WO2022141881A1 - 一种用于led拼接显示屏校准的色度测量方法及装置 - Google Patents

一种用于led拼接显示屏校准的色度测量方法及装置 Download PDF

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Publication number
WO2022141881A1
WO2022141881A1 PCT/CN2021/084397 CN2021084397W WO2022141881A1 WO 2022141881 A1 WO2022141881 A1 WO 2022141881A1 CN 2021084397 W CN2021084397 W CN 2021084397W WO 2022141881 A1 WO2022141881 A1 WO 2022141881A1
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Prior art keywords
light beam
light
display screen
dimensional lattice
fiber array
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PCT/CN2021/084397
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English (en)
French (fr)
Inventor
欧昌东
郑增强
罗时文
洪志坤
汪舟
钟凡
刘璐宁
冯晓帆
刘荣华
沈亚非
陈凯
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武汉精测电子集团股份有限公司
武汉精立电子技术有限公司
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Application filed by 武汉精测电子集团股份有限公司, 武汉精立电子技术有限公司 filed Critical 武汉精测电子集团股份有限公司
Priority to US17/997,205 priority Critical patent/US20230314223A1/en
Priority to KR1020227036595A priority patent/KR20220156067A/ko
Priority to JP2022561503A priority patent/JP7444352B2/ja
Publication of WO2022141881A1 publication Critical patent/WO2022141881A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/506—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors measuring the colour produced by screens, monitors, displays or CRTs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/501—Colorimeters using spectrally-selective light sources, e.g. LEDs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0208—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0218—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers
    • G01J3/0221—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using optical fibers the fibers defining an entry slit
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0248—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using a sighting port, e.g. camera or human eye
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/2823—Imaging spectrometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts
    • G01J3/524—Calibration of colorimeters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • 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
    • G09G3/20—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
    • G09G3/22—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 using controlled light sources
    • G09G3/30—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 using controlled light sources using electroluminescent panels
    • G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J2003/2866—Markers; Calibrating of scan
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems

Definitions

  • the application relates to the technical field of colorimeters, and in particular to a colorimetric measurement method and device for calibrating an LED splicing display screen.
  • Inorganic LEDs Light Emitting Diode
  • GaN gallium nitride
  • Inorganic LEDs have the advantage of long service life, but due to their narrow emission spectral lines, it is difficult for the semiconductor process to ensure that the center spectral line and spectral width are exactly the same, resulting in manufacturing
  • the display is large, the color is prone to deviation, and it is necessary to adjust the color.
  • the premise of the adjustment of selected colors is accurate color measurement, and the large LED display is made up of multiple displays, and the spectrum of each display is quite different.
  • one case is a rotary imaging colorimeter using an XYZ filter, but due to the poor accuracy of the XYZ filter and the narrow spectral line of the LED, the measurement error is large; the other In the other case, the spectral information of the center point is measured by single-point spectrometer measurement, and the center point is used for calibration, but the spectrum of other regions cannot be easily measured, resulting in large measurement errors in other regions except the center region.
  • the present application provides a chromaticity measurement method and device for calibrating an LED splicing display screen.
  • Partially transparent and partly reflective mirrors are used to separate outgoing light.
  • an imaging sensor is used for analysis
  • a spectrometer is used for chromaticity measurement and Spectral measurement, based on the measurement results of the spectrometer, calibrates and corrects the imaging sensor, and has the advantages of low cost, convenient operation and accurate measurement.
  • the present application provides a chromaticity measurement method for LED splicing display calibration
  • the chromaticity measurement method for LED splicing display calibration includes the following steps:
  • a partially transparent and partially reflecting lens to receive the light beam from the objective lens and split the beam to obtain a first light beam and a second light beam
  • a movable optical fiber array coupling device to receive the second light beam in the form of a two-dimensional lattice, and convert the received second light beam into a one-dimensional lattice light
  • the chromaticity information and spectral information of multiple regions on the LED mosaic display screen are obtained according to the one-dimensional lattice light by using a spectrum obtaining device.
  • the imaging sensor is located on the imaging plane of the first light beam, and the optical fiber array coupling device is configured to be movably disposed on the conjugate image plane of the second light beam.
  • the LED splicing display screen is formed by splicing a plurality of sub-display screens
  • the movable optical fiber array coupling device When the movable optical fiber array coupling device is used to receive the second light beam in the form of a two-dimensional lattice, and convert the two-dimensional lattice light into a one-dimensional lattice light, the following steps are also included:
  • the optical fiber array coupling device is moved, and the optical fiber array coupling device is registered with the plurality of sub-display screens, so that the optical fiber array coupling device can simultaneously obtain chromaticity information and spectral information of multiple target areas.
  • the LED splicing display screen is formed by splicing a plurality of sub-display screens
  • the movable optical fiber array coupling device When the movable optical fiber array coupling device is used to receive the second light beam in the form of a two-dimensional lattice, and convert the two-dimensional lattice light into a one-dimensional lattice light, the following steps are also included:
  • moving the optical fiber array coupling device multiple times to acquire the chromaticity information and spectral information of the target sub-display screen each time the optical fiber array coupling device is moved, until each sub-display screen is acquired at least once Chromaticity information and spectral information including the following steps:
  • the optical fiber array coupling device is moved multiple times according to the distance and the number of times, until each of the sub-display screens acquires chromaticity information and spectral information at least once.
  • the method also includes the following steps:
  • the original image is calibrated according to the calibration matrix.
  • the present application provides a chromaticity measurement device for calibrating an LED splicing display screen, the device comprising:
  • an objective lens which is used to image the outgoing light of the LED splicing display
  • a partially transparent and partially reflecting lens which is used for splitting the light beam received from the objective lens to obtain a first light beam and a second light beam;
  • an imaging sensor for imaging according to the first light beam
  • an optical fiber array coupling device which is movably arranged at the exit end of the second light beam, and is used for collecting the second light beam in the form of a two-dimensional lattice, and converting the received second light beam into a one-dimensional lattice light ;
  • a spectrum acquisition device which is used for acquiring chromaticity information and spectrum information of multiple regions on the LED splicing display screen according to the one-dimensional lattice light.
