JP4902890B2 - 撮像装置 - Google Patents
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- JP4902890B2 JP4902890B2 JP2009554230A JP2009554230A JP4902890B2 JP 4902890 B2 JP4902890 B2 JP 4902890B2 JP 2009554230 A JP2009554230 A JP 2009554230A JP 2009554230 A JP2009554230 A JP 2009554230A JP 4902890 B2 JP4902890 B2 JP 4902890B2
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Description
本発明に係る撮像装置としての撮像ユニット1を図1に示す。この撮像ユニット1は、被写体像を電気信号に変換するための撮像素子10と、撮像素子10を保持するためのパッケージ31と、位相差検出方式の焦点検出を行うための位相差検出ユニット20とを有している。
ここで、
Rk:透過部17のR画素補正量−透過部17以外のR画素補正量
Gk:透過部17のG画素補正量−透過部17以外のG画素補正量
Bk:透過部17のB画素補正量−透過部17以外のB画素補正量
とする。
次に、本発明の実施形態2に係る撮像装置としてのカメラについて説明する。
カメラ本体4は、被写体像を撮影画像として取得する前記実施形態1に係る撮像ユニット1と、撮像ユニット1の露光状態を調節するシャッタユニット42と、撮像ユニット1に入射する被写体像の赤外光除去とモアレ現象を軽減するためのIRカット兼OLPF(Optical Low Pass Filter)43と、液晶モニタで構成され、撮影画像やライブビュー画像や各種情報を表示する画像表示部44と、ボディ制御部5とを有している。
交換レンズ7は、カメラ本体4内の撮像ユニット1に被写体像を結ぶための撮像光学系を構成しており、主に、フォーカシングを行うフォーカス調節部7Aと、絞りを調節する絞り調節部7Bと、光路を調節することで像ブレを補正するレンズ用像ブレ補正部7Cと、交換レンズ7の動作を制御するレンズ制御部8とを有している。
このように構成されたカメラ100は、種々の撮影モード及び機能を備えている。以下、カメラ100の種々の撮影モード及び機能と共にそのときの動作を説明する。
カメラ100は、レリーズボタン40bが半押しされると、AFにより焦点を合わせるが、このAFとして、位相差検出方式AFと、コントラスト検出方式AFと、ハイブリッド方式AFとの3つのオートフォーカス機能を有している。これら3つのオートフォーカス機能は、カメラ本体4に設けられたAF設定スイッチ40cを操作することによって、撮影者が選択可能となっている。
まず、位相差検出方式AF方式によるカメラシステムの撮影動作について、図11,12を参照して説明する。
次に、コントラスト検出方式AFによるカメラシステムの撮影動作について、図13を参照して説明する。
続いて、ハイブリッド方式AFによるカメラシステムの撮影動作について、図14を参照して説明する。
以上の説明では、レリーズボタン40bの全押し後であって露光の直前に絞り込みを行っているが、以下では、位相差検出方式AF及びハイブリッド方式AFにおいて、レリーズボタン40bの全押し前であって、さらにオートフォーカス前に絞り込みを行うように構成した変形例について説明する。
具体的に、まず、変形例に係る位相差検出方式AFによるカメラシステムの撮影動作について、図15を参照して説明する。
次に、変形例に係るハイブリッド方式AFによるカメラシステムの撮影動作について、図16を参照して説明する。
以上の説明では、レリーズボタン40bが全押しされるごとに1つの画像が撮影されるが、カメラ100は、レリーズボタン40bの1回の全押し操作で複数の画像が撮影される連写モードを備えている。
本実施形態に係るカメラ100は、被写体像のコントラストに応じてオートフォーカスの方式を切り替えるように構成されている。つまり、カメラ100は、コントラストが低い条件下で撮影を行うローコンモードを備えている。
さらに、本実施形態に係るカメラ100は、カメラ本体4に取り付けられた交換レンズ7の種類に応じてオートフォーカスの方式を切り替えるように構成されている。
次に、本発明の実施形態3に係る撮像装置としてのカメラについて説明する。
カメラ本体204は、実施形態1のカメラ本体4の構成に加えて、ファインダ65を介して被写体像を視認するためのファインダ光学系6と、交換レンズ7からの入射光をファインダ光学系6に導く半透過のクイックリターンミラー46とをさらに有している。
このように構成されたカメラ200は、被写体の視認の仕方が異なる、ファインダ撮影モードとライブビュー撮影モードとの2つの撮影モードを備えている。以下、カメラ200の2つの撮影モードの動作を説明する。
まず、ファインダ撮影モードにおけるカメラシステムの撮影動作について、図23,24を参照して説明する。
次に、ライブビュー撮影モードにおけるカメラシステムの撮影動作について、図25,26を参照して説明する。
本発明は、前記実施形態について、以下のような構成としてもよい。
あってもよい。また、撮像素子のマイクロレンズの一部をセパレータレンズとし、瞳分割された被写体光をそれぞれ受光部にて受光できるように配列したカメラであってもよい。
10,210,310 撮像素子
11a 基板
11b 受光部
17 透過部(薄肉部)
20,420 位相差検出ユニット(位相差検出部)
21a コンデンサレンズ
