JPS60124165A - Reader - Google Patents

Reader

Info

Publication number
JPS60124165A
JPS60124165A JP58231506A JP23150683A JPS60124165A JP S60124165 A JPS60124165 A JP S60124165A JP 58231506 A JP58231506 A JP 58231506A JP 23150683 A JP23150683 A JP 23150683A JP S60124165 A JPS60124165 A JP S60124165A
Authority
JP
Japan
Prior art keywords
light
fluorescent
lighting means
read out
fluorescent member
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
Application number
JP58231506A
Other languages
Japanese (ja)
Inventor
Nobuyuki Sekimura
関村 信行
Tatsumi Shoji
辰美 庄司
Teruhiko Furushima
古島 輝彦
Toshiyuki Komatsu
利行 小松
Masaki Fukaya
深谷 正樹
Katsumi Nakagawa
克己 中川
Tatsuto Kawai
達人 川合
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP58231506A priority Critical patent/JPS60124165A/en
Publication of JPS60124165A publication Critical patent/JPS60124165A/en
Pending legal-status Critical Current

Links

Landscapes

  • Light Receiving Elements (AREA)
  • Image Input (AREA)
  • Facsimile Heads (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To obtain a reader reduced the cost of lighting means and practically removed the heat generation of lighting means by using a fluorescent member as the lighting means and emitting the fluorescent member by external light. CONSTITUTION:An original 1 to be read out is arranged so that the surface to be read out is turned downwards, irradiated light from the lighting means is reflected by the reading surface and the reflected light is guided to a photosensor 4 through a lens array 3 and detected. The fluorescent member 2 obtained by kneading a fluorescent substance into transparent resin such as acrylic resin and molding the flourescent resin is used as the lighting means. When external light is made incident to a part 2b, the fluorescent substance in the fluoresent member 2 emits light and the emitted light is transmitted through the fluoresent member 2, reached to an end surface part 2a and irradiated to the lower surface of the original 1 to be read out.

Description

【発明の詳細な説明】 〔技術分野〕 本発明は光学的読取装置にi4’−I L、%に該読取
装置における照明手段の改良に1力する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention is directed to an optical reader, and particularly to improvements in illumination means in the reader.

〔従来技術〕[Prior art]

従来、ファクシミリや文字甑取装龜等の画像信号処理用
光電変換装置において結晶シリコンからなる1次元のフ
ォトダイオード捜長尺フォトセンサーが用いられていた
。このフォトセンサーリ2、作製できるシリコン単結晶
の大きさ及び加工精度の点から、その長さに限度があシ
且つ製品の歩留シも低い欠点があった。従って、計、取
原稿の幅が大きい場合(たとえばA4版でll’M 2
10 m )には、レンズ系を用いて原画をフォトセン
サー上に縮小結像して読取りを行うことが行われていた
。この様な縮小光学系を用いると受光部の小型化が困難
になり、また個々の受光面積(画素面積)が大きくとれ
ないために十分な信号霜流を得るためには太き々光量を
必要とし、このため上2の如きフォトセンサーは読取時
間を長くした低スピードタイプの読取装置又は高解像力
を要求されないhW取装置に使用されているのが現状で
ある。
2. Description of the Related Art Conventionally, a one-dimensional photodiode sensor made of crystalline silicon has been used in photoelectric conversion devices for image signal processing such as facsimile machines and letter pickers. This photo sensor 2 has the disadvantage that there is a limit to its length due to the size of the silicon single crystal that can be produced and the processing accuracy, and the product yield is low. Therefore, if the total width of the manuscript is large (for example, ll'M 2 in A4 size)
10 m), a lens system was used to reduce the original image onto a photosensor and read it. Using such a reduction optical system makes it difficult to miniaturize the light receiving section, and since the individual light receiving area (pixel area) cannot be made large, a large amount of light is required to obtain a sufficient signal flow. Therefore, at present, photosensors such as the one mentioned above are used in low-speed type reading devices that require a long reading time or in hW reading devices that do not require high resolution.

これに対し、最近ではアモルファスシリコンを用いたフ
ォトセンサーが提東されている。このフォトセンサーは
真空堆積法でアモルファスシリコン薄層を形成すること
によシ作製されるので、大1lIII私や長尺のものが
容易に得られる。かくして、アモルファスシリコンを用
いたフォトセンサーによればM稿の+iHが大きい場合
にも等倍にて読取ることができ、密着型のイメージセン
サ−が可能トなった。これにより、ファクシミリ等の読
取装置を小型化することができる。
In contrast, recently, photosensors using amorphous silicon have been developed. Since this photosensor is manufactured by forming a thin layer of amorphous silicon using a vacuum deposition method, it can be easily obtained in large or long lengths. In this way, a photosensor using amorphous silicon can read at the same magnification even when the +iH of an M document is large, making a close-contact image sensor possible. Thereby, a reading device such as a facsimile can be downsized.

