JP2016139023A5

JP2016139023A5 - IMAGING DEVICE, LENS UNIT, IMAGING DEVICE CONTROL METHOD, AND PROGRAM

Info

Publication number: JP2016139023A5
Application number: JP2015014175A
Authority: JP
Filing date: 2015-01-28
Publication date: 2018-02-22
Anticipated expiration: 2035-01-28

Claims

An interchangeable lens unit having a focus lens driven in the direction of the optical axis is detachably mounted, and is an imaging device that is communicably connected to the lens unit via communication means in the mounted state,
Imaging means for outputting an image signal by imaging a subject;
Focus detection means for performing focus detection by a phase difference detection method using an image signal output from the imaging means;
A first lens stop that determines that the focus lens has stopped after a first stabilization waiting time that has been set in advance as a time during which the inversion drive of the focus lens is allowed after the focus lens stops, and starts the next operation. Control means;
After a second stabilization waiting time set in advance as a time until the focus lens vibration converges after the focus lens is stopped and the defocus amount can be calculated by the focus detection unit, A second lens stop control means for determining the stop and performing the next operation;
When the next operation after the focus lens is stopped is inversion driving, the control by the first lens stop control unit is selected, and the next operation after the focus lens is stopped is defocused by the focus detection unit. In the case of calculating the amount, an image pickup apparatus comprising: selection means for selecting control by the second lens stop control means.

The second lens stop control means determines that the focus lens is stopped when the position information of the focus lens acquired from the lens unit by communication by the communication means performed a plurality of times matches, and The imaging apparatus according to claim 1, wherein the second stabilization wait time is based on an acquisition timing of position information acquired immediately before determining that the position information of the focus lens matches.

The imaging apparatus according to claim 1, wherein the first stabilization wait time and the second stabilization wait time are acquired from the lens unit via the communication unit.

The selection means selects whether to use the first stabilization wait time or the second stabilization wait time based on the identification information of the focus lens acquired from the lens unit via the communication means. The imaging apparatus according to any one of claims 1 to 3, wherein the imaging apparatus includes:

Based on information acquired from the lens unit via the communication unit, a determination unit that determines whether the control by the first lens stop control unit and the second lens stop control unit is feasible. The imaging apparatus according to any one of claims 1 to 4, wherein the imaging apparatus is characterized in that

A focus lens driven in the direction of the optical axis;
Driving means for driving the focus lens;
Drive control means for controlling the drive means;
First communication means for communicating with the imaging device,
A lens unit detachable from the imaging device,
The imaging device
Imaging means for outputting an image signal by imaging a subject;
Focus detection means for performing focus detection by a phase difference detection method using an image signal output from the imaging means;
A first lens stop that determines that the focus lens has stopped after a first stabilization waiting time that has been set in advance as a time during which the inversion drive of the focus lens is allowed after the focus lens stops, and starts the next operation. Control means;
After a second stabilization waiting time set in advance as a time until the focus lens vibration converges after the focus lens is stopped and the defocus amount can be calculated by the focus detection unit, A second lens stop control means for determining the stop and performing the next operation;
When the next operation after the focus lens is stopped is inversion driving, the control by the first lens stop control unit is selected, and the next operation after the focus lens is stopped is defocused by the focus detection unit. In the case of calculating the amount, selection means for selecting control by the second lens stop control means;
Second communication means for communicating with the lens unit;
The lens unit according to claim 1, wherein the drive control unit controls the drive unit based on the focus detection result.

In this method, an interchangeable lens unit having a focus lens driven in the direction of the optical axis is detachably mounted, and an imaging apparatus connected to the lens unit via the communication means in a mounted state is controlled. And
An imaging step of outputting an image signal by imaging a subject;
A focus detection step of performing focus detection by a phase difference detection method using the image signal output in the imaging step;
A first lens stop that determines that the focus lens has stopped after a first stabilization waiting time that has been set in advance as a time during which the inversion drive of the focus lens is allowed after the focus lens stops, and starts the next operation. Control steps;
After a second stabilization waiting time set in advance as a time until the focus lens vibration converges after the focus lens is stopped and the defocus amount can be calculated in the focus detection step. A second lens stop control step for determining that it has stopped and performing the next operation;
When the next operation after stopping the focus lens is reverse driving, the control by the first lens stop control step is selected, and the next operation after stopping the focus lens is defocusing by the focus detection step. In the case of calculating the quantity, a selection step of selecting control by the second lens stop control step is provided.

This is a program for controlling an imaging device in which an interchangeable lens unit having a focus lens driven in the direction of the optical axis is detachably mounted and connected to the lens unit via the communication means in such a mounted state. And
An imaging step of outputting an image signal by imaging a subject;
A focus detection step of performing focus detection by a phase difference detection method using the image signal output in the imaging step;
A first lens stop that determines that the focus lens has stopped after a first stabilization waiting time that has been set in advance as a time during which the inversion drive of the focus lens is allowed after the focus lens stops, and starts the next operation. Control steps;
After a second stabilization waiting time set in advance as a time until the focus lens vibration converges after the focus lens is stopped and the defocus amount can be calculated in the focus detection step. A second lens stop control step for determining that it has stopped and performing the next operation;
When the next operation after stopping the focus lens is reverse driving, the control by the first lens stop control step is selected, and the next operation after stopping the focus lens is defocusing by the focus detection step. In the case of calculating the amount, a program for causing a computer to execute a selection step of selecting control by the second lens stop control step .