Article | REF: SL6157 V1

Artificial incoherent radiatio.Luminous hazards Analysis- Protection and prevention

Authors: Jean HUE, Jean Luc ROCHAS

Publication date: October 10, 2018

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6. Glossary

Densité Optique (DO); optical density

For a given length, it is the decimal logarithm of the inverse of the transmission factor :

DO = log(1/T)

where T is the ratio of transmitted energy flux to incident flux.

Example

if T = 0.1 = 10 –1 then DO = 1

Exposure Limit Value (ELV); Valeur Limite d'Exposition (VLE)

Maximum eye or skin exposure value at which no deleterious biological effects are expected, irreversible. (synonyms: LE and VLEP).

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