Bionic night light spectrum LED light source and preparation method thereof

Abstract

The invention relates to the technical field of LEDs, in particular to a bionic night-moonlight spectrum LED light source and a preparation method thereof.The bionic night-moonlight spectrum LED light source comprises a plurality of LED wafers, a support and fluorescent glue, the support is provided with a bowl cup, a positive electrode and a negative electrode, the LED wafers are all arranged in the bowl cup, and the fluorescent glue is arranged in the bowl cup; the LED wafers are connected with the positive electrode and the negative electrode through gold wire bonding; the relative spectral power of the bionic night light spectrum LED light source is continuous at 350-1650nm. The LED light source formed by the bionic night light spectrum LED light source can realize continuous relative spectrum power at 350-1650 nm, and the spectrum infrared content at 700-1650 nm is gt; and moreover, the photobiological risk can be avoided, the light pollution phenomenon is completely eradicated, and the safety of human eyes is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of LEDs, and in particular to a bionic night moonlight spectrum LED light source and a preparation method thereof. Background Art

[0002] At present, human nighttime operations are increasingly valued and widely used. Especially with the application of information technology and advanced night vision equipment, the content, scale, and methods of nighttime operations have changed significantly. This requires us to consider the night vision capabilities of the infrared spectrum while deeply restoring the moonlight capabilities at night. Based on the above, it is necessary to develop the light spectrum for nighttime operations in order to achieve a light source that is specially suitable for nighttime use, conforms to the spectrum similar to the moonlight spectrum at night, and improves the nighttime operation capabilities. Summary of the invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a bionic night moonlight spectrum LED light source and a preparation method thereof.

[0004] The present invention adopts the following technical solutions to solve the above technical problems: a bionic night moonlight spectrum LED light source, comprising a plurality of LED chips, a bracket and fluorescent glue, the bracket having a bowl and positive and negative electrodes, the plurality of LED chips are arranged in the bowl, and each LED chip is connected to the positive and negative electrodes by wire bonding;

[0005] The fluorescent glue is coated on each of the LED chips, and the plurality of LED chips include a first LED chip with a peak wavelength of 360-370nm, a second LED chip with a peak wavelength of 400-410nm, a third LED chip with a main wavelength of 440-445nm, a fourth LED chip with a main wavelength of 450-465nm, a fifth LED chip with a main wavelength of 460-470nm, and a sixth LED chip with a main wavelength of 475-485nm;

[0006] The first LED chip adopts a horizontal double-electrode structure chip or a vertical single-electrode structure chip, and the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip all adopt a horizontal double-electrode structure chip;

[0007] The fluorescent glue is made of 4000K fluorescent glue solution, and the mass ratio of the components of the 4000K fluorescent glue solution is glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared phosphor with an emission peak wavelength of 725-735nm: infrared phosphor with an emission peak wavelength of 830-850nm: infrared phosphor with an emission peak wavelength of 1010-1040nm = 11: (2-3): (7-8): (0.4-0.5): (0.35-0.45): (2.1-3.1): (3.1-4.1): (2.1-3.1);

[0008] The bionic night moonlight spectrum LED light source has a continuous relative spectrum power at 350-1650nm, and a spectrum infrared content of >60% at 700-1650nm.

[0009] Optionally, the spectral content of the bionic night moonlight spectrum LED light source is: Фe (350-399nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-780nm): Фe (781-1000nm): Фe (1001-1650nm) = (1.6-2.1%): (8.3%-9.3%): (12.7%-13.7%): (14.8%-15.8%): (15.3%-16.3%): (33%-34%): (11%-12%).

[0010] Optionally, the spectral height of the bionic night moonlight spectrum LED light source is:

[0011] 350-600nm<0.6;

[0012] 600-900nm>0.5;

[0013] 900-1000nm>0.3 and 1000-1060nm highest peak>0.8;

[0014] There is spectral energy at 1550-1650nm;

[0015] There are multiple peaks between 900 and 1100 nm;

[0016] The peak wavelength is between 750-850nm or 1000-1060nm.

