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Haze meter: The eye of quality in the plastic industry

In today's industrial landscape, plastic products are everywhere, ranging from ordinary daily necessities to high-end industrial components. With its rich and diverse properties and wide applicability, plastic has become a crucial material in modern manufacturing. In the plastic industry, haze meters are playing a crucial role and have become a key tool for ensuring product quality. Haze, as one of the important indicators for evaluating the optical properties of transparent or semi-transparent plastic materials, when light passes through the plastic material, due to various factors such as the internal structural characteristics of the material, possible impurities or surface conditions, it will cause light scattering and absorption, thereby making the passing light become hazy and unclear. The haze meter provides a quantitative evaluation basis for the optical performance of products in the plastic industry by precisely measuring the degree of light scattering.   For plastic product manufacturing enterprises, the application of haze meters holds significant implications in multiple aspects. Firstly, it has made significant contributions to ensuring the appearance quality of the product. In application fields with high requirements for appearance, such as optical lenses, display panels, etc., low-haze plastic materials can provide a clear and transparent visual experience, thereby enhancing the product's level and competitive strength. By conducting strict quality inspections with a haze meter, products that fail to meet the haze standards can be detected and eliminated in a timely manner, preventing substandard products from entering the market.   Secondly, the haze meter also plays a crucial role in the process of product development and quality control. When developing new plastic materials or improving production processes, haze meters can provide accurate optical performance data, helping engineers understand the characteristics and changing trends of materials, and thereby optimize formulas and process parameters to enhance the quality stability of products. In the production process, regular sampling and testing of products using haze meters can monitor production quality in real time, adjust production processes in a timely manner, and ensure that products always meet quality standards. Color haze Meter CS-700 (Measuring indicators: color, color difference, haze, transmittance, spectral transmittance) In addition, the haze meter also provides strong support for the standardization construction and quality certification of the plastic industry. Numerous industry standards and quality certification systems have clear regulations on the haze of plastic materials. The measurement results of haze meters can serve as an important reference for determining whether the products meet the standards. By using haze meters for detection, enterprises can make their products more easily recognized by the market, enhancing their credibility and competitiveness.   With the continuous advancement of technology, the performance of haze meters is also constantly upgrading. Modern haze meters feature high precision, high stability and easy operation, which can meet the actual needs of plastic enterprises of different scales. Meanwhile, some advanced haze meters also have data storage, analysis and transmission functions, which can be seamlessly integrated with the quality management system of enterprises, improving the efficiency and informatization level of quality management.   In conclusion, the haze meter holds an irreplaceable position in the plastic industry. It is not only a loyal guardian of product quality, but also an important driving force for the continuous development and progress of the plastic industry. In the future, as the plastic industry's requirements for product quality continue to rise, the application of haze meters will surely become more extensive and in-depth, continuing to contribute strongly to the vigorous development of the plastic industry.

