The U.S. Government issued her LED test standards IESNA-LM-79-08. This approved method is a guide developed for the measurement of Solid State Lighting (SSL) products such as LED Street Light, LED Flood Light, LED Down Light, LED Ceiling Light, LED Par Light, LED Tube, LED Module and so on. The most of LED fixtures manufactory use the Integrating Sphere to do the color and photo parameters test. But considering to the SSL’s feature is not like a light source, it requests a goniophotometer to do the test. According to CIE121-1996, the following two goniophotometers are recommend:
1. LSG-1800 is a goniophotometer which rotates the luminaire around two mutually Perpendicular axes whose intersection is the photometric centre of the goniophotometer. This type of goniophotometer is normally used with a single photometer head positioned at an adequate distance from the centre.
2. LSG-2000 is a goniophotometer in which the luminaire does not move at all. The photometer head rotates around two mutually perpendicular axes whose crossing is the photometric centre of the goniophotometer.
The Goniophotometer LSG-1800 and LSG-2000 measured data match with international standard form (IES) and can be applied for lighting design by other lighting design software such as Dialux.
The test report shall list all significant data for each SSL product tested together with performance data. The report shall also list all pertinent data concerning conditions of testing, type of equipment, SSL products and reference standards. LISUN GROUP developed Goniophotometric System and Spectrophotometer & Integrating Sphere Test System to meet the request of Energy Star test standard.
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.