Optical information detection system and imaging type colorimeter

Abstract

The utility model discloses an optical information detection system and an imaging type colorimeter, comprising a lens and an optical filter, the optical filter is installed at one end of the lens, the lens is used for receiving optical signals of a light source, and the optical filter is used for decomposing optical information received by the lens into optical signals representing colors; and the processing module is electrically connected with the detection part, the processing module comprises an image sensor, and the image sensor is used for receiving the optical signal and converting the optical signal into a corresponding digital signal. The detection component can filter out optical signals with required colors to the processing module through the optical filter, so that the interference of signals with other colors on the detection process is avoided, and the result obtained by detection is more accurate; the image sensor of the processing module converts the optical signal obtained by the detection component into the digital signal, so that the value of the optical information can be more intuitively reflected, the digital signal is more sensitive to the reflection of the light source change, and the processing module has higher detection efficiency on the optical information on the whole.

Description

Technical Field

[0001] The utility model relates to the technical field of optical information detection, in particular to an optical information detection system and an imaging colorimeter. Background Art

[0002] As an important part of the information industry, flat panel display technology has played an important role in the development of information technology. From televisions and notebooks to smart phones and smart watches, they all rely on the support of flat panel display technology. At the same time, visual performance evaluation technology based on optical physical measurement has also developed rapidly.

[0003] Light sources play an irreplaceable role in human life. From flat panel light sources used in industrial production to laser pens, light source display technology is indispensable. At the same time, visual evaluation technology based on optical physical measurement has also developed rapidly.

[0004] As the development of technologies such as flat panel displays places increasingly higher demands on signal detection, traditional detection methods are greatly affected by light stability and uniformity. Interference between light signals of different colors can easily affect the detection results, and the detection efficiency is low, making it difficult to intuitively reflect subtle changes in light signals. Utility Model Content

[0005] The purpose of the utility model is to provide a light information detection system and an imaging colorimeter to solve the problems in the prior art that the requirements for signal detection are becoming increasingly higher due to the development of technologies such as flat panel displays, the traditional detection method is greatly affected by the stability and uniformity of light, the interference between light signals of different colors easily affects the detection results, and the detection efficiency is low, making it difficult to intuitively reflect the subtle changes of the light signal.

[0006] To achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a light information detection system, the system comprising: a detection component, comprising a lens and a filter, the filter being mounted at one end of the lens, the lens being used to receive a light signal from a light source, the filter being used to decompose the light information received by the lens into light signals representing colors;

[0007] A processing module, wherein the processing module is electrically connected to the detection component, and the processing module comprises an image sensor, wherein the image sensor is used to receive the optical signal and convert the optical signal into a corresponding digital signal.

[0008] As a further improvement of the present invention, the system also includes: the processing module also includes a main control chip, the main control chip is electrically connected to the image sensor, and the main control chip is configured to receive the digital signal from the image sensor through a built-in high-speed transceiver and obtain the chromaticity information and brightness information in the digital signal.

[0009] As a further improvement of the present invention, the system further includes: an operation terminal, the operation terminal is equipped with an acquisition card, the acquisition card is connected to the main control chip through CoaxPress protocol communication and receives the chromaticity information and brightness information of the main control chip.

[0010] As a further improvement of the present invention, the system further includes: the operation terminal is configured to generate corresponding chromaticity images and luminance images according to the chromaticity information and the luminance information.

[0011] As a further improvement of the present invention, the system further comprises: the main control chip has a built-in or external memory chip, and the memory chip is used to store chromaticity information and brightness information.

[0012] As a further improvement of the present invention, the system further includes: the processing module further includes a main control chip, the image sensor includes a high-speed differential interface, and the high-speed differential interface is connected to a high-speed transceiver of the main control chip via an LVDS protocol.

[0013] As a further improvement of the present invention, the system further includes: the filter includes an RGB three-way filter.

[0014] As a further improvement of the present invention, the system further includes: a motor, the main control chip is electrically connected to the motor, the motor is connected to the filter, and the main control chip controls the filter through the motor to filter out light signals of different colors respectively.

[0015] As a further improvement of the present invention, the system further includes: the main control chip has a built-in or external memory, and the memory stores a configuration file of the main control chip for configuring the operation of the main control chip.