  • the imaging sensor is located on the imaging plane of the first light beam, and the optical fiber array coupling device is configured to be movably disposed on the conjugate image plane of the second light beam.
  • the optical fiber array coupling device includes a point scanning component, which is used to collect the second light beam in the form of a two-dimensional lattice, obtain the two-dimensional lattice light, and convert the two-dimensional lattice light into all the The one-dimensional lattice light is emitted.
  • a point scanning component which is used to collect the second light beam in the form of a two-dimensional lattice, obtain the two-dimensional lattice light, and convert the two-dimensional lattice light into all the The one-dimensional lattice light is emitted.
  • the point scanning component includes:
  • One ends of the plurality of the light guide components are arranged in a two-dimensional lattice form for collecting the second light beam to obtain the two-dimensional lattice light;
  • the other ends of the plurality of light guide components are arranged in a straight line, so as to convert the two-dimensional lattice light into one-dimensional lattice light for output.
  • the partially transparent and partially reflective mirrors are used to separate the outgoing light
  • the imaging sensor is used for analysis
  • the imaging spectrometer is used for chromaticity measurement and spectral measurement
  • the movable design method makes the imaging spectrometer easy and convenient
  • the chromaticity measurement and spectral measurement of the outgoing light of the LED display screen in multiple target areas are carried out, and by moving the fiber array coupling device many times, it is ensured that each small screen can be measured at least once, so that it can adapt to any
  • the imaging sensor is calibrated and corrected, which has the advantages of low cost, convenient operation and accurate measurement.
  • FIG. 1 is a flow chart of steps of a colorimetric measurement method for calibrating an LED splicing display screen provided by an embodiment of the present application
  • FIG. 2 is a schematic structural diagram of a chromaticity measurement device for calibrating an LED splicing display screen provided by an embodiment of the present application
  • FIG. 3 is a schematic working diagram of the optical fiber array coupling device and the spectrum acquisition device of the colorimetric measurement device used for the calibration of the LED splicing display screen provided by the embodiment of the application;
  • FIG. 4 is a schematic moving diagram of a fiber array coupling device of a colorimetric measuring device used for calibrating an LED splicing display screen provided by an embodiment of the application;
  • FIG. 5 is a schematic diagram of the collection operation of the optical fiber array coupling device of the colorimetric measurement device used for the calibration of the LED splicing display screen provided by the embodiment of the application;
  • FIG. 6 is a schematic structural diagram of an optical fiber array coupling device of a colorimetric measuring device used for calibrating an LED splicing display screen provided by an embodiment of the present application;
  • Point scanning assembly 400, Light guide part; , collimating mirror; 511, dispersion component; 512, focusing mirror; 52, imaging analysis component; A, LED splicing display screen; A1, No. 1 sub-display; A2, No. 2 sub-display; B, fiber array coupling device Collection point.
  • the embodiments of the present application provide a chromaticity measurement method and device for calibrating an LED splicing display screen.
  • Partially transparent and partially reflective mirrors are used to separate outgoing light.
  • an imaging sensor is used for analysis
  • a spectrometer is used for chromaticity Measurement and spectral measurement
  • the movable design method enables the spectrometer to easily perform chromaticity measurement and spectral measurement on the outgoing light of the LED display in different areas. Based on the measurement results of the spectrometer, the imaging sensor is calibrated and corrected. The advantages of low cost, convenient operation and accurate measurement.
  • a chromaticity measurement method for LED splicing display calibration includes the following steps:
  • an embodiment of the present application provides a chromaticity measurement method for calibrating an LED splicing display screen.
  • the method includes the following steps:
  • the moving direction of the fiber array coupling device 4 is perpendicular to the exit end of the second light beam
  • the plane of the receiving end of the fiber array coupling device 4 is perpendicular to the exit end of the second light beam.
  • the imaging sensor 3 may specifically be an RGB imaging sensor, which is used to receive the first light beam to obtain a corresponding RGB image.
  • the input light is divided into two paths, one is transmitted to the imaging sensor 3, and the other is transmitted to the spectrum acquisition device 5, and the spectrum acquisition device 5 measures and obtains the LED splicing display screen according to the one-dimensional lattice light.
  • the chromaticity information and spectral information of the above multiple regions are used to calibrate and correct the imaging sensor 3;
  • Partially transparent and partially reflective mirrors are used to separate the outgoing light.
  • the imaging sensor 3 is used for analysis, and on the other hand, the spectrum acquisition device 5 is used for chromaticity measurement.
  • the chromaticity information and spectral information of the outgoing light of the LED splicing display screens in different target areas are obtained. 3. To calibrate and correct, it has the advantages of low cost, convenient operation and accurate measurement.
  • the objective lens 1 images the outgoing light of the LED splicing display screen, and the partially transparent and partially reflecting lens 2 partially transmits the imaging of the objective lens 1 to obtain the first beam and partially reflects to obtain the second beam; of course, the first beam
  • the light beam may be obtained by reflection
  • the second light beam may be obtained by transmission.
  • the first light beam is obtained by transmission and the second light beam is obtained by reflection as an example for description.
  • the imaging sensor 3 receives and analyzes the first light beam
  • a movable optical fiber array coupling device 4 arranged at the exit end of the second light beam of the partially transparent and partially reflecting lens 2 is used to collect the second light beam in the form of a two-dimensional lattice and convert the light of the two-dimensional lattice into a one-dimensional lattice light.
  • the imaging sensor 3 is located on the imaging plane of the first light beam, and the fiber array coupling device 4 is configured to be movably disposed on the conjugate image plane of the second light beam;
  • the two-dimensional lattice of the optical fiber array coupling device 4 can be in the form of M*N, and the translation on the conjugate image plane can be realized by devices such as displacement motors or piezoelectric ceramics, and the multi-block display of the LED display screen can be spliced with the tested LED. Display screen registration. Through the registration operation, the optical fiber array coupling device can collect the spectral information and chromaticity information of the measurement target area each time, and the target area can be the central area of multiple target sub-display screens.
