I bought from Amazon.de one bulb OSRAM P-VIP 240/0.8 E20.8
I didn't payed attention that the bulb that I needed was E20.9, so the one that I bought was 2mm smaller in diameter, and it didn't fit tightly inside the lamp.
After all I managed to install it, but the image is so dimmed.
I tried to ship it back, but it looks that I can't...Amazon's policy that I cand return it because it contains mercury.
So I payed 80€ for a bulb that it's ok only for movies...for TV, games and as a monitor for my Mac Mini is horrible.
The original bulb exploded inside the lamp, and the piece of glass in front of the bulb has two scratches that can be seen when projected...
So I deicided to order the original 5J.J7L05.001 lamp with bulb included from beamershop24.net for 200€.
I hope it will be as bright as the original one.