[0016] The utility model also provides an imaging colorimeter, which comprises a light information detection system as described in any one of the above items.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the detection component can filter out the light signal of the required color through the filter to the processing module, thereby avoiding the interference of signals of other colors on the detection process, making the detection result more accurate; the image sensor of the processing module converts the light signal obtained by the detection component into a digital signal, so as to facilitate a more intuitive reflection of the value of the light information, and the use of digital signals is more sensitive to the reflection of the light source changes. Overall, the processing module has a higher efficiency in detecting light information. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a connection diagram of a detection component and a processing module in an implementation mode of the utility model.

[0019] Figure 2 It is a system connection diagram of the transmission of optical signals between the detection component and the processing module in one embodiment of the utility model.

[0020] Figure 3 It is a schematic diagram of the overall framework connection of the detection system in one implementation of the utility model. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0022] It should be noted that the term "comprise" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0023] In one embodiment of the utility model, a light information detection system is provided, which can be used in industrial production to accurately measure and control product color, thereby helping to improve product quality and production efficiency; it can be used in the medical field to accurately measure and control the skin color of patients, thereby helping doctors to diagnose and treat the patient's condition; it can also be used for brightness and chromaticity measurement of cameras, camcorders and other equipment, thereby helping to improve shooting effects and quality.

[0024] In the present application, the optical information detection system is mainly used to perform optical physical measurements on display devices such as flat panels and televisions to detect the visual display effects of the display devices, which helps to improve the display effects of the display devices, including the detection and adjustment of parameters such as resolution and color difference.

[0025] Specifically, Figure 1 As shown, a light information detection system includes: a detection component 1 and a processing module 2, wherein the processing module 2 is electrically connected to the detection component 1. The detection component 1 is used to detect light information of a light source, and the processing module 2 receives the light information and performs detection.

[0026] The detection component 1 includes a lens 11 and a filter 12, wherein the filter 12 is mounted at one end of the lens 11, the lens 11 is used to receive an optical signal from a light source, and the filter 12 is used to decompose the optical information received by the lens 11 into an optical signal representing a color;

[0027] The processing module 2 includes an image sensor 21, and the image sensor 21 is used to receive the optical signal and convert the optical signal into a corresponding digital signal.

[0028] In this way, the detection component 1 can filter out the light signal of the required color through the filter 12 to the processing module 2, thereby avoiding the interference of other color signals on the detection process, making the detection result more accurate; the image sensor 21 of the processing module 2 converts the light signal obtained by the detection component 1 into a digital signal, so as to more intuitively reflect the value of the light information, and the use of digital signals is more sensitive to the change of the light source. Overall, the processing module 2 has a higher efficiency in detecting light information.

[0029] The image sensor 21 may be a CMOS image sensor 21 .

[0030] The filter 12 is used to decompose the optical information received by the lens 11 into optical signals representing colors. It can be understood that: the light emitted by the light source passes through the lens 11 and the filter 12. The filter 12 can allow the light of the required color to pass through and filter the light of other colors. In this way, the comprehensive optical information with multiple colors is decomposed into optical signals of the required color, such as decomposing the blue light from the light emitted by the light source to pass through the filter 12 and be transmitted to the processing module 2.

[0031] like Figure 2 As shown, in one embodiment of the utility model, the processing module 2 also includes a main control chip 22, and the main control chip 22 is electrically connected to the image sensor 21. The main control chip 22 is configured to receive a digital signal from the image sensor 21 through a built-in high-speed transceiver 221 and obtain chromaticity information and brightness information in the digital signal.

[0032] In this way, chromaticity information and brightness information can be extracted for analysis, and the chromaticity display capability and brightness display capability of the display device can be better detected.

[0033] Among them, the main control chip 22 can be an ARM chip, a DSP chip, an FPGA chip, etc. Preferably, an FPGA chip can be used in this application.

[0034] In one embodiment of the present invention, the detection system further includes an operation terminal 3 , which is equipped with an acquisition card 31 . The acquisition card 31 is connected to the main control chip 22 via CoaxPress protocol communication and receives chromaticity information and brightness information of the main control chip 22 .

[0035] The operation terminal 3 can be understood as a PC terminal, that is, a terminal device such as a computer or a display that can be used to display chromaticity information and brightness information.

