PeauProductions

One of my customers Gabriel Giacomini, who recently built a huge 10 x 3 meter wall in Brazil used the LED-LP technique which is typically not done often and never before on such a large setup.  I found out what LEDs he used, and decided to offer them up on my store where they have been for a couple months now.

The LEDs are OSRAMS FH4550 and are 850nm.  The reason why they work so well and can be used in LED-LP setups is that they have a VERY narrow half beam angle of only 3 degrees.  This allows you to place them far apart from each other, in Gabriel’s case he placed them over 3 meters apart.

I recently traveled to Los Angeles to work on a angled touch screen for a DJ who wanted to use the multitouch interaction during a show to mix beats.  We setup a screen that was spaced 42 inches on the longest side, and we decided to go with the LED-LP technique using the narrow LEDs.  We calculated the spacing minimum we’d need in order to get the beams of the LEDs to converge once the projected image started (since it was a 3 degree half angle, the distance was about 6.5 inches from edge and we spaced them about every 0.4cm with 0.6cm or so being the maximum).

Below are some pictures and a video of the LEDs all wired up and a custom camera from my store with a vari-focal lens on it: