Internal marking device for dioptric or catadioptric optical device, e.g. for identifying and calibrating panoramic optical device, is based on marks, symbols or signs on lens surface not used in image projection

摘要

An internal marking device for a dioptric or catadioptric optical device, with planar or non-planar surface(s) (1) at the back of the frontal lens, not used in projection of an observed, photographed, filmed or scanned image on a sensor, has distinctive mark(s), symbol(s) or sign(s) visible from the exterior via the surface, and serves for technique identification or commercial differentiation of the optical system. Independent claims are included for: (1) a variant of the device, in which the planar or non-planar surface (2) is on the periphery of the lens and the internal device authorizes imaging of information such as mark(s), symbol(s) or sign(s) on the detector; (2) another variant of the device, in which the optical system includes (more generally) a device not used in projection as above and the internal device allows imaging of information such as mark(s), symbol(s) or sign(s) on the detector; (3) a corresponding external device, in which the optical system includes (more generally) a device not used in projection as above and the external device allows imaging of information such as mark(s), symbol(s) or sign(s) on the detector; (4) a device for aligning the various marking systems, consisting of at least one groove or correcting system or any other mechanical device for aligning the marking and optical systems; (5) an integrated alignment device, to be fixed to an optical device without forming part of the camera, which allows the relative positions of the optical device and sensor on at least one of the X and Y axes or regulates the rotation of the optical device with the camera; and (6) a corresponding method for identifying an optical device, based on detecting and identifying the markings and identifying the optical device by comparing the markings with a reference or interpreting the markings.