Regulations 178 and 179
The biophysically relevant exposure values to optical radiation can be determined with the formulae below. The formulae to be used depend on the wavelength and duration of radiation emitted by the source and the results should be compared with the corresponding exposure limit values indicated in the Tables 2.2 to 2.4. More than one exposure value and corresponding exposure limit can be relevant for a given source of laser optical radiation.
Coefficients used as calculation tools within the Tables 2.2 to 2.4 are listed in Table 2.5 and corrections for repetitive exposure are listed in Table 2.6.
Table 2.4: Exposure limit values for laser exposure of skin
Table 2.5: Applied correction factors and other calculation parameters
Table 2.6 Correction for repetitive exposure
Each of the following three general rules should be applied to all repetitive exposures as occur from repetitively pulsed or scanning laser systems:
1. The exposure from any single pulse in
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