Vektrex to show the trend of LED and LED standards

In general we measured LED chip, LED element, the integrating sphere and other ways to measure, but the power, LED will generate heat, if measured in accordance with the past, long light, have good performance when bad, or is the problem of uneven luminous efficiency, which is subject to continuous the heating temperature affects the results, how will not produce measurement error? LED has become a research and development, the standard industry concerns.

In March 2016 the Taiwan TILS lighting technology exhibition, the famous American LED test equipment solutions provider Vektrex display technology, LEDinside interviewed the company's technology Jeff Hulett and CEO Melissa Ford, VEKTREX CTO was also invited to organize IES main members identity is famous for high power LED standard, published relevant standards released international, help readers grasp the LED amount of the latest LED Standard Test and trend.

Vektrex long Jeff Hulett and CEO Melissa Ford

The main content of LED LEDinside was observed on the market test equipment, the two brands are the most popular Systems Instument all agents, and the famous labsphere (Labsphere Inc), they are taking the optical detection device integrating sphere as the core of the application in LED research field, and the proportion of laboratory verification unit high. The object of this interview is the United States LEDinside Vektrex Electronic System Inc., and the company is the system of electrical and electronic equipment manufacturers collocation, the main product is the SpikeSafe direct current source, reliability test with temperature control box, semi automatic LED optical measuring system and electromechanical system customization and so on, they are including OSRAM (OSRAM) PHILPS (Philips) equipment supply long-term partner.

Vektrex SpikeSafe DC/Pulse power supply system

Vektrex CEO said, and they can provide long-term cooperation, is the main current source system with high precision and stability, and the general lighting, point out the current source management system, can be very short, light off time, improve the measurement precision, lower error rate.

At present, if the LED measurement industry does not use a stable current source to do the test, the average measurement error rate is 4% or more. Vektrex CTO and Jeff Hulett, to 100 lumens the numerical point of view, the 4% error will be 96 or 104 lumens, even greater error, so the correct lumen output, for the design of lighting system, measurement and standards is very important.

Many LED related optical and electrical properties are highly correlated with temperature variations. The value of a LED element output lumens, will vary with the temperature. Early LED testing standards are used to reduce the effects of temperature in different ways, including long term stability testing, etc.. With the rise of the LED power and the improvement of the efficiency, the error value of the traditional test method will be larger.

The industry needs to improve the situation, the international IES organization to improve the LED measurement method, and set a new standard to reduce the LED error during measuring the resulting, do one hundred lumens is one hundred lumens, almost no numerical error standard.

The Vektrex SpikeSafe DC/Pulse current source products, has been widely used in the world's major measurement standard of LM-80 and IES in the laboratory, the new LM-85 standard, currently by the industry's attention and affirmation, and to meet the test standard of LM-85, it was better to use the current source collocation integral ball.

The stability of the current can be used in a very short period of time to light up the ultra high power LED, to ensure the accuracy of the measurement, will not be subject to continuous lighting temperature caused by excessive measurement error.

The DC output constant current DC voltage for the principle, with accompanying changes of dynamic adjustment, dynamic adjustment of the upper Vdc application called CV, Compliance Voltage. SpikeSafe (form factor) the appearance of the current source can be divided into modules (module) and single style (desk-top) style two, integral ball, optical current SpikeSafe Instument and Labsphere Systems collocation use measuring instruments, for example the common industry Instrument Systems CAS140spectrometer, there is a good API, can through the software in the computer see the correct measurement results of stability.

At present, the company's products are Vektrex (Hsuminic) agent

For more information about LED, please click on LED network or pay attention to WeChat public account (cnledw2013).