Due to the LED luminaries such as LED street luminaries developed, to do 4π geometry testing, it is hard to be hold in the traditional integrating sphere design. To solve this problem, Lisun design a new kind of sphere. New Integrating Sphere Design 1. The hold base can bear max 20kg, it can expanding to test all lamps such as E27/E40, all tubes such as T5/T8/T12, and all kinds of lumina...
LED testing equipment mainly has Goniophotometer and Integrating Sphere Spectroradiometer System. Goniophotometer is used for light intensity distribution measurement; integrating sphere spectroradiometer system is used for flux and colorimetric measurement. So how maintain these lighting test equipments? Integrating Sphere maintenance: Inspect and clean the external of integrating sphere, such...
LISN is short for Line Impedance Stabilization Network. LISN is important assistant equipment for EMC test in the power system. It can isolate the disturbance from power grid, provide stability test impedance and pay the role of filtering wave. LISN net is based on filter theory. When spectrum interference is different from the useful signal band, filter out the unwanted signal by filter. Proper d...
A lamp is composed of one or more luminous light sources with a shell (namely lamps, for example, some down lamp can be installed in one tube or two tubes). The light source and lamps can be separated. Nominal flux of each light source: it refers to the Nominal luminous flux of each light source installed in the Test lamps. It is expressed as φNominal Test flux of each light source: it refers to ...
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...
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