Stereoscopic display apparatus and control method

A method of controlling a stereoscopic display apparatus including:

• a projector of a planar shape that divides light rays into two or more directions and projects two or more images by using the divided light;
• an optical device of a planar shape that outputs incident light incident from a first face from a second face;
• and
• a supporting unit that supports at least one of the projector and the optical device,
• the optical device outputting incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference,
• wherein, in a three-dimensional coordinate system including first to third coordinate axes that are orthogonal to each other, in a case where a state in which, in a case where first and second virtual lines orthogonal to each other on the plane of the optical device and third and fourth virtual lines orthogonal to each other on the projection surface of the projector are assumed to be projected onto a first plane including the first and second coordinate axes, the first and third virtual lines overlap each other, and the second and fourth virtual lines overlap each other is set as a first state, and, a state in which, in the third-dimensional coordinate system, the first virtual line and the third virtual line are not parallel to each other, and the second virtual line and the fourth virtual line are not parallel to each other is set as a second state, the supporting unit is controlled such that the projector and the optical device become the second state from the first state.

A stereoscopic display apparatus comprising:

• a projector of a planar shape that divides light rays into two or more directions and projects two or more images by using the divided light;
• an optical device of a planar shape that outputs incident light incident from a first face from a second face;
• and
• a position detecting unit that detects two viewpoint positions of an observer;
• and
• an image processing unit that interchanges two or more images projected by the projector with each other in an arbitrary area and inputs resultant images to the projector,
• wherein the optical device outputs incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference, and
• wherein the image processing unit calculates the arbitrary area based on a distance between the second point and a center point of the two viewpoint positions of the observer.

A method of controlling a stereoscopic display apparatus that includes:

• a projector of a planar shape that divides light rays into two or more directions and projects two or more images by using the divided light;
• an optical device of a planar shape that outputs incident light incident from a first face from a second face;
• and
• a position detecting unit that detects two viewpoint positions of an observer;
• and
• an image processing unit that inputs two or more images projected by the projector to the projector,
• the optical device outputting incident light incident from a first point on a projection surface of the projector to a second point having plane symmetry with respect to a plane of the optical device as a reference,
• wherein the stereoscopic apparatus is controlled such that an arbitrary area is calculated based on a distance between the second point and a center point of the two viewpoint positions of the observer, and the two or more images projected by the projector are interchanged with each other in the calculated arbitrary area.