JVC L20U DLA-L20U User instruction manual (2.6MB) - Page 17

Projection Distance and Screen Size

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Installing the Projector (Cont.) Projection Distance and Screen Size q The projection lens used in this projector is a long focal-distance zoom lens (1.9 x zoom lens for 2.9:1 to 5.5:1) with manual shift function. q The range of projection distances that can be focused is approx. 14.83 ft (approx. 4.52 m) to approx. 98 ft (approx. 29.87 m) when the aspect ratio of the screen is 4:3. Set this projector within this range. Refer to "Relationship between Projection Distances and Projection Screen Sizes" (on pages 16 and 71). q With this projector, the projection screen can be shifted up and down in position within the range of approx. 30% to 55%. The amount of shift shown in the illustration is 50% shifting. See page 17 for "Setting the Amount of Lens Shifting". Screen s Change of projection screen according to aspect ratio Screen with 4 : 3 aspect ratio 90° 90° When the amount of shift is selected to be 50%, set the screen so that its bottom edge is the same height as the center line of the lens. 90° Center line of the lens Screen with 16 : 9 aspect ratio s Relationship between Projection Distances and Projection Screen Sizes Projection screen size (Diagonal length) Approximate projection distance For 4:3 aspect-ratio screens For 16:9 aspect-ratio screens unit: inch (cm) 40 (approx. 101.6) 60 (approx. 152.4) 70 (approx. 177.8) 80 (approx. 203.2) 100 (approx. 254.0) 150 (approx. 381.0) 200 (approx. 508.0) 240 (approx. 609.6) 250 (approx. 635.0) 270 (approx. 685.8) 280 (approx. 711.2) 350 (approx. 889.0) 470 (approx. 1193.8) 510 (approx. 1295.4) Wide end unit: ft (m) 15.55 ( 4.74) 19.36 ( 5.90) 28.87 ( 8.80) 38.39 (11.70) 45.97 (14.01) 47.87 (14.59) 51.67 (15.75) 53.58 (16.33) 66.90 (20.39) 89.70 (27.34) 97.31 (29.66) Tele end unit: ft (m) 14.83 ( 4.52) 22.05 ( 6.72) 25.66 ( 7.82) 29.30 ( 8.93) 36.52 (11.13) 54.59 (16.64) 72.67 (22.15) 87.14 (26.56) 90.78 (27.67) 98.00 (29.87 Wide end unit: ft (m) 14.83 ( 4.52) 16.93 ( 5.16) 21.06 ( 6.42) 31.43 ( 9.58) 41.77 (12.73) 50.07 (15.26) 52.13 (15.89) 56.27 (17.15) 58.33 (17.78) 72.84 (22.20) 97.71 (29.78 Tele end unit: ft (m) 16.11 ( 4.91) 23.98 ( 7.31) 27.92 ( 8.51) 31.86 ( 9.71) 39.76 (12.12) 59.45 (18.12) 79.17 (24.13) 94.92 (28.93 *This list is extracted from "Relationship between Projection Distances and Projection Screen Size" on page 71. The projection screen sizes and projection distances are only for a guide. Use them as reference when setting the projector. 16

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16
Installing the Projector (Cont.)
Projection Distance and Screen Size
●
The projection lens used in this projector is a long focal-distance zoom lens (1.9 x zoom lens for 2.9:1 to 5.5:1) with
manual shift function.
●
The range of projection distances that can be focused is approx. 14.83 ft (approx. 4.52 m) to approx. 98 ft (approx.
29.87 m) when the aspect ratio of the screen is 4:3. Set this projector within this range. Refer to “Relationship
between Projection Distances and Projection Screen Sizes” (on pages 16 and 71).
●
With this projector, the projection screen can be shifted up and down in position within the range of approx. 30% to
55%. The amount of shift shown in the illustration is 50% shifting. See page 17 for “Setting the Amount of Lens
Shifting”.
Screen
When the amount of shift is
selected to be 50%, set the screen
so that its bottom edge is the
same height as the center line of
the lens.
Screen with 4 : 3 aspect ratio
■
Change of projection screen
according to aspect ratio
Screen with 16 : 9 aspect ratio
Center line of the lens
90°
90°
90°
■
Relationship between Projection Distances and Projection Screen Sizes
*This list is extracted from “Relationship between Projection Distances and Projection Screen Size
”
on page 71. The projection
screen sizes and projection distances are only for a guide. Use them as reference when setting the projector.
Projection screen size
Approximate projection distance
(Diagonal length)
For 4:3 aspect-ratio screens
For 16:9 aspect-ratio screens
Wide end
Tele end
Wide end
Tele end
unit: inch (cm)
unit: ft (m)
unit: ft (m)
unit: ft (m)
unit: ft (m)
40
(approx.
101.6)
---------
---------
14.83
(
4.52)
---------
---------
16.11
(
4.91)
60
(approx.
152.4)
---------
---------
22.05
(
6.72)
---------
---------
23.98
(
7.31)
70
(approx.
177.8)
---------
---------
25.66
(
7.82)
14.83
(
4.52)
27.92
(
8.51)
80
(approx.
203.2)
15.55
(
4.74)
29.30
(
8.93)
16.93
(
5.16)
31.86
(
9.71)
100
(approx.
254.0)
19.36
(
5.90)
36.52
(11.13)
21.06
(
6.42)
39.76
(12.12)
150
(approx.
381.0)
28.87
(
8.80)
54.59
(16.64)
31.43
(
9.58)
59.45
(18.12)
200
(approx.
508.0)
38.39
(11.70)
72.67
(22.15)
41.77
(12.73)
79.17
(24.13)
240
(approx.
609.6)
45.97
(14.01)
87.14
(26.56)
50.07
(15.26)
94.92
(28.93)
250
(approx.
635.0)
47.87
(14.59)
90.78
(27.67)
52.13
(15.89)
---------
---------
270
(approx.
685.8)
51.67
(15.75)
98.00
(29.87)
56.27
(17.15)
---------
---------
280
(approx.
711.2)
53.58
(16.33)
---------
---------
58.33
(17.78)
---------
---------
350
(approx.
889.0)
66.90
(20.39)
---------
---------
72.84
(22.20)
---------
---------
470
(approx. 1193.8)
89.70
(27.34)
---------
---------
97.71
(29.78)
---------
---------
510
(approx. 1295.4)
97.31
(29.66)
---------
---------
---------
---------
---------
---------