JP4902891B2 - 撮像装置 - Google Patents
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- JP4902891B2 JP4902891B2 JP2009554231A JP2009554231A JP4902891B2 JP 4902891 B2 JP4902891 B2 JP 4902891B2 JP 2009554231 A JP2009554231 A JP 2009554231A JP 2009554231 A JP2009554231 A JP 2009554231A JP 4902891 B2 JP4902891 B2 JP 4902891B2
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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2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。
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100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2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 撮像素子
11a,211a 基板
11b 受光部
15r,15g,15b カラーフィルタ
18a 貫通孔
20,320 位相差検出ユニット(位相差検出部)
21a,321a コンデンサレンズ
23a,323a セパレータレンズ
24a,324a ラインセンサ(センサ)
100,200 カメラ(撮像装置)
5 ボディ制御部(制御部)
Claims (7)
- 受光部と該受光部が配設される基板とを有して光を受けて光電変換を行うと共に、該基板に貫通孔が形成された撮像素子と、
前記貫通孔を介して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る撮像装置。 - 請求項1に記載の撮像装置において、
前記位相差検出部は、前記貫通孔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、
前記貫通孔は、複数形成されており、
前記セパレータレンズには、複数の前記貫通孔を通過した光が入射するように構成されている撮像装置。 - 請求項1又は2に記載の撮像装置において、
前記撮像素子は、前記受光部に対応して設けられたカラーフィルタをさらに有し、
前記貫通孔には、前記カラーフィルタが設けられていない撮像装置。 - 請求項3に記載の撮像装置において、
前記基板には、前記受光部及び前記貫通孔が設けられる領域が行列状に形成され、2行2列に隣接する4つの領域を1単位として、該4つの領域中の3つの領域にそれぞれ受光部が配設されると共に残りの1つの領域に前記貫通孔が形成されており、
前記受光部が配設された3つの領域には、それぞれ別々の色に対応したカラーフィルタが設けられている撮像装置。 - 請求項4に記載の撮像装置において、
前記3つの領域に配設されたカラーフィルタの色は、赤、緑、青である撮像装置。 - 請求項5に記載の撮像装置において、
前記撮像素子の出力に基づいて画像信号を作成する制御部をさらに備え、
前記制御部は、前記貫通孔に近接する前記緑のカラーフィルタが設けられた受光部の出力によって、該貫通孔が形成された位置の画素の信号を補間する撮像装置。 - 請求項1又は2に記載の撮像装置において、
前記撮像素子の出力に基づいて画像信号を作成する制御部をさらに備え、
前記制御部は、前記貫通孔に近接する前記受光部の出力によって、該貫通孔が形成された位置の画素の信号を補間する撮像装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2009554231A JP4902891B2 (ja) | 2008-02-22 | 2009-02-20 | 撮像装置 |
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JP2008041574 | 2008-02-22 | ||
JP2008041574 | 2008-02-22 | ||
JP2009554231A JP4902891B2 (ja) | 2008-02-22 | 2009-02-20 | 撮像装置 |
PCT/JP2009/000741 WO2009104416A1 (ja) | 2008-02-22 | 2009-02-20 | 撮像装置 |
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US7853138B2 (en) * | 2007-02-19 | 2010-12-14 | Canon Kabushiki Kaisha | Camera and photographic lens and diaphragm for starting a defocus detection without waiting for completion of an aperture opening operation |
WO2009104390A1 (ja) * | 2008-02-22 | 2009-08-27 | パナソニック株式会社 | 撮像装置 |
JP5653035B2 (ja) * | 2009-12-22 | 2015-01-14 | キヤノン株式会社 | 撮像装置、焦点検出方法、および制御方法 |
JP5623254B2 (ja) * | 2010-11-29 | 2014-11-12 | キヤノン株式会社 | 撮像装置およびその制御方法 |
JP6171273B2 (ja) * | 2012-06-21 | 2017-08-02 | リコーイメージング株式会社 | オートフォーカス装置およびデジタルカメラ |
JP6161522B2 (ja) * | 2013-11-20 | 2017-07-12 | オリンパス株式会社 | 撮像素子 |
SG10201912550RA (en) * | 2015-11-19 | 2020-02-27 | Angel Playing Cards Co Ltd | Management system for table games and substitute currency for gaming |
US10270947B2 (en) * | 2016-09-15 | 2019-04-23 | Microsoft Technology Licensing, Llc | Flat digital image sensor |
EP4060977B1 (en) | 2021-03-15 | 2023-06-14 | Axis AB | An arrangement for assessing ambient light in a video camera |
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- 2009-02-20 WO PCT/JP2009/000741 patent/WO2009104416A1/ja active Application Filing
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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 |
JP2000338393A (ja) * | 1999-05-26 | 2000-12-08 | Olympus Optical Co Ltd | 撮像装置 |
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JP2007333720A (ja) * | 2006-05-17 | 2007-12-27 | Nikon Corp | 相関演算方法、相関演算装置、焦点検出装置および撮像装置 |
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WO2009104416A1 (ja) | 2009-08-27 |
US20110001871A1 (en) | 2011-01-06 |
US8077255B2 (en) | 2011-12-13 |
JPWO2009104416A1 (ja) | 2011-06-23 |
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