[0017] Optionally, the blue powder with an emission wavelength of 450-470 nm is Sr3 LnM(PO4)3F:Eu 2+Components, half-wave width is 30-50nm, excitation wavelength is 350-450nm;

[0018] The green powder with an emission wavelength of 535-545 nm is Lu3Al5O 12 :Ce 3+ component, half-wave width is 95-105nm;

[0019] The red powder with an emission wavelength of 630-640nm is composed of CaAlSiN3:Eu and has a half-wave width of 60-80nm;

[0020] The red powder with an emission wavelength of 675-685nm is composed of CaAlSiN3:Eu and has a half-wave width of 95-105nm;

[0021] The infrared phosphor with an emission wavelength of 725-735 nm is Ga4GeO8:Cr 3+ Component, half-wave width is 130-160nm;

[0022] The infrared phosphor with an emission wavelength of 830-850nm is Ga4GeO8:Cr 3+ Component, half-wave width is 130-160nm;

[0023] The infrared phosphor with an emission wavelength of 1010-1040 nm is Ga4GeO8:Cr 3+ The half-wave width is 30-50nm and there are multiple peaks.

[0024] Optionally, the number ratio of the first LED chip: the second LED chip: the third LED chip: the fourth LED chip: the fifth LED chip: the sixth LED chip is 1:

[0025] (1-3):(1-3):(1-3):(1-3):(1-3).

[0026] Optionally, the bare crystal spectrum formed by the combination of the used wafers satisfies the peak height energy ratio of Фe (360-370nm): Фe (400-410nm): Фe (440-445nm): Фe (450-455nm): Фe (460-470nm): Фe (475-485nm), which is (0.2-0.4): (0.3-0.5): (0.8-1.0): (0.8-1.0): (0.4-0.6): (0.3-0.5).

[0027] Optionally, the first LED chip is die-bonded with silver glue, and the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip are die-bonded with insulating glue.

[0028] The embodiment of the present invention also provides a method for preparing the above-mentioned bionic night moonlight spectrum LED light source, which comprises the following steps:

[0029] S100: placing the plurality of LED chips in the bowl, and fixing them on the bracket by using an insulating glue or silver glue with a die bonding machine, and baking them in an oven at 150-160° C. for 2 h±10 min after the die bonding, so that the plurality of LED chips are completely fixed in the bowl;

[0030] S200: Connecting the plurality of LED chips to the positive and negative electrodes by wire bonding using a wire bonding machine;

[0031] S300: preparing a 4000K special fluorescent glue solution to form the fluorescent glue, wherein the components of the 4000K fluorescent glue solution are mixed in the following mass ratios: glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared fluorescent powder with an emission peak wavelength of 725-735nm: infrared fluorescent powder with an emission peak wavelength of 830-850nm: infrared fluorescent powder with an emission peak wavelength of 1010-1040nm;

[0032] S400: Pour the prepared 4000K fluorescent glue solution into the glue barrel of the glue dispensing machine. After the glue and bubbles are discharged, dispense the pink fluorescent glue solution into the bowl according to the color parameter requirements. After the dispensing is completed, bake at 80℃ / 0.5H+160℃ / 4H;

[0033] S500: After the LED is threshed after baking, it is split according to the given color parameters using a spectrophotometer, so that the light color quality formed in the bowl meets the S / P ratio and M / P ratio that are basically the same as the sunlight with the same color temperature, the color temperature meets the specified chromaticity 403 standard coordinates, the chromaticity coordinates meet the 3-order color tolerance chromaticity standard, the SSI coefficient of similarity with the same color temperature solar spectrum 4000K is >93%, and the blue light hazard efficiency K B，V Compared with the blue light hazard efficiency of sunlight with the same color temperature K B，V Low, meets the blue light exemption RG0 standard.

