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 »

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J Series® 2835 G Class Mid Power LEDs

 J Series® 2835 G Class Mid Power LEDs J Series 2835 G Class LEDs combine high efficacy and superior value in an industry-standard package. Optimized for both horticulture and general illumination applications, these LEDs are valued for their high efficacy and uniform appearance in applications such as downlights, troffers, panels and ... Read more »

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Luminus Releases Hospitality COB Series for Hotels and Restaurants

Luminus Releases Hospitality COB Series for Hotels and Restaurants Luminus Devices has announced its new Hospitality COB series featuring high color rendering, precise chromaticity control and Warm CCTs. With LES sizes ranging from 6mm to 22mm, and lumen output from 500 to 5000 lumens, the Luminus Hospitality COB series is the smart choice for beautiful, warm ... Read more »

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LUXEON 5050 Offers Advanced Options for the Horticulture Industry

LUXEON 5050 Offers Advanced Options for the Horticulture Industry Lumileds, a global leader in innovative lighting solutions and the originator of the 5050 LED, is again improving LUXEON 5050 Round performance and is characterizing the LED for use in the horticulture industry. For illumination applications, 70 CRI lumen performance increases by as much as 5lm. In ... Read more »

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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 ... Read more »

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