Archive
Specifying Variable CCT Lighting Fixtures - Part 3
Issue 71 Feb / Mar 2013
In the third part of his series on colour tunability in LED fixtures, Dr Geoff Archenhold explains the different methods for creating variable CCT luminaires and suggests some questions specifiers can ask to ensure they get the right product.
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2012: A solid year for the lighting industry
Issue 70 Dec / Jan 2013
Our LED expert Dr Geoff Archenhold looks back at a year of consolidation - though not imagination - in the world of solid state technology.
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Defining Colour Tunability - Part 2
Issue 69 Oct / Nov 2012
In his last article, Dr. Geoff Archenhold introduced the concepts of human colour perception, spectral power density, luminosity and CIE functions. In part two he covers the definitions of CCT and CRI and also addresses some issues that future vCCT fixture manufacturers will need to take into account to achieve replicable CCT luminaires.
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Lumenpulse Lumentalk
Issue 69 Oct/Nov 2012
David Morgan is excited about a breakthrough technology that enables digital control of LED lighting over existing AC power lines... and reduces installation costs by 30%.
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Defining Colour Tunability
Issue 68 Aug / Sep 2012
Lighting fixture companies are in the process of developing variable CCT LED fixtures but many of them will not meet lighting designers’ specifications. In the first of a two-part article, Geoff Archenhold reports on what is needed to develop a quality lighting system that can vary CCT.
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LED + Building
Issue 67 Jun / Jul 2012
Thankfully, this year’s Light & Building passed uneventfully with no volcano eruptions to add to the challenge of walking a few kilometres between halls to see thousands of exhibitors amongst the more than 190,000 visitors to the event.
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PJR Panorama seamless luminaires
Issue 66 Apr/ May 2012
After visiting this year’s ARC Show, our product reviewer David Morgan takes a look at the Panorama series of seamless luminaires from PJR Engineering.
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Archenhold on ARC
Issue 66 Apr / May 2012
Our LED expert Dr Geoff Archenhold found a wide diversity of new LED lighting products exhibited at The ARC Show... despite this being a Light + Building year.
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Europe needs to invest to compete
Issue 65 Feb / Mar 2012
The European Lighting Industry - a dying has been or the leading innovators of the future. The EU believes the latter... do you? Our LED expert Dr Geoff Archenhold reports.
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Archenhold's Almanac 2011
Issue 64 Dec / Jan 2011/2
Our LED expert Dr Geoff Archenhold takes us through the developments of the year that was and contemplates a slowing down of solid state lighting innovation in 2011.
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GE Lumination
Issue 64 Dec / Jan 2011/2
Our product reviewer David Morgan takes a look at a luminaire with great potential for the architectural market: GE’s Lumination LED range.
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Nicolaudie STICK 2 and Pharos TPC
Issue 64 Dec / Jan 2011/2
David Morgan looks at two of the latest touch panel control systems developed with LED lighting in mind: Nicolaudie’s STICK 2 and Pharos’ TPC.
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2000LM LED MODULE BENCH TEST
Issue 64 Dec / Jan 2011/2
Following our benchtest of 1000lm LED modules in issue 62, our LED expert Dr Geoff Archenhold tests high power 2000lm modules to see if they exceed CFL equivalents in common downlighter applications.
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Lumenpulse Lumentalk
Issue 69 Oct/Nov 2012
David Morgan is excited about a breakthrough technology that enables digital control of LED lighting over existing AC power lines... and reduces installation costs by 30%.
more...
Specifying Variable CCT Lighting Fixtures - Part 3
Issue 71 Feb / Mar 2013
In the third part of his series on colour tunability in LED fixtures, Dr Geoff Archenhold explains the different methods for creating variable CCT luminaires and suggests some questions specifiers can ask to ensure they get the right product.
more...
