JP2008524709A - ハンドヘルド記号リーダ照明ディフューザ - Google Patents
ハンドヘルド記号リーダ照明ディフューザ Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
- G06K7/10732—Light sources
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10712—Fixed beam scanning
- G06K7/10722—Photodetector array or CCD scanning
- G06K7/10742—Photodetector array or CCD scanning including a diffuser for diffusing the light from the light source to create substantially uniform illumination of the target record carrier
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10881—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices constructional details of hand-held scanners
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- Computer Vision & Pattern Recognition (AREA)
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Abstract
Description
本発明は、画像取得デバイス用の照明(イルミネーション)に関し、特に、工業用識別コードを読み出すために使用される画像取得デバイス用の照明に関する。
機械視覚システムは、画像取得デバイスを使用する。該画像取得デバイスは、とらえた対象物(subject)上における情報を引き出すカメラセンサを含む。従って、該システムは、プログラムされた意志決定及び/又は識別機能を実施するための様々なアルゴリズムに従って、この情報を解釈する。可視光及びほぼ可視光の範囲内において、ある画像が、センサによって最も効果的に取得されるためには、前記対象物は、適切に光が照らされなければならない。
図1は、ハンドヘルド動作用に構成された走査システム101を示す。1つの例示的なハンドヘルド走査機器、すなわちハンドピース102が提供されている。該ハンドピース102は、グリップ部104と本体部分106とを含む。本明細書内において鎖線で示され且つ記載された画像形成システム151は、制御されることが可能であり、オンボードの組み込みプロセッサ109に画像データを導くことが可能である。このプロセッサに、走査ソフトウェアアプリケーション113を含めることができる。該走査ソフトウェアアプリケーション113によって、光が制御され、画像が取得され、及び画像データが利用可能な情報(例えば、バーコード画像から導き出された英数字の文字列)に解釈される。デコードされた情報を、ケーブル111を介して、ディスプレイ114、キーボード116、及びマウス118を(例えば)有するPCか又は他のデータ記憶装置112に導くことができ、該デコードされた情報は、格納されることが可能であり、適切なアプリケーション121を用いて更に処理されることが可能である。代替的には、ケーブル111を、走査機器内のインターフェースと、コンピュータ112内の適切なインターフェースとに直接的に接続することができる。この場合には、コンピュータベースのアプリケーション121が、様々な画像解釈及び光制御機能を必要とされる時に実行する。組み込みプロセッサか、コンピュータか、又は他のプロセッサに対する、ハンドヘルド走査機器の厳密な構成は、大いに変更可能である。例えば、ケーブル111が存在しない構成において、ワイヤレス相互接続を提供することができる。同様に、図示されたマイクロコンピュータを、オンボードプロセッサか又は(個人情報端末(personal digital assistant)か又は他の小型のコンピューティングデバイスのような)小型化された処理ユニットを含む別の処理デバイスに置き換えることができる。
Claims (20)
- 目標物上の記号を撮像するための装置であって、
撮像器を有するハンドヘルドポータブル撮像システムと、
前記撮像器と対象とする領域との間に配置されたレンズであって、該対象とする領域は、前記目標物上の前記記号の意図される位置にあり、該レンズと該撮像器とが、視野と光軸とを画定することからなる、レンズと、
前記対象とする領域に向けて照明を導く、前記レンズ付近の照明器と、
同心円状に前記光軸と位置合わせされた、先細りにされた半透過性のディフューザであって、前記レンズの近傍の前記視野を取り囲む第1の端部と、前記対象とする領域の近傍の前記視野を取り囲む第2の端部とを有することからなる、ディフューザ
とを備える、装置。 - 前記先細りにされた半透過性のディフューザが、ポリメチル・メタクリレートからなる、請求項1に記載の装置。
- 前記先細りにされた半透過性のディフューザが、射出成形プロセスにおいて製造される、請求項2に記載の装置。
- 前記先細りにされた半透過性のディフューザが、円錐形の形状を有する、請求項1に記載の装置。
- 前記先細りにされた半透過性のディフューザが、円筒形の形状を有する、請求項1に記載の装置。
- 同心円状に前記光軸と位置合わせされ、且つ、前記先細りにされた半透過性のディフューザを取り囲む、暗視野照明光パイプと、
前記暗視野照明光パイプ内へと照明を導く暗視野照明器
