MIL-DTL-43511D
TABLE I. End item visual defects (continued)
Examine
Defect
Classification
Critical Major Minor
Stain or discoloration not readily removed
with water:
- Critical area of vision
7
- Non-critical area of vision
105
Sharp edge or burr:
- Affecting serviceability
106
- Not affecting serviceability
202
Transmittance gradient not smooth
and uniform (class 3 visor)
8
Design
Not as specified
9
4.3.4 End item dimensional examination. The visors shall be examined for conformance to the
dimensions specified in the end item specification, drawings, or contract. Any dimension not
within the specified tolerance shall be classified as a critical defect.
4.3.5 End item testing. The visors shall be tested for the characteristics listed in Table II.
TABLE II. End item tests
Characteristic
Requirement
Test method
Number of
Results
paragraph
determinations
to nearest
Prismatic
3.5.1
4.4.1
1/unit
0.01 diopter
deviation
Refractive
3.5.2
4.4.2
2/unit
0.01 diopter
Power
Luminous
3.5.3
4.4.3
1/unit for class 1
1 percent
transmittance
2/unit for class 2
Optical density
3.5.4
4.4.4
2/unit for class 3
1 percent
Optical
3.5.5
4.4.5
1/unit
Pass or fail
distortion of
critical areas
Haze
3.5.6
4.4.6
1/unit
0.1 percent
Ultraviolet
3.5.7
4.4.7
1/unit
1 percent
transmittance 1/
7
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