided in the observation box, the color of the partition surface is also neutral gray. Correspondingly, in other embodiments, when the observation module is an exhibition wall, the color of the exhibition wall surface is also neutral gray.

[0104] In this embodiment, the control module 107 is used to individually control the luminous intensity of the LED light source 1021 corresponding to each channel in the light-emitting unit 102. Specifically, the control module 107 is used to control the luminous intensity of the LED light source 1021 corresponding to each channel according to the mixed light ratio. As an example, the control module 107 is installed on the light source module 108. In other embodiments, the control module can also be coupled to the light source module in a wired or wireless manner to achieve control of the light source module.

[0105] Specifically, by utilizing the characteristic of LED light sources with adjustable luminous intensity, different mixed light ratios are obtained by individually controlling the luminous intensity of the LED light sources corresponding to each channel in the light-emitting unit 102, thereby obtaining a variety of mixed lights corresponding to any color coordinate points in the area enclosed by the color coordinate points corresponding to each LED light source in the light-emitting unit on the CIE1931 chromaticity diagram, thereby achieving diversity in spectral schemes and high flexibility in mixing light.

[0106] It should be noted that the control module 107 can also control the corresponding LED light source 1021 in the light-emitting unit 102 to emit mixed light matching the lighting scene according to the lighting scene, thereby meeting the preset market demand for colorimetric scenes.

[0107] In this embodiment, the control module 107 includes a storage unit (not shown) and a dimming unit (not shown), wherein the dimming unit is used to adjust the luminous intensity of the LED light source 1021 of each luminous channel, and the storage unit is used to store the information of the channel address of the LED light source of each luminous channel in the dimming unit. Accordingly, in this embodiment, the color observation device also includes: a visualization configuration module, which is used to present the information of the channel address stored in the storage unit to the user in the form of visualization information, so that the user can set the luminous intensity of the LED light source 1021 under the corresponding channel address combination to obtain the dimming configuration information, and is also used to store the dimming configuration information in the storage unit in the form of a lighting scene.

[0108] The storage unit stores information on the channel addresses of the LED light sources 1021 of each light-emitting channel and different spectrum schemes corresponding to the dimming configuration information, so that it is easy to realize any light environment spectrum according to actual lighting needs and emit light with the required light color and light parameters.

[0109] The channel address information of each channel in the dimming unit is written in the storage unit. Since the visualization configuration module stores the dimming configuration information in the storage unit in the form of a lighting scene, each lighting scene has corresponding dimming configuration information. Therefore, the dimming unit adjusts the luminous intensity of the LED light source 1021 of each light-emitting channel according to the dimming configuration information corresponding to the lighting scene based on the lighting scene stored in the storage unit. As an example, the dimming unit is a decoder (for example, a DMX512 decoder), and the decoder is connected to the LED light source 1021 corresponding to each channel, so as to allocate the driving current of each light-emitting channel.

[0110] The visualization configuration module is used to retrieve the information of the channel address stored in the storage unit, and present the information of the channel address stored in the storage unit to the user in the form of visualization information, so that the user can combine and light up the LED light sources 1021 of each light-emitting channel according to the needs, and configure the luminous intensity of each LED light source 1021. Specifically, the visualization configuration module can present the precision adjustment of the dimming unit in the form of 256 levels (0-255 levels) or in the form of 0-100% ratio, so that the user can turn on or off the LED light sources 1021 of each light-emitting channel, and adjust the luminous intensity, thereby obtaining the dimming configuration information, and storing the dimming configuration information in the form of a lighting scene in the storage unit, so that the dimming unit can be used to adjust the luminous intensity of the LED light sources 1021 of each light-emitting channel according to the lighting scene.

[0111] In this embodiment, the illumination scene is switched along the time axis; the dimming unit is used to adjust the luminous intensity of the LED light source corresponding to each light-emitting channel according to the dimming configuration information corresponding to the illumination scene at the preset switching time. By adjusting the luminous intensity of the LED light source 1021 corresponding to each light-emitting channel at the preset time, the color observation device can emit light of different light colors and light parameters as time changes. Among them, the way in which the illumination scene is switched along the time axis can be set according to actual needs, for example, a sinusoidal periodic change, a cosine periodic change, etc.

[0112] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A color observation device, characterized in that: include: A light source module, wherein the light source module comprises one or more light-emitting units, wherein the light-emitting units comprise at least four different individually controllable LED light sources according to light-emitting channels, wherein the different LED light sources have different spectral peak wavelengths and are used to emit light of different colors, wherein the light-emitting units are used to emit mixed light according to different mixed light ratios, wherein in the light-emitting units, according to spectral peak wavelengths, the LED light sources comprise at least a first-type light source, a second-type light source, a third-type light source, and a fourth-type light source having different spectral peak wavelengths, wherein the areas enclosed by the color coordinate points corresponding to the first-type light source, the second-type light source, the third-type light source, and the fourth-type light source on the color coordinates at least cover the color coordinate points corresponding to part of the white light; An observation module, which is disposed on the optical path of the light source module and is used to place an object to be observed; A control module, the control module is used to control the light emitting unit to emit the mixed light; wherein the first type of light source is a first monochromatic LED light source; the fourth type of light source includes one or more of a second monochromatic LED light source, a third monochromatic LED light source and a fourth monochromatic LED light source; the third type of light source includes one or more of a first composite light LED light source, a fifth monochromatic LED light source, a sixth monochromatic LED light source and a seventh monochromatic LED light source; the spectral peak wavelength of the first monochromatic LED light source is in the range of 510nm to 550nm; the spectral peak wavelength of the second monochromatic LED light source is in the range of 460nm to 485nm; the spectral peak wavelength of the third monochromatic LED light source is in the range of 440nm to 460nm; the spectral peak wavelength of the fourth monochromatic LED light source is in the range of 420nm to 440nm; at least one spectral peak wavelength of the first composite light LED light source is in the range of 580nm to 610nm, the spectral peak wavelength of the fifth monochromatic LED light source is in the range of 620nm to 635nm, the spectral peak wavelength of the sixth monochromatic LED light source is in the range of 590nm to 620nm, and the spectral peak wavelength of the seventh monochromatic LED light source is in the range of 635nm to 665nm.

