Beam Expander is any optical system designed to increase the diameter of a laser beam. In most cases, the term is taken to mean a telescope designed to take a small-diameter collimated beam input beam and produce a larger diameter collimated output beam, thus reducing the divergence of the beam. The beam expander consists of a negative input lens and a positive objective lens. The expansion factor is the ratio of the focal length of the two lenses.

Ball Lenses are commonly used for laser collimating and focusing, laser-to-fibre coupling, fibre-to-fibre coupling, and fibre-to-detector coupling.

Half-Ball (hemispherical) Lenses are ideal for applications such as fibre communication, endoscopy, microscopy, optical pick-up devices and laser measurement systems.

Rod Lenses are polished on the circumference and ground on both ends. Optical performance is similar to a cylinder lens. Collimated light passing through the diameter of the rod will be focused into a line.

Laser Line Generator Lenses can be used to display a uniform straight reference line for use in alignment, machine vision systems, construction and process control. In addition, the lenses may also be used on lower power lasers, (note that intensity will be diminished in normal work light and distances). Lenses are available in fan angles of 30°, 45°, 60° and 90° are unmounted for custom applications.