Patent ID: 8373792
Filing Date: 2013-02-12
Classification: G03B,H04N

Abstract:
1. An autofocus apparatus comprising: a photographing optical system having at least a focus adjusting lens disposed movably and an image forming lens to form, into an image, light beams incident on said focus adjusting lens and emerging from an object; a plurality of focusing estimating devices to create focusing data to focus an image formed on a predetermined plane through said photographing optical system, upon the object; a storage device stored with a correction value for the focusing data created by at least one of said plurality of focusing estimating devices, said correction value being stored differently from the focusing data; an updating device to update the correction value stored in said storage device at a predetermined timing; a correcting device to correct, with the correction value, the focusing data corresponding to the correction value stored in said storage device; a selecting device to select at least one of said plurality of focusing estimating devices; and a moving device to move said focus adjusting lens on the basis of the focusing data created by said focusing estimating device selected by said selecting device, or the relevant corrected focusing data if the relevant corrected focusing data has been corrected by said correcting device.