A light source with high spectral richness

Abstract

This invention provides a light source with high chromatic color richness. The high chromatic color richness light source is based on the difference in stimulation patterns of the three types of cone cells in the human eye's color perception mechanism between monochromatic light and mixed light that can be identified as that color. The visible light band from 380nm to 780nm is divided into three bands using 430nm and 680nm as sub-band wavelength values. Furthermore, it is designed based on the emission peak wavelength of LED chips and phosphors using the corresponding LED chips as excitation sources, ensuring the richness of the emission peak wavelengths of the high chromatic color richness light source in each band, thus guaranteeing the chromatic color richness of the light source. Therefore, it is beneficial in the human eye's color perception mechanism to make the chromatic color of the object being observed more similar to that of the observed object, thereby improving the human eye's ability to compare and filter differences in the observed object and providing a natural, realistic, and comfortable visual experience.

Description

Technical Field

[0001] This utility model relates to the field of light sources, and in particular to a light source with high chromatographic richness. Background Technology

[0002] With the continuous development of light source technology, the quality of healthy and comfortable light color is receiving increasing attention. People's requirements for the color rendering quality and comfort of light sources are also getting higher and higher. For example, the concept of full-spectrum lighting has been proposed based on the requirements for the comfort and color rendering quality of lighting sources, and four-color technology has been proposed based on the requirements for the color rendering quality of display light sources.

[0003] However, for the LED chips used in current lighting and display light sources, due to the generally narrow emission wavelength and distinct emission peak wavelengths, even using multiple LED chips combined with appropriate phosphor ratios, it is difficult to achieve overall intensity convergence between the emission spectrum of the light source and the solar spectrum within the complete visible light wavelength range (380nm–780nm). Therefore, existing lighting and display light sources generally utilize the red, green, and blue primary color rendering mechanism, ensuring color rendering quality within the 430nm–680nm wavelength range through reasonable luminous intensity design of the three primary color bands. In other words, current lighting light sources, even those designed based on the concept of full-spectrum lighting, only achieve convergence between the emission spectrum of the lighting source and the solar spectrum within the 430nm–680nm wavelength range by using multiple LED chips combined with appropriate phosphor ratios. Although light sources designed based on the aforementioned full-spectrum lighting concept can achieve good color rendering quality, such lighting and display light sources still cannot provide the human eye with a natural, realistic, and comfortable visual experience. This is because, for those skilled in the art who focus on the design and manufacture of light sources, although they are familiar with the three primary color display mechanism, it is difficult to understand the human eye's color perception mechanism across different fields.

[0004] Specifically, the human retina contains two types of photoreceptor cells: rod cells and cone cells. Rod cells function in low light but lack color recognition capabilities; therefore, people can see objects in dim light but cannot distinguish colors. Cone cells, on the other hand, function in bright light. Our ability to see color is thanks to these cone cells, which absorb light waves of different wavelengths and transmit the information to the brain. The brain then processes this information to produce what we call color perception. Normally, the human retina contains three types of cone cells that can sense red, green, and blue light respectively. This is why red, green, and blue are also called the three primary colors, corresponding to L-cone cells, M-cone cells, and S-cone cells, respectively. In other words, while the color of light is related to wavelength, for the human eye, color perception stems from different combinations of responses of the three types of cone cells to light. For example, yellow light simultaneously stimulates both L and M cone cells, triggering the brain's perception of yellow. Therefore, even a mixture of red and green light, without a change in wavelength, can be perceived as yellow by the brain. In addition, there are cases where the stimulation patterns of the three types of cone cells are different but may be perceived as the same color by the brain. For example, the stimulation patterns of monochromatic violet light and red-blue mixed light (perceived as violet by the human eye) on the three types of cone cells are compared in the table below:

[0005] Light source type S-cone stimulation level Degree of stimulation of the M cone The degree of stimulation of the L-cone Monochrome purple light high Extremely low Low Red and blue mixed light high Low high

[0006] Regarding the perception of colors formed by mixed light, the color spectrum entering the eye is not the same as the natural color spectrum of the object being observed. Furthermore, the peak wavelengths of cone cells vary among individuals; some people even have four types of cone cells. This leads to differences in the perception of colors formed by mixed light, especially when the stimulation patterns of the three types of cone cells differ between the mixed light and its monochromatic counterpart. Additionally, the varying reflectivity of objects to different colors of light in the mixed light also affects the human eye's color perception. Therefore, while light sources designed based on the aforementioned full-spectrum illumination concept can achieve good color rendering quality due to their emission spectrum in the 430nm–680nm wavelength range, which is similar to that of sunlight, their chromatic richness is far inferior to that of sunlight, preventing the color spectrum entering the eye from corresponding to the natural color spectrum of the object being observed. Consequently, they cannot provide the human eye with a natural, realistic, and comfortable visual experience. Utility Model Content

[0007] One objective of this invention is to provide a light source with high chromatic richness. This light source is based on the differences in stimulation patterns of the three types of cone cells in the human eye by monochromatic light and mixed light that can be identified as that color, according to the human eye's color perception mechanism. The visible light band from 380nm to 780nm is divided into three bands using 430nm and 680nm as sub-band wavelength values. Furthermore, it is designed based on the emission peak wavelengths of LED chips and phosphors using the corresponding LED chips as excitation sources, ensuring the richness of the emission peak wavelengths in each band, thus guaranteeing the richness of the light source's chromatic color. Therefore, it is beneficial in the human eye's color perception mechanism to make the chromatic color of the object being observed more similar to that of the observed object, thereby improving the human eye's ability to compare and filter differences in the observed object and providing a natural, realistic, and comfortable visual experience.

[0008] Another objective of this invention is to provide a light source with high chromatographic richness, wherein the light source has a variety of LED chips and a variety of phosphors that use the corresponding LED chips as excitation sources, and correspondingly has at least two emission peak wavelengths generated by the LED chips in the band greater than or equal to 380 nm and less than 430 nm with a peak wavelength difference of greater than or equal to 5 nm, at least two emission peak wavelengths generated by the LED chips in the band greater than or equal to 430 nm and less than 490 nm with a peak wavelength difference of greater than or equal to 5 nm, and at least two emission peak wavelengths generated by the phosphors in the band greater than or equal to 490 nm and less than 680 nm with a peak wavelength difference of greater than or equal to 5 nm. The light source has at least three emission peak wavelengths with a wavelength difference of 5 nm or more, and at least two emission peak wavelengths with a wavelength difference of 5 nm or more generated by the LED chip in the band of 680 nm or more and less than or equal to 780 nm. This ensures the richness of the emission peak wavelengths of the light source in the three bands in the visible light band of 380 nm to 780 nm, and correspondingly ensures the richness of the color spectrum of the light source. Therefore, it is beneficial to improve the human eye's ability to compare and filter the differences of the observed object in the color perception mechanism, so that the color spectrum of the observed object can be similar to that of the observed object, and the human eye can obtain a natural, realistic and comfortable visual experience.

