TW200532952A - Line-illuminating device and image-scanning device incorporating the same - Google Patents
Line-illuminating device and image-scanning device incorporating the same Download PDFInfo
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- TW200532952A TW200532952A TW094104647A TW94104647A TW200532952A TW 200532952 A TW200532952 A TW 200532952A TW 094104647 A TW094104647 A TW 094104647A TW 94104647 A TW94104647 A TW 94104647A TW 200532952 A TW200532952 A TW 200532952A
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- 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
- H04N1/0282—Using a single or a few point light sources, e.g. a laser diode
- H04N1/02835—Using a single or a few point light sources, e.g. a laser diode in combination with a light guide, e.g. optical fibre, glass plate
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- 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
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- 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
- H04N1/0282—Using a single or a few point light sources, e.g. a laser diode
- H04N1/0284—Using a single or a few point light sources, e.g. a laser diode in combination with a light integrating, concentrating or diffusing cavity
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- 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
- H04N1/02885—Means for compensating spatially uneven illumination, e.g. an aperture arrangement
- H04N1/0289—Light diffusing elements, e.g. plates or filters
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- 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
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
- H04N1/031—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array the photodetectors having a one-to-one and optically positive correspondence with the scanned picture elements, e.g. linear contact sensors
- H04N1/0318—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light-source, a lens array and a photodetector array which are supported by a single-piece frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
- H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
- H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
- H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
- H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
- H04N2201/03108—Components of integral heads
- H04N2201/03112—Light source
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
- H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
- H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
- H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
- H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
- H04N2201/03108—Components of integral heads
- H04N2201/03125—Light guide upstream of the scanned picture elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
