Patent ID: 8919219

Claim:
A precision transfer equipment comprising: a base; a movable body that is supported by the base and is movable in a predetermined moving direction; a driving body that is connected to the movable body via a joint; a drive mechanism that moves the driving body forward and backward in the moving direction; and a displacement detector that detects a displacement of the movable body relative to the base, wherein the joint is provided by a supplying-discharging static-pressure joint and comprises: a movement surface that is connected to the movable body in a manner orthogonal to the moving direction; a drive surface that is connected to the driving body in a manner to face the movement surface; a fluid supply channel that supplies fluid into a static-pressure clearance formed between the movement surface and the drive surface; and a fluid discharge channel that discharges the fluid from the static-pressure clearance, and the displacement detector is provided by a laser interferometer having a laser path of which an optical path extends along the moving direction and is configured such that laser light passing through the laser path passes through the driving body and the drive surface and is reflected on the movement surface.