[0034] Compared with the prior art, the bionic night moonlight spectrum LED light source and the preparation method thereof of the present invention have the following beneficial effects:

[0035] 1. The LED light source can achieve continuous relative spectral power in the range of 350-1650nm, avoid photobiological risks, eliminate light pollution, and ensure eye safety;

[0036] 2. S / Pratio (ratio of dark to bright vision) is basically the same as sunlight with the same color temperature of 4000K, which is conducive to relaxing the eyes, creating a comfortable and healthy light environment and allowing objects to be seen clearly and brightly;

[0037] 3. The M / P ratio (non-photopic brightness ratio) is basically the same as sunlight with the same color temperature of 4000K, which inhibits the secretion of melatonin and is conducive to learning;

[0038] 4. High TLCI-2012 parameters, light shines on books or fonts, the restoration is clearer, and the human body or equipment can be seen more clearly, TLCI-2012, 99;

[0039] 5. Melanopic equivalent daylight efficiency MDER is the same as sunlight with the same color temperature of 4000K, which is conducive to eye relaxation and clearer vision;

[0040] 6.COI acid glycoside index ≤3.3, which can meet the medical lighting standards;

[0041] 7.GAI-BB (same color temperature sunlight gamut area index)>100, the same color temperature sunlight color gamut representation is high;

[0042] 8. CSD (cone sensitivity difference)>0.65, higher than the same color temperature 4000K sun, the eyes can be easily adjusted, eye protection and health;

[0043] 9. Full spectrum index FSI <1.0, full spectrum color index FSCI>95, high spectrum saturation;

[0044] 10. Similarity with sunlight spectrum SSI (350-830nm)>93%, high light color similarity, enjoy sunshine bathing;

[0045] 11.730nm infrared height>0.8, which is conducive to the decomposition of large molecular water into small molecular water, which is eye-protecting and healthy;

[0046] 12.700-1650nm spectrum infrared content>60%, helpful for infrared identification and special purpose lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of a bionic night moonlight spectrum LED light source provided by an embodiment of the present invention.

[0048] Figure 2 This is a bare crystal spectrum diagram of the bionic night moonlight spectrum LED light source provided by an embodiment of the present invention.

[0049] Figure 3 This is a spectrum diagram of the bionic night moonlight spectrum LED light source 350-1650nm provided by an embodiment of the present invention.

[0050] Figure 4 It is a TLCI-2012 parameter diagram of the bionic night moonlight spectrum LED light source provided by an embodiment of the present invention.

[0051] Figure 5 This is a comparison chart of the similarity SSI (350-830nm) between the bionic night moonlight spectrum LED light source and the sunlight spectrum provided by an embodiment of the present invention.

[0052] Figure 6 This is a binning diagram of the bionic night moonlight spectrum LED light source provided by an embodiment of the present invention.

[0053] Figure 7 This is a spectrum diagram of the bionic night moonlight spectrum LED light source 380-780nm provided by an embodiment of the present invention.

[0054] Figure 8 This is a spectrum diagram of the bionic night moonlight spectrum LED light source 350-1000nm provided by an embodiment of the present invention.

[0055] Fig. 9 This is a comparison chart between the bionic night moonlight spectrum LED light source provided by an embodiment of the present invention and the 4000K sunlight spectrum.

[0056] Fig.10 This is a spectrum test report chart of the bionic night moonlight spectrum LED light source 350-1000nm provided by an embodiment of the present invention.

[0057] Fig.11 This is a spectrum test report chart of the bionic night moonlight spectrum LED light source 350-1650nm provided by an embodiment of the present invention.

[0058] Reference numerals:

[0059] 10—bracket 11—fluorescent glue. DETAILED DESCRIPTION

[0060] The following is combined with Figures 1 to 11 The technical solution of the present invention is further described in detail. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. Although this specification is described according to the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole. The various embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0061] It should be noted that the blue light hazard efficiency K B，V To calculate, that is, the blue light hazard weighted radiance L BThe ratio of the corresponding photometric value is calculated as:

[0062]

[0063] Among them, K m =683lm / W, V(λ) is the spectral luminous efficiency (or visibility function), and B(λ) is the blue light hazard weighting function. K B，V Characterizes the relative amount of blue light components in visible radiation. When the brightness of lighting products is the same, K B，V The higher it is, the more likely the light source is to harm the retina.

