Laser module and system

摘要

Laser modules and systems are provided that are smaller, lighter, and less complex and while more reliably generating collimated laser beams having limited divergence.

主权项

1. An optical system for a semiconductor laser that emits a divergent laser light, the optical system comprising:
a lens with a focal length of greater than 10 mm and that can collimate the divergent laser light into a collimated beam having less than a predetermined divergence when the lens is positioned within a larger range of positions about a focal length of the lens; and, a frame assembled to the lens to hold the lens within the larger range of positions when the system is in a first range of temperatures; wherein the larger range of positions is at least 50 percent greater than a smaller range of positions that an alternate smaller lens having a same numerical aperture as the lens and smaller focal length can be positioned within to provide a collimated beam having less than the predetermined divergence.