CN110728962B - Blue light adjusting method, blue light adjusting device, computer equipment and medium - Google Patents
Blue light adjusting method, blue light adjusting device, computer equipment and medium Download PDFInfo
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- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The invention discloses a blue light adjusting method, a blue light adjusting device, computer equipment and a medium, wherein the blue light adjusting method comprises the following steps: s1: receiving first spectrum data of a light emitting diode of a liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating color coordinates, color temperature and output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data; s2: judging whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, if not, jumping to S3, otherwise, ending the adjustment; s3: and adjusting the red gain, the green gain and the blue gain of the liquid crystal screen to be detected, recalculating the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain, and jumping to S2. The embodiment provided by the invention can quickly adjust the blue light of the liquid crystal screen and has wide application prospect.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a blue light adjustment method, a blue light adjustment apparatus, a computer device, and a medium.
Background
At present, visual terminals such as smart phones, tablet computers and displays play an increasingly important role in life of people, but too much use can cause harm to human eyes. The damage of the visual terminal to the eyes is mainly shown as follows: too long a time of use, close range use, blue light damage, too bright or too dark environment, etc. As people's understanding of the damage of blue light deepens, more and more terminal products begin to design the function of preventing blue light.
At present, in the development process of the liquid crystal display screen, the low blue light requirement is realized by continuously adjusting the parameters of the liquid crystal display screen, however, the existing adjustment mode has long development time and low efficiency and is not beneficial to large-scale production and manufacturing, so that a blue light adjustment method needs to be provided to solve the existing problems.
Disclosure of Invention
In order to solve at least one of the above problems, a first embodiment of the present invention provides a blue light adjustment method, including:
s1: receiving first spectrum data of a light emitting diode of a liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating color coordinates, color temperature and output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data;
s2: judging whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, if not, jumping to S3, otherwise, ending the adjustment;
s3: and adjusting the red gain, the green gain and the blue gain of the liquid crystal screen to be detected, recalculating the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain, and jumping to S2.
Further, the step S1: receiving first spectrum data of a light emitting diode of the liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating the color coordinate, the color temperature and the output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data further comprises:
s11: receiving first spectrum data of a light emitting diode of a liquid crystal screen to be detected;
s12: receiving second spectrum data of the liquid crystal screen to be detected;
s13: calculating the color coordinate of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data;
s14: calculating the color temperature of the liquid crystal screen to be detected according to the color coordinates of the liquid crystal screen to be detected;
s15: and calculating the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data.
Further, the step S13: calculating the color coordinate of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data further comprises:
s131: respectively calculating the tristimulus values of red, green and blue of the liquid crystal screen to be detected according to the first spectral data, the second spectral data and the standard chromaticity color matching function;
s132: calculating color coordinates of red, green and blue according to the tristimulus values of red, green and blue respectively;
s133: and calculating the color coordinates of the liquid crystal screen to be detected according to the red, green and blue color coordinates.
Further, the step S15: calculating the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data further comprises:
s151: respectively calculating second stimulus values of red, green and blue of the liquid crystal screen to be tested according to the first spectrum data, the second spectrum data and a standard chromaticity color matching function;
s152: and calculating the output spectral power distribution of the liquid crystal screen to be tested according to the red, green and blue second stimulus values of the liquid crystal screen to be tested.
Further, the step S11: receiving first spectral data of a light emitting diode of a liquid crystal screen to be tested further comprises:
s111: controlling an integrating sphere and a spectrum analyzer to measure a light emitting diode of the liquid crystal screen to be measured;
s112: first spectral data output by the spectral analyzer is received.
Further, the step S12: receiving the second spectrum data of the liquid crystal screen to be tested further comprises:
s121: controlling a spectral radiometer to measure the liquid crystal screen to be measured;
s122: and receiving second spectral data output by the spectroradiometer.
