Appendix D
Throw Distance
Mirage S+/HD, Matrix S+/HD, Christie HD/DS/DW, DLV User’s Manual
D-1
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
±
5%.
Table A-1 Throw Distance Formulas
Screen Diagonal Inches (cm)
Screen Width Inches (cm)
Lens Throw Ratio
Throw Distance Formula Inches (cm)
Min.
Max.
Min.
Max.
0.73 SX+
0.762 x screen width + 2.65 (6.73)
73.75 (187.3)
215 (543.1)
59.1 (150)
172 (437)
1.2:1 (
short throw
) SX+
1.2865 x screen width + 3.94 (10.01)
59 (149.86)
147.5 (374.65)
47.2 (120)
118 (300)
1.2:1 (
long throw
) SX+
1.2521 x screen width + 4.259 (10.818)
147.5 (374.65)
737.5 (1873.25)
118 (300)
590 (1499)
1.45-1.8 SX+
Min. 1.4789 x screen width – 1.42 (3.607)
Max. 1.8655 x screen width – 3.23 (8.204)
78.75 (199.39)
62.5 (158.75)
542.5 (1377.95)
437.5 (1111.25)
63 (160)
50 (127)
434 (1103)
350 (889)
1.8-2.5 SX+
Min. 2.0424 x screen width – 29.19 (74.143)
Max. 2.6076 x screen width – 6.55 (16.637)
78.75 (200.02)
57.5 (146.05)
546.25 (1387.5)
393.75 (1000.1)
63(161)
46 (116)
437 (1111)
315 (800)
2.5-4.5 SX+
Min. 2.6347 x screen width – 4.50 (11.43)
Max. 4.783 x screen width – 11.65 (29.591)
120 (304.8)
67.5 (171.45)
550 (1397)
546.25 (1387.5)
96 (244)
54 (136)
440 (1120)
437 (1111)
4.5-7.3 SX+
Min. 4.5126 x screen width – 2.58 (6.553)
Max. 7.423 x screen width – 9.92 (25.197)
131.25 (333.38)
81.25 (206.38)
546.25 (1387.5)
538.75 (1368.4)
105 (267)
65 (164)
437 (1111)
431 (1096)
0.67 HD
0.7058 x screen width + 2.23 (5.664)
73.75 (187.3)
215 (543.1)
59 (150)
172 (438)
1.1:1 FP HD
1.194 x screen width + 2.67 (6.782)
59 (149.86)
147.5 (374.65)
47.2 (120)
118 (300)
1.1:1 RP HD
1.1447 x screen width + 3.76 (9.550)
147.5 (374.65)
737.5 (1873.25)
118 (300)
590 (1500)
1.38 – 1.84 HD
Min. 1.3834 x screen width + 1.79 (4.547)
Max. 1.8835 x screen width + 1.44 (3.658)
78.75 (199.39)
62.5 (158.75)
542.5 (1377.95)
437.5 (1111.25)
63 (159)
50 (127)
434 (1103)
350 (889)
1.84 – 2.58 HD
Min. 1.8971 x screen width – 3.95 (10.033)
Max. 2.5974 x screen width – 3.64 (9.246)
78.75 (200.02)
57.5 (146.05)
546.25 (1387.5)
393.75 (1000.1)
63 (161)
46 (116)
437 (1111)
315 (800)
2.58 – 4.15 HD
Min. 2.4591 x screen width +11.33 (28.778)
Max. 4.112 x screen width + 9.0389 (22.962)
120 (304.8)
67.5 (171.45)
550 (1397)
546.25 (1387.5)
96 (244)
54 (136)
440 (1120)
437 (1111)
4.15 – 6.74 HD
Min. 4.0813 x screen width + 10.664 (27.0256)
Max. 6.8869 x screen width + 10.695 (27.178)
131.25 (333.38)
81.25 (206.38)
546.25 (1387.5)
538.75 (1368.4)
105 (267)
65 (164)
437 (1111)
431 (1096)
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.