Method for calibrating white light chromaticity coordinates of high-precision spectrometers with different LEDs

Abstract

The present invention relates to the field of LED technology, and particularly to a method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers. This method utilizes the basic characteristic that the light-emitting principle of white light LEDs must pass through the blue light point (0.1544, 0.0297), that is, for the same white light LED, the chromaticity coordinates measured by different testers are connected to the blue light point (0.1544, 0.0297) to form a straight line. By using the calibration method of the slope deviation ΔK of two straight lines and the chromaticity coordinate Δx, the color deviation is reduced to ensure the unity of the calibration effect.

Description

Technical Field

[0001] The invention relates to the technical field of LEDs, and in particular to a method for calibrating white light chromaticity coordinates of high-precision spectrometers with different LEDs. Background Art

[0002] At present, the white light LED packaging field is facing the problem that the chromaticity coordinates of the light source test standard machine used by the application end customers and the test standard machine used by the packaging factory are different. The application end requires that the chromaticity coordinates must meet the requirements of the customer application end, which brings the packaging factory the problem of benchmarking differences. The current benchmarking method is to use the chromaticity coordinate x average phase difference method and the chromaticity coordinate y average phase difference method. This existing benchmarking method has its limitations, resulting in large color deviations in the benchmarking results, which leads to a large customer complaint rate and needs to be solved urgently. Summary of the invention

[0003] In order to solve the above-mentioned problems existing in the prior art, the present invention provides a method for calibrating white light chromaticity coordinates of high-precision spectrometers with different LEDs.

[0004] The present invention adopts the following technical solution to solve the above technical problems: a method for calibrating white light chromaticity coordinates of high-precision spectrometers with different LEDs, comprising the following steps:

[0005] S100: Take m (m>3) LEDs and test the chromaticity coordinates of the first LED (x1, y1), the second LED (x2, y2), the third LED (x3, y3), the fourth LED (x4, y4)... the mth LED (x m ,y m ) and B high-precision spectroradiometers. The chromaticity coordinates tested on the first (x1', y1'), the second (x2', y2'), the third (x3', y3'), the fourth (x4', y4') ... the mth (x m ',y m ');

[0006] S200: Each coordinate point and the blue light coordinate point (0.1544, 0.0297) are respectively calculated using the point slope equation y=kx-b to obtain the (slope, intercept) corresponding to the A high-precision spectroradiometer, which are (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K m , -b m ) and B high-precision spectroradiometer corresponding to the (slope, intercept) are (K1', -b1'), (K2', -b2'), (K3', -b3'), (K4', -b4').......(K m ', -b m’); The calculation formula is as follows:

[0007]

[0008] -b = y - Kx..................................................(Equation 2)

[0009] S300: Obtain the abscissa differences Δx1, Δx2, Δx3, Δx4............Δx of m LEDs on the A and B high-precision spectral radiometers m , and obtain the average value Δx of the abscissa differences of m LEDs 平均 The calculation formula is as follows:

[0010]

[0011] S400: Obtain the slope K differences ΔK1, ΔK2, ΔK3, ΔK4.........ΔK of m LEDs on the A and B high-precision spectral radiometers calculated in step S200 m , and obtain the average value ΔK of the slope differences of m LEDs 平均 , The calculation formula is as follows:

[0012]

[0013]

[0014] S500: Calculate the chromaticity coordinates (x B , y B ) on the known B high-precision spectral radiometer converted to the corresponding chromaticity coordinates (x A , y A ) on the A high-precision spectral radiometer, including the following steps:

[0015] S510: Calculate the coordinate point (x B , y B ) and the blue light coordinate point (0.1544, 0.0297) using the point-slope equation y = k B x - b B Respectively obtain the corresponding (slope k B , intercept -b B ) on the B high-precision spectral radiometer, and the calculation formula is as follows:

[0016]

[0017] -b B = y B - K B x B........................................(8 formula);

[0018] S520: Calculate the horizontal axis chromaticity coordinate x on the A high-precision spectral radiometer corresponding to the coordinate point (x B , y B ) on the B high-precision spectral radiometer. The calculation formula is as follows: A The calculation formula is as follows:

[0019] x A = x B + Δx 平均 ............................................(9 formula);

[0020] S530: Calculate the chromaticity coordinates (x B , y B ) on the A high-precision spectral radiometer corresponding to the coordinate point (x A , y A ) on the B high-precision spectral radiometer, and the slope k A x - b A ) and intercept -b A of the straight line equation corresponding to the blue light coordinate point (0.1544, 0.0297) (y = k A ). The calculation formula is as follows:

[0021] K A = K B + ΔK 平均 .........................................(10 formula)

[0022] -b A = 0.0297 - K A * 0.1544....................................(11 formula);

[0023] S540: Calculate the y B , y B ) on the A high-precision spectral radiometer corresponding to the coordinate point (x A , y A ) on the B high-precision spectral radiometer. The calculation formula is as follows: A The calculation formula is as follows:

[0024] y A = K A x A -b A.............................................(Formula 12)

[0025] Combining Formulas 9 - 12 gives the following formula:

[0026]

[0027] Optionally, m = 5;

[0028] The specific steps of step S100 are as follows: Take 5 LEDs, and respectively test the chromaticity coordinates of the 1st (x1, y1), 2nd (x2, y2), 3rd (x3, y3), 4th (x4, y4), and 5th (x5, y5) on a high-precision A spectral radiometer in sequence, and test the chromaticity coordinates of the 1st (x1', y1'), 2nd (x2', y2'), 3rd (x3', y3'), 4th (x4', y4'), and 5th (x5', y5') on a high-precision B spectral radiometer;

[0029] The specific steps of step S200 are as follows: For each coordinate point and the blue light coordinate point (0.1544, 0.0297), use the point-slope equation y = kx - b to respectively obtain the corresponding (slope, intercept) of the high-precision A spectral radiometer as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4), (K5, -b5) and the corresponding (slope, intercept) of the high-precision B spectral radiometer as (K1', -b1'), (K2', -b2'), (K3', -b3'), (K4', -b4'), (K5', -b5'); The calculation formula is as follows:

[0030]

[0031] -b = y - Kx......................................(Formula 2)

[0032] The specific steps of step S300 are as follows: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4, Δx5 of the 5 LEDs on the high-precision A and B spectral radiometers, and calculate the average abscissa difference Δx of the 5 LEDs 平均 The calculation formula is as follows:

[0033]

[0034] The specific steps of step S400 are as follows: Calculate the slope K differences ΔK1, ΔK2, ΔK3, ΔK4, ΔK5 of the 5 LEDs on the high-precision A and B spectral radiometers calculated in step S200, and calculate the average slope difference ΔK of the abscissas of the 5 LEDs平均 , and its calculation formula is as follows:

