Imaging device and focusing control method of imaging device
AssigneeFUJIFILM Corporation
InventorTetsu WADA
Life of this patent
Estimating the term…
Abstract
Provided are an imaging device capable of accelerating AF and a focusing control method thereof. A focus lens drive unit (16) that drives a focus lens (12), and an image sensor movement drive unit (120) that moves an image sensor (110) along an optical axis (L) are included. A target position of the focus lens (12) for focusing on a subject is set, and the focus lens (12) is moved toward the target position. The image sensor (110) is moved before the focus lens (12) reaches the target position such that focusing is performed. A focusing state is maintained by moving the image sensor (110) so as to follow the focus lens (12) after the focusing is performed.
Claims11
An imaging device comprising:
- an imaging lens that includes a focus lens;
- a focus lens drive unit that drives the focus lens;
- an image sensor;
- an image sensor movement drive unit that moves the image sensor along an optical axis;
- a driving target setting unit that sets a driving target of the focus lens for focusing on a subject;
- a focus lens drive controller that controls the driving of the focus lens based on the driving target set by the driving target setting unit;
- and
- an image sensor movement controller that performs control such that focusing is performed by moving the image sensor before the focus lens drive controllers stops the driving of the focus lens and a focusing state is maintained by moving the image sensor until the focus lens is stopped after the focusing is performed.
A focusing control method of an imaging device that includes an imaging lens which includes a focus lens, a focus lens drive unit which drives the focus lens, an image sensor, and an image sensor movement drive unit which moves the image sensor along an optical axis, the method comprising:
- a step of setting a driving target of the focus lens for focusing on a subject;
- a step of driving the focus lens based on the set driving target;
- and
- a step of performing control such that focusing is performed by moving the image sensor before the driving of the focus lens is stopped and a focusing state is maintained by moving the image sensor until the focus lens is stopped after the focusing is performed.
Dependencies are inferred from the claim text.