IBC: laser projection one step closer to the cinema
Projection specialists have at the trade fair International Broadcasting Convention (IBC) in Amsterdam for the first time presented a feature-length film with the prototype of a 3D laser projector that meets the rigorous standards of the Digital Cinema Initiatives (DCI). Since laser light sources can shine much brighter than xenon bulb or other high-intensity discharge lamps, the cinema industry which promises to achieve a solution of the problem brightness for 3D screenings. During reach 2D projections, according to Christie usually has a brightness of about 48 cd/m2 (14 ft-L) on the canvas, come on with the usual 3D projectors only 10 cd/m2 (3 ft-L) the canvas. This is partly because the various 3D methods each need lenses for the treatment of 3D images, which absorb a lot of light, and in most applications, images will appear much shorter than with 2D.
Prior to the screening of Martin Scorsese's "Hugo Cabret" in Amsterdam, said Dr. Don Shaw, senior director of product management for Christie, the former faint illumination of 3D movies is responsible for complaints from moviegoers headaches, fatigue or painful eyes. "This is similar to the symptoms that you get when you read a book in dim light," says Shaw.
In order to address the problem so far, sometimes two projectors are used, Christie's has about two 2K or 4K Solaria Series projectors in your rack system with automatic calibration as a duo-system in which the images for the left eye of one who intended for the right eye, are shown from the other projectors. However, this solution does not reach the brightness of a 2D projection and is used because of its high purchase and maintenance costs very little. Laser light sources are, however, precisely because of their durability and their low energy consumption also economically very interesting.
The first public DCI-compliant laser projection of film clips had shown two years ago by Kodak. Due to credit issues, the Company's plans, however, do not continue and licensed the technology to IMAX. The specialist in large format film projection has announced the launch for late 2013. Whether Christie is already so far by then remains to be seen. Acted, the employed at IBC projector it is a prototype, are to market "half a dozen soft stellender decisions" necessary explained Don Shaw.
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