とを更に備える、請求項1に記載の装置。 - 前記先細りにされた半透過性のディフューザが、リムーバブルに取り付けられている、請求項6に記載の装置。
- 前記先細りにされた半透過性のディフューザが、第1の色特性を有し、前記照明器は、前記第1の色特性に類似した色特性を有する照明を放射し、前記暗視野照明器は、第2の色特性を有する照明を放射することからなる、請求項6に記載の装置。
- 前記第1の色特性が青色であり、前記第2の色特性が赤色である、請求項8に記載の装置。
- 少なくとも1つの色特性が赤外である、請求項8に記載の装置。
- 前記ディフューザに提供され且つ該ディフューザと前記対象とする領域との間に配置された光吸収フィルタを更に備える、請求項6に記載の装置。
- 前記照明器が、複数の選択的に作動させられる照明器を更に含む、請求項1に記載の装置。
- 前記複数の選択的に作動させられる照明器が、北−南方向、及び東−西方向の選択的な動作を有する、請求項12に記載の装置。
- 目標物上の記号を撮像するための装置であって、
撮像器を有するハンドヘルドポータブル撮像システムと、
前記撮像器と対象とする領域との間に配置されたレンズであって、該対象とする領域は、前記目標物上の前記記号の意図される位置にあり、該レンズと該撮像器とが、視野と光軸とを画定することからなる、レンズと、
前記対象とする領域に向けて照明を導く、前記レンズ付近の照明器と、
前記レンズと前記照明器とを取り囲む第1の端部と、前記対象とする領域の近傍の前記視野を取り囲む第2の端部とを有する、暗視野照明光パイプであって、該第2の端部が、暗視野照明を前記目標物に向かって低角で放射するよう構成されることからなる、暗視野照明光パイプと、
同心円状に前記光軸と位置合わせされ且つ前記暗視野照明光パイプ内において配置された、先細りにされた半透過性のディフューザであって、前記レンズの近傍の前記視野を取り囲む第1の端部と、前記目標物の近傍の前記視野を取り囲む第2の端部とを有することからなる、ディフューザ
とを備える、装置。 - 前記先細りにされた半透過性のディフューザが、前記暗視野照明を拡散させない、請求項14に記載の装置。
- 前記先細りにされた半透過性のディフューザが、透過性の光学特性を有し、該半透過性のディフューザが、前記暗視野照明の前に配置されていることからなる、請求項15に記載の装置。
- 前記先細りにされたディフューザがリムーバブルである、請求項14に記載の装置。
- 前記暗視野照明を提供するよう構成された、前記暗視野照明光パイプの前記第2の端部における複数の暗視野照明器を、更に含む、請求項14に記載の装置。
- 目標物上の記号を撮像するための装置であって、
撮像器を有するハンドヘルドポータブル撮像システムと、
前記撮像器と対象とする領域との間に配置されたレンズであって、該対象とする領域は、前記目標物上の前記記号の意図された位置にあり、該レンズと該撮像器とが、視野と光軸とを画定することからなる、レンズと、
前記対象とする領域に向けて照明を導く、前記レンズ付近の第1の照明器と、
前記対象とする領域から反射された少なくとも一部の照明を前記レンズ内へと導くよう構成された、前記光軸に位置合わせされた前記レンズの前面に配置された半反射ミラーと、
前記第2の照明器からの少なくとも一部の前記照明が前記対象とする領域に向かって導かれるように、前記半反射ミラーにおける照明を導く第2の照明器と、
前記第2の照明器と前記半反射ミラーとの間に配置された第1のディフューザと、
同心円状に前記光軸と位置合わせされた、先細りにされた半透過性のディフューザであって、前記レンズの近傍の前記視野を取り囲む第1の端部と、前記対象とする領域の近傍の前記視野を取り囲む第2の端部とを有することからなる、先細りにされた半透過性のディフューザ
とを備える、装置。 - 前記装置を、前記対象とする領域における前記視野全体にわたって照明の一様な分散を生成するよう構成するために、前記第1の照明器が第1の強度を有し、及び前記第2の照明器が第2の強度を有することからなる、請求項19に記載の装置。
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US11/014,478 US7617984B2 (en) | 2004-12-16 | 2004-12-16 | Hand held symbology reader illumination diffuser |
US11/014,478 | 2004-12-16 | ||
PCT/US2005/044452 WO2006065619A1 (en) | 2004-12-16 | 2005-12-08 | Hand held symbology reader illumination diffuser |
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US20060133757A1 (en) | 2006-06-22 |
US8286878B2 (en) | 2012-10-16 |
US9361495B2 (en) | 2016-06-07 |
JP2013137795A (ja) | 2013-07-11 |
JP5253812B2 (ja) | 2013-07-31 |
US7617984B2 (en) | 2009-11-17 |
JP5615952B2 (ja) | 2014-10-29 |
US20170132441A1 (en) | 2017-05-11 |
WO2006065619A1 (en) | 2006-06-22 |
US20100020539A1 (en) | 2010-01-28 |
US20130161393A1 (en) | 2013-06-27 |
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