MIL-PRF-22885/52D
TABLE I. Chromaticity limits and photometric brightness.
Chromaticity limits 1/
Switch photometric
2360° Kelvin
brightness
Color
Color code
(foot-lamberts) 2/ minimum
X
Y
280
210
280
330
35
Blue
B
420
330
420
210
610
230
540
350
150
Green
G
580
380
660
280
285
695
SL 3/
703
Red
R
150
655
325
660
SL 3/
390
490
420
490
150
White
W
410
535
435
535
410
565
SL 3/
580
Yellow
Y
150
540
435
550
SL 3/
1/ The chromaticity of the illuminated display, expressed as x and y coordinates on
the CIE chromaticity diagram, shall lie within areas bounded by the coordinates
listed for each color, using a source illuminate of 2360°K.
2/ Switch photometric brightness, when viewed from the front of the applicable
pushbutton display and using midget flange, T-1 ¾ incandescent lamps operated
at a 34 ±.02 MSCP.
3/ SL = Spectrum Locus (where intersected by other coordinate pair).
3
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