On 15/04/2012 22:07, Huge wrote:
On 2012-04-15, wrote:
On 15/04/2012 18:59, Dave Plowman (News) wrote:
In ,
wrote:
A sharp cutoff is achieved with a french flag. Many many cars with
halogen and HID units do this. LEDs will be no different. It's down to
the optics, not light source.


What makes you think LEDs need a baffle to throw half the light away?

What makes you think there's another way of doing it? Not a knowledge of
optics, obviously.


Seriously?

you do realise that you just modulate the drive current to turn a LED
on/off.

No mechanical parts required.

And that directs the light in a particular direction how, exactly?



by having multiple LEDs that you simple switch on/off

this is not a smooth transition but rather a discrete group of settings
- a digital rather than analogue directional control if you like.