Originally Posted by space2001
I have seen this projector and many incarnations of it.
Sony Found a way to convert there blue laser into pure white lite. They can stack the lasers for more lumen. In the Model you see which is the FH36 modded with the laser light there are 4 blue lasers.
It is possible that Sony use the same method that it is a new way to easily get the right white temprature for LED lighting called Remote Phosphorus
The drive light in LED are normally a blue/ultraviolet that is coated with phosphorus material in a mix that gives desired color.
A company called Intematix
has created Phosphorus called ChromaLit into solid plates that can be placed in a distance from blue LEDs that are not coated in phosphorus.
"Phosphor is the luminescent material critical to many lighting applications, especially LEDs. Most white LEDs are in fact blue LEDs with a phosphor coating. Phosphor absorbs the light at the blue wavelength and reemits the photons at longer wavelengths. The phosphor emits up to 95 percent of the visible lumens from a white LED."
Advantage is that much of the heat is removed from the LED drive itself so more powerful drives can be used without damaging the phosphorus.
Up to 30% more light efficiency pr
CRI up to 98.
The Phosphor plated can be replaced by anybody like a color filter if one wants another white temperature.
This method can also be used with Blue/Ultraviolet Lasers in the same way. A coming application that has not yet reached market in known products yet.
The use with Blue Laser as lightsource is very similar to something Toshiba calls LD Lighting
which uses lasers to light up an emitter.
It is quite possible that Sony can use a similar type of Blue/Ultraviolet Diode Laser that are used in Blu-Ray drives in a cluster and put a Remote Phosphorus plate in a convenient place in the light path to create the right white light temperature that is useful for a projector.
For those techno nerds here that want to know more, here is a short presentation video from Intematix; http://youtu.be/w22wiG2qOOY
A short video how Remote Phosphorus is used in a video lighting spotlight; http://youtu.be/sZyss_TuyDs
If you have LED downlights in your house and are not happy with the color temperature, you can buy some blue LEDs and get Remote Phosphorus plates from here in various color temperatures and shapes to try out before totally remodelling your lighting: http://www.digikey.com/product-search/en/optoelectronics/optics-remote-phosphor/525582?k=Phosphor