LED is short for light emitting diode. It is one kind of semiconductor diodes, which can convert electrical energy into energy. With the technology development, LED lighting applications are more and more. How is the development trend in future? For lamps, it mainly has intelligent lighting, agricultural and horticultural lighting, wireless control device and people-oriented lamps. Lamps combine w...
Combination wave generator is a high reliability analog lightning surge wave generator designed for lightning production enterprises. It is suitable for Electromagnetic compatibility (EMC) – Surge immunity test. It can test impact current absorption capacity and impact current anti-jamming capability for related electronic components, overvoltage protector, electrical circuit etc. To assess ea...
Nowadays, there are two main categories of LED light sources classified according the forms on the market, one is COB integrated light source directly combined of multiple chips, the other one is SMD made by a single LED light source pasted on the PCB. Characteristics of light source: There are both advantages and disadvantages between the two kinds of light sources. For COB integrated light sourc...
Lisun LMS-6000 Portable color spectroradiometer is the only one used telephoto optical system in portable spectrometer spectral radiometer, spectral resolution is 0.2nm, which can measure LED wide spectral light source and also can measure CFL, HID narrow spectral light source. It can be calibrated automatically by itself. Do not worry that the dark background changed affects the measurement resu...
Summary: Compared with common integrating sphere, the all-new 3m integrating sphere has many improvements. LISUN engineers add the infrared anti-pinch device, the cross laser positioning and adjustable multifunctional holder base in the integrating sphere. The world famous company Sharp Laboratories of America and some other European companies have purchased the 3m integrating sphere. Here ...
IES TM-30-15 is a document approved by the Illuminating Engineering Society (IES) that describes a method for evaluating light source color rendition. The method encompasses several individual measures and graphics that complement one another and provide a comprehensive characterization of how the light will affect the color appearance of objects. The three highest-level components of the system a...
LED luminaries consist of LED power driver, single LEDs and fixtures, which the LED power driver is like the heart of human, so it is the key part. Since the LED is sensitive semiconductor device and also has the negative temperature characteristics, it needs to be applied in steady state operation and protection in the application, resulting in a drive concept. LED devices is strict with LED powe...
LED manufacturers must learn some basic luminaries’ parameters such as brightness, spectrum and color temperature and so on as standard to identify pros and cons. We will introduce following LED lighting products normal parameters and tell you how to design and improve LED lighting products. 1、Brightness/Luminance Brightness/luminance L: Luminance is the luminous flux per Unit solid angle per ...
As the basic test equipment to measure LED luminaries or other lighting product’s performance, the photometer & integrating sphere system has been used at lighting industry for many years. The first generation test instrument is photometer, then single-monochromator spectrocolorimeter, double- monochromator spectrocolorimeter and developed array CCD spectroradiometer in now days, the lightin...
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