Multispectral camera for Agriculture: Multispectral applications

Multispectral technology, with its unique detection and analysis capabilities, has become a key force in achieving breakthroughs and innovations in many fields. This technology decomposes full-band or wide-band optical signals into multiple narrowband beams and images them respectively on corresponding detectors to obtain rich spectral information, allowing us to gain insight into details that are difficult to detect with the naked eye. From the perspective of detection accuracy, a single spectrum is like seeing with a single eye, with limited information, while multispectrum is like having multiple pairs of "eyes" for perception, which can capture light signals in different bands. So, how does multispectral technology realize these magical applications? Let's dig deeper together.   1. Principles and characteristics of multispectral technology In the process of agricultural modernization, multispectral technology is the most widely used in agricultural applications. The camera mounted on the multispectral drone can quickly scan vast farmland and accurately sense key information such as nitrogen content, chlorophyll content and moisture content of crops. Through these data, agricultural experts and practitioners can accurately analyze the growth status of crops, make accurate agricultural decisions based on the analysis results, and achieve precise variable fertilization. This not only reduces the waste of fertilizers and production costs, but also effectively improves the yield and quality of crops. When disaster strikes, multispectral drones can also capture abnormal changes in crops in a timely manner to protect agricultural production. The following is a real picture of the application of Caipu Technology's multispectral camera in the agricultural field. 2. Application of multispectral technology in agriculture In the process of agricultural modernization, multispectral technology is the most widely used in agricultural applications. The camera mounted on the multispectral drone can quickly scan vast farmland and accurately sense key information such as nitrogen content, chlorophyll content and moisture content of crops. Through these data, agricultural experts and practitioners can accurately analyze the growth status of crops, make accurate agricultural decisions based on the analysis results, and achieve precise variable fertilization. This not only reduces the waste of fertilizers and production costs, but also effectively improves the yield and quality of crops. When disaster strikes, multispectral drones can also capture abnormal changes in crops in a timely manner to protect agricultural production. The following is a real picture of the application of Caipu Technology's multispectral camera in the agricultural field. 3. Application of multispectral technology in the field of security monitoring In the field of security monitoring, multispectral technology has brought a qualitative leap to the monitoring system. Traditional monitoring equipment can often only capture image information within the visible light range, while multispectral monitoring equipment can not only perceive visible light, but also identify infrared and ultraviolet light, thereby obtaining more environmental information. At night or under low-light conditions, multispectral cameras can use infrared light to shoot and clearly present surveillance images; when detecting certain special substances or identifying camouflage, the application of ultraviolet light can play a key role, greatly improving the accuracy and reliability of security monitoring. 4. Potential applications of multispectral technology in the medical field In the medical field, multispectral technology also shows great potential. By performing multispectral imaging analysis on human tissues or diseased areas, doctors can obtain more comprehensive and in-depth physiological and pathological information. Taking skin cancer detection as an example, multispectral imaging technology can help doctors more accurately define the boundaries of lesions and determine the nature of lesions, providing a strong basis for early diagnosis and formulation of treatment plans. It is expected to increase the cure rate of the disease and improve the quality of life of patients. 5. Future Prospects of Multispectral Technology With the continuous advancement of science and technology and the in-depth application of multispectral technology, the application prospects of multispectral will become increasingly broad, promoting the development of various industries in the direction of intelligence and precision. Industry pioneers like Color Spectrum Technology are also constantly researching and applying multispectral technology. Its newly launched multispectral cameras, including FS-500, FS-600and FS-620, all have high resolution, high precision and powerful spectral analysis capabilities, which can accurately detect the growth status of crops and help intelligent and precise agricultural planting. I believe that in the future, multispectral technology will continue to bring more surprises and changes to our lives, making life better.        

Price of Multispectral Camera: Is it expensive? How to choose?

