[tig] Theatre Lighting

john.pytlak at kodak.com john.pytlak
Tue Nov 18 00:14:55 GMT 2003


Yes, gain screens need to be curved per SMPTE Recommended Practice RP95 to 
reflect light back to the center of the audience.  It will also help 
reject some of the stray light.

Here is an article that I wrote:

http://www.kodak.com/US/en/motion/newsletters/pytlak/dec99.shtml

John
(signed by:)
John P. Pytlak
Senior Technical Specialist
Customer Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, New York 14650-1922  USA
Telephone: +1 585 477 5325
Cell: +1 585 781 4036
Fax: +1 585 722 7243
e-mail: john.pytlak at kodak.com
website: http://www.kodak.com/go/motion



Greg Dildine wrote:
...the red "rope" lights...that outline the stairs on both sides of the
theater...reflects HORRENDOUSLY in the screen.  Especially in the ones 
whose
screens are slightly curved inwards to accommodate the not quite long 
enough
throw or what ever the reason is for the curves at the edges.

I always thought the curved screen was an attempt to maintain focus and/or
even illumination via a constant distance to the screen from the projector
lens.

Jim DeLuca, Sr Video Engr.
Crest National Digital Media - Video Lab
Hollywood, CA











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