[0009] Another objective of this invention is to provide a light source with high chromatographic richness. Based on the emission peak wavelength design of the LED chip and the phosphor that meet the aforementioned requirements, the light source with high chromatographic richness does not need to be designed to converge with the solar spectrum in terms of emission spectrum. This allows the chromatogram of light entering the eye to converge with the chromatogram of the object being observed, thereby improving the human eye's ability to compare and filter the differences of the object being observed and providing the human eye with a natural, realistic, and comfortable visual experience. Therefore, it is beneficial to simplify the calculation of the ratio of the LED chip and the phosphor and is easy to implement.

[0010] Another objective of this invention is to provide a light source with high chromatic richness, wherein the light source with high chromatic richness does not require a design based on convergence with the solar spectrum in its emission spectrum, thus providing the human eye with a natural, realistic, and comfortable visual experience. In other words, the light source with high chromatic richness of this invention, in the design of the emission peak wavelengths of the LED chip and the phosphor, departs from the design concept of traditional full-spectrum lighting, which requires the emission spectrum to converge with the solar spectrum. This approach is easy to implement and helps to ensure the diversity of the emission spectrum of the light source with high chromatic richness, thereby adapting to different scenario requirements.

[0011] Another objective of this invention is to provide a light source with high chromatic color richness. Based on the human eye's color perception mechanism, although monochromatic light in the 430nm to 680nm wavelength range and mixed light that can be identified as that color stimulate the three types of cone cells in the human eye in a similar way, the different reflective abilities of objects to different colors of light in the mixed light will affect the human eye's perception of the true color of the object. Therefore, this invention is based on the design concept of ensuring the chromatic color richness of the light source with high chromatic color richness so that the chromatic color of light entering the eye can be similar to the chromatic color of the object being viewed in the human eye's color perception mechanism. Based on the design of the emission peak wavelength of the LED chip and the phosphor that meets the aforementioned requirements, the emission peak wavelength of the light source with high chromatic color richness is ensured to be rich in the 430nm to 680nm wavelength range and the entire visible light range including this wavelength range. Correspondingly, when the light source with high chromatic color richness is used as an illumination source to illuminate an object of any chromatic color, the object can reflect light that is similar to its chromatic color. Therefore, it is beneficial to obtain a natural, realistic and comfortable visual experience when using the light source with high chromatic color richness as an illumination source.

[0012] Another objective of this invention is to provide a light source with high chromatic color richness. Based on the human eye's color perception mechanism, monochromatic light in the 380nm to 430nm wavelength band and mixed light that can be identified as that color do not stimulate the three types of cone cells in the human eye in the same way. Furthermore, the different reflective abilities of objects to different colors of light in the mixed light also affect the human eye's perception of the object's true color. Therefore, this invention is based on the design concept of ensuring the chromatic color richness of the light source with high chromatic color richness, so that the chromatic color of light entering the eye can be similar to the chromatic color of the object being viewed in the human eye's color perception mechanism. Based on the design of the emission peak wavelength of the LED chip and the phosphor that meets the aforementioned requirements, the emission peak wavelength of the light source with high chromatic color richness is ensured to be rich in the 380nm to 430nm wavelength band and the entire visible light range including this wavelength band. Correspondingly, when the light source with high chromatic color richness is used as an illumination source to illuminate an object of any chromatic color, the object can reflect light that is similar to its chromatic color. Therefore, it is beneficial to obtain a natural, realistic and comfortable visual experience when using the light source with high chromatic color richness as an illumination source.

[0013] Another objective of this invention is to provide a light source with high chromatic richness. Based on the design concept of ensuring the richness of the chromatic color of the light source so that the chromatic color of the eye can be similar to that of the object being observed in the human eye's color perception mechanism, this invention, based on the design of the emission peak wavelength of the LED chip and the phosphor that meet the aforementioned requirements, also ensures the richness of the emission peak wavelength of the light source with high chromatic richness in the 680nm to 780nm band and the entire visible light range including this band, so as to meet the visual perception generated by the human eye's adaptation to sunlight, thereby obtaining a natural, realistic and comfortable visual experience when the light source with high chromatic richness is used as a display light source or lighting light source.

[0014] Another objective of this invention is to provide a light source with high chromatic richness, wherein the light source further has at least two emission peak wavelengths generated by phosphors in a band greater than 780 nm and less than or equal to 850 nm, with a peak wavelength difference between each other greater than or equal to 5 nm, so as to further satisfy the non-visual perception generated by the human eye and skin's adaptation to sunlight.

[0015] Another objective of this invention is to provide a light source with high chromatic richness, wherein the light source with high chromatic richness has at least two emission modes based on the adjustment / selection requirements of color temperature, wherein the emission peak wavelength of the LED chip emitting light and the phosphor packaged therewith in at least one emission mode meets the aforementioned requirements of the emission peak wavelength design of the LED chip and the phosphor, thereby obtaining a natural, realistic and comfortable visual experience in at least one emission mode of the light source with high chromatic richness.

[0016] To achieve at least one of the above objectives, this utility model provides a light source with high chromatographic richness. The light source has at least two emission peak wavelengths generated by an LED chip in a wavelength band greater than or equal to 380 nm and less than 430 nm, with a peak wavelength difference of greater than or equal to 5 nm between each wavelength; at least two emission peak wavelengths generated by an LED chip in a wavelength band greater than or equal to 430 nm and less than 490 nm, with a peak wavelength difference of greater than or equal to 5 nm between each wavelength; at least three emission peak wavelengths generated by a phosphor in a wavelength band greater than or equal to 490 nm and less than 680 nm, with a peak wavelength difference of greater than or equal to 5 nm between each wavelength; and at least three emission peak wavelengths generated by an LED chip in a wavelength band greater than or equal to 680 nm and less than or equal to 780 nm, with a large peak wavelength difference between each wavelength. The light source has at least two emission peak wavelengths equal to or greater than 5 nm, wherein the LED chip and the phosphor are encapsulated by LED beads. The high chromatic richness light source includes a first series LED bead group formed by multiple LED beads connected in series, and a second series LED bead group formed by multiple LED beads connected in series. Each series LED bead group includes LED beads encapsulated with LED chips having emission peak wavelengths greater than or equal to 380 nm and less than 430 nm. Among the LED beads encapsulated with LED chips having emission peak wavelengths greater than or equal to 380 nm and less than 430 nm, LED chips having emission peak wavelengths greater than or equal to 430 nm and less than 490 nm are also encapsulated. Furthermore, among the LED beads encapsulated with LED chips having emission peak wavelengths greater than or equal to 430 nm and less than 490 nm, the corresponding phosphor is also encapsulated.

