Originally Posted by spectrogj
Won't work with LED or laser projectors
Best spectrum for Omega is with DLP projectors, throw ratio of 1.5:1 or better
To be more precise : Omega is designed for professional DLP projectors with Xenon lamp.
If I remember correctly, the "LCD" version of the Omega filter is a modified filter for one specific professional LCD projector with Xenon lamp (probably a Sony SXRD cinema projector).
The further away from these wide spectrums your projector is, the worse the colour will get.
For consumer projectors which use UHP (Mercury) lamps, there can be huge variations from one projector model and from one lamp model to an other since manufacturers don't care much about their output spectrum. But if you want to try out a new projector nobody tested, the DLP filter with a DLP projector has the best chance of turning out right.
LED projectors change a lot year over year since high intensity LEDs are being constantly improved.
The current LED output spectrum doesn't fare well with Omega but there is no way to predict how future LED technology will improve and how manufacturers will implement them : it is perfectly possible to make a LED arrangement that will output a wide spectrum (like what's done for "natural light" lamps), but there is very little incentive for projector manufacturers to implement one.
Laser direct output provides a single wavelength per primary colour : it is fundamentally incompatible with Omega.
Laser to phosphor is different, it does output a spectrum but I am not familiar with phosphor output spectrum so I'd say all bets are off.
There is a way to turn a direct laser single wavelength output into a spectrum but projector manufacturers will probably never implement this technique because it's completely foreign to this usage domain : it requires high power ultra-short burst lasers (think femto-second) and all research in this area is concentrated in reducing the apparition of spectrums to keep a clear single wavelength (for long-distance fibre optics communication).