专利名称：Apparatus for changing the direction of a
light beam passing through an articulatedjoint
发明人：Paul S. Turin,Georg Teslawski,Dexter C.
Tight, Jr.
申请号：US06/697998申请日：19850204公开号：US04667081A公开日：19870519
摘要：An articulated joint of changing the direction of a light beam passing throughthe joint has an inlet for the incoming light beam, an outlet for the outgoing light beam,two turning mirrors and three precision bearing units associated with the turning mirrorsfor permitting rotation of the mirrors with a minimum amount of error of angulardisplacement of the redirected beam. An apparatus providing movement of at least aportion of a beam delivery system and directing an outlet beam to a desired locationincludes the articulated joint, a motion delivery device operatively associated with thejoint and connecting means disposed between the joint and the motion delivery device.The connecting means are adapted to provide relative motion between an attachment ofthe connecting means to the joint and an attachment of the connecting means to themotion delivery device. The precision bearings are associated with the turning mirrors andthe outlet so as to decouple the articulated joint from the axis of the actuatormechanism, such as, for example, a robot arm. The precision bearing units incorporatetwo tapered roller bearings opposed to each other. Each tapered roller bearing has an
inner race and an outer race. A preload arrangement preloads the bearings by exerting aforce on the inner races which tends to squeeze the inner races together and by exertinga force on the outer races which tends to push the inner races apart.
申请人：SPECTRA-PHYSICS, INC.
代理人：Donald C. Feix,Paul Davis
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