Adjust the picture size and focus
Refer to “Image Projection” in the projector owner’s manual for information on adjusting the
focus and picture size.
Handling Precautions
●Do not disassemble this lens.
Please refer to your authorized dealer for any maintenance and inspections requiring an open
cabinet.
●Touching any other internal part could cause personal injury or machine malfunction.
●Do not touch any glass or protruding part of the lens. This may cause personal injury
and reduced performance of the projector.
●When maintaining the projector the following points should be noted.
•When cleaning the lens be sure to use a commercial air blower or lens cleaning paper (used
in cleaning glasses and cameras).
•The surface of the lens is very delicate. Do not allow hard objects to bump or rub against it.
Supplied Accessories
•Lens cap (front) ×1 •Lens cap (rear) ×1
•Installation manual •Owner’s manual (this manual)
Specifications
•Allow a margin of error in the value in the diagrams above.
•When the distance from the lens center to the bottom of the image [H] is a negative number,
this indicates that the bottom of the image is below the lens center.
Picture size and projection distance chart
Side View Top View
Upper lens shift
position
(Desktop setup)
Lower lens shift
position
(High mount setup)
Rightmost lens
shift position
Leftmost lens
shift position
Lens center
Lens center
H1
H2
Screen
Screen
WCenter of screen
Lens center
Lens center
Center of
screen
90°
90°
90°
90°
L
Model
Picture size (diagonal)
Focal length
F no.
Throw ratio
Weight
Depth of projector with the lens attached
AH-55801
60'' to 230'' (16:10)
62.1 mm (2 29/64'') – 97.8 mm (3 55/64'')
2.5
1:4.5 – 7.0
Approx. 1,500 g (3.3 lbs.)
645 mm (25 13/32'')
16:10 Signal Input (Normal Mode)
4:3 Signal Input (Normal Mode)
The formula for picture size
and projection distance
χ: Picture size (diag.) (in/cm)
[m/cm]
L1 (m) = 0.09821χ
L2 (m) = 0.1527χ
H1 (cm) = –1.56815χ
H2 (cm) = 0.2221χ
W (cm) = ±0.75379χ
[Feet/inches]
L1 (ft) = 0.09821χ/ 0.3048
L2 (ft) = 0.1527χ/ 0.3048
H1 (in) = –1.56815χ/ 2.54
H2 (in) = 0.2221χ/ 2.54
W (in) = ±0.75379χ/ 2.54
The formula for picture size
and projection distance
χ: Picture size (diag.) (in/cm)
[m/cm]
L1 (m) = 0.11118χ
L2 (m) = 0.17287χ
H1 (cm) = –1.77527χ
H2 (cm) = 0.25143χ
W (cm) = ±0.85344χ
[Feet/inches]
L1 (ft) = 0.11118χ/ 0.3048
L2 (ft) = 0.17287χ/ 0.3048
H1 (in) = –1.77527χ/ 2.54
H2 (in) = 0.25143χ/ 2.54
W (in) = ±0.85344χ/ 2.54
Picture (Screen) size Projection distance [L] Distance from the lens center to
the bottom of the image [H]
Distance from the lens
center to the center of
the image [W]
Diag. [χ]Width Height Minimum [L1] Maximum [L2] Lower [H1] Upper [H2]
230'' (584 cm)
200'' (508 cm)
150'' (381 cm)
120'' (305 cm)
100'' (254 cm)
80'' (203 cm)
60'' (152 cm)
495 cm (195'')
431 cm (170'')
323 cm (127'')
258 cm (102'')
215 cm (85'')
172 cm (68'')
129 cm (51'')
310 cm (122'')
269 cm (106'')
202 cm (79'')
162 cm (64'')
135 cm (53'')
108 cm (42'')
81 cm (32'')
22.6 m (74' 1")
19.6 m (64' 5")
14.7 m (48' 4")
11.8 m (38' 8")
9.8 m (32' 3")
7.9 m (25' 9")
5.9 m (19' 4")
–360.7 cm (–142")
–313.6 cm (–123
15
/
32
")
–235.2 cm (–92
39
/
64
")
–188.2 cm (–74
5
/
64
")
–156.8 cm (–61
47
/
64
")
–125.5 cm (–49
25
/
64
")
–94.1 cm (–37
3
/
64
")
51.1 cm (20 7/64")
44.4 cm (17 31/64")
33.3 cm (13 7/64")
26.7 cm (10 1/2")
22.2 cm (8 3/4")
17.8 cm (7")
13.3 cm (5 1/4")
±173.4 cm (68 1/4")
±150.8 cm (59 23/64")
±113.1 cm (44 33/64")
±90.5 cm (35 39/64")
±75.4 cm (29 43/64")
±60.3 cm (23 47/64")
±45.2 cm (17 13/16")
35.1 m (115' 3")
30.5 m (100' 2")
22.9 m (75' 2")
18.3 m (60' 1")
15.3 m (50' 1")
12.2 m (40' 1")
9.2 m (30' 1")
Picture (Screen) size Projection distance [L] Distance from the lens center to
the bottom of the image [H]
Distance from the lens
center to the center of
the image [W]
Diag. [χ]Width Height Minimum [L1] Maximum [L2] Lower [H1] Upper [H2]
200'' (508 cm)
150'' (381 cm)
120'' (305 cm)
100'' (254 cm)
80'' (203 cm)
70'' (178 cm)
60'' (152 cm)
406 cm (160'')
305 cm (120'')
244 cm (96'')
203 cm (80'')
163 cm (64'')
142 cm (56'')
122 cm (48'')
305 cm (120'')
229 cm (90'')
183 cm (72'')
152 cm (60'')
122 cm (48'')
107 cm (42'')
91 cm (36'')
22.2 m (72' 11")
16.7 m (54' 9")
13.3 m (43' 9")
11.1 m (36' 6")
8.9 m (29' 2")
7.8 m (25' 6")
6.7 m (21' 11")
–355.1 cm (–139
25
/
32
")
–266.3 cm (–104
27
/
32
")
–213.0 cm (–83
7
/
8
")
–177.5 cm (–69
57
/
64
")
–142.0 cm (–55
29
/
32
")
–124.3 cm (–48
59
/
64
")
–106.5 cm (–41
15
/
16
")
50.3 cm (19 51/64")
37.7 cm (14 27/32")
30.2 cm (11 7/8")
25.1 cm (9 29/32")
20.1 cm (7 59/64")
17.6 cm (6 59/64")
15.1 cm (5 15/16")
±170.7 cm (67 13/64")
±128.0 cm (50 13/32")
±102.4 cm (40 5/16")
±85.3 cm (33 19/32")
±68.3 cm (26 7/8")
±59.7 cm (23 33/64")
±51.2 cm (20 5/32")
34.6 m (113' 5")
25.9 m (85' 1")
20.7 m (68' 1")
17.3 m (56' 9")
13.8 m (45' 4")
12.1 m (39' 8")
10.4 m (34' 0")
AH55801_OptionLens_E.p65 08.5.26, 4:02 PM2-3
