JP4908828B2 - 文書照明装置 - Google Patents
文書照明装置 Download PDFInfo
- Publication number
- JP4908828B2 JP4908828B2 JP2005333633A JP2005333633A JP4908828B2 JP 4908828 B2 JP4908828 B2 JP 4908828B2 JP 2005333633 A JP2005333633 A JP 2005333633A JP 2005333633 A JP2005333633 A JP 2005333633A JP 4908828 B2 JP4908828 B2 JP 4908828B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- illumination
- light guide
- document
- cavity
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
- H04N1/02855—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array in combination with a light guide, e.g. optical fibre, glass plate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02895—Additional elements in the illumination means or cooperating with the illumination means, e.g. filters
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Facsimile Heads (AREA)
Description
を特徴とする。
Claims (3)
- 文書照明装置であって、
その内部を進む光をその表面でその内部に向うように反射する光導体と、
前記光導体の内部に形成され、その壁の一部に少なくとも1つの不透明で反射性の内張りである遮光部が設けられる空洞と、
前記空洞の内側に配置され、前記光導体の内部に光を直接放射する発光ダイオードと、を有し、
前記光導体は、面取り形状の平面で、前記発光ダイオードから放射される光が通り抜ける照明光出口部と、
前記照明光出口部を通り抜ける光の進む方向と反対方向にある前記照明光出口部の後壁で、かつ、前記光導体の前記照明光出口部を通り抜ける光の進む方向と反対方向の面である後面に設けられ、前記発光ダイオードから放射された光を前記照明出口部に直接向かうように前記光導体の内部に向って反射する少なくとも1つの反射部材と、を含み、
前記空洞は、前記後面側に形成された穴部であり、
前記遮光部は、照明光出口部を除く前記光導体の界面で全内部反射して進まない光線を遮断するために前記空洞の中央部分に設けられたものであり、
前記照明光出口部を通り抜けた光が文書を照明すること、
を特徴とする文書照明装置。 - 請求項1に記載の文書照明装置であって、
前記光導体は、いずれか1つの側面に1つまたは複数の光学的切込みが形成されていること、
を特徴とする文書照明装置。 - 文書照明装置であって、
その内部を進む光をその表面でその内部に向うように反射する光導体と、
前記光導体の内部に形成され、その壁の一部に少なくとも1つの不透明で反射性の内張りである遮光部が設けられる空洞と、
前記空洞の内側に配置され、前記光導体の内部に光を直接放射する発光ダイオードと、を有し、
前記光導体は、面取り形状の平面で、前記発光ダイオードから放射される光が通り抜ける照明光出口部と、前記照明光出口部を通り抜ける光の進む方向と反対方向にある前記照明光出口部の後壁で、かつ、前記光導体の前記照明光出口部を通り抜ける光の進む方向と反対方向の面である後面に設けられ、前記発光ダイオードから放射された光を前記照明出口部に直接向かうように前記光導体の内部に向って反射する少なくとも1つの反射部材と、を含み、前記照明光出口部を通り抜けた光が文書を照明する光伝送素子と、
前記文書からの反射画像を受け取り、前記反射画像をセンサからなる光感知装置に結像させることで前記画像を電子信号へと変換するように構成された結像システムと、
前記電子信号をデジタル・データとして記録するための記録装置と、
を有し、
前記空洞は、前記後面側に形成された穴部であり、
前記遮光部は、照明光出口部を除く前記光導体の界面で全内部反射して進まない光線を遮断するために前記空洞の中央部分に設けられたものであること、
を特徴とする文書照明装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/995,462 US7746520B2 (en) | 2004-11-23 | 2004-11-23 | Document illuminator |
US10/995,462 | 2004-11-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006148916A JP2006148916A (ja) | 2006-06-08 |
JP4908828B2 true JP4908828B2 (ja) | 2012-04-04 |
Family
ID=36460756
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005333633A Expired - Fee Related JP4908828B2 (ja) | 2004-11-23 | 2005-11-18 | 文書照明装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7746520B2 (ja) |
JP (1) | JP4908828B2 (ja) |
CN (1) | CN1783934B (ja) |
BR (1) | BRPI0505079A (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7593143B2 (en) * | 2005-03-31 | 2009-09-22 | Xerox Corporation | Compound curved concentrator based illuminator |
WO2006116518A2 (en) * | 2005-04-28 | 2006-11-02 | Illumination Management Solutions, Inc. | Led that generates a high-aspect ratio light pattern |
US7760434B2 (en) * | 2006-08-31 | 2010-07-20 | Xerox Corporation | Document illuminator with surface lens |
US7864381B2 (en) * | 2007-03-20 | 2011-01-04 | Xerox Corporation | Document illuminator with LED-driven phosphor |
CN102143300B (zh) * | 2010-01-29 | 2013-03-06 | 致伸科技股份有限公司 | 扫描装置 |
US8335999B2 (en) * | 2010-06-11 | 2012-12-18 | Orbotech Ltd. | System and method for optical shearing |
Family Cites Families (30)
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US3774021A (en) | 1972-05-25 | 1973-11-20 | Bell Telephone Labor Inc | Light emitting device |
JPS5425093A (en) * | 1977-07-23 | 1979-02-24 | Muubiru Ag Fuyua Mashinen Unto | Pulleying device equipped with device for tightening rope |
