JPS6135062A - Optical picture reader - Google Patents
Optical picture readerInfo
- Publication number
- JPS6135062A JPS6135062A JP15540084A JP15540084A JPS6135062A JP S6135062 A JPS6135062 A JP S6135062A JP 15540084 A JP15540084 A JP 15540084A JP 15540084 A JP15540084 A JP 15540084A JP S6135062 A JPS6135062 A JP S6135062A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- case
- image forming
- adjustment
- lens system
- 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.)
- Pending
Links
Landscapes
- Facsimile Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は光学的画像読取装置に係シ、特に原稿と結像レ
ンズ系及び光源との位置調整が容易にしかも確実に行え
る光学的画像読取装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an optical image reading device, and more particularly to an optical image reading device that can easily and reliably adjust the position of an original, an imaging lens system, and a light source.
一般にファクシミリ装置、複写機、イメーゾセンサ等の
光学的画像読取装置は第0図に示す如き構成を有した。Generally, optical image reading devices such as facsimile machines, copying machines, and image sensors have a configuration as shown in FIG.
即ち、光源たるLEDアレイ2から原稿4に光を照射し
、原稿4で反射された光が結像レンズ系たる集束性光伝
送体・例えばセルフォックレンズアレイ(商品名:日本
板硝子、以下SLAと称す)6によ勺光電変換素子8上
に集光され原稿4上の情報の読取シが行われる。原稿4
はローラ10の回転によシ図中の方向へ移動されつつ読
取シが行われる。That is, light is irradiated onto the original 4 from the LED array 2 which is a light source, and the light reflected by the original 4 is transmitted to a focusing light transmitting body such as a selfoc lens array (product name: Nippon Sheet Glass Co., Ltd., hereinafter referred to as SLA) which is an imaging lens system. The light is focused onto a photoelectric conversion element 8 by a photoelectric conversion element 8, and the information on the document 4 is read. Manuscript 4
The reading is performed while being moved in the direction shown in the figure by the rotation of the roller 10.
第0図はSLAの側面図であるが一般的に、SLAの焦
点方向の位置だしには共役長12と共役長×1714を
調整するのが理想的である。しかしながら、従来の画像
読取装置では、共役長×W 14のみの調整か、無調整
にて投込みとするものであった。尚16はSLA 6の
光学中心である。FIG. 0 is a side view of the SLA, and in general, it is ideal to adjust the conjugate length 12 and the conjugate length x 1714 to position the SLA in the focal direction. However, in conventional image reading apparatuses, only the conjugate length x W 14 is adjusted or no adjustment is made. Note that 16 is the optical center of SLA 6.
ところで最近この種の画像読取装置の需要の増大に伴い
、高解像度、高速動作等の要求が高まり、これに対応し
て、結像レンズ系の調整をさらに精密化させる必要が生
じた。しかるに従来の8LAの位置出し方法では、この
要求に答える仁とができずこの為共役長の調整を行ない
得る光学的画像読取装置が考案された。Recently, as the demand for this type of image reading apparatus has increased, the demand for high resolution, high speed operation, etc. has increased, and in response to this, it has become necessary to further refine the adjustment of the imaging lens system. However, the conventional 8LA positioning method cannot meet this requirement, so an optical image reading device capable of adjusting the conjugate length has been devised.
第0図はこの光学的画像読取装置の断面図を示したもの
であシ、厚さ−の異なる紙押え具1Bを多数用意して、
各紙押え具18を筐体20下部に着脱可能に設けること
によp SLA 6の共役長12の調整を行うものであ
る。FIG. 0 shows a cross-sectional view of this optical image reading device.A large number of paper pressers 1B with different thicknesses are prepared.
The conjugate length 12 of the p SLA 6 is adjusted by removably providing each paper presser 18 at the bottom of the casing 20.
しかるにこの画像読取装置では以下に示す欠点が生ずる
。However, this image reading device has the following drawbacks.
(1)第5図に示す如く共役長を調整するとLEDアレ
イ2の照明位置と読取位置とにズレが生じ、確実な読取
シが行えない。(1) If the conjugate length is adjusted as shown in FIG. 5, there will be a shift between the illumination position of the LED array 2 and the reading position, making it impossible to perform reliable reading.
(2)共役長の微調整を行うにあたっては厚さの異なる
紙おさえ具18が多種類必要となシ部品点数が増加する
。(2) Fine adjustment of the conjugate length requires many types of paper pressers 18 having different thicknesses, which increases the number of parts.
