Chris,
Define "bright". The sun is "bright" but I can't see a class 2 laser label
from here.
Sorry, not really trying to pick on you, but in my opinion that is sort of
how the IEC825 and other standards sometimes get stuff that hampers product
development. A reasonable but un-quantified idea is made sometime made law.
Then those charged with enforcing it have no tools or metrics to work the
issue and away we go. Like anything else, determine if there is a potential
or real hazard with data and science first, then make it law if necessary.
On the other hand, just because a standard doesn't have a reference doesn't
mean there is no risk and is generally the lowest level of safety anyway. If
you have grounds for concern I would certainly recommend that you test to
find out.
Gary
By the way, I have noticed the traffic lights going up do put out the light,
and they don't seem to ramp up when coming on. They just really "snap" on.
I've often wondered how they do that so quickly. The effect is pretty
amazing.
-----Original Message-----
From: James, Chris [mailto:c...@dolby.co.uk]
Sent: Friday, March 10, 2000 3:31 AM
To: 'ricklinf...@phobos.com';
emc-p...@majordomo.ieee.org
Subject: RE: IEC 825 and Light Emitting diodes.
We have a product using a focused high power led array which
we had tested
and was determined as Class 2 and so mark the equipment
such.
There are a number of high power leds on the market for use
as indicators in
areas of high ambient light, i.e. public display boards.
When viewed from close range such leds are extremely bright.
It is leds such
of this type that I would consider prudent on having tested.
Regards,
Chris
-----Original Message-----
From: ricklinf...@phobos.com [mailto:ricklinf...@phobos.com]
Sent: Thursday, March 09, 2000 6:33 PM
To: emc-p...@majordomo.ieee.org
Subject: IEC 825 and Light Emitting diodes.
Hi group,
When evaluating IEC 825-1 for fiber optic LAN transceivers I
came across
requirements for LED's. I have known that the EU had some
requirements for
LED emission. Being on the US side of the pond I have not
seen how it is
applied.
Are manufactures doing fault testing on LED to ensure the
class 1 levels
are maintained?
Are manufacturers labeling products with LED's (this covers
just about
every electronic product I know of) with the "CLASS 1 LED
PRODUCT" as
required in 5.12 of IEC 825?
Rick Linford
-------------------------------------------
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail to:
majord...@ieee.org
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Jim Bacher: jim_bac...@mail.monarch.com
Michael Garretson: pstc_ad...@garretson.org
For policy questions, send mail to:
Richard Nute: ri...@ieee.org
-------------------------------------------
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail to:
majord...@ieee.org
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Jim Bacher: jim_bac...@mail.monarch.com
Michael Garretson: pstc_ad...@garretson.org
For policy questions, send mail to:
Richard Nute: ri...@ieee.org
-------------------------------------------
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail to:
majord...@ieee.org
with the single line:
unsubscribe emc-pstc
For help, send mail to the list administrators:
Jim Bacher: jim_bac...@mail.monarch.com
Michael Garretson: pstc_ad...@garretson.org
For policy questions, send mail to:
Richard Nute: ri...@ieee.org