  • the optical fiber array coupling device when it is necessary to measure the chromaticity information and spectral information of one or more target sub-displays at the same time, move the optical fiber array coupling device, and register the optical fiber array coupling device with multiple sub-displays of the LED splicing display screen, so that the The two-dimensional lattice of the array coupling device 4 simultaneously collects and measures the chromaticity information and spectral information of one or more target sub-display screens.
  • spectral measurement and colorimetric measurement of multiple sub-displays integrated rapid measurement is achieved, and rapid color calibration measurement of each sub-display is realized.
  • moving the optical fiber array coupling device 4 can collect sub-display screens in different areas
  • the dot matrix form of the fiber array coupling device 4 is set so that light from multiple sub-display screens can be collected.
  • the lattice form of the fiber array coupling device 4 can be adjusted if needed, and the lattice form of the fiber array coupling device 4 can also be used to collect light from a sub-display screen, which can be adjusted according to usage requirements.
  • the LED splicing display is formed by splicing multiple sub-displays.
  • the fiber array coupling device 4 can be moved to register the fiber array coupling device 4 with multiple sub-display screens, so that the fiber array coupling device 4 can simultaneously obtain chromaticity information and spectral information of multiple target areas.
  • the optical fiber array coupling device 4 can be moved multiple times to acquire the chromaticity information and spectral information of the target sub-display screen each time the optical fiber array coupling device 4 is moved, until the chromaticity information of each sub-display screen is acquired at least once information and spectral information.
  • moving the fiber array coupling device 4 multiple times until each sub-display screen acquires chromaticity information and spectral information at least once including the following steps:
  • Fig. 5 is a specific implementation of the above embodiment. Assuming that the two-dimensional lattice of the optical fiber array coupling device adopts the form of 3*3, and the splicing display screen is a splicing screen of 4*4, the optical fiber array coupling can be moved 4 times.
  • the device to obtain the spectral information of all sub-displays for example, move the fiber array coupling device for the first time so that it can obtain the spectral information of 9 sub-displays in the upper left corner of the splicing screen 3*3, and move the fiber array coupling device for the second time , so that it can obtain the spectral information of 9 sub-displays of 3*3 in the upper right corner of the splicing screen, move the fiber array coupling device for the third time, so that it can obtain the spectral information of 9 sub-displays of 3*3 in the lower left corner of the splicing screen, and the fourth Move the fiber array coupling device twice so that it can obtain the spectral information of 9 sub-displays in the lower right corner of the splicing screen 3*3, so that each sub-display can be measured at least once by moving the fiber array coupling device 4 times.
  • the method also includes the following steps:
  • the calibration matrix of the corresponding area of the LED splicing display is obtained;
  • GRB images are calibrated according to the calibration matrix.
  • a calibration matrix is obtained according to the chromaticity information obtained by the spectrometer measurement, that is, the standard chromaticity information and the original image information obtained by the color camera, and then the calibration matrix is used to calibrate the original image obtained by the color camera.
  • the area corresponding to the LED splicing display screen specifically refers to the sub-display on the LED splicing display screen corresponding to the second light beam collected by the fiber array coupling device 4 .
  • an embodiment of the present application further provides a chromaticity measuring device for calibrating an LED splicing display screen, and the chromaticity measuring device is used to implement the LED splicing display mentioned in the first aspect.
  • a chromaticity measurement method for screen calibration, the chromaticity measurement device comprising:
  • the objective lens 1 is used to image the outgoing light of the LED splicing display screen
  • Partially transparent and partially reflecting mirror 2 which is used for splitting the light beam received from the objective lens 1 to obtain a first light beam and a second light beam;
  • an imaging sensor 3 for imaging according to the first light beam
  • an optical fiber array coupling device 4 movably disposed at the exit end of the second light beam, for collecting the second light beam in the form of a two-dimensional lattice, and converting the received second light beam into a one-dimensional lattice light;
  • Spectral acquisition device 5 which is used for acquiring chromaticity information and spectral information of multiple regions on the LED splicing display screen according to one-dimensional lattice light.
  • the moving direction of the fiber array coupling device 4 is perpendicular to the exit end of the second light beam
  • the plane of the receiving end of the fiber array coupling device 4 is perpendicular to the exit end of the second light beam.
  • the imaging sensor 3 may specifically be an RGB imaging sensor, which is used to receive the first light beam to obtain a corresponding RGB image.
  • component A is an LED splicing display screen
  • the LED splicing display is spliced by multiple sub-displays.
  • the input light is divided into two paths, one is transmitted to the imaging sensor 3, and the other is transmitted to the spectrum acquisition device 5, and the spectrum acquisition device 5 measures and obtains the LED splicing display screen according to the one-dimensional lattice light.
  • the chromaticity information and spectral information of the above multiple regions are used to calibrate and correct the imaging sensor 3;
  • Partially transparent and partially reflective mirrors are used to separate the outgoing light.
  • the imaging sensor 3 is used for analysis, and on the other hand, the spectrum acquisition device 5 is used for chromaticity measurement and spectral measurement. It is convenient to perform chromaticity measurement and spectral measurement on the outgoing light of the LED splicing display screen in different target areas, and obtain the chromaticity information and spectral information of multiple areas on the LED splicing display screen based on the spectrum acquisition device 5 according to the one-dimensional lattice light.
  • the calibration and correction of the imaging sensor 3 has the advantages of low cost, convenient operation and accurate measurement.
  • the objective lens 1 images the outgoing light of the LED splicing display screen, and the partially transparent and partially reflecting lens 2 partially transmits the imaging of the objective lens 1 to obtain the first beam and partially reflects to obtain the second beam; of course, the first beam
  • the light beam may be obtained by reflection
  • the second light beam may be obtained by transmission.
  • the first light beam is obtained by transmission and the second light beam is obtained by reflection as an example for description.
  • the imaging sensor 3 receives and analyzes the first light beam
  • a movable optical fiber array coupling device 4 arranged at the exit end of the second light beam of the partially transparent and partially reflecting lens 2 is used to collect the second light beam in the form of a two-dimensional lattice and convert the light of the two-dimensional lattice into a one-dimensional lattice light.
  • the imaging sensor 3 is located on the imaging plane of the first light beam, and the fiber array coupling device 4 is configured to be movably disposed on the conjugate image plane of the second light beam;
  • the two-dimensional lattice of the optical fiber array coupling device 4 can be in the form of M*N, and the translation on the conjugate image plane can be realized by devices such as displacement motors or piezoelectric ceramics, and the multi-block display of the LED display screen can be spliced with the tested LED.
