> Quick answer: In the EU, acceptable lumen output and beam uniformity for outdoor solar lamps are governed by internationally recognized standards like IES LM-79-08 [25] and IEC 62471 [21]. These standards require complete system testing under real-world conditions to ensure reliable performance claims.
While the EU does not explicitly detail lumen output thresholds or beam uniformity for outdoor solar lamps, international standards provide a robust framework for compliance. This article explores how these guidelines apply to European markets and ensures that lighting systems meet high-quality benchmarks.
Understanding Photometric Standards in the EU
The Illuminating Engineering Society (IES) publishes detailed standards guiding performance and measurement across various environments [5][6]. The IES LM-79-08 standard is particularly critical for testing luminaire performance, ensuring accurate reporting of lumen output, efficacy, color temperature (CCT), and color rendering index (CRI) [25].
Absolute Photometry: Measuring Lumen Output
IES LM-79-08 mandates that all components be evaluated within the complete fixture under standard operating conditions. This method, known as „Absolute Photometry,” ensures lumen output is measured not in isolation but as part of an integrated system, including the solar panel, battery, and driver [25].
Beam Uniformity and Light Distribution
Beam uniformity is addressed through photometric testing and light distribution patterns outlined by the IES standards. The use of IES BUG (Backlight, Upward, Glare) ratings helps evaluate shielding and aiming in outdoor lighting [15]. While no specific uniformity ratio is defined, accurate photometric files are crucial for predicting performance using lighting design software like AGi32 or DIALux [8].
International Electrotechnical Commission (IEC) Standards
The IEC has developed a technical specification for solar-powered LED lanterns to harmonize national standards globally and support quality assurance in off-grid lighting [10]. This standard informs EU-level expectations for product reliability and performance, while the IEC 62471 standard addresses photobiological safety [21].
CIE Standards and LED Flux Measurement
The International Commission on Illumination (CIE) develops standards ensuring consistency across manufacturers in LED flux measurement and color rendering properties [9][2]. These standards help manage customer expectations by providing consistent testing methods, such as IES LM-79-08, to ensure reliable performance claims.
Performance Over Time: IES LM-84-20
The IES LM-84-20 standard provides a method for measuring the maintenance of luminous, radiant, and photon flux over time [17][18]. This is essential for outdoor lighting where degradation affects uniformity and output. It allows for predicting long-term performance, making it critical for solar lamp design.
System Integration and Testing
A key insight is that lumen output in solar lighting systems depends on the integrated system’s behavior under real operating conditions [25]. The IES LM-79-08 standard mandates testing the entire luminaire to ensure meaningful performance data. This holistic approach ensures uniformity isn’t compromised by system inefficiencies.
Key Takeaways
- EU standards for outdoor solar lamps are governed by IES and IEC benchmarks.
- Lumen output and beam uniformity must be measured as part of a complete integrated system under real-world conditions [8][25].
- Performance over time is evaluated using the IES LM-84-20 standard [17][18].
Frequently Asked Questions
[
{
„q”: „What are the key standards for lumen output in solar lamps?”,
„a”: „The critical standard is IES LM-79-08, which mandates testing of complete systems under real-world conditions to ensure accurate performance data [25].”
},
{
„q”: „How does beam uniformity get evaluated in outdoor lighting?”,
„a”: „Beam uniformity is addressed through photometric testing and light distribution patterns outlined by the IES standards, including the use of IES BUG ratings for shielding and aiming [15][8].”
},
{
„q”: „What role does the IEC 62471 standard play?”,
„a”: „IEC 62471 addresses photobiological safety for LED-based products, ensuring that solar lamps comply with EU regulatory expectations on optical radiation hazards [21].”