[0036] Based on the above implementation, the CoaxPress protocol can increase the bandwidth of data transmission, reduce the time of image transmission, and improve the frame rate accepted by the operation terminal 3; the number of coaxial cables can be increased, and the deskew function of the high-speed transceiver 221 of the main control chip 22 can be used to display data synchronization; the transmission distance is long: theoretically it can meet 6.25Gbps at 40m and 12.5Gbps at 30m; small size, high density, saving product design space; easy on-site installation, no need for additional manpower training; in line with the GenICam (Generic Interface for Cameras) standard of the European Machine Vision Association (EMVA), application software development is more convenient.

[0037] First of all, it should be noted that the CoaxPress protocol is an asymmetric high-speed point-to-point serial communication digital interface standard. This standard allows devices (such as digital cameras) to be connected to a host (such as a data acquisition device in a personal computer) via a single or multiple coaxial cables, and a single channel can transmit data at a speed of up to 12.5G bits / second.

[0038] Secondly, deskew generally refers to a technique or process for eliminating the skew or deflection of an image or data stream. In the application of high-speed transceiver 221, the deskew function is mainly used to solve the phase difference problem that may occur during data transmission, ensure that the data can be realigned during transmission, and avoid transmission errors caused by sampling data not on the same beat.

[0039] Furthermore, the operation terminal 3 is configured to generate corresponding chromaticity images and luminance images according to the chromaticity information and luminance information, so that the staff can analyze the detected data more intuitively and concretely.

[0040] In one embodiment of the present invention, Figure 3 As shown, the main control chip 22 has a built-in or external memory chip 5, and the memory chip 5 is used to store chromaticity information and brightness information.

[0041] The main control chip 22 is used to collect the digital signal output by the image sensor 21, and then cache the digital signal to the memory chip 5; when a data read request from an external device, namely the operation terminal 3, is obtained, the digital signal cached in the memory chip 5 is read and output to the operation terminal 3 according to the CoaxPress standard.

[0042] The memory chip 5 may be a DDR memory chip 5 (DDR, Double Data Rate). Specifically, a DDR3 memory chip 5 may be preferably used, which is a third generation double data rate synchronous dynamic random access memory 6 and can provide higher operating performance and lower voltage.

[0043] In one embodiment of the present invention, the main control chip 22 can also perform phase consistency correction processing on the collected digital signal, and store the corrected digital signal in the memory chip 5 .

[0044] In one embodiment of the present invention, the processing module 2 further includes a main control chip 22, and the image sensor 21 includes a high-speed differential interface, which is connected to a high-speed transceiver 221 of the main control chip 22 via a LVDS (Low-Voltage Differential Signaling) protocol.

[0045] In this way, the main control chip 22 can receive digital signals at high speed and stably, thereby improving the efficiency of the entire system in detecting optical signals.

[0046] The high-speed transceiver 221 has the advantages of high-speed data transmission, low latency, good stability, strong anti-interference ability, long-distance transmission, support for multiple protocols and intelligent management, and plays an important role in the field of communication and data transmission.

[0047] The LVDS protocol has a very high transmission capacity and is suitable for high-bandwidth applications, such as high-resolution video display or high-speed data acquisition. The LVDS protocol has the characteristics of low voltage and low power consumption. It also has low noise radiation, strong anti-interference ability, long transmission distance and good compatibility. It provides great flexibility for system design.

[0048] In one implementation of the present invention, the filter 12 includes an RGB three-way filter 12 .

[0049] The RGB three-way filter 12 can filter out the three primary colors of RGB.

[0050] like Figure 3 As shown, further, the detection system also includes a motor 4, the main control chip 22 is electrically connected to the motor 4, the motor 4 is connected to the filter 12, and the main control chip 22 controls the filter 12 through the motor 4 to filter out light signals of different colors respectively.

[0051] Specifically, the filter 12 is an RGB three-way filter, and the motor 4 can control the RGB three-way filter to rotate at one end of the lens 11, so that the light information can pass through the R, G, and B segments on the filter 12 respectively to filter out light signals representing the three colors of R, G, and B.

