Ceiling Installation; Reflecting The Image - NEC VT45 User Manual

Ceiling Installation

Screen Bottom/
D
Lens Center
B
Screen Center
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and top of screen
α = Throw angle
Lens Offset 5.4mm
Screen Size
Diagonal Width
inch mm inch mm
25 635 20
30 762 24
40 1016 32
60 1524 48 1219
67 1702 54 1361
72 1829 58 1463
80 2032 64 1626
84 2134 67 1707
90 2286 72 1829
100 2540 80 2032
120 3048 96 2438
150 3810 120 3048
180 4572 144 3658
200 5080 160 4064
210 5334 168 4267
240 6096 192 4877
261 6629 209 5304
270 6858 216 5486
300 7620 240 6096
B = Vertical distance between lens center and screen center
C = Throw distance
D = Vertical distance between lens center and top of screen
α = Throw angle
WARNING
• Installing your projector on the ceiling must be done by a
qualified technician. Contact your NEC dealer for more
information.
* Do not attempt to install the projector yourself.
• Only use your projector on a solid, level surface. If the
projector falls to the ground, you can be injured and the
projector severely damaged.
• Do not use the projector where temperatures vary greatly.
The projector must be used at temperatures between 32˚F
(0˚C) and 95˚F (35˚C).
• Do not expose the projector to moisture, dust, or smoke.
This will harm the screen image.
• Ensure that you have adequate ventilation around your
projector so heat can dissipate. Do not cover the vents on
the side or the front of the projector.
Projector feet
44.6 mm / 1.76"
α
Throw Distance
C
B
Height
inch mm inch
508 15 381 8
610 18 457 9
813 24 610 12
36 914 18
40 1021 20
43 1097 22
48 1219 24
50 1280 25
54 1372 27
60 1524 30
72 1829 36
90 2286 45
108 2743 54
120 3048 60
126 3200 63
144 3658 72
157 3978 78
162 4115 81
180 4572 90
C
wide
mm inch mm - inch
191 36 910 -
229 43 1100 -
305 58 1470 -
457 87 2220 -
511 98 2490 -
549 105 2670 -
610 117 2970 -
640 123 3120 -
686 132 3350 -
762 147 3730 -
914 176 4480 -
1143 220 5600 -
1372 265 6730 -
1524 294 7480 -
1600 309 7860 -
1829 354 8980 -
1989 385 9770 -
2057 398 10110 -
2286 443 11240 -
If your projector is mounted on the ceiling and your image is
upside down, use the "Menu" and "Select" buttons on your pro-
jector cabinet or LM buttons on your remote control to correct
the orientation. (See page E-33.)

Reflecting the Image

Using a mirror to reflect your projector's image enables you to
enjoy a much larger image. Contact your NEC dealer if you need
a mirror. If you're using a mirror and your image is inverted, use
the "Menu" and "Select" buttons on your projector cabinet or
LM buttons on your remote control to correct the orientation.
(See page E-33.)
E–16
D
tele
mm inch mm
39 1000 0 0
48 1210 0 0
64 1620 0 0
96 2450 0 0
108 2740 0 0
116 2940 0 0
129 3270 0 0
135 3440 0 0
145 3690 0 0
161 4100 0 0
194 4930 0 0
243 6170 0 0
292 7410 0 0
324 8240 0 0
341 8650 0 0
389 9890 0 0
424 10760 0 0
438 11130 0 0
487 12370 0 0
α
wide tele
degree - degree
11.8 - 10.8
11.7 - 10.7
11.7 - 10.7
11.6 - 10.6
11.6 - 10.6
11.6 - 10.6
11.6 - 10.6
11.6 - 10.5
11.6 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5
11.5 - 10.5