초록 ▼

This invention relates to a focus detecting apparatus using an area sensor as an AF sensor, and particularly provides a focus detecting apparatus in which when any area in a scene is designated and the focus state in that area is to be detected, the output from an area on the sensor corresponding to

This invention relates to a focus detecting apparatus using an area sensor as an AF sensor, and particularly provides a focus detecting apparatus in which when any area in a scene is designated and the focus state in that area is to be detected, the output from an area on the sensor corresponding to the designated area of the scene is read and processed on the basis of the information of an area on the area sensor corresponding to the designated area of the scene pre-memorized in a memory circuit.

대표청구항 ▼

[ What is claimed is:] [1.] A focus detection apparatus comprising:a sensor circuit having a first sensor part and a second sensor part, each sensor part having a plurality of sensor elements disposed in a plurality of rows and columns;a read out circuit which independently reads out the signals of

[ What is claimed is:] [1.] A focus detection apparatus comprising:a sensor circuit having a first sensor part and a second sensor part, each sensor part having a plurality of sensor elements disposed in a plurality of rows and columns;a read out circuit which independently reads out the signals of said sensor elements;a store circuit for storing electrical signals read out by said read out circuit from each sensor element;a processing circuit for adding the stored signals from a plurality of sensor elements of the same row of the first sensor part stored in said store circuit, and for adding the stored signals from a plurality of sensor elements of the same row of the second sensor part stored in said store circuit;a designating circuit for designating a sensor element area of the electrical signals to be added by said processing circuit, said processing circuit adding the signals of said sensor elements of the first sensor part corresponding to the sensor element area designated by said designating circuit and also adding the signals of sensor elements of the second sensor part located at a corresponding position to the sensor elements of the first sensor part; anda detecting circuit for detecting a focus state in accordance with the added extracted signals of the first sensor part and the added extracted signals of the second sensor part.