[0017] In one embodiment, the same LEDs in the same LED string group are connected in a staggered manner, meaning that any two adjacent LEDs in the same LED string group along the string direction are different LEDs.

[0018] In one embodiment, the LED chip with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm is individually packaged.

[0019] In one embodiment, the lamp bead containing the LED chip with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm also contains the LED chip with an emission peak wavelength greater than or equal to 430 nm and less than 490 nm.

[0020] In one embodiment, the high chromatic richness light source further includes at least one third series lamp bead group formed by multiple lamp beads connected in series, wherein each lamp bead in the third series lamp bead group is a lamp bead formed by individually packaging the LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm, and the power supply of the third series lamp bead group is configured to be independently controllable relative to the first series lamp bead group and the second series lamp bead group, so that the third series lamp bead group can be shared in different light emission modes.

[0021] In one embodiment, the first series LED group and the second series LED group have the same combination of LEDs and are connected in parallel with each other.

[0022] In one embodiment, the first series LED group and the second series LED group have different combinations of LEDs and are respectively lit up in different light emission modes.

[0023] In one embodiment, at least two emission peak wavelengths generated by the LED chip in the band of 380 nm or greater and less than 430 nm, with a peak wavelength difference of 5 nm or greater, are located in different bands of the following five bands: the band of 380 nm or greater and less than 390 nm, the band of 390 nm or greater and less than 400 nm, the band of 400 nm or greater and less than 410 nm, the band of 410 nm or greater and less than 420 nm, and the band of 420 nm or greater and less than 430 nm.

[0024] In one embodiment, at least two emission peak wavelengths generated by the LED chip in the band of 430 nm or greater and less than 490 nm, with a peak wavelength difference of 5 nm or greater, are located in different bands of the following six bands: the band of 430 nm or greater and less than 440 nm, the band of 440 nm or greater and less than 450 nm, the band of 450 nm or greater and less than 460 nm, the band of 460 nm or greater and less than 470 nm, the band of 470 nm or greater and less than 480 nm, and the band of 480 nm or greater and less than 490 nm.

[0025] In one embodiment, the maximum difference between at least three emission peak wavelengths generated by the phosphor in the band of 490 nm or greater and less than 680 nm is greater than or equal to 50 nm, i.e., the difference between the minimum emission peak wavelength and the maximum emission peak wavelength is greater than or equal to 50 nm.

[0026] In one embodiment, at least two emission peak wavelengths generated by the LED chip in the band of 680 nm or greater and 780 nm with a peak wavelength difference of 5 nm or greater fall in different bands of the following ten bands: band of 680 nm or greater and less than 690 nm, band of 690 nm or greater and less than 700 nm, band of 700 nm or greater and less than 710 nm, band of 710 nm or greater and less than 720 nm, band of 720 nm or greater and less than 730 nm, band of 730 nm or greater and less than 740 nm, band of 740 nm or greater and less than 750 nm, band of 750 nm or greater and less than 760 nm, band of 760 nm or greater and less than 770 nm, and band of 770 nm or greater and less than 780 nm.

[0027] In one embodiment, the high chromatographic richness light source further has at least two emission peak wavelengths generated by phosphors in a band greater than or equal to 780 nm and less than or equal to 850 nm, with a peak wavelength difference between each other greater than or equal to 5 nm.

[0028] The further objectives and advantages of this invention will become fully apparent from the following description and accompanying drawings. Attached Figure Description

[0029] Figure 1 The emission spectrum of a light source with high chromatographic richness according to an embodiment of the present invention.

[0030] Figure 2 The emission spectrum of a light source with high chromatographic richness according to another embodiment of the present invention.

[0031] Figure 3 The emission spectrum of a light source with high chromatographic richness according to another embodiment of the present invention.

[0032] Figure 4A An exemplary packaging structure for a high chromatographic richness light source according to one embodiment of the present invention.

[0033] Figure 4B Another exemplary packaging structure for the high chromatographic richness light source according to the above embodiments of the present invention.

[0034] Figure 4C Another exemplary packaging structure for the high chromatographic richness light source according to the above embodiments of the present invention.

[0035] Figure 5A An exemplary lamp bead layout for a high chromatic richness light source according to an embodiment of the present invention.

[0036] Figure 5B An exemplary lamp bead layout for a high chromatic richness light source according to another embodiment of the present invention.

[0037] Figure 5C An exemplary lamp bead layout for a high chromatic richness light source according to another embodiment of the present invention. Detailed Implementation

[0038] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0039] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the elements can be multiple, and the term "a" should not be understood as a limitation on the number.

[0040] This invention provides a light source with high chromatic richness. The high chromatic richness light source is based on the differences in stimulation patterns of the three types of cone cells in the human eye's color perception mechanism between monochromatic light and mixed light that can be identified as that color. The visible light band from 380nm to 780nm is divided into three bands using 430nm and 680nm as sub-band wavelength values. Furthermore, it is designed based on the emission peak wavelengths of LED chips and phosphors using the corresponding LED chips as excitation sources. This ensures the richness of the emission peak wavelengths of the high chromatic richness light source in each band, correspondingly ensuring the richness of the light source's chromatic color. Therefore, it is beneficial in the human eye's color perception mechanism to make the chromatic color of the object being observed more similar to that of the observed object, thereby improving the human eye's ability to compare and filter differences in the observed object and providing a natural, realistic, and comfortable visual experience.

[0041] Specifically, the high chromatographic richness light source has multiple LED chips and multiple phosphors using the corresponding LED chips as excitation sources, corresponding to at least two emission peak wavelengths generated by the LED chips in the band greater than or equal to 380 nm and less than 430 nm with a peak wavelength difference of greater than or equal to 5 nm, at least two emission peak wavelengths generated by the LED chips in the band greater than or equal to 430 nm and less than 490 nm with a peak wavelength difference of greater than or equal to 5 nm, and at least three emission peak wavelengths generated by the phosphors in the band greater than or equal to 490 nm and less than 680 nm with a peak wavelength difference of greater than or equal to 5 nm. The light source has at least two emission peak wavelengths, including those with a peak wavelength difference of 5 nm or more between 680 nm and 780 nm, generated by the LED chip. This ensures the richness of the emission peak wavelengths of the light source in the three visible light bands from 380 nm to 780 nm, which in turn ensures the richness of the color spectrum of the light source. This is beneficial in the human eye's color perception mechanism, allowing the color spectrum of the object being observed to converge with that of the object being observed, thereby improving the human eye's ability to compare and filter differences in the object being observed, and providing the human eye with a natural, realistic, and comfortable visual experience.

