UHV Mirror Mounting Manipulators Adjust Roll, Pitch and Yaw from outside the vacuum Flexible, clean, strut based system Manual, stepper and piezo drive systems Works with cooled optics and accessories All metal seal to bellows connect

The McPherson strut-type manipulator rotates an optic about its pole. Each motion is independent about the other two axes. All adjustments and mechanisms are outside of the vacuum chamber. This feature keeps the mechanisms away from heat during baking and allows for maintenance without venting the system. This design can be used in any orientation. The rugged construction handles a load of 200 lb.

The position and orientation of the manipulator stem are fully constrained by six struts. Three additional struts are used to determine the pivot point of the manipulator assembly. Available with manual, motorized or piezo motions user requirements can determine the degree of automation provided. All motorized motions have a NEMA 23 motor mount with a .250 dia. input shaft. An inline NEMA 23 gear box is easily added for higher resolution.

The Pivot Point Three pre-set struts cause the optic to rotate about its pole. The Figure shows how the axes of the three struts align with the center of rotation of the optic. The length of these three struts is critical, altering them will cause the manipulator to rotate about a point off the pole of the optic.

The set of three struts that determine the pivot point are usually on top of the manipulator. Struts for adjusting roll, pitch and yaw are added by a second stage with six struts.