Patent ID: 9167151
Filing Date: 2015-10-20
Classification: G02B,H04N

Abstract:
1. A focus detection apparatus comprising: a sensor unit provided with a plurality of sensor pairs each of which receives a light beam from an object, accumulates charge, and outputs a pair of image signals for focus detection in a phase difference detection method; a control unit configured to detect a level of a predetermined signal based on the accumulated charge in each sensor pair, and control charge accumulation time in accordance with the level of the predetermined signal; and a setting unit configured to set a priority of each sensor pair in accordance with the object, wherein the setting unit sets the priority of a first sensor pair higher than the priority of a second sensor pair, the first sensor pair and the second sensor pair being included in the plurality of sensor pairs, wherein the control unit detects the level of the predetermined signal of the first sensor pair in prior to the level of the predetermined signal of the second sensor pair.