| 摘要 |
PURPOSE:To enable focus adjustment to be made even for a fast moving subject by using a special operating method by the use of an optical system which applies the principle of an existing coincidence type. CONSTITUTION:Outputs i1, i2...in, j1, j2...jn from sensor groups 8, 9 are digitally converted with an A/D converter 11, and are stored in good order in a memory circuit 12. An arithmetic circuit 13 which operates sensor differential outputs, O position detection outputs and sensor movement extent and focus detection outputs performs operation while being controlled. The focusing detection output which is the result thereof is sent to a driving circuit 14 having a lens driving circuit and a display circuit, whereby focus coincidence operation is accomplished. |