  • Display screen registration, through the registration operation, the optical fiber array coupling device can collect the chromaticity information and spectral information of the target area each time, and the target area can be the central area of multiple target sub-display screens.
  • the optical fiber array coupling device when it is necessary to measure the chromaticity information and spectral information of one or more target sub-displays at the same time, move the optical fiber array coupling device, and register the optical fiber array coupling device with multiple sub-displays of the LED splicing display screen, so that the The two-dimensional lattice of the array coupling device 4 simultaneously collects chromaticity information and spectral information of one or more target sub-display screens.
  • chromaticity measurement and spectral measurement of multiple sub-displays integrated rapid measurement can be achieved, and rapid color calibration measurement of each sub-display can be achieved;
  • each sub-display When moving, by analyzing the number of sub-displays in the tested LED splicing display, calculate the distance and times to be moved, and ensure that each sub-display can obtain chromaticity information and spectral information at least once, so as to ensure that the chromaticity information and spectral information can be obtained at least once. Colorimetric and spectral measurements for any number of LED splicing displays.
  • moving the fiber array coupling device 4 can collect sub-display screens in different areas
  • the dot matrix form of the optical fiber array coupling device 4 is set, so that light from multiple sub-display screens can be collected.
  • the lattice form of the fiber array coupling device 4 can be adjusted if needed, and the lattice form of the fiber array coupling device 4 can also be used to collect light from a sub-display screen, which can be adjusted according to usage requirements.
  • the fiber array coupling device 4 can be moved to register the fiber array coupling device 4 with multiple sub-display screens, so that the fiber array coupling device 4 can simultaneously obtain chromaticity information and spectral information of multiple target areas.
  • the optical fiber array coupling device 4 can be moved multiple times to acquire the chromaticity information and spectral information of the target sub-display screen each time the optical fiber array coupling device 4 is moved, until the chromaticity information of each sub-display screen is acquired at least once information and spectral information.
  • the fiber array coupling device 4 includes a point scanning component 40 for collecting the second light beam in the form of a two-dimensional lattice to obtain a two-dimensional lattice light, and converts the two-dimensional lattice light into a one-dimensional lattice light for output.
  • a point scanning component 40 for collecting the second light beam in the form of a two-dimensional lattice to obtain a two-dimensional lattice light, and converts the two-dimensional lattice light into a one-dimensional lattice light for output.
  • the point scanning component 40 includes:
  • One ends of the plurality of light guide components 400 are arranged in a two-dimensional lattice form for collecting the second light beam to obtain a two-dimensional lattice light;
  • the other ends of the plurality of light guide members 400 are arranged in a straight line, so as to convert the two-dimensional lattice light into one-dimensional lattice light for output.
  • the spectrum acquisition device 5 includes:
  • a collimating dispersion component 51 which is used to perform collimation processing, dispersion processing and focusing processing on the one-dimensional lattice light;
  • the imaging analysis component 52 specifically a spectrometer, is used to image and analyze the one-dimensional lattice light that has undergone collimation processing, dispersion processing and focusing processing, so as to obtain spectral information and chromaticity information of the one-dimensional lattice light, and also The spectral information and chromaticity information of the two-dimensional lattice light are obtained.
  • collimating dispersion component 51 includes:
  • a collimating mirror 510 which is used for collimation processing
  • a dispersion component 511 which is used for dispersion processing
  • the focusing mirror 512 is used for focusing processing.
  • the front end of the point scanning component 40 collects light to obtain a two-dimensional lattice light, which is assumed to be arranged in an M*N array, that is, the light in the two-dimensional lattice light is also arranged in an M*N array. Furthermore, the two-dimensional lattice light is emitted in the form of one-dimensional lattice light during the transmission process. Since the light rays in the two-dimensional lattice light are arranged in the form of M*N array, the one-dimensional lattice light is one of 1*MN. dimensional structure;
  • M and N in M*N are positive integers not less than 1;
  • M*N can be 3*3, 4*6, 5*7 or other array structures
  • the front end of the point scanning component 40 can collect light information of 9 spatial points, and the rear end of the point scanning component 40 emits a 9*1 one-dimensional lattice Light.
  • the lattice can be arranged in a rectangle, a circle, or other irregular shapes in space.

