초록 ▼

An object of this invention is to increase the precision and speed of autofocusing operation. To achieve this object, an image sensing apparatus includes a photographing optical system which forms an object image, the photographing optical system having a focusing optical system which adjusts the im

An object of this invention is to increase the precision and speed of autofocusing operation. To achieve this object, an image sensing apparatus includes a photographing optical system which forms an object image, the photographing optical system having a focusing optical system which adjusts the imaging position of the object image, an image sensing element which photoelectrically converts the object image formed by the photographing optical system to generate an electrical image signal, an in-focus position detection device which detects the in-focus position of the focusing optical system for forming the object image on the image sensing element, on the basis of the image signal generated by the image sensing element while the focusing optical system adjusts the imaging position of the object image, and a distance measurement device which has a plurality of light-receiving portions for receiving a beam from an object, and measures a distance to the object on the basis of output signals from the light-receiving portions.

대표청구항 ▼

What is claimed is: 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 conver

What is claimed is: 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. 2. 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 and a zoom optical system for changing a view angle of a photographing frame; 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; 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; and an arithmetic device which corrects a distance measurement result of said distance measurement device on the basis of detection results of said in-focus position detection device and said distance measurement device, wherein when a zoom position of said zoom optical system in distance measurement operation by said distance measurement device is closer to a telephoto side by not less than a predetermined value than a zoom position in immediately preceding in-focus position detection by said in-focus position detection device, correction of the distance measurement result of said distance measurement device is inhibited. 3. 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 and a zoom optical system for changing a view angle of a photographing frame; 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; 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; and an arithmetic device which corrects a distance measurement result of said distance measurement device on the basis of detection results of said in-focus position detection device and said distance measurement device, wherein when a zoom position obtained when in-focus position detection by said in-focus position detection device is performed immediately preceding to distance measurement operation by said distance measurement device is closer to a wide-angle side by a predetermined value, correction of the distance measurement result of said distance measurement device is inhibited. 4. 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, a zoom optical system for changing a view angle of a photographing frame, and a macro function capable of near-distance photographing; 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; 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; and an arithmetic device which corrects a distance measurement result of said distance measurement device on the basis of detection results of said in-focus position detection device and said distance measurement device, wherein when a macro/non-macro setting of the macro function changes between distance measurement operation by said distance measurement device and immediately preceding in-focus position detection by said in-focus position detection device, correction of the distance measurement result of said distance measurement device is inhibited. 5. A method of controlling an image sensing apparatus having a photographing optical system which forms an object image, the photographing optical system having a focusing optical system which adjusts an imaging position of the object image and a zoom optical system for changing a view angle of a photographing frame, an image sensing element which photoelectrically converts the object image formed by the photographing optical system to generate an electrical image signal, an in-focus position detection device which detects an in-focus position of the focusing optical system for forming the object image on the image sensing element, on the basis of the image signal generated by the image sensing element while the 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 the light-receiving device, comprising an arithmetic step of correcting a distance measurement result of the distance measurement device on the basis of detection results of the in-focus position detection device and the distance measurement device, wherein when a zoom position of the zoom optical system in distance measurement operation by the distance measurement device is closer to a telephoto side by not less than a predetermined value than a zoom position in immediately preceding in-focus position detection by the in-focus position detection device, correction of the distance measurement result of the distance measurement device is inhibited. 6. A method of controlling an image sensing apparatus having a photographing optical system which forms an object image, the photographing optical system having a focusing optical system which adjusts an imaging position of the object image and a zoom optical system for changing a view angle of a photographing frame, an image sensing element which photoelectrically converts the object image formed by the photographing optical system to generate an electrical image signal, an in-focus position detection device which detects an in-focus position of the focusing optical system for forming the object image on the image sensing element, on the basis of the image signal generated by the image sensing element while the 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 the light-receiving device, comprising an arithmetic step of correcting a distance measurement result of the distance measurement device on the basis of detection results of the in-focus position detection device and the distance measurement device, wherein when a zoom position obtained when in-focus position detection by said in-focus position detection device is performed immediately preceding to distance measurement operation by said distance measurement device is closer to a wide-angle side by a predetermined value, correction of the distance measurement result of said distance measurement device is inhibited. 7. A method of controlling an image sensing apparatus having a photographing optical system which forms an object image, the photographing optical system having a focusing optical system which adjusts an imaging position of the object image, a zoom optical system for changing a view angle of a photographing frame, and a macro function capable of near-distance photographing, an image sensing element which photoelectrically converts the object image formed by the photographing optical system to generate an electrical image signal, an in-focus position detection device which detects an in-focus position of the focusing optical system for forming the object image on the image sensing element, on the basis of the image signal generated by the image sensing element while the 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 the light-receiving device, comprising an arithmetic step of correcting a distance measurement result of the distance measurement device on the basis of detection results of the in-focus position detection device and the distance measurement device, wherein when a macro/non-macro setting of the macro function changes between distance measurement operation by said distance measurement device and immediately preceding in-focus position detection by said in-focus position detection device, correction of the distance measurement result of said distance measurement device is inhibited. 8. 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; 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; and an arithmetic device which corrects a distance measurement result of said distance measurement device on the basis of detection results of said in focus position detection device and said distance measurement device, wherein an object distance range within which detection ranges of said in focus position detection device and said distance measurement device are regarded to coincide with each other is controlled in accordance with a correction result of said arithmetic 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.