초록 ▼

A focusing state detecting or distance measuring apparatus or camera which measures a focusing state or distance of an object for a plurality of different areas in a scene. The apparatus or camera includes a light receiver for receiving a light beam associated with each area associated in the scene

A focusing state detecting or distance measuring apparatus or camera which measures a focusing state or distance of an object for a plurality of different areas in a scene. The apparatus or camera includes a light receiver for receiving a light beam associated with each area associated in the scene at a light receiving portion corresponding to each area. Each light receiving portion has a plurality of elements and provides an output corresponding to the received light. The apparatus also includes a processing circuit for performing calculation and regulation functions. When performing a calculation function, the circuit performs a correlation calculation on an output of each of the light receiving portions to detect a focusing state or distance for each light receiving portion. When performing a regulation function, the circuit sets a range of elements of each light receiving portion whose outputs are subject to the correlation calculation When the correlation calculation is to be performed at a particular light receiving portion and the correlation calculation at an other light receiving portion has already been performed, the circuit sets the range elements of the particular light receiving portion whose outputs are subject to the correlation calculation based on the result of the correlation calculation for the other light receiving portion.

대표청구항 ▼

[ What is claimed is:] [1.] A focusing state detecting or distance measuring apparatus which measures a focusing state or a distance of an object for a plurality of different areas in a scene, said apparatus comprising:light receiving means having a plurality of light receiving portions, each light

[ What is claimed is:] [1.] A focusing state detecting or distance measuring apparatus which measures a focusing state or a distance of an object for a plurality of different areas in a scene, said apparatus comprising:light receiving means having a plurality of light receiving portions, each light receiving portion corresponding to a respective one of the plurality of different areas in the scene and receiving a light beam associated with that area, each light receiving portion having a plurality of elements and providing an output corresponding to the received light; anda processing circuit for performing calculation and regulation functions, said processing circuit, when performing the calculation function, obtaining a focusing state or a distance associated with each of the plurality of different areas by a calculation on an output of each respectively corresponding light receiving portion, and, when performing the regulation function, setting a range of elements of each light receiving portion whose outputs are subject to the calculation of the calculation function,wherein, when the calculation is to be performed at a certain light receiving portion and the calculation at another light receiving portion has already been performed, said processing circuit sets the range of elements of the certain light receiving portion whose outputs are subject to the calculation based on the result of the calculation for the another light receiving portion.