This standard provides requirements regarding photobiological safety of the optical radiation emitted by image projectors. This standard on photobiological safety does not deal with other hazards such as electrical, mechanical or fire hazards. This standard provides requirements regarding: " optical radiation safety assessment of image projectors; " projector risk groups; " testing conditions and measurement conditions; " manufacturer s requirements including user information. The scope of this standard is photobiological safety of image projectors including the emissions fromlaser-illuminated projectors that fulfil the requirements as described in IEC 60825-1, Edition 3 section 4.4 and for which visible light emission has been excluded from classification in IEC 60825-1. This standard does not address safety requirements for laser display products where collimated laser beams generally scanned are employed. It does address those laser-illuminated projectors that employ a laser source to illuminate, for example, a micro-electronic-mechanical system (MEMS) without scanned beams or crystal-based display projector system. This standard includes projectors for only visible image projection and does not include UV-projectors, IR projectors, general lighting service (GLS) lamps (GLS; defined in IEC 62471) or projector lamp systems used for general lighting, which are treated in separate standards.