The document specifies a method for determination of illuminance and acceptance angle of cold light sources.
DIN 58141-10:1997 history
2011DIN 58141-10:2011-09 Measurement of fiber optic elements - Part 10: Determination of illuminance and effective aperture angle of cold light sources; Text in German and English
2011DIN 58141-10:2011 Measurement of fiber optic elements - Part 10: Determination of illuminance and effective aperture angle of cold light sources; Text in German and English
1997DIN 58141-10:1997 Testing of fibre optic elements - Part 10: Determination of illuminance and acceptance angle of cold light sources