View Full Version : IR and lasers

The Error Guy
12-11-2010, 08:37 AM
I know you can get laser detection cards that will show up an IR laser beam in the visible spectrum (i use them a bit) but is there an electronic version such as a sheet of "detection" material that would react in a way that would, say conduct electricity?

the reason I ask is to do with out ongoing development of MT systems, basicly with our engineering ability's we are unable to improve on existing MT hardware (capacitive and IR). IR is great but has a lot of size restrictions. capacitive is very thin, but requires an intensive manufacturing process, far far out of our league.

I was thinking that if we used the same principal of an LLP (laser light pane)="Diagram"]http://www.codelaboratories.com/images/LLP/LowPressure.jpg except instead of using cameras we used a material that reacts to the presence of IR laser light (such as IR detection cards). the easiest way would probably be conductivity so as the conductive state of the material changed we could pin point an X and Y coordinate and map in the same way as the camera would map it (to maximize hardware/software compatibility across different platforms)

Not sure if such a material exists, might be one for the invention books :D

Just getting around to ordering some new IR LED's and line generators, should get a working build done before new years :punk

13-11-2010, 01:11 AM
Working link here:


13-11-2010, 08:25 AM
Nice diagram there, don't burn your finger though :)

The Error Guy
13-11-2010, 10:37 AM
Nice diagram there, don't burn your finger though :)

Not the fingers i'm worried about (low powered lasers) its more the eye. IR doesn't trigger any blink reflex. it just sits around burning your retina.