Our standard Fibre Optic Collimators employ plano-convex lenses
positioned at their focal length from the optical fibre tip. The
standard collimators use SMA female connectors for ease of coupling
to standard 0.22 N.A. fibre optic cables.
exiting from an optical fibre, collimators expand the beam and
decrease the divergence by the ratio of the fibre core diameter to
the collimator aperture.
100 µm core diameter fibre with an N.A. of 0.22 has an output
divergence of ±12.7°. When coupled to an LC-4, its
divergence is reduced to 0.100/4.00 x ±12.7° ±0.3°
at its center wavelength.
light entering the collimator will be focused into the fibre.
and Vis-NIR Refocusing Assemblies are offered for the LC-4, LC-10,
and LC-22 series collimators. These single-element cells thread into
the collimator, refocusing the beam at a given distance. Standard
refocusing assembles are listed below. Other focal lengths and AR
coated optics are available on a custom basis.
Available Options: FC, ST and SC connectors, .25" ferrules;
Operation with other N.A.s such as 0.12, 0.26, 0.37, and 0.40;
AR coated optics for 98% transmission at peak wavelength.
fibre configurations, numerical apertures, termination types, etc.,
see Custom Products.