Driven by the wave of science and technology, multispectral technology has risen rapidly in many fields, from crop monitoring in precision agriculture, to disease diagnosis in the medical field, and then to quality detection in industrial manufacturing, multispectral technology is playing an irreplaceable role. However, when people want to introduce multispectral devices, the question always arises: Is multispectrum expensive? How to achieve cost-effective procurement? The following is a detailed analysis of these issues.   Is multispectrum expensive?  The price range of multispectral devices is extremely wide, which makes it meaningless to simply answer "expensive" or "not expensive". There is a significant difference in the price of multispectrum, and its price fluctuation is mainly affected by the comprehensive factors such as brand, model, performance and application field. On the market, the basic multispectral camera is mainly for individuals or small enterprises with only initial needs for spectral analysis, and the function is relatively single, and the price is usually around $200. This kind of product can meet some basic teaching experiments, simple spectral observation and other scenarios. At the other end, high-end multispectral equipment applied to professional scientific research institutions and large industrial enterprises, due to its high requirements for performance, accuracy and stability, the price is often as high as $14,000 or more. Like the FigSpec® series multispectral camera of color spectrum, including FS-500, FS-600 and FS-620, its price is different according to the configuration, the product price is usually mainly concentrated in the range of tens of $2,000, which is because the multispectral camera of color spectrum technology has a relatively rich band setting and moderate resolution. It can meet the needs of most agricultural monitoring. For some large agricultural enterprises, although this is a small expense, but considering the precision agriculture management benefits it can bring, such as improving crop yields, reducing the loss of pests and diseases, in the long run, this investment is cost-effective. For some small agricultural cooperatives or individual farmers, such prices may be beyond their reach.                                                                  Factors affecting the price of multispectral products 1,Hardware configuration differences: Different multispectral cameras have differences in resolution, number of bands, sensor types, etc. High-resolution cameras can capture clearer and more detailed images, more bands can obtain richer spectral information, and high-performance sensors can improve the accuracy and stability of data. 2.Performance parameters: the higher the spectral resolution, spatial resolution and radiation resolution, the more clearly the details of the ground objects can be presented, and the technical implementation is difficult and the cost will increase. 3.Market supply and demand relationship: the market supply and demand relationship also has a significant impact on the price of multispectrum products. With the application of multispectral technology in various fields, the market demand for multispectral products is increas-ing. However, due to the professionalism and complexity of multispectral technology, there are relatively few enterprises that can produce high-quality multispectral products, and the market supply is relatively limited. This situation of short supply has pushed up the price of multi-spectrum products to a certain extent. 4. Brand influence: Well-known brands with long-term accumulation of technical advantages, good reputation and perfect after-sales, product prices are generally high. For example, the leading brand in the industry, its product prices are often higher than emerging brand. 5. After-sales service: high-quality after-sales service, including products that provide long-term warranty, rapid technical response and professional training services. As the cost of services invested by enterprises increases, the price will also become higher.   How to choose when buying multi-spectrum? 1. Clear application requirements: Different application fields have different performance requirements for multispectrum. In the field of agriculture, monitoring crop growth, disease and insect pests, it is necessary to focus on the near-infrared and other specific bands of multispectral products that can reflect the characteristics of vegetation, so it is necessary to select the visi-ble and near-infrared bands with high precision multispectral. In security monitoring, it may be necessary to work at night or in low light conditions, then multispectral devices with infrared bands and can image in low light will be more suitable. 2. Reasonable budget planning: Before purchasing multispectrum, make a reasonable budget according to your own economic strength and project funding arrangement. It is necessary to consider not only the procurement cost of the equipment, but also the subsequent mainten-ance, upgrading and purchase costs of supporting equipment. For example, some high-end multispectral machines require regular calibration and maintenance, which also needs to be included in the budget. 3. Brand and reputation: Give priority to brands with good reputation and high reputation in the market. You can learn about product quality and user satisfaction of different brands by consulting user reviews, industry reports and consulting professionals. For example, color spectrum technology provides users with professional technical training to ensure that users can skillfully operate the equipment; At the same time, a perfect after-sales service network has been established, which can respond to the maintenance needs of users in a timely manner and solve the worries of users.   Advantages of multispectrum 1. High resolution: Compared with traditional RGB cameras, multispectrum has rich spectral information and higher resolution. Traditional RGB cameras often can only provide single-dimensional information, while multispectrum with its multidimensional spectral data, with the help of various algorithms and models, the target can be more refined classification and analysis. 2. Data complementarity and fusion: It can be fused with other types of data, such as optical images, radar data, lidar data, etc., to furth-er improve the utilization value and analysis effect of data, and to understand the target object more comprehensively. 3. Information richness: It can capture infrared light, ultraviolet light and other bands of information other than visible light, so that we can see the subtle differences and changes that the human eye cannot detect, such as in agriculture, crops can be detected by near infrared band water stress, and infrared band is used for night monitoring in security. 4. Wide applicability: It has important applications in many fields such as agriculture, environmental monitoring, urban planning, geological exploration and so on. Whether it is macro monitoring of large areas or micro analysis of object details, multi-spectrum can play a role.   The price of multispectrum varies due to a variety og factors, and you need to consider your own needs, budget, and factor such as brand and after-sales service when purchasing , Its strong advantages in various fields have provided strong support for the development of many industries. As a well-known brand in the industry, with its professional products and high-squality services, color specturm technology provides users with reliable. Multispectral solutions to help users achieve better results in their respective fields. If you have more needs for multispectrum products, please feel free to contact us.  

