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Definition and analysis of LED efficiency
21 Apr, 2018 610

Definition and analysis of LED efficiency

Compare LED efficiency and life, the conception of efficiency is more complex. Firstly, there are three kinds of general efficiency, please check the Diagram 1.   Luminous Efficiency(lm/W) Conversion Efficiency lamp beads Connect lamp beads to DC power source directly, the rate of lamp beads flux and consumption power Connect lamp beads to DC power source directly, the rate of light powe...

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Too slow for LED aging? Try this!
01 Jan, 2017 433

Too slow for LED aging? Try this!

LED has the features of long life, but with the different working condition and drive current, its life will be different, but generally the life will be around 50K hours. Differ from the traditional lightsource, LED light will decay gradually rather than extinguish instantly. According to the standard IES-LM-80, IES-LM-82 and TM-21, the requirements of the test cycle is generally 6000hr, and it i...

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LED Lighting development in future
01 Jan, 2017 486

LED Lighting development in future

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...

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The Difference between LED Light Sources
01 Jan, 2017 394

The Difference between LED Light Sources

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...

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How to Choose the Right LED Lighting with Appropriate Color Temperature?
18 Jul, 2016 468

How to Choose the Right LED Lighting with Appropriate Color Temperature?

Different color temperature will give us a different feeling. In a different environment with the same brightness, the object’s color we can see will be a great difference. It is not difficult for us to find that there are different colors when we go to different places. There are also different color temperatures in different environment, which will also bring us a different mood. In commercial...

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Why need Auxiliary Lamp and how to use Auxiliary Lamp correctly?
27 Feb, 2015 569

Why need Auxiliary Lamp and how to use Auxiliary Lamp correctly?

According to IESNA-LM-79-80, when spectroradiometer integrating sphere system tests LED flux, light source’s self-absorption can influence test result, therefore, it usually introduces Auxiliary Lamp. The induction of absorption Auxiliary Lamp can solve the absorption problem of the tested lamp itself. How to use Auxiliary Lamp correctly? Lisun LPCE-2(LMS-9000A) High precision Spectroradiomet...

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LMS-9000A Spectroradiometer New Functions Introduction
17 Jan, 2015 460

LMS-9000A Spectroradiometer New Functions Introduction

As we known that the quality of LED products depend on lumen, lumen efficiency temperature and CRI etc parameters, the general test device is application with spectroradiometer & integrating sphere system to measuring electrical, photometric and colorimetric parameters. This system mainly testing lumen, CCT, CRI, spectrum, SDCM, voltage, current, power and power factor etc. As general test dev...

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Color Rendition Index CRI
12 Jun, 2014 566

Color Rendition Index CRI

Light object by the lighting source and standard source(Generally, sunlight is as the standard source), the degree consistent with color is the color fidelity degree, represented by Ra, the maximum value is 100. As an important index to measure the quality of lighting, Color Rendition Index (CRI) is related to the color reduction degree of lamp to object itself, CRI is higher, the color of object ...

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