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MIL-PRF-29580 Spectacles, Aviator\'S, Multiple Wavelength Laser Protective, Edu-5/P \(With Case\)This specification addresses the requirements for rotary and fixed wing aviator\'s spectacles with carrying case, designated EDU-5/P, which provide protection against multiple fixed laser wavelengths.

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MIL-PRF-29580C
3.4.4.3 Low temperature. When tested as specified in 4.5.3.5, the spectacles shall withstand
low temperature stresses, with no delamination of lenses or coatings.
3.4.4.4 Temperature shock. When tested as specified in 4.5.3.6, the spectacles shall
withstand the effects of rapid changes in ambient temperature, with no delamination of lenses or
coatings.
3.4.4.5 Rain. When tested as specified in 4.5.3.7, the spectacles shall withstand the effects
of prolonged exposure to blowing rain, with no delamination of lenses or coatings.
3.4.4.6 Humidity. When tested as specified in 4.5.3.8, the spectacles shall be capable of
operation under wide temperature and humidity extremes, with no delamination of lenses or
coatings.
3.4.4.6.1 Adhesion of coating. When tested as specified in 4.5.3.8.1, there shall not be any
delamination of the lenses or coatings. Delamination, removal, or loosening of the coating shall
be cause for rejection.
3.4.4.7 Salt fog resistance. When tested as specified in 4.5.3.9, the spectacles shall
withstand the effects of prolonged environmental salt fog, with no delamination of lenses or
coatings.
3.4.5 Impact resistance. When tested as specified in 4.5.4, the lens shall not fracture through
its entire thickness and across a complete diameter into two or more separate pieces.
3.4.6 Frame.
3.4.6.1 Corrosion resistance. When tested as specified in 4.5.5.1, there shall be no evidence
of corrosion on any of the surfaces in contact with the wearer.
3.4.6.2 Heat resistance. When tested as specified in 4.5.5.2, there shall be no visible signs of
blistering, discoloration, or visible white or crystalline film.
3.4.6.3 Ductility. When tested as specified in 4.5.5.3, there shall be no visible cracks passing
completely across the frame or temple arms.
3.4.6.4 Adhesion of plating. When tested as specified in 4.5.5.4, adhesion of any plating and
underplating shall be such that the coating and undercoating shall not separate from each other or
from the base material.
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