The coupling of light into and out of optical fibers can only be achieved with collimated beams. Collimators produce parallel bundles of beams.
LASER COMPONENTS has SMA collimators available to reduce the divergence of the light out of the optical fiber to 3°. These collimators can be used with fibers that have an SMA connector and a numerical aperture of 0.22 (fan angle: 25.4°).
The integrated 5 mm collimator lens is available with two coatings for the wavelengths 400-2200 nm or 190-2200 nm.