[0052] For example, the main control chip 22 controls the operation of the motor 4, and the motor 4 controls the RGB three-way filter to rotate a set angle, so that the light information can filter out the red (R) light signal through the RGB three-way filter, and the image sensor 21 converts the red light signal into a digital signal and transmits it to the main control chip 22; then the motor 4 controls the RGB three-way filter to rotate a set angle again, so that the light information can filter out the green (G) light signal through the RGB three-way filter, and the image sensor 21 converts the green light signal into a digital signal and transmits it to the main control chip 22; then the motor 4 controls the RGB three-way filter to continue to rotate a set angle, so that the light information can filter out the blue (B) light signal through the RGB three-way filter, and the image sensor 21 converts the blue light signal into a digital signal and transmits it to the main control chip 22.

[0053] In one embodiment of the present invention, Figure 3 As shown, the main control chip 22 has a built-in or external memory 6 , and the memory 6 stores a configuration file of the main control chip 22 for configuring the operation of the main control chip 22 .

[0054] Among them, the memory 6 adopts a Flash module, and the Flash module stores configuration files, which include operating parameters of the main control chip 22 and startup commands, such as Bitstream (bit), MCS (Memory Configuration Stream) or Bin files. These files contain detailed information such as the connection and function of the logic elements of the main control chip 22, as well as the timing and logic settings required for configuration. Usually, when the main control chip 22 is powered on, the configuration file is loaded from the Flash module, and the logic elements and connections of the main control chip 22 are set according to the information in the file.

[0055] In one embodiment of the present invention, an imaging colorimeter is further provided. The imaging colorimeter includes a light information detection system as described in any one of the above embodiments.

[0056] The imaging colorimeter is an instrument for measuring and evaluating color; the image is converted into a digital signal using the image sensor 21, and then the image is processed through the operation terminal 3. The imaging colorimeter images the object to be measured through the lens 11, divides the imaging area into a number of pixels, and then samples each pixel, and the sampled digital signal constitutes an image.

[0057] In colorimetry, an imaging colorimeter uses a three-primary color (red, green, and blue) light source to illuminate the object being measured, then measures the color of the light reflected or transmitted by each pixel on the object, and calculates the chromaticity value of the pixel of the object being measured based on the color.

[0058] In brightness measurement, based on the collected chromaticity values, a brightness value related to the chromaticity value is generated.

[0059] Imaging colorimeters can be used in industrial production, food industry, lighting field, display field, medical imaging, drone aerial photography, security monitoring and other fields.

[0060] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0061] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A light information detection system, characterized in that: include: The detection component includes a lens and a filter, wherein the filter is mounted at one end of the lens, the lens is used to receive a light signal from a light source, and the filter is used to decompose the light information received by the lens into light signals representing colors; A processing module, wherein the processing module is electrically connected to the detection component, and the processing module comprises an image sensor, wherein the image sensor is used to receive the optical signal and convert the optical signal into a corresponding digital signal.

2. The optical information detection system according to claim 1, characterized in that: The processing module also includes a main control chip, which is electrically connected to the image sensor. The main control chip is configured to receive a digital signal from the image sensor through a built-in high-speed transceiver and obtain chromaticity information and brightness information in the digital signal.

3. The optical information detection system according to claim 2, characterized in that: The detection system also includes an operation terminal, which is equipped with an acquisition card. The acquisition card is connected to the main control chip through CoaxPress protocol communication and receives chromaticity information and brightness information of the main control chip.

4. The optical information detection system according to claim 3, characterized in that: The operation terminal is configured to generate corresponding chromaticity images and luminance images according to the chromaticity information and the luminance information.

5. The optical information detection system according to claim 2, characterized in that: The main control chip has a built-in or external memory chip, and the memory chip is used to store chromaticity information and brightness information.

6. The optical information detection system according to claim 1, characterized in that: The processing module further includes a main control chip, and the image sensor includes a high-speed differential interface, and the high-speed differential interface is connected to a high-speed transceiver in the main control chip through an LVDS protocol.

7. The optical information detection system according to claim 1, characterized in that: The filter includes an RGB three-way filter.

8. The optical information detection system according to claim 2, characterized in that: The detection system also includes a motor, the main control chip is electrically connected to the motor, the motor is connected to the filter, and the main control chip controls the filter through the motor to filter out light signals of different colors respectively.

9. The optical information detection system according to claim 2, characterized in that: The main control chip has a built-in or external memory, and the memory stores a configuration file of the main control chip, which is used to configure the operation of the main control chip.

10. An imaging colorimeter, characterized in that: A detection system for optical information comprising the system described in any one of claims 1 to 9.

Images