(3)共役長の調整を行うにあたり、紙おさえ具18を
取りはずして交換する必要があり作業性が悪い。(3) When adjusting the conjugate length, it is necessary to remove and replace the paper presser 18, which results in poor work efficiency.
そこで本発明の目的は前記欠点を解消すべく原稿の確実
な読取りが行なえ、作業性もよくコストの安い光学的画
像読取装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an optical image reading device that can read documents reliably, has good workability, and is low in cost in order to eliminate the above-mentioned drawbacks.
前記目的を達成すべく本発明は、結像し;/ズ系と光電
変換素子を筐体に設け、光源を有する移動体を前記筐体
に移動可能に設けることを特徴とする。In order to achieve the above object, the present invention is characterized in that an imaging system and a photoelectric conversion element are provided in a housing, and a movable body having a light source is movably provided in the housing.
以下図面に基づいて本発明の実施例を具体的かつ試細に
説明する。Embodiments of the present invention will be described in detail below based on the drawings.
第1図は本発明の1実施例に係る光学的画像読取装置の
断面図であシ、同図に示す如く、筐体20に結像レンズ
系たるSLA 6を貫設し、筐体20上面に光電変換素
子8を設ける。符号22は移動体であり、該移動体22
は突起状の光源支持部24及び紙押え部26を有してお
シ、光源支持部24に光源たるLBDアレイ2が設けら
れる。筐体20と移動体22とは調整ネジ28によって
螺合され、筐体20と移動体22との離間された部分に
板バネ30が設けられる。FIG. 1 is a cross-sectional view of an optical image reading device according to an embodiment of the present invention. As shown in the figure, an SLA 6 as an imaging lens system is installed through a housing 20, and the upper surface of the housing 20 is A photoelectric conversion element 8 is provided. Reference numeral 22 indicates a moving body, and the moving body 22
has a protruding light source support portion 24 and a paper presser portion 26, and the light source support portion 24 is provided with an LBD array 2 serving as a light source. The housing 20 and the movable body 22 are screwed together by an adjustment screw 28, and a leaf spring 30 is provided at a portion where the housing 20 and the movable body 22 are separated from each other.
次に本実施例の作用について説明する。移動体220紙
押え部26Fi常時原稿4に当接してお9、調整ネジ2
8を調整することによって移動体22が筐体20と原稿
4との間隔方法即ち図中■方向に移動される。Next, the operation of this embodiment will be explained. Movable body 220 paper holding part 26Fi is always in contact with document 4 9, adjustment screw 2
By adjusting 8, the movable body 22 is moved in the direction of the distance between the housing 20 and the document 4, that is, in the direction of {circle around (2)} in the figure.
移動体22が■方向に移動するとSLA 6の共役長は
変化するが、LEDアレイ2Fi移動体22と共に移動
するので、原稿4とLEDアレイ2との位置関係は変わ
らず共役長の調整に伴う照明位置ズレが生ずることはな
い。さらに調整ネジ28による調整は、光電変換素子側
から行え、実際の組込み機器内で行えるため調整が効果
的である。When the moving body 22 moves in the ■ direction, the conjugate length of the SLA 6 changes, but since the LED array 2Fi moves together with the moving body 22, the positional relationship between the document 4 and the LED array 2 does not change, and the illumination due to the adjustment of the conjugate length changes. No positional deviation occurs. Furthermore, adjustment using the adjustment screw 28 can be performed from the photoelectric conversion element side, and can be performed within the actual built-in equipment, making the adjustment more effective.
以上詳細かつ具体的に説明した如く本発明によれば以下
に示す著効を奏する。As described above in detail and specifically, the present invention provides the following significant effects.
1)結像レンズ系の共役長の調整が容易に行なえ原稿の
確実な読取シが行える。1) The conjugate length of the imaging lens system can be easily adjusted and documents can be read reliably.
2)結像レンズ系の共役長の調整に伴う光源の位置調整
が不要となシ作業性が良好となる。2) There is no need to adjust the position of the light source in conjunction with adjustment of the conjugate length of the imaging lens system, resulting in improved workability.
3)光電変換素子への光源による熱的影響が、低減され
る。3) The thermal influence of the light source on the photoelectric conversion element is reduced.
