Throw Distance - Christie Mirage HD User Manual

Lens Throw Ratio
0.73 SX+
1.2:1 (short throw) SX+
1.2:1 (long throw) SX+
1.45-1.8 SX+
1.8-2.5 SX+
2.5-4.5 SX+
4.5-7.3 SX+
0.67 HD
1.1:1 FP HD
1.1:1 RP HD
1.38 – 1.84 HD
1.84 – 2.58 HD
2.58 – 4.15 HD
4.15 – 6.74 HD
NOTES: Calculations are not shown for 1.2:1 lenses. TD = projector distance from the screen to the center of the projector's front feet W =
screen (image) width.
Mirage S+/HD, Matrix S+/HD, Christie HD/DS/DW, DLV User's Manual
020-100001-04 Rev. 1 (12/07) - Software v1.6g or higher
Calculating Throw Distance
It is important throw distance be
precisely calculated for your
installation using the appropriate
formula from the chart below. To
calculate throw distance you must
know the screen size and the lens
type installed in the projector. In
general, the larger you want the
image to be the greater the distance
you must allow between the lens and
the screen.
NOTES: 1) Throw distance is measured from the screen to the center of the
projector's front feet. 2) This measurement is not necessarily parallel to the floor as
the projector and screen may be inclined. 3) Due to lens manufacturing, throw
distance calculations have a tolerance of
Table A-1 Throw Distance Formulas
Throw Distance Formula Inches (cm)
0.762 x screen width + 2.65 (6.73)
1.2865 x screen width + 3.94 (10.01)
1.2521 x screen width + 4.259 (10.818)
Min. 1.4789 x screen width – 1.42 (3.607)
Max. 1.8655 x screen width – 3.23 (8.204)
Min. 2.0424 x screen width – 29.19 (74.143)
Max. 2.6076 x screen width – 6.55 (16.637)
Min. 2.6347 x screen width – 4.50 (11.43)
Max. 4.783 x screen width – 11.65 (29.591)
Min. 4.5126 x screen width – 2.58 (6.553)
Max. 7.423 x screen width – 9.92 (25.197)
0.7058 x screen width + 2.23 (5.664)
1.194 x screen width + 2.67 (6.782)
1.1447 x screen width + 3.76 (9.550)
Min. 1.3834 x screen width + 1.79 (4.547)
Max. 1.8835 x screen width + 1.44 (3.658)
Min. 1.8971 x screen width – 3.95 (10.033)
Max. 2.5974 x screen width – 3.64 (9.246)
Min. 2.4591 x screen width +11.33 (28.778)
Max. 4.112 x screen width + 9.0389 (22.962)
Min. 4.0813 x screen width + 10.664 (27.0256)
Max. 6.8869 x screen width + 10.695 (27.178)

Throw Distance

±
5%.
Screen Diagonal Inches (cm)
Min. Max.
73.75 (187.3) 215 (543.1)
59 (149.86) 147.5 (374.65)
147.5 (374.65) 737.5 (1873.25)
78.75 (199.39) 542.5 (1377.95)
62.5 (158.75) 437.5 (1111.25)
78.75 (200.02) 546.25 (1387.5)
57.5 (146.05) 393.75 (1000.1)
120 (304.8) 550 (1397)
67.5 (171.45) 546.25 (1387.5)
131.25 (333.38) 546.25 (1387.5)
81.25 (206.38) 538.75 (1368.4)
73.75 (187.3) 215 (543.1)
59 (149.86) 147.5 (374.65)
147.5 (374.65) 737.5 (1873.25)
78.75 (199.39) 542.5 (1377.95)
62.5 (158.75) 437.5 (1111.25)
78.75 (200.02) 546.25 (1387.5)
57.5 (146.05) 393.75 (1000.1)
120 (304.8) 550 (1397)
67.5 (171.45) 546.25 (1387.5)
131.25 (333.38) 546.25 (1387.5)
81.25 (206.38) 538.75 (1368.4)
Appendix D
Screen Width Inches (cm)
Min. Max.
59.1 (150) 172 (437)
47.2 (120) 118 (300)
118 (300) 590 (1499)
63 (160) 434 (1103)
50 (127) 350 (889)
63(161) 437 (1111)
46 (116) 315 (800)
96 (244) 440 (1120)
54 (136) 437 (1111)
105 (267) 437 (1111)
65 (164) 431 (1096)
59 (150) 172 (438)
47.2 (120) 118 (300)
118 (300) 590 (1500)
63 (159) 434 (1103)
50 (127) 350 (889)
63 (161) 437 (1111)
46 (116) 315 (800)
96 (244) 440 (1120)
54 (136) 437 (1111)
105 (267) 437 (1111)
65 (164) 431 (1096)
D-1