[0064] like Figure 1 As shown, the embodiment of the present invention provides a bionic night moonlight spectrum LED light source, which includes a plurality of LED chips, a bracket 10 and a fluorescent glue 11, wherein the bracket 10 has a bowl and a positive and negative electrode, and the plurality of LED chips are arranged in the bowl, and each LED chip is connected to the positive and negative electrodes by bonding with a lead wire (such as a gold wire, a silver wire or an alloy wire);

[0065] The fluorescent glue 11 is coated on each of the LED chips, and the multiple LED chips include a first LED chip with a peak wavelength of 360-370nm, a second LED chip with a peak wavelength of 400-410nm, a third LED chip with a main wavelength of 440-445nm, a fourth LED chip with a main wavelength of 450-465nm, a fifth LED chip with a main wavelength of 460-470nm, and a sixth LED chip with a main wavelength of 475-485nm;

[0066] Wherein, the first LED chip adopts a horizontal double-electrode structure chip or a vertical single-electrode structure chip, and the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip all adopt a horizontal double-electrode structure chip;

[0067] The fluorescent glue 11 is made of 4000K fluorescent glue solution, and the mass ratio of the components of the 4000K fluorescent glue solution is glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared fluorescent powder with an emission peak wavelength of 725-735nm: infrared fluorescent powder with an emission peak wavelength of 830-850nm: infrared fluorescent powder with an emission peak wavelength of 1010-1040nm = 11: (2-3): (7-8): (0.4-0.5): (0.35-0.45): (2.1-3.1): (3.1-4.1): (2.1-3. 1); Specifically, the mass ratio of glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared phosphor with an emission peak wavelength of 725-735nm: infrared phosphor with an emission peak wavelength of 830-850nm: infrared phosphor with an emission peak wavelength of 1010-1040nm can be 11:2:7:0.4:0.35:2.1:3.1:2.1 or 11:3:8:0.5:0.45:-3.1:4.1:3.1 or 11:2.5:7.5:0.45):0.4:2.6:3.6:2.6.

[0068] The bionic night moonlight spectrum LED light source of the embodiment of the present invention has a continuous relative spectral power of 350-1650nm. In this way, the LED light source formed can achieve continuous relative spectral power at 350-1650nm, and can avoid the existence of photobiological risks, eliminate light pollution, and ensure the safety of human eyes. S / Pratio (dark-light visual brightness ratio) is basically the same as the sunlight with the same color temperature of 4000K, which is conducive to relaxing the eyes' viewing angle, creating a comfortable and healthy light environment and allowing objects to be seen clearly and brightly. M / Pratio (non-bright visual brightness ratio) is basically the same as the sunlight with the same color temperature of 4000K, which inhibits the secretion of melatonin and is conducive to learning.

[0069] In one embodiment provided by the present invention, the spectral content of the bionic night moonlight spectrum LED light source is: Фe (350-399nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-780nm): Фe (781-1000nm): Фe (1001-1650nm) = (1.6-2.1%): (8.3%-9.3%): (12.7%-13.7%): (14.8%-15.8%): (15.3%-16.3%): (33%-34%): (11%-12%). Specifically, Фe (350-399nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-780nm): Фe (781-1000nm): Фe (1001-1650nm) can be: 1.6%: 8.3%: 12.7%: 14.8%: 15.3%: 33%: 11% or 2.1%: 9.3%: 13.7%: 15.8%: 16.3%: 34%: 12% or 1.85%: 8.8%): 13.2%: 15.3%: 15.8%: 33.5%: 11.5%.

[0070] Combination Figure 3 , 8 As can be seen from the following Table 1, the spectral content of the bionic night moonlight spectrum LED light source of the embodiment of the present invention.

[0071]

[0072] It can be seen that the infrared content of the 700-1650nm spectrum of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is greater than 60%, which is helpful for infrared recognition and other special-purpose lighting.