4)従来のように多種類の紙押え具は不要となシ部品点
数を減らすことができコスト低減を果たしうる。4) Unlike the conventional paper presser, the number of unnecessary parts can be reduced and costs can be reduced.
第1図は本発明の1実施例に係る光学的画像読取装置の
断面図、第2図は光学的画像読取装置の斜視図、第3図
はセルフォックレンズアレイの共役長を示す説明図、第
4図は従来の光学的画像読取装置の断面図、第5図はあ
4図における要部拡大図である。
図において
2・・LEDアレイ、4・・原稿、6・・・セルフォッ
クレンズアレイ、8・・・光電変換素子、20・・・筐
体、22・・・移動体、28・・・調整ネジ、30・・
・板バネである。FIG. 1 is a sectional view of an optical image reading device according to an embodiment of the present invention, FIG. 2 is a perspective view of the optical image reading device, and FIG. 3 is an explanatory diagram showing the conjugate length of a SELFOC lens array. FIG. 4 is a sectional view of a conventional optical image reading device, and FIG. 5 is an enlarged view of the main part of FIG. In the figure, 2: LED array, 4: Original, 6: SELFOC lens array, 8: Photoelectric conversion element, 20: Housing, 22: Moving body, 28: Adjustment screw , 30...
・It is a leaf spring.
Claims (1)
る光を結像レンズ系によって光電変換素子上に結像させ
る光学的画像読取装置において;前記筐体に前記結像レ
ンズ系と前記光電変換素子を設け、前記筐体と前記原稿
との間隔方向に移動可能で前記光源を有する移動体を前
記筐体に移動可能に設けることを特徴とする光学的画像
読取装置。(1) In an optical image reading device in which a document is irradiated with light emitted from a light source and the light passing through the document is imaged on a photoelectric conversion element by an imaging lens system; What is claimed is: 1. An optical image reading device, comprising a photoelectric conversion element, a movable body movable in the direction of the distance between the casing and the document, and having the light source movably provided in the casing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15540084A JPS6135062A (en) | 1984-07-27 | 1984-07-27 | Optical picture reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15540084A JPS6135062A (en) | 1984-07-27 | 1984-07-27 | Optical picture reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6135062A true JPS6135062A (en) | 1986-02-19 |
Family
ID=15605137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15540084A Pending JPS6135062A (en) | 1984-07-27 | 1984-07-27 | Optical picture reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6135062A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63225152A (en) * | 1987-03-14 | 1988-09-20 | Hitachi Ltd | Foreign matter detector |
EP0508709A2 (en) * | 1991-04-08 | 1992-10-14 | Canon Kabushiki Kaisha | Contact-type image sensor assembly |
-
1984
- 1984-07-27 JP JP15540084A patent/JPS6135062A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63225152A (en) * | 1987-03-14 | 1988-09-20 | Hitachi Ltd | Foreign matter detector |
EP0508709A2 (en) * | 1991-04-08 | 1992-10-14 | Canon Kabushiki Kaisha | Contact-type image sensor assembly |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4196455A (en) | Copying machine with constant length scanning beam | |
US7636181B2 (en) | Image reading apparatus and image forming apparatus | |
JPS6135062A (en) | Optical picture reader | |
EP0479153B1 (en) | Image forming apparatus employing LED head | |
JPS63222573A (en) | Information reader | |
US4319836A (en) | Optical device of a copying apparatus | |
EP0837595B1 (en) | A scan module for adding to a document copying machine and a system comprising a scan module of this kind and a document copying machine | |
JPH07327109A (en) | Reader | |
US4975784A (en) | Method for graving printing forms | |
EP0389277B1 (en) | Exposure device | |
JP4143309B2 (en) | Scanning apparatus and image forming apparatus | |
JP2002171387A (en) | Image reader | |
JP3037966B2 (en) | How to attach the optical unit | |
JP3006229B2 (en) | Scanner document collection device | |
JPS6174444A (en) | Optical picture reader | |
JP3633792B2 (en) | Image forming apparatus | |
JP3612476B2 (en) | CCD mounting structure and image reading apparatus employing the structure | |
JP2504334Y2 (en) | Optical reader mounting structure | |
JPS62222768A (en) | Picture reader | |
JPH03779Y2 (en) | ||
JPS63106740A (en) | Original scanner | |
JPH08329221A (en) | Image reader | |
JPH06217092A (en) | Picture reader | |
JPS6399667A (en) | Picture reader | |
JPS6175664A (en) | Optical picture reading device |