Positioning The Projector - InFocus IN1112A User Manual

Positioning the projector

To determine where to position the projector, consider the size and shape of your
screen, the location of your power outlets, and the distance between the projector
and the rest of your equipment. Here are some general guidelines:
• Position the projector on a flat surface at a right angle to the screen. The
projector must be at least 4.9 feet (1.5m) from the projection screen.
• Position the projector within 10 feet (3m) of your power source and within 6
feet (1.8m) of your video device (unless you purchase extension cables). To
ensure adequate cable access, do not place the projector within 6 inches (.15m)
of a wall or other object.
• Position the projector the desired distance from the screen. The distance from
the lens of the projector to the screen, the zoom setting, and the video format
determine the size of the projected image.
• The image exits the projector at a given angle. IN1110a image offset is 115%;
IN1112a image offset is 112.4%. This means that if you have an image 10'
high, the bottom of the image will be 1.5' (IN1110a) and 1.24' (IN1112a) above
the center of the lens.
10 ft high
(IN1112a)
image
Projection angle
bottom of image
1.24 ft above center
of lens
lens center
10 ft high
(IN1110a)
image
Projection angle
bottom of image 1.5
ft above center of
lens
lens center
Table 1: (IN1110a)
Range of distance to the screen for a given screen size
Distance to screen
Maximum
Diagonal Screen distance
Size (inches/m) (feet/m)
60/1.5 8'7"/2.6
80/2.0 11'6"/3.5
90/2.3 12'11"/3.9
150/3.8 21'6"/6.6
Table 2: (IN1112a)
Range of distance to the screen for a given screen size
Distance to screen
Maximum
Diagonal Screen distance
Size (inches/m) (feet/m)
60/1.5 7'2"/2.2
80/2.0 9'7"/2.9
90/2.3 10'10"/3.3
150/3.8 18'0"/5.5
6
Minimum
Distance
(feet/m)
7'10"/2.4
10'5"/3.2
11'8"/3.6
19'6"/5.9
Minimum
Distance
(feet/m)
6'7"/2.0
8'9"/2.7
9'10"/3.0
16'5"/5.0