JP4165339B2 - 光学情報読取装置 - Google Patents
光学情報読取装置 Download PDFInfo
- Publication number
- JP4165339B2 JP4165339B2 JP2003296331A JP2003296331A JP4165339B2 JP 4165339 B2 JP4165339 B2 JP 4165339B2 JP 2003296331 A JP2003296331 A JP 2003296331A JP 2003296331 A JP2003296331 A JP 2003296331A JP 4165339 B2 JP4165339 B2 JP 4165339B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- reading
- optical member
- distance
- light receiving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- G06K7/10554—Moving beam scanning
- G06K7/10594—Beam path
- G06K7/10603—Basic scanning using moving elements
- G06K7/10613—Basic scanning using moving elements by rotation, e.g. polygon
-
- 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
- G06K7/10554—Moving beam scanning
- G06K7/10594—Beam path
- G06K7/10683—Arrangement of fixed elements
- G06K7/10702—Particularities of propagating elements, e.g. lenses, mirrors
Description
Claims (4)
- 読取口を有する本体ケース内に、結像レンズを含む結像光学部と、受光センサとを具備してなり、光学情報が記された読取対象からの光を前記読取口から入射し、前記結像光学部を介して前記受光センサ上に結像させるようにした光学情報読取装置であって、
前記結像光学部は、前記結像レンズと受光センサとを結ぶ光軸により貫かれる位置に該光軸と直角な軸回りに回転可能に取付けられ複数の定められた回転位置に停止されることによって前記光軸の貫く厚みが変化するように構成された透光性を有する光学部材を備え、
前記光学部材は、その外周面に回転中心を挟んで対向する平行な面を複数組有する角柱状に形成され、定められた回転位置においてこの光学部材の停止回転位置を変更することによって対向する平行な面の一組が前記光軸と直角に交わり、合焦点距離が変化するように構成されるとともに、
角柱状の前記光学部材は、基本形状から若干突出した対向する平行な面組と、基本形状から若干窪んだ対向する平行な面組とを有していることを特徴とする光学情報読取装置。 - 前記光学部材の対向する平行な面は、回転中心に対して対称な位置及び形状に設けられていることを特徴とする請求項1記載の光学情報読取装置。
- 前記本体ケースと読取対象との間の距離を計測する距離測定手段を備えることを特徴とする請求項1または2に記載の光学情報読取装置。
- 前記距離測定手段の測定結果に応じて前記光学部材を所定の停止回転位置に回転させる駆動手段を備えることを特徴とする請求項3記載の光学情報読取装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003296331A JP4165339B2 (ja) | 2003-08-20 | 2003-08-20 | 光学情報読取装置 |
US10/921,092 US7448549B2 (en) | 2003-08-20 | 2004-08-19 | Optical information reader and method of reading optical information |
CN200410057642.1A CN1286051C (zh) | 2003-08-20 | 2004-08-20 | 光学信息读取器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003296331A JP4165339B2 (ja) | 2003-08-20 | 2003-08-20 | 光学情報読取装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005063379A JP2005063379A (ja) | 2005-03-10 |
JP4165339B2 true JP4165339B2 (ja) | 2008-10-15 |
Family
ID=34191143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003296331A Expired - Fee Related JP4165339B2 (ja) | 2003-08-20 | 2003-08-20 | 光学情報読取装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7448549B2 (ja) |
JP (1) | JP4165339B2 (ja) |
CN (1) | CN1286051C (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7201318B2 (en) * | 2004-03-11 | 2007-04-10 | Symbol Technologies, Inc. | Optical adjustment for increased working range and performance in electro-optical readers |
JP5495826B2 (ja) * | 2010-02-02 | 2014-05-21 | 株式会社ブリヂストン | タイヤ選別装置 |
JP5083676B2 (ja) * | 2010-02-16 | 2012-11-28 | 株式会社デンソーウェーブ | 読取システム、及び光学的情報読取装置 |
DK2498113T3 (da) * | 2011-03-10 | 2013-05-13 | Sick Ag | Anordning til fokusindstilling til en kodelæser |
DE102015100718B3 (de) * | 2015-01-20 | 2015-10-29 | Sick Ag | Verstellvorrichtung für ein optisches Element |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0341585A (ja) | 1989-07-07 | 1991-02-22 | Sumitomo Electric Ind Ltd | バーコードリーダ |
JPH0398181A (ja) | 1989-09-11 | 1991-04-23 | Sumitomo Electric Ind Ltd | 記号読取装置 |
JPH04126446A (ja) | 1990-09-18 | 1992-04-27 | Canon Inc | 画像読取装置 |
US6179208B1 (en) * | 1997-01-31 | 2001-01-30 | Metanetics Corporation | Portable data collection device with variable focusing module for optic assembly |
JPH10247215A (ja) | 1997-03-04 | 1998-09-14 | Asahi Optical Co Ltd | 光路長可変素子 |
US6066857A (en) | 1998-09-11 | 2000-05-23 | Robotic Vision Systems, Inc. | Variable focus optical system |
-
2003
- 2003-08-20 JP JP2003296331A patent/JP4165339B2/ja not_active Expired - Fee Related
-
2004
- 2004-08-19 US US10/921,092 patent/US7448549B2/en not_active Expired - Fee Related
- 2004-08-20 CN CN200410057642.1A patent/CN1286051C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7448549B2 (en) | 2008-11-11 |
CN1591460A (zh) | 2005-03-09 |
US20050040237A1 (en) | 2005-02-24 |
CN1286051C (zh) | 2006-11-22 |
JP2005063379A (ja) | 2005-03-10 |
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