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depth of focus is limiting the tilt of the
of a three-dimensional test field with
optimal (see fig. 2). On top of the "U"
information and instead of the object, a
control.
object against the optical axis and the use
the shape of an U has been found as
a reseau grid is used as 3D-control point
reseau below the U is used for vertical
fig 1 stereo microscope
Caused by the small view angle, the elements of interior orientation are highly
correlated. But the determined object coordinates inside the three-dimensional are
not influenced by this.
fig. 3 geometric condition of stereo microscope
