EN ISO 11551:1997 Optics and Optical Instruments - Lasers and Laser-Related Equipment - Test Method for Absorptance of Optical Laser Components ISO 11551: 1997
2019EN ISO 11551:2019 Optics and photonics - Lasers and laser-related equipment - Test method for absorptance of optical laser components (ISO 11551:2019, Corrected version 2020-01)
2003EN ISO 11551:2003 Optics and Optical Instruments - Lasers and Laser-Related Equipment - Test Method for Absorptance of Optical Laser Components ISO 11551: 2003
1997EN ISO 11551:1997 Optics and Optical Instruments - Lasers and Laser-Related Equipment - Test Method for Absorptance of Optical Laser Components ISO 11551: 1997