A collimator may consist of a curved mirror or lens with some type
of light source and/or an image at its focus. This can be used to replicate a target at infinity without parallax.
Calibration is needed for every qualified collimator. For
convenience sake, optical tube produce target at non-infinity is
named as microscope tube. As one of the essential optical
apparatus, the microscope tube is widely used in various optical
and mechanical equipments. Crewin provides both catalog and custom
product solutions on collimator, microscope tube and optical tube
for transform, delay, view or measure high quality optical objects.