Three methods for color measurement

Color measurement is mainly divided into the measurement of the color of the light source and the measurement of the color of the object. The object color measurement is divided into fluorescent object measurement and non-fluorescent object measurement. In actual production and daily life, color measurement of non-fluorescent objects is widely used. It is mainly divided into two categories: visual color measurement and instrument color measurement. Among them, instrument color measurement includes photoelectric integration method and spectrophotometry method.   1. Visual method The visual method is the visual perception of light produced by the eyes, the brain, and our life experience. The light we see with the naked eye is generated by electromagnetic waves with a narrow wavelength range, and electromagnetic waves of different wavelengths show different colors The recognition of color is the visual nerve sensation caused by the naked eye after being stimulated by electromagnetic wave radiation energy. The unknown colors of the individual components are added together to describe the resulting unknown colors. Although it is most suitable for color evaluation. The way to rely on it is with the help of the human eye, and it is simple and flexible, but due to the experience of observers and psychological and physiological factors The impact of this method makes the method too many variables and cannot be described quantitatively, which affects the accuracy of the evaluation.   2.The photoelectric integration method For a long time, the density method has occupied a very high position in color measurement, but with the application of CIE1976L *, a *, b * gradually becoming widespread, and has covered the entire work flow from press to printing, people are more and more aware of color The importance of degree, and the rapid development of modern colorimetric have also laid the foundation for the objective evaluation of color by photoelectric integration instruments ( precision color difference meters). The photoelectric integration method is a common method used in instrument color measurement in the 1960s. It does not measure the color stimulus value of a certain wavelength, but measures the tristimulus values X, Y, and Z of the sample through integral measurement over the entire measurement wavelength interval, and then calculates the chromaticity coordinates and other parameters of the sample. When using such three photo detectors to receive light stimuli, the tristimulus values X, Y, and Z of the sample can be measured with one integration. The filter must meet Luther's conditions to accurately match the photo detector. The photoelectric integration instrument cannot accurately measure the tristimulus value and chromaticity coordinates of the excellent source, but can accurately measure the color difference between the two color sources, so it is also called a color difference meter. Foreign color difference meters have been mass-produced since the 1960s, and China has been developing such instruments since the early 1980s. Nowadays, the CS-210 precsision colorimeter produced by Hangzhou CHNSpec Technology Co.,Ltd has been used. CS-210 Precision Colorimeter   3. Spectrophotometry Spectrophotometry is also called spectrophotometer. It compares the light energy reflected (transmitted) by the sample with the standard reflected (transmitted) light energy under the same conditions to obtain the spectral reflectance of the sample at each wavelength, and then uses CIE The provided standard observer and standard light source are calculated according to the following formula to obtain the tristimulus values X, Y, and Z, and then X, Y, and Z are used to calculate the chromaticity coordinates x according to the formulas such as CIE Yxy and CIE Lab. y, CIELAB chromaticity parameters, etc. The spectrophotometer determines the color parameters by detecting the spectral components of the sample. It can not only give the absolute values of X, Y, Z and the color difference value △ E, but also give the spectral reflectance value of the object, and can draw the object. Therefore, it is widely used in color matching and color analysis. The use of such instruments can achieve high-accuracy color measurement, calibration of photoelectric integral color measurement instruments, and establishment of chromaticity standards. Such instruments were first developed in China. CS-600 Integrating Sphere Color Spectrophotometer is color spectrum. Therefore, the spectrophotometer is an authoritative instrument in color measurement.   Color Spectrophotometer CS-600   Company introduction Our CHNSpec Technology Co., Ltd are specialized on manufacturing haze meter, spectrophotometers, colorimeters and gloss meters. Our products have gotten 10 Invention Patents including 1 American Invention Patent, 8 Utility Model Patents, 4 Appearance Patents and 3 Software Copyrights till now.    

Objective Measurement of Transparency

Measurement and analysis of haze and clarity guarantee a uniform and consistent product quality and help analyze influencing process parameters and material properties, e.g.cooling rate or compatibility of raw materials.   The figure on the picture shows the measurement principle of the haze meter:   A light beam strikes the specimen and enters an integrating sphere. The sphere's interior surface is coated uniformly with a matte white material to allow diffusion. A detector in the sphere measures total transmittance and transmission haze. A ring sensor mounted at the exit port of the sphere detects narrow angle scattered light ( clarity). Standard Methods The measurement of Total Transmittance and Transmission Haze is described in international standards. Two different test methods are specified: 1. IS013468 Compensation method 2. ASTM D1003 Non-compensation method The compensation method takes the light reflected on the sample surface into account. Differences between the two methods can be approximately 2 Total Transmittance on clear, glossy samples.   ASTM D 1003 Measurement conditions are different during calibration and actual measurement. During calibration, part of the light escapes through the open entrance port of the haze meter. While taking a measurement, the entrance port is covered with the sample, thus, the amount of light in the sphere is increased by the light reflected at the sample surface.     ISO13468 Measurement conditions are kept equal during calibration and measurement due to an additional opening in the sphere. During calibration the sample is placed at the compensation port. For the actual measurement, the sample is changed to the entrance port. Thus, the so-called sphere efficiency is independent of the reflection properties of the sample.     Two Standard Methods in one Unit The clarity and haze meter CS-720 complies with both ASTM and ISO measurement standards. It can meet the following measurement standards ASTM D1003 / D1044, ISO13468 / ISO14782, JIS K7105, JIS K7361, JIS K7163 and other international standards. If any inquiry, you are welcome to contact us.  