}
]
References
- [2] Lighting_community_outlines_challenges_for_LED_industry_-_News__8be8c397 — magazine
source passage
and halogen sources, according to Dowling, although this is not widely appreciated. "Most Color Kinetics installations are not driven by energy savings, although the benefits are still there," he said. Speakers and panelists kept returning to the issue of standards. Richard Hall of Thorn Lighting commented: "There is a very high need for standardization to allow luminaire [lighting fixture] manufacturers to manage their customers expectations." In fact, a number of standards are being developed by the CIE, the International Commission on Illumination, relating to areas such as the measurement of LED flux, color rendering index, and other properties. In some respects, LEDs will need to fit in with existing standards. "There are a number of internationally recognized standards, for example covering transport-related lighting applications, and LEDs will have to adapt themselves to fit around these," said Jonathan David. With regard to photobiological safety, Telectra s Oliver pointed out that the regulations covering laser eye safety also cover LEDs. Challenges and benefitsAlthough there are many benefits associated with using LEDs for lighting applications, there are also many issues to resolve. Factors such as cost and luminous efficacy, and the lumens per dollar figure-of-merit, are always mentioned at LED conferences, but other factors can be equally important to lighting designers. These include standards, lifetime and reliability, color variations over time and from batch
- [5] Individual_Standards_The_IES_Webstore__730d5014 — authority
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# Lighting Science Standards Source: Blog/Web URL: https://store.ies.org/individual-standards/ Author: Date: 2026-01-01 INDIVIDUAL STANDARDS: The Illuminating Engineering Society (IES) publishes standards for the lighting industry. These standards guide lighting professionals and others via recommendations for product designs, output and best practice. IES standards ensure you can: – • Adopt proven illumination guidelines • Improve product performance • Design well-lit facilities Lighting Science Standards Every engineering discipline requires a solid scientific foundation. This collection of standards includes the language and physics of lighting, vision and visual performance, color science, color appearance and rendition, photometry, non-visual effects of lighting, photobiology, lighting calculations and more. Lighting Practice Standards The practice of lighting design and illuminating engineering are detailed in this collection, providing basic design principles for indoor and outdoor environments, descriptions light sources, luminaires, and control systems, lighting upgrades, lighting system commissioning, lighting economics, lighting maintenance and other aspects involved with the design, installation, and construction for lighting system. Lighting Applications Standards How do I design a lighting system for a (fill in the blank)? This collection has detailed design criteria for commercial, residential, industrial, museum, healthcare and many other applications. Each st
- [6] Individual_Standards_The_IES_Webstore__722c1eb0 — magazine
source passage
# Lighting Science Standards Source: Blog/Web URL: https://store.ies.org/individual-standards/?v=eb65bcceaa5f Author: Date: 2026-01-01 INDIVIDUAL STANDARDS: The Illuminating Engineering Society (IES) publishes standards for the lighting industry. These standards guide lighting professionals and others via recommendations for product designs, output and best practice. IES standards ensure you can: – • Adopt proven illumination guidelines • Improve product performance • Design well-lit facilities Lighting Science Standards Every engineering discipline requires a solid scientific foundation. This collection of standards includes the language and physics of lighting, vision and visual performance, color science, color appearance and rendition, photometry, non-visual effects of lighting, photobiology, lighting calculations and more. Lighting Practice Standards The practice of lighting design and illuminating engineering are detailed in this collection, providing basic design principles for indoor and outdoor environments, descriptions light sources, luminaires, and control systems, lighting upgrades, lighting system commissioning, lighting economics, lighting maintenance and other aspects involved with the design, installation, and construction for lighting system. Lighting Applications Standards How do I design a lighting system for a (fill in the blank)? This collection has detailed design criteria for commercial, residential, industrial, museum, healthcare and many other applic
- [8] Best_practices_for_solar_street_lighting_systems_Buildings__513f7c53 — authority
source passage