[0035]

[0036] Step S500 is specifically: calculating the chromaticity coordinates (x B , y B ) on the known high-precision B spectral radiometer and converting them into the corresponding chromaticity coordinates (x A , y A ) on the high-precision A spectral radiometer, including the following steps:

[0037] S510: Calculate the slope k B , intercept -b B ) corresponding to the coordinate point (x B x - b B ) on the high-precision B spectral radiometer and the blue light coordinate point (0.1544, 0.0297) respectively by using the point-slope equation y = k B , and its calculation formula is as follows: B ) on the high-precision B spectral radiometer, and its calculation formula is as follows:

[0038]

[0039] -b B = y B -K B x B ...........................................(Equation 8);

[0040] S520: Calculate the horizontal axis chromaticity coordinate x B , y B ) on the high-precision A spectral radiometer corresponding to the coordinate point (x A ) on the high-precision B spectral radiometer, and its calculation formula is as follows:

[0041] x A = x B +Δx 平均 ..........................................(Equation 9);

[0042] S530: Calculate the chromaticity coordinates (x B , y B ) on the high-precision A spectral radiometer corresponding to the coordinate point (x A , y A ) on the high-precision B spectral radiometer, the blue light coordinate point (0.1544, 0.0297) (y = k A x - b A) corresponding to the equation of the straight line (slope k A , intercept-b A ), which is calculated as follows:

[0043] K A =K B +ΔK 平均 .................................(Formula 10)

[0044] -b A =0.0297-K A *0.1544....................................(Formula 11);

[0045] S540: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ) of y A The value is calculated as follows:

[0046] y A =K A x A -b A .............................................(Formula 12)

[0047] Combining formulas 9-12, we get the following formula:

[0048]

[0049] Optionally, m=7;

[0050] The step S100 specifically comprises: taking 7 LEDs, testing the chromaticity coordinates of the first LED (x1, y1), the second LED (x2, y2), the third LED (x3, y3), the fourth LED (x4, y4) ... the seventh LED (x7, y7) on the A high-precision spectroradiometer in order, and testing the chromaticity coordinates of the first LED (x1', y1'), the second LED (x2', y2'), the third LED (x3', y3'), the fourth LED (x4', y4') ... the seventh LED (x7', y7') on the B high-precision spectroradiometer in order;

[0051] The specific steps of S200 are as follows: For each coordinate point and the blue light coordinate point (0.1544, 0.0297), using the point-slope equation y = kx - b, the corresponding (slope, intercept) values of the A high-precision spectral radiometer are obtained as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K7, -b7) respectively, and the corresponding (slope, intercept) values of the B high-precision spectral radiometer are obtained as (K1’, -b1’), (K2’, -b2’), (K3’, -b3’), (K4’, -b4’).......(K7’, -b7’) respectively. The calculation formula is as follows:

[0052]

[0053] -b = y - Kx.................................(Equation 2)

[0054] The specific steps of S300 are as follows: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4............Δx7 of the 7 LEDs on the A and B high-precision spectral radiometers, and calculate the average abscissa difference Δx of the m LEDs. 平均 The calculation formula is as follows:

[0055]

[0056] The specific steps of S400 are as follows: Calculate the slope K differences ΔK1, ΔK2, ΔK3, ΔK4.........ΔK7 of the 7 LEDs on the A and B high-precision spectral radiometers calculated in step S200, and calculate the average slope difference ΔK of the 7 LEDs. 平均 , and the calculation formula is as follows:

[0057]

[0058] The specific steps of S500 are as follows: Calculate the chromaticity coordinates (x B , y B ) on the known B high-precision spectral radiometer converted to the corresponding chromaticity coordinates (x A , y A ) on the A high-precision spectral radiometer, including the following steps:

[0059] S510: Calculate the coordinate point (x B , y B ) and the blue light coordinate point (0.1544, 0.0297) using the point-slope equation y = k B x - b B to obtain the corresponding (slope k B , intercept -bB ) and its calculation formula is as follows:

[0060]

[0061] -b B = y B -K B x B ..........................................(Equation 8);

[0062] S520: Calculate the horizontal axis chromaticity coordinate x on the A high-precision spectral radiometer corresponding to the coordinate point (x B , y B ) on the B high-precision spectral radiometer, and its calculation formula is as follows: A x

[0063] x A = x B + Δx 平均 ......................................(Equation 9);

[0064] S530: Calculate the chromaticity coordinates (x B , y B ) on the A high-precision spectral radiometer corresponding to the coordinate point (x A , y A ) on the B high-precision spectral radiometer, the straight line equation of the blue light coordinate point (0.1544, 0.0297) (y = k A x - b A ), and the corresponding (slope k A , intercept -b A ), and its calculation formula is as follows:

[0065] K A = K B + ΔK 平均 ...........................(Equation 10)

[0066] -b A = 0.0297 - K A * 0.1544....................................(Equation 11);

[0067] S540: Calculate the chromaticity coordinates (x B , y B ) on the A high-precision spectral radiometer corresponding to the coordinate point (x A , yA )'s y A value, and its calculation formula is as follows:

[0068] y A = K A x A - b A ..........................................(Equation 12)

[0069] Combining Equations 9 - 12 gives the following formula:

[0070]

[0071] Optionally, m = 10;

[0072] The specific steps of step S100 are as follows: Take 10 LEDs and test the chromaticity coordinates on an A high-precision spectral radiometer in sequence as the 1st (x1, y1), the 2nd (x2, y2), the 3rd (x3, y3), the 4th (x4, y4)...... the 10th (x 10 , y 10 ), and test the chromaticity coordinates on a B high-precision spectral radiometer as the 1st (x1’, y1’), the 2nd (x2’, y2’), the 3rd (x3’, y3’), the 4th (x4’, y4’)...... the mth (x 10 ’, y 10 ’);

[0073] The specific steps of step S200 are as follows: For each coordinate point and the blue light coordinate point (0.1544, 0.0297), use the point-slope equation y = kx - b to find the corresponding (slope, intercept) of the A high-precision spectral radiometer as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K 10 , -b 10 ) and the corresponding (slope, intercept) of the B high-precision spectral radiometer as (K1’, -b1’), (K2’, -b2’), (K3’, -b3’), (K4’, -b4’).......(K 10 ’, -b 10 ’); Its calculation formula is as follows:

[0074]

[0075] -b = y - Kx...................................................(Equation 2)

[0076] Step S300 is specifically as follows: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4............Δx of 10 LEDs on high-precision spectrometers A and B 10 , and calculate the average abscissa difference Δx of 10 LEDs 平均 The calculation formula is as follows:

[0077]

[0078] Step S400 is specifically as follows: Calculate the slope K differences ΔK1, ΔK2, ΔK3, ΔK4.........ΔK of 10 LEDs on high-precision spectrometers A and B for the slope calculated in step S200 10 , and calculate the average slope difference ΔK of 10 LEDs 平均 , and the calculation formula is as follows:

[0079]

[0080] Step S500 is specifically as follows: Calculate the chromaticity coordinates (x B , y B ) on the known high-precision spectrometer B converted to the corresponding chromaticity coordinates (x A , y A ) on high-precision spectrometer A, including the following steps:

[0081] S510: Calculate the coordinate point (x B , y B ) and the blue light coordinate point (0.1544, 0.0297) using the point-slope equation y = k B x - b B to respectively calculate the corresponding (slope k B , intercept -b B ) on high-precision spectrometer B, and the calculation formula is as follows:

[0082]

[0083] -b B = y B -K B x B .............................................(Equation 8);

[0084] S520: Calculate the chromaticity coordinate x B corresponding to the coordinate point (x B , y A ) on high-precision spectrometer B on high-precision spectrometer A, and the calculation formula is as follows:

[0085] x A = x B + Δx 平均 .........................................(Equation 9);

[0086] S530: Calculate the chromaticity coordinates (x B , y B ) on the high-precision spectral radiometer A corresponding to the coordinate point (x A , y A ) on the high-precision spectral radiometer B, the straight-line equation of the blue-light coordinate point (0.1544, 0.0297) (y = k A x - b A ), and the corresponding (slope k A , intercept -b A ). The calculation formula is as follows:

[0087] K A = K B + ΔK 平均 .............................(Equation 10)

[0088] -b A = 0.0297 - K A * 0.1544....................................(Equation 11);

[0089] S540: Calculate the y B , y B ) value of the chromaticity coordinates (x A , y A ) on the high-precision spectral radiometer A corresponding to the coordinate point (x A ) on the high-precision spectral radiometer B. The calculation formula is as follows:

[0090] y A = K A x A -b A ...........................................(Equation 12)

[0091] Combining Equations 9 - 12 gives the following formula:

[0092]

[0093] Compared with the prior art, the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers adopts the basic characteristic that the light-emitting principle of white light LEDs must pass through the blue light point (0.1544, 0.0297), that is, for the same white light LED, the chromaticity coordinates measured by different testers are connected to the blue light point (0.1544, 0.0297) to form a straight line. By using the slope deviation ΔK of two straight lines and the calibration method of chromaticity coordinate Δx, the color deviation is reduced to ensure the unity of the calibration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] Figure 1 FIG. is a schematic diagram of the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers provided by the present invention.

[0095] Figure 2 FIG. is the color gamut diagram of customer B that can be calculated under the conditions that the color temperature requirement of customer B is 6300 - 6700K and the Duv requirement is 0.003 - 0.007 in the first embodiment of the present invention.

[0096] Figure 3 FIG. is the binning diagram of the first embodiment of the present invention.

[0097] Figure 4 FIG. is the color gamut diagram of customer B that can be calculated under the conditions that the color temperature requirement of customer B is 2550 - 2700K and the Duv requirement is 0.003 - 0.007 in the second embodiment of the present invention.

[0098] Figure 5 FIG. is the binning diagram of the second embodiment of the present invention.

[0099] Figure 6 FIG. is the color gamut diagram of customer B that can be calculated under the conditions that the color temperature requirement of customer B is 5300 - 5700K and the Duv requirement is 0.002 - 0.006 in the third embodiment of the present invention.

[0100] Figure 7 FIG. is the binning diagram of the third embodiment of the present invention.

[0101] Figure 8 FIG. is the color gamut diagram of customer B that can be calculated under the conditions that the color temperature requirement of customer B is 2900 - 3100K and the Duv requirement is -0.001 - 0.003 in the fourth embodiment of the present invention.

[0102] Figure 9 FIG. is the binning diagram of the fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0103] The following is combined with the attached Figures 1 - 5A further detailed description of the technical solution of the present invention is given. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. Although this specification is described according to embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0104] See Figure 1 As shown, the present invention provides a method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers, which includes the following steps:

[0105] S100: Take m LEDs (m>3), and test the chromaticity coordinates of the 1st (x1, y1), 2nd (x2, y2), 3rd (x3, y3), 4th (x4, y4)...... mth (x m , y m ) on the A high-precision spectral radiometer in sequence and the chromaticity coordinates of the 1st (x1’, y1’), 2nd (x2’, y2’), 3rd (x3’, y3’), 4th (x4’, y4’)...... mth (x m ’, y m ’) on the B high-precision spectral radiometer;

[0106] S200: For each coordinate point and the blue light coordinate point (0.1544, 0.0297), use the point-slope equation y = kx - b to find the corresponding (slope, intercept) of the A high-precision spectral radiometer as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K m , -b m ) and the corresponding (slope, intercept) of the B high-precision spectral radiometer as (K1’, -b1’), (K2’, -b2’), (K3’, -b3’), (K4’, -b4’).......(K m ’, -b m ’). The calculation formula is as follows:

[0107]

[0108] -b = y - Kx..........................................(Equation 2)

[0109] S300: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4............Δx of the m LEDs on the A and B high-precision spectral radiometersm , and calculate the average value Δx of the abscissas of m LEDs 平均 The calculation formula is as follows:

[0110]

[0111] S400: Calculate the differences ΔK1, ΔK2, ΔK3, ΔK4.........ΔK of the slopes K calculated in step S200 for m LEDs on A and B high-precision spectral radiometers m , and calculate the average value ΔK of the abscissas of m LEDs 平均 The calculation formula is as follows:

[0112]

[0113] S500: Calculate the chromaticity coordinates (x B , y B ) converted to the corresponding chromaticity coordinates (x A , y A ) on A high-precision spectral radiometer, including the following steps:

[0114] S510: Calculate the coordinate point (x B , y B ) and the blue light coordinate point (0.1544, 0.0297) using the point-slope equation y = k B x - b B Respectively calculate the corresponding (slope k B , intercept -b B ) on B high-precision spectral radiometer, and the calculation formula is as follows:

[0115]

[0116] -b B = y B -K B x B ..............................................(Equation 8);

[0117] S520: Calculate the chromaticity coordinate x B , y B ) corresponding to the coordinate point on B high-precision spectral radiometer, and the calculation formula is as follows: A The calculation formula is as follows:

[0118] x A = x B +Δx 平均...........................................(Equation 9);

[0119] S530: Calculate the chromaticity coordinates (x B , y B ) corresponding to the coordinate point (x A , y A ) on the B high-precision spectroradiometer, the blue light coordinate point (0.1544, 0.0297) (y = k A x - b A ) of the straight line equation (slope k A , intercept -b A ), and its calculation formula is as follows:

[0120] K A = K B + ΔK 平均 .........................(Equation 10)

[0121] -b A = 0.0297 - K A * 0.1544....................................(Equation 11);

[0122] S540: Calculate the y B , y B ) value of the chromaticity coordinates (x A , y A ) corresponding to the coordinate point (x A ) on the B high-precision spectroradiometer, and its calculation formula is as follows:

[0123] y A = K A x A - b A ...............................................(Equation 12)

[0124] Combining Equations 9 - 12 gives the following formula:

[0125]

[0126] The following specifically illustrates the invention through four different embodiments.