23a セパレータレンズ
24a ラインセンサ(センサ)
31 パッケージ(保持部)
31c 開口(通過部)
100,200 カメラ(撮像装置)
Claims (8)
- 光を受けて光電変換を行うと共に、光が通過するように構成されている撮像素子と、
前記撮像素子を保持する保持部と、
前記撮像素子を通過した光を受光して位相差検出を行う位相差検出部とを備え、
前記保持部には、前記撮像素子を通過した光を通過させる通過部が設けられており、
前記撮像素子を通過した光が、前記通過部を介して前記保持部を通過し、前記位相差検出部に入射するように構成されている撮像装置。 - 請求項1に記載の撮像装置において、
前記撮像素子は、受光部と該受光部が配設される基板とをさらに有し、
前記基板は、光を通過させる撮像装置。 - 請求項2に記載の撮像装置において、
前記基板は、周辺部よりも薄く形成された薄肉部を有し、該薄肉部を介して光を通過させる撮像装置。 - 請求項1乃至3に記載の撮像装置において、
前記通過部は、前記保持部に形成された貫通孔である撮像装置。 - 請求項3に記載の撮像装置において、
前記通過部は、前記保持部に形成された貫通孔であり、
前記薄肉部は、複数形成されており、
前記保持部には、前記貫通孔が前記薄肉部に応じた個数だけ形成されており、
前記位相差検出部を前記貫通孔に応じた個数だけ備えている撮像装置。 - 請求項4又は5に記載の撮像装置において、
前記位相差検出部は、前記通過部を通過した光を分割するセパレータレンズと、該セパレータレンズによって分割された光の位相差を検出するセンサとを有し、
前記セパレータレンズは、前記貫通孔に嵌合される撮像装置。 - 請求項4又は5に記載の撮像装置において、
前記位相差検出部は、前記通過部を通過した光を集光するコンデンサレンズと、該コンデンサレンズによって集光された光を分割するセパレータレンズと、該セパレータレンズによって分割された光の位相差を検出するセンサとを有し、
前記コンデンサレンズは、前記貫通孔に嵌合される撮像装置。 - 請求項7に記載の撮像装置において、
前記セパレータレンズ、前記コンデンサレンズ及び前記センサは、一体的にユニット化されていると共に、ユニット化された状態で前記保持部に取り付けられる撮像装置。
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JP5097275B2 (ja) * | 2008-10-28 | 2012-12-12 | パナソニック株式会社 | 撮像ユニット |
JP5709532B2 (ja) * | 2011-01-05 | 2015-04-30 | キヤノン株式会社 | 自動合焦装置及びそれを有するレンズ装置及び撮像システム |
US9978154B2 (en) * | 2015-07-02 | 2018-05-22 | Pixart Imaging Inc. | Distance measurement device base on phase difference and distance measurement method thereof |
US10148864B2 (en) | 2015-07-02 | 2018-12-04 | Pixart Imaging Inc. | Imaging device having phase detection pixels and regular pixels, and operating method thereof |
KR20210034822A (ko) * | 2019-09-23 | 2021-03-31 | 삼성전자주식회사 | 디스플레이 및 카메라 장치를 포함하는 전자 장치 |
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US6768867B2 (en) | 2002-05-17 | 2004-07-27 | Olympus Corporation | Auto focusing system |
JP2005175976A (ja) | 2003-12-12 | 2005-06-30 | Canon Inc | 多層フォトダイオードを有する撮像素子を用いた撮像装置のオートフォーカスシステム |
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JP2007135140A (ja) | 2005-11-14 | 2007-05-31 | Konica Minolta Photo Imaging Inc | 撮像装置 |
JP4834394B2 (ja) | 2005-12-09 | 2011-12-14 | キヤノン株式会社 | 撮像装置およびその制御方法 |
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JPS5962809A (ja) * | 1982-10-04 | 1984-04-10 | Olympus Optical Co Ltd | 焦点検出装置 |
JPH10161014A (ja) * | 1996-11-26 | 1998-06-19 | Kyocera Corp | 2次元センサを用いた自動焦点検出装置 |
JPH11352394A (ja) * | 1998-06-09 | 1999-12-24 | Minolta Co Ltd | 焦点検出装置 |
JP2004046132A (ja) * | 2002-05-17 | 2004-02-12 | Olympus Corp | 自動焦点調節装置 |
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