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Device for detecting electromagnetic measurement radiation transmitted through material has multiple reflection radiation guide channel with inlet aperture perpendicular to main axis close enough to surface measurement material/air boundary
Device for detecting electromagnetic measurement radiation transmitted through material has multiple reflection radiation guide channel with inlet aperture perpendicular to main axis close enough to surface measurement material/air boundary
The transmitted radiation after exiting the measurement material passes into a channel that guides the radiation by multiple reflections and whose inlet aperture is oriented perpendicular to its main axis and positioned close enough to the boundary surface between the measurement material and the surrounding air at the radiation outlet side.
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