JP2006215398A5 - - Google Patents

Claims (8)

カメラ本体と、
前記カメラ本体に着脱交換が可能で、かつ、合焦制御が可能な撮像レンズと、
前記撮像レンズにより形成される被写体像を光電変換して撮像を行う撮像素子と、を有する撮像装置において、
前記撮像レンズは前記カメラ本体に送信可能な記憶手段を有し、前記撮像レンズの設計上の補正値と共に前記撮像レンズの個体識別情報を前記記憶手段に記憶し、保持することを特徴とする撮像装置。 The camera body,
An imaging lens that can be attached to and detached from the camera body and can be controlled in focus,
In the imaging apparatus having an imaging device for imaging by photoelectrically converting an object image formed by the imaging lens,
The imaging lens has a storage unit that can be sent to the camera body, imaging, characterized in that stores individual identification information of the imaging lens with the correction value of the design of the imaging lens in the storage means, for holding apparatus. 前記カメラ本体は、前記撮像レンズから入射した光束を用いて位相差検出方式により前記撮像レンズの合焦状態を検出する焦点検出手段と、
前記撮像素子によって前記撮像レンズの合焦状態を判定する合焦判定手段と、
前記合焦判定手段により判定された前記撮像レンズの合焦状態を示す情報に基づいて、前記焦点検出手段により検出された前記撮像レンズの合焦状態を示す情報を補正する補正手段と、を有し、
前記補正手段により補正された前記合焦状態を示す情報を前記撮像レンズの個体識別情報と共に前記記憶手段に記憶し、保持する請求項１記載の撮像装置。 The camera body includes a focus detection unit that detects a focused state of the imaging lens by a phase difference detection method using a light beam incident from the imaging lens;
In-focus determination means for determining the in-focus state of the imaging lens by the imaging element;
Correction means for correcting the information indicating the focus state of the imaging lens detected by the focus detection means based on the information indicating the focus state of the imaging lens determined by the focus determination means. And
The imaging apparatus according to claim 1, wherein information indicating the in-focus state corrected by the correction unit is stored and held in the storage unit together with individual identification information of the imaging lens. 前記補正手段は、前記焦点検出手段により検出された前記撮像レンズの合焦状態を示す合焦位置情報と、前記合焦判定手段により判定された前記撮像レンズの合焦状態を示す合焦位置情報との差に基づいて、前記補正手段により補正された前記合焦状態を示す情報を求める請求項１記載の撮像装置。 The correction means includes in-focus position information indicating the in-focus state of the imaging lens detected by the focus detection means, and in-focus position information indicating the in-focus state of the imaging lens determined by the in-focus determination means. The image pickup apparatus according to claim 1, wherein information indicating the in-focus state corrected by the correction unit is obtained based on a difference between the correction value and the correction unit. 前記記憶手段は、前記補正手段により補正された前記合焦状態を示す情報をＨ、前記焦点検出手段により検出された前記撮像レンズの合焦状態を示す情報を補正するための設計上の補正情報をＨ’とすると、
Ｈ＋Ｈ’を前記撮像レンズの個体識別情報と共に前記記憶手段に記憶し、保持する請求項1記載の撮像装置。 The storage means is H for information indicating the focus state corrected by the correction means, and correction information for design for correcting information indicating the focus state of the imaging lens detected by the focus detection means. Is H ',
2. The imaging apparatus according to claim 1, wherein H + H ′ is stored and held in the storage unit together with individual identification information of the imaging lens. 前記補正手段は、少なくとも１回測定した補正された前記合焦状態を示す情報から、近似によって他の状態の前記合焦状態を示す情報の補正値を求める請求項１記載の撮像装置。 The imaging device according to claim 1, wherein the correction unit obtains a correction value of information indicating the in-focus state in another state by approximation from information indicating the corrected in-focus state measured at least once. 前記補正手段は、数回の測定によってより信頼性のあるデータに置き換える請求項１記載の撮像装置。 The imaging apparatus according to claim 1, wherein the correction unit replaces the data with more reliable data by several measurements. 前記合焦判定手段は、前記撮像レンズに含まれる焦点調節レンズを駆動しながら複数回、合焦判定を行う請求項１記載の撮像装置。 The imaging apparatus according to claim 1, wherein the focusing determination unit performs focusing determination a plurality of times while driving a focus adjustment lens included in the imaging lens. 前記補正情報を求めるための動作を行うキャリブレーションモードが設定可能である請求項１記載の撮像装置。 The imaging apparatus according to claim 1, wherein a calibration mode for performing an operation for obtaining the correction information can be set.