JPS6320132Y2 - - Google Patents
Info
- Publication number
- JPS6320132Y2 JPS6320132Y2 JP1982075004U JP7500482U JPS6320132Y2 JP S6320132 Y2 JPS6320132 Y2 JP S6320132Y2 JP 1982075004 U JP1982075004 U JP 1982075004U JP 7500482 U JP7500482 U JP 7500482U JP S6320132 Y2 JPS6320132 Y2 JP S6320132Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- light emitting
- color
- line
- 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
Links
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
【考案の詳細な説明】
本考案は発光ダイオードによる多色発光ライン
状光源、とくにカラーフアクシミリ等の原稿読み
取り系に用いる小形でしかも信頼性の高いライン
状光源に関するものである。[Detailed Description of the Invention] The present invention relates to a multicolor light emitting line light source using light emitting diodes, and particularly to a small and highly reliable line light source used in document reading systems such as color facsimiles.
従来からフアクシミリ用光源としては、蛍光灯
や単色発光ダイオードを利用したライン状光源を
使用して原稿面を照射し、その反射光をセンサで
受けて光電変換する手段が用いられている。また
複写機等に使用されている光源としては、蛍光
灯、ハロゲンランプ、キセノンランプ等がある。
しかし、これらの光源は次のような欠点を持つて
いる。 Conventionally, as a light source for facsimile, a means has been used in which a linear light source using a fluorescent lamp or a monochromatic light emitting diode is used to illuminate the document surface, and the reflected light is received by a sensor and photoelectrically converted. Light sources used in copying machines and the like include fluorescent lamps, halogen lamps, and xenon lamps.
However, these light sources have the following drawbacks.
蛍光灯、ハロゲンランプは輝度分布が長さ方
向に一様でないのでフアクシミリ、複写機等の
光源として使用できる範囲は長さ方向の中心を
含む１／２程度のものとなり、そのため装置が大
形化する。 Fluorescent lamps and halogen lamps have uneven brightness distribution in the length direction, so the range that can be used as a light source for facsimile machines, copiers, etc. is about 1/2 including the center of the length, which makes the equipment larger. do.
蛍光灯は高圧の点灯回路あるいは安定器が必
要であり、またハロゲンランプは消電電力が大
きいことなどのために駆動回路が高価となる。 Fluorescent lamps require a high-voltage lighting circuit or ballast, and halogen lamps consume a large amount of power, making the drive circuit expensive.
蛍光灯、ハロゲンランプ、キセノンランプ等
の光源は寿命が短かく途中で交換する必要があ
る。 Light sources such as fluorescent lamps, halogen lamps, and xenon lamps have short lifespans and must be replaced at some point.
単色発光ダイオードを利用したライン状光源
では、カラー原稿の読み取りが不可能である。 A linear light source using a monochromatic light emitting diode cannot read a color document.
本考案はこれ等の欠点を解決するために、二種
または数種の異なる発光波長を有する発光ダイオ
ードを交互に配置した発光ダイオードアレイに反
射枠および棒状レンズを設けた多色発光ライン状
光源を提供することを目的とする。 In order to solve these problems, the present invention aims to provide a multi-color light emitting line light source that is equipped with a reflecting frame and a rod-shaped lens on an LED array in which LEDs having two or more different emission wavelengths are arranged alternately.
以下、本発明の一実施例について図面を参照し
て詳細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
第１図は本考案の多色発光ライン状光源の一実
施例であつて、符号１は発光ダイオード及び限流
抵抗を実装したプリント基板、２は発光ダイオー
ドから放出された光を効率良く前面に出すための
反射枠、３は発光ダイオードより出た光をライン
状に集光するための棒状レンズ、Ｌは集光されラ
イン状になつている光の状態を示す。Ｐは読み取
り用原稿である。 Figure 1 shows an embodiment of the multicolor linear light source of the present invention, in which reference numeral 1 is a printed circuit board on which a light emitting diode and a current limiting resistor are mounted, and 2 is a printed circuit board that efficiently directs the light emitted from the light emitting diode to the front. 3 is a rod-shaped lens for condensing the light emitted from the light emitting diode into a line; L indicates the state of the condensed light in a line; P is a document for reading.
