Patent ID: 8953089
Filing Date: 2015-02-10
Classification: G02B,G03B,H04N

Abstract:
1. An imaging apparatus that is mountable to a lens unit provided with an imaging optical system including a focus lens, the imaging apparatus comprising: an imaging unit configured to generate an imaging signal by photo-electrically converting an object image in synchronization with an output of a vertical synchronization signal; a signal processing unit configured to generate an evaluation signal for focus adjustment using the imaging signal; and a control unit configured to generate drive information about a focus lens based on the evaluation signal and to transmit the drive information to the mounted lens unit, wherein, when micro vibration of the focus lens is performed, the control unit is configured to transmit to the lens unit first information about a position of the focus lens to serve as a reference position for micro vibration and second information about an amount of movement of the focus lens indicated as a shift amount of an image plane with reference to the position of the focus lens corresponding to the first information as the drive information, and to receive third information, which is generated by the lens unit based on the first information and the second information, about the position of the focus lens to serve as an actual reference position for the micro vibration, wherein the control unit is configured to communicate with the lens unit twice during a time period from a time when the vertical synchronization signal is output to a time when a next vertical synchronization signal is output, the control unit being configured to receive the third information based on the last first information and the second information from the lens unit in a first communication, and to transmit the next first information and the second information to the lens unit in a second communication.