Digital Projection lightning series, Руководство пользователя

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D—18
Advanced User Information
ADVANCED
LBV00056; Revision C - 01/03/03
SXGA 2.5 - 4.0:1 Zoom Lens
BASIC PARAMETERS
Throw Ratio 1 2.5 - 4.0 : 1
Minimum Screen Distance 2 5 m (16.4 ft)
Maximum Screen Distance
2
40 m (131.2 ft)
Full Beam Angle 22.60° - 14.25°
Rising/Falling Front 3 ±512 pixels
Aperture F/3
Effective Focal Length 44.6 - 54.5 mm
Distortion 4 < 1.2%
Transmission > 85%
Centre MTF @ 33 lp/mm > 40%
Corner MTF @ 33 lp/mm > 30%
Maximum Object Radius 20.53 mm (0.81”)
MECHANICAL
Lens Extension 5 108 mm (4.25”)
Maximum Size 270.7 x 150 mm dia. (10.66” x 5.9”)
Notes
1 Full active area width.
2
Limits for specified performance. Does not include lens extension.
3 Specification indicates maximum possible lens shift. Actual lens shift obtainable during
operation will vary depending on projector model.
4 Measured at 540mm.
5
Distance from projector front panel to front of lens.