Patent ID: 9210346
Filing Date: 2015-12-08
Classification: G02B,G03B

Abstract:
1. An apparatus which includes a defocus amount detection unit using a signal, comprising: a sensor having photoelectric conversion portions and charging portions, the charging portions being configured to integrate, for each of the photoelectric conversion portions, charges transferred from the photoelectric conversion portions, wherein the sensor is configured to output the signal for detecting a defocus amount; and a controller configured to control an accumulation operation of the sensor by switching between an accumulation operation of a first type and an accumulation operation of a second type, wherein the accumulation operation of the first type is configured to be able to monitor an amount of accumulated charges during a charge accumulation period based on charges integrated by the charging portions and the accumulation operation of the second type is configured to be unable to monitor the amount of the accumulated charges during the charge accumulation period based on the charges integrated by the charging portions.