Christie Roadster S+ User Manual page 150

THROW DISTANCE
D-2
Roadster/Mirage S+ User's Manual
Figure D-1 provides the recommended throw distance formulas for each of the
"Compact" Thunder Lenses. Pre-calculated throw distances for the complete range of
lens types and screen sizes appear in the charts and graphs on the following pages.
Refer to these examples to quickly determine the proper throw distance (±5%) for
your installation and lens.
Lens Throw Ratio
0.73:1 Fixed
0.7588 x screen width (
1.2:1 Fixed (short)
1.2:1 Fixed (long)
1.45 – 1.8:1
Min 1.4781 x screen width (
Max: 1.839 x screen width (
1.8 – 2.5
Min: 1.8301 x screen width (
Max: 2.6019 x screen width (
2.5 – 4.5
Min 2.6147 x screen width (
Max 4.7718 x screen width (
4.5 – 7.3
Min: 4.5727 x screen width (
Max: 7.4058 x screen width (
NOTES:1) Make sure to use HORIZONTAL screen size in all formulas.2 )Calculations not available for 1.2:1 Fixed lenses.
Throw Distances for Compact Thunder Lenses
Image Width
cm
150
165
180
195
210
225
240
255 100
270 105
285 111
300 117
315 123
330 129
345 135
360 140
375 146
390 152
405 158
420 164
435 170
438 171
NOTE: Maximum throw distance=10m (33 ft.). Use throw distance of 1.0-1.3m (39-
51") for optimized lens performance.
Table D-1. Throw Distance Formulas
Throw Distance Formula cm (in.) ±5%
cm) + 31.211 cm
N/A
1.25 x screen width ( cm) + 13.6 cm
cm) +19.576 cm
cm) + 21.392 cm
cm) – 5.828 cm
cm) – 3.251 cm
cm) – 5.8132 cm
cm) – 25.91 cm.
cm.) – 9.0449 cm
cm) – 21.974 cm
0.73:1 Fixed Lens
Throw distance
( )
in cm
59 145
64 156
70 168
76 179
82 191
88 202
94 213
225
236
248
259
270
282
293
304
316
327
339
350
361
364
Diagonal Screen Size
in cm
73-215 188-548
N/A N/A
37-383 95-973
64-536 163-1375
56-536 145-1375
66- 169-1375
536
78- 200-1375
536
in
57
61
65
70
74
79
83
88
92
97
101
105
110
114
119
123
128
132
137
141
142