Spectroscopy is a method of identifying substances and determining their chemical composition and relative content based on their spectra. It is an analytical method established on the basis of molecular and atomic spectroscopy which called spectroradiometer. Contains three main processes: ①energy provides energy; ②energy interacts with the measured substance; ③produces the detected signal. ...
Goniophotometer is mainly used to measure the spatial distribution of light intensity and color space of lamps, and output various measurement reports according to the test report: When a lamp is lit, its light output in the 4π space with the lamp as the center of the sphere is not exactly the same, that is, the light intensity value of each point on a certain spherical surface is different. For ...
The salt spray test is divided into two categories, one is the natural environment exposure test, and the other is the artificial accelerated simulated salt spray environment test. The artificial simulated salt spray test is to use a kind of test equipment with a certain volume space-the salt spray test chamber, in its volume space, artificial methods are used to create a salt spray environment ...
When you check the RoHS test compliance, It must be noted that the analysis values of x-ray fluorescence light provide information on the presence or absence of controlled substances in elemental form. Must pay special attention to such as Cr and Br, the result is total Cr and total Br, and does not reflect the form of its existence. Therefore, if Cr and Br are present, hexavalent chromium, PBB, P...
The integrating sphere is a cavity sphere coated with a white diffuse reflection material on the inner wall, also known as a photometric sphere, a luminous sphere, etc. One or several window holes are opened on the spherical wall, which are used as light inlet holes and receiving holes for placing light receiving devices. The inner wall of the integrating sphere should be a good spherical surface,...
In recent years, semiconductor lighting technology has developed rapidly, and subsequently semiconductor lighting lamps have also been greatly developed. This requires corresponding testing theory, testing technology, testing equipment, and testing standards to test and evaluate emerging new products. Vertical Goniophotometer is the core testing equipment of lighting fixtures. It is usually divide...
Application: The horizontal and vertical flame tester UL94 is mainly used to determine the combustion performance of plastic, rubber or film under a specified fire source to determine its fire resistance level. It is not only suitable for the research, production and quality inspection departments of electrical and electronic plastic or rubber products and their components such as lighting equip...
The static electricity generated by the human body to the object or between two objects may cause the electrical and electronic equipment circuits to malfunction or even be damaged. Therefore, tests that ESD test are widely used all over the world. The intelligent ESD test gun fully meets the standards IEC61000-4-2 and GB/T17626.2. The ESD test has direct discharge and indirect discharge methods. ...
There are several common goniophotometers for light distribution. The difference between them lies in the geometric shape of the measurement, that is, how to collect photometric data and how to mechanically realize the measurement. The types of Goniophotometers can be basically divided into Type A, Type B and Type C. For a detailed description, please refer to the 1987 edition of CIE 70. The diffe...
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