Patent ID: 7440687

Claim:
A stage apparatus comprising: a stationary support plate; a Y-direction moving member including a Y-direction rod portion extending in a Y-direction, parallel with the stationary support plate, and an X-direction rod portion connected to the Y-direction rod portion and extending in a X-direction parallel with the stationary support plate and extending perpendicular to said Y-direction, said Y-direction moving member being supported by said stationary support plate so as to relatively move in the Y-direction; an X-direction moving member which is supported by said X-direction rod portion of said Y-direction moving member so as to relatively move in said X-direction; wherein one of said X-direction moving member and said stationary support plate is provided with a projection, and the other of said X-direction moving member and said stationary support plate is provided with a rotation restriction support portion which supports said projection to move in a plane parallel with the stationary support plate relative to said other of the X-direction moving member and the stationary support plate and which prevents rotation of the X-direction moving member about the X-direction rod portion.