しかしながら、従来提案されている密着型イメージセン
サ−搭載のファクシミリ等の装置においては、訟、取の
ための照明手段として蛍光灯又は長尺LEDが用いられ
ているので、必、〆tコストがかさみ、また発熱により
周囲が君、影響を受けるという点で未だ改良の余地がク
リされている。
However, in devices such as facsimile machines equipped with close-contact image sensors that have been proposed in the past, fluorescent lamps or long LEDs are used as illumination means for documents, which inevitably increases costs. Also, there is still room for improvement in that the surrounding area is affected by the heat generated.

〔本発明の目的〕[Object of the present invention]

本発明は、以上の如き従来技術に鈷み、光学的読取装置
における照明手段のコストを低減し、甘だ照明手段の発
熱を実質上なくすることを目的とする。
The present invention takes advantage of the above-mentioned prior art and aims to reduce the cost of the illumination means in an optical reading device and to substantially eliminate the excessive heat generated by the illumination means.

〔本発明の実施例〕[Example of the present invention]

第1図は本発明による読取装置の一実施例の断面概略図
である。読取原稿1はその読取られるべき面を下に向け
て配置されている。2は照明手段を構成する蛍光部材で
ある。この蛍光部材2vよ内部に蛍光体をつむ透明体で
あシ、たとえばアクリル樹脂等の樹脂中に蛍光体を練シ
込んで成形することにより作製される。蛍光部ゼ2は板
状であシその一端面部2aはb℃取原+16,1の読取
られるべき部分(即ち照明されるべき部分)に対面せし
められている。酋光剖利2の細砕1部2bil″l:適
宜の広さがツ1.学的に外部に露出きれている。往って
、外部光が2b部分に入射するとり、元部セ2中の蛍光
体が発光し1、その発光光は蛍光部材2中を伝播し臥面
剖2aに到逃し、ここから読取原稿1の下面に向けて服
射せしめられる。戻)i、ilの下面から反射されたブ
しはセルフォックレンズアレイ3によりフォトセンサー
4に導かれ検出訟れる。5はセンサー用基板である。
FIG. 1 is a schematic cross-sectional view of an embodiment of a reading device according to the present invention. The original to be read 1 is placed with the side to be read facing down. 2 is a fluorescent member constituting the illumination means. The fluorescent member 2v is a transparent material containing a fluorescent material, and is manufactured by kneading the fluorescent material into a resin such as acrylic resin and molding it. The fluorescent part 2 is plate-shaped, and one end surface 2a thereof faces the part to be read (that is, the part to be illuminated) of the b.degree. C. reference +16,1. Shredded part 2 of the light analysis 2: Appropriate area is not fully exposed to the outside technically.When external light enters the part 2b, The phosphor inside emits light 1, and the emitted light propagates through the fluorescent member 2 and misses the lying surface 2a, from where it is emitted toward the lower surface of the document 1 to be read.Return) The lower surface of i, il The light reflected from the photo sensor 4 is guided by the SELFOC lens array 3 and detected by the photo sensor 4. 5 is a sensor substrate.

第2図は本発明による乱取装置への他の実力し例の1面
図である。この実施例において(は上記第1凹の実施例
と異なりセルフォックレンズ3は用いられておらず、フ
ォトセンサー4が十分に)j*稿1に近接せしめられて
おり、蛍光fib02の端面2aから照射された光がフ
ォトセンサ−4の下(1’i11から透明なセンサー用
基板5を辿って原セ41の下面を照明する様になってお
シ、原稿1からの反射光は直接フォトセンサー4に導か
れ検出される。尚、6は遮光膜である。
FIG. 2 is a front view of another practical example of the randori device according to the present invention. In this embodiment (unlike the first concave embodiment described above, the SELFOC lens 3 is not used, and the photosensor 4 is brought sufficiently close to the j* document 1), and from the end surface 2a of the fluorescent fib02. The irradiated light follows the transparent sensor substrate 5 from below the photosensor 4 (1'i11) and illuminates the bottom surface of the source 41, and the reflected light from the document 1 directly reaches the photosensor. 4 and is detected. Note that 6 is a light shielding film.

