eLighting LED Tubes

IES Files are available for all eLighting products upon request. Email info@elighting.co.za to request a file on the lighting product of your choice. eLighting also offers photometric testing services to distributors and manufacturers.  

Customers are issued a complete test report (in PDF format) along with the resulting IES file for use in most application and modeling programs.

Our integrating sphere (also known as an Ulbricht sphere) is an optical component consisting of a hollow spherical cavity, with its interior covered with a diffuse white reflective coating which have small holes for entrance and exit ports. Its relevant property is a uniform scattering or diffusing effect. Of the light rays incident on any point on the inner surface are, by multiple scattering reflections, distributed equally to all other points.  We have two integrated spheres. The large sphere provides crucial photometric & electrical data on assembled lights, providing key insight such as luminous flux, efficacy, CRI, Power factor correction, correlated colour temperature among a number of other indicators. The smaller sphere measures LED chip information providing detailed analysis on the performance of each individual LED.

Photometric Testing on LED Tubes


Luminous flux 
Lamp/Luminaire efficacy (Lumens per Watt)
Colour rendering index (CRI) 
Correlated colour temperature (CCT) 
Spectral distribution measurements 
Chromaticity coordinates 
Luminance measurements 
Luminous intensity distributions 
Reflection and transmission measurements

Goniophotometer LED Tubes Testing IES

All of the photometric testing conducted at eLighting (Goni-photometric and spherical) are done in complete adherence to applicable IES Photometric Guidelines and Recommended Practices.

“IES FILES” are standardized data files which validate the light output of a lamp as luminous intensity versus angle along with sufficient descriptive and documentary test information. It is derived from the acronym for the Illuminating Engineering Society of North America (IESNA). IES files are assigned the file extension "IES". Used by lighting designers to model the illumination performance of a lighting scheme using commercial lighting design programs. An IES file is commonly referred to as "photometric data".


Made in South Africa LED tubes

     LED Lighting Manufacturer T T8 LED Tubs5 LED Tubes