- H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
- H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
- H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
- H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
- H04N2201/03108—Components of integral heads
- H04N2201/03141—Photodetector lens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/024—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted
- H04N2201/028—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up
- H04N2201/03—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted
- H04N2201/031—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof deleted for picture information pick-up deleted deleted
- H04N2201/03104—Integral pick-up heads, i.e. self-contained heads whose basic elements are a light source, a lens and a photodetector supported by a single-piece frame
- H04N2201/03108—Components of integral heads
- H04N2201/03145—Photodetector
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Facsimile Scanning Arrangements (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
200532952 九、發明說明: 【發明所屬之技術領域】 發明領域 本杳明係有關線照明裝置及組裝有該線照明裝置之接 觸型及縮小型的影像讀取裝置(影像感測器)。 發明背景
10 傳真裝置、影印機、影像掃描裝置等影像讀取裝置, 係具備有可跨主_範圍^對雜面進行照明之線 照明裝置。該線照明裝置係如專利文獻1所示,將成棒狀或 板狀之透明導光體收納於盒體内,並且在該透明導光體之 端部配置發光單元,且讓由料體之端面人射之光在内面 反射之同時並經由該透明導光體露出於盒體之長度方向上 的出射面而出射。 15又’專利讀2巾,針對為進行將前錢㈣光體組裝 到盒體内時之對位動作提出〜 万案,即,在盒體及透明導 光體其中一者設置凹部,而在另-者設置可卡止住該凹部 之凸部。 [專利文獻1 ]日本專利公開公報特開平8 · i 63 3 2〇號 2〇 [專利文獻2]日本專利公開公報特開平10-126581號(第 (0025)、(〇〇36)段落以及第3、6圖) 【發明内容】 發明概要 [發明欲解決之問題] 5 200532952 第6 (a)圖係例示線照明裝置中光源單元側的端部之截 面圖,且係例示並未產生間隙的理想狀態圖。然而,由於 透明導光體係藉由將聚烯系等之樹脂材料喷射成形而製得 者,故厚度較厚部分的冷卻較其他部分慢,因而整體產生 5 一彎曲度。若將此種具彎曲度的導光體收納於盒體中,如 第6(b)圖所示,導光體之端部與光源單元或盒體内側面之間 就會產生間隙。 若導光體產生彎曲度,縱或將該導光體收納於盒體 内,也會有如下問題,即譬如導光體的端部由盒體跑出, 10 或者是因彎曲度而存有間隙,致使光量不均。又,需花費 許多時間才能藉由檢查發現該彎曲現象。進而,專利文獻2 所揭示之凹凸卡合部僅係單純地用以進行導光體與盒體間 之對位者,並無法有效防止導光體端部由盒體露出或間隙 產生等問題。 15 [用以解決課題之手段] 為解決前述課題,本發明之線照明裝置,係以成棒狀 或板狀之透明導光體其出射面可露出的方式而將該透明導 光體收納於盒體内,且該透明導光體其中至少一端配置有 光源單元,並使由該透明導光體之端面入射之源自前述光 20 源單元的照射光在内面反射之同時由前述出射面出射者, 且前述光源單元或盒體上設有位在前述透明導光體之出射 面上的肋部。 前述肋部可與盒體一體形成,或與盒體分別形成而後 再組裝成一體。當肋部與盒體係分別形成時,易於變更肋 6 200532952 部形狀之設計。 又,盒體及肋部宜為白色。當盒體及肋部為白色時可 獲致均勻之照度。進而,本發明中,盒體對導光體之固定 係以盒體其中之三個面或二個面來進行時尤為有效。以四 5 個面來進行固定時,雖不易產生因導光體彎曲而脫落的問 題,但將導光體嵌入盒體時,導光體其中一端勢必得在邊 摩擦盒體之狀態下才可邊將該導光體壓入盒體中,且因盒 體與導光體間之滑動而使得透鏡表面產生損傷,導致發生 擴散(散射diffusion)現象。 10 作為線照明裝置,其亦可構造成光源單元不僅配置於 導光體其中一端側,而是配置於兩端。又,作為組裝有前 述線照明裝置的影像讀取裝置,組裝有二組線照明裝置之 態樣亦包含在本發明之範疇内。 [發明之功效] 15 依本發明之線照明裝置,縱或未高精確度地製造透明 導光體及盒體,亦可確實地將透明導光體收納於盒體内, 又可確保位置精確度。 特別是,即便透明導光體產生有若干彎曲度,但由於 該透明導光體係以業經肋部矯正該彎曲度之狀態下而固定 20 於盒體内,因此透明導光體之端部與光源單元或盒體之間 不易產生間隙。又,就算產生些許間隙,藉由肋部就可防 止散射光洩漏至外部,由該結果,線照明裝置之長度方向 的光量不均現象可消失,並解決光量不足之問題。 圖式簡單說明 7 200532952 第1圖係組裝有本發明之線照明裝置的影像讀取裝置 的截面圖。 第2圖係同一線照明裝置之斜視圖。 第3圖係光源單元的斜視圖。 5 第4圖係同一線照明裝置中光源單元側之端部的截面 圖。 第5圖係沿同一線照明裝置之長度方向的截面圖。 第6(a)圖係例示習知之線照明裝置中光源單元側之端 部的截面圖,且係例示未產生有間隙之狀態圖,第6(b)圖係 10 例示同一端部產生有間隙之狀態圖。 