[0042] It is worth mentioning that, based on the emission peak wavelength design of the LED chip and the phosphor that meet the aforementioned requirements, the light source with high chromatographic richness does not need to be designed to converge with the solar spectrum in terms of emission spectrum. This allows the chromatogram of the light entering the eye to converge with the chromatogram of the object being observed, thereby improving the human eye's ability to compare and filter the differences of the object being observed and providing the human eye with a natural, realistic and comfortable visual experience. Therefore, it is beneficial to simplify the calculation of the ratio of the LED chip and the phosphor and make it easy to implement.

[0043] Specifically, the restriction of "a peak wavelength difference greater than or equal to 5 nm between each other" does not apply to the peak wavelength difference between all emission peak wavelengths within the aforementioned three bands. For example, when the high chromatic richness light source has four emission peak wavelengths generated by the LED chip in a band greater than or equal to 380 nm and less than 430 nm, even if only two of the emission peak wavelengths satisfy a peak wavelength difference greater than or equal to 5 nm between each other, it still meets the description of "having at least two emission peak wavelengths generated by the LED chip in a band greater than or equal to 380 nm and less than 430 nm with a peak wavelength difference greater than or equal to 5 nm between each other". Therefore, the same emission peak wavelength can be generated by different LED chips or phosphors, and different emission peak wavelengths can also be generated by the same LED chip or phosphor, for example, at least two different emission peak wavelengths can be generated by a multi-quantum-well LED chip. However, based on this restriction, the design of the emission peak wavelength of the LED chip and the phosphor that meets the aforementioned requirements can ensure the dispersion and quantity of the emission peak wavelength of the high chromatographic richness light source in the aforementioned three bands, and correspondingly ensure the richness of the emission peak wavelength of the high chromatographic richness light source in these three bands.

[0044] Furthermore, the high chromatic richness light source does not require a design that converges with the solar spectrum in terms of emission spectrum, yet it can still provide the human eye with a natural, realistic, and comfortable visual experience. In other words, the high chromatic richness light source of this invention departs from the traditional full-spectrum lighting concept that requires the emission spectrum to converge with the solar spectrum in terms of the emission peak wavelength design of the LED chip and the phosphor. This approach is easy to implement and helps to ensure the diversity of the emission spectrum of the high chromatic richness light source, thus enabling it to adapt to different scenario requirements.

[0045] Specifically, in the high chromatographic richness light source of this invention, at least two emission peak wavelengths generated by the LED chip in the wavelength band greater than or equal to 380 nm and less than 430 nm, with a peak wavelength difference greater than or equal to 5 nm, preferably fall within different bands of the following five bands: greater than or equal to 380 nm and less than 390 nm, greater than or equal to 390 nm and less than 400 nm, greater than or equal to 400 nm and less than 410 nm, greater than or equal to 410 nm and less than 420 nm, and greater than or equal to 420 nm and less than 430 nm. This further ensures the richness of the emission peak wavelengths of the high chromatographic richness light source in the 380 nm to 430 nm wavelength band.

[0046] It is worth mentioning that, based on the human eye's color perception mechanism, monochromatic light in the 380nm to 430nm wavelength range and mixed light that can be identified as that color stimulate the three types of cone cells in the human eye in different ways. Furthermore, the different reflective abilities of objects to different colors of light in the mixed light also affect the human eye's perception of the object's true color. Therefore, this invention is based on the design concept of ensuring the richness of the color spectrum of the light source with high color spectrum richness, so that the color spectrum entering the eye can be similar to the color spectrum of the object being viewed in the human eye's color perception mechanism. Based on the design of the emission peak wavelength of the LED chip and the phosphor that meets the aforementioned requirements, the emission peak wavelength of the light source with high color spectrum richness is ensured to be rich in the 380nm to 430nm wavelength range and the entire visible light range including this wavelength range. Correspondingly, when the light source with high color spectrum richness is used as an illumination source to illuminate an object of any color spectrum, the object can reflect light that is similar to its color spectrum. Therefore, it is beneficial to obtain a natural, realistic and comfortable visual experience when the light source with high color spectrum richness is used as an illumination source.

[0047] Furthermore, in the high chromatic richness light source of this invention, at least two emission peak wavelengths generated by the LED chip in the band greater than or equal to 430 nm and less than 490 nm, with a peak wavelength difference greater than or equal to 5 nm, preferably fall within different bands of the following six bands: greater than or equal to 430 nm and less than 440 nm, greater than or equal to 440 nm and less than 450 nm, greater than or equal to 450 nm and less than 460 nm, greater than or equal to 460 nm and less than 470 nm, greater than or equal to 470 nm and less than 480 nm, and greater than or equal to 480 nm and less than 490 nm. Preferably, there is a maximum difference of greater than or equal to 50 nm among at least three emission peak wavelengths generated by the phosphor in the band greater than or equal to 490 nm and less than 680 nm, that is, the difference between the minimum emission peak wavelength and the maximum emission peak wavelength is greater than or equal to 50 nm. This further ensures the richness of the emission peak wavelength of the high chromatographic richness light source in the 430nm to 680nm band.

[0048] It is worth mentioning that although monochromatic light in the 430nm to 680nm wavelength range and mixed light that can be identified as that color tend to stimulate the three types of cone cells in the human eye in the same way, the different reflective abilities of objects to different colors of light in the mixed light will also affect the human eye's perception of the true color of the object. For example, for a yellow lemon, its reflective ability to yellow light is strong, making it bright yellow in sunlight, but its reflective ability to red and green mixed light that can be identified as yellow by the human eye is weak and there is a certain difference. Therefore, under the illumination of traditional LED lights, it usually appears as a dark yellow / yellow-green tone. Therefore, this invention is based on the design concept of ensuring the richness of the chromatic color of the light source with high chromatic color richness, so that the chromatic color of the light entering the eye can be similar to the chromatic color of the object being viewed in the human eye's color perception mechanism. Based on the design of the emission peak wavelength of the LED chip and the phosphor to meet the aforementioned requirements, the emission peak wavelength of the light source with high chromatic color richness is ensured to be rich in the 430nm to 680nm band and the entire visible light range including this band. Correspondingly, when the light source with high chromatic color richness is used as an illumination source to illuminate an object of any chromatic color, the object can reflect light that is similar to its chromatic color. Therefore, it is beneficial to obtain a natural, realistic and comfortable visual experience when the light source with high chromatic color richness is used as an illumination source.

