JPH01276962A - Optical original reader - Google Patents
Optical original readerInfo
- Publication number
- JPH01276962A JPH01276962A JP63106384A JP10638488A JPH01276962A JP H01276962 A JPH01276962 A JP H01276962A JP 63106384 A JP63106384 A JP 63106384A JP 10638488 A JP10638488 A JP 10638488A JP H01276962 A JPH01276962 A JP H01276962A
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical
- light source
- document
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 26
- 239000013307 optical fiber Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims description 11
- 238000003491 array Methods 0.000 abstract description 6
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 238000002300 pressure perturbation calorimetry Methods 0.000 description 1
- 239000005394 sealing glass Substances 0.000 description 1
Landscapes
- Solid State Image Pick-Up Elements (AREA)
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、原稿情報を光学的に、簡単かつ高品質、高階
調で読み取ること、さらにシンプルかつコンパクト化す
ることを可能にした光学的原稿読み取り装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides an optical document reading device that is capable of optically reading document information easily, with high quality, and with high gradation, and which is further simple and compact. It is related to.
従来の技術
原稿情報を読み取る素子としては、これまで、ＣＣＤイ
メージセンサ、ＭＯＳイメージセンサ。Conventional technology Until now, CCD image sensors and MOS image sensors have been used as elements for reading manuscript information.
バイポーライメージセンサ、アモルファスシリコンイメ
ージセンサ、ＣａＳイメージセンサ等がある。There are bipolar image sensors, amorphous silicon image sensors, CaS image sensors, and the like.
従来の光学的原稿読み取り装置は、第３図に示すように
、基板２０に形成したイメージセンサ素子２１、受光素
子２２を封止ガラス２３で封止し、その先端部にホルダ
ー２７を介してロッドレンズ２４を取付け、発光ダイオ
ードとレンズからなる光源部２６を原稿２６に近接して
配置して構成されていた。イメージセンサ素子２１の感
度の均一性、原稿面の照度の均−性及びロッドレンズ２
４の均一性とそれら互いの位置精度等が高品質、高階調
の読み取りには特に必要である。As shown in FIG. 3, in a conventional optical document reading device, an image sensor element 21 and a light receiving element 22 formed on a substrate 20 are sealed with a sealing glass 23, and a rod is attached to the tip of the glass via a holder 27. A lens 24 is attached, and a light source section 26 consisting of a light emitting diode and a lens is arranged close to the document 26. Uniformity of sensitivity of image sensor element 21, uniformity of illuminance on document surface, and rod lens 2
4 uniformity and relative positional accuracy are especially necessary for high-quality, high-gradation reading.
現実として、イメージセンサ素子２１の感度や原稿面の
照度は、共にプラスマイナス数％の不均一性を持ってお
り、又ロッドレンズ２４の均一性やそれら互いに位置精
度が悪いため、このままでは、高品質、高階調の読み取
りは難しいと思われる。さらに、ファクシミリやインテ
リジェントｐＰＣ等において、高解像度のイメージセン
サのニーズが高まっており、受光素子２２を高密度に並
べることが必要とされているが、イメージセンサ素子２
１の継目や、Ｍ Ｔ Ｆ （ＭｏｄｕｌａｔｉｏｎＴｒ
ａｎｓｆｅｒ Ｆｕｎｃｔｉｏｎ ）値などが問題とな
り、困難をしいられている。In reality, the sensitivity of the image sensor element 21 and the illuminance of the document surface both have non-uniformity of plus or minus a few percent, and the uniformity of the rod lens 24 and their relative positional accuracy are poor, so if things continue as they are, high It seems difficult to read quality and high gradations. Furthermore, there is a growing need for high-resolution image sensors in facsimile machines, intelligent PPCs, etc., and it is necessary to arrange the light receiving elements 22 at high density.
1 seam, M T F (ModulationTr
Ansfer Function) values have become a problem and are causing difficulties.