【實施方式3 較佳實施例之詳細說明 以下參照附圖說明本發明之實施態樣。第1圖係組裝有 本發明之線照明裝置的影像讀取裝置的截面圖,第2圖係同 15 一線照明裝置之斜視圖,第3圖係光源單元的斜視圖,第4 圖係同一線照明裝置中光源單元側之端部的截面圖,第5圖 係沿同一線照明裝置之長度方向的截面圖。 影像讀取裝置係將線照明裝置10配置在凹部la上,該 凹部la係形成於框體1上者,又,在底部裝配有具光電變換 20 元件(線影像感測器)2之感測器基板3,進而,框體1之中央 部配設有等倍成像用之柱狀透鏡陣列4,該柱狀透鏡陣列4 係用以讓源自線照明裝置10之照射光中來自原稿的反射光 朝前述光電變換元件2聚光者。 線照明裝置10,係將成棒狀或板狀之丙烯酸樹脂製之 8 200532952 這明‘光體11裝填至白色盒體12内,該盒體12其中一端裝 設有光源單元13。透明導光體„具有二種類之反射曲面 11c、lid。該等反射曲面係與導光體之長度方向垂直的方 向上之截面形狀為橢圓弧或拋物線,且源自面lib之光係由 露出盒體12之出射面iia而出射。為使出射光強度均等,面 11b上亦可形成光散射圖案。 透明導光體之形狀並不限於上述者,譬如亦可為如下 所述者,即,對與長度方向垂直的方向上之截面形狀為略 1/4橢圓的長軸側前端進行磨邊倒角(chamfering),且該倒角 面包含橢圓的焦點,進而該倒角面形狀係基本形狀為矩 形’且角部為45。倒角,並以該面作為出射面na之形狀。 又,圖式中雖例示配置一個線照明裝置1〇者,但亦可 以柱狀透鏡陣列4為中心而左右各配置一個線照明裝置1〇。 光源早元13係將導線端子15…以及板狀導線框彼入樹 脂模14而成形製得,並設有用以搭載發光元件(LED)16之窗 孔17 〇 前述樹脂模14之一部分上一體地形成有肋部14a。該肋 部14a係設於透明導光體11之出射面11a所在的位置上,且 其長向方向之尺寸以0.5〜3mm為適當。若較〇.5mm短,恐 有因彎曲而使得透明導光體11之端部由盒體露出之虞,亦 無法獲致抑制光量不均之效果。若較3mm長,安裝元件時 會有困難性,且因材料長度增加而使得成本提高。 又,與設置光源單元13側相對之側上的盒體12端部 上,亦一體地形成有肋部12a。該肋部12a亦與前述肋部14a 9 200532952 相同地設於透明導光體11之出射面lla所在的位置上,且其 長向方向之尺寸以0.5〜3mm為適當。又,由於設有肋部12a 之側的端部上並無光源單元,故有光量減少之虞。因此, 亦可讓肋部12a較肋部14a短,俾減少覆蓋出射面lla之面 5 積,以謀求光量之均等化。 本發明之線照明裝置及影像讀取裝置係可有效地應用 在影印機、傳真機等。 【圖式簡單說明】 • 第1圖係組裝有本發明之線照明裝置的影像讀取裝置 10 的截面圖。 第2圖係同一線照明裝置之斜視圖。 第3圖係光源單元的斜視圖。 第4圖係同一線照明裝置中光源單元側之端部的截面 圖。 15 第5圖係沿同一線照明裝置之長度方向的截面圖。 第6(a)圖係例示習知之線照明裝置中光源單元側之端 ® 部的截面圖,且係例示未產生有間隙之狀態圖,第6(b)圖係 例示同一端部產生有間隙之狀態圖。 【主要元件符號說明】 1.. .影像讀取裝置之框體 4…柱狀透鏡陣列 la...凹部 10…線照明裝置 2.. .光電變換元件(線影像感測 11…透明導光體 器) lla···出射面 3…感測器基板 12…白色盒體 10 200532952 12a、14a...肋部 13…光源單元 14…樹脂模 15.. .導線端子 16…發光元件(LED) 17.. .窗孔
Claims (1)
- 200532952 十、申請專利範圍: 1. 一種線照明裝置,係以成棒狀或板狀之透明導光體其出 射面可露出的方式而將該透明導光體收納於盒體内,且 該透明導光體其中至少一端配置有光源單元,並使由該 5 透明導光體之端面入射之源自前述光源單元的照射光 在内面反射之同時由前述出射面出射者, 前述光源單元及盒體上設有位在前述透明導光體 之出射面上的肋部。 ® 2.如申請專利範圍第1項之線照明裝置,其中前述肋部係 10 與盒體一體形成,或與盒體分別形成而後再組裝成一 體。 3. —種影像讀取裝置,係包含有: 線照明裝置,係如申請專利範圍第1或2項所載者; 線影像感測器,係由光電變換元件組成者;及 15 透鏡陣列,係用以使源自前述線照明裝置之照射光 中來自原稿的反射光朝前述線照明裝置聚光者。 12
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2004077094A JP2005269108A (ja) | 2004-03-17 | 2004-03-17 | ライン照明装置およびライン照明装置を組み込んだ画像読取装置 |
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TW200532952A true TW200532952A (en) | 2005-10-01 |
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Application Number | Title | Priority Date | Filing Date |
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TW094104647A TW200532952A (en) | 2004-03-17 | 2005-02-17 | Line-illuminating device and image-scanning device incorporating the same |
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US (1) | US20050206800A1 (zh) |
JP (1) | JP2005269108A (zh) |
CN (1) | CN1671171A (zh) |
TW (1) | TW200532952A (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106161863A (zh) * | 2015-05-14 | 2016-11-23 | 罗姆股份有限公司 | 图像传感器组件 |
TWI563305B (zh) * | 2011-10-25 | 2016-12-21 | Enplas Corp | |
CN114901994A (zh) * | 2020-01-22 | 2022-08-12 | 株式会社利富高 | Led照明装置 |
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WO2007080798A1 (ja) * | 2006-01-10 | 2007-07-19 | Nippon Sheet Glass Company, Limited | 導光体、照明装置および画像読取装置 |
JP2007299775A (ja) * | 2006-04-03 | 2007-11-15 | Nichia Chem Ind Ltd | 発光ユニット及び照明装置 |
EP2395738B1 (en) * | 2007-07-31 | 2016-03-23 | Samsung Electronics Co., Ltd. | Multi-functional device having scanner module and image scanning apparatus employing the scanner module |
EP2521346A4 (en) * | 2009-12-28 | 2015-07-29 | Canon Components Kk | CONTACT IMAGE SENSOR UNIT AND PICTURE READER THEREWITH |
CN101949509A (zh) * | 2010-08-20 | 2011-01-19 | 威海华菱光电有限公司 | 图像读取装置用照明光源 |
DE112014002392T5 (de) * | 2013-05-13 | 2016-03-03 | Panasonic Intellectual Property Management Co., Ltd. | Beleuchtungsvorrichtung |
JP6191947B2 (ja) * | 2013-05-13 | 2017-09-06 | パナソニックIpマネジメント株式会社 | 照明装置 |
JP1553417S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553847S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553414S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553846S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553848S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553412S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553413S (zh) * | 2015-06-18 | 2016-07-11 | ||
JP1553845S (zh) * | 2015-06-18 | 2016-07-11 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US6333779B1 (en) * | 1998-12-24 | 2001-12-25 | Canon Kabushiki Kaisha | Illumination apparatus using light guide |
US6714323B1 (en) * | 1999-06-02 | 2004-03-30 | Rohm Co., Ltd. | Image reading apparatus and light conductor used for the same |
TW503646B (en) * | 2000-03-16 | 2002-09-21 | Nippon Sheet Glass Co Ltd | Line illuminating device |
JP2001343531A (ja) * | 2000-05-30 | 2001-12-14 | Canon Inc | 照明装置、この照明装置を有するイメージセンサーおよびこのイメージセンサーを用いた画像読取装置ならびに情報処理システム |
US20020114152A1 (en) * | 2001-02-21 | 2002-08-22 | Kouzou Fujino | Light-guide plate, area light source apparatus, and image reading apparatus |
TW573428B (en) * | 2001-03-15 | 2004-01-21 | Canon Kk | Image reading apparatus and illumination apparatus |
-
2004
- 2004-03-17 JP JP2004077094A patent/JP2005269108A/ja active Pending
-
2005
- 2005-02-14 US US11/057,652 patent/US20050206800A1/en not_active Abandoned
- 2005-02-17 TW TW094104647A patent/TW200532952A/zh unknown
- 2005-03-17 CN CNA2005100551429A patent/CN1671171A/zh active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI563305B (zh) * | 2011-10-25 | 2016-12-21 | Enplas Corp | |
CN106161863A (zh) * | 2015-05-14 | 2016-11-23 | 罗姆股份有限公司 | 图像传感器组件 |
CN114901994A (zh) * | 2020-01-22 | 2022-08-12 | 株式会社利富高 | Led照明装置 |
CN114901994B (zh) * | 2020-01-22 | 2024-05-07 | 株式会社利富高 | Led照明装置 |
Also Published As
Publication number | Publication date |
---|---|
US20050206800A1 (en) | 2005-09-22 |
JP2005269108A (ja) | 2005-09-29 |
CN1671171A (zh) | 2005-09-21 |
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