Sony SRX-T420 Installation Manual page 34

The formula for calculating the projection distance from the screen diagonal length (D, unit: inch) is as
follows:
Type of lens Projection distance
calculation formula when
inputting a 4K x 2K signal
L (min)
1.31 x D
LKRL-Z115
1.49 x D
LKRL-Z117
1.57 x D
LKRL-Z119
1.94 x D
LKRL-Z122
3.31 x D
LKRL-Z140
0.942 x D
LKRL-Z111C
1.2 x D
LKRL-Z114C
1.34 x D
LKRL-Z116C
0.793 x D
LKRL-90
The projection distance (L) that is decided by the screen width (W) is as shown below.
For the projection distance charts of the optional lenses not mentioned below, refer to the mounting
instructions supplied with each lens.
Using the LKRL-Z115 projection lens
When projecting a 4096-pixel (4K x 2K) image at the maximum horizontal picture element
W 4500 5000
(177 1/5) (196 6/7) (236 2/9) (275 3/5) (315)
L (min) 6554 7295
(258) (287 2/9) (345 3/5) (404)
L (max) 8056 8964
(317 1/6) (353)
H1 2373 2637
a)
(93 3/7) (103 4/5) (124 4/7) (145 1/3) (166)
H2 1883 2092
b)
(74 1/8) (82 3/8)
mm:
L (min) = (W _ 79.675) / 0.67446
H1 = W x 0.52730
inch:
L (min) = (W _ 3.1368) / 0.67446
H1 = W x 0.52730
a) Screen height when projecting a 4096 x 2160-pixel (4K single screen) image on the screen.
b) Screen height when projecting a 4096 x 1714-pixel (aspect ratio 2.39:1) image on the screen.
1-28
Projection distance
calculation formula when
inputting a 16:9 signal
L (max) L (min)
1.59 x D 1.37 x D
2.1 x D 1.57 x D
2.59 x D 1.65 x D
3.53 x D 2.03 x D
6.25 x D 3.48 x D
1.51 x D 0.99 x D
1.75 x D 1.26 x D
2.03 x D 1.41 x D
0.834 x D
6000 7000 8000
8778 10261 11743
(462 1/3) (520 5/7) (579)
10780 12596 14412
(424 2/5) (496) (567 2/5) (638 8/9) (710 2/5) (853 2/5) (996 3/8) (1139 3/8)
3164 3691 4219
2510 2929 3347
(98 5/6) (115 1/3) (131 7/9) (148 1/4) (164 3/4) (197 2/3) (230 5/8) (263 4/7)
L (max) = (W _ 63.762) / 0.55067
H2 = W x 0.41840
L (max) = (W _ 2.5103) / 0.55067
H2 = W x 0.41840
Projection distance
calculation formula when
inputting a 4:3 signal
L (max) L (min)
1.67 x D 1.68 x D
2.21 x D 1.93 x D
2.72 x D 2.03 x D
3.71 x D 2.5 x D
6.57 x D 4.27 x D
1.59 x D 1.22 x D
1.84 x D 1.54 x D
2.14 x D 1.72 x D
1.02 x D
9000 10000 12000
(354 1/3) (393 5/7) (472 4/9) (551 1/6) (630)
13226 14709 17674
(695 5/6) (812 4/7) (929 1/3)
16228 18044 21676
4746 5273 6328
(186 6/7) (207 5/8) (249 1/7) (290 2/3) (332 1/5)
3766 4184 5021
L (max)
2.05 x D
2.7 x D
3.33 x D
4.54 x D
8.03 x D
1.94 x D
2.26 x D
2.62 x D
Unit: mm (inches)
14000 16000
20639 23605
25308 28940
7383 8438
5858 6695
SRX-T420