MIL-PRF-38169A
TABLE II. Sample computation table of chromaticity coordinates.
Wave length
_
_
_
_
_
_
(nm)
x
y
z
T
xT
yT
zT
380
4
20
0.104
0
0
2
390
19
89
0.240
5
0
21
400
85
2
404
0.301
26
1
122
410
329
9
1,570
0.275
90
2
432
420
1,238
37
5,949
0.174
215
6
1,035
430
2,997
122
14,628
0.110
330
13
1,609
440
3,975
262
19,938
0.093
370
24
1,854
450
3,915
443
20,638
0.092
360
41
1,899
460
3,362
694
19,299
0.100
336
69
1,930
470
2,272
1,058
14,972
0.110
250
116
1,647
480
1,112
1,618
9,461
0.122
136
197
1,154
490
363
2,358
5,274
0.132
48
311
696
500
52
3,401
2,864
0.140
7
476
401
510
89
4,833
1,520
0.142
13
686
216
520
576
6,462
712
0.142
82
918
101
530
1,523
7,934
388
0.141
215
1,119
55
540
2,785
9,149
195
0.141
393
1,290
27
550
4,282
9,832
86
0.155
664
1,524
13
560
5,880
9,841
39
0.170
1,000
1,673
7
570
7,322
9,147
20
0.167
1,223
1,528
3
580
8,417
7,992
16
0.153
1,288
1,223
2
590
8,984
6,627
10
0.142
1,276
941
1
600
8,949
5,316
7
0.136
1,217
723
1
610
8,325
4,176
2
0.136
1,132
568
0
620
7,070
5,153
2
0.137
969
432
630
5,309
2,190
0.137
727
300
640
3,693
1,443
0.138
510
199
650
2,349
886
0.150
352
133
660
1,361
504
0.199
256
94
670
708
259
0.270
191
70
680
369
134
0.368
136
49
690
171
62
0.475
81
29
700
82
29
0.576
47
17
710
39
14
0.620
24
9
720
19
6
0.636
12
4
730
8
3
0.643
5
2
740
4
2
0.642
3
1
750
2
1
.0.632
1
1
760
1
1
0.620
1
1
770
1
0.600
1
0
Totals
X=13,992
Y=14,790
Z=13,228
LEGEND:
_
_
_
X = ΣxT, Y=ΣyT, Z=ΣzT
TC = Spectral transmittance, = Y/1,000 = 14.8 percent
Chromaticity coordinates:
x = X/(X+Y+Z) = 13,992 / (13,992 + 14,970 +13,228) = 0.3331
y = Y/(X+Y+Z) = 14,790 / (13,992 + 14,970 +13,228) = 0.3521
NOTE: Spectral transmittance, TC, and chromaticity coordinates, x and y, are for CIE
illuminant D65 (see 6.3.3).
13
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