1. According to the reflectivity of the internal coating:
Note: It can select the coating according to the test requirement, the default is the BaSO4 coating.
Specification: The above requirements and instructions are based on a part of related standards of GB / T 24824 and the Energy Star requirements. So when we are choosing the integrating sphere, we should analysis the light’s emitting angle first , and then chose the test method, then we can select the appropriate size integrating sphere. (Please note that if you choose inappropriate integrating sphere, the error of test data, especially for the luminous flux parameters will have 5%~30% tolerance.
Test Methods are as follow:
2π Geometry: for downlight, spotlight, ceiling light, project light etc.
4π Geometry: for bulbs, corn light, candle light, T series tubes etc.
3. According to the tested lamp’s power/ size:
Generally, it will be better to adoption use big size integrating sphere for high power lamps test.
Generally for panel shape light source, the diagonal length of tested panel shape lamp should be less than 1/7 diameter of the integrating sphere(according to LM-79) .
For the linear light source, the maximum length should be less than 2/3 diameter of the integrating sphere(according to LM-79).
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.IS-*M , LPCE-2(LMS-9000) , LPCE-3