METHOD AND DEVICE FOR CALIBRATING A PROJECTION DEVICE

The present invention relates to a method for calibrating a projection device, in particular a hand-held projection device, in a navigational environment for medical purposes, comprising the steps of: providing a detection device (1) configured to detect light emitted by the projection device (2); determining the spatial position of the detection device (1); projecting a known projection (3), comprising an area (4) configured to stimulate the detection device (1), towards the detection device (1) by means of the projection device (2); determining the position of the projection device (2), particularly in relation to the detection device (1) when the area (4) stimulates the detection device (1). The present invention also relates to a calibration device (11) for automatically calibrating a projection device (2), said calibration device (11) comprising a reference array (7) and a detection device (1) which is coupled to the reference array (7), in particular in a predetermined position, wherein the detection device (1) is configured to detect light, and to a self-calibrating projection device system comprising the calibration device (11) and a projection device (2) which is configured to generate a known projection (3) comprising an area (4) which is configured to stimulate a detection device (1) of the calibration device (11).