Support apparatus

A support apparatus comprising:

• a base member;
• an intermediate member;
• an upper member supported at an upper side of the base member via the intermediate member;
• a pair of first rails provided at the base member and arranged in parallel to each other in a state where the intermediate member is disposed between the pair of first rails, the pair of first rails extending in a first direction;
• and
• a pair of second rails provided at the upper member and arranged in parallel to each other in a state where the intermediate member is disposed between the pair of second rails, the pair of second rails extending in a second direction orthogonal to the first direction,
• each of the pair of first rails and the pair of second rails including a curving form with longitudinal opposed ends curving upward;
• the intermediate member including a pair of first rollers engaging with the pair of first rails and a pair of second rollers engaging with the pair of second rails;
• the intermediate member constituting a first pendulum mechanism that allows an oscillation of the upper member in the first direction;
• the intermediate member constituting a second pendulum mechanism that allows an oscillation of the upper member in the second direction;
• the intermediate member including a first drive portion that drives the pair of first rollers to rotate and a second drive portion that drives the pair of second rollers to rotate.