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Lumen test difference between integrating sphere and goniophotometer
16 Jul, 2015 6716 Author: root

Lumen test difference between integrating sphere and goniophotometer

As well as we know that for the LED luminaires lumen test, the CIE121: 1996 Clause 6.1, CIE127-2007 Clause 6.2 and IES-LM-79-08 Clause 9.0 are mentioned two luminous flux test method: the first is adoption integrating sphere+photometer or spectrometer(recommend by CIE121: 1966 Clause 6.1.1, CIE127-2007 Clause 6.2.and IES-LM-79-08 Clause 9.0), this kind of test method is relative measurement method...

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LISUN on HKTDC Hongkong Lighting Fair
26 Jun, 2015 2578 Author: root

LISUN on HKTDC Hongkong Lighting Fair

It is the second time we have attended the fair, and it is a successful and wonderful fair. Lisun’s booth attracks numerous people’s visit. ...

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LISUN Products in Seoul International LED & OLED Exhibition 2015
26 Jun, 2015 2496 Author: root

LISUN Products in Seoul International LED & OLED Exhibition 2015

Lisun agency in Korea attended the exhibition last week. The exhibition is organized every year in KINTEX since 2003. It is one of the most influential LED exhibitions over the world now. Lisun will attend more and more international exhibitions, including Gemany, Korea, India, Russia, Turkey, etc. Chinese customes data shows that, Lisun’s products have already sold to over than 80 countries and...

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LISUN on the 2015 HKTDC Hong Kong Lighting Fair
26 Jun, 2015 2450 Author: root

LISUN on the 2015 HKTDC Hong Kong Lighting Fair

During the exhibition, Lisun showed its main instruments which attracted many customers to stop and talk. Among them, there are not only many old customers hope to establish a new cooperation, also many new customers want to know more and start to cooperate with Lisun. Lisun will keep continue provide “Right Products, Right Price and Right Service” to all the customers.Here are some photos tak...

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Two test way for High Frequency Adjustable Reference Ballast(25KHz)
18 Jun, 2015 4649 Author: root

Two test way for High Frequency Adjustable Reference Ballast(25KHz)

HCS-109A has two functions: one is high frequency ballast; second is high frequency digital power meter. As above picture show, after we connected instrument with test samples, high frequency constant power source will output high voltage to start test lamp (tube), high frequency constant power source output frequency range is 20KHz-26KHz, it can provide continuously adjustable current 100mA-500m...

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Research of the Optical Parameter’s Test Accuracy on Integrating Sphere Reflective Coating and the Installation Position of LED lighting
08 Jun, 2015 2513 Author: root

Research of the Optical Parameter’s Test Accuracy on Integrating Sphere Reflective Coating and the Installation Position of LED lighting

During the measurement of luminous flux with integrating sphere, comparing with common lighting source, the luminous flux test accuracy of LED lighting source have given huge challenge to the testing equipments. On the one hand, LED light source have outstanding directively characterizes than other ordinary light sources. Normally it wouldn’t uniformly emit lighting at all the direction on the w...

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The Description of Integrating Sphere Coating
25 Mar, 2015 2644 Author: root

The Description of Integrating Sphere Coating

The ideal integrating sphere paint should have below performances: 1. High-Lambert characteristics (good diffuse reflection characteristics) 2. High reflectance in a wide wavelength range 3. High stability 4. Easy construction 5. Easy to remove The history of integrating sphere coating: In 1934, Principle of Optics mentioned the description of principle of integrating sphere and the formulations o...

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Why need Auxiliary Lamp and how to use Auxiliary Lamp correctly?
27 Feb, 2015 3332 Author: root

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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How To Build The Darkroom For Goniophotometer?
23 Jan, 2015 6709 Author: root

How To Build The Darkroom For Goniophotometer?

Goniophotometer measures light intensity performance measurement of luminaries and light source, which is the photometry value in different directions in space and color distribution. Goniophotometer should run in dark room, and what are the requirements for the test environment? The size requirements for dark room: for example, such as LISUN LSG-6000 LM-79 Type C Mirror Goniophotometer System. Ac...

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