[0073] In one embodiment provided by the present invention, the spectral height of the bionic night moonlight spectrum LED light source is:

[0074] 350-600nm<0.6;

[0075] 600-900nm>0.5;

[0076] 900-1000nm>0.3 and 1000-1060nm highest peak>0.8;

[0077] There is spectral energy at 1550-1650nm;

[0078] There are multiple peaks between 900 and 1100 nm;

[0079] The peak wavelength is between 750-850nm or 1000-1060nm.

[0080] In one embodiment provided by the present invention, the green powder with an emission wavelength of 450-470 nm is Sr3LnM(PO4)3F:Eu 2+ The component has a half-wave width of 30-50nm, and the half-wave width can be 30nm, 40nm or 50nm. The excitation wavelength is 350-450nm; the excitation wavelength can be 350nm, 400nm or 500nm.

[0081] The green powder with an emission wavelength of 535-545 nm is Lu3Al5O 12 :Ce 3+ Component, half-wave width is 95-105nm; the half-wave width can be 95nm, 100nm or 105nm.

[0082] The red powder with an emission wavelength of 630-640nm is composed of CaAlSiN3:Eu, and the half-wave width is 60-80nm; the half-wave width can be 60nm, 70nm or 80nm.

[0083] The red powder with an emission wavelength of 675-685nm is composed of CaAlSiN3:Eu, and the half-wave width is 95-105nm; the half-wave width can be 95nm, 100nm or 105nm.

[0084] The infrared phosphor with an emission wavelength of 725-735 nm is Ga4GeO8:Cr 3+ component, half-wave width is 130-160nm; the half-wave width can be 130nm, 140nm, 150nm or 160nm.

[0085] The infrared phosphor with an emission wavelength of 830-850nm is Ga4GeO8:Cr 3+ component, half-wave width is 130-160nm; the half-wave width can be 130nm, 140nm, 150nm or 160nm.

[0086] The infrared phosphor with an emission wavelength of 1010-1040 nm is Ga4GeO8:Cr 3+ The component has a half-wave width of 30-50nm, the half-wave width can be 30nm, 40nm or 50nm, and there are multiple peaks.

[0087] In one embodiment of the present invention, the number ratio of the first LED chip: the second LED chip: the third LED chip: the fourth LED chip: the fifth LED chip: the sixth LED chip is 1:(1-3):(1-3):(1-3):(1-3). Specifically, the number ratio of the first LED chip: the second LED chip: the third LED chip: the fourth LED chip: the fifth LED chip: the sixth LED chip can be 1:1:1:1:1:1 or 1:2:3:1:2:3 or 1:3:2:3:2:1 or 1:3:3:3:3:3 or 1:2:2:2:2:2.

[0088] like Figure 2 As shown, in the bionic moonlight spectrum LED light source of the embodiment of the present invention, the bare crystal spectrum composed of the chips used satisfies the peak height energy ratio of Фe (360-370nm): Фe (400-410nm): Фe (440-445nm): Фe (450-455nm): Фe (460-470nm): Фe (475-485nm) of (0.2-0.4): (0.3-0.5): (0.8-1.0): (0.8-1.0): (0.4-0.6): (0.3-0.5). The specific ratio can be 0.2:0.3:0.8:0.8:0.4:0.3 or 0.4:0.5:1.0:1.0:0.6:0.5 or 0.3:0.4:0.9:0.9:0.5:0.4.

[0089] In an embodiment provided by the present invention, the first LED chip is bonded with silver glue, so that the first LED chip can be conductive, and the remaining second LED chip, third LED chip, fourth LED chip, fifth LED chip and sixth LED chip are bonded with insulating glue.

[0090] The embodiment of the present invention also provides a method for preparing a bionic night moonlight spectrum LED light source, comprising the following steps:

[0091] S100: The plurality of LED chips are arranged in the bowl, and are fixed on the bracket 10 by a die bonding machine through insulating glue or silver glue. After the die bonding is completed, the plurality of LED chips are baked in an oven at a temperature of 150-160° C. for 2 h±10 min, so that the plurality of LED chips are completely fixed in the bowl;

[0092] S200: Using a wire bonding machine to bond the plurality of LED chips to the positive and negative electrodes using gold wires (silver wires or alloy wires);

