New Standard Will Aid in Color Calculation of Objects ASTM International’s color and appearance committee (E12) has approved a new standard that will be useful in calculating the colors of objects. The new standard (E3415) expands on color calculations described in ASTM’s standard on CIE colorimetric systems (E308). According to ASTM member Hugh Fairman, E308 gathered data and pre-calculated weight sets for doing what is called "tristimulus integration," which determines the actual color of a measured spectral reflectance or spectral power curve. While this standard is still useful in certain cases, a need has grown for the more updated practice described in E3415. “With the advent of new spectral power distributions, such as LED lighting, and access to additional data-describing observers, such as variation in age and yellowness of lens and retina which are now available, it has become necessary to provide a method for tristimulus integration that lends itself to the use of these custom data sets,” says Fairman. Fairman notes that, while both E3415 and E308 can be used to obtain identical color information if one starts with identical illuminant and observer data. However, the methods of putting together the sets are different in the two standards. “There is a section in the new standard that compares the operations of the methods utilized in each of the standards,” says Fairman. “So, while E308 will remain useful well into the future for persons doing routine color control, E3415 will provide means for persons on the cutting edge of color to expand their options into custom illuminants and observers. This will allow them to obtain color information by a consensus-standard methodology such that others using the method will obtain identical color data using identical input data.” #Color #Paint Article courtesy - ASTM International https://lnkd.in/d9t3uT_6
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What is the #CIE L*a*b* color space? "CIE" refers to an authoritative international organization on #colors, lighting, etc. The specific representative is the #International #Commission on #Illumination. Lab is composed of a luminance channel and two color channels. CIELAB color space is a device-independent, "standard observer" model. The colors it defines are not relative to any particular device such as a computer monitor or a printer, but instead relate to the CIE #standard observer which is an averaging of the results of color matching experiments under laboratory conditions. 1. "L" represents brightness The larger the value of L, the brighter. The smaller the darker. The range of this value is approximately 0-100. When the value is 0, it represents black and when the value is 100, it represents white. 2. "a" stands for red and green The value from negative to positive is the evolution from green to red. 3. "b" stands for blue and yellow The evolution from negative to positive is the evolution from blue to yellow.
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Having difficulty locating the fire? Consider the power of an investigative mode color palette! These optional application modes, such as Survey Mode displayed here by Seek Thermal colorize temperatures earlier than standard TI Basic color palettes. In these two examples, we compare TI Basic vs Survey Mode: * TI Basic colorizes temperatures beginning at 302 degrees Fahrenheit/150 degrees Celsius. *Survey mode colorizes temperatures beginning at 150 degrees Fahrenheit/65 degrees Celsius. By identifying convection currents, we can determine the fire's direction and severity. By identifying colorization earlier, it can identify areas toward the fire or areas that need to be cooled that may go unnoticed due to gray scale. Learn your thermal imaging camera's color temperature correlations and act accordingly. Stay Intelligently Aggressive! Photo credit JB photo
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Development Manager at Jinuosh Technology | VMM | SEM | Microscopes | Flash Measuring Systems
👋👋Hello my friends! Excited to share the light source of #VMM💡 There are three main types of light sources: #surfacelight, #contourlight and #coaxiallight. ①Surface light🧐, generally ring or point lighting, ring light for the commonly used surface light illumination👉 easy to install, can provide bright illumination to the diffuse reflective surface. The current trend in the application of the secondary image #measuringinstrument is to use a ring of surface light to provide surface illumination in multiple directions and angles of incidence. Each ring of light incidence angle are different, to ensure that in the measurement of different workpieces have different ways of illumination, so as to make the binary image measuring instrument measurement to achieve good results, especially for👉 #knifemoulds, #laserengraving, industrial double-sided adhesive tape and so on the measurement of a good auxiliary role. This light source is generally equipped with a fully automatic binary image measuring instrument machine, CNC automatic measurement, the binary measuring instrument itself will correct the dimming. ②Contour lighting🧐, as the name suggests, places the light source at the back of the object, which is very different from other lighting methods because the image is analysed not by reflected light but by incident light. Contour lighting produces a strong contrast, when the characteristics of the surface of the object will be lost, but you can clearly see the surface of the object contour, so contour lighting is called contour light source, contour light so that the translucent and opaque parts of the distinction. ③Coaxial light🧐, mainly used for high reflectivity workpiece measurement, choose the coaxial surface light source, you can get a variety of workpiece very good observation effect, the boundary is clear. It can easily realise the measurement of cross section with large hole depth and thickness, such as the width #measurement of cylindrical ring groove and the tooth shape measurement of thread. 👍The above are a few of the more commonly used light source of the secondary measuring instrument, we must choose the appropriate light source according to the characteristics of the measurement of the workpiece in order to make the imaging clearer and improve the accuracy of the measurement. For more information about secondary measuring instrument, secondary image measuring instrument, welcome to consult #Jinuosh.
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#Filters #SAW #RF #ECE #RFdesign #BPF #Microwave SAW Filters Made of peizoelectric crystal, a surface acoustic wave (SAW) filter is a tiny, passive device. A band-pass filter is what most SAW filters are. Imagine a thin piezo-electric crystal that is rectangular in shape. It has a flat top surface. When an electric field is applied, the crystal grows and shrinks. A voltage that corresponds to the frequency and amplitude of the shiver develops across the surfaces of the crystal as it shakes. When the right frequency sinusoidal voltage is applied to a crystal with electrodes placed on both the top and bottom surfaces, the crystal will resonate. This resonance is used by crystal oscillators to provide a frequency that is precisely equal to the crystal's size and flatness. A SAW filter does not use bulk resonance of a crystal. It uses surface acoustic waves. Instead of electrodes on opposite faces of a crystal, the SAW filter has two interlocking combs of electrodes on one end of the crystal surface and another two such combs at the opposite end, but on the same crystal surface. We connect our input across these combs, as shown in the figure attached. The combs set up electrical fields along the surface of the crystal, instead of within the bulk of the crystal. The electric fields cause the surface of the crystal to expand and contract. If we apply a sinusoidal voltage across the input electrodes of just the right frequency, we will create a surface wave that propagates across the crystal, where it creates a voltage across the output electrodes, which are also interlocking combs. We can clearly see that only frequencies with a whole number of wavelengths between the teeth of each comb will be reinforced as they propagate across the comb fingers. The result is a filter: only frequencies that match the combs at both ends will be transformed from electrical signals into surface wave signals and back to electrical signals again.
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#article: What is flexographic? https://lnkd.in/dKQMtGbM
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Self-calibration is only one of many features the Spectro in-line color measuring system has. Discover more here: https://lnkd.in/dUZrgtsM
Spectro excels at in-line #color measurement, delivering #accuracy irrespective of ambient light or product surface, all without direct contact. Its self-calibration employs automatic white balance correction, ensuring consistent and stable measurements. To read more about our innovative In-Line #qualitycontrol solution, click here: https://lnkd.in/dUZrgtsM
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OPTICAL CALCULAS :-> https://lnkd.in/gFew6b6g optical calculas totally depend on two or multipe light reflection on mirrors and then anglles between then by then we measure by y axis and x axis then by that way angle creates then dy/dx cretaes colour full angle two optical angle willl not be angle to each other men two colours green light angle thata is 30 is not euqlat to yellow or red light angle thta is degrees why because all light that is differ in colours have different means eahc light have ntruall different time surfface by different time urafce have different colours by diffferent colours have on time diferent angles so on time urface two different colours same angle are different angles