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  • Computer Hardware Design (AREA)
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  • Spectrometry And Color Measurement (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
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Abstract

一种用于LED拼接显示屏（A）校准的色度测量方法及装置，色度测量方法包括以下步骤：利用物镜（1）对LED拼接显示屏（A）的出射光进行成像；利用部分通透部分反射镜片（2）从物镜（1）接收光束并进行分束，获得第一光束和第二光束；利用成像传感器（3）接收第一光束，获得原始图像；利用可移动的光纤阵列耦合装置（4）以二维点阵形式接收第二光束，并转换成一维点阵光；利用光谱获取装置（5）根据一维点阵光获得LED拼接显示屏（A）上多个区域的色度信息和光谱信息。对出射光进行分离，利用成像传感器（3）进行分析，利用光谱仪（52）进行色度测量和光谱测量，基于光谱仪（52）的测量结果，对成像传感器（3）进行标定和修正，具有操作便利，测量精确的优势。

Description

一种用于LED拼接显示屏校准的色度测量方法及装置 技术领域
本申请涉及色度计技术领域，具体涉及一种用于LED拼接显示屏校准的色度测量方法及装置。
背景技术
GaN(氮化镓)等无机LED(Light Emitting Diode，发光二极管)具有较长使用寿命的优势，但由于其发光谱线较窄，半导体工艺难以保证中心谱线和谱宽完全一致，导致在制造为大显示屏时颜色容易发生偏差，需要进行颜色的调校。而精选颜色的调校的前提是进行准确的颜色测量，而大LED显示屏是由多块显示屏拼接而成，各块显示屏之间的光谱存在较大差异。
现阶段，一种情况是使用XYZ滤光片的转轮式成像色度计，但由于XYZ滤光片的精准度欠佳，而由于LED的谱线较窄，故而测量误差较大；另一种情况则是采用单点光谱仪测量的方式测量中心点的光谱信息，使用中心点校准，但对于其他区域的光谱无法便利的进行测量，故而导致除中心区域外的其他区域的测量误差较大。
因此，为了满足当前使用需求，急需一种新的色度测量装置。
发明内容
本申请提供一种用于LED拼接显示屏校准的色度测量方法及装置，利用部分通透部分反射镜片对出射光进行分离，一方面利用成像传感器进行分析，一方面利用光谱仪进行色度测量和光谱测量，基于光谱仪的测量结果，对成像传感器进行标定和修正，具有成本低廉，操作便利，测量精确的优势。
第一方面，本申请提供了一种用于LED拼接显示屏校准的色度测量方法，所述用于LED拼接显示屏校准的色度测量方法包括以下步骤：
利用物镜对LED拼接显示屏的出射光进行成像；
利用部分通透部分反射镜片从所述物镜接收光束并进行分束，获得第一光束和第二光束；
利用成像传感器接收所述第一光束，获得原始图像；
利用可移动的光纤阵列耦合装置以二维点阵形式接收所述第二光束，并将接收到的所述第二光束转换成一维点阵光；
利用光谱获取装置根据所述一维点阵光获得所述LED拼接显示屏上多个区域的色度信息和光谱信息。
优选的，所述成像传感器位于所述第一光束的成像面，所述光纤阵列耦合装置被配置成可移动的设置在所述第二光束的共轭像面上。
具体的，所述LED拼接显示屏由多个子显示屏拼接而成；
所述利用可移动的光纤阵列耦合装置以二维点阵形式接收所述第二光束，并将所述二维点阵光转换成一维点阵光时，还包括以下步骤：
移动所述光纤阵列耦合装置，配准所述光纤阵列耦合装置与所述多个子显示屏，使得所述光纤阵列耦合装置能同时获得多个目标区域的色度信息和光谱信息。
进一步的，所述LED拼接显示屏由多个子显示屏拼接而成；
所述利用可移动的光纤阵列耦合装置以二维点阵形式接收所述第二光束，并将所述二维点阵光转换成一维点阵光时，还包括以下步骤：
多次移动所述光纤阵列耦合装置，获取每次移动所述光纤阵列耦合装置时目标子显示屏的色度信息和光谱信息，直至每个所述子显示屏至少被获取一次色度信息和光谱信息。
具体的，所述多次移动所述光纤阵列耦合装置，获取每次移动所述光纤阵列耦合装置时目标子显示屏的色度信息和光谱信息，直至每 个所述子显示屏至少被获取一次色度信息和光谱信息，包括以下步骤：
根据所述子显示屏的个数，计算所述光纤阵列耦合装置需要移动的距离和次数；
根据所述距离和次数多次移动所述光纤阵列耦合装置，直至每个所述子显示屏至少被获取一次色度信息和光谱信息。
进一步的，所述方法还包括以下步骤：
根据所述LED拼接显示屏对应区域的光谱信息以及色度信息，获得LED拼接显示屏对应区域的标定矩阵；
根据所述标定矩阵对所述原始图像校准。
第二方面，本申请提供了一种用于LED拼接显示屏校准的色度测量装置，所述装置包括：
物镜，其用于对LED拼接显示屏的出射光进行成像；
部分通透部分反射镜片，其用于将从所述物镜接收到的光束进行分束，获得第一光束和第二光束；
成像传感器，其用于根据所述第一光束进行成像；
光纤阵列耦合装置，可移动地设置在所述第二光束的出射端，用于以二维点阵形式采集所述第二光束，并将接收到的所述第二光束转换成一维点阵光；
光谱获取装置，其用于根据所述一维点阵光获得所述LED拼接显示屏上多个区域的色度信息和光谱信息。
优选的，所述成像传感器位于所述第一光束的成像面，所述光纤阵列耦合装置被配置成可移动的设置在所述第二光束的共轭像面上。
具体的，所述光纤阵列耦合装置包括点扫描组件，用于以二维点阵形式采集所述第二光束，得到所述二维点阵光，并将所述二维点阵光转换成所述一维点阵光后出射。
具体的，所述点扫描组件包括：
多根光导部件；
多根所述光导部件的一端以二维点阵形式排列，用于采集所述第二光束，得到所述二维点阵光；
多根所述光导部件的另一端呈直线排列，以将所述二维点阵光转换为一维点阵光出射。
本申请提供的技术方案带来的有益效果包括：