[0093] S300: preparing a 4000K special fluorescent glue solution to form the fluorescent glue 11, wherein the mass ratio of the components of the 4000K fluorescent glue solution is glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared fluorescent powder with an emission peak wavelength of 725-735nm: infrared fluorescent powder with an emission peak wavelength of 830-850nm: infrared fluorescent powder with an emission peak wavelength of 1010-1040nm, which are mixed according to the mass ratio;

[0094] S400: Pour the prepared 4000K fluorescent glue solution into the glue barrel of the glue dispensing machine. After the glue and bubbles are discharged, dispense the pink fluorescent glue solution into the bowl according to the color parameter requirements. After the dispensing is completed, bake at 80℃ / 0.5H+160℃ / 4H;

[0095] S500: After the LED is threshed after baking, it is split according to the given color parameters using a spectrophotometer, so that the light color quality formed in the bowl meets the S / P ratio and M / P ratio that are basically the same as the sunlight with the same color temperature, the color temperature meets the specified chromaticity 403 standard coordinates, the chromaticity coordinates meet the 3-order color tolerance chromaticity standard, the SSI coefficient of similarity with the same color temperature solar spectrum 4000K is >93%, and the blue light hazard efficiency K B，V Compared with the blue light hazard efficiency of sunlight with the same color temperature K B，V Low, meets the blue light exemption RG0 standard (see Fig. 9 ).

[0096] The bionic night moonlight spectrum LED light source prepared by the preparation method of the bionic night moonlight spectrum LED light source of the embodiment of the present invention has a continuous relative spectral power at 350-1650nm. In this way, the LED light source formed can achieve continuous relative spectral power at 350-1650nm, and can avoid the existence of photobiological risks, eliminate light pollution, and ensure the safety of human eyes. The S / P ratio (dark-light visual brightness ratio) is basically the same as the sunlight with the same color temperature of 4000K, which is conducive to relaxing the eyes' viewing angle, creating a comfortable and healthy light environment and allowing objects to be seen clearly and brightly. The M / P ratio (non-bright visual brightness ratio) is basically the same as the sunlight with the same color temperature of 4000K, which inhibits the secretion of melatonin and is conducive to learning.

[0097] Combination Figure 3 It can be seen that the bionic night moonlight spectrum LED light source of the embodiment of the present invention can achieve continuous relative spectral power at 350-1650nm, avoid photobiological risks, eliminate light pollution, and ensure human eye safety.

[0098] From Table 2 below, it can be seen that the S / P ratio (dark-light visual brightness ratio) of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is basically the same as the sunlight with the same color temperature of 4000K, which is conducive to relaxing the eyes' viewing angle, creating a comfortable and healthy light environment and allowing objects to be seen clearly and brightly.

[0099] The present invention S / Pratio 4000K Sunlight S / Pratio 1.89 1.88 .

[0100] From Table 3 below, it can be seen that the M / P ratio (non-photopic brightness ratio) of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is substantially the same as that of sunlight with the same color temperature of 4000K, which inhibits the secretion of melatonin and is beneficial to learning.

[0101] The present invention M / Pratio 4000K Sunlight M / Pratio 0.788 0.785 .

[0102] Combination Figure 4 It can be seen that the bionic night moonlight spectrum LED light source of the embodiment of the present invention has a high TLCI-2012 parameter. When the light is shone on a book or font, the restoration is clearer, and the human body or equipment can see it more clearly, TLCI-2012, 99.

[0103] From Table 4 below, it can be seen that the melanopsin equivalent daylight efficiency MDER of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is the same as the sunlight with the same color temperature of 4000K, which is conducive to eye relaxation and clearer vision.

[0104] The present invention MDER 4000K Sunlight MDER 0.708 0.705 .

[0105] Combined with Table 5 below, it can be seen that the CSD (cone cell sensitivity difference) of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is greater than 0.65, which is higher than the same color temperature 4000K sun. The eyes can be easily moved, which is eye protection and healthy.

