Testing of light distribution for luminaires or lighting fixtures
Accredited testing of the light distribution of luminaires or lighting fixtures and the creation of photometric data files.
Purpose/Benefit:Manufacturers of luminaires often need to know how the light from the luminaire is distributed in all various directions. Knowing the light distribution allows the creation of photometric data files which are used in software that is commonly used by lighting designers. By providing customers with photometric data files a manufacturer increases the marketability of their products.
Method (what/which methods are used to perform the service):Light distribution is measured according to an internal method which is based on CIE publication 121:1996.
The luminaire is mounted to a goniophotometer and the luminous intensity is measured at 10 or 25 meter distance as the luminarie is rotated in three degree of freedom. The electrical properties of the luminaire are also measured as the total luminous flux (Lumen) and luminous efficacy (Lumen/Watt) are caluculated. The correlated colour temperature and colour rendering index of the luminaire are also measured.
The measured data is then used to create photometric data files for IES (.ies) and EULUMDAT (.ldt)
Delivery (what does the client get after performed service – e.g. a report, certificate etc.):The results are reported in a test report in English which states that the test is performed as an accredited test. EULUMDAT- and IES-files are delivered with the report.
Area:Generic metrology and measurement technology
Testing
CIE 121:1996
Certification and marking: Not applicable Type of service: Testing / Analysis / Evaluation Instrument: Light sources General area: Photometry and radiometry Order information: A request for tender can be sent to the listed contact persons. Divison (OLD): Division Safety and Transport Delivery level: AccreditedConstruction
Sensors and sensor systems Tjänstetyp tagg: Provning