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what’s it mean?
Prowling through a sign list for a local authority tender, I’ve come across this: [i]Backlit VCP Exterior Light[/i] I’ve been in the business forty years but it means nothing to me…obviously I could ring some pen pusher in the town hall and ask – but I don’t want to appear a complete dunce. Could it just be in the wrong section and refer to something only Sparks know about or have I been left behind in the terminology stakes? Help!
Martin 🙁 -
4 Replies
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visual comfort probability
Dont ask me I asked Google.. 🙄
And as far as I can see It is in reference to interior lighting.
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Cheers Tim….Visual what?
Martin -
The Visual Comfort Probability , or VCP, of a lighting system is a rating that indicates the percentage of people that will find a given discomfort glare acceptable. The VCP rating is applicable direct lighting fixtures with the viewer in a specific location and looking in a particular direction. A VCP rating of 70% is usually considered acceptable, but 80% is required for areas with computer monitors. VCP differences between fixtures of 5 or less are not significant.
It’s to do with internal lighting.
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You learn something everyday…
Cheers mate
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