RAI auditorium with high gain screen diminishment...and silver too~!

Lasers, Christie, IBC…Silver Screen Why [Update 2]

Some answers:   [Other answers in Tripping Over the Laser Light – Fantastic~!]

Output is 63,000 lumens from a modified 4230 projector, which normally has ~34,000 lumens. The 6 x ~10,000 lumen laser elements are given 60 amps/3 phase, in what seems to be a 2+ meter rack. The lasers are collumated to white, then divided again. The mirrors are said to be specially cooled to handle the extra power.

The screen is 2.4 gain, silver, and 16 meters wide. The content is standard 24 fps/eye, triple flashed. XPAND system. Remastered for higher light level…but we don’t know the mastering level.

Even though there are a few seats in the cinema which are getting 48 candela (what the Americans call 14 foot-Lamberts), most of the viewers aren’t getting close to that. Does the studio master to those few sets of eyes or do they master for an average.

We also don’t know, and are very interested in, the science of the magic multiple, random frequenciy vibrators lined up in three rows across the back of the screen. We can understand that it would have the effect of ‘defocusing’ the speckle of the lasers, especially in the green band. But it really needs explaining.

Notwithstanding, we look forward to seeing the presentation. It is a milestone regardless of how they pull it off. And you just have to love the science of it all.

Follow-up Article: Tripping Over the Laser Light–T’was Fantastic~!

Don’t miss: CineTechGeek » Demonstration of Silver Screen compromise

RAI auditorium with high gain screen diminishment...and silver too~!

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