Patent ID: 8511830

Claim:
A projection system comprising a first projection apparatus and second projection apparatus, the first projection apparatus including: a first projection unit configured to project an image onto a projection plane; and a first optical control unit configured to control an optical system such that an image, that is positioned at a designated first specific position of the image projected by the first projection unit, is sharply displayed on the projection plane, the second projection apparatus including: a second projection unit configured to project an image onto a projection plane; and a second optical control unit configured to control an optical system such that an image, that is positioned at a designated second specific position of the image projected by the second projection unit, is sharply displayed on the projection plane, and the projection system comprising a control unit configured, if projection is performed in which a projection image projected by the first projection unit and a projection image projected by the second projection unit each form a part of one image, to control the first optical control unit so as to cause the first specific position to be closer to the projection image projected by the second projection unit relative to the center of the projection image projected by the first projection unit, and to control the second optical control unit so as to cause the second specific position to be closer to the projection image projected by the first projection unit relative to the center of the projection image projected by the second projection unit.