Welcome to Qinsun Instruments Co., Limited.
2023-08-15 0 Views

Light source start-up time-stroboscopic test: key technology to improve product quality

With the evolution of LED technology, the LED market is booming, and its advantages are mainly hinged on its good luminous efficiency and long life As well as reliability, it is favored by the market and consumers. However, due to the fast response speed of LEDs and the lack of thermal inertia and afterglow effect of traditional lamps, they are affected by current fluctuations, which will directly affect the output of luminous flux, resulting in flickering of LED lighting products. To this end, on December 14, 2012, the European Union issued Regulation (EU) NO 1194/2012, that is, Directive 2009/125/EC of the European Parliament and the Council of the European Union on directional lights, LED lights and related equipment Implementation Rules for Eco-design Requirements, in order to correspond to Regulation (EC) No. 244/2009 issued by the European Commission on March 18, 2009, to form a complete mandatory eco-design requirement for LED lights. Start-up time and rise time as two functional requirements indicators are becoming more and more important, and are valued by manufacturers in the industry. Therefore, the development of lamp start-up, rise time and strobe test received widespread attention. 5WTTextile Testing Instruments, Testing Equipment Manufacturer

LSRF-3_Light source startup-rising time-stroboscopic test system5WTTextile Testing Instruments, Testing Equipment Manufacturer

5WTTextile Testing Instruments, Testing Equipment Manufacturer

LED lighting products are essentially composed of AC or pulsed DC Driven by the driving power supply, resulting in fluctuations in luminous flux, which will lead to obvious periodic changes in illuminance or brightness, which is the so-called stroboscopic effect. And this stroboscopic effect, there are visible and invisible, visible stroboscopic occurs below 100Hz, it will cause eye fatigue, headaches, etc.; and greater than 100Hz, it will not cause visible stroboscopic, but may still cause Eye fatigue, headaches, etc. Generally speaking, the frequency of LED lighting products should be kept below 500Hz to prevent the above side effects. Play an irreplaceable role in the test. 5WTTextile Testing Instruments, Testing Equipment Manufacturer

The light source stroboscopic measurement requirements stipulated by ENERGY STAR (V1.0), namely: the frequency is not lower than 120Hz, the F1 value within the frequency range of 120-800Hz is less than 0.001 times the specified frequency, and the frequency is greater than 8There is no requirement for the range of 00Hz. When the frequency is uncertain, the PF value is less than 30%. The light output frequency of the compact fluorescent lamp (Fluorescent lamp) needs to be 20-30KHz or greater than 40KHz. ENERGY STAR (V1.0) requires that when measuring light source flicker, the power supply and measuring instrument must comply with the LM-79-19 standard, and an attenuation probe must be added to a multi-channel oscilloscope with storage function, the sampling rate is greater than 2KHz, and the sampling time is greater than 100ms, the photometric detector needs V(in) correction, the response time also needs to meet the requirements, and an integrating sphere is needed when measuring the absolute value; when measuring the relative value, it is necessary to ensure that the detector can measure the relative light output, and only the light source to be tested The emitted light is received. When testing compact fluorescent lamps, it needs to go through 100 hours of aging, and it also needs to be heated before testing; while LED lamps do not need aging, and the ambient temperature is required to be 25+/-5 degrees Celsius. 5WTTextile Testing Instruments, Testing Equipment Manufacturer

LSRF-3Luminaire start-up, rise time and stroboscopic test system developed by LISUN is applied to meet the requirements of EU Erp indicators and the safety requirements of IEC60969S self-ballasted lamps for general lighting And energy star certified LED lamp start time, rise time, strobe test. LSRF-3 equipment can meet users' testing requirements for various LED lamps, and provides users with a fast, accurate and reliable testing solution. 5WTTextile Testing Instruments, Testing Equipment Manufacturer

5WTTextile Testing Instruments, Testing Equipment Manufacturer