[0106] The present invention CSD 4000K Sunlight CSD 0.6761 0.76596

[0107] Combination Figure 5 It can be seen that the bionic moonlight spectrum LED light source of the embodiment of the present invention has a similarity SSI (350-830nm) of >93% with the sunlight spectrum, and has high light color similarity, allowing you to enjoy a sun bath.

[0108] Combination Figure 7 It can be seen that the 730nm infrared height of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is >0.8, which is conducive to the decomposition of large molecular water into small molecular water, which is eye protection and health.

[0109] Furthermore, the test data of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is shown in the following Table 6:

[0110]

[0111]

[0112] From Table 6 above and combined Figures 10-11 According to the test report, the light color parameters of the bionic night moonlight spectrum LED light source of this embodiment meet the following requirements: 1. Ra>95, R1-15>90; 2. CQS (color quality index)>95; 3. TM-30-20, Rg>98, Rf>95, Rf, skin>95; 4. TV lighting index TLCI-2012>99; 5. COI acid glycoside index ≤3.3, which can meet the medical lighting standard; 6. Full spectrum index FSI<1, full spectrum color index FSCI>95, high spectrum saturation, meeting the full spectrum lighting index requirements; 7. GAI-BB (same color temperature sunlight color gamut area index)>100, high degree of representation of the same sunlight color gamut; 8. CSD (cone cell sensitivity difference)>0.65, which is as high as 4000K sun, and the eyes can be easily mobilized, which is eye protection and healthy.

[0113] Furthermore, combined with Figure 6 As shown in Table 7 below, the spectral standard of the bionic night moonlight spectrum LED light source of the embodiment of the present invention is:

[0114]

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bionic night moonlight spectrum LED light source, characterized in that: It includes a plurality of LED chips, a bracket and fluorescent glue, wherein the bracket has a bowl and positive and negative electrodes, and the plurality of LED chips are arranged in the bowl, and each LED chip is connected to the positive and negative electrodes by wire bonding; The fluorescent glue is coated on each of the LED chips, and the plurality of LED chips include a first LED chip with a peak wavelength of 360-370nm, a second LED chip with a peak wavelength of 400-410nm, a third LED chip with a main wavelength of 440-445nm, a fourth LED chip with a main wavelength of 450-465nm, a fifth LED chip with a main wavelength of 460-470nm, and a sixth LED chip with a main wavelength of 475-485nm; The first LED chip adopts a horizontal double-electrode structure chip or a vertical single-electrode structure chip, and the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip all adopt a horizontal double-electrode structure chip; The fluorescent glue is made of 4000K fluorescent glue solution, and the mass ratio of the components of the 4000K fluorescent glue solution is glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared phosphor with an emission peak wavelength of 725-735nm: infrared phosphor with an emission peak wavelength of 830-850nm: infrared phosphor with an emission peak wavelength of 1010-1040nm = 11: (2-3): (7-8): (0.4-0.5): (0.35-0.45): (2.1-3.1): (3.1-4.1): (2.1-3.1); The bionic night moonlight spectrum LED light source has a continuous relative spectrum power at 350-1650nm, and a spectrum infrared content of >60% at 700-1650nm.

2. The bionic night moonlight spectrum LED light source according to claim 1, characterized in that: The spectral content of the bionic night moonlight spectrum LED light source is: Фe (350-399nm): Фe (400-499nm): Фe (500-599nm): Фe (600-699nm): Фe (700-780nm): Фe (781-1000nm): Фe (1001-1650nm) = (1.6-2.1%): (8.3%-9.3%): (12.7%-13.7%): (14.8%-15.8%): (15.3%-16.3%): (33%-34%): (11%-12%).

3. The bionic night moonlight spectrum LED light source according to claim 1, characterized in that: The spectral height of the bionic night moonlight spectrum LED light source is: 350-600nm<0.6; 600-900nm>0.5; 900-1000nm>0.3 and 1000-1060nm highest peak>0.8; There is spectral energy at 1550-1650nm; There are multiple peaks between 900 and 1100 nm; The peak wavelength is between 750-850nm or 1000-1060nm.

