Patent ID: 8038307
Filing Date: 2011-10-18
Classification: G03B

Abstract:
1. A projector comprising: a projection optical device that magnifies and projects image light; and a projection position adjusting device that moves the projection optical device in a plane orthogonal to a projecting direction and adjusts a projection position of the projection optical device, wherein the projection position adjusting device includes: a fixed member fixed in the projector; a first moving plate that supports the projection optical device and moves in a first axial direction and a second axial direction orthogonal to each other in the plane orthogonal to the projecting direction; a second moving plate that is interposed between the fixed member and the first moving plate, engages with the first moving plate, and moves in the second axial direction together with the first moving plate; adjusting and driving units that move the first moving plate and the second moving plate; and plural coupling members that movably couple the first moving plate to the fixed member, the fixing member defining a coupling through hole of a stepped shape, which has a diameter dimension on a side closer to the first moving plate smaller than on a side further from the first moving plate and has a step, and each of the coupling members includes: a connecting member having one end side and an other end side and being formed in a stepped shape, the connecting member having a sectional area on the other end side smaller than that on the one end side, the other end side being connected to the first moving plate in a state in which the connecting member is inserted in the coupling through hole; and an interposed member disposed between the step of the connecting member and a step of the coupling through hole urges the step of the connecting member and the step of the coupling through hole in directions away from each other, and brings the first moving plate into contact with the fixed member.