I apologise in advance if what I a describing in this post is very naive.
I would like to have a line of LEDS, for example 10. Which project a visible line at a distance of 10m, this line should be 2.5cm wide. The LEDS I am using will depend on what power will need to be used to achieve this goal, the line should be visible under daytime ambient light. I presume some kind of lens will be needed, a low power diverging?
As a reference point the type of line I am attempting to produce is (http://www.gizmag.com/xfire-bike-lane-safety-light/24282/), although I will be using a line of LEDS instead of a single one.
Thanks in advance :) Alex