standard grid-connected luminaires, should deliver consistent power output as per the photometric test report from an accredited lab. Lighting design through software such as AGi32 or DIALux relies on the luminaire output to be that of its photometric file. Any variation in luminous flux or light distribution due to the lower capacity of the battery source is considered noncompliance. *** Light technical parameters — Definitions: Illuminance describes the amount of light falling on a given surface area. Luminance is the amount of light reflected off a surface being illuminated. Uniformity is a measure of how equally light is distributed on the illuminating surface. JOHNSON PHILIP is an electrical engineer based in Sydney, Australia, who specializes in exterior and industrial lighting projects. He was actively involved in developing lighting solutions based on renewable sources such as solar for private and public domain lighting projects in the Oceania region. Philip has recently started working with City of Sydney as a senior engineer for electrical and lighting assets. For up-to-the-minute LED and SSL updates, follow us on Twitter. You’ll find curated content and commentary, as well as information on industry events, webcasts, and surveys on our LinkedIn page and our Facebook page. JOHNSON PHILIP is an electrical engineer based in Sydney, Australia, who specializes in exterior and industrial lighting projects. He was actively involved in developing lighting solutions based
- [9] Lighting_community_outlines_challenges_for_LED_industry_-_News__8be8c397 — magazine
source passage
typical LEDs already have a lower "cost of light" than incandescent and halogen sources, according to Dowling, although this is not widely appreciated. "Most Color Kinetics installations are not driven by energy savings, although the benefits are still there," he said. Speakers and panelists kept returning to the issue of standards. Richard Hall of Thorn Lighting commented: "There is a very high need for standardization to allow luminaire [lighting fixture] manufacturers to manage their customers expectations." In fact, a number of standards are being developed by the CIE, the International Commission on Illumination, relating to areas such as the measurement of LED flux, color rendering index, and other properties. In some respects, LEDs will need to fit in with existing standards. "There are a number of internationally recognized standards, for example covering transport-related lighting applications, and LEDs will have to adapt themselves to fit around these," said Jonathan David. With regard to photobiological safety, Telectra s Oliver pointed out that the regulations covering laser eye safety also cover LEDs.
- [10] International_standard_for_solar_LED_lanterns_released__d04796e2 — magazine
source passage
# International standard for solar LED lanterns released Source: Blog/Web URL: https://www.powersystemsdesign.com/articles/international-standard-for-solar-led-lanterns-released/8/4935 Author: Brad Cunningham; Director; PEI-Genesis Date: 2013-04-19 The International Electrotechnical Commission (IEC) has released a new technical specification for solar-powered light-emitting diode (LED) lighting devices, such as solar lanterns. The new specification was announced by U.S. Energy Secretary Steven Chu to ministers gathered in New Delhi for the fourth Clean Energy Ministerial (CEM4). Solar lanterns are important sources of light after dark in rural communities without access to electricity in developing countries. The new standard represents an important step that enables governments to harmonize their national standards with this international standard, thereby paving the way for market expansion for quality-assured devices. "The new IEC standard represents important progress in the effort to expand access to modern off-grid lighting among low-income households in developing countries," said Arne Jacobson, Director of the Schatz Energy Research Center at Humboldt State University, who served as technical lead for the team that drafted the IEC document. "The standard will serve as a cornerstone in efforts to create an internationally harmonized quality assurance program for affordable off-grid lighting and energy systems that supports commercial market delivery and protects consum
- [15] DarkSky_Approved_Lodging_guidelines__2f68d3bd — authority
source passage
should specify all of the following for each light fixture (luminaire): – Location – Purpose – Manufacturer – Model number – Light source type (e.g., incandescent, LED) – Correlated color temperature (CCT), in kelvins (K) – Luminaires total lumen output – Operational details, such as use of motion sensors, time switches (a.k.a. timeclocks), or photocells – Shielding and aiming, including IES BUG rating if available – Daytime photographs, or manufacturer diagrams or cut sheets of each fixture (luminaire) type – Sample nighttime photographs taken from defined locations as indicated on the site plan – Lighting inventory can be documented using the provided template – Note: When there are numerous outdoor light fixtures, it is acceptable to list them in groups according to purpose or area. APPENDIX B Campgrounds, temporary structures, and properties promoting ecotourism – DarkSky recognizes that it is not always feasible to hire a professional lighting designer and that people are left with no guidance on how to choose responsible lighting. For these reasons, the following recommendations are offered, which may be suitable for seasonal campgrounds, temporary structures, and properties promoting ecotourism that are located in dark sky locations. These guidelines are not appropriate for hotels and resort style facilities. In those instances, the Facility should retain the services of a qualified lighting professional. – Ideally, light fixtures (luminaires) should be certified as Da
- [17] Measuring_Optical_Radiation_Maintenance_of_LED_Lamps_Light__f582f14c — magazine
source passage
