Brian About 40yrs ago, I joined a company here where all the overhead lighting was by unbaffled fluorescent tubes,- and fairly soon I was having a lot of eyestrain problems - only solved for me when I got my first pair of photochromic/ "transitions" type lenses.
We then had the same issue at home much more recently when I fitted the first set of halogen lights with the "cool white" or "daylight" colour temperatures (around 4000-6000K colour temperature), and so had to change them for the "warm white" sort which is somewhat yellower (lower colour temperature - around 2700K- 3000K). I also suffer quite badly in bright sunlight if I wear anything but photochromic lenses, and so I'm one of those who is very sensitive in this respect, and I think there may be many others like me ) - and thus I am worried if this issue becomes more widespread over here. John E Allen W.London, UK -----Original Message----- From: Brian O'Connell [mailto:oconne...@tamuracorp.com] Sent: 22 June 2016 18:51 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] AMA Warns of Harm from LED Streetlights’ Blue Light Found the AMA release here: www.ama-assn.org/ama/pub/news/news/2016/2016-06-14-community-guidance-street-lighting.page Almost ten years ago, saw an article that AMA says color over 3000 K not good. And much external LED stuff seems to be 4000 K or more. Am still waiting for data indicating actual disruption of circadian rhythm and/or decreasing visual acuity in humans. LED magazine was talking about this over five years past, and the IES published this in 2010: http://www.ies.org/PDF/PositionStatements/PS-03-10.pdf Suspect LED implementations will see a period where humans learn to accept a new norm. Those that cannot adapt will be submitted to the Klingon High Command for disposition. My professional recommendation is to not stare at the street lamp. Anecdotally, we had a few complaints about blue hue of new office lighting for a few weeks, but all are now happy as a gopher in soft dirt, and have become decidedly compliant with all corporate edicts. But most importantly, LED lighting, when done correctly, reduces wide-spectrum light pollution, so for sake of my desert trips, all must use LEDs. But, have noted that some of the LED drivers are serious noise problems (both RE and CE). Brian From: John Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Wednesday, June 22, 2016 10:09 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] AMA Warns of Harm from LED Streetlights’ Blue Light Just had a routine info email from the ECM Web highlighting an interesting American Medical Association (AMA) article on the potential harmful effects of LED streetlights - see here: http://electricalmarketing.com/blog/ama-warns-harm-led-streetlights-blue-light?NL=ECM-07&Issue=ECM-07_20160622_ECM-07_825&sfvc4enews=42&cl=article_1_b&utm_rid=CPG04000000025478&utm_campaign=8880&utm_medium=email&elq2=0cf944f7f4f14ecbb045b2dbb57fc4de I wonder what the effects could be in the future – and if anyone else, anywhere, has already picked up/investigated this subject? John E Allen W.London, UK - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <sdoug...@ieee.org> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com>