[0127] Embodiment 1.

[0128] The method for calibrating the white light chromaticity coordinates of different LED high-precision spectroradiometers of the present invention includes the following steps:

[0129] S100: Take 10 LEDs and test their chromaticity coordinates on a high-precision A spectral radiometer in sequence as the 1st (x1, y1), the 2nd (x2, y2), the 3rd (x3, y3), the 4th (x4, y4)...... the 10th (x 10 , y 10 ), and test their chromaticity coordinates on a high-precision B spectral radiometer as the 1st (x1’, y1’), the 2nd (x2’, y2’), the 3rd (x3’, y3’), the 4th (x4’, y4’)...... the mth (x 10 ’, y 10 ’);

[0130] S200: For each coordinate point and the blue light coordinate point (0.1544, 0.0297), use the point-slope equation y = kx - b to find the corresponding (slope, intercept) on the high-precision A spectral radiometer as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K 10 , -b 10 ), and the corresponding (slope, intercept) on the high-precision B spectral radiometer as (K1’, -b1’), (K2’, -b2’), (K3’, -b3’), (K4’, -b4’).......(K 10 ’, -b 10 ’); The calculation formula is as follows:

[0131]

[0132] -b = y - Kx......................................(Equation 2)

[0133] S300: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4............Δx of the 10 LEDs on the high-precision A and B spectral radiometers, and calculate the average value of the abscissas of the 10 LEDs Δx 10 , and the calculation formula is as follows: 平均

[0134]

[0135] S400: Calculate the slope K differences ΔK1, ΔK2, ΔK3, ΔK4.........ΔK of the 10 LEDs on the high-precision A and B spectral radiometers calculated in step S200, and calculate the average value of the abscissas of the 10 LEDs ΔK 10 , and the calculation formula is as follows: 平均

[0136] ​​

[0137] S500: Calculate the chromaticity coordinates (x B ,y B ) is converted into the corresponding chromaticity coordinates (x A ,y A ), including the following steps:

[0138] S510: Calculate the coordinate point (x B ,y B ) and the blue light coordinate point (0.1544, 0.0297) using the point slope equation y = k B xb B Calculate the corresponding slope k on the B high-precision spectroradiometer B , intercept-b B ), which is calculated as follows:

[0139]

[0140] -b B =y B -K B x B ...........................................(8 types);

[0141] S520: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinate x A , and its calculation formula is as follows:

[0142] x A =x B +Δx 平均 ..........................................(9 formula);

[0143] S530: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinate (x A ,y A ), blue light coordinate point (0.1544, 0.0297) (y = k A xb A ) corresponding to the equation of the straight line (slope k A , intercept-b A ), which is calculated as follows:

[0144] KA = K B + ΔK 平均 ............................(Equation 10)

[0145] -b A = 0.0297 - K A * 0.1544....................................(Equation 11);

[0146] S540: Calculate the y value of the chromaticity coordinates (x B , y B ) corresponding to the coordinate points (x A , y A ) on the B high-precision spectral radiometer. The calculation formula is as follows: A The y

[0147] y A = K A x A -b A ....................................(Equation 12)

[0148] Combining Equations 9 - 12 gives the following formula:

[0149]

[0150] Customer B's color temperature requirement is 6300 - 6700K, and the Duv requirement is 0.003 - 0.007. Such requirements are relatively strict, and the benchmarking requirements of packaging factory A are very high. Therefore, a very precise benchmarking method is needed to meet the needs of customer B. According to the formulas 1 - 13 of the method for benchmarking the white light chromaticity coordinates of different LED high-precision spectrometers provided by the present invention, the following data are obtained through benchmarking.

[0151] The benchmarking data of 1 - 10 LEDs (taking m as 10) of packaging factory A are shown in Table 1 below:

[0152]

[0153]

[0154] The benchmarking data of 1 - 10 LEDs (taking m as 10) of customer B are shown in Table 2 below:

[0155]

[0156] Δx, ΔK and the calculation results are shown in Table 3 below:

[0157]

[0158]

[0159] The verification results of the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention are as follows

[0160] Table 4:

[0161] <![CDATA[x A > <![CDATA[y A > <![CDATA[x A实测 > <![CDATA[y A实测 > Δx’ Δy’ 0.3059 0.3215 0.3060 0.3226 0.00010 0.00110 0.3079 0.3254 0.3080 0.3246 0.00010 -0.00080 0.3060 0.3272 0.3059 0.3254 -0.00010 -0.00180 0.3087 0.3303 0.3090 0.3320 0.00030 0.00170 0.3092 0.3280 0.3091 0.3267 -0.00010 -0.00130 0.3068 0.3220 0.3064 0.3226 -0.00040 0.00060 0.3101 0.3269 0.3100 0.3278 -0.00010 0.00090 0.3082 0.3259 0.3083 0.3252 0.00010 -0.00070 0.3085 0.3281 0.3086 0.3282 0.00010 0.00010 0.3107 0.3278 0.3103 0.3273 -0.00040 -0.00050

[0162] After calibration, Δx’ and Δy’ of the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention are basically controlled within the range of 0.002, meeting the industry calibration standard.

[0163] Customer B requires a color temperature of 6300 - 6700K and a Duv of 0.003 - 0.007. The color gamut of Customer B can be calculated as Figure 2 and shown in Table 5 below.

[0164]

[0165] . Among them, 65B - B is the color gamut binning standard required by Customer B, and 65B - A is the color gamut binning standard after conversion by the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention. Its binning is shown in Figure 3 shown.

[0166] Example 2

[0167] Customer B requires a color temperature of 2550 - 2700K and a Duv of 0.003 - 0.007. Such requirements are relatively stringent, and the calibration requirements of Packaging Factory A are very high. Therefore, a very precise calibration method is needed to meet the needs of Customer B. According to Formula 1 - 13 of the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers provided by the present invention, the following data are obtained through calibration.