[0049] Furthermore, in the high chromatic richness light source of this invention, at least two emission peak wavelengths generated by the LED chip in the band of 680nm or greater and 780nm with a peak wavelength difference of 5nm or greater are preferably located in different bands of the following ten bands: band of 680nm or greater and less than 690nm, band of 690nm or greater and less than 700nm, band of 700nm or greater and less than 710nm, band of 710nm or greater and less than 720nm, band of 720nm or greater and less than 730nm, band of 730nm or greater and less than 740nm, band of 740nm or greater and less than 750nm, band of 750nm or greater and less than 760nm, band of 760nm or greater and less than 770nm, and band of 770nm or greater and less than 780nm. This ensures that the emission peak wavelength of the light source with high chromatic richness is rich in the 680nm to 780nm band, so as to meet the visual perception generated by the human eye's adaptation to sunlight, thereby obtaining a natural, realistic and comfortable visual experience when the light source with high chromatic richness is used as a display light source or lighting light source.

[0050] For example, in one embodiment of the present invention, taking the LED chip employing a single quantum well as an example, the high chromatic richness light source has four types of LED chips with emission peak wavelengths greater than or equal to 380 nm and less than 430 nm, four types of LED chips with emission peak wavelengths greater than or equal to 430 nm and less than 490 nm, four types of phosphors with emission peak wavelengths greater than or equal to 490 nm and less than 680 nm, and six types of LED chips with emission peak wavelengths greater than or equal to 680 nm and less than or equal to 780 nm.

[0051] Specifically, in this embodiment of the present invention, the emission peak wavelengths of the four types of LED chips with emission peak wavelengths greater than or equal to 380nm and less than 430nm are respectively located in the bands greater than or equal to 380nm and less than 390nm, greater than or equal to 390nm and less than 400nm, greater than or equal to 400nm and less than 410nm, and greater than or equal to 410nm and less than 420nm.

[0052] The four types of LED chips with emission peak wavelengths greater than or equal to 430nm and less than 490nm are respectively located in the bands of greater than or equal to 430nm and less than 440nm, greater than or equal to 440nm and less than 450nm, greater than or equal to 450nm and less than 460nm, and greater than or equal to 470nm and less than 480nm.

[0053] The six types of LED chips with emission peak wavelengths greater than or equal to 680nm and less than or equal to 780nm are respectively located in the bands of greater than or equal to 700nm and less than 710nm, greater than or equal to 710nm and less than 720nm, greater than or equal to 730nm and less than 740nm, greater than or equal to 740nm and less than 750nm, greater than or equal to 750nm and less than 760nm, and greater than or equal to 770nm and less than or equal to 780nm.

[0054] Specifically, in this embodiment of the present invention, the five phosphors with emission peak wavelengths greater than or equal to 490nm and less than 680nm are phosphors with emission peak wavelengths of 494nm, 495nm, 525nm, 535nm and 655nm respectively.

[0055] It is understood that when at least two phosphors have different emission peak wavelengths within a range of less than 5 nm, the emission peaks produced by these two phosphors are relatively broad, which is beneficial to ensuring the richness of the emission peak wavelengths of the light source with high chromatographic richness in the corresponding band.

[0056] Furthermore, in this embodiment of the present invention, among the four types of LED chips with emission peak wavelengths greater than or equal to 380nm and less than 430nm, the LED chip with an emission peak wavelength in the band greater than or equal to 380nm and less than 390nm has a higher power than any of the other three types of LED chips. This is beneficial to enhance the intensity of the emission peak wavelength of the high chromatic richness light source in the violet band, corresponding to ensuring the richness of the emission peak wavelength of the high chromatic richness light source in the 380nm to 430nm band while ensuring that the emission peak of the high chromatic richness light source has a suitable intensity distribution in this band.

[0057] Specifically, in this embodiment of the present invention, the ratio of the number of the four types of LED chips with emission peak wavelengths greater than or equal to 380nm and less than 430nm is 2.4:1.4:1.2:1, and the specific quantities are 12, 7, 6 and 5 respectively, in order of increasing emission peak wavelength.

[0058] Furthermore, in this embodiment of the present invention, among the six types of LED chips with emission peak wavelengths greater than or equal to 680nm and less than or equal to 780nm, the number of LED chips with emission peak wavelengths in the band greater than or equal to 770nm and less than or equal to 780nm is greater than the number of any one of the other five types of LED chips. This ensures the richness of the emission peak wavelength of the high chromatic richness light source in the 680nm to 780nm band while also ensuring that the emission peak of the high chromatic richness light source has a suitable intensity distribution in this band. This is beneficial to enhancing the visual perception generated by the human eye's adaptation to sunlight, thereby obtaining a natural, realistic, and comfortable visual experience when the high chromatic richness light source is used as a display light source or lighting light source.

[0059] Specifically, in this embodiment of the present invention, the ratio of the number of the six types of LED chips with emission peak wavelengths greater than or equal to 680nm and less than or equal to 780nm is 1.3:1.6:1.6:1:3:5, in order of increasing emission peak wavelength, with specific quantities of 13, 16, 16, 10, 30 and 50 respectively.

[0060] Furthermore, based on the corresponding color temperature design requirements, in this embodiment of the present invention, the ratio of the four types of LED chips with emission peak wavelengths greater than or equal to 430nm and less than 490nm is 1:1:1:1, specifically 84 chips in each category; the weight ratio of the four types of phosphors with emission peak wavelengths greater than or equal to 490nm and less than 680nm is 0.22:0.22:0.55:5.94:0.887. This satisfies the corresponding color temperature design requirements while ensuring the richness of the emission peak wavelength of the high chromaticity richness light source in the 430nm to 680nm band, and ensures that the emission peak of the high chromaticity richness light source has a suitable intensity distribution in this band.

[0061] Furthermore, in this embodiment of the present invention, based on the design of the LED chip and phosphor ratio that meets the aforementioned requirements, the high chromatic richness light source, when the power ratio of four types of LED chips with emission peak wavelengths greater than or equal to 380 nm and less than 430 nm, four types of LED chips with emission peak wavelengths greater than or equal to 430 nm and less than 490 nm, and six types of LED chips with emission peak wavelengths greater than or equal to 680 nm and less than or equal to 780 nm is 1:10.3:3.7, can form a color temperature corresponding to 5200 K. Figure 1 The emission spectrum of the light source with high chromatographic richness has a high chromatographic richness and a suitable intensity distribution throughout the visible light range. Therefore, when the light source with high chromatographic richness is used as an illumination source to illuminate an object with any chromatographic color, the object can reflect light that is similar to its chromatographic color, thereby obtaining a natural, realistic and comfortable visual experience when the light source with high chromatographic richness is used as an illumination source.

[0062] As a further example, in another embodiment of the present invention, based on the corresponding color temperature design requirements, the component ratio of the phosphor and the power ratio of the LED chips in different wavelength bands are adjusted relative to the high chromatic richness light source of the previous embodiment.