US4342908A (en) | 1980-08-28 | 1982-08-03 | Westinghouse Electric Corp. | Light distribution system for optical encoders |
US5153750A (en) | 1989-05-23 | 1992-10-06 | Ricoh Company, Ltd. | Image reading apparatus having a contact type image sensor device |
JP3073045B2 (ja) | 1991-04-26 | 2000-08-07 | キヤノン株式会社 | 原稿画像読取装置 |
US5257340A (en) * | 1992-06-01 | 1993-10-26 | Eastman Kodak Company | Linear coated core/clad light source/collector |
US6268600B1 (en) * | 1994-08-01 | 2001-07-31 | Matsushita Electric Industrial Co., Ltd. | Linear illumination device |
US6236470B1 (en) | 1994-12-19 | 2001-05-22 | Xerox Corporation | Reflector and light source registration device for a document illuminator |
JPH08321918A (ja) | 1995-03-22 | 1996-12-03 | Canon Inc | 導光体、該導光体を有する照明装置及び該照明装置を有する情報処理装置 |
US5804818A (en) * | 1996-01-30 | 1998-09-08 | Eastman Kodak Company | Coated internally reflecting optical element |
KR200153391Y1 (ko) | 1996-05-15 | 1999-08-02 | 윤종용 | 모사전송기의 독취원고 이송장치 |
JP3453495B2 (ja) | 1996-07-26 | 2003-10-06 | キヤノン株式会社 | 密着型イメージセンサ及び画像読取装置 |
JP2999431B2 (ja) * | 1996-08-30 | 2000-01-17 | 日本板硝子株式会社 | ライン照明装置 |
US6473554B1 (en) | 1996-12-12 | 2002-10-29 | Teledyne Lighting And Display Products, Inc. | Lighting apparatus having low profile |
US6046826A (en) | 1997-08-25 | 2000-04-04 | Avision Inc. | Light source for film scanner |
US6224237B1 (en) * | 1998-04-16 | 2001-05-01 | Honeywell International Inc. | Structure for achieving a linear light source geometry |
US6469808B1 (en) | 1998-05-15 | 2002-10-22 | Rohm Co., Ltd. | Image reading apparatus and illuminator used for the same |
JP2000021221A (ja) * | 1998-07-06 | 2000-01-21 | Brother Ind Ltd | 線状照明装置 |
US6139174A (en) * | 1998-08-25 | 2000-10-31 | Hewlett-Packard Company | Light source assembly for scanning devices utilizing light emitting diodes |
JP4261659B2 (ja) * | 1998-12-16 | 2009-04-30 | シチズン電子株式会社 | 面状光源装置 |
US6333779B1 (en) * | 1998-12-24 | 2001-12-25 | Canon Kabushiki Kaisha | Illumination apparatus using light guide |
JP2001111772A (ja) | 1999-10-07 | 2001-04-20 | Mitsubishi Electric Corp | ライン光源およびこれを用いたイメージセンサ |
US6646769B1 (en) | 2000-06-21 | 2003-11-11 | Umax Data Systems, Inc. | Light source mechanism for an imaging apparatus |
DE10102586A1 (de) | 2001-01-20 | 2002-07-25 | Philips Corp Intellectual Pty | Beleuchtungseinrichtung mit punktförmigen Lichtquellen |
US6598998B2 (en) | 2001-05-04 | 2003-07-29 | Lumileds Lighting, U.S., Llc | Side emitting light emitting device |
TWI221385B (en) | 2001-05-31 | 2004-09-21 | Mustek Systems Inc | CCD type scanner powered by a serial bus |
JP4087681B2 (ja) * | 2002-10-29 | 2008-05-21 | 株式会社日立製作所 | 照明装置及びそれを用いた表示装置 |
JPWO2005001528A1 (ja) | 2003-06-25 | 2006-11-02 | 日本板硝子株式会社 | 導光体および画像読取装置 |
GB2408846A (en) * | 2003-12-02 | 2005-06-08 | Sung Tao Ho | LED lamp tube |
US7593143B2 (en) | 2005-03-31 | 2009-09-22 | Xerox Corporation | Compound curved concentrator based illuminator |
-
2004
- 2004-11-23 US US10/995,462 patent/US7746520B2/en active Active
-
2005
- 2005-11-18 JP JP2005333633A patent/JP4908828B2/ja not_active Expired - Fee Related
- 2005-11-22 CN CN200510127000.9A patent/CN1783934B/zh not_active Expired - Fee Related
- 2005-11-23 BR BRPI0505079-0A patent/BRPI0505079A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20060109675A1 (en) | 2006-05-25 |
JP2006148916A (ja) | 2006-06-08 |
US7746520B2 (en) | 2010-06-29 |
BRPI0505079A (pt) | 2006-07-04 |
CN1783934B (zh) | 2014-09-17 |
CN1783934A (zh) | 2006-06-07 |
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