# Measuring Optical Radiation Maintenance of LED Lamps, Light Engines, and Luminaires Source: Blog/Web URL: https://store.ies.org/product/lm-84-20-approved-method-measuring-optical-radiation-maintenance-of-led-lamps-light-engines-and-luminaires/?v=eb65bcceaa5f Author: Date: 2026-01-01 Product Description This document provides the method for measuring the luminous, radiant, and/or photon flux, as well as chromaticity and other spectral properties over time. This method applies to LED lamps, LED light engines, LED luminaires, OLED light engines, and OLED luminaires. The document describes the procedures to be followed and the precautions to be observed in both initial determination and reproduction of results for determining luminous, radiant, and/or photon flux, and spectral power distribution (SPD) and chromaticity as spectral maintenance measurements, under standard operating conditions. Note: SSL products have already been adopted in horticultural and other applications. It is expected that SSL products will be adopted in new lighting applications and penetrate additional markets. As a result of the additional applications for SSL products, the scope of this Approved Method has been expanded to include reporting of both photon flux and radiant flux in addition to luminous flux. Page count: 8 pages Publisher: Illuminating Engineering Society (2020) SKU: ANSI/IES LM-84-20+E1 ISBN-13: 978-0-87995-218-1 Chapters: – 1.0 Introduction and Scope 2.0 Normative References 3.0 Defini
- [18] Measuring_Optical_Radiation_Maintenance_of_LED_Lamps_Light__f582f14c — authority
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# Measuring Optical Radiation Maintenance of LED Lamps, Light Engines, and Luminaires Source: Blog/Web URL: https://store.ies.org/product/lm-84-20-approved-method-measuring-optical-radiation-maintenance-of-led-lamps-light-engines-and-luminaires/?v=eb65bcceaa5f Author: Date: 2026-01-01 Product Description This document provides the method for measuring the luminous, radiant, and/or photon flux, as well as chromaticity and other spectral properties over time. This method applies to LED lamps, LED light engines, LED luminaires, OLED light engines, and OLED luminaires. The document describes the procedures to be followed and the precautions to be observed in both initial determination and reproduction of results for determining luminous, radiant, and/or photon flux, and spectral power distribution (SPD) and chromaticity as spectral maintenance measurements, under standard operating conditions. Note: SSL products have already been adopted in horticultural and other applications. It is expected that SSL products will be adopted in new lighting applications and penetrate additional markets. As a result of the additional applications for SSL products, the scope of this Approved Method has been expanded to include reporting of both photon flux and radiant flux in addition to luminous flux. Page count: 8 pages Publisher: Illuminating Engineering Society (2020) SKU: ANSI/IES LM-84-20+E1 ISBN-13: 978-0-87995-218-1 Chapters: – 1.0 Introduction and Scope 2.0 Normative References 3.0 Defini
- [21] LED-based_products_must_meet_photobiological_safety_standards__32f1ba46 — authority
source passage
# LED-based products must meet photobiological safety standards: part 3 (MAGAZINE) Source: Blog/Web URL: https://www.buildings.com/building-systems-om/lighting/article/55258224/led-based-products-must-meet-photobiological-safety-standards-part-3-magazine Author: Date: 2012-02-18 +++++ This article was published in the February 2012 issue of LEDs Magazine. +++++ Parts one and two of this series on LED photobiological safety focused on the potential hazards to the human body posed by exposure to optical radiation; the development of standards and their application; and the fine details of source evaluation. This third part of the series focuses on the use of the IEC62471 standard to evaluate LED-based products. IEC62471 may be used to evaluate personal exposure to optical radiation, within, for example, the scope of the EU Artificial Optical Radiation Directive. However, its principal use is in providing a framework for evaluating the photobiological safety of finished products intended for sale on the market. The responsibility for ensuring that such an evaluation is performed resides with the manufacturer of the finished product, who, in many cases, is wont to reduce this burden. It is clearly not possible to measure every LED in use, and indeed in many cases there is no need to do so. For example, the low visual response elicited from low-power white or colored LEDs leads one to reason that no photochemical safety concerns exist. However, as one considers LEDs of increasing
- [25] Knowledge_Base__d64b9e2d — authority
source passage
of solid-state components is significantly affected by the design parameters of the lighting fixture, so a new photometric testing standard was established called LM-79-08. This testing standard, referred to as “Absolute Photometry”, requires that all components be tested within the luminaire under standard operating and environmental conditions, allowing for meaningful comparisons of fixture performance. LM-79-08 reports lumen output, efficacy, color temperature (CCT) and color rendering (CRI). Our LED products are tested in accordance with LM-79-08 by independent testing laboratories certified by the United States Department of Energy to ensure accuracy.