A second embodiment of the present invention provides a blue light adjusting device, which includes a receiving unit, a control unit and an adjusting unit, wherein,
the receiving unit is configured to receive first spectrum data of a light emitting diode of a liquid crystal screen to be tested and second spectrum data of the liquid crystal screen to be tested;
the control unit is configured to calculate the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data, judge whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, and output a judgment result;
and the adjusting unit is configured to adjust the red gain, the green gain and the blue gain of the liquid crystal screen to be detected according to the judgment result, and recalculate the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain.
Further, the control unit is also configured to control the integrating sphere and the spectrum analyzer to measure the light emitting diode of the liquid crystal screen to be measured, and control the spectral radiometer to measure the liquid crystal screen to be measured.
A third embodiment of the invention provides a computer-readable storage medium, on which a computer program is stored which, when executed by a processor, implements the method according to the first embodiment.
A fourth embodiment of the invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to the first embodiment when executing the program.
The invention has the following beneficial effects:
aiming at the existing problems, the invention provides a blue light adjusting method, a blue light adjusting device, computer equipment and a medium, the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected are calculated by measuring the first spectral data and the second spectral data of the liquid crystal screen to be detected, whether the liquid crystal screen to be detected meets the preset blue light requirement or not is judged according to the color temperature and the output spectral power distribution, if not, the red gain, the green gain and the blue gain of the liquid crystal screen to be detected are adjusted, so that the liquid crystal screen to be detected meets the preset blue light requirement, the problems in the prior art are solved, the blue light of the liquid crystal screen can be quickly adjusted, and the blue light adjusting device has a wide application prospect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart illustrating a blue light adjustment method according to an embodiment of the invention;
FIG. 2 is a block diagram of a blue light adjustment device according to an embodiment of the present invention;
FIG. 3 shows a data diagram of the first spectrum according to an embodiment of the present invention;
FIG. 4 is a data diagram illustrating the second spectrum according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a standard chrominance color matching function according to one embodiment of the present invention;
FIG. 6 is a data diagram illustrating a standard chrominance color matching function according to an embodiment of the present invention;
FIG. 7 is a data diagram illustrating tristimulus values for red, green and blue colors according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of data for measuring color coordinates of a liquid crystal panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a computer device according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, an embodiment of the present invention provides a blue light adjustment method, including: s1: receiving first spectrum data of a light emitting diode of a liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating color coordinates, color temperature and output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data; s2: judging whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, if not, jumping to S3, otherwise, ending the adjustment; s3: and adjusting the red gain, the green gain and the blue gain of the liquid crystal screen to be detected, recalculating the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain, and jumping to S2.
In a specific example, as shown in fig. 2, a blue light adjusting device is used to adjust blue light of a liquid crystal display screen to be tested, where the blue light adjusting device includes a receiving unit, a control unit, and an adjusting unit, and the specific steps are as follows:
s11: the control unit receives first spectrum data of a light emitting diode of the liquid crystal screen to be tested.
In this embodiment, the light emitting diode is a light emitting diode in a backlight source of a liquid crystal display to be tested, the light emitting diode in the same specification and batch as the light emitting diode in the backlight source is selected for measurement, the control unit controls the spectrum measuring device to obtain spectrum data of the light emitting diode and sends the spectrum data to the receiving unit, for example, controls the integrating sphere and the spectrum analyzer to measure the light emitting diode of the liquid crystal display to be tested, and the method specifically includes:
s111: and the control unit controls the integrating sphere and the spectrum analyzer to measure the light emitting diode of the liquid crystal screen to be measured.
In this embodiment, the light emitting diode to be measured is connected in the positive electrode and the negative electrode of the integrating sphere, the output end of the spectrum analyzer is connected with the receiving unit, the integrating sphere and the spectrum analyzer are arranged and started, and the spectrum of the light emitting diode is measured by the spectrum analyzer with 1nm as the step size in the range of 380-780nm wavelength of visible light in consideration of the accuracy of measurement. Then the control unit applies 3V voltage to the LED to be tested to enable the LED to emit light.
S112: the control unit receives first spectrum data output by the spectrum analyzer.
In the present embodiment, as shown in fig. 3, the receiving unit connected to the spectrum analyzer receives the first spectrum data output from the spectrum analyzer, i.e., the spectrum data in fig. 3, and transmits the first spectrum data to the control unit. It should be noted that fig. 3 only shows the spectrum data of the tested led in the wavelength range of 380nm to 450nm, and those skilled in the art can obtain the spectrum data of the led in the wavelength range of 380-780nm according to the above operations, which is not described herein again.
S12: and the control unit receives second spectrum data of the liquid crystal screen to be detected.
In this embodiment, the control unit controls the spectrum measuring device to obtain spectrum data of the liquid crystal display to be measured and sends the spectrum data to the receiving unit, for example, controls the spectroradiometer to measure the spectrum of the liquid crystal display to be measured, and specifically includes:
s121: and the control unit controls the spectroradiometer to measure the liquid crystal screen to be measured.
In this embodiment, the spectroradiometer is disposed 20cm above the lcd panel to be measured, and the spectroradiometer is set and started, similar to the above-mentioned arrangement of the measurement light emitting diode, and in order to improve the measurement accuracy, 1nm is used as a step amount within the range of 380-780nm wavelength of the visible light. And then, lighting the liquid crystal screen, and measuring a second spectrum of the liquid crystal screen to be measured by using the spectroradiometer.
S122: and the control unit receives second spectrum data output by the spectroradiometer.
In this embodiment, as shown in fig. 4, the receiving unit connected to the spectroradiometer receives the second spectrum data output by the spectroradiometer, i.e. the spectrum data in fig. 4, and sends the second spectrum data to the control unit. It should be noted that fig. 4 only shows the spectrum data of the lcd panel to be tested in the wavelength range of 380nm to 450nm, and those skilled in the art can obtain the spectrum data of the led in the wavelength range of 380-780nm according to the above operations, which is not described herein again.
S13: and the control unit calculates the color coordinate of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data.
In this embodiment, the obtaining, by the control unit, the color coordinate of the liquid crystal screen to be detected through calculation specifically includes:
s131: and the control unit respectively calculates the tristimulus values of red, green and blue of the liquid crystal screen to be tested according to the first spectral data, the second spectral data and the standard chromaticity color matching function.
In this embodiment, the control unit obtains the values of the color matching function X, Y, Z in the wavelength range of 380nm-780nm from the standard chromaticity color matching function. As shown in fig. 5 and 6, the standard chromaticity color matching function (CIE1931) is a mathematically defined color space defined by the international commission on illumination (CIE), and color matching functions are defined according to different wavelengths.
Considering that the chromaticity perceived by the human eye is the result of the combined action of the color matching functions, the first spectral data and the second spectral data, the control unit directly obtains the color matching functions CIE-X, CIE-Y and CIE-Z, i.e. the corresponding data in fig. 5 and 6, from the measured wavelengths of 380nm-780 nm. It should be noted that fig. 6 only shows the color matching function values of the wavelength range from 380nm to 450nm, and those skilled in the art can obtain the color matching function values of the wavelengths from 380nm to 780nm, which will not be described herein again. The control unit respectively calculates the red, green and blue spectral power distributions LED-R, LED-G and LED-B of the light emitting diode according to the first spectral data; the control unit respectively calculates the red, green and blue spectral power distributions CF-R, CF-G and CF-B of the liquid crystal screen to be tested according to the first spectral data; and the control unit respectively calculates the tristimulus values of red, green and blue of the liquid crystal screen to be tested according to the following formula.
The tristimulus values for red are:
R-X＝CIE-X*CF-R*LED-R；
R-Y＝CIE-Y*CF-R*LED-R；
R-Z＝CIE-Z*CF-R*LED-R；
in this example, the tristimulus values R-X, R-Y and R-Z of red are the sum of the spectral radiances of visible light of 380nm to 780nm, respectively.
The tristimulus values for green are:
G-X＝CIE-X*CF-G*LED-G；
G-Y＝CIE-Y*CF-G*LED-G；
G-Z＝CIE-Z*CF-G*LED-G；
similarly, the tristimulus values G-X, G-Y and G-Z of green are the sum of the spectral radiance of the visible light of 380nm-780nm respectively.
The tristimulus values for blue are:
B-X＝CIE-X*CF-B*LED-B；
B-Y＝CIE-Y*CF-B*LED-B；
B-Z＝CIE-Z*CF-B*LED-B；
similarly, the tristimulus values G-X, G-Y and G-Z of green are the sum of the spectral radiance of the visible light of 380nm-780nm respectively.
To this end, as shown in fig. 7, the control unit calculates the tristimulus values of red, green and blue of the liquid crystal screen to be measured according to the first spectral data, the second spectral data and the standard chromaticity color matching function, respectively, and specific data are shown in fig. 7. For convenience of illustration, fig. 7 only shows data in the wavelength range of 380nm to 450nm, and those skilled in the art can obtain tristimulus values of red, green and blue at wavelengths of 380nm to 780nm according to the above steps, and will not be described herein again.
S132: the control unit calculates color coordinates of red, green, and blue based on the tristimulus values of red, green, and blue, respectively.
In the present embodiment, the control unit calculates the color coordinates of red, green, and blue, respectively, according to the following formulas based on the tristimulus values of red, green, and blue acquired in the above steps:
red color coordinate R (X, Y), wherein X ═ R-X/(R-X + R-Y + R-Z); y ═ R-Y/(R-X + R-Y + R-Z);
green color coordinates G (X, Y), where X ═ G-X/(G-X + G-Y + G-Z); y ═ G-Y/(G-X + G-Y + G-Z);
blue color coordinate B (X, Y), wherein X ═ B-X/(B-X + B-Y + B-Z); y ═ B-Y/(B-X + B-Y + B-Z).
S133: and the control unit calculates the color coordinates of the liquid crystal screen to be detected according to the red, green and blue color coordinates.
In this embodiment, the control unit calculates the color coordinates of the liquid crystal panel to be measured, i.e., the white point color coordinates W (x, y) of the liquid crystal panel, according to the color coordinates of red, green, and blue obtained in the above steps and according to the following formula:
W-X＝R-X+G-X+B-X；
W-Y＝R-Y+G-Y+B-Y；
W-Z＝R-Z+G-Z+B-Z；
white point color coordinates W (X, Y), where X ═ W-X/(W-X + W-Y + W-Z); and Y is W-Y/(W-X + W-Y + W-Z).
To this end, as shown in fig. 8, the control unit calculates color coordinates of red, green and blue according to the tristimulus values of red, green and blue, respectively, and calculates color coordinates (i.e. white point color coordinates) of the liquid crystal panel to be measured according to the color coordinates of red, green and blue, and specific data are as shown in fig. 8.
S14: and the control unit calculates the color temperature of the liquid crystal screen to be detected according to the color coordinates of the liquid crystal screen to be detected.
In this embodiment, the control unit calculates the color temperature CCT of the liquid crystal screen to be measured according to the color coordinates of the liquid crystal screen to be measured, which are obtained in the above steps, and the following formula.
Color temperature CCT ═ f (Wx, Wy) ═ k × n3+ l × n2+ m × n + g;
in this embodiment, the coefficients are directly calculated by color coordinates by using an mccarmy approximation formula method, so that the calculation complexity can be effectively simplified, and the specific values of the coefficients are: k is 437; 3601; and m is 6831 and g is 5517. It should be noted that, the color temperature calculation method is not limited in the present application, and conventional interpolation methods, black body radiation trajectory fitting methods, and other methods may also be adopted, and a person skilled in the art may select an appropriate coefficient according to an actual application scenario to implement accurate calculation of the color temperature as a design criterion, which is not described herein again.
S15: and the control unit calculates the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data.