[0063] Specifically, in this embodiment of the present invention, the high chromatic richness light source further has at least two emission peak wavelengths generated by phosphors in the band greater than or equal to 780 nm and less than or equal to 850 nm, with a peak wavelength difference of greater than or equal to 5 nm between them, to further satisfy the non-visual perception caused by the adaptation of the human eye and skin to sunlight. Preferably, there is a maximum peak wavelength difference of greater than or equal to 30 nm between the at least two emission peak wavelengths generated by phosphors in the band greater than or equal to 780 nm and less than 850 nm, that is, the difference between the minimum emission peak wavelength and the maximum emission peak wavelength is greater than or equal to 30 nm. This helps to ensure the continuity of the emission peak wavelength of the high chromatic richness light source in the 780 nm to 850 nm band, thereby satisfying the non-visual perception caused by the adaptation of the human eye and skin to sunlight.

[0064] Specifically, in this embodiment of the present invention, the high chromatographic richness light source has at least two phosphors with emission peak wavelengths greater than or equal to 780 nm and less than or equal to 850 nm, so that in the band of greater than or equal to 780 nm and less than or equal to 850 nm, the phosphors generate at least two emission peak wavelengths with a peak wavelength difference between each other greater than or equal to 5 nm. Among the at least two phosphors with emission peak wavelengths greater than 780 nm and less than or equal to 850 nm, the maximum difference between the emission peak wavelengths of different phosphors is greater than or equal to 30 nm, that is, the difference between the emission peak wavelengths of the phosphor with the smallest emission peak wavelength and the phosphor with the largest emission peak wavelength is greater than or equal to 30 nm.

[0065] Furthermore, in this embodiment of the present invention, the high chromatographic richness light source also has at least one phosphor with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm, so that the addition of the phosphor in this band further enriches the richness of the emission peak wavelength of the high chromatographic richness light source in this band and enhances the intensity of the emission peak of the high chromatographic richness light source in this band.

[0066] Specifically, in this embodiment of the present invention, the high chromatographic richness light source has seven phosphors with emission peak wavelengths greater than or equal to 490 nm and less than 680 nm, one phosphor with emission peak wavelengths greater than or equal to 680 nm and less than or equal to 780 nm, and three phosphors with emission peak wavelengths greater than 780 nm and less than or equal to 850 nm.

[0067] The seven phosphors with emission peak wavelengths greater than or equal to 490 nm and less than 680 nm specifically refer to phosphors with emission peak wavelengths of 494 nm, 495 nm, 525 nm, 535 nm, 605 nm, 655 nm, and 675 nm. Based on the aforementioned method of distinguishing the types of phosphors, phosphors with emission peak wavelengths of 494 nm and 495 nm are considered the same phosphor in this description. The phosphor with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm specifically refers to a phosphor with an emission peak wavelength of 733 nm. The three phosphors with emission peak wavelengths greater than 780 nm and less than or equal to 850 nm specifically refer to phosphors with emission peak wavelengths of 795 nm, 821 nm, and 850 nm.

[0068] Furthermore, based on the corresponding color temperature design requirements, in this embodiment of the present invention, the specific weight ratio of the eleven phosphors, arranged in ascending order of emission peak wavelength, is: 0.27:0.097:2.86:14.28:2.4:0.67:0.84:4:2:1:1. The power ratio of the four types of LED chips with emission peak wavelengths greater than or equal to 380nm and less than 430nm, the four types of LED chips with emission peak wavelengths greater than or equal to 430nm and less than 490nm, and the six types of LED chips with emission peak wavelengths greater than or equal to 680nm and less than or equal to 780nm is 1:11.4:3. Correspondingly, the high chromatic richness light source can form a color temperature corresponding to... Figure 2 The emission spectrum of the light source with high chromatographic richness also has high richness and suitable intensity distribution in the entire visible light range. Therefore, when the light source with high chromatographic richness is used as an illumination source to illuminate an object with any chromatographic color, the object can reflect light that is similar to its chromatographic color, thereby obtaining a natural, realistic and comfortable visual experience when the light source with high chromatographic richness is used as an illumination source.

[0069] In particular, in another embodiment of this invention, the high chromatic richness light source can also, based on the mixing of the emission spectra of the high chromatic richness light sources in the foregoing two embodiments, obtain a color temperature corresponding to 4000K. Figure 3 The emission spectrum of the light source, corresponding to the high chromatographic richness, still has high richness and suitable intensity distribution throughout the visible light range.

[0070] In other words, in some embodiments of this invention, the high chromaticity richness light source has at least two emission modes based on the need for color temperature adjustment / selection. In at least one emission mode, the LED chip emitting light and the phosphor encapsulated within the LED chip satisfy the following conditions: having at least two types of LED chips with emission peak wavelengths greater than or equal to 380 nm and less than 430 nm; at least two types of LED chips with emission peak wavelengths greater than or equal to 430 nm and less than 490 nm; at least three types of phosphors with emission peak wavelengths greater than or equal to 490 nm and less than 680 nm; and at least two types of LED chips with emission peak wavelengths greater than or equal to 680 nm and less than or equal to 780 nm. For example, the number, emission peak wavelength, and phosphor weight ratio of the LED chip emitting light in at least one emission mode correspond to the high chromaticity richness light source in any of the first two embodiments of this invention.

[0071] It is worth mentioning that in the above embodiments of this utility model, the LED chip can adopt any of the conventional LED packaging forms such as 2835, 3014, 3030, 3528, 5050, COB and LED strip, and the packaging forms of each LED chip are not limited to the same.

[0072] Furthermore, the LED chip with an emission peak wavelength greater than or equal to 380nm and less than 430nm can be packaged individually or in combination with at least one of the aforementioned phosphors; similarly, the LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm can be packaged individually or in combination with at least one of the aforementioned phosphors, and this invention does not limit this. The LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm is packaged with the corresponding phosphor.

[0073] It is worth mentioning that the combination of at least two types of LED chips with emission peak wavelengths greater than or equal to 430nm and less than 490nm, at least three types of phosphors with emission peak wavelengths greater than or equal to 490nm and less than 680nm, and at least two types of LED chips with emission peak wavelengths greater than or equal to 680nm and less than or equal to 780nm is already able to form a state of white light based on the human eye's color perception mechanism. Independently packaged LED chips with emission peak wavelengths greater than or equal to 380nm and less than 430nm may cause users to perceive a purple light spot. Therefore, LED chips with emission peak wavelengths greater than or equal to 380nm and less than 430nm are preferably packaged in combination with at least one of the aforementioned phosphors. This helps to ensure the uniform distribution of purple light in the aforementioned "white light," corresponding to obtaining a balanced and stable visual perception of light color while improving the chromatic richness of the high chromatic richness light source.

[0074] Specifically, using LED chips as the packaging carriers for the LED wafers and the phosphors, the LED wafers with emission peak wavelengths greater than or equal to 430nm and less than 490nm are packaged with corresponding phosphors. The structural description of the LED wafers with emission peak wavelengths greater than or equal to 380nm and less than 430nm combined with at least one of the aforementioned phosphors is also provided. These three exemplary packaging methods for the high chromatic richness light source are described in... Figures 4A to 4C The two are respectively indicated.

[0075] like Figure 4A and Figure 4B As shown, a lamp bead encapsulating an LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm also encapsulates the corresponding phosphor. A lamp bead encapsulating an LED chip with an emission peak wavelength greater than or equal to 380nm and less than 430nm also encapsulates an LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm. In this way, the structure feature of combining an LED chip with an emission peak wavelength greater than or equal to 380nm and less than 430nm with at least one of the aforementioned phosphors is achieved by encapsulating the corresponding phosphor in combination with the LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm.

[0076] Specifically in the corresponding Figure 4AIn the exemplary packaging structure, the LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm is packaged separately. That is, the lamp bead packaged with the LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm does not contain the phosphor, nor does it contain the LED chip with an emission peak wavelength greater than or equal to 380nm and less than 430nm or the LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm. However, corresponding to... Figure 4B In the exemplary packaging structure, the LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm is packaged in the lamp bead, and the LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm is also packaged in the lamp bead, so as to realize the structural feature of the LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm combined with at least one of the aforementioned phosphors.

[0077] like Figure 4C As shown, a lamp bead encapsulating an LED chip with an emission peak wavelength greater than or equal to 430nm and less than 490nm also encapsulates the corresponding phosphor. A lamp bead encapsulating an LED chip with an emission peak wavelength greater than or equal to 380nm and less than 430nm also encapsulates an LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm and the corresponding phosphor. At least a portion of lamp beads encapsulate only LED chips with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm. In lamp beads encapsulating only LED chips with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm, the LED chip can be encapsulated individually or in combination with the corresponding phosphor. For example, corresponding to... Figure 4C In the case of LED chips packaged in the lamp beads, at least a portion of the lamp beads contain LED chips with emission peak wavelengths greater than or equal to 680nm and less than or equal to 780nm, and the LED chips are packaged in combination with the corresponding phosphors.

[0078] It is worth mentioning that, in Figures 4A to 4C The illustrations of the packaging structures shown, in which lamp beads serve as the packaging carriers for the LED chips and phosphors, are merely illustrative of the types of LED chips packaged in the lamp beads and whether they are combined with the corresponding phosphors. The number of corresponding LED chips packaged in each lamp bead shown in the figures does not constitute a limitation on this utility model.

[0079] It is understood that, using LED beads as the encapsulation carrier for the LED chip and the phosphor, since the number of LED chips that a single LED bead can encapsulate is limited, in order to meet the aforementioned requirements for the emission peak wavelength design of the LED chip and the phosphor, the lighting products corresponding to the high chromatic richness light source use different types of LED beads (with different emission spectra), and the number of LED beads of the same type is multiple. Therefore, to simplify the layout and power supply structure design of the LED beads in the lighting products corresponding to the high chromatic richness light source to ensure product production efficiency and consistency, while ensuring the uniform distribution of different light rays when the product emits light, this utility model further illustrates the layout and power supply structure of the LED beads in the lighting products corresponding to the high chromatic richness light source.

[0080] Specifically, please refer to the accompanying drawings in the specification of this utility model. Figures 5A to 5C As shown, the layout and power supply structure of different LED beads in the lighting products corresponding to the high chromatic richness light source are illustrated. Corresponding to the use of LED beads as the encapsulation carrier for the LED chip and the phosphor, the high chromatic richness light source includes a first series LED bead group formed by multiple LED beads connected in series, and a second series LED bead group formed by multiple LED beads connected in series. Each series LED bead group includes LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 380nm and less than 430nm. Among the LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 380nm and less than 430nm, LED chips having an emission peak wavelength greater than or equal to 430nm and less than 490nm are also encapsulated. Furthermore, among the LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 430nm and less than 490nm, the corresponding phosphor is also encapsulated. This helps to ensure the uniform distribution of violet light in the aforementioned white light, thereby improving the chromatic richness of the high chromatic richness light source while obtaining a balanced and stable visual perception of light color.

[0081] It is understood that, according to the actual process, in the LED beads encapsulated with the phosphor, the phosphor can be either a mixed phosphor with the same ratio, or the corresponding phosphor can be used according to the specific emission peak wavelength of the encapsulated LED chip. Both of these encapsulation methods of the phosphor fall within the aforementioned understanding of "encapsulated with the corresponding phosphor".

[0082] Specifically, the same LEDs in the same LED series group are connected in a staggered manner. Correspondingly, any two adjacent LEDs in the same LED series group are different LEDs along the series connection direction, so as to ensure the uniform distribution of different light rays when the product emits light.

[0083] It is worth mentioning that, when the luminaire product corresponding to the light source with high chromatic richness is a luminaire with a single color temperature, each of the series-connected LED bead groups also includes LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm, wherein the LED chips having an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm can correspond to... Figure 5A It can also be packaged separately, or correspond to Figure 5B The LED chip with an emission peak wavelength greater than or equal to 430 nm and less than 490 nm is combined and packaged. That is, in the corresponding Figure 5A In the lighting products, the lamp beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm do not contain the phosphor, nor do they contain LED chips with an emission peak wavelength greater than or equal to 380nm and less than 430nm or LED chips with an emission peak wavelength greater than or equal to 430nm and less than 490nm; corresponding to Figure 5B In the lighting products, the lamp beads encapsulated with the LED chip having an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm also encapsulate the LED chip having an emission peak wavelength greater than or equal to 430nm and less than 490nm.

[0084] Preferably, when the luminaire product corresponding to the high chromaticity richness light source is a luminaire with a single color temperature, the first series-connected LED group and the second series-connected LED group have the same LED combination and are preferably connected in parallel. This simplifies the LED layout and power supply structure design of the luminaire product corresponding to the high chromaticity richness light source, ensuring product production efficiency and consistency.

[0085] It is worth mentioning that when the luminaire product corresponding to the light source with high chromatic richness is a bicolor temperature luminaire with at least two emission modes, the light source with high chromatic richness corresponds to... Figure 5C It also includes at least one third series LED group, which is formed by connecting multiple LEDs in series. Each LED in the third series LED group is an LED chip with an emission peak wavelength greater than or equal to 680nm and less than or equal to 780nm that is individually packaged. The power supply of the third series LED group is set to be independently controllable relative to the first series LED group and the second series LED group. This allows the third series LED group to be shared in different light emission modes, which helps to reduce the number of LEDs required for multi-light emission mode design and correspondingly reduce product costs.