第3図は本発明31“d取装置に使用される蛍光部拐2
の他の実施例の断面図であり、外部光を受光する部分2
bの厚さが〃くされており、これに工り外部光の吸収を
高めることができる。また、外部光受光面及び照射対面
2aを断く全ての表面に反射膜7たとえばアルミニウム
、金、クロム等の反射率の高い金属のコーティングが旋
されており、これによシ蛍光部月2内の蛍つ°r1体の
発光光をより有効に照射端面2aへと到達せしめること
ができる。
Fig. 3 shows the fluorescent part 2 used in the present invention 31 "d removal device".
2 is a sectional view of another embodiment of the invention, in which a portion 2 that receives external light
The thickness of b is small, and this can be modified to increase the absorption of external light. In addition, a reflective film 7 made of a highly reflective metal such as aluminum, gold, or chromium is coated on all surfaces that separate the external light receiving surface and the irradiation surface 2a. The emitted light of the fluorescent light can be made to reach the irradiation end surface 2a more effectively.

また、着色されたアクリル+1″1脂中に蛍光体をスP
シ込むことによシ、着色された蛍光部材を作製すること
ができ、たとえはルし取装置において3つの蛍光部材2
としてそれぞれ卯、緑又は宵の三原色に着色したもの用
いることによりカラー読取装置を構成することもできる
In addition, the fluorescent material is sprayed into the colored acrylic + 1"1 resin.
Colored fluorescent members can be produced by injecting, for example, three fluorescent members 2 in a drawing device.
It is also possible to construct a color reading device by using the three primary colors of rabbit, green, and evening.

以上の実施例において、外部光としては自然光、室内光
その他を用いることができるが、タ:部光の光ガ1不足
に対処するため、適宜蛍光部月2の照射のための元凶を
備えておくこともできる。
In the embodiments described above, natural light, indoor light, etc. can be used as the external light, but in order to cope with the lack of light 1 of the part light, a source for illuminating the fluorescent part 2 is provided as appropriate. You can also leave it there.

尚、本発明において用いられる蛍光体としては、クマリ
ン&S lj体、スチルベン、エオシン、フルオレセイ
ン紙が挙げられる。
Incidentally, examples of the phosphor used in the present invention include coumarin and Slj, stilbene, eosin, and fluorescein paper.

〔本発明の効果〕[Effects of the present invention]

以上の如き本発明読取装置によれば、照明手段として蛍
光部利を用い、これを夕1部光により発光せしめている
ので、製筒コストが低減せしめられ、照明手段の発熱が
なく、また郷明用電力を必要としない。
According to the reading device of the present invention as described above, a fluorescent part is used as the illumination means, and it is made to emit light in the evening, so that the tube manufacturing cost is reduced, there is no heat generation from the illumination means, and the lighting means does not generate heat. Does not require lighting power.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図及び第2図は本発明による照明装置の断面図であ
り、第3図は蛍光部材のUハ面[ン1である。 1・・・読取原稿、2・・・蛍光部制、3・・・セルフ
ォックレンズアレイ、4・・・フォトセンサー、5・・
・基板、6・・・遮光j挨、7・・・反射膜。 III図 第2図 どq 第3図
1 and 2 are cross-sectional views of the illumination device according to the present invention, and FIG. 3 is a side view of the fluorescent member. 1... Original to be read, 2... Fluorescent system, 3... SELFOC lens array, 4... Photo sensor, 5...
・Substrate, 6... Light shielding dust, 7... Reflective film. Figure III Figure 2 Doq Figure 3

Claims (2)

【特許請求の範囲】[Claims] (1)フォトセンサーを読取92とする光学的読取装置
において、一端面が照明すべき部分に対面して配置され
且つ一部分が外部光を受光し得る杉に配置されている蛍
光部材を照明手段として用いることを特徴とする、読取
装置。
(1) In an optical reading device using a photosensor as the reader 92, a fluorescent member whose one end face is placed facing the area to be illuminated and whose part is placed on a cedar tree capable of receiving external light is used as an illumination means. A reading device characterized in that it is used.
(2)蛍光部材が着色されている、第1項の読取装置。(2) The reading device according to item 1, wherein the fluorescent member is colored.
JP58231506A 1983-12-09 1983-12-09 Reader Pending JPS60124165A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58231506A JPS60124165A (en) 1983-12-09 1983-12-09 Reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58231506A JPS60124165A (en) 1983-12-09 1983-12-09 Reader

Publications (1)

Publication Number Publication Date
JPS60124165A true JPS60124165A (en) 1985-07-03

Family

ID=16924557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58231506A Pending JPS60124165A (en) 1983-12-09 1983-12-09 Reader

Country Status (1)

Country Link
JP (1) JPS60124165A (en)

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