JP2011059346A5

JP2011059346A5 -

Info

Publication number: JP2011059346A5
Application number: JP2009208597A
Authority: JP
Filing date: 2009-09-09
Publication date: 2012-10-25
Anticipated expiration: 2029-09-09

Description

上記目的を達成するために、本発明の撮像装置は、位相差方式で焦点状態を検出するための、一列に配置された２つのラインセンサから成る第１のラインセンサ対、及び、該第１のラインセンサ対に対して垂直を為すように一列に配置された２つのラインセンサから成る第２のラインセンサ対とを有し、前記第１及び第２のラインセンサ対から出力される信号の少なくとも一部に基づいて、前記第１及び第２のラインセンサ対ごとに前記信号の位相のずれ量を検出し、焦点状態を求める焦点検出手段と、前記撮像装置の姿勢を検知する姿勢検知手段と、前記姿勢検知手段により検知された姿勢に基づいて、前記第１及び第２のラインセンサ対それぞれを構成する複数の光電変換素子の内、前記ずれ量の検出に用いる信号を出力する光電変換素子の範囲である検出範囲を変更する変更手段とを有し、前記変更手段は、前記撮像装置の姿勢が変更された場合に、変更前の前記第１のラインセンサ対の検出範囲を、変更後の前記第２のラインセンサ対の検出範囲として変更すると共に、変更前の前記第２のラインセンサ対の検出範囲を、変更後の前記第１のラインセンサ対の検出範囲として変更する。 In order to achieve the above object, an imaging apparatus according to the present invention includes a first line sensor pair composed of two line sensors arranged in a row for detecting a focus state by a phase difference method, and the first A second line sensor pair composed of two line sensors arranged in a line so as to be perpendicular to the pair of line sensors, and a signal output from the first and second line sensor pairs. Focus detection means for detecting the phase shift amount of the signal for each of the first and second line sensor pairs and determining the focus state based on at least a part, and attitude detection means for detecting the attitude of the imaging device If, based on the detected posture by the posture detection means, of said first and second multiple respective pairs of line sensors that make up the photoelectric conversion element, and outputs a signal used to detect the shift amount Photoelectric conversion element A change unit that changes a detection range that is a range of the first line sensor pair after changing the detection range of the first line sensor pair before the change when the posture of the imaging device is changed. Are changed as the detection range of the second line sensor pair, and the detection range of the second line sensor pair before the change is changed as the detection range of the first line sensor pair after the change.

Claims

A first line sensor pair composed of two line sensors arranged in a row for detecting a focus state by a phase difference method, and arranged in a row so as to be perpendicular to the first line sensor pair A second line sensor pair composed of two line sensors, and the first and second lines based on at least part of signals output from the first and second line sensor pairs. A focus detection means for detecting a phase shift amount of the signal for each sensor pair and obtaining a focus state;
Attitude detection means for detecting the attitude of the imaging device;
Based on the posture detected by the posture detecting means, wherein the first and of the second pair of line sensors photoelectric conversion elements of multiple that make up each photoelectric outputs a signal used to detect the shift quantity conversion Changing means for changing the detection range which is the range of the element,
The changing means changes the detection range of the first line sensor pair before the change as the detection range of the second line sensor pair after the change when the posture of the imaging apparatus is changed, An imaging apparatus, wherein a detection range of the second line sensor pair before change is changed as a detection range of the first line sensor pair after change.

A determination means for determining whether or not an index representing the stability of the focus state obtained from the focus detection means is within a preset range when the posture of the imaging device is changed;
When the determination unit determines that the index indicating the stability is not within a preset range, the change unit changes the detection range of the first and second line sensor pairs. The imaging apparatus according to claim 1.

2. The focus detection unit detects a deviation amount by extracting a signal corresponding to the detection range from signals output from the first and second line sensor pairs. 2. The imaging device according to 2.

The imaging according to claim 1, wherein the focus detection unit reads a signal from a photoelectric conversion element corresponding to the detection range among the photoelectric conversion elements of the first and second line sensor pairs. apparatus.

3. The charge detection unit according to claim 1, wherein the focus detection unit causes charge to be accumulated in a photoelectric conversion element corresponding to the detection range among the photoelectric conversion elements of the first and second line sensor pairs. The imaging device described.

A first line sensor pair composed of two line sensors arranged in a row for detecting a focus state by a phase difference method, and arranged in a row so as to be perpendicular to the first line sensor pair A second line sensor pair composed of two line sensors, and the first and second lines based on at least part of signals output from the first and second line sensor pairs. A method of controlling an imaging apparatus having a focus detection unit that detects a phase shift amount of the signal for each sensor pair and obtains a focus state,
A posture detection step in which the posture detection means detects the posture of the imaging device;
Based on the posture detected by the detection step position, the changing unit, of said first and second multiple respective pairs of line sensors that make up the photoelectric conversion element, a signal used for the detection of displacement amount And a changing step for changing a detection range that is a range of the photoelectric conversion element to perform,
In the changing step, when the posture of the imaging device is changed, the detection range of the first line sensor pair before the change is changed as the detection range of the second line sensor pair after the change, and the change is made. A method for controlling an imaging apparatus, wherein the detection range of the second pair of line sensors before is changed as the detection range of the first pair of line sensors after change.