本申请利用部分通透部分反射镜片对出射光进行分离，一方面利用成像传感器进行分析，一方面利用成像式光谱仪进行色度测量和光谱测量，并利用可移动的设计方式使得成像式光谱仪能够简便的同时对多个目标区域的LED显示屏的出射光进行色度测量和光谱测量，并且通过多次移动光纤阵列耦合装置，使得确保每块小屏都能够至少被测量一次，从而能够适应何块数的拼接显示屏准确的色坐标测量，基于光谱仪的测量结果，对成像传感器进行标定和修正，具有成本低廉，操作便利，测量精确的优势。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的用于LED拼接显示屏校准的色度测量方法的步骤流程图
图2为本申请实施例提供的用于LED拼接显示屏校准的色度测量装置的结构示意图；
图3为本申请实施例提供的用于LED拼接显示屏校准的色度测量装置的光纤阵列耦合装置和光谱获取装置的工作示意图；
图4为本申请实施例提供的用于LED拼接显示屏校准的色度测量装置的光纤阵列耦合装置的移动示意图；
图5为本申请实施例提供的用于LED拼接显示屏校准的色度测量装置的光纤阵列耦合装置的采集工作示意图；
图6为本申请实施例提供的用于LED拼接显示屏校准的色度测量装置的光纤阵列耦合装置的结构示意图；
图中标记：
1、物镜；2、部分通透部分反射镜片；3、成像传感器；4、光纤阵列耦合装置；40、点扫描组件；400、光导部件；5、光谱获取装置；51、准直色散组件；510、准直镜；511、色散组件；512、聚焦镜；52、成像分析组件；A、LED拼接显示屏；A1、1号子显示屏；A2、2号子显示屏；B、光纤阵列耦合装置采集点。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没 有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
以下结合附图对本申请的实施例作进一步详细说明。
本申请实施例提供一种用于LED拼接显示屏校准的色度测量方法及装置，利用部分通透部分反射镜片对出射光进行分离，一方面利用成像传感器进行分析，一方面利用光谱仪进行色度测量和光谱测量，并利用可移动的设计方式使得光谱仪能够简便的对不同区域的LED显示屏的出射光进行色度测量和光谱测量，基于光谱仪的测量结果，对成像传感器进行标定和修正，具有成本低廉，操作便利，测量精确的优势。
为达到上述技术效果，本申请的总体思路如下：
一种用于LED拼接显示屏校准的色度测量方法，该方法包括以下步骤：
S1、利用物镜1对LED拼接显示屏的出射光进行成像；
S2、利用部分通透部分反射镜片2从物镜1接收光束并进行分束，获得第一光束和第二光束；
S3、利用成像传感器3接收第一光束，获得原始图像；
S4、利用可移动的光纤阵列耦合装置4以二维点阵形式接收第二光束，并将接收到的第二光束转换成一维点阵光；
S5、利用光谱获取装置5根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息。
以下结合附图对本申请的实施例作进一步详细说明。
第一方面，参见图1所示，本申请实施例提供一种用于LED拼接显示屏校准的色度测量方法，该方法包括以下步骤：
S1、利用物镜1对LED拼接显示屏的出射光进行成像；
S2、利用部分通透部分反射镜片2从物镜1接收光束并进行分束，获得第一光束和第二光束；
S3、利用成像传感器3接收第一光束，获得原始图像；
S4、利用可移动的光纤阵列耦合装置4以二维点阵形式接收第二光束，并将接收到的第二光束转换成一维点阵光；
S5、利用光谱获取装置5根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息。
必要时，光纤阵列耦合装置4的移动方向与第二光束的出射端垂直；
即光纤阵列耦合装置4的接收端的平面与第二光束的出射端垂直。
其中，成像传感器3具体可以是RGB成像传感器，用于接收第一光束，获得对应的RGB图像。
本申请实施例的原理为：将对输入的光分为两路，一路传送至成像传感器3，一路传送至光谱获取装置5，通过光谱获取装置5测量根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息，对成像传感器3进行标定和修正；
利用部分通透部分反射镜片对出射光进行分离，一方面利用成像传感器3进行分析，一方面利用光谱获取装置5进行色度测量，并利用可移动的设计方式使得光谱获取装置5能够简便的对不同目标区域的LED拼接显示屏的出射光进行色度信息和光谱信息，基于光谱获取装置5根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息，对成像传感器3进行标定和修正，具有成本低廉，操作便利，测量精确的优势。
在具体操作时，物镜1对LED拼接显示屏的出射光进行成像，部分通透部分反射镜片2对物镜1的成像进行部分透射获得第一光束以及进行部分反射获得第二光束；当然，第一光束可以是反射得到，第二光束是透射得到，此处以第一光束是透射获得，第二光束是反射获得为例进行说明。
一方面，成像传感器3接收并分析第一光束；
另一方面，可移动的设置在部分通透部分反射镜片2的第二光束出射端的光纤阵列耦合装置4，其用于以二维点阵形式采集第二光束，并将二维点阵光转换成一维点阵光。
其中，成像传感器3位于第一光束的成像面，光纤阵列耦合装置4被配置成可移动的设置在第二光束的共轭像面上；
光纤阵列耦合装置4的二维点阵可以采用M*N的形式，通过位移电机或压电陶瓷等器件实现在共轭像面上的平移，实现和被测的LED拼接显示屏的多块子显示屏配准，通过配准操作，可以实现光纤阵列耦合装置每次能够采集测量目标区域的光谱信息和色度信息，目标区域可以为多个目标子显示屏的中心区域。例如，当需要同时测量一个或者多个目标子显示屏的色度信息和光谱信息时，移动光纤阵列耦合装置，配准光纤阵列耦合装置与LED拼接显示屏的多块子显示屏，使得通过光纤阵列耦合装置4的二维点阵同时采集测量一个或者多个目标子显示屏的色度信息和光谱信息。通过进行多个子显示屏的光谱测量和色度测量，从而达到集成化快速测量，实现各个子显示屏的快速颜色标定测量。
需要说明的是，移动光纤阵列耦合装置4，能够采集处于不同区域的子显示屏；
对光纤阵列耦合装置4的点阵形式进行设置，从而可以采集来源于多个子显示屏的光。
必要时，若使用需要，可对光纤阵列耦合装置4的点阵形式进行调整，光纤阵列耦合装置4的点阵形式也可用于采集一个子显示屏的光，具体根据使用需求进行调整。
需要说明的是，LED拼接显示屏由多个子显示屏拼接而成。
在一个实施例中，可以移动光纤阵列耦合装置4，配准光纤阵列耦合装置4与多个子显示屏，使得光纤阵列耦合装置4能同时获得多个目标区域的色度信息和光谱信息。
