Patent ID: 9185393
Filing Date: 2015-11-10
Classification: G02B,H04N

Abstract:
1. An image capturing device comprising: an imaging device including a plurality of photoelectric conversion elements arranged in two dimensions to form an image capturing surface, wherein the plurality of photoelectric conversion elements are exposed and the imaging device generates an image signal by reading out electrical signals from the plurality of photoelectric conversion elements; a lens optical system including a focus lens for collecting light toward the imaging device; a driving section for driving one of the imaging device and the focus lens so as to change a distance between the imaging device and the focus lens; a displacement control section configured to, by outputting a command to the driving section, control displacement of the imaging device or the focus lens to be driven based on a predetermined displacement pattern; a diaphragm having an aperture having a size which can be changed and being provided in the lens optical system; an aperture control section configured to control the size of the aperture of the diaphragm; a synchronizing section configured to control the displacement control section and the aperture control section based on exposure timing of the imaging device; and an image capturing parameter determining section for determining a duration of the exposure, the size of the diaphragm aperture, and the displacement pattern, wherein: the predetermined displacement pattern includes a first-type displacement pattern and a second-type displacement pattern by which the imaging device or the focus lens is displaced over different ranges between a first focus position of the focus lens or the imaging device at which focus is at a first object distance in an image capturing scene, and a second focus position of the focus lens or the imaging device at which focus is at a second object distance in the image capturing scene; in the predetermined displacement pattern, the first-type displacement pattern and the second-type displacement pattern are repeated alternately; and the aperture control section controls the diaphragm so as to have a first aperture and a second aperture having a different size from that of the first aperture in the first-type displacement pattern and the second-type displacement pattern based on timing from the synchronizing section.