The following text refers to IEC 60825-1: 2014 "Safety of Laser Products. Part 1: Equipment Classification and requirements". One should make sure that this version is current at the time of reading and check whether or not national deviations exist.
Optical Radiation Safety of Laser Products
The optical radiation safety of laser products designed to function as traditional lamps, excluding toys, may be assessed based on IEC 62471: 2006 where:
- The source emits in the spectral range 400-1400 nm
- The extended source subtends an angle, α, greater than 5 mrad at 200 mm from the nearest point of human access
- The un-weighted peak radiance, LT, measured in a 5 mrad FOV at 200 mm from the nearest point of human access, under operation and under reasonably predictable single fault conditions, does not surpass LT = 1 x 106 / α W.m-2.sr-1/ (α in radians, limited to range 0.005 to 0.1 rad)
The product should still conform to and be classified in accordance with IEC 60825 in all but those conditions of normal operation and reasonably predicable single fault conditions. When there are no other conditions, the classification will be taken as Class 1.
The product shall be assigned a risk group compliant with IEC 62471 and shall include a label mentioning the risk group, the laser product classification (including class 1 if applicable), and any relevant warnings.
Measuring such a source with the IDR300-PSL System
- PSL Profiler can be used to determine the angular subtense of the source
- The un-weighted radiance may be computed using the attached integral file (load via Benwin+ analysis/ set spectral integrals/load)
- The un-weighted peak radiance may be measured with a modified TEL310 telescope
This information has been sourced, reviewed and adapted from materials provided by Bentham Instruments Limited.
For more information on this source, please visit Bentham Instruments Limited.