在另一个实施例中，可以多次移动光纤阵列耦合装置4，获取每次移动光纤阵列耦合装置4时目标子显示屏的色度信息和光谱信息，直至每个子显示屏至少被获取一次色度信息和光谱信息。
具体的，多次移动光纤阵列耦合装置4，直至各子显示屏至少被获取一次色度信息和光谱信息，包括以下步骤：
根据子显示屏的个数，计算光纤阵列耦合装置4需要移动的距离和次数；
根据距离和次数多次移动光纤阵列耦合装置4，直至每个子显示屏至少被获取一次色度信息和光谱信息。
图5为上述实施例的一种具体实施方式，假设光纤阵列耦合装置二维点阵采用的是3*3的形式，拼接显示屏为4*4的拼接屏幕，则可以移动4次光纤阵列耦合装置，从而获得所有子显示屏的光谱信息，例如，第一次移动光纤阵列耦合装置，使得其获取拼接屏左上角3*3共9个子显示屏的光谱信息，第二次移动光纤阵列耦合装置，使得其获取拼接屏右上角3*3共9个子显示屏的光谱信息，第三次移动光纤阵列耦合装置，使得其获取拼接屏左下角3*3共9个子显示屏的光谱信息，第四次移动光纤阵列耦合装置，使得其获取拼接屏右下角3*3共9个子显示屏的光谱信息，从而通过4次移动光纤阵列耦合装置，使得每个子显示屏至少被测量一次。
进一步的，该方法还包括以下步骤：
根据LED拼接显示屏对应区域的光谱信息以及色度信息，获得LED拼接显示屏对应区域的标定矩阵；
根据标定矩阵对GRB图像进行校准。
具体为，根据光谱仪测量获得的色度信息也即标准色度信息和彩色相机获得的原始图像信息获得标定矩阵，再利用这个标定矩阵去校准彩色相机获得的原始图像。
需要说明的是，LED拼接显示屏对应区域，具体是指光纤阵列耦合装置4采集到的第二光束所对应的LED拼接显示屏上的子显示屏。
第二方面，参见图2～6所示，本申请实施例还提供用于LED拼接显示屏校准的色度测量装置，该色度测量装置用于实施第一方面提及的用于LED拼接显示屏校准的色度测量方法，该色度测量装置包括：
物镜1，其用于对LED拼接显示屏的出射光进行成像；
部分通透部分反射镜片2，其用于将从物镜1接收到的光束进行分束，获得第一光束和第二光束；
成像传感器3，其用于根据第一光束进行成像；
光纤阵列耦合装置4，可移动地设置在第二光束的出射端，用于以二维点阵形式采集第二光束，并将接收到的第二光束转换成一维点阵光；
光谱获取装置5，其用于根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息。
必要时，光纤阵列耦合装置4的移动方向与第二光束的出射端垂直；
即光纤阵列耦合装置4的接收端的平面与第二光束的出射端垂直。
其中，成像传感器3具体可以是RGB成像传感器，用于接收第一 光束，获得对应的RGB图像。
需要说明的是，说明书附图的图2中，A部件为LED拼接显示屏；
LED拼接显示屏由多个子显示屏拼接而成。
本申请实施例的原理为：将对输入的光分为两路，一路传送至成像传感器3，一路传送至光谱获取装置5，通过光谱获取装置5测量根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息，对成像传感器3进行标定和修正；
利用部分通透部分反射镜片对出射光进行分离，一方面利用成像传感器3进行分析，一方面利用光谱获取装置5进行色度测量和光谱测量，并利用可移动的设计方式使得光谱获取装置5能够简便的对不同目标区域的LED拼接显示屏的出射光进行色度测量和光谱测量，基于光谱获取装置5根据一维点阵光获得LED拼接显示屏上多个区域的色度信息和光谱信息，对成像传感器3进行标定和修正，具有成本低廉，操作便利，测量精确的优势。
在具体操作时，物镜1对LED拼接显示屏的出射光进行成像，部分通透部分反射镜片2对物镜1的成像进行部分透射获得第一光束以及进行部分反射获得第二光束；当然，第一光束可以是反射得到，第二光束是透射得到，此处以第一光束是透射获得，第二光束是反射获得为例进行说明。
一方面，成像传感器3接收并分析第一光束；
另一方面，可移动的设置在部分通透部分反射镜片2的第二光束出射端的光纤阵列耦合装置4，其用于以二维点阵形式采集第二光束，并将二维点阵光转换成一维点阵光。
其中，成像传感器3位于第一光束的成像面，光纤阵列耦合装置4被配置成可移动的设置在第二光束的共轭像面上；
光纤阵列耦合装置4的二维点阵可以采用M*N的形式，通过位移 电机或压电陶瓷等器件实现在共轭像面上的平移，实现和被测的LED拼接显示屏的多块子显示屏配准，通过配准操作，可以实现光纤阵列耦合装置每次能够采集目标区域的色度信息和光谱信息，目标区域可以为多个目标子显示屏的中心区域。例如，当需要同时测量一个或者多个目标子显示屏的色度信息和光谱信息时，移动光纤阵列耦合装置，配准光纤阵列耦合装置与LED拼接显示屏的多块子显示屏，使得通过光纤阵列耦合装置4的二维点阵同时采集一个或者多个目标子显示屏的色度信息和光谱信息。通过进行多个子显示屏的色度测量和光谱测量，从而达到集成化快速测量，实现各个子显示屏的快速颜色标定测量；
在进行移动时，通过分析被测的LED拼接显示屏中子显示屏的块数，计算需要移动的距离和次数，确保每个子显示屏能够至少进行一次色度信息和光谱信息的获取，从而对任何块数的LED拼接显示屏进行色度测量和光谱测量。
需要说明的是，如说明书附图的图4所示，移动光纤阵列耦合装置4，能够采集处于不同区域的子显示屏；
如说明书附图的图5所示，对光纤阵列耦合装置4的点阵形式进行设置，从而可以采集来源于多个子显示屏的光。
必要时，若使用需要，可对光纤阵列耦合装置4的点阵形式进行调整，光纤阵列耦合装置4的点阵形式也可用于采集一个子显示屏的光，具体根据使用需求进行调整。
在一个实施例中，可以移动光纤阵列耦合装置4，配准光纤阵列耦合装置4与多个子显示屏，使得光纤阵列耦合装置4能同时获得多个目标区域的色度信息和光谱信息。
在另一个实施例中，可以多次移动光纤阵列耦合装置4，获取每次移动光纤阵列耦合装置4时目标子显示屏的色度信息和光谱信息，直 至每个子显示屏至少被获取一次色度信息和光谱信息。
具体的，光纤阵列耦合装置4包括点扫描组件40，用于以二维点阵形式采集第二光束，得到二维点阵光，并将二维点阵光转换成一维点阵光后出射。
具体的，点扫描组件40包括：
多根光导部件400；
多根光导部件400的一端以二维点阵形式排列，用于采集第二光束，得到二维点阵光；
多根光导部件400的另一端呈直线排列，以将二维点阵光转换为一维点阵光出射。
