What is the Integrating Sphere?

Integrating sphere is a hollow sphere with high reflectance surface, it is widely applied in testing lumen, chromaticity coordinates, CCT, dominant wavelength and peak wavelength etc for light source or luminaries. Here we talking about integrating sphere theory.

The inner coating reflectance of integrating sphere is an important index for integrating sphere. The coating is ideal diffuse reflection material, the diffuse reflectance factor of the material is close to 1. Common used material is BaSO4, make it mixed with colloid binder and paint it on the inner surface. Lisun integrating sphere’s inner painting meets the requirement of standard CIE Pub.No.84(1989), the inner painting material is BaSO4. BaSO4 painting characteristics: ρ(λ)≥0.96(450nm~800nm) and ρ(λ)≥0.92(380nm~450nm), fine diffuse reflectance, reflectance≈0.8 and accuracy ρ(λ)<1.5%. Lisun integrating sphere’s interface is standard SMA905 interface, it is made by carbon steel material.

new-integrating-sphere-design

Integrating sphere generally has 2 kinds structure. One is 2π geometry, another is 4π geometry. 4π test is to put the light source in the middle of the integrating sphere, 2π test is to put the light source at the side opening. 4π test is for all types of SSL products including all directional emission products or just one directional emission products, 2π test is for SSL products having only forward emission. LISUN integrating spheres can do both 4π and 2π tests.

In order to make all types of SSL products to do 4π test easily, Lisun develops IS-*MA New design integrating sphere with holder base. Inter has a detachable unloading base, according to various different light source, install different jigs on the base, it is very easy and convenient. The hold base can bear max 20kg, it can expanding to test all lamps such as E27/E40, all tubes such as T5/T8/T12 an d all kinds of luminaries. The holder base can be installed in the ceiling or bottom. The height is adjustable.

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Surge Generator, EMC Test Systems, ESD Simulator, EMI Test Receiver, Electrical Safety Tester, Integrating Sphere, Temperature Chamber, Salt Spray Test, Environmental Test Chamber, LED Test Instruments, CFL Test Instruments, Spectroradiometer, Waterproof Test Equipment, Plug and Switch Testing, AC and DC Power Supply.

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