Reader's Question About "Short-Pulse Testing"

Reader's Question About "Short-Pulse Testing"

In reference to the article "Short-Pulse Testing Eliminates Self-Heating Errors to Produce True L-I Graphs" in issue LpR#83, a reader has asked why one measures with these short pulses, since this differs very much to the conditions in real application. Read the author's answer below.

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How to Increase the Efficiency of Two-Stage Drivers

How to Increase the Efficiency of Two-Stage Drivers

In this article, Dr. Weirich from Infineon Technologies, describes a simple method for increasing the efficiency of drivers that can operate with LED engines with a wide range of current and power levels, at virtually no effort. In addition, the method allows for using smaller inductors in the buck stage, leading to lower cost and potentially, smaller size.

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WHITE PAPER: Measuring UVA & Violet LED Light Sources

WHITE PAPER: Measuring UVA & Violet LED Light Sources

As the development of new UV LED sources continues at an ever-growing pace, so do the industrial applications that utilize them. UV LEDs are being put to work in various industrial processes, medical applications, and disinfection solutions. Efficient utilization of the UV radiation requires good measurement tools. However, accurate light measurement in this spectral range presents challenges, such as how to accurately measure the irradiance if the wavelength of the light is not exactly known.

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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: Measuring UVA & Violet LED Light Sources

WHITE PAPER: Measuring UVA & Violet LED Light Sources

As the development of new UV LED sources continues at an ever-growing pace, so do the industrial applications that utilize them. UV LEDs are being put to work in various industrial processes, medical applications, and disinfection solutions. Efficient utilization of the UV radiation requires good measurement tools. However, accurate light measurement in this spectral range presents challenges, such as how to accurately measure the irradiance if the wavelength of the light is not exactly known.

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Analysis of Heat Paths in LED Retrofit Lamps

Analysis of Heat Paths in LED Retrofit Lamps

Analysis of Heat Paths in LED Retrofit Lamps by Peter W. NOLTE, Dr., Research Team Leader at Fraunhofer Application Center for Inorganic Phosphors, Germany

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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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FEATURED

Precise Characterization of Infrared Sources

Precise Characterization of Infrared Sources The demand for IR measurement solutions has increased significantly in the recent years. IR LEDs and IR lasers such as VCSELs have enabled many new applications in the field of “IR sensing”, using the NIR range (800-1000 nm) but also higher wavelengths as 1380 nm. Measurement tasks range from 3D ... Read more »

FEATURED

Tiny and Powerful LUXEON Rubix LEDs Raise the Bar for CRI, Lumens, and Efficacy with Addition of Lime and PC Amber

Tiny and Powerful LUXEON Rubix LEDs Raise the Bar for  CRI, Lumens, and Efficacy with Addition of Lime and PC Amber Lumileds today introduced two new colors – PC Amber and Lime – for its very small and very powerful LUXEON Rubix LED portfolio. The 1.4 square millimeter footprint is almost pixel like and belies the light output that’s possible from this high-power LED. There are 6 color options plus white in the ... Read more »

FEATURED

Cree LED Offers New RGBW LEDs for Architectural Illumination

Cree LED Offers New RGBW LEDs for Architectural Illumination Cree LED offers the broadest line of RGBW LEDs for architectural illumination. The market leading, upgraded CLQ6B, new CLW6A and CLR6A SMD LEDs are high performing 3 & 4 color LEDs. Read more »

FEATURED

WHITE PAPER: Measuring UVA & Violet LED Light Sources

WHITE PAPER: Measuring UVA & Violet LED Light Sources As the development of new UV LED sources continues at an ever-growing pace, so do the industrial applications that utilize them. UV LEDs are being put to work in various industrial processes, medical applications, and disinfection solutions. Efficient utilization of the UV radiation requires good ... Read more »

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