具体的，光谱获取装置5包括：
准直色散组件51，其用于对一维点阵光进行准直处理、色散处理以及聚焦处理；
成像分析组件52，具体可以是光谱仪，其用于对经过准直处理、色散处理以及聚焦处理的一维点阵光成像并分析，从而获得一维点阵光的光谱信息和色度信息，也就获得了二维点阵光的光谱信息和色度信息。
需要说明的是，准直色散组件51包括：
准直镜510，其用于进行准直处理；
色散组件511，其用于进行色散处理；
聚焦镜512，其用于进行聚焦处理。
在具体实施时，点扫描组件40的前端采集光线，得到二维点阵光，假设以M*N的阵列形式排列，即二维点阵光中的光线也按照M*N的阵列形式排列，进而二维点阵光在传输过程中以一维点阵光的形式射出，由于二维点阵光中的光线按照M*N的阵列形式排列，故而一维点阵光为1*MN的一维结构；
需要说明的是，M*N中的M和N为不小于1的正整数；
如M*N可以为3*3、4*6、5*7或其他阵列结构；
当M*N取3*3时，即3行3列，则点扫描组件40的前端可以收集9个空间点的光信息，点扫描组件40的后端则射出9*1的一维点阵光。
另外，根据M*N构成点阵结构，点阵在空间上可以排布为矩形，可以排布为圆形，也可以排布为其他不规则形状。
需要说明的是，在本申请中，诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上仅是本申请的具体实施方式，使本领域技术人员能够理解或实现本申请。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本申请的精神或范围的情况下，在其它实施例中实现。因此，本申请将不会被限制于本文所示的这些实施例，而是要符合与本文所申请的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种用于LED拼接显示屏校准的色度测量方法，其特征在于，所述方法包括以下步骤：
    利用物镜(1)对LED拼接显示屏的出射光进行成像；
    利用部分通透部分反射镜片(2)从所述物镜(1)接收光束并进行分束，获得第一光束和第二光束；
    利用成像传感器(3)接收所述第一光束，获得原始图像；
    利用可移动的光纤阵列耦合装置(4)以二维点阵形式接收所述第二光束，并将接收到的所述第二光束转换成一维点阵光；
    利用光谱获取装置(5)根据所述一维点阵光获得所述LED拼接显示屏上多个区域的色度信息和光谱信息。
  2. 根据权利要求1所述的用于LED拼接显示屏校准的色度测量方法，其特征在于：
    所述成像传感器(3)位于所述第一光束的成像面，所述光纤阵列耦合装置(4)被配置成可移动的设置在所述第二光束的共轭像面上。
  3. 根据权利要求1所述的用于LED拼接显示屏校准的色度测量方法，其特征在于：所述LED拼接显示屏由多个子显示屏拼接而成；
    所述利用可移动的光纤阵列耦合装置(4)以二维点阵形式接收所述第二光束，并将所述二维点阵光转换成一维点阵光时，还包括以下步骤：
    移动所述光纤阵列耦合装置(4)，配准所述光纤阵列耦合装置(4)与所述多个子显示屏，使得所述光纤阵列耦合装置(4)能同时获得多个目标区域的色度信息和光谱信息。
  4. 根据权利要求1所述的用于LED拼接显示屏校准的色度测量方法，其特征在于：所述LED拼接显示屏由多个子显示屏拼接而成；
    所述利用可移动的光纤阵列耦合装置(4)以二维点阵形式接收所 述第二光束，并将所述二维点阵光转换成一维点阵光时，还包括以下步骤：
    多次移动所述光纤阵列耦合装置(4)，获取每次移动所述光纤阵列耦合装置(4)时目标子显示屏的色度信息和光谱信息，直至每个所述子显示屏至少被获取一次色度信息和光谱信息。
  5. 根据权利要求4所述的用于LED拼接显示屏校准的色度测量方法，其特征在于，所述多次移动所述光纤阵列耦合装置(4)，获取每次移动所述光纤阵列耦合装置(4)时目标子显示屏的色度信息和光谱信息，直至每个所述子显示屏至少被获取一次色度信息和光谱信息，包括以下步骤：
    根据所述子显示屏的个数，计算所述光纤阵列耦合装置(4)需要移动的距离和次数；
    根据所述距离和次数多次移动所述光纤阵列耦合装置(4)，直至每个所述子显示屏至少被获取一次色度信息和光谱信息。
  6. 根据权利要求1所述的用于LED拼接显示屏校准的色度测量方法，其特征在于，所述方法还包括以下步骤：
    根据所述LED拼接显示屏对应区域的光谱信息以及色度信息，获得LED拼接显示屏对应区域的标定矩阵；
    根据所述标定矩阵对所述原始图像校准。
  7. 一种用于LED拼接显示屏校准的色度测量装置，其特征在于，所述装置包括：
    物镜(1)，其用于对LED拼接显示屏的出射光进行成像；
    部分通透部分反射镜片(2)，其用于将从所述物镜(1)接收到的光束进行分束，获得第一光束和第二光束；
    成像传感器(3)，其用于根据所述第一光束进行成像；
    光纤阵列耦合装置(4)，可移动地设置在所述第二光束的出射端， 用于以二维点阵形式采集所述第二光束，并将接收到的所述第二光束转换成一维点阵光；
    光谱获取装置(5)，其用于根据所述一维点阵光获得所述LED拼接显示屏上多个区域的色度信息和光谱信息。
  8. 根据权利要求7所述的用于LED拼接显示屏校准的色度测量装置，其特征在于：
    所述成像传感器(3)位于所述第一光束的成像面，所述光纤阵列耦合装置(4)被配置成可移动的设置在所述第二光束的共轭像面上。
  9. 根据权利要求7所述的用于LED拼接显示屏校准的色度测量装置，其特征在于：
    所述光纤阵列耦合装置(4)包括点扫描组件(40)，用于以二维点阵形式采集所述第二光束，得到所述二维点阵光，并将所述二维点阵光转换成所述一维点阵光后出射。
  10. 如权利要求9所述的用于LED拼接显示屏校准的色度计装装置，其特征在于，所述点扫描组件(40)包括：
    多根光导部件(400)；
    多根所述光导部件(400)的一端以二维点阵形式排列，用于采集所述第二光束，得到所述二维点阵光；
    多根所述光导部件(400)的另一端呈直线排列，以将所述二维点阵光转换为一维点阵光出射。
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