Projection Distance And Screen Size - JVC D-ILA DLA-QX1G Manuel D'instructions

Installing the Projector (Cont.)

Projection Distance and Screen Size

The range of projection distances that can be focused depends on the lens unit (not supplied) to be used. When the aspect ratio
of the screen is 4:3, the range is as follows and you need to install the projector within this range.
Lens type
GL-MQ1010G
GL-MQ1015SG
GL-MQ1020ZG
GL-MQ1023SZG
The value for projection distance is a guide (reference). The projected image size may vary depending on the manufactur-
ing tolerance of the projection lens.
Screen with 4 : 3 aspect ratio
For detailed relation between projection distances and projection screen sizes, refer to Appendix. The relation for both 4:3 and
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16:9 are listed there.
When adjusting the screen size, use a 4:3 aspect-ration picture. (A 16:9 aspect-ration picture is projected, based on the width
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of a 4:3 aspect-ratio picture.)
The diagonal length of a 16:9 aspect-ratio screen is about 91.8% that of a 4:3 aspect-ratio screen. This value is only a guide
•
(reference).
If the keystone is adjusted, the projected screen becomes smaller.
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I Optional Lenses
This projector does not include a lens. You can select one of the optional lenses to adjust the projection distance. Please ask
your dealer to buy and install the lens.
Lens model Function
GL-MQ1010G Powered focus for rear projection, short focal length lens (subject ratio 1:1), 0% influence.
GL-MQ1015SG Powered focus, short focal length lens (subject ratio 1.5:1), manual vertical shift function pro-
vided, 0% to ±50% influence.
GL-MQ1020ZG Powered zoom/powered focus, long focal length lens (subject ratio 2.1:1 to 4.9:1), 0% influence.
GL-MQ1023SZG Powered zoom/powered focus, long focal length lens (subject ratio 3:1 to 7:1), manual vertical
shift function provided, 0% to ±50% influence.
Approximate projection distance
3.9 ft (1.2 m) to 25.9 ft (7.9 m)
5.6 ft (1.7 m) to 40.3 ft (12.3 m)
26.2 ft (8.0 m) to 280.3 ft (85.5 m)
28.2 ft (8.6 m) to 276.1 ft (84.2 m)
Change of projection screen according to
aspect ratio
Screen with 16 : 9 aspect ratio
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