AXIS DEVIATION DETECTION DEVICE, PROJECTOR DEVICE AND AXIS DEVIATION DETECTION METHOD

摘要

PROBLEM TO BE SOLVED: To efficiently detect axis deviation in a plurality of axial directions and around a plurality of axes in a projector device.SOLUTION: Each of alignment detection devices 100 and 200 includes: a first position acquisition part 101 which acquires the position of a first projection point projected toward a first target point on a first projection surface disposed at a first distance from a projector device; a second position acquisition part 102 which acquires the position of a second projection point projected toward a second target point on a second projection surface disposed at a second distance from the projector device; a first axis deviation detection part 103 which uses a horizontal component of a first positional difference between the first target point and the first projection point and a horizontal component of a second positional difference between the second target point and the second projection point to detect values of axis deviation in a horizontal-axis direction and around a vertical axis of the projector device; and a second axis deviation detection part 104 which uses a vertical component of the first positional difference and a vertical component of the second positional difference to detect values of axis deviation in a vertical-axis direction and around a horizontal axis of the projector device.