An imaging brightness color analyzer and method of detection

Abstract

The application provides an imaging brightness color analyzer and a detection method. The analyzer comprises a shell, a CCD electronic lens, a precision optical mirror, a multimode quartz optical fiber, a high-precision spectrometer and a color RGB camera. The precision optical mirror is arranged between the CCD electronic lens and the color RGB camera. The entrance of the multimode quartz optical fiber is arranged on the reflection path of the precision optical mirror. The exit of the multimode quartz optical fiber is connected with the high-precision spectrometer. The precision optical mirror is connected with an electric sliding table module. The analyzer can quickly and accurately focus the image formed by the lens on the spectrometer or the RGB camera through the electrically moving mirror, and realizes the multifunctional characteristics of the instrument. Preferably, the CCD electronic lens can realize fast automatic focusing and diaphragm adjusting, and improves the measurement efficiency and the automation degree. The spectrometer can also be used to calibrate the RGB camera, greatly improves the accuracy of the instrument, and meets the higher precision test requirement.

Description

Technical Field

[0001] This invention relates to imaging brightness and color analysis technology for display products, and more particularly to an imaging brightness and color analyzer and a detection method. Background Technology

[0002] With the progress of the times and the development of technology, the display screen industry is developing faster and faster, and the demand is increasing. Therefore, there is an urgent need to develop an instrument that can meet customer needs and measure the optical characteristics of flat panel displays such as spectrum, brightness, color, and uniformity more quickly and stably. Summary of the Invention

[0003] The purpose of this invention is to provide an imaging brightness and color analyzer and a detection method that utilizes a spectrometer and a color RGB camera to perform imaging brightness and color analysis on the tested product.

[0004] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0005] According to one aspect of the present invention, an imaging brightness and color analyzer is provided, comprising a housing, a CCD electronic lens, and a precision optical mirror, a multimode quartz fiber, a high-precision spectrometer, and a color RGB camera disposed within the housing. The CCD electronic lens is mounted on one side of the housing, the precision optical mirror is disposed between the CCD electronic lens and the color RGB camera, the entrance of the multimode quartz fiber is disposed on the reflection path of the precision optical mirror, and the exit of the multimode quartz fiber is connected to the high-precision spectrometer.

[0006] The precision optical mirror is connected to the motorized slide module. The precision optical mirror has a first position and a second position. When the precision optical mirror is in the first position, the CCD electronic lens directly images onto the color RGB camera. When the precision optical mirror is in the second position, the image from the CCD electronic lens is reflected by the precision optical mirror to the entrance port of the multimode quartz fiber and transmitted to the high-precision spectrometer.

[0007] In one embodiment, the CCD electronic lens has an autofocus and aperture adjustment function.

[0008] In one embodiment, the high-precision spectrometer is a cooled spectrometer.

[0009] In one embodiment, the color RGB camera is a cooled color RGB camera.

[0010] In one embodiment, the cooled color RGB camera uses a research-grade image sensor whose chip integrates dual-layer semiconductor cooling while incorporating dark current noise control technology.

[0011] In one embodiment, the brightness detection accuracy of the imaging brightness color analyzer is at least ±3%.

[0012] In one embodiment, the colorimetric detection accuracy of the imaging brightness color analyzer is at least ±0.003.

[0013] According to a second aspect of the present invention, a detection method based on any of the above-described imaging brightness and color analyzers is provided, comprising the following steps:

[0014] Start the electric slide to move the precision optical mirror to the second position;

[0015] Turn on the CCD electronic lens and adjust the focus;

[0016] Start the high-precision spectrometer to detect the spectral data of the product under test;

[0017] Start the electric slide, which will move the precision optical mirror from the second position to the first position;

[0018] Start the color RGB camera to detect the brightness and chromaticity values ​​of the product under test.

[0019] In one embodiment, after activating the high-precision spectrometer and detecting the spectral data of the product under test, the method further includes: correcting the XYZ values ​​of the color RGB camera based on the CIE XYZ tristimulus values ​​measured by the high-precision spectrometer.

[0020] The beneficial effects of this invention are: the electrically movable reflector can quickly and accurately focus the image formed by the lens onto the spectrometer or RGB camera, realizing the multi-functionality of the instrument; preferably, the CCD electronic lens used can achieve rapid automatic focusing and aperture adjustment, improving the efficiency and automation of measurement; by using the spectrometer to calibrate the RGB camera, the accuracy of the instrument is greatly improved, meeting the requirements for higher precision testing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the internal structure of an embodiment of this application;

[0025] The components are: 1-outer shell; 2-CCD electronic lens; 3-precision optical mirror; 4-multimode quartz fiber; 5-high-precision spectrometer; 6-color RGB camera. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0027] like Figure 1 and Figure 2 As shown, this application provides an imaging brightness and color analyzer, including a housing 1, a CCD electronic lens 2, and a precision optical mirror 3, a multimode quartz fiber 4, a high-precision spectrometer 5, and a color RGB camera 6 disposed within the housing 1. The CCD electronic lens 2 is mounted on one side of the housing 1, the precision optical mirror 3 is disposed between the CCD electronic lens 2 and the color RGB camera 6, the entrance of the multimode quartz fiber 4 is disposed on the reflection path of the precision optical mirror 3, and the exit of the multimode quartz fiber 4 is connected to the high-precision spectrometer 5.

[0028] The precision optical mirror 3 is connected to the electric slide module (not shown in the figure). The electric slide module drives the precision optical mirror 3 to move, so that the precision optical mirror 3 has a first position and a second position. When the precision optical mirror 3 is in the first position, the CCD electronic lens 2 directly images onto the color RGB camera 6. When the precision optical mirror 3 is in the second position, the image of the CCD electronic lens 2 is reflected by the precision optical mirror 3 to the entrance of the multimode quartz fiber 4 and transmitted to the high-precision spectrometer 6.

