background image

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

Note

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

W

Center of screen

Lens center

Lens center

Center of 
screen

90

°

90

°

90

°

90

°

L

140'' (356 cm)

120'' (305 cm)

100'' (254 cm)

80'' (203 cm)

302 cm (119'')

258 cm (102'')

215 cm (85'')

172 cm (68'')

188 cm (74'')

162 cm (64'')

135 cm (53'')

108 cm (42'')

2.4 m (8' 0")

2.1 m (6' 10")

1.7 m (5' 9")

1.4 m (4' 7")

–135.7 cm (–53 

27

/

64

")

–116.3 cm (–45 

25

/

32

")

–96.9 cm (–38 

5

/

32

")

–77.5 cm (–30 

17

/

32

")

–52.8 cm (–20 

25

/

32

")

–45.2 cm (–17 

13

/

16

")

–37.7 cm (–14 

27

/

32

")

–30.2 cm (–11 

7

/

8

")

±

33.2 cm (13 

1

/

16

")

±

28.4 cm (11 

3

/

16

")

±

23.7 cm (9 

21

/

64

")

±

19.0 cm (7 

15

/

32

")

Picture (Screen) size

Projection distance

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

[L]

Lower [H1]

Upper [H2]

120'' (305 cm)

100'' (254 cm)

80'' (203 cm)

70'' (178 cm)

244 cm (96'')

203 cm (80'')

163 cm (64'')

142 cm (56'')

183 cm (72'')

152 cm (60'')

122 cm (48'')

107 cm (42'')

2.4 m (7' 9")

2.0 m (6' 6")

1.6 m (5' 2")

1.4 m (4' 6")

–131.7 cm (–51 

53

/

64

")

–109.7 cm (–43 

3

/

16

")

–87.8 cm (–34 

9

/

16

")

–76.8 cm (–30 

15

/

64

")

–51.2 cm (–20 

5

/

32

")

–42.7 cm (–16 

51

/

64

")

–34.1 cm (–13 

7

/

16

")

–29.9 cm (–11 

49

/

64

")

±

32.2 cm (12 

43

/

64

")

±

26.8 cm (10 

9

/

16

")

±

21.5 cm (8 

29

/

64

")

±

18.8 cm (7 

25

/

64

")

Picture (Screen) size

Projection distance

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

[L]

Lower [H1]

Upper [H2]

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]

L (m) = 0.01744

χ

H1 (cm) = –0.96916

χ

H2 (cm) = –0.37689

χ

W (cm) = 

±

0.23691

χ

[Feet/inches]

L (ft) = 0.01744

χ

 / 0.3048

H1 (in) = –0.96916

χ

 / 2.54

H2 (in) = –0.37689

χ

 / 2.54

W (in) = 

±

0.23691

χ

 / 2.54

The formula for picture size 
and projection distance

χ

: Picture size (diag.) (in/cm)

[m/cm]

L (m) = 0.01974

χ

H1 (cm) = –1.09716

χ

H2 (cm) = –0.42667

χ

W (cm) = 

±

0.26823

χ

[Feet/inches]

L (ft) = 0.01974

χ

 / 0.3048

H1 (in) = –1.09716

χ

 / 2.54

H2 (in) = –0.42667

χ

 / 2.54

W (in) = 

±

0.26823

χ

 / 2.54

Model
Picture size (diagonal)
Focal length
F no.
Throw ratio
Weight
Depth of projector with the lens attached

AH-55201
80'' to 140'' (16:10)
11.6 mm (

15

/

32

'')

2.5
1:0.8
Approx. 2,500 g (5.5 lbs.)
711 mm (28'')

AH55201_OptionLens_E.p65

08.5.26, 15:26

2-3

Reviews: