JP5475237B2 - 文書照明器 - Google Patents
文書照明器 Download PDFInfo
- Publication number
- JP5475237B2 JP5475237B2 JP2008012734A JP2008012734A JP5475237B2 JP 5475237 B2 JP5475237 B2 JP 5475237B2 JP 2008012734 A JP2008012734 A JP 2008012734A JP 2008012734 A JP2008012734 A JP 2008012734A JP 5475237 B2 JP5475237 B2 JP 5475237B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- prism
- optical component
- document
- defines
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
- G02B19/0066—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED in the form of an LED array
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- 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
- H04N1/02845—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
- H04N1/02865—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 using an array of light sources or a combination of such arrays, e.g. an LED bar
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Facsimile Scanning Arrangements (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
Claims (3)
- 光源の線形アレイから発せられる光を透過させる光学部品であって、
屈折率が約1.4から約1.8の光透過部材を備え、
前記光透過部材は、
前記光源付近に配置され、少なくともひとつのプリズム群を規定する入射面と、
射出面と、
前記入射面と前記射出面の間の誘電性複合放物面集光器の一部と、
を規定し、
前記プリズム群の各プリズムの面は、前記光源の線形アレイの長手方向に沿った軸と、前記誘電性複合放物面集光器の光軸とに垂直な軸に沿って延設された複数の平面であることを特徴とする光学部品。 - 請求項1に記載の光学部品であって、
前記入射面は複数のプリズム群を規定し、各プリズム群は光源に隣接して配置され、前記入射面は隣接するプリズム群の間にギャップを規定することを特徴とする光学部品。 - 請求項2に記載の光学部品であって、
各ギャップは、前記部品内を通過する光を少なくとも部分的に反射することを特徴とする光学部品。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/657,182 | 2007-01-24 | ||
US11/657,182 US7586082B2 (en) | 2007-01-24 | 2007-01-24 | Optical element for a document illuminator |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008181129A JP2008181129A (ja) | 2008-08-07 |
JP5475237B2 true JP5475237B2 (ja) | 2014-04-16 |
Family
ID=39315027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008012734A Expired - Fee Related JP5475237B2 (ja) | 2007-01-24 | 2008-01-23 | 文書照明器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7586082B2 (ja) |
EP (1) | EP1950945B1 (ja) |
JP (1) | JP5475237B2 (ja) |
KR (1) | KR101486215B1 (ja) |
DE (1) | DE602008001447D1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7763876B2 (en) * | 2007-04-06 | 2010-07-27 | Xerox Corporation | Gloss and differential gloss measuring system |
US7764893B2 (en) * | 2008-01-31 | 2010-07-27 | Xerox Corporation | Use of customer documents for gloss measurements |
DE102014205363A1 (de) * | 2014-03-21 | 2015-09-24 | Bundesdruckerei Gmbh | Vorrichtung und Verfahren zur optischen Erfassung eines Dokuments und Verfahren zurHerstellung einer solchen Vorrichtung |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61273519A (ja) * | 1985-05-29 | 1986-12-03 | Ricoh Co Ltd | 原稿読取装置 |
US4711972A (en) * | 1985-07-05 | 1987-12-08 | Entech, Inc. | Photovoltaic cell cover for use with a primary optical concentrator in a solar energy collector |
US4898450A (en) * | 1987-08-31 | 1990-02-06 | Physical Optics Corporation | Expanded beam non-imaging fiber optic connector |
US5101285A (en) * | 1989-07-24 | 1992-03-31 | Canon Kabushiki Kaisha | Photoelectric conversion device having an improved illuminating system and information processing apparatus mounting the device |
JPH03177854A (ja) * | 1989-12-07 | 1991-08-01 | Shigenori Takaune | 複写機の光学装置 |
CA2078839A1 (en) | 1991-09-25 | 1993-03-26 | Marc Hoffman | Double refraction and total reflection solid nonimaging lens |
US5969343A (en) | 1995-08-24 | 1999-10-19 | Matsushita Electric Industrial Co., Ltd. | Linear illumination device |
US5686720A (en) * | 1995-03-02 | 1997-11-11 | Hewlett Packard Company | Method and device for achieving high contrast surface illumination |
US5727108A (en) * | 1996-09-30 | 1998-03-10 | Troy Investments, Inc. | High efficiency compound parabolic concentrators and optical fiber powered spot luminaire |
EP0953130A4 (en) * | 1997-01-13 | 2000-01-05 | Minnesota Mining & Mfg | LIGHTING DEVICE |
JPH10210217A (ja) * | 1997-01-17 | 1998-08-07 | Rohm Co Ltd | 画像読み取り装置 |
JPH11284803A (ja) * | 1998-03-27 | 1999-10-15 | Citizen Electronics Co Ltd | 線状光源ユニット |
JP2000299765A (ja) * | 1999-04-14 | 2000-10-24 | Rohm Co Ltd | 導光部材およびこれを用いた画像読み取り装置 |
JP2000358130A (ja) * | 1999-06-15 | 2000-12-26 | Rohm Co Ltd | 画像読み取り装置およびこれに用いる導光用ユニット |
JP2001077975A (ja) | 1999-09-03 | 2001-03-23 | Rohm Co Ltd | 画像読み取り装置、これに用いる導光部材および導光ユニット |
JP2001135113A (ja) * | 1999-11-08 | 2001-05-18 | Matsushita Electric Ind Co Ltd | 照明装置 |
US6939009B2 (en) * | 2001-02-06 | 2005-09-06 | Optics 1, Inc. | Compact work light with high illumination uniformity |
JP4104064B2 (ja) * | 2003-01-16 | 2008-06-18 | ローム株式会社 | 画像読み取り装置 |
US7760434B2 (en) * | 2006-08-31 | 2010-07-20 | Xerox Corporation | Document illuminator with surface lens |
-
2007
- 2007-01-24 US US11/657,182 patent/US7586082B2/en not_active Expired - Fee Related
-
2008
- 2008-01-17 DE DE602008001447T patent/DE602008001447D1/de active Active
- 2008-01-17 EP EP08100592A patent/EP1950945B1/en not_active Expired - Fee Related
- 2008-01-23 JP JP2008012734A patent/JP5475237B2/ja not_active Expired - Fee Related
- 2008-01-24 KR KR20080007641A patent/KR101486215B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE602008001447D1 (de) | 2010-07-22 |
KR101486215B1 (ko) | 2015-01-26 |
JP2008181129A (ja) | 2008-08-07 |
KR20080069929A (ko) | 2008-07-29 |
EP1950945B1 (en) | 2010-06-09 |
US7586082B2 (en) | 2009-09-08 |
US20080173799A1 (en) | 2008-07-24 |
EP1950945A1 (en) | 2008-07-30 |
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