In this embodiment, the control unit obtains the output spectral power distribution of the liquid crystal display to be measured through calculation, and the specific calculation steps are as follows:
s151: and the control unit respectively calculates second stimulus values of red, green and blue of the liquid crystal screen to be tested according to the first spectrum data, the second spectrum data and the standard chromaticity color matching function.
In this embodiment, for convenience of description, the red, green and blue second stimulus values of the lcd panel to be tested in the above calculation steps are directly used, where the red second stimulus value is R-Y, the green second stimulus value is G-Y, and the blue second stimulus value is B-Y.
S152: and the control unit calculates the output spectral power distribution of the liquid crystal screen to be tested according to the red, green and blue second stimulus values of the liquid crystal screen to be tested.
In this embodiment, according to the research of international authoritative ophthalmic institution, if the blue light in the 415-455 waveband is harmful blue light, the calculation method of the blue light proportion is defined as the power sum of 415-455nm divided by the power sum of 380-780nm and y (λ), and specifically, the control unit calculates the power distribution L (λ) of the outgoing spectrum of the liquid crystal screen to be measured according to the following formula:
L(λ)＝(R-Y+G-Y+B-Y)/y(λ)。
s2: and the control unit judges whether the liquid crystal screen to be tested meets the preset blue light requirement or not according to the color temperature and the output screen spectral power distribution.
Different low blue light standards are made in consideration of different mechanisms, and the low blue light standard can be judged and adjusted according to different low blue light standards. For the convenience of describing the tuning method of the present application, the following low blue light standard is used as an example: the judgment conditions of the color temperature are as follows: 5500K to 7000K; the judgment conditions of the output spectral power distribution are as follows: the power of 415-455nm band and/380-780 nm is less than 20%.
And if the judgment results of the color temperature and the output screen spectral power distribution meet the standard, the liquid crystal screen to be detected meets the low blue light requirement without adjustment.
Otherwise, when the judgment results of the color temperature and the output spectral power distribution do not meet the standard, executing the following steps:
s3: and the control unit controls the adjusting unit to adjust the red gain, the green gain and the blue gain of the liquid crystal screen to be detected, recalculates the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain, and jumps to S2 for re-judgment.
The red gain, the green gain and the blue gain of the liquid crystal screen to be detected are parameters for adjusting the light output quantity of the liquid crystal screen system, and the control unit controls the adjusting unit to adjust the red gain, the green gain and the blue gain so as to realize white balance adjustment of the liquid crystal screen to be detected. In this embodiment, the red GAIN, the green GAIN, and the blue GAIN correspond to values of R-GAIN, G-GAIN, and B-GAIN, respectively, in the display factory menu, and the adjustment of the red GAIN, the green GAIN, and the blue GAIN is achieved by adjusting the red GAIN coefficient, the green GAIN coefficient, and the blue GAIN coefficient. The adjustment range of the red gain coefficient, the green gain coefficient and the blue gain coefficient is 0-1, the red gain, the green gain and the blue gain are represented according to different display bits, and the more the display bits are used, the higher the color gain is. In this embodiment, the color gain is represented by 8 bits, and the adjustment range of the color gain is 0-255, for example, when the red gain coefficient is 0.8, the red gain is 255 × 0.8 — 204. Specifically, the red gain of the current liquid crystal screen to be tested is as follows: and the green gain is 0.96, the green gain is 1, and the blue gain is 1, according to the low blue light requirement, the adjusting unit respectively adjusts the green gain and the blue gain of the liquid crystal screen to be tested, the green gain coefficient is adjusted to be 0.98, the blue gain coefficient is adjusted to be 0.85, namely the green gain is adjusted to be 250, and the blue gain is adjusted to be 217. Because the adjustment of the red gain, the green gain and the blue gain of the liquid crystal screen to be detected affects the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected, the control unit respectively calculates the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the linear and nonlinear relations between the color gain of the liquid crystal screen to be detected and the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected. And then, judging again according to the adjusted color coordinate, color temperature and output spectral power distribution of the liquid crystal screen to be detected until the liquid crystal screen to be detected meets the low blue light standard.
