Cemented Surfaces
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Because a cemented interface is considered a lens surface, specified surface
quality standards apply. Edge separation at a cemented interface cannot extend
into the element more than half the distance to the element clear aperture up to
a maximum of 1.0 mm. The sum of edge separations deeper than 0.5 mm cannot
exceed 10% of the element perimeter. |
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| Optics Guide Copyright 2002 Melles Griot Inc. |