Abstract: A laser diode lens assembly wherein a lens or lens assembly is immovably adhered to a housing of a laser diode package. The laser diode package may be a metal can style package having a substantially transparent window portion through which laser radiation is emitted when a laser diode inside the housing is supplied with current. The lens or lens assembly may be immovably fixed to an outer surface of this window so that a central axis of a beam of laser radiation emerging from the lens or lens assembly has a desired spatial relationship with a reference surface of the housing. An adhesive such as an epoxy adhesive which is cured under exposure to ultraviolet radiation may be used to freeze the lens or lens assembly in place to the window when the lens is correctly positioned.