又、装置自体としての、コスト低下、シンプル化、コン
パクト化が叫けばれているが、従来のただ単に、イメー
ジセンサ素子２１．光源部２６及びロッドレンズ２４を
組み合わせる方法では、難しいものであった。Furthermore, although there has been a call for cost reduction, simplification, and compactness of the device itself, the conventional image sensor element 21. The method of combining the light source section 26 and the rod lens 24 was difficult.
発明が解決しようとする課題
上記従来の構成では、光源部２６の光度の不均一性や光
源部２６と原稿面２６との位置調整の具合いなどにより
、原稿面照度の不均一性が生じ、またそれらに付は加え
、原稿面２６と受光素子２２がレンズ系により一対一の
対応で結ばれていないこと、さらに重大な要因に、クロ
ストークなく結ばれていないこと、特にＧ４ファックシ
ミリやカラーの読み取り等、高解像度を目指すには、受
光素子２２を高密度に並べる必要があり、イメージセン
サ素子２１の継目に訃いてのピッチ間隔の違いなどで、
受光素子２２での照度の不均一性をまねき、同じ白レベ
ルでも映像信号の値が異なシ又、ＭＴＦ値の低下も生ず
る。これによυ、読み取り品質９階調、解像度が低下し
ている。Problems to be Solved by the Invention In the above-mentioned conventional configuration, non-uniform illuminance on the document surface occurs due to non-uniformity in the luminous intensity of the light source section 26 and the position adjustment between the light source section 26 and the document surface 26. In addition to these, the original surface 26 and the light-receiving element 22 are not connected in a one-to-one correspondence by the lens system, and more importantly, they are not connected without crosstalk, especially when using G4 facsimile or color. In order to achieve high resolution such as reading, it is necessary to arrange the light receiving elements 22 at high density, and due to differences in pitch between the joints of the image sensor elements 21, etc.
This results in non-uniformity of illuminance at the light receiving element 22, resulting in different video signal values even at the same white level, and a decrease in the MTF value. As a result, the reading quality has decreased by 9 gradations and the resolution has decreased.
又、コスト低下や組立て、調整等の面で、読み取り装置
自体のシンプル化、コンパクト化が必要とされているが
、従来のイメージセンサ部、光源部及びロッドレンズ部
を各々別々のものを組み合わせている方法では、先の品
質１階調、解像度とも合わせて、これらの問題を解決す
ることは困難である。In addition, in terms of cost reduction, assembly, adjustment, etc., it is necessary to simplify and make the reading device itself more compact. With the method described above, it is difficult to solve these problems together with the above-mentioned quality of one gradation and resolution.
課題を解決するための手段
上記課題を解決するために、本発明は、イメージセンナ
の基板に、光源をも実装し、さらに同基板に、受光素子
と同数の元ファイバーアレイを設け、光源からの光を一
対一の対応で原稿へ導き、さらに、原稿からの光情報を
、同イメージセンサ基板に設けた受光素子と同数の光フ
アイバープレイにより、一対一の対応で、しかも完全密
着で、クロストークなく受光素子に導く構成としたもの
である。Means for Solving the Problems In order to solve the above problems, the present invention mounts a light source on the substrate of an image sensor, and further provides the same number of original fiber arrays as the number of light receiving elements on the same substrate, so that the light from the light source is Light is guided to the original in a one-to-one correspondence, and the optical information from the original is transmitted through optical fiber plays with the same number of light-receiving elements installed on the same image sensor board. The structure is such that the light is guided directly to the light receiving element instead of the light receiving element.
