Gwynne
Any coloured light is likely to have an adverse effect on colour and tonal
contrast and it is my understanding that this is likely to be particularly
so where blue light is used, as the human eye has fewer blue colour
receptors. The reduction or elimination of contrast is likely to affect
spatial perception, resulting in disorientation for everyone. This is
likely to be exacerbated where the blue light is, or appears to be, dimmer
than a luminaire with good colour rendering properties. Where the eye
condition itself already reduces spatial perception the use of blue light is
likely to be particularly disorientating.
In addition, the blue wavelength in the visible spectrum is also the source
of glare which is likely to be uncomfortable or painful for a number of
people (this is generally referred to as either disability or discomfort
glare) which can result in people with some eye conditions losing their
residual useful vision and, for a time, being rendered blind by the effects
of the blue light.
Regards
Chris
-----Original Message-----
From: David Froggatt [mailto:[log in to unmask]]
Sent: 25 March 2004 14:06
To: [log in to unmask]
Subject: Re: blue light toilets.
Gwynne
It would really depend on the lux levels and the impact of the light on
being able to distinguish colour and contrast, eg reading instructions on a
sirginge.
Glasgow's buchannan street actually has blue streetlights running the
length of it (for 'atmosphere' rather than discouraging drug use) and from
speaking to friends, colleages etc, i know opinion on them is divided, they
can aparently make white and yellow appear virtually identical.
cheers
david
David Froggatt
Access Consultant
Buro Happold
Four Winds
Pacific Quay
Glasgow
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United Kingdom
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-----Original Message-----
From: Gwynne, Mary [mailto:[log in to unmask]]
Sent: 25 March 2004 13:52
To: [log in to unmask]
Subject: blue light toilets.
Dear All,
What is your opinion on blue light toilets?
In Bournemouth the Council has installed blue lights in their toilets. The
effect of this is that it had the impact of reducing the number of discarded
used needles in public toilets. Apparently for users their veins are almost
impossible to see under blue light thereby making injection very difficult
if not impossible. Results in Bournemouth were 75% reduction in discarded
needles
What do you think of the idea?
Our officers would like to know what disabled people think of the idea.
Please send your comments to me or [log in to unmask]
Regards
Mary Gwynne
Policy Development Officer(Access)
* : <<...OLE_Obj...>> 01792 636733 (voice and text)
* : [log in to unmask]
* : Performance and Strategic Planning,
Chief Executive's Department.
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