July 2014 IEC TR 62778 (Edition 2 2014) Application of IEC 62471 for the assessment of blue light hazard to light sources and luminaires CORRIGENDUM 1 D.3 Derivation of the formula for average radiance of the full array Replace Formula (D.1) as follows: a r r a y a r r a y B , B L E L E Replace Formula (D.2) as follows: a r r a y a r r a y B , L 1