[0168] The calibration data of the 1st - 10th LEDs (taking m as 10) of Packaging Factory A are as shown in Table 6 below

[0169]

[0170] The calibration data of the 1st - 10th LEDs (taking m as 10) of Customer B are as shown in Table 7 below

[0171]

[0172]

[0173] Δx, ΔK and the calculation results are as shown in Table 8 below

[0174] NO. Δx ΔK NO. <![CDATA[x B > <![CDATA[y B > <![CDATA[x A > <![CDATA[y A > 1 -0.0034 0.008528932 1 0.4763 0.4279 0.4729 0.4267 2 -0.0033 0.011090284 2 0.4745 0.4287 0.4711 0.4275 3 -0.0035 0.005233702 3 0.4737 0.4248 0.4703 0.4236 4 -0.0033 0.011098991 4 0.4782 0.4278 0.4748 0.4267 5 -0.0035 0.0087269 5 0.4740 0.4267 0.4706 0.4255 6 -0.0036 0.011683676 6 0.4773 0.4271 0.4739 0.4259 7 -0.0033 0.011743287 7 0.4882 0.4324 0.4848 0.4314 8 -0.0031 0.007094412 8 0.4820 0.4305 0.4786 0.4294 9 -0.0032 0.010890663 9 0.4857 0.4307 0.4823 0.4297 10 -0.0034 0.008724374 10 0.4791 0.4301 0.4757 0.4290 Average value -0.00336 0.009481522 。

[0175] The verification results of the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention are shown in Table 9 below:

[0176] <![CDATA[x A > <![CDATA[y A > <![CDATA[x A实测 > <![CDATA[y A实测 > Δx’ Δy’ 0.4729 0.4267 0.4729 0.4274 0.00000 0.00070 0.4711 0.4275 0.4712 0.4281 0.00010 0.00060 0.4703 0.4236 0.4702 0.4241 -0.00010 0.00050 0.4748 0.4267 0.4749 0.4273 0.00010 0.00060 0.4706 0.4255 0.4705 0.4261 -0.00010 0.00060 0.4739 0.4259 0.4737 0.4264 -0.00020 0.00050 0.4848 0.4314 0.4849 0.4323 0.00010 0.00090 0.4786 0.4294 0.4789 0.4300 0.00030 0.00060 0.4823 0.4297 0.4825 0.4304 0.00020 0.00070 0.4757 0.4290 0.4757 0.4297 0.00000 0.00070 。

[0177] For the method of calibrating the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention, Δx’ and Δy’ are basically controlled within the range of 0.001, meeting the industry calibration standards.

[0178] Customer B requires a color temperature of 2550 - 2700K and a Duv of 0.003 - 0.007. The color gamut of Customer B can be calculated as Figure 4 and Table 10 below:

[0179]

[0180] 。 Among them, 26B - B is the color gamut binning standard required by Customer B, and 26B - A is the color gamut binning standard after conversion by the method of calibrating the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention. Its binning is shown in Figure 5 as follows.

[0181] Example 3.

[0182] The method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers in this example includes the following steps:

[0183] S100: Take 7 LEDs, and test the chromaticity coordinates of the first (x1, y1), the second (x2, y2), the third (x3, y3), the fourth (x4, y4)... the seventh (x7, y7) on the A high-precision spectral radiometer in sequence and the chromaticity coordinates of the first (x1’, y1’), the second (x2’, y2’), the third (x3’, y3’), the fourth (x4’, y4’)... the seventh (x7’, y7’) on the B high-precision spectral radiometer;

[0184] S200: For each coordinate point and the blue light coordinate point (0.1544, 0.0297), the (slope, intercept) corresponding to the A high-precision spectral radiometer is obtained by using the point-slope equation y = kx - b as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K7, -b7) respectively, and the (slope, intercept) corresponding to the B high-precision spectral radiometer is (K1’, -b1’), (K2’, -b2’), (K3’, -b3’), (K4’, -b4’).......(K7’, -b7’) respectively; the calculation formula is as follows:

[0185]

[0186] -b = y - Kx...........................................(Equation 2)

[0187] S300: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4............Δx7 of the 7 LEDs on the A and B high-precision spectral radiometers, and calculate the average value Δx of the abscissas of the m LEDs 平均 The calculation formula is as follows:

[0188]

[0189] S400: Calculate the slope K differences ΔK1, ΔK2, ΔK3, ΔK4.........ΔK7 of the 7 LEDs on the A and B high-precision spectral radiometers calculated in step S200, and calculate the average value ΔK of the abscissas of the 7 LEDs 平均 , the calculation formula is as follows:

[0190]

[0191] S500: Calculate the chromaticity coordinates (x B , y B ) known on the B high-precision spectral radiometer and convert them to the corresponding chromaticity coordinates (x A , y A ) on the A high-precision spectral radiometer, including the following steps:

[0192] S510: Calculate the coordinate point (x B , y B ) and the blue light coordinate point (0.1544, 0.0297) using the point-slope equation y = k B x - b B to obtain the corresponding (slope k B , intercept -b B ) on the B high-precision spectral radiometer respectively, and the calculation formula is as follows:

[0193]

[0194] -b B = y B -K B x B ...........................................(Equation 8);

[0195] S520: Calculate the chromaticity coordinates x B , y B ) corresponding to the coordinate point (x A ) on the B high-precision spectral radiometer. The calculation formula is as follows:

[0196] x A = x B + Δx 平均 ..........................................(Equation 9);

[0197] S530: Calculate the chromaticity coordinates (x B , y B ) corresponding to the coordinate point (x A , y A ) on the B high-precision spectral radiometer, the straight-line equation of the blue-light coordinate point (0.1544, 0.0297) (y = k A x - b A ). The corresponding (slope k A , intercept -b A ) is calculated as follows:

[0198] K A = K B + ΔK 平均 ..............................(Equation 10)

[0199] -b A = 0.0297 - K A * 0.1544....................................(Equation 11);

[0200] S540: Calculate the y B , y B ) value of the chromaticity coordinates (x A , y A ) corresponding to the coordinate point (x A ) on the B high-precision spectral radiometer. The calculation formula is as follows:

[0201] y A = K A x A - b A ........................................(Equation 12)

[0202] Combining Equations 9 - 12 gives the following formula:

[0203]

[0204] Customer B requires a color temperature of 5300 - 5700K and a Duv of 0.002 - 0.006. Such requirements are relatively stringent, and the benchmarking requirements of Packaging Factory A are very high. Therefore, a very precise benchmarking method is needed to meet the needs of Customer B. According to the formulas 1 - 13 of the method for benchmarking the white light chromaticity coordinates of different LED high-precision spectrometers provided by the present invention, the following data are obtained through benchmarking:

[0205] The benchmarking data of LEDs 1 - 7 of Packaging Factory A (taking m as 7) are as shown in Table 11 below:

[0206]

[0207]

[0208] The benchmarking data of LEDs 1 - 7 of Customer B (taking m as 7) are as shown in Table 12 below:

[0209]

[0210] Δx, ΔK and the calculation results are as shown in Table 13 below:

[0211]

[0212] The verification results of the method for benchmarking the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention are as follows

[0213] Table 14:

[0214] xA yA Measured xA Measured yA Δx’ Δy’ 0.3295 0.3436 0.3300 0.3439 0.00050 0.00030 0.3295 0.3452 0.3285 0.3460 -0.00100 0.00080 0.3281 0.3443 0.3294 0.3445 0.00130 0.00020 0.3289 0.3438 0.3288 0.3432 -0.00010 -0.00060 0.3269 0.3427 0.3259 0.3415 -0.00100 -0.00120 0.3334 0.3514 0.3334 0.3509 0.00000 -0.00050 0.3334 0.3505 0.3334 0.3509 0.00000 0.00040 .

[0215] After benchmarking, Δx' and Δy' of the method for benchmarking the white light chromaticity coordinates of different LED high-precision spectrometers of the present invention are basically controlled within the range of 0.0015, meeting the industry benchmarking standard.

[0216] Customer B requires a color temperature of 5300 - 5700K and a Duv of 0.002 - 0.006. The color gamut of Customer B can be calculated as Figure 6 and as shown in Table 15 below.

[0217]

[0218] 。 Among them, 55B - B is the color - differentiated BIN standard required by customer B, and 55B - A is the color - area benchmarking BIN standard converted by the method of benchmarking the white - light chromaticity coordinates of different LED high - precision spectrometers according to the present invention. The BIN division is shown in Figure 7 。

[0219] Example 4.

[0220] The method of benchmarking the white - light chromaticity coordinates of different LED high - precision spectrometers in this example includes the following steps:

[0221] S100: Take 5 LEDs and test the chromaticity coordinates of the 1st (x1, y1), 2nd (x2, y2), 3rd (x3, y3), 4th (x4, y4), 5th (x5, y5) on the high - precision spectral radiometer A in sequence, and test the chromaticity coordinates of the 1st (x1’, y1’), 2nd (x2’, y2’), 3rd (x3’, y3’), 4th (x4’, y4’), 5th (x5’, y5’) on the high - precision spectral radiometer B;

[0222] S200: For each coordinate point and the blue - light coordinate point (0.1544, 0.0297), use the point - slope equation y = kx - b to find the corresponding (slope, intercept) of the high - precision spectral radiometer A as (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4), (K5, -b5) and the corresponding (slope, intercept) of the high - precision spectral radiometer B as (K1’, -b1’), (K2’, -b2’), (K3’, -b3’), (K4’, -b4’), (K5’, -b5’); The calculation formula is as follows:

[0223]

[0224] -b = y - Kx.................................(Equation 2)

[0225] S300: Calculate the abscissa differences Δx1, Δx2, Δx3, Δx4, Δx5 of the 5 LEDs on the high - precision spectral radiometers A and B, and calculate the average abscissa Δx of the 5 LEDs 平均 The calculation formula is as follows:

[0226]

[0227] S400: Calculate the differences ΔK1, ΔK2, ΔK3, ΔK4, ΔK5 in the slopes K calculated for the five LEDs on the A and B high-precision spectral radiometers in step S200, and calculate the average value ΔK of the abscissas of the five LEDs. 平均 , and its calculation formula is as follows:

[0228]

[0229] S500: Calculate the chromaticity coordinates (x B , y B ) on the known B high-precision spectral radiometer converted to the corresponding chromaticity coordinates (x A , y A ) on the A high-precision spectral radiometer, including the following steps:

[0230] S510: Calculate the coordinate points (x B , y B ) and the blue light coordinate point (0.1544, 0.0297) using the point-slope equation y = k B x - b B to separately find the corresponding (slope k B , intercept -b B ) on the B high-precision spectral radiometer, and its calculation formula is as follows:

[0231]

[0232] -b B = y B -K B x B ..........................................(Equation 8);

[0233] S520: Calculate the chromaticity coordinate x B , y B ) corresponding to the coordinate point (x A ) on the B high-precision spectral radiometer, and its calculation formula is as follows:

[0234] x A = x B +Δx 平均 .......................................(Equation 9);

[0235] S530: Calculate the chromaticity coordinates (x B , y B ) corresponding to the coordinate point (x A , y A) The straight-line equation corresponding to the blue-light coordinate point (0.1544, 0.0297) (y = k A x - b A ) (the slope k A , intercept -b A ), and its calculation formula is as follows:

[0236] K A = K B + ΔK 平均 .................................(Equation 10)

[0237] -b A = 0.0297 - K A * 0.1544....................................(Equation 11);

[0238] S540: Calculate the y B , y B ) corresponding chromaticity coordinate (x A , y A ) of the coordinate point (x A ) on the B high-precision spectral radiometer, and its calculation formula is as follows:

[0239] y A = K A x A -b A ......................................(Equation 12)

[0240] Combining Equations 9 - 12 gives the following formula:

[0241]

[0242] The customer B color temperature requirement is 2900 - 3100K, and the Duv requirement is -0.001 - 0.003. Such requirements are relatively harsh, and the benchmarking requirements of the packaging factory A are very high. Therefore, a very precise benchmarking method is needed to meet the needs of customer B. According to the formulas 1 - 13 of the method for benchmarking the white-light chromaticity coordinates of different LED high-precision spectrometers provided by the present invention, the following data are obtained through benchmarking.

[0243] The benchmarking data of 1 - 5 LEDs (taking m as 5) of the packaging factory A are as shown in Table 16 below:

[0244]

[0245] The benchmarking data of 1 - 5 LEDs (taking m as 5) of the customer B are as shown in Table 17 below:

[0246]

[0247] Δx, ΔK, and the calculation results are shown in Table 18 below:

[0248] NO. Δx ΔK NO. xB yB xA yA 1 -0.0044 0.012839876 1 0.4409 0.4088 0.4366 0.4063 2 -0.0043 0.010176322 2 0.4403 0.4064 0.4360 0.4039 3 -0.0044 0.012116753 3 0.4396 0.4058 0.4353 0.4033 4 -0.004 0.009254794 4 0.4346 0.4049 0.4303 0.4022 5 -0.0042 0.011838188 5 0.4451 0.4098 0.4408 0.4074 Average value -0.00426 0.011245187 。

[0249] The verification results of the method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers according to the present invention are shown in Table 19 below:

[0250] xA yA Measured xA Measured yA Δx’ Δy’ 0.4366 0.4063 0.4365 0.4066 -0.00010 0.00030 0.4360 0.4039 0.4360 0.4036 0.00000 -0.00030 0.4353 0.4033 0.4352 0.4034 -0.00010 0.00010 0.4303 0.4022 0.4306 0.4021 0.00030 -0.00010 0.4408 0.4074 0.4409 0.4077 0.00010 0.00030 。

[0251] For the method of calibrating the white light chromaticity coordinates of different LED high-precision spectrometers according to the present invention, Δx' and Δy' are basically controlled within the range of 0.0010, meeting the industry calibration standard.

