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 range of radiation emitted by the source and the results should be compared with the corresponding exposure limit values indicated in Table 1.1. More than one exposure value and corresponding exposure limit can be relevant for a given source of optical radiation.
Numbering (a) to (o) refers to corresponding rows of Table 1.1.
For the purposes of these Regulations, the formulae above can be replaced by the following expressions and the use of discrete values as set out in the following tables:
Table 1.1: Exposure limit values for non-coherent optical radiation
Table 1.2: S (λ) [dimensionless], 180 nm to 400 nm
|
λ in nm |
S (λ) |
λ in nm |
S (λ) |
λ in nm |
S (λ) |
λ in nm |
S (λ) |
λ in nm |
S (λ) |
|---|---|---|---|---|---|---|---|---|---|
|
180 |
0.0120 |
228 |
0.1737 |
276 |
0.9434 |
324 |
0.000520 |
372 |
0.000086 |
|
181 |
0.0126 |