And then, completing the low blue light adjustment of the liquid crystal screen to be tested.
Corresponding to the blue light adjusting method provided in the foregoing embodiment, an embodiment of the present application further provides a blue light adjusting device, and since the blue light adjusting device provided in the embodiment of the present application corresponds to the blue light adjusting methods provided in the foregoing embodiments, the foregoing embodiment is also applicable to the blue light adjusting device provided in the embodiment, and will not be described in detail in the embodiment.
As shown in fig. 2, an embodiment of the present application provides a blue light adjusting apparatus, which includes a receiving unit, a control unit, and an adjusting unit, wherein the receiving unit is configured to receive first spectral data of a light emitting diode of a liquid crystal panel to be tested and second spectral data of the liquid crystal panel to be tested; the control unit is configured to calculate the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data, judge whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, and output a judgment result; and the adjusting unit is configured to adjust the red gain, the green gain and the blue gain of the liquid crystal screen to be detected according to the judgment result, and recalculate the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain.
In an optional embodiment, the control unit is further configured to control the integrating sphere and the spectrum analyzer to measure the light emitting diode of the liquid crystal screen to be measured, and control the spectroradiometer to measure the liquid crystal screen to be measured.
Another embodiment of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements: s1: receiving first spectrum data of a light emitting diode of a liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating color coordinates, color temperature and output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data; s2: judging whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, if not, jumping to S3, otherwise, ending the adjustment; s3: and adjusting the red gain, the green gain and the blue gain of the liquid crystal screen to be detected, recalculating the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain, and jumping to S2.
In practice, the computer-readable storage medium may take any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present embodiment, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
As shown in fig. 9, another embodiment of the present invention provides a schematic structural diagram of a computer device. The computer device 12 shown in fig. 9 is only an example and should not bring any limitations to the function and scope of use of the embodiments of the present invention.
As shown in FIG. 9, computer device 12 is in the form of a general purpose computing device. The components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.
The system memory 28 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM)30 and/or cache memory 32. Computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 9, and commonly referred to as a "hard drive"). Although not shown in FIG. 9, a magnetic disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the invention.
A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally carry out the functions and/or methodologies of the described embodiments of the invention.
The processor unit 16 executes various functional applications and data processing by executing programs stored in the system memory 28, for example, to implement a blue light adjustment method provided by the embodiment of the present invention.
Aiming at the existing problems, the invention provides a blue light adjusting method, a blue light adjusting device, computer equipment and a medium, the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected are calculated by measuring the first spectral data and the second spectral data of the liquid crystal screen to be detected, whether the liquid crystal screen to be detected meets the preset blue light requirement or not is judged according to the color temperature and the output spectral power distribution, if not, the red gain, the green gain and the blue gain of the liquid crystal screen to be detected are adjusted, so that the liquid crystal screen to be detected meets the preset blue light requirement, the problems in the prior art are solved, the blue light of the liquid crystal screen can be quickly adjusted, and the blue light adjusting device has a wide application prospect.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. A method for blue light adjustment, comprising:
s1: receiving first spectrum data of a light emitting diode in a backlight source of a liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating color coordinates, color temperature and output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data;
s2: judging whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, if not, jumping to S3, otherwise, ending the adjustment;
s3: and adjusting the red gain, the green gain and the blue gain of the liquid crystal screen to be detected, recalculating the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain, and jumping to S2.
2. The blue light adjustment method according to claim 1, wherein the step of S1: receiving first spectrum data of a light emitting diode in a backlight source of the liquid crystal screen to be detected and second spectrum data of the liquid crystal screen to be detected, and calculating color coordinates, color temperature and output spectrum power distribution of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data further comprises:
s11: receiving first spectrum data of a light emitting diode in a backlight source of a liquid crystal screen to be detected;
s12: receiving second spectrum data of the liquid crystal screen to be detected;
s13: calculating the color coordinate of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data;
s14: calculating the color temperature of the liquid crystal screen to be detected according to the color coordinates of the liquid crystal screen to be detected;
s15: and calculating the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data.
