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.
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Instructions: http://listserv.ieee.org/request/user-guide.html
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