Brian, The changing technology is being dealt with in several ways.
IEC 60825-2 has been developed as safety requirements for LEDs that are not lasers. At the 2005 IEEE PSES meeting an interesting paper was given. Light Emitting Diode Safety and Safety Standards by Altkorn, Milkovich and Rider was given. From the Abstract: Concerns about the safety of light emitted by LEDs are being raised as LED power output, wavelength coverage, and low-cost availability grow. Potential safety issues include ocular tissue damage and glare. Research, standard, and guidelines covering these and related issues are reviewed. The article includes a bibliography of 18 cited references. A good photometer that provides a graph of the spectral output is essential, in my opinion; it should be able to provide both broadband and eye sensitivity curves. There are reasons to be concerned about LEDs under some conditions. You should become informed as to the technical issues involved and take appropriate data on your products to support any needed actions to maintain a safe product in use. :>) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Kunde, Brian Sent: Tuesday, October 14, 2008 8:20 AM To: emc-p...@ieee.org Subject: Light Meter Recommondations First, I want to apologize to those who might be offended by this email and my lack of knowledge on this topic. But from time to time we hear about law suits (possible frivolous) dealing with eye damage from devices with displays and LEDs. What we would like to come up with a simple method to pre-test products with some kind of light meter and have it give us a number or graph that we can quickly determine if there is any reason to be concerned. So, 1. Am I crazy for even thinking this way? 2. Can anyone recommend such a light meter or other measuring device (make/models)? 3. Can anyone give me rough numbers, values, or a standard which defines light levels/frequency that we can use as a go/no-go value? Thanks to all for your time. The Other Brian LECO Corporation Notice: This communication may contain confidential information intended for the named recipient(s) only. If you received this by mistake, please destroy it and notify us of the error. Thank you. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.org Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc