Discomfort Caused by Glare from Luminaires with a Non-Uniform Source Luminance

Discomfort Caused by Glare from Luminaires with a Non-Uniform Source Luminance

Glare and the resulting discomfort are a persistent issue in lighting that became even bigger with the introduction with LEDs as a light source. While the UGR method is well established, it is sometimes heavily discussed if it is appropriate for SSL. The limitations of the UGR method need to be understood. Peter Thorns BSc(Hons), CEng, FCIBSE, FSLL, explains these limitations and consequently describes the research and how to apply correction measures.

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Adopting an LED More Suited to Circadian Entrainment

Adopting an LED More Suited to Circadian Entrainment

Since the introduction of LED lights, a lot has been said about risks of blue light for ocular health on the one hand, and the opportunity of circadian entrainment, on the other hand. While a controversial discussion on the first topic is ongoing, the second topic is well accepted. To solve both issues, Bill Chan, President of LiteController Inc. proposes the application of 465-470nm pumped phosphor converted white LEDs with a content of 86% - 92% blue-turquoise light and 8% - 14% blue-violet light. In the article he concentrates on the second topic and proves the benefit of regulating the circadian entrainment more efficiently, maintaining a high typical efficacy of 150 lm/W and good color rendering of CRI 80+ ideally supporting the WELL Building Standard.

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WHITE PAPER - Measuring Color Uniformity

WHITE PAPER - Measuring Color Uniformity

The color uniformity of light generated by LED luminaires plays a major role in many lighting applications. This makes it an important parameter to measure in both the R&D stage and during the quality assurance process. MKS Instruments has stayed abreast of this challenge by developing a new feature for its FluxGage photometrical system: the color uniformity measurement function. It allows quick evaluation of optical assemblies for color mixing and beam shaping. This whitepaper presents this novel feature of the system.

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WHITE PAPER - Protection Materials To Improve LED Device Lifetime And Performance

WHITE PAPER - Protection Materials To Improve LED Device Lifetime And Performance

With the rapid growth of the LED market, correct product selection is imperative to ensure LED performance and lifetime. Jade Bridges, Electrolube’s Global Technical Support Manager, will highlight the use of LEDs in various environments and introduce how to specify appropriate protection under such conditions.

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How to Address the Lighting Industry‘s Concerns Regarding Product Compliance Online

How to Address the Lighting Industry‘s Concerns Regarding Product Compliance Online

How to Address the Lighting Industry‘s Concerns Regarding Product Compliance Online by Marion Ebel, Policy Manager, LightingEurope, Brussels

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HCL Basics- Ergonomy & Geometry in Integrative Lighting / HCL

HCL Basics- Ergonomy & Geometry in Integrative Lighting / HCL

HCL Basics- Ergonomy & Geometry in Integrative Lighting / HCL by Octavio L. PEREZ, Ph.D. (Multidisciplinary Science), WELL AP, International Consultant / Investigator at Mount Sinai Hospital, NYC

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Repro-light Consortium Deliver Intelligent Optics

Repro-light Consortium Deliver Intelligent Optics

Bartenbach's interdisciplinary team this week announced the successful engineering of two unparalleled optic designs. Driven by the scope of the Repro-light project, "To successfully initiate transformation in the European LED lighting industry, by creating the 'Luminaire of the Future'." Bartenbach was tasked to deliver a novel optical system, and is pleased to present two new "LED Light Tile Optics (LLT)".

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Repro-Light Consortium Announce Intelligent Workspace Lighting Concept

Repro-Light Consortium Announce Intelligent Workspace Lighting Concept

The pioneering design team at Bartenbach unveils a brand-new intelligent lighting concept set to revolutionize workspace personalization. It is set to deliver a truly user-centric, workspace lighting blueprint for lighting designers to transform workspaces for healthier living. The story began with Bartenbach's involvement in the Repro-light project consortium, funded through the European Commission's Horizon 2020 work program. The scope of the project, "To successfully initiate transformation in the European LED lighting industry, by creating the 'Luminaire of the Future'." Part of this remit was to develop a new customizable lighting system.

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New DLC Report: Interoperability for Networked Lighting Controls

New DLC Report: Interoperability for Networked Lighting Controls

Interoperability for Networked Lighting Controls explores the current interest in networked lighting controls (NLC) and the benefits various stakeholders can attain from championing interoperable systems. The report details three specific and actionable use cases and explains why interoperability is a core component for ongoing operation of energy savings programs and is essential for the long-lasting relevance of NLCs. At the end of each use case, the report outlines the steps lighting stakeholders can take to move the industry toward a more interoperable future.

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Full Spectrum LEDs Outperform Standard LED Lighting, Study Shows

Full Spectrum LEDs Outperform Standard LED Lighting, Study Shows

Full Spectrum LED products outperform conventional solutions, according to a study into the visual impact and perceptual performance of LED lighting by the Fraunhofer Institute for Building Physics (IBP) in Stuttgart, Germany.

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EDITORIAL

BIOS Lighting and Lumileds Partnership - New LUXEON LED® with BIOS SkyBlue® Circadian Technology

BIOS Lighting and Lumileds Partnership - New LUXEON LED® with BIOS SkyBlue® Circadian Technology Human Centric Lighting (HCL) innovator BIOS, and global lighting solutions provider Lumileds®, have joined forces to create a new SkyBlue® LED that doubles previously available chip performance. The new 3030 mid-power LED dramatically reduces the lumen per dollar development barrier facing ... Read more »

EDITORIAL

Luminus Releases XFM-5050 UVC LEDs and Opens New Possibilities for Disinfection and Sterilization

Luminus Releases XFM-5050 UVC LEDs and Opens New Possibilities for Disinfection and Sterilization Luminus Devices today introduced its new XFM-5050 UVC LED series that sets new benchmarks for output, and lowers the $/mW another 20% compared to previous Luminus UVC LEDs. The series offers 2, 3, and 4 chip options with nominal power levels of 120, 180, and 240 mW of disinfection power. Read more »

EDITORIAL

Transform Your Space with Thorn's New VCT Technology

Transform Your Space with Thorn's New VCT Technology VCT technology (Variable Color Temperature) brings a new dynamic to your space. It is now possible to set dedicated color temperatures for specific areas of your space, ranging from 2700 K to 6500 K. The VCT enables you to manually and automatically adjust light levels and to set pre-defined ... Read more »

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