MIL-PRF-44259E
CIE 1976 UCS DIAGRAM
.6
700-780
.5
FILTER
u' = .180
.4
v' = .500
r' = .055
v' .3
480
.2
.1
440
380-420
.0
.0
.1
.2
.3
.4
.5
.6
u'
FIGURE 1. 1976 Uniform chromaticity scale diagram showing
allowable color circle for filter.
3.5 Performance.
3.5.1 High and low temperature storage. The sample light assemblies shall show no
evidence of parts chipping, cracking, discoloration, extruding of impregnating or potting
compounds, warping, deformation, or other defects detrimental to the intended function when
tested for high temperature storage and cold temperature storage as specified in 4.4.10.
3.5.2 High temperature operation. Each of the light assemblies from the sample light
sets shall show no evidence of parts chipping, cracking, warping, deformation, improper
operation, failure to stay illuminated, or other defects detrimental to their intended function when
tested for high temperature operation as specified in 4.4.11.
3.5.3 Humidity. The sample light assemblies shall show no evidence of swelling of
materials due to moisture absorption, degradation of electrical properties in insulating materials,
electrical shorts, oxidation, galvanic corrosion, failure of lamps to light, or other defects which
are detrimental to the intended function when tested for humidity as specified in 4.4.12.
3.5.4 Vibration. The sample light assemblies shall show no evidence of wire chafing,
loose parts, touching or shorting of electrical parts, component fatigue, cracking of material,
permanent deformation, failure of lamps to light, or other defects detrimental to the intended
function when tested for vibration as specified in 4.4.13.
3.5.5 Noise levels. Each of the light assemblies from the sample light set shall be
operated in series. The audible noise shall not exceed 50 decibels at the A scale sound
performance level (SPL) at 1 foot from the light unit when tested as specified in 4.4.14.
6
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