作用
上記構成とすることによシ、イメージセンナの基板上に
実装した光源からの光を、基板中に設けた、受光素子と
同数の光フアイバープレイによシ原稿面に一対一の対応
で導き、次に原稿面からの光情報を、同じくその基板に
設けた受光素子と同数の元ファイバーアレイにより、一
対一の対応で、しかも完全密着で、クロストークなく受
光素子に導くことができイメージセンサ素子の継目問題
も解消し、高品質、高階調、高解像度の読み取りが可能
で、コストの低減、シンプル化、コンパクト化が図れる
ものとなる。Effect With the above configuration, the light from the light source mounted on the image sensor board is guided to the document surface in one-to-one correspondence through the same number of optical fiber playbacks as the number of light receiving elements provided in the board. Next, the optical information from the document surface is guided to the light receiving elements in a one-to-one correspondence, in perfect contact, and without crosstalk, using the same number of original fiber arrays as the light receiving elements, which are also installed on the substrate. This solves the problem of element joints, enables high-quality, high-gradation, and high-resolution reading, and enables cost reduction, simplicity, and compactness.
実施例 以下、本発明の実施例を図面を用いて説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
第１図ａ −ｃは、本発明の第１の実施例における光学
的原稿読み取り装置の略図である。1a-c are schematic diagrams of an optical document reading device in a first embodiment of the present invention.
１はイメージセンサ素子２および光源４を保護するため
の保護膜、２は基板ｅ上に設けたイメージセンナ素子、
３は同じ基板θ上に設けた受光素子、４はさらに同じ基
板６上に設けた発光ダイオードよりなる光源、５は光源
４からの光を原稿７ヘさらに原稿７からの光情報を受光
素子３へ一対一の対応で、クロストークなく完全密着で
結ぶ、受光素子３の大きさより十分小さい微小口径を持
つ光ファイバーの束を並列に並べた光ファイバーアレイ
、６はイメージセンサ素子２．受光素子３゜光源４及び
光ファイバーアレイ５などを有する基板、７は原稿であ
る。1 is a protective film for protecting the image sensor element 2 and the light source 4; 2 is an image sensor element provided on the substrate e;
3 is a light-receiving element provided on the same substrate θ; 4 is a light source made of a light emitting diode further provided on the same substrate 6; 5 is a light-receiving element 3 which transmits light from the light source 4 to a document 7; 6 is an optical fiber array in which a bundle of optical fibers having a minute diameter sufficiently smaller than the size of the light receiving element 3 is arranged in parallel, and is connected in perfect contact with each other without crosstalk in a one-to-one correspondence to the image sensor element 2. A substrate has a light receiving element 3, a light source 4, an optical fiber array 5, etc., and 7 is a document.
以上のように構成された光学的原稿読み取り装置につい
て、以下第１図ａ −ｃを用いて、その動作を説明する
。The operation of the optical document reading apparatus configured as described above will be described below with reference to FIGS. 1a to 1c.
光源４より出た光は、光ファイバーアレイ６を通り一対
一の対応で原稿面７へ導かれ、照明する。The light emitted from the light source 4 passes through the optical fiber array 6 and is guided to the document surface 7 in a one-to-one correspondence for illumination.
原稿面７からの光情報は、同様に、光ファイバーアレイ
５を通り一対一の対応で受光素子３に導かれる。これに
より確実な原稿７の読み取りが行える。Similarly, optical information from the document surface 7 passes through the optical fiber array 5 and is guided to the light receiving element 3 in a one-to-one correspondence. Thereby, the document 7 can be read reliably.
以下本発明の第２の実施例について図面を参照しながら
説明する。A second embodiment of the present invention will be described below with reference to the drawings.
第２図ａ−Ｃは、本発明の第２の実施例における光学的
原稿読み取り装置の略図である。2a-C are schematic diagrams of an optical document reading device in a second embodiment of the present invention.
同図において、第１図の構成と異なるのは、光フアイバ
ープレイの部分である。第１図の光ファイバーアレイ６
については、受光素子３に比べて十分小さい微小口径の
光ファイバーを多数束ねて並列に並べ、その一端を原稿
面へ、他端を２つの束に分けて、１つを光源部４へ、も
う１つを受光素子３へ導いたものであったが、第２図で
は光フアイバアレイ６として受光素子３と同じ大きさを
持つ口径のふたまたの光ファイバーを並列に並べて、そ
の一端を原稿７の面へ、他端の１つを光源部４へ、もう
１つを受光素子３へ導くものとしている。In the figure, the difference from the configuration in FIG. 1 is the optical fiber play. Optical fiber array 6 in Figure 1
For this, a large number of optical fibers with a diameter sufficiently small compared to the light receiving element 3 are bundled and arranged in parallel, one end of which is directed to the document surface, the other end of which is divided into two bundles, one is directed to the light source section 4, and the other is connected to the light source section 4. In the optical fiber array 6 shown in FIG. One of the other ends is led to the light source section 4, and the other end is led to the light receiving element 3.
上記のように構成された光学的原稿読み取り装置につい
て、その動作は、第１図で説明した第１の実施例と同じ
である。The operation of the optical document reading device configured as described above is the same as that of the first embodiment described in FIG.
発明の効果
以上のように本発明によれば、同じ基板上に、イメージ
センサ素子、受光素子、光源を実装し、さらに、その基
板に、光ファイバーアレイを設け、光源からの光を一対
一の対応で原稿面に導き、原稿面からの光情報を一対一
で受光素子に、クロストークなく、完全密着で導くこと
を可能にした。Effects of the Invention As described above, according to the present invention, an image sensor element, a light receiving element, and a light source are mounted on the same substrate, and an optical fiber array is further provided on the substrate, so that light from the light source can be transmitted in one-to-one correspondence. This makes it possible to guide optical information from the document surface to the light receiving element in perfect contact with the light receiving element on a one-to-one basis without crosstalk.
これらのことより、光学的原稿読み取り装置として、シ
ンプル化、コンパクト化を可能にし、また、イメージセ
ンサ素子の継目問題、ＭＴＦ値低下問題、クロストーク
の問題、光源部とレンズ系及び受光素子部等の位置調整
とその精度の問題及びそれらの結果として起こる受光素
子部での照度の不均一性の問題等をすべて解決すること
ができ、高品質、高階調及び高解像度での読み取りを可
能にした。よって本発明は、極めて優れた光学的原稿読
み取り装置として産業上、多大な効果を及ぼすものであ
る。From these points, it is possible to simplify and downsize the optical document reading device, and it also solves problems such as seam problems of image sensor elements, MTF value reduction problems, crosstalk problems, light source part, lens system, light receiving element part, etc. The problem of position adjustment and its accuracy, as well as the resulting non-uniformity of illumination at the light receiving element, can all be solved, making it possible to read with high quality, high gradation, and high resolution. . Therefore, the present invention has great industrial effects as an extremely excellent optical document reading device.
第１図ａｒｃは、本発明の第１の実施例における光学的
原稿読み取り装置の断側面図、断正面図と平面図、第２
図ａ −％−ｃは本発明の第２の実施例における光学的
原稿読み取り装置の断側面図、断正面図と平面図、第３
図は従来の光学的原稿読み取り装置の断面図である。
１・・・・・・保護膜、２・・・・・・イメージセンサ
素子部、３・・・・・・受光素子部、４・・・・・・光
源部、６・・川・光ファイバーアレイ、６・山・・基板
、７・・・・・・原稿。FIG. 1 arc shows a cross-sectional side view, a cross-sectional front view and a plan view of an optical document reading device according to a first embodiment of the present invention, and a second
Figures a-%-c are a sectional side view, a sectional front view and a plan view of an optical document reading device according to a second embodiment of the present invention, and a third
The figure is a sectional view of a conventional optical document reading device. DESCRIPTION OF SYMBOLS 1... Protective film, 2... Image sensor element part, 3... Light receiving element part, 4... Light source part, 6... Optical fiber array , 6. Mountain... board, 7... manuscript.
Claims (4)
り、光ファイバーを用いて、光源と原稿、原稿と受光素
子を接続した光学的原稿読み取り装置。(1) An optical document reading device that consists of an optical system such as an image sensor element and a light source, and uses optical fibers to connect the light source and the document, and the document and the light-receiving element.
ージセンサ素子と同じ基板に実装し、その光を、同じそ
の基板中に設けた受光素子と同数で、並列に並べた光フ
ァイバーアレイにより一対一の対応で原稿へ導き、さら
に原稿からの光情報を、同基板中に設けた受光素子と同
数の光ファイバーアレイにより、一対一の対応で受光素
子へ導く構成とした請求項１記載の光学的原稿読み取り
装置。(2) A light emitting diode is used as a light source, mounted on the same board as the image sensor element, and the light is transmitted one-on-one through an optical fiber array arranged in parallel with the same number of light receiving elements installed on the same board. 2. The optical document reader according to claim 1, wherein the optical information from the document is guided to the light receiving elements in a one-to-one correspondence by an optical fiber array having the same number of light receiving elements as the number of light receiving elements provided on the substrate. Device.
イバーとして、受光素子に比べ十分微小口径の光ファイ
バーを多数束ねたものを用い、一方端を原稿へ、他端を
２つに分けて、１つを光源へ、もう１つを受光素子へ結
ぶ構成とした請求項２記載の光学的原稿読み取り装置。(3) As one optical fiber that connects the light source and the document, and the document and the light-receiving element, a bundle of many optical fibers with a diameter sufficiently smaller than that of the light-receiving element is used, and one end is connected to the document, and the other end is divided into two, 3. The optical document reading device according to claim 2, wherein one of the optical document reading devices is connected to a light source and the other is connected to a light receiving element.
イバーとして、ふたまたの光ファイバーを用い、一方端
を原稿へ、他端のふたまたのうちの１つを光源へ、他方
を受光素子へ結ぶ構造とした請求項２記載の光学的原稿
読み取り装置。(4) A bifurcated optical fiber is used as one optical fiber that connects the light source and the original, and the original and the light receiving element, with one end going to the original, one of the two ends going to the light source, and the other end going to the light receiving element. 3. The optical document reading device according to claim 2, wherein the optical document reading device has a connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106384A JP2772398B2 (en) | 1988-04-28 | 1988-04-28 | Optical document reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63106384A JP2772398B2 (en) | 1988-04-28 | 1988-04-28 | Optical document reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01276962A true JPH01276962A (en) | 1989-11-07 |
| JP2772398B2 JP2772398B2 (en) | 1998-07-02 |
Family
ID=14432211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63106384A Expired - Fee Related JP2772398B2 (en) | 1988-04-28 | 1988-04-28 | Optical document reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2772398B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212058A (en) * | 1990-01-17 | 1991-09-17 | Matsushita Electric Ind Co Ltd | Picture reader |
| US6815654B1 (en) | 1996-09-18 | 2004-11-09 | Nec Corporation | Image sensor device using thin film light source arranged light receiving elements and image to be sensed |
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1988
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|---|---|---|---|---|
| JPS59193437U (en) * | 1983-06-09 | 1984-12-22 | アトム株式会社 | infusion device |
| JPS6179314U (en) * | 1984-10-29 | 1986-05-27 | ||
| JPS61277252A (en) * | 1985-05-31 | 1986-12-08 | Usac Electronics Ind Co Ltd | Contact type image sensor |
| JPS63238870A (en) * | 1987-03-27 | 1988-10-04 | 日機装株式会社 | Programmable continuous minute amount injection pump |
| JPS63257574A (en) * | 1987-04-04 | 1988-10-25 | ベー・ブラウン・メルズンゲン・アクチエン・ゲゼルシャフト | Pressure injection apparatus |
| JPH0542209A (en) * | 1991-08-09 | 1993-02-23 | Atom Kk | Transfusion device |
| JP3088547U (en) * | 2002-03-13 | 2002-09-20 | サンレイインターナショナル株式会社 | In-line type machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212058A (en) * | 1990-01-17 | 1991-09-17 | Matsushita Electric Ind Co Ltd | Picture reader |
| US6815654B1 (en) | 1996-09-18 | 2004-11-09 | Nec Corporation | Image sensor device using thin film light source arranged light receiving elements and image to be sensed |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2772398B2 (en) | 1998-07-02 |
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