Sharp DLP data video projector XG-C68X User Manual

H

Screen

L:Projection distance

Lens center

Base line:
Horizontal line passing through
the lens center

Picture (Screen) size

Projection distance [L]

Distance from the lens center

Diag. [χ]

Width

Height

Maximum [L1]

Minimum [L2]

 to the bottom of the image [H]

300" (762 cm)

261" (663 cm)

147" (373 cm)

50' 6" (15.4 m)

39' 3" (12.0 m)

–4

15 / 16"

(–12.6 cm)

250" (635 cm)

218" (554 cm)

123" (312 cm)

42'

(12.8 m)

32' 8" (10.0 m)

–4

1 / 8"

(–10.5 cm)

225" (572 cm)

196" (498 cm)

110" (279 cm)

37'10" (11.5 m)

29' 5" (9.0 m)

–3

3 / 4"

(–9.5 cm)

200" (508 cm) 174" (442 cm)

98" (249 cm)

33' 7" (10.2 m)

26' 1" (8.0 m)

–3

5 / 16"

(–8.4 cm)

150" (381 cm) 131" (333 cm)

74" (188 cm)

25' 2"

(7.7 m)

19' 7" (6.0 m)

–2

1 / 2"

(–6.3 cm)

133" (338 cm)

116" (295 cm)

65" (165 cm)

22' 3"

(6.8 m)

17' 4" (5.3 m)

–2

3 / 16"

(–5.6 cm)

106" (269 cm)

92" (234 cm)

52" (132 cm)

17' 9"

(5.4 m)

13' 9" (4.2 m)

–1

3 / 4"

(–4.5 cm)

100" (254 cm) 87" (221 cm)

49" (124 cm)

16' 9"

(5.1 m)

13'

(4.0 m)

–1

5 / 8"

(–4.2 cm)

92" (234 cm)

80" (203 cm)

45" (114 cm)

15' 5"

(4.7 m)

11' 11" (3.6 m)

–1

9 / 16"

(–3.9 cm)

84" (213 cm)

73" (185 cm)

41" (104 cm)

14'

(4.3 m)

10' 11" (3.3 m)

–1

3 / 8"

(–3.5 cm)

72" (183 cm)

63" (160 cm)

35" (89 cm)

12'

(3.7 m)

9' 4" (2.8 m)

–1

3 / 16"

(–3.0 cm)

60" (152 cm)

52" (132 cm)

29" (74 cm)

10'

(3.0 m)

7' 9" (2.4 m)

–

31 / 32"

(–2.5 cm)

40" (102 cm)

35" (89 cm)

20" (51 cm)

6' 7"

(2.0 m)

5' 2" (1.6 m)

–

11 / 16"

(–1.7 cm)

Note

• There is an error of ± 3% in the formula above.
• Values with a minus (–) sign indicate the distance of the lens center below the bottom of the image.

The formula for picture size and
projection distance

χ: Picture size (diag.) (in)

[Feet, inches]
L1 (ft) = (0.0472χ – 0.0517) / 0.3048
L2 (ft) = (0.0367χ – 0.0529) / 0.3048
H (in) = (0.1499χ – 0.0064) / 2.54

[m, cm]
L1 (m) = 0.0472χ – 0.0517
L2 (m) = 0.0367χ – 0.0529
H (cm) = 0.1499χ – 0.0064

Picture (Screen) size

Projection distance [L]

Distance from the lens center

Diag. [χ]

Width

Height

Maximum [L1]

Minimum [L2]

to the bottom of the image [H]

300" (762 cm) 240" (610 cm)

180"(457 cm)

46' 4" (14.1 m)

36'

(11.0 m)

17

11 / 16"

(45.0 cm)

250" (635 cm) 200" (508 cm) 150" (381 cm)

38' 7" (11.8 m)

30'

(9.1 m)

14

3 / 4"

(37.5 cm)

200" (508 cm) 160" (406 cm)

120" (305 cm)

30'10"

(9.4 m)

24'

(7.3 m)

11

13 / 16"

(30.0 cm)

150" (381 cm) 120" (305 cm)

90" (229 cm)

23' 1"

(7.0 m)

17'11" (5.5 m)

8

7 / 8"

(22.5 cm)

100" (254 cm) 80" (203 cm)

60" (152 cm)

15' 4"

(4.7 m)

11'11" (3.6 m)

5

7 / 8"

(15.0 cm)

84" (213 cm)

67" (170 cm)

50" (127 cm)

12'11"

(3.9 m)

10'

(3.0 m)

4

15 / 16"

(12.6 cm)

72" (183 cm)

58" (147 cm)

43" (109 cm)

11'

(3.4 m)

8' 6" (2.6 m)

4

1 / 4"

(10.8 cm)

60" (152 cm)

48" (122 cm)

36" (91 cm)

9' 2"

(2.8 m)

7' 1" (2.2 m)

3

9 / 16"

(9.0 cm)

40" (102 cm)

32" (81 cm)

24" (61 cm)

6' 1"

(1.8 m)

4' 8" (1.4 m)

2

3 / 8"

(6.0 cm)

The formula for picture size and
projection distance

χ: Picture size (diag.) (in)

[Feet, inches]
L1 (ft) = (0.0514χ – 0.0516) / 0.3048
L2 (ft) = (0.04χ – 0.0523) / 0.3048
H (in) = (–0.0422χ + 0.0018) / 2.54

[m, cm]
L1 (m) = 0.0514χ – 0.0516
L2 (m) = 0.04χ – 0.0523
H (cm) = –0.0422χ + 0.0018