2015SJ/T 2658.6-2015 Measuring method for semiconductor infrared-emitting diode.Part 6: Radiant power
1970SJ 2658.6-1986 Methods of measurement for semiconductor infrared diodes Methods of measurement for output optical power
SJ 2658.6-1986 Methods of measurement for semiconductor infrared diodes Methods of measurement for output optical power was changed to SJ/T 2658.6-2015 Measuring method for semiconductor infrared-emitting diode.Part 6: Radiant power.