Integrating Sphere plays the role in below three aspects. 1. Optical Receiver The measured light enters the sphere through the hole of integrating sphere. We set up one or two photo detectors on the inner wall such as selenium photovoltaic cells or photomultiplier tubes. The output light detector of the photo detector is proportional to the illuminance of the integrating sphere inner wall, which ...
Recently, there have a new that the China Consumer Association announcement computer failure excessive radiation harassment, that easy to affect the power grid equipment and cause computer crash. The main reason is that computer power terminal radiation harassment beyond the limits specified in the national standard, and this harassment may interfere with other electronic devices work properly, e...
OLED (Organic Light Emitting Display) is a new generation of flat panel display technology after LCD, LED, CRT and PDP (Plasma Display Panel). It has significant new industry characteristics. OLED is a new type of pure solid (CRT and PDP), which is a new type of pure solid (and LCD) with advantages of LCD and CRT. Besides, OLED has advantages of self luminous (no back light source), simple struct...
Surge generator anti-interference measurement is based on the international standard IEC 61000-4-5. SG61000-5_Surge Generator 1 Test objective The entire lightning stroke in the nature (namely the indirect thunder such as the lighting stroke between the clouds, or the lighting stroke happened to the adjacent objects) can induce the surge voltage and current in outdoor aerial. Besides, huge surge ...
Abstract: According to the particularity of LED luminous flux measurement, unique optimization is adopted in the design of the integrating sphere for LED measurement combined with the diffuse materials of high reflectivity, which makes the system stability and accuracy have great improvement. The experimental results show that the system stability and consistency is much higher than other commo...
Goniophotometer is mainly used for measuring photometric characteristics of luminaries and light source; that is luminaries laser photometric and colorimetric value distribution in different spatial directions. Goniophotometer should be placed to do test in dark room. Many customers concern the size of goniophotometer. According to Energy Star IESNA-LM-79 Clause 10, For measurement of luminous int...
LISUN can provide very fine Photo Detectors. They are NIM traceable (directly compared with NIM standard head) and is validated to PTB of Germany. Photo Detector Problem of the part filtering technology: the tested light on the photo detector must be strictly uniform, otherwise even for a so called f1’=0.5% photo detector, its actual f1’ may exceed 10%. Full-filtering technology: in order to a...
At present, LED and LED lamps and lanterns can’t achieve ideal service life due to the reason of the performance of LED. The LED junction temperature in the working status is not only the direct key to its life and efficacy, but is also influenced by the thermal resistance under the same service conditions. The feasibility of the heat conduction system design of LED also directly affects the li...
When choosing the instrument to purchase or use for the application, it is very important to understand the types of instruments available for measuring color. A colorimeter or spectrophotometer can be used to measure any test substance that is itself colored or can be reacted to produce a color. Both colorimeter and spectrophotometer provide data obtained over the same range of visible wavele...
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