3. The blue light adjustment method according to claim 2, wherein the step of S13: calculating the color coordinate of the liquid crystal screen to be detected according to the first spectrum data and the second spectrum data further comprises:
s131: respectively calculating the tristimulus values of red, green and blue of the liquid crystal screen to be detected according to the first spectral data, the second spectral data and the standard chromaticity color matching function;
s132: calculating color coordinates of red, green and blue according to the tristimulus values of red, green and blue respectively;
s133: and calculating the color coordinates of the liquid crystal screen to be detected according to the red, green and blue color coordinates.
4. The blue light adjustment method according to claim 2, wherein the step of S15: calculating the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data further comprises:
s151: respectively calculating second stimulus values of red, green and blue of the liquid crystal screen to be tested according to the first spectrum data, the second spectrum data and a standard chromaticity color matching function;
s152: and calculating the output spectral power distribution of the liquid crystal screen to be tested according to the red, green and blue second stimulus values of the liquid crystal screen to be tested.
5. The blue light adjustment method according to claim 2, wherein the step of S11: receiving first spectral data of a light emitting diode in a backlight source of a liquid crystal screen to be tested further comprises:
s111: controlling an integrating sphere and a spectrum analyzer to measure a light emitting diode in a backlight source of the liquid crystal screen to be measured;
s112: first spectral data output by the spectral analyzer is received.
6. The blue light adjustment method according to claim 2, wherein the step of S12: receiving the second spectrum data of the liquid crystal screen to be tested further comprises:
s121: controlling a spectral radiometer to measure the liquid crystal screen to be measured;
s122: and receiving second spectral data output by the spectroradiometer.
7. A blue light adjusting device is characterized by comprising a receiving unit, a control unit and an adjusting unit, wherein,
the receiving unit is configured to receive first spectrum data of a light emitting diode in a backlight source of a liquid crystal screen to be tested and second spectrum data of the liquid crystal screen to be tested;
the control unit is configured to calculate the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the first spectral data and the second spectral data, judge whether the liquid crystal screen to be detected meets the preset blue light requirement or not according to the color temperature and the output spectral power distribution, and output a judgment result;
and the adjusting unit is configured to adjust the red gain, the green gain and the blue gain of the liquid crystal screen to be detected according to the judgment result, and recalculate the color coordinate, the color temperature and the output spectral power distribution of the liquid crystal screen to be detected according to the adjusted red gain, green gain and blue gain.
8. The blue light adjusting device according to claim 7, wherein the control unit is further configured to control the integrating sphere and the spectrum analyzer to measure the light emitting diode of the liquid crystal panel under test, and control the spectroradiometer to measure the liquid crystal panel under test.
9. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-6.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method according to any of claims 1-6 when executing the program.
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| CN112820248B (en) * | 2021-02-07 | 2023-01-10 | 峰米(北京)科技有限公司 | White balance adjusting method, system, storage medium and electronic equipment |
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| CN106162981A (en) * | 2016-05-22 | 2016-11-23 | 上海大学 | Light mixing method based on three-primary color LED |
| CN109507833A (en) * | 2019-01-16 | 2019-03-22 | 四川长虹电器股份有限公司 | The debugging and picture quality regulation method of equipment with low blue light liquid crystal display |
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| WO2017131699A1 (en) * | 2016-01-28 | 2017-08-03 | Ecosense Lighting Inc | Systems for providing tunable white light with high color rendering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106162981A (en) * | 2016-05-22 | 2016-11-23 | 上海大学 | Light mixing method based on three-primary color LED |
| CN109507833A (en) * | 2019-01-16 | 2019-03-22 | 四川长虹电器股份有限公司 | The debugging and picture quality regulation method of equipment with low blue light liquid crystal display |
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