Madrigal Imaging MP-8, MP-9 manual Poor Screen Placement

INSTALLATION & SETUP

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. All 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. Spot lighting is a better way to obtain illumination. Installing light dimmers 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 pro- vide 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.

To minimize the effects caused by unwanted light from door and aisle ways, carefully choose the position of your projector and screen. Figure 2-3 shows an installation where poor screen placement has allowed too much unwanted light to enter the screen. In Figure 2-4, the screen and the projector are positioned so that unwanted light is minimized.

door

door

unwanted light

Prime Audience

Area

unwanted	light
	light
unwanted

window

Figure 2-3.Poor Screen Placement

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