Patent ID: 9160919
Filing Date: 2015-10-13
Classification: H04N

Abstract:
1. A focus adjustment unit having an imaging section configured to generate an image signal by forming and capturing an optical image on an image sensor by an optical system including a focusing lens, for performing focus adjustment based on a focus detection signal relating to a focus detection area set within an imaging area, the focus adjustment unit comprising: a focusing lens position detection section configured to detect a position of the focusing lens; a storage section configured to store information on an image magnification change of the optical system along with the movement of the focusing lens; and a focus detection area setting section configured to set a focus detection area within the imaging area, wherein the focus detection area setting section sets the focus detection area based on the position of the focusing lens and the information on an image magnification change, and the focus detection area setting section calculates an image height of the focus detection area, after the focusing lens is moved, based on the image magnification change in accordance with a change of the position of the focusing lens and an image height of the focus detection area before the focusing lens is moved, and sets the focus detection area based on the calculated image height.