4. The bionic night moonlight spectrum LED light source according to claim 1, characterized in that: The blue powder with an emission wavelength of 450-470 nm is Sr3 LnM(PO4)3F∶Eu 2+ Components, half-wave width is 30-50nm, excitation wavelength is 350-450nm; The green powder with an emission wavelength of 535-545 nm is Lu3Al5O 12 :Ce 3+ component, half-wave width is 95-105nm; The red powder with an emission wavelength of 630-640nm is composed of CaAlSiN3:Eu and has a half-wave width of 60-80nm; The red powder with an emission wavelength of 675-685nm is composed of CaAlSiN3:Eu and has a half-wave width of 95-105nm; The infrared phosphor with an emission wavelength of 725-735 nm is Ga4GeO8:Cr 3+ Component, half-wave width is 130-160nm; The infrared phosphor with an emission wavelength of 830-850nm is Ga4GeO8:Cr 3+ Component, half-wave width is 130-160nm; The infrared phosphor with an emission wavelength of 1010-1040 nm is Ga4GeO8:Cr 3+ The half-wave width is 30-50nm and there are multiple peaks.

5. The bionic night moonlight spectrum LED light source according to claim 1, characterized in that: The quantity ratio of the first LED chip: the second LED chip: the third LED chip: the fourth LED chip: the fifth LED chip: the sixth LED chip is 1:(1-3):(1-3):(1-3):(1-3):(1-3).

6. The bionic night moonlight spectrum LED light source according to claim 1, characterized in that: The bare crystal spectrum composed of the wafers used satisfies the peak height energy ratio of Фe (360-370nm): Фe (400-410nm): Фe (440-445nm): Фe (450-455nm): Фe (460-470nm): Фe (475-485nm), which is (0.2-0.4): (0.3-0.5): (0.8-1.0): (0.8-1.0): (0.4-0.6): (0.3-0.5).

7. The bionic night moonlight spectrum LED light source according to claim 1, characterized in that: The first LED chip is bonded with silver glue, and the second LED chip, the third LED chip, the fourth LED chip, the fifth LED chip and the sixth LED chip are bonded with insulating glue.

8. A method for preparing a bionic night moonlight spectrum LED light source according to claims 1 to 7, characterized in that: The following steps are involved: S100: placing the plurality of LED chips in the bowl, and fixing them on the bracket by using an insulating glue or silver glue with a die bonding machine, and baking them in an oven at 150-160° C. for 2 h±10 min after the die bonding, so that the plurality of LED chips are completely fixed in the bowl; S200: Connecting the plurality of LED chips to the positive and negative electrodes by wire bonding using a wire bonding machine; S300: preparing a 4000K special fluorescent glue solution to form the fluorescent glue, wherein the components of the 4000K fluorescent glue solution are mixed in the following mass ratios: glue: blue powder with an emission peak wavelength of 450-470nm: green powder with an emission peak wavelength of 535-545nm: red powder with an emission peak wavelength of 630-640nm: red powder with an emission peak wavelength of 675-685nm: infrared fluorescent powder with an emission peak wavelength of 725-735nm: infrared fluorescent powder with an emission peak wavelength of 830-850nm: infrared fluorescent powder with an emission peak wavelength of 1010-1040nm; S400: Pour the prepared 4000K fluorescent glue solution into the glue barrel of the glue dispensing machine. After the glue and bubbles are discharged, dispense the pink fluorescent glue solution into the bowl according to the color parameter requirements. After the dispensing is completed, bake at 80℃ / 0.5H+160℃ / 4H; S500: After the LED is threshed after baking, it is split according to the given color parameters using a spectrophotometer, so that the light color quality formed in the bowl meets the S / P ratio and M / P ratio that are basically the same as the sunlight with the same color temperature, the color temperature meets the specified chromaticity 403 standard coordinates, the chromaticity coordinates meet the 3-order color tolerance chromaticity standard, the SSI coefficient of similarity with the same color temperature solar spectrum 4000K is >93%, and the blue light hazard efficiency K B，V Compared with the blue light hazard efficiency of sunlight with the same color temperature K B，V Low, meets the blue light exemption RG0 standard.

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