and halogen sources, according to Dowling, although this is not widely appreciated. "Most Color Kinetics installations are not driven by energy savings, although the benefits are still there," he said. Speakers and panelists kept returning to the issue of standards. Richard Hall of Thorn Lighting commented: "There is a very high need for standardization to allow luminaire [lighting fixture] manufacturers to manage their customers expectations." In fact, a number of standards are being developed by the CIE, the International Commission on Illumination, relating to areas such as the measurement of LED flux, color rendering index, and other properties. In some respects, LEDs will need to fit in with existing standards. "There are a number of internationally recognized standards, for example covering transport-related lighting applications, and LEDs will have to adapt themselves to fit around these," said Jonathan David. With regard to photobiological safety, Telectra s Oliver pointed out that the regulations covering laser eye safety also cover LEDs. Challenges and benefitsAlthough there are many benefits associated with using LEDs for lighting applications, there are also many issues to resolve. Factors such as cost and luminous efficacy, and the lumens per dollar figure-of-merit, are always mentioned at LED conferences, but other factors can be equally important to lighting designers. These include standards, lifetime and reliability, color variations over time and from batch
# Lighting Science Standards Source: Blog/Web URL: https://store.ies.org/individual-standards/ Author: Date: 2026-01-01 INDIVIDUAL STANDARDS: The Illuminating Engineering Society (IES) publishes standards for the lighting industry. These standards guide lighting professionals and others via recommendations for product designs, output and best practice. IES standards ensure you can: – • Adopt proven illumination guidelines • Improve product performance • Design well-lit facilities Lighting Science Standards Every engineering discipline requires a solid scientific foundation. This collection of standards includes the language and physics of lighting, vision and visual performance, color science, color appearance and rendition, photometry, non-visual effects of lighting, photobiology, lighting calculations and more. Lighting Practice Standards The practice of lighting design and illuminating engineering are detailed in this collection, providing basic design principles for indoor and outdoor environments, descriptions light sources, luminaires, and control systems, lighting upgrades, lighting system commissioning, lighting economics, lighting maintenance and other aspects involved with the design, installation, and construction for lighting system. Lighting Applications Standards How do I design a lighting system for a (fill in the blank)? This collection has detailed design criteria for commercial, residential, industrial, museum, healthcare and many other applications. Each st
# Lighting Science Standards Source: Blog/Web URL: https://store.ies.org/individual-standards/?v=eb65bcceaa5f Author: Date: 2026-01-01 INDIVIDUAL STANDARDS: The Illuminating Engineering Society (IES) publishes standards for the lighting industry. These standards guide lighting professionals and others via recommendations for product designs, output and best practice. IES standards ensure you can: – • Adopt proven illumination guidelines • Improve product performance • Design well-lit facilities Lighting Science Standards Every engineering discipline requires a solid scientific foundation. This collection of standards includes the language and physics of lighting, vision and visual performance, color science, color appearance and rendition, photometry, non-visual effects of lighting, photobiology, lighting calculations and more. Lighting Practice Standards The practice of lighting design and illuminating engineering are detailed in this collection, providing basic design principles for indoor and outdoor environments, descriptions light sources, luminaires, and control systems, lighting upgrades, lighting system commissioning, lighting economics, lighting maintenance and other aspects involved with the design, installation, and construction for lighting system. Lighting Applications Standards How do I design a lighting system for a (fill in the blank)? This collection has detailed design criteria for commercial, residential, industrial, museum, healthcare and many other applic
standard grid-connected luminaires, should deliver consistent power output as per the photometric test report from an accredited lab. Lighting design through software such as AGi32 or DIALux relies on the luminaire output to be that of its photometric file. Any variation in luminous flux or light distribution due to the lower capacity of the battery source is considered noncompliance. *** Light technical parameters — Definitions: Illuminance describes the amount of light falling on a given surface area. Luminance is the amount of light reflected off a surface being illuminated. Uniformity is