NEC Display Solutions of America, Inc.
PH2601QL & PH3501QL Installation Guide
Desktop and Ceiling Mount
Rev 1.0
www.necdisplay.com
PH2601QL/PH3501QL
Page 2 of 11
Formulas: 17:9 Aspect Ratio (4K = 4096x2160)
The Projection Formulas use the image width for calculation. Image width is the same for all aspect ratios, only vertical image size
varies. For proper projector placement, determine the image width for a desired screen size. Use the Screen Formulas below to
calculate all screen dimensions. Plug in the image width for “W” in the Projection Formulas.
Refer to the diagrams and charts for popular screen sizes on page 2 and 3:
Projection Formulas:
Definitions:
17:9 Screen Formulas
L2K-10F1:
C
(Wide) = 0.975W
– 3.795
W = Image Width
W = H x 17/9
L4K-11ZM:
C
(Wide) = 1.251W
– 4.331 ------
C
(Tele) = 1.737W
– 4.843
H = Image Height (size) H = W x 9/17
L4K-15ZM:
C
(Wide) = 1.537W
– 4.307 ------
C
(Tele) = 2.115W
– 5.906
C = Throw distance
Screen Diagonal = W x 19.231/17
L4K-20ZM:
C
(Wide) = 1.960W + 9.843 ------
C
(Tele) = 3.322W + 10.465
L2K-30ZM:
C
(Wide) = 2.735W + 8.744 ------
C
(Tele) = 3.955W + 11.760
L2K-43ZM1:
C(Wide) = 3.937W - 11.327 ------ C(Tele) = 5.554W
– 15.060
L2K-55ZM1:
C(Wide) = 5.028W - 12.866 ------ C(Tele) = 7.865W
– 16.996
Distance Chart for popular 17:9 Screens (4K = 4096x2160)
Diagonal Width(W) Height (H)
inches
inches
inches
110
97
51
86.7 -
N/A
116.7 - 163.3
144.5 - 198.8
199.5 - 332.0
256.0 - 371.03
369.7 - 522.49
473.8 - 744.22
131
115
61
104.0 -
N/A
139.9 - 195.4
172.9 - 237.9
235.8 - 393.4
306.5 - 444.11
442.5 - 625.11
566.7 - 889.55
161
142
75
128.7 -
N/A
172.9 - 241.2
213.4 - 293.7
287.5 - 481.1
378.7 -
548.5
546.4 - 771.72
699.4 - 1097.2
192
169
89
154.2 -
N/A
207.0 - 288.6
255.3 - 351.4
341.0 - 571.7
453.3 - 656.38
653.8 - 923.21
836.5 - 1311.7
226
199
105
182.1 -
N/A
244.4 - 340.6
301.3 - 414.7
399.6 - 671.0
535.1 -
774.7
771.5 - 1089.4
987.0 -
1547
259
228
121
209.3 -
N/A
280.8 - 391.0
346.0 - 476.1
456.5 - 767.5
614.5 - 889.53
885.9 - 1250.6
1132.9 - 1775.3
292
257
136
236.4 -
N/A
317.1 - 441.4
390.6 - 537.5
513.4 - 864.0
693.9 - 1004.4 1000.2 - 1411.9
1278.9 - 2003.7
324
285
151
262.8 -
N/A
352.3 - 490.3
433.9 - 597.0
568.6 - 957.5
770.9 - 1115.7 1111.0 - 1568.3
1420.5 - 2225.1
400
352
186
325.3 -
N/A
436.0 - 606.5
536.6 - 738.5
699.7 - 1179.6
953.8 - 1380.2 1374.3 - 1939.7
1756.7 - 2751.1
500
440
233
407.5 -
N/A
546.0 - 759.3
671.9 - 924.6
872.1 - 1471.9
1194.5 - 1728.2 1720.7 - 2428.3
2199.1 - 3443.1
Screen Size (17:9)
2.00-3.40:1
L2K-10F1
L4K-11ZM
L4K-15ZM
L4K-20ZM
2.70-3.90:1
inches
inches
inches
L2K-43ZM1
3.70-5.30:1
inches
L2K-55ZM1
4.80-7.40:1
inches
Zoom Lenses
0.9:1
1.10-1.70-1
inches
inches
1.50-2.10:1
L2K-30ZM
