When the linearly polarized light interacts with the
optical surface, there is a shift in phases of both the components parallel and perpendicular to the plane of incidence.
"To characterize carbon fiber you need eleven." Mathematical models provide a starting point, but even so, he says, "we have to build little samples of different manufactured materials and test them for the different properties." Materials with specific characteristics are selected for different structural elements and
optical surfaces.
To appreciate the properties of a quality
optical surface some kind of benchmark is helpful.
Thus the machine creates the random environment so essential for achieving a fine
optical surface.
The two flat mirrors are easier to make than the lens, as they are smaller in diameter and have only one
optical surface each.
Allowing any dew to form on an
optical surface is probably a bad idea.
C-Rad Sentinel 4DCT is an easy-to-use, laser-based
optical surface scanning system with functionality for 4D CT reconstruction and gated imaging in a CT room.