a measure of how equally light is distributed on the illuminating surface. JOHNSON PHILIP is an electrical engineer based in Sydney, Australia, who specializes in exterior and industrial lighting projects. He was actively involved in developing lighting solutions based on renewable sources such as solar for private and public domain lighting projects in the Oceania region. Philip has recently started working with City of Sydney as a senior engineer for electrical and lighting assets. For up-to-the-minute LED and SSL updates, follow us on Twitter. You’ll find curated content and commentary, as well as information on industry events, webcasts, and surveys on our LinkedIn page and our Facebook page. JOHNSON PHILIP is an electrical engineer based in Sydney, Australia, who specializes in exterior and industrial lighting projects. He was actively involved in developing lighting solutions based
typical LEDs already have a lower "cost of light" than incandescent and halogen sources, according to Dowling, although this is not widely appreciated. "Most Color Kinetics installations are not driven by energy savings, although the benefits are still there," he said. Speakers and panelists kept returning to the issue of standards. Richard Hall of Thorn Lighting commented: "There is a very high need for standardization to allow luminaire [lighting fixture] manufacturers to manage their customers expectations." In fact, a number of standards are being developed by the CIE, the International Commission on Illumination, relating to areas such as the measurement of LED flux, color rendering index, and other properties. In some respects, LEDs will need to fit in with existing standards. "There are a number of internationally recognized standards, for example covering transport-related lighting applications, and LEDs will have to adapt themselves to fit around these," said Jonathan David. With regard to photobiological safety, Telectra s Oliver pointed out that the regulations covering laser eye safety also cover LEDs.
# International standard for solar LED lanterns released Source: Blog/Web URL: https://www.powersystemsdesign.com/articles/international-standard-for-solar-led-lanterns-released/8/4935 Author: Brad Cunningham; Director; PEI-Genesis Date: 2013-04-19 The International Electrotechnical Commission (IEC) has released a new technical specification for solar-powered light-emitting diode (LED) lighting devices, such as solar lanterns. The new specification was announced by U.S. Energy Secretary Steven Chu to ministers gathered in New Delhi for the fourth Clean Energy Ministerial (CEM4). Solar lanterns are important sources of light after dark in rural communities without access to electricity in developing countries. The new standard represents an important step that enables governments to harmonize their national standards with this international standard, thereby paving the way for market expansion for quality-assured devices. "The new IEC standard represents important progress in the effort to expand access to modern off-grid lighting among low-income households in developing countries," said Arne Jacobson, Director of the Schatz Energy Research Center at Humboldt State University, who served as technical lead for the team that drafted the IEC document. "The standard will serve as a cornerstone in efforts to create an internationally harmonized quality assurance program for affordable off-grid lighting and energy systems that supports commercial market delivery and protects consum
should specify all of the following for each light fixture (luminaire): – Location – Purpose – Manufacturer – Model number – Light source type (e.g., incandescent, LED) – Correlated color temperature (CCT), in kelvins (K) – Luminaires total lumen output – Operational details, such as use of motion sensors, time switches (a.k.a. timeclocks), or photocells – Shielding and aiming, including IES BUG rating if available – Daytime photographs, or manufacturer diagrams or cut sheets of each fixture (luminaire) type – Sample nighttime photographs taken from defined locations as indicated on the site plan – Lighting inventory can be documented using the provided template – Note: When there are numerous outdoor light fixtures, it is acceptable to list them in groups according to purpose or area. APPENDIX B Campgrounds, temporary structures, and properties promoting ecotourism – DarkSky recognizes that it is not always feasible to hire a professional lighting designer and that people are left with no guidance on how to choose responsible lighting. For these reasons, the following recommendations are offered, which may be suitable for seasonal campgrounds, temporary structures, and properties promoting ecotourism that are located in dark sky locations. These guidelines are not appropriate for hotels and resort style facilities. In those instances, the Facility should retain the services of a qualified lighting professional. – Ideally, light fixtures (luminaires) should be certified as Da