[0029] This imaging brightness and color analyzer uses an electric slide to drive a precision optical mirror, which can quickly and accurately focus the image formed by the lens onto a spectrometer or RGB camera. This achieves the instrument's multi-functionality, enabling free and rapid switching between spectral measurement and brightness and color measurement. It also greatly enhances the instrument's integration and improves its usability.

[0030] Preferably, a CCD electronic lens 2 with autofocus and aperture adjustment functions can be selected, thereby enabling higher automation of testing requirements through automatic control software.

[0031] In a possible embodiment, the high-precision spectrometer 5 is a cooled spectrometer, which can acquire spectral data at very low brightness.

[0032] Preferably, the color RGB camera 6 equipped with the imaging brightness and color analyzer uses a scientific research-grade image sensor. The chip integrates double-layer semiconductor cooling and incorporates dark current noise control technology, making high-speed and high-sensitivity image processing possible.

[0033] Preferably, the high-precision spectrometer 5 equipped with the imaging brightness and color analyzer can be flexibly selected, so that data acquisition can be achieved in a variety of spectral ranges such as 380-780nm and 300-1100nm. It can even measure products with extremely low brightness by equipping a cooled spectrometer.

[0034] Based on the above embodiments, this application also provides a detection method, including the following steps:

[0035] Start the electric slide to move the precision optical mirror to the second position;

[0036] Turn on the CCD electronic lens and adjust the focus;

[0037] Start the high-precision spectrometer to detect the spectral data of the product under test;

[0038] Start the electric slide, which will move the precision optical mirror from the second position to the first position;

[0039] Start the color RGB camera to detect the brightness and chromaticity values ​​of the product under test.

[0040] In a possible embodiment, since the luminance and color analyzer is equipped with both a spectrometer and a color RGB camera, the CIE XYZ tristimulus values ​​measured by the spectrometer can be used to correct the XYZ values ​​of the RGB camera. Therefore, in the above method, after starting the high-precision spectrometer and detecting the spectral data of the product under test, it may further include: correcting the XYZ values ​​of the color RGB camera based on the CIE XYZ tristimulus values ​​measured by the high-precision spectrometer. The corrected analyzer can achieve a luminance accuracy of ±3% and a color accuracy of ±0.003.

[0041] In summary, the imaging brightness and color analyzer provided in this application embodiment is equipped with an extremely high-resolution CCD electronic lens, a precision optical mirror, a multimode quartz fiber, a high-precision spectrometer, and a cooled color RGB camera. It can also be equipped with a dual-layer cooling noise reduction system, modular software functions, and automatic control of mobile APK image signals. This allows for rapid imaging, high-speed acquisition and measurement of brightness and color values ​​across the entire luminous area, and detection of all visible defects. The electrically movable mirror can quickly and accurately focus the image formed by the lens onto the spectrometer or RGB camera, achieving multi-functionality. Preferably, the CCD electronic lens enables rapid automatic focusing and aperture adjustment, improving measurement efficiency and automation. By using the spectrometer to calibrate the RGB camera, the instrument's accuracy is greatly improved, meeting the requirements for higher precision testing.

[0042] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0043] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0044] The above description is merely a preferred example of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A detection method based on an imaging brightness and color analyzer, characterized in that: The imaging brightness and color analyzer includes a housing, a CCD electronic lens, and a precision optical mirror, a multimode quartz fiber, a high-precision spectrometer, and a color RGB camera disposed within the housing. The CCD electronic lens is mounted on one side of the housing, the precision optical mirror is disposed between the CCD electronic lens and the color RGB camera, the entrance of the multimode quartz fiber is disposed on the reflection path of the precision optical mirror, and the exit of the multimode quartz fiber is connected to the high-precision spectrometer. The precision optical mirror is connected to the motorized sliding stage module. The precision optical mirror has a first position and a second position. When the precision optical mirror is in the first position, the CCD electronic lens directly images onto the color RGB camera. When the precision optical mirror is in the second position, the image from the CCD electronic lens is reflected by the precision optical mirror to the entrance of the multimode quartz fiber and transmitted to the high-precision spectrometer. The detection method includes the following steps: Start the electric slide to move the precision optical mirror to the second position; Turn on the CCD electronic lens and adjust the focus; Start the high-precision spectrometer to detect the spectral data of the product under test; Start the electric slide, which will move the precision optical mirror from the second position to the first position; Start the color RGB camera to detect the brightness and chromaticity values ​​of the product under test; After starting the high-precision spectrometer and detecting the spectral data of the product under test, the process also includes: correcting the XYZ values ​​of the color RGB camera based on the CIE XYZ tristimulus values ​​measured by the high-precision spectrometer.

2. The detection method based on an imaging brightness and color analyzer according to claim 1, characterized in that: The CCD electronic lens has automatic focus and aperture adjustment functions.

3. The detection method based on an imaging brightness and color analyzer according to claim 1, characterized in that: The high-precision spectrometer is a cooled spectrometer.

4. The detection method based on an imaging brightness and color analyzer according to claim 1, characterized in that: The color RGB camera is a cooled color RGB camera.

5. The detection method based on an imaging brightness and color analyzer according to claim 4, characterized in that: The cooled color RGB camera uses a research-grade image sensor, whose chip integrates double-layer semiconductor cooling while incorporating dark current noise control technology.

6. The detection method based on an imaging brightness and color analyzer according to claim 1, characterized in that: The brightness detection accuracy of the imaging brightness and color analyzer is at least ±3%.

7. The detection method based on an imaging brightness and color analyzer according to claim 1, characterized in that: The colorimetric detection accuracy of the imaging brightness and color analyzer is at least ±0.003.

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