Projection Distance And Size - Ricoh PJ X3131 Mode D'emploi

Placement (Continued)

Projection Distance and Size

Use the figures, tables, and formulas below to determine the projection size and projection distance.
(Projection sizes are approximate values for full-size picture with no keystone adjustment.)
PJ X3131
Screen
As seen from above
90°
As seen from the side
Lens center
90°
a
a is the distance (m, feet) between
the lens and the screen, and
corresponds to a range of 0.89 m
(2.92 ft.) to 10.93 m (35.86 ft.). H is
the height from the image bottom to
the center of the lens.
PJ WX3131
Screen
As seen from above
90°
As seen from the side
Lens center
90°
a
a is the distance (m, feet) between
the lens and the screen, and
corresponds to a range of 0.94 m
(3.08 ft.) to11.58 m (37.99 ft.).
The lens center is in the same level
with an image bottom.
Projection size (inches) - 0.795
a (min length) =
Projection size (inches) - 0.673
a (max length) =
Projection distance a
Projection
min length
size
(zooming max)
30 inches 0.89 m (2.92 ft.)
40 inches 1.19 m (3.90 ft.)
50 inches 1.50 m (4.92 ft.)
60 inches 1.80 m (5.91 ft.)
70 inches 2.10 m (6.89 ft.)
80 inches 2.41 m (7.91 ft.)
90 inches 2.71 m (8.89 ft.)
100 inches 3.02 m (9.91 ft.)
120 inches 3.63 m (11.91 ft.)
150 inches 4.54 m (14.90 ft.)
200 inches 6.06 m (19.88 ft.)
250 inches 7.58 m (24.87 ft.)
300 inches 9.10 m (29.86 ft.) 10.93 m (35.86 ft.) 65.30 cm (2.14 ft.)
Projection size (inches) - 0.758
a (min length) =
Projection size (inches) - 0.643
a (max length) =
Projection distance a
Projection
min length
size
(zooming max)
30 inches 0.94 m (3.08 ft.)
40 inches 1.27 m (4.17 ft.)
50 inches 1.59 m (5.22 ft.)
60 inches 1.91 m (6.27 ft.)
70 inches 2.23 m (7.32 ft.)
80 inches 2.55 m (8.37 ft.)
90 inches 2.88 m (9.45 ft.)
100 inches 3.20 m (10.50 ft.)
120 inches 3.84 m (12.60 ft.)
150 inches 4.81 m (15.78 ft.)
200 inches 6.42 m (21.06 ft.)
250 inches 8.03 m (26.35 ft.)
300 inches 9.65 m (31.66 ft.) 11.58 m (37.99 ft.)
18
32.885
27.397
max length
(zooming min)
1.07 m (3.51 ft.) 6.50 cm (0.21 ft.)
1.44 m (4.72 ft.) 8.70 cm (0.29 ft.)
1.80 m (5.91 ft.) 10.90 cm (0.36 ft.)
2.17 m (7.12 ft.) 13.10 cm (0.43 ft.)
2.53 m (8.30 ft.) 15.20 cm (0.50 ft.)
2.90 m (9.51 ft.) 17.40 cm (0.57 ft.)
3.26 m (10.70 ft.) 19.60 cm (0.64 ft.)
3.63 m (11.91 ft.) 21.80 cm (0.72 ft.)
4.36 m (14.30 ft.) 26.10 cm (0.86 ft.)
5.45 m (17.88 ft.) 32.70 cm (1.07 ft.)
7.28 m (23.88 ft.) 43.50 cm (1.43 ft.)
9.10 m (29.86 ft.) 54.40 cm (1.78 ft.)
31.022
25.845
max length
(zooming min)
1.14 m (3.74 ft.)
1.52 m (4.99 ft.)
1.91 m (6.27 ft.)
2.30 m (7.55 ft.)
2.68 m (8.79 ft.)
3.07 m (10.07 ft.)
3.46 m (11.35 ft.)
3.84 m (12.60 ft.)
4.62 m (15.16 ft.)
5.78 m (18.96 ft.)
7.71 m (25.30 ft.)
9.65 m (31.66 ft.)
Height (H)