Digital Projection Titan 930, Руководство пользователя

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Digital Projection
M-Vision 930 Series
CHOOSING A LENS Reference Guide
80 Rev A January 2014
Choosing A Lens
A number of lenses are available. Which lens you choose depends on the screen size, image aspect ratio, throw distance and light output.
The following table shows all available lenses in order of their
throw ratios :
Throw ratios Throw distance range
0.84 - 1.03 : 1 zoom lens 1.5 - 4 m (4.9 - 13.1 ft)
1.56 - 1.86 : 1 zoom lens 2 - 7 m (6.6 - 23 ft)
1.85 - 2.40 : 1 zoom lens 2.5 - 10 m (8.2 - 32.8 ft)
2.40 - 4.00 : 1 zoom lens 4 - 12 m (13.1 - 39.4 ft)
To choose a lens, either calculate the throw ratio required, or use the lens charts provided within this section.
Notes
For information about individual lens
part numbers, see
Appendix A
at
the end of this document.