Factors affecting haze measurement

What is haze? Haze is also called turbidity. It indicates the degree of unclearness of transparent or translucent materials. It is the appearance of cloudiness or turbidity caused by light scattering inside or on the surface of the material. It is expressed as the percentage of the ratio of the scattered light flux to the light flux through the material.   Why measure haze? Haze measurement can be used to quantify the optical properties of plastics and packaging films. Obscure films in packaging applications can reduce consumer perception of quality, such as when packaging products look blurry. For plastics with haze, the visibility of the test material becomes more pronounced and reduces the contrast of the observed objects.   Factors affecting haze measurement Part1: light source Different light sources have different relative spectral energy distributions. Because various transparent plastics have their own spectral selectivity, the same material is measured with different light sources, and the obtained light transmittance and haze value are different. The darker the color, the greater the impact.In order to eliminate the influence of the light source, the International Institute of Illumination (CIE) has specified three standard light sources A, B, and C. This method uses a "C" light source.       Part2: Influence of surface condition The surface state of the sample mainly refers to whether the surface is flat and smooth, whether there are scratches and defects, and whether it is contaminated.       Part3: Effect of specimen thickness As the thickness of the sample increases, the light absorption increases, the light transmittance decreases, and light scattering increases, so the haze increases. Transmission and haze can only be compared at the same thickness.  

How to calculate haze of transparent acrylic plastic sheet?

What is acrylic sheet? Acrylic is also called special-processed plexiglass. It is a replacement product of plexiglass. The light box made of acrylic has good light transmission, pure colors, rich colors, beautiful and flat, taking into account the two effects of day and night, long life, does not affect the use, and other features.   How to calculate transmittance? In the process of measuring the haze and light transmittance of the sample, it is necessary to measure the incident light flux (T1), the transmitted light flux (T2), the scattered light flux (T3) of the instrument, and the scattered light flux (T4) of the sample. Calculation method of Transmittance: Tt= T2/ t1x100%   How to calculate haze? Haze: H= [t4-t3 (T2/T1)]/ t2x100% The formula of haze value H can be simplified as: H(%)= [(T4/T2)-(T3/T1)]×100%   How to Measure Acrylic Plastic Sheet?(The products that measure haze are Color Spectrum TH-100, CS-700, CS-701 and CS-720) Take Color Spectrum Haze Meter TH-100 as an example 1.Start Connect the instrument to the power source, press the power key, the indicator light is always blue, and the instrument starts normally. 2.0% and 100% calibration. Put the 0% calibration cover on the test port so that the integrating sphere does not receive any light. Press the OK key on the side of the instrument to calibrate.100%: Keep the test port open, let the light from the light source pass through the test port, and press the OK key on the side of the instrument for calibration. 3.Measure After calibration, place the transparent acrylic plastic sheet in the test port and click the test button next to the instrument. The result will be available in 2 seconds. The operation process is very simple.  

