Recommended Practice: Photobiological Safety for Lighting Systems
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ANSI/IES RP-27-26
Document Type: Lighting Sciece (LS)
Available as a downloadable secure PDF only.
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Product Description
Intended Audience: All as well as research scientists/academics in the biological science areas.
Intended Interest Categories: Affected (UA), Public Interest (UP), Academic, Research (GAR), Government, Regulatory (GGR), General SME (GSME), Organizational (OM), Test Equip User (TEU), Test Equip Manf (TEM).
Description: Classification, labeling and informational requirements for lamps that emit optical radiation in the wavelength range from 200 nm to 3000 nm. Normative & informative references have been added in this edition, as well as changes to the 500-lux distance calculation, UV radiation Risk Group duration, NEI setting, optical system notes, average of subtended angles, changes to the lumen-to-radiant power conversion, revisions to Table A-2 Spectral Weighting Function, equations for retinal blue light hazard exposure limit.
Page count: 75 pages
Publisher: Illuminating Engineering Society (2026)
SKU: ANSI/IES RP-27-26
ISBN: 978-0-87995-524-3
Previous edition: RP-27-20
Chapters:
- 1.0 Introduction and Scope
- 2.0 References
- 3.0 Definitions
- 4.0 Evaluation
- 5.0 Risk Assessment and Lamp Safety Groups
- 6.0 Measurement Techniques
- 7.0 Specific Labeling Requirements
- Annex A – Exposure Limits
- Annex B – Summary of Biological Effects
- Annex C – Stray Radiant Power
- Annex D – Uncertainty Analysis
- Annex E – Application Notes and Examples
- Annex F – Table of Weighting Functions, Interpolated
- Annex G – Units and Conversion Factors
Citation Format:
Illuminating Engineering Society. ANSI/IES RP-27-26, Recommended Practice: Photobiological Safety for Lighting Systems. New York: IES; 2026.