The full name of CIE 127-2007 is<MEASUREMENTS OF LEDS>.This Technical Report has been prepared by CIE Technical Committee 2-45 of Division 2 “Physical Measurement of Light and Radiation” and has been approved by the Board of Administration of the Cooission Internationale de I’Eclairage for study and application. The following is the original content of CIE 127-2007.
A goniophotometer is a device to measure the luminous intensity of the source(or illuninance from the source at a given distance) in many different directions from the source. Compared with the sphere method, the goniophotometer method is theoretically free from errors due to differences in intensity distribution of the light source under test. It does not require total luminous flux standards. Instead, it requires longer time for measurement of each sample.
The photometer head of the goniophotometer should meet the spectral responsivity requirement given in Section 3.3. The calibration of the photometer head(and spectral mismatch correction) should follow the recommendation for Averaged LED Intensity measurement(Section 5). The instrument also requires careful shielding of ambient light and reflected light within the instrument.
LISUN designed the LS860 luminous Intensity Distribution Tester according to the CIE 127_2007 6.2 Methods of flux measurement.. It is a precise instrument for measuring LED luminous intensity.
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.LS860