IEC 62471-5-2015 pdf free

IEC 62471-5-2015 pdf free.Photobiological safety of lamps and lamp systems – Part 5: Image projectors.
This part of IEC 62471 provides requirements regarding photobiological safety of the optical radiation emitted by image projectors. This part of IEC 62471 does not deal with other hazards such as electrical, mechanical or fire hazards.
This part of IEC 62471 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 part of IEC 62471 is photobiological safety of image projectors including the emissions from laser-illuminated projectors that fulfill the requirements as specified in IEC 60825-1:2014, 4.4 and for which visible light emission has been excluded from classification in IEC 60825-1.
This part of IEC 62471 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-electromechanical system (MEMS) without scanned beams or crystal-based display projector system.
NOTE Image projectors containing lasers are subject to those provisions of IEC 60825-1 applicable to the embedded laser. See IEC 60825-1:2014, 4.4 for which visible light emission has been excluded from the laser product classification,
This part of IEC 62471 includes projectors for only visible image projection and does not include ultraviolet (UV) projectors, infrared (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 International Standards.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 62471, Ptiotobiological safety of lamps and lamp systems
IEC 60825-1:2014, Safety of laser products — Part 1: Equipment classification and requirements
IEC 60050 (all parts), International Elect rotechnical Vocabulary (available at http://www.electropedia.org)
IEC 60950-1. In formation technology equipment — Safety — Part 1: General requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62471, IEC 60050-845 (2) and the following apply.
3.1 accessible emission AE level of radiation determined at a certain distance from the product and with measurement conditions described in Clause 5
Note I to entry: The accessible emission is compared with the AEL (see 3.2) to determine the risk group of the product.
3.2 accessible emission limit AEL maximum accessible emission permitted within a particular risk group
3.3 angle of acceptance plane angle within which a detector will respond to optical radiation
Note I to entry: The angle of acceptance is usually measured in radians (SI unit).
Note 2 to entry: This angle of acceptance may be controlled by apertures or optical elements in front of the detector. The angle of acceptance is also sometimes referred to as the field of view (see 3.12).
Note 3 to entry: The angle of acceptance should not be confused with the angular subtense of the source (see 3.4) or the beam divergence.
3.4 angular subtense visual angle subtended by the apparent source at the eye of an observer or at the point of measurement.IEC 62471-5 pdf download.