Colorimeter and spectrophotometer

Colorimeter A colorimeter is a tristimulus color measurement tool that provides an objective evaluation of color characteristics based on light passing through the primary filters of red, green, and blue. It simulates how the human eye percieves color.   How it works? Using an internal light source, a colorimeter shines light down onto the surface of the sample. As the light reflects back up to the device, it passes through three filters: red, green and blue. These filters distill tri-stimulus (RGB) values that match how our eyes see color. colorimeter applications: Colorimeters can be used to test the surface color of objects. They’re also used to specify color. Designers can carry them around to capture inspiration colors for use in their designs. However, colorimeters are limited in their capabilities. Since they are blind to metamerism (a common phenomenon that occurs when two colors appear to match under one lighting condition but not when the light changes), they aren’t ideal for all production applications, especially formulation.   Spectrophotometer A spectrophotometer is a more complex color measuring instrument that factors in light intensity as a function of the color. It performs full-spectrum color measurement, as opposed to a colorimeter’s tristimulus procedure, and generates color data that’s beyond observation by the human eye.   How it works? A spectrophotometer works almost same way, except for one main difference – the filters. Instead of using three filters to determine the RGB values, spectrophotometers typically have 31 filters to measure the full color spectrum of visible wavelength range. These filters measure light in each of 31 different wavelengths to determine the color of the sample. Spectrophotometers come in many shapes and sizes, from small handheld devices to large benchtop, to in-line devices used during manufacturing production. Since they can evaluate how color will be under different light sources, spectrophotometers are ideal for identifying metamerism.       Spectrophotometer applications: Spectrophotometers can measure just about anything, including liquids, plastics, paper, metal and fabrics. There are three primary types 45º/0º instruments present light at a fixed angle to the sample, and can exclude gloss to most closely replicate how the human eye sees color. They are commonly used for measuring color on smooth or matte surfaces. A spherical instrument presents diffused light and can measure both excluding gloss (SCE) and including gloss (SCI). They are commonly used for measuring color that has been applied to textured surfaces such as textiles, carpets and plastics, as well as shiny or mirror-like surfaces, including metallic inks, printing over foil, and other highly glossy surfaces.A multi-angle spectrophotometer presents light at a single angle but measures at multiple angles – It is essentially used for color measurement of metallic and pearlescents pigment such as nail polish and automotive coatings.     Colorimeter Vs Spectrophotometer Colorimeter Spectrophotometer An instrument for psychophysical analysis which provides measurements that correlate with human eye-brain perception. Colorimetric data directly read and provide tristimulus values such as XYZ, L, a, b, etc. An instrument for physical analysis which provides wavelength by wavelength spectral analysis of reflecting and/or transmitting properties of objects without interpretation by human. It can indirectly calculate psychophysical information. It consists of sensor and data processor. It consists of sensor plus data processor or computer with application software It has a set illuminant and observer combination usually D65/10° It has many available illuminant/observer combinations which can be used for calculating tristimulus data and metamerism index. Extract tristimulus (RGB) values that match the colors seen by our eyes and convert to LAB It isolates narrow band of wavelengths using prism/grating/interference filter. It is more simple instrument. It is more complex compare to colorimeter. It works well for routine comparisons of similar colors and for adjustment of small color differences under constant conditions. It works well for color formulation, measurement of metamerism and variable illuminant/observer conditions. Examples of colorimeter instruments: HunterLab D25 series, ColorTrend HT Examples of Spectrophotometer instruments: HunterLab ColorFlexes, COlorQuests, LabScans, MiniScans, SpectraProbes, UltraScans

Haze meter theory

What is haze? Haze is also called turbidity. It indicates the degree of unclearness of transparent or translucent materials. It is the appearance of cloudiness or turbidity caused by light scattering inside or on the surface of the material.   What is transmittance? It is expressed as a percentage of the ratio of the luminous flux transmitted through the material to the incident luminous flux. Usually refers to the standard light source of a beam of parallel light perpendicular to the film, sheet, plate-shaped transparent or translucent material, the ratio of the luminous flux(T1) transmitted through the material and the incident light flux (T2)to the transparent material.   Relationship between haze and transmittance Two very important optical performance indicators of transparent materials, such as aerospace plexiglass require light transmittance greater than 90% and haze less than 2%. Generally speaking, materials with high light transmittance have low haze value and vice versa, but not completely.. Some materials, such as ground glass, have high light transmittance and high haze values. So light transmittance and haze are two independent indicators. Test principle When testing, when there is no incident light, the received light flux is 0. When there is no sample, all the incident light is transmitted, and the received light flux is 100, which is T1; At this time, the parallel light is absorbed by the light trap, and the received light flux is the scattered light flux T3 of the instrument;Then place the sample, and the instrument receives the light flux through the sample as T2; At this time, if the parallel light is absorbed by a light trap, the light flux received by the instrument is the sum T4 of the scattered light flux of the sample and the instrument.Based on the measured values of T1, T2, T3, and T4, light transmittance and haze can be calculated.   Transmittance:        Haze value:   Why measure haze and transmittance? The first is the screen industry. In the screen industry, companies like screen covers, light guide plates, and diffuser plates have very high requirements for these two parameters. Second, the glass industry, whether it is outdoor or indoor, glass products have light transmission performance. The requirements are very high, the haze of the glass needs to be very low, and the transmittance is high; and the film industry is very widely used.                                          cellphone screen                    watch   How haze meter working theory? This is the light path structure diagram of this haze meter. The light source emits parallel light, passes through the sample and enters the integrating sphere. Part of the transmitted light is parallel light and part is scattered light. A photoelectric sensor is installed on the inner wall of the integrating sphere perpendicular to the parallel beam to obtain the light flux signal. The light trap is used to absorb all the incident light when there is no sample in the test port. The light trap is equipped with a shutter, which is coated with the same high reflectivity coating as the integrating sphere wall. The shutter can be opened and closed as required. Light trap: When measuring the haze, the light trap will open (because the scattered light will be collected to calculate the haze); when measuring the total transmittance, the light trap will be closed; haze meter can be automatically measured, all you have to do is place the sample at the test    
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