In message , Cynic
writes
On Fri, 28 Aug 2009 14:17:20 +0100, bof
wrote:

LEDs are inherently more directional than other forms of lighting.
That is in fact a good thing, because any light that is illuminating
areas you don't *need* to be illuminated is wasted energy. Coverage
angles are increased either by mounting several LEDs at different
angles, or with suitable optics (usually diffuser/lens combination,
which increases the price).

As far as car running lights go, they are rubbish. Look at the angle of
view they disapear at on a Mercedes. It is very narrow.

At night I find the on/off flickering of LED brake lights particularly
annoying

I have never noticed such an effect.

At night move you sight from left to right and you should see the effect
quite clearly, same for the new(ish) flashing orange 'road works' lamps
on motorways, when they're on they are actually flashing.


Are you sure it is not that the
driver has a light pressure on the brake pedal? Any brake light will
flicker under that condition.

Nope not that.


--
bof at bof dot me dot uk