[0252] Customer B requires a color temperature of 2900 - 3100K and a Duv requirement of -0.001 - 0.003. The color gamut of Customer B can be calculated as Figure 8 and shown in Table 20 below:

[0253]

[0254]

[0255] 。 Among them, 31B - B is the color gamut binning standard required by Customer B, and 31B - A is the color gamut calibration binning standard after conversion by the present invention. The binning is shown in Figure 9 。

[0256] From the above four embodiments, it can be seen that for the method of calibrating the white light chromaticity coordinates of different LED high-precision spectrometers provided by the embodiments of the present invention, it adopts the basic characteristic that the light-emitting principle of white light LEDs must pass through the blue light point (0.1544, 0.0297), that is, for the same white light LED, the chromaticity coordinates measured by different testers are connected to the blue light point (0.1544, 0.0297) to form a straight line. By using the calibration method of the slope deviation ΔK between two straight lines and the chromaticity coordinate Δx, the color deviation is reduced to ensure the unity of the calibration effect.

[0257] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for calibrating the white light chromaticity coordinates of different LED high-precision spectrometers, characterized in that: The following steps are involved: S100: Take m (m>3) LEDs and test the chromaticity coordinates of the first LED (x1, y1), the second LED (x2, y2), the third LED (x3, y3), the fourth LED (x4, y4)... the mth LED (x m ,y m ) and B high-precision spectroradiometers. The chromaticity coordinates tested on the first (x1', y1'), the second (x2', y2'), the third (x3', y3'), the fourth (x4', y4') ... the mth (x m ',y m '); S200: Each coordinate point and the blue light coordinate point (0.1544, 0.0297) are respectively calculated using the point slope equation y=kx-b to obtain the (slope, intercept) corresponding to the A high-precision spectroradiometer, which are (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K m , -b m ) and B high-precision spectroradiometer corresponding to the (slope, intercept) are (K1', -b1'), (K2', -b2'), (K3', -b3'), (K4', -b4').......(K m ', -b m '); the calculation formula is as follows: -b=y-Kx................(Formula 2) S300: Calculate the horizontal coordinate differences of m LEDs on A and B high-precision spectroradiometers Δx1, Δx2, Δx3, Δx4............Δx m , and find the average value of the horizontal coordinate difference of m LEDs Δx 平均 The calculation formula is as follows: S400: Calculate the slope K differences ΔK1, ΔK2, ΔK3, ΔK4, ........ ΔK of the m LEDs on the A and B high-precision spectroradiometers calculated in step S200 m , and find the average value of the slope difference of m LEDs ΔK 平均 , and its calculation formula is as follows: S500: Calculate the chromaticity coordinates (x B ,y B ) is converted into the corresponding chromaticity coordinates (x A ,y A ), including the following steps: S510: Calculate the coordinate point (x B ,y B ) and the blue light coordinate point (0.1544, 0.0297) using the point slope equation y = k B xb B Calculate the corresponding slope k on the B high-precision spectroradiometer B , intercept-b B ), which is calculated as follows: -b B =y B -K B x B .........................................(Formula 8); S520: Calculate the coordinate point (x B ,y B ) corresponds to the horizontal chromaticity coordinate x on the A high-precision spectroradiometer A , and its calculation formula is as follows: x A = x B + Δx 平均 .........................................(Equation (9)); S530: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ), blue light coordinate point (0.1544, 0.0297) (y = k A xb A ) corresponding to the equation of the straight line (slope k A , intercept-b A ), which is calculated as follows: K A =K B +ΔK 平均 .......................................................(Formula 10) -b A =0.0297-K A *0.1544....................................(Formula 11); S540: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ) of y A The value is calculated as follows: y A =K A x A -b A ................................................(Formula 12) Combining formulas 9-12, we get the following formula:

2. The method for calibrating white light chromaticity coordinates of high-precision spectrometers with different LEDs according to claim 1, characterized in that: m＝5； The step S100 is specifically as follows: take 5 LEDs, and test the chromaticity coordinates of the first LED (x1, y1), the second LED (x2, y2), the third LED (x3, y3), the fourth LED (x4, y4), and the fifth LED (x5, y5) on the A high-precision spectroradiometer in order; and the chromaticity coordinates of the first LED (x1', y1'), the second LED (x2', y2'), the third LED (x3', y3'), the fourth LED (x4', y4'), and the fifth LED (x5', y5') on the B high-precision spectroradiometer in order; The step S200 is specifically as follows: each coordinate point and the blue light coordinate point (0.1544, 0.0297) are respectively calculated using the point slope equation y=kx-b to obtain the (slope, intercept) corresponding to the A high-precision spectroradiometer, which are (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4), (K5, -b5) and the (slope, intercept) corresponding to the B high-precision spectroradiometer, which are (K1', -b1'), (K2', -b2'), (K3', -b3'), (K4', -b4'), (K5', -b5'); the calculation formula is as follows: -b=y-Kx........................(Formula 2) The step S300 specifically comprises: calculating the horizontal coordinate differences Δx1, Δx2, Δx3, Δx4, and Δx5 of the five LEDs on the A and B high-precision spectroradiometers, and calculating the horizontal coordinate average value difference Δx of the five LEDs. 平均 The calculation formula is as follows: The step S400 specifically comprises: obtaining the slope K differences ΔK1, ΔK2, ΔK3, ΔK4, and ΔK5 of the five LEDs on the A and B high-precision spectroradiometers calculated in step S200, and obtaining the average slope difference ΔK of the abscissas of the five LEDs. 平均 , and its calculation formula is as follows: The step S500 is specifically as follows: calculating the chromaticity coordinates (x B ,y B ) is converted into the corresponding chromaticity coordinates (x A ,y A ), including the following steps: S510: Calculate the coordinate point (x B ,y B ) and the blue light coordinate point (0.1544, 0.0297) using the point slope equation y = k B xb B Calculate the corresponding slope k on the B high-precision spectroradiometer B , intercept-b B ), which is calculated as follows: -b B =y B -K B x B ...........................(Formula 8); S520: Calculate the coordinate point (x B ,y B ) corresponds to the horizontal axis chromaticity coordinate x on the A high-precision spectroradiometer A , and its calculation formula is as follows: x A = x B + Δx 平均 ................................(Equation (9)); S530: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ), blue light coordinate point (0.1544, 0.0297) (y = k A xb A ) corresponding to the equation of the straight line (slope k A , intercept-b A ), which is calculated as follows: K A =K B +ΔK 平均 .................................(Formula 10) -b A =0.0297-K A *0.1544....................................(Formula 11); S540: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ) of y A The value is calculated as follows: y A =K A x A -b A ........................................................(Formula 12) Combining formulas 9-12, we get the following formula:

3. The method for aligning white light chromaticity coordinates of high-precision spectrometers with different LEDs according to claim 1, characterized in that: m＝7； The step S100 specifically comprises: taking 7 LEDs, testing the chromaticity coordinates of the first LED (x1, y1), the second LED (x2, y2), the third LED (x3, y3), the fourth LED (x4, y4) ... the seventh LED (x7, y7) on the A high-precision spectroradiometer in order, and testing the chromaticity coordinates of the first LED (x1', y1'), the second LED (x2', y2'), the third LED (x3', y3'), the fourth LED (x4', y4') ... the seventh LED (x7', y7') on the B high-precision spectroradiometer in order; The step S200 is specifically as follows: each coordinate point and the blue light coordinate point (0.1544, 0.0297) are respectively calculated using the point slope equation y=kx-b to obtain the (slope, intercept) corresponding to the A high-precision spectroradiometer, which are (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4) ... (K7, -b7) and the (slope, intercept) corresponding to the B high-precision spectroradiometer, which are (K1', -b1'), (K2', -b2'), (K3', -b3'), (K4', -b4') ... (K7', -b7'); the calculation formula is as follows: -b=y-Kx........................(2 formula) The step S300 is specifically as follows: finding the horizontal coordinate differences Δx1, Δx2, Δx3, Δx4, ... Δx7 of the seven LEDs on the A and B high-precision spectroradiometers, and finding the horizontal coordinate average value difference Δx of the m LEDs. 平均 The calculation formula is as follows: The step S400 is specifically as follows: finding the slope K differences ΔK1, ΔK2, ΔK3, ΔK4, ... ΔK7 of the seven LEDs calculated on the A and B high-precision spectroradiometers in step S200, and finding the average slope difference ΔK of the seven LEDs. 平均 , and its calculation formula is as follows: The step S500 is specifically as follows: calculating the chromaticity coordinates (x B ,y B ) is converted into the corresponding chromaticity coordinates (x A ,y A ), including the following steps: S510: Calculate the coordinate point (x B ,y B ) and the blue light coordinate point (0.1544, 0.0297) using the point slope equation y = k B xb B Calculate the corresponding slope k on the B high-precision spectroradiometer B , intercept-b B ), which is calculated as follows: -b B =y B -K B x B ......................................(8 formula); S520: Calculate the coordinate point (x B ,y B ) corresponds to the horizontal chromaticity coordinate x on the A high-precision spectroradiometer A , and its calculation formula is as follows: x A = x B + Δx 平均 .............................................(Equation 9); S530: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinate (x A ,y A ), blue light coordinate point (0.1544, 0.0297) (y = k A xb A ) corresponding to the equation of the straight line (slope k A , intercept-b A ), which is calculated as follows: K A =K B +ΔK 平均 .......................................(Formula 10) -b A =0.0297-K A *0.1544....................................(Formula 11); S540: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinate (x A ,y A ) of y A The value is calculated as follows: y A =K A x A -b A ......................................(Formula 12) Combining formulas 9-12, we get the following formula:

4. The method for aligning white light chromaticity coordinates of high-precision spectrometers with different LEDs according to claim 1, characterized in that: m＝10； The step S100 specifically includes: taking 10 LEDs, and testing the chromaticity coordinates of the first LED (x1, y1), the second LED (x2, y2), the third LED (x3, y3), the fourth LED (x4, y4) ... the tenth LED (x 10 ,y 10 ) and B high-precision spectroradiometers. The chromaticity coordinates tested on the first (x1', y1'), the second (x2', y2'), the third (x3', y3'), the fourth (x4', y4') ... the mth (x 10 ',y 10 '); The step S200 is specifically as follows: each coordinate point and the blue light coordinate point (0.1544, 0.0297) are respectively calculated using the point slope equation y=kx-b to obtain the (slope, intercept) corresponding to the A high-precision spectroradiometer, which are (K1, -b1), (K2, -b2), (K3, -b3), (K4, -b4).......(K 10 , -b 10 ) and B high-precision spectroradiometer corresponding to the (slope, intercept) are (K1', -b1'), (K2', -b2'), (K3', -b3'), (K4', -b4').......(K 10 ', -b 10 '); the calculation formula is as follows: -b=y-Kx................................................(Formula 2) The step S300 is specifically as follows: finding the horizontal coordinate differences Δx1, Δx2, Δx3, Δx4, and Δx5 of the 10 LEDs on the A and B high-precision spectroradiometers. 10 , and find the difference Δx of the average value of the horizontal coordinates of the 10 LEDs 平均 The calculation formula is as follows: The step S400 is specifically to obtain the slope K differences ΔK1, ΔK2, ΔK3, ΔK4, ... ΔK of the 10 LEDs calculated in step S200 on the A and B high-precision spectroradiometers. 10 , and find the average difference ΔK of the slopes of the 10 LEDs 平均 , and its calculation formula is as follows: The step S500 is specifically as follows: calculating the chromaticity coordinates (x B ,y B ) is converted into the corresponding chromaticity coordinates (x A ,y A ), including the following steps: S510: Calculate the coordinate point (x B ,y B ) and the blue light coordinate point (0.1544, 0.0297) using the point slope equation y = k B xb B Calculate the corresponding slope k on the B high-precision spectroradiometer B , intercept-b B ), which is calculated as follows: -b B =y B -K B x B ........................................(Formula 8); S520: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinate x on the A high-precision spectroradiometer A , and its calculation formula is as follows: x A = x B + Δx 平均 .................................................(Equation (9)); S530: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ), blue light coordinate point (0.1544, 0.0297) (y = k A xb A ) corresponding to the equation of the straight line (slope k A , intercept-b A ), which is calculated as follows: K A =K B +ΔK 平均 .....................................................................(Formula 10) -b A =0.0297-K A *0.1544....................................(Formula 11); S540: Calculate the coordinate point (x B ,y B ) corresponds to the chromaticity coordinates (x A ,y A ) of y A The value is calculated as follows: y A =K A x A -b A ........................................................(Formula 12) Combining formulas 9-12, we get the following formula:

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