# Measuring Optical Radiation Maintenance of LED Lamps, Light Engines, and Luminaires Source: Blog/Web URL: https://store.ies.org/product/lm-84-20-approved-method-measuring-optical-radiation-maintenance-of-led-lamps-light-engines-and-luminaires/?v=eb65bcceaa5f Author: Date: 2026-01-01 Product Description This document provides the method for measuring the luminous, radiant, and/or photon flux, as well as chromaticity and other spectral properties over time. This method applies to LED lamps, LED light engines, LED luminaires, OLED light engines, and OLED luminaires. The document describes the procedures to be followed and the precautions to be observed in both initial determination and reproduction of results for determining luminous, radiant, and/or photon flux, and spectral power distribution (SPD) and chromaticity as spectral maintenance measurements, under standard operating conditions. Note: SSL products have already been adopted in horticultural and other applications. It is expected that SSL products will be adopted in new lighting applications and penetrate additional markets. As a result of the additional applications for SSL products, the scope of this Approved Method has been expanded to include reporting of both photon flux and radiant flux in addition to luminous flux. Page count: 8 pages Publisher: Illuminating Engineering Society (2020) SKU: ANSI/IES LM-84-20+E1 ISBN-13: 978-0-87995-218-1 Chapters: – 1.0 Introduction and Scope 2.0 Normative References 3.0 Defini
# Measuring Optical Radiation Maintenance of LED Lamps, Light Engines, and Luminaires Source: Blog/Web URL: https://store.ies.org/product/lm-84-20-approved-method-measuring-optical-radiation-maintenance-of-led-lamps-light-engines-and-luminaires/?v=eb65bcceaa5f Author: Date: 2026-01-01 Product Description This document provides the method for measuring the luminous, radiant, and/or photon flux, as well as chromaticity and other spectral properties over time. This method applies to LED lamps, LED light engines, LED luminaires, OLED light engines, and OLED luminaires. The document describes the procedures to be followed and the precautions to be observed in both initial determination and reproduction of results for determining luminous, radiant, and/or photon flux, and spectral power distribution (SPD) and chromaticity as spectral maintenance measurements, under standard operating conditions. Note: SSL products have already been adopted in horticultural and other applications. It is expected that SSL products will be adopted in new lighting applications and penetrate additional markets. As a result of the additional applications for SSL products, the scope of this Approved Method has been expanded to include reporting of both photon flux and radiant flux in addition to luminous flux. Page count: 8 pages Publisher: Illuminating Engineering Society (2020) SKU: ANSI/IES LM-84-20+E1 ISBN-13: 978-0-87995-218-1 Chapters: – 1.0 Introduction and Scope 2.0 Normative References 3.0 Defini
# LED-based products must meet photobiological safety standards: part 3 (MAGAZINE) Source: Blog/Web URL: https://www.buildings.com/building-systems-om/lighting/article/55258224/led-based-products-must-meet-photobiological-safety-standards-part-3-magazine Author: Date: 2012-02-18 +++++ This article was published in the February 2012 issue of LEDs Magazine. +++++ Parts one and two of this series on LED photobiological safety focused on the potential hazards to the human body posed by exposure to optical radiation; the development of standards and their application; and the fine details of source evaluation. This third part of the series focuses on the use of the IEC62471 standard to evaluate LED-based products. IEC62471 may be used to evaluate personal exposure to optical radiation, within, for example, the scope of the EU Artificial Optical Radiation Directive. However, its principal use is in providing a framework for evaluating the photobiological safety of finished products intended for sale on the market. The responsibility for ensuring that such an evaluation is performed resides with the manufacturer of the finished product, who, in many cases, is wont to reduce this burden. It is clearly not possible to measure every LED in use, and indeed in many cases there is no need to do so. For example, the low visual response elicited from low-power white or colored LEDs leads one to reason that no photochemical safety concerns exist. However, as one considers LEDs of increasing
of solid-state components is significantly affected by the design parameters of the lighting fixture, so a new photometric testing standard was established called LM-79-08. This testing standard, referred to as “Absolute Photometry”, requires that all components be tested within the luminaire under standard operating and environmental conditions, allowing for meaningful comparisons of fixture performance. LM-79-08 reports lumen output, efficacy, color temperature (CCT) and color rendering (CRI). Our LED products are tested in accordance with LM-79-08 by independent testing laboratories certified by the United States Department of Energy to ensure accuracy.