INSTALLATION & SETUP
Throw Distance
The throw distance (projector-to-screen distance) must be determined for every new
installation. Throw distance, the distance between the projector's center lens and the
center of the screen, is based on screen size. As screen size increases, the distance
between the projector and the screen increases. Make sure that the room can
accommodate the required position of the projector for the chosen screen size.
Once your screen size is known you can determine the required throw distance for your
projector model and lens by using the formulas in Appendix G and tables
in Appendix F.
Notes: 1) Calculated values are for reference only. It is good practice to
simulate the
setup to determine the necessary throw distance. 2) Display size is
affected by input
signal characteristics. Once the projector is set, use the Size
function to fine
tune display
size.
Throw distance and projection angle:
Keep in mind that the ability to properly focus all
areas of the image is limited if a significantly tilted projector is too close to the screen.
Lighting
>
Proper lighting is another important factor when designing a projection room.
Visiting a movie theatre can give you an idea of what makes a good projection
environment. A1l walls, floors and furnishings are dull colored and non-reflectively
finished. Every effort should be made to create the best environment for your system.
When designing a projection room, try to avoid white, reflective ceilings and non-
directional lighting such as fluorescent lights. The white ceiling spreads the light, which
makes the room appear brighter. You want to keep the lighting and reflections to a
minimum. If it is not possible to keep fluorescent lights off, consider using parabolic
reflectors (''egg crates'') to direct light down to the floor and away from the ceiling. Spot
lighting (incandescent) is a better way to obtain illumination. Installing light dimmers or
rheostats allows you to control your lighting environment.
Outside windows are undesirable in any projection environment. A small crack between
curtains on a sunny day can severely wash-out an image. Make sure that curtains are
opaque and fit snugly. Some curtains can provide up to 100 percent blockage of outside
light. Pay close attention to the curtain material facing inside the room. It should have a
matte finish.
Even with no external light at all, reflections from room surfaces can degrade the image.
Light from the screen should be absorbed by surfaces so that it will not be reflected back
to the screen. Keep reflective surfaces to a minimum.
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Summary of Contents for Model 8
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Page 44: ...INSTALLATION SETUP Figure 2 29 ACON Installation Examples 2 38 ...
Page 104: ...Physical Dimensions 5 5 ...
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Page 113: ...A p p e n d i x B B 1 ...
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