An apparatus for attenuating a laser beam.

摘要

An attenuator for varying the power of a laser scanning light beam includes a bracket (56) having a reduced portion (59) intermediate its ends (60,62). One end (62) is fixed to a housing and the other end (60) can be pivoted about the reduced portion. A glass sheet (64) is secured to the movable end (60) and occupies a position which intercepts the laser light beam at an angle of incidence which varies in accordance with the amount of pivotal movement of the movable end (60) about the reduced portion. The beam is reflected by the surfaces of the glass sheet in accordance with the angle of incidence and causes variation in the intensity of the light beam passing through the glass sheet (64).