Reader Opinion

The Value of Dark Skies - About Environmentally Friendly Lighting

Figure 4 shows a comparison of the spectrum of white LEDs (solid lines) with the response of the human visual system in the photopic regime [...] Read more »

Reader Opinion

Lighting Flicker of LED Lighting Systems

We've just added two charts about flicker from Philips. They have presented it at the L+B last week. Read more »

Reader Opinion

Lighting Flicker of LED Lighting Systems

It would be interesting to know details about the VLC modulations (amplitudes and frequencies) and how they are fitting into the borders mentioned by Walter. Read more »

Reader Opinion

Lighting Flicker of LED Lighting Systems

I am sorry for possible confusion. I have made the statement as clear as possible. This is how it is: (above 100Hz:) up to 400 [...] Read more »

Reader Opinion

Lighting Flicker of LED Lighting Systems

This is a comment from a reader to the article in LpR#54: I’m a bit confused about the article about flicker. On the one hand, [...] Read more »

Reader Opinion | Mar 19, 2016

Discussion: The Value of Dark Skies - About Environmentally Friendly Lighting

Discussion: The Value of Dark Skies - About Environmentally Friendly Lighting For many years no one worried about light pollution: on the contrary, the brighter the better. Then it became evident that darkness also has its value. J. Scott Feierabend, executive director of the International Dark-Sky Association (IDA), presents and explains in detail, the latest ndings and suggestions published in the “New IDA LED Lighting Practical Guide” and “New IDA Standards on Blue Light at Night”. He also discusses how to illuminate public areas while avoiding excess light pollution. Read more »

FEATURED

Lumileds RGBW Module Achieves Breakthrough Flux and Color Control

Lumileds RGBW Module Achieves Breakthrough Flux and Color Control Lumileds, a global leader in innovative lighting solutions, today introduced the Luxeon MultiColor Module 2.5 W, a compact RGBW module that produces leading flux and achieves exact color points in architectural and general outdoor lighting applications. The 4-in-1 module simplifies system design by ... Read more »

FEATURED

American Bright introduces Smart RGB Addressable Rope Light Solutions

American Bright introduces Smart RGB Addressable Rope Light Solutions American Bright brings to the market their smart RGB+IC LED flexible rope lighting solutions allowing for boundless application opportunities. The smart LED light source includes the controller and RGB chip in one package allowing for each LED to be addressable. Additional adaptability is gained ... Read more »

FEATURED

Goniometer LGS 650: Higher Accuracy and Reproducibility

Goniometer LGS 650: Higher Accuracy and Reproducibility Goniophotometry is an absolute measuring procedure that can achieve a higher level of accuracy than sphere photometry. It does not require a luminous flux standard, but in contrast is often used for calibrating standard lamps for luminous flux. In addition to the luminous flux, photometric spatial ... Read more »

FEATURED

Cree® XLamp® High Current LED

Cree® XLamp® High Current LED The XLamp High Current LED Array family is optimized for best-in-class lumen output, efficacy and reliability at high drive currents. XLamp CMA LEDs share the same package design and LES sizes as Cree's industry-leading CXA2 Standard Density LEDs, enabling lighting manufacturers to address a range ... Read more »

EDITORIAL

High Conductive Foils Enabling Large Area Lighting

High Conductive Foils Enabling Large Area Lighting Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP as one of the leading partners for research and development for surface technologies and organic electronics and Sefar AG, a leading manufacturer of precision fabrics from monofilaments, developed a roll-to-roll ... Read more »

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