E–13
B
D
E
C
A
α
D
H
V
Unit (inch)
A=C/cos
α
B=3.7H / 25.4
C(XGA:tele)=(2.41 x H)-2.0 or C(XGA:wide) x 1.2
C(XGA:wide)=(2.0 x H)-2.0
C(SVGA:tele)=(2.43 x H)-1.75 or C(SVGA:wide) x 1.2
C(SVGA:wide)=(2.0 x H)-1.9
D=E/2
E=H/4 x 3
a=H/4 x 5
Unit (mm), H= inch
A=C/cos
α
B=3.7H
C(XGA:tele)={(2.41 x H)-2.0} x 25.4 or C(XGA:wide) x 1.2
C(XGA:wide)={(2.0 x H)-2.0} x 25.4
C(SVGA:tele)={(2.43 x H)-1.75} x 25.4 or C(SVGA:wide) x 1.2
C(SVGA:wide)={(2.0 x H)-1.9} x 25.4
D=E/2
E=H/4 x 3
a=H/4 x 5
Screen (inch)
Screen bottom
Screen center
Projector base
Screen
A: Distance between lens center and screen center
B: Vertical distance between lens center and screen bottom
(screen top for ceiling mount)
C: Horizontal throw distance between screen surface and pro-
jector lens
D: Vertical distance between screen center and screen bottom
(screen top for ceiling mount)
E: Screen Height
LT84: 1.87”(47.6mm)
LT140: 1.98”(50.4mm)
Installation Angle
The installation angle for the projector
must not /-15˚.
Deviating from this angle could degrade
the performance of the projector and may
cause reliability problems.
Distance Chart
Screen Size (inch)
Projection Distance
V. Distance between Lens Center and Screen Bottom
a
H
E
C(mm)
C(inch)
C(mm)
C(inch)
B(mm)
B(inch)
B(mm)
B(inch)
Screen size (Diagonal)
Screen Width
Height of screen
WIDE
TELE
WIDE
TELE
25
20
15
–
–
1190
46.9
–
–
74
2.9
40
32
24
1600
63.0
1930
76.0
117
4.6
117
4.6
60
48
36
2420
95.3
2910
114.6
176
6.9
176
6.9
80
64
48
3240
127.6
3900
153.5
235
9.3
235
9.3
100
80
60
4060
159.8
4890
192.5
294
11.6
294
11.6
120
96
72
4880
192.1
5870
231.1
352
13.9
352
13.9
150
120
90
6110
240.6
7350
289.4
440
17.3
440
17.3
200
160
120
8170
321.7
9820
386.6
587
23.1
587
23.1
240
192
144
9820
386.6
11790
464.2
705
27.8
705
27.8
300
240
180
12280
483.5
–
–
881
34.7
881
34.7
Screen Size (inch)
Projection Distance
V. Distance between Lens Center and Screen Bottom
a
H
E
C(mm)
C(inch)
C(mm)
C(inch)
B(mm)
B(inch)
B(mm)
B(inch)
Screen size (Diagonal)
Screen Width
Height of screen
WIDE
TELE
WIDE
TELE
25
20
15
–
–
1170
46.1
–
–
74
2.9
40
32
24
1580
62.2
1910
75.2
119
4.7
119
4.7
60
48
36
2400
94.5
2890
113.8
178
7.0
178
7.0
80
64
48
3220
126.8
3870
152.4
237
9.3
237
9.3
100
80
60
4030
158.7
4850
190.9
297
11.7
297
11.7
120
96
72
4850
190.9
5830
229.5
356
14.0
356
14.0
150
120
90
6080
239.4
7300
287.4
445
17.5
445
17.5
200
160
120
8120
319.7
9750
383.9
593
23.3
593
23.3
240
192
144
9750
383.9
11710
461.0
712
28.0
712
28.0
300
240
180
12200
480.3
–
–
890
35.0
890
35.0
S-VGA (LT84)
XGA (LT140)
NOTE: Distances may vary +/–5%.