[0086] Furthermore, when the lighting product corresponding to the high chromatic richness light source is a dual-color temperature lighting fixture with at least two light emission modes, the first series group of LED beads and the second series group of LED beads can have the same combination of LED beads or different combinations of LED beads. Corresponding to the state where the first series group of LED beads and the second series group of LED beads have the same combination of LED beads, they can optionally be connected in parallel to be lit simultaneously in different light emission modes, and the switching setting for different light emission modes is formed by adjusting the luminous power of the third series group of LED beads based on independent control of the power supply. Corresponding to the state where the first series group of LED beads and the second series group of LED beads have different combinations of LED beads, the switching setting for different light emission modes can optionally be formed based on the setting where the first series group of LED beads and the second series group of LED beads are lit separately in different light emission modes, and the third series group of LED beads can be shared in different light emission modes based on independent control of the power supply.

[0087] In other words, when the first LED string group and the second LED string group have different LED combinations, based on the setting that the first LED string group and the second LED string group are lit up separately in different light emission modes, and the independent control of the power supply to the third LED string group, the first LED string group and the third LED string group are lit up in one light emission mode, and the second LED string group and the third LED string group are lit up in another light emission mode. In this way, a switching setting for different light emission modes is formed based on the setting that the first LED string group and the second LED string group are lit up separately in different light emission modes, and the third LED string group is shared in different light emission modes to reduce the number of LEDs required for multi-light emission mode design.

[0088] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A light source with high chromatographic richness, characterized in that, The high chromatic richness light source has at least two emission peak wavelengths generated by the LED chip in the band of ≥380nm and <430nm with a peak wavelength difference of ≥5nm; at least two emission peak wavelengths generated by the LED chip in the band of ≥430nm and <490nm with a peak wavelength difference of ≥5nm; at least three emission peak wavelengths generated by the phosphor in the band of ≥490nm and <680nm with a peak wavelength difference of ≥5nm; and at least two emission peak wavelengths generated by the LED chip in the band of ≥680nm and <780nm with a peak wavelength difference of ≥5nm. The light source, wherein the LED chip and the phosphor are encapsulated by LED beads, comprises a first series LED bead group formed by multiple LED beads connected in series, and a second series LED bead group formed by multiple LED beads connected in series. Each series LED bead group includes LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 380 nm and less than 430 nm. Among the LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 380 nm and less than 430 nm, LED chips having an emission peak wavelength greater than or equal to 430 nm and less than 490 nm are also encapsulated. Furthermore, among the LED beads encapsulated with LED chips having an emission peak wavelength greater than or equal to 430 nm and less than 490 nm, the corresponding phosphor is also encapsulated.

2. The high chromatographic richness light source according to claim 1, wherein the same lamp beads in the same lamp bead series group are connected in a staggered manner, and any two adjacent lamp beads in the same lamp bead series group along the series direction are different lamp beads.

3. The high chromatographic richness light source according to claim 1 or 2, wherein the first series-connected LED group and the second series-connected LED group have the same LED combination and are connected in parallel with each other.

4. The high chromatic richness light source according to claim 3, wherein the LED chip with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm is individually packaged.

5. The light source with high chromatic richness according to claim 3, wherein the lamp bead encapsulating the LED chip with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm also encapsulates the LED chip with an emission peak wavelength greater than or equal to 430 nm and less than 490 nm.

6. The high chromatic richness light source according to claim 1 or 2, wherein the high chromatic richness light source further comprises at least one third series lamp bead group formed by multiple lamp beads connected in series, wherein each lamp bead in the third series lamp bead group is a lamp bead formed by individually packaging the LED chip with an emission peak wavelength greater than or equal to 680 nm and less than or equal to 780 nm, wherein the power supply of the third series lamp bead group is configured to be independently controllable relative to the first series lamp bead group and the second series lamp bead group, so that the third series lamp bead group can be shared in different light emission modes.

7. The high chromatographic richness light source according to claim 6, wherein the first series-connected LED group and the second series-connected LED group have the same LED combination and are connected in parallel with each other.

8. The high chromatic richness light source according to claim 6, wherein the first series LED group and the second series LED group have different combinations of LEDs and are respectively lit up in different light emission modes.

9. The high chromatic richness light source according to claim 1 or 2, wherein at least two emission peak wavelengths generated by the LED chip in the band of 380 nm or more and less than 430 nm, with a peak wavelength difference of 5 nm or more, are located in different bands of the following five bands: the band of 380 nm or more and less than 390 nm, the band of 390 nm or more and less than 400 nm, the band of 400 nm or more and less than 410 nm, the band of 410 nm or more and less than 420 nm, and the band of 420 nm or more and less than 430 nm.

10. The high chromatic richness light source according to claim 9, wherein at least two emission peak wavelengths generated by the LED chip in the band of ≥430nm and <490nm, with a peak wavelength difference of ≥5nm, are located in different bands of the following six bands: ≥430nm and <440nm, ≥440nm and <450nm, ≥450nm and <460nm, ≥460nm and <470nm, ≥470nm and <480nm, and ≥480nm and <490nm.

11. The light source with high chromatographic richness according to claim 10, wherein the maximum difference between at least three emission peak wavelengths generated by the phosphor in the band of 490 nm or more and less than 680 nm, wherein the peak wavelength difference between each other is greater than or equal to 5 nm, is greater than or equal to 50 nm, that is, the difference between the minimum emission peak wavelength and the maximum emission peak wavelength is greater than or equal to 50 nm.

12. The high chromatic richness light source according to claim 11, wherein at least two emission peak wavelengths generated by the LED chip in the band of 680 nm or greater and 780 nm, with a peak wavelength difference of 5 nm or greater, are located in different bands of the following ten bands: band of 680 nm or greater and less than 690 nm, band of 690 nm or greater and less than 700 nm, band of 700 nm or greater and less than 710 nm, band of 710 nm or greater and less than 720 nm, band of 720 nm or greater and less than 730 nm, band of 730 nm or greater and less than 740 nm, band of 740 nm or greater and less than 750 nm, band of 750 nm or greater and less than 760 nm, band of 760 nm or greater and less than 770 nm, and band of 770 nm or greater and less than 780 nm.

13. The high chromatographic richness light source according to claim 12, wherein the high chromatographic richness light source further has at least two emission peak wavelengths generated by phosphors in a band greater than or equal to 780 nm and less than or equal to 850 nm, with a peak wavelength difference between each other greater than or equal to 5 nm.

Images