Patent ID: 7411624
Filing Date: 2008-08-12
Classification: H04N

Abstract:
1. An image sensing apparatus comprising: a photographing optical system which forms an object image, said photographing optical system having a focusing optical system which adjusts an imaging position of the object image; an image sensing element which photoelectrically converts the object image formed by said photographing optical system to generate an electrical image signal; an in focus position detection device which detects an in focus position of said focusing optical system for forming the object image on said image sensing element, on the basis of the image signal generated by said image sensing element while said focusing optical system adjusts the imaging position of the object image; and a distance measurement device which has a light receiving device for receiving a beam from an object, and measures a distance to the object on the basis of an output signal from said light receiving device, wherein a detection range for detecting a further in focus position in said in focus position detection device is controlled in accordance with a measurement result of said distance measurement device, and wherein said arithmetic device corrects the distance measurement result of said distance measurement device on the basis of the detection results of said in focus position detection device and said distance measurement device when a difference between time at which distance measurement operation is performed by said distance measurement device and time at which immediately preceding in focus position detection is performed by said in focus position detection device is not more than a predetermined time, and a difference between a temperature obtained when the distance measurement operation is performed by said distance measurement device and a temperature obtained when the immediately preceding in focus position detection is performed by said in focus position detection device is not more than a predetermined temperature.