Apparatus for aligning an optical device.

摘要

A polygon (12) of an optical system is supported by a housing (14) and requires precise alignment with respect to a base for proper operation of the optical system. A fixture (50) has a base that is mounted for rotation about an axis. A plurality of adjustable pad assemblies (70) are located between the base and the housing. Each pad assembly includes a mounting plate (72) that is positioned on the base and a bushing (76) that is secured to the housing. A compressible ring (74) surrounds a surface on the plate that receives an adhesive. Pushers (100) carried by the base engage the housing and urge the housing toward the base. The pushers are individually adjustable to control the position of the housing relative to the base about a plurality of axes. An optical instrument (130) measures the angular position of the optical device on the housing and, when it is properly positioned, it is held until the adhesive cures to bond the mounting plate and bushing together.