2. The color observation device according to claim 1, characterized in that According to the light emitting channel, the light emitting unit includes at least one monochromatic light LED light source and one composite light LED light source.

3. The color observation device according to claim 2, characterized in that The composite light LED light source is a phosphor-converted LED light source.

4. The color observation device according to claim 1, wherein: The areas enclosed by the color coordinate points corresponding to the first type light source, the second type light source, the third type light source and the fourth type light source on the color coordinates cover the color coordinate points corresponding to some white light of a preset color temperature, and the preset color temperature is 2500K to 7000K.

5. The color observation device according to claim 1, characterized in that The visible light region includes a first spectral range, a third spectral range, and a second spectral range located between the first spectral range and the third spectral range, the wavelengths of the first spectral range, the second spectral range and the third spectral range increase successively, the first type of light source is located in the second spectral range, the third type of light source is located in the third spectral range, the fourth type of light source is located in the first spectral range, and the second type of light source is a white light source.

6. The color observation device according to claim 1, characterized in that: In the light-emitting unit, the white light source includes one or more of a first white light source, a second white light source and a third white light source according to the spectral peak wavelength, the color temperature range of the first white light source is 3500K to 5500K, the color temperature of the second white light source is 1800K to 3500K, and the color temperature of the third white light source is 5500K to 7000K.

7. The color observation device according to claim 6, characterized in that In the light-emitting unit, the LED light source further includes a fifth type of light source according to the spectral peak wavelength, and the fifth type of light source includes one or more of an eighth monochromatic LED light source, a second composite light LED light source, a ninth monochromatic LED light source, a tenth monochromatic LED light source, and an eleventh monochromatic LED light source; At least one spectral peak wavelength of the second composite light LED light source is in the range of 530nm to 560nm, the spectral peak wavelength of the eighth monochromatic LED light source is in the range of 485nm to 510nm, the spectral peak wavelength of the ninth monochromatic LED light source is in the range of 530nm to 560nm, the spectral peak wavelength of the tenth monochromatic LED light source is in the range of 665nm to 700nm, and the spectral peak wavelength of the eleventh monochromatic LED light source is greater than 700nm.

8. The color observation device according to any one of claims 1 to 7, characterized in that: In the light-emitting unit, the number of LED light sources corresponding to the same spectral peak wavelength is one or more, and the LED light sources with the same spectral peak wavelength are located in the same light-emitting channel, or in different light-emitting channels.

9. The color observation device according to claim 1, wherein: The control module is used to individually control the luminous intensity of the LED light source corresponding to each channel in the light-emitting unit; or, the control module is used to control the light-emitting unit to emit mixed light matching the lighting scene according to the lighting scene.

10. The color observation device according to claim 1, wherein: In the case that there are multiple light-emitting units, the arrangement of the multiple light-emitting units includes: matrix arrangement, ring arrangement, regular polygonal arrangement or strip arrangement.

11. The color observation device according to claim 1, wherein: The arrangement of the multiple LED light sources in each of the light-emitting units includes: matrix arrangement, ring arrangement, regular polygonal arrangement or strip arrangement.

12. The color observation device according to claim 1, wherein: The observation module includes an observation box or an exhibition wall, wherein, when the observation module is an observation box, the light source module is arranged on the top of the observation box, and the light source module and the observation box form a cavity.

13. The color observation device according to claim 12, characterized in that: The number of the light source modules is multiple; The observation box includes a plurality of isolated observation spaces, and the observation spaces correspond to the light source modules one by one.

14. The color observation device according to claim 12 or 13, characterized in that: The color of the inner wall of the observation box is neutral gray; the color of the surface of the exhibition wall is neutral gray.

15. The color observation device according to claim 1, wherein: The light source module includes a light source box and a light homogenizing plate arranged on the light emitting surface of the light source box; The one or more light emitting units are located in the light source box.

16. The color observation device according to claim 1, wherein: The control module includes a storage unit and a dimming unit, wherein: The dimming unit is used to adjust the luminous intensity of the LED light source of each luminous channel; The storage unit is used to store information of the channel address of the LED light source of each of the light-emitting channels in the dimming unit; The color observation device also includes: a visualization configuration module, which is used to present the information of the channel address stored in the storage unit to the user in the form of visualization information, so that the user can set the luminous intensity of the LED light source under the corresponding channel address combination to obtain dimming configuration information, and is also used to store the dimming configuration information in the storage unit in the form of a lighting scene.

17. The color observation device according to claim 16, wherein: The lighting scene is switched along the time axis; The dimming unit is used to adjust the luminous intensity of the LED light sources corresponding to each light emitting channel according to the dimming configuration information corresponding to the lighting scene at a preset switching time.

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