第２図は、第１図に示した実施例の変形例を示
すもので、プリント基板１′が反射枠２の背面で
なく側面に取り付けられた例である。 FIG. 2 shows a modification of the embodiment shown in FIG. 1, in which the printed circuit board 1' is attached to the side surface of the reflective frame 2 instead of the back surface.
第３図ａは、第１図のＡ−A′線による断面図
の示し、図中、４はＡ色発光ダイオード（たとえ
ば赤色発光）、５はＢ色発光ダイオード（たとえ
ば緑色発光）であり、それらの発光ダイオード
４，５は一直線上に交互に配置されている。第３
図ｂは第１図のＢ−B′線断面図を示し、第４図
ａは第２図のＡ−A′線断面図、第４図ｂは第２
図のＢ−B′線断面図であ。 FIG. 3a shows a cross-sectional view taken along the line A-A' in FIG. The light emitting diodes 4 and 5 are alternately arranged in a straight line. Third
Figure b shows a sectional view taken along line B-B' in Figure 1, Figure 4a shows a sectional view taken along line A-A' in Figure 2, and Figure 4b shows a sectional view taken along line A-A' in Figure 2.
It is a sectional view taken along the line BB' in the figure.
Ａ色発光ダイオード４……は等間隔で並んでお
り、またＢ色発光ダイオード５……もまた等間隔
で並んでいる。そして、両発光ダイオード４，５
は上述のように交互に配置されている。第６図に
示すような点灯回路にてＡ色発光用電源をONす
れば、Ａ色のライン状光源が得られ、Ｂ色発光用
電源をONすればＢ色のライン状光源が得られ
る。第６図中、R1，R2……、G1，G2……は各々
限流抵抗であり、Ａ色発光ダイオード４、Ｂ色発
光ダイオード５は、各々複数個を直列接続して１
グループとし、各グループ毎に１個の限流抵抗を
有しており、これらは複数のグループにて構成さ
れている。 The A color light emitting diodes 4... are lined up at equal intervals, and the B color light emitting diodes 5... are also lined up at equal intervals. And both light emitting diodes 4, 5
are arranged alternately as described above. In a lighting circuit as shown in FIG. 6, when the power source for emitting color A is turned on, a linear light source of color A is obtained, and when the power source for emitting color B is turned on, a linear light source of color B is obtained. In Fig. 6, R 1 , R 2 . . . , G 1 , G 2 .
Each group has one current limiting resistor, and these are composed of a plurality of groups.
以上の例においては、一直線上に発光ダイオー
ドが配置されているため、発光色を変化させても
照射位置が変わらないので、原稿を読み取る際大
変有利になつてくる。またもう一色発光波長の異
なる発光ダイオード（たとえば青色発光）を追加
することにより、赤，緑，青の三種の発光波長を
有する光源を作ることができる。第５図ａ，ｂに
はこの構造に於ける集光経路を示す棒状レンズの
径を変えることにより容易に集光系の焦点までの
距離f1を変更することが可能であり、また原稿読
み取り位置を変えることにより照射幅も自由に選
択することができる。第５図ｂの集光光路に於い
ては、発光ダイオード４より放出された光が反射
枠２に反射され、棒状レンズ３に平行に入射する
ような位置に発光ダイオード４が配置されてい
る。 In the above example, since the light emitting diodes are arranged in a straight line, the irradiation position does not change even if the emitted light color is changed, which is very advantageous when reading a document. Furthermore, by adding a light emitting diode that emits light of another color with a different wavelength (for example, one that emits blue light), it is possible to create a light source that has three different light emitting wavelengths: red, green, and blue. Figures 5a and b show the light focusing path in this structure. By changing the diameter of the rod-shaped lens, it is possible to easily change the distance f 1 to the focal point of the light focusing system, and it is also possible to easily change the distance f 1 to the focal point of the light focusing system. By changing the position, the irradiation width can also be freely selected. In the condensing optical path shown in FIG. 5b, the light emitting diode 4 is arranged at a position such that the light emitted from the light emitting diode 4 is reflected by the reflective frame 2 and enters the rod-shaped lens 3 in parallel.
以上説明したように、本考案によれば異なる発
光色の発光ダイオードを一直線に交互に配列しこ
れに反射枠と棒状レンズとを組み合わせた光源で
あるので、複数の発光色（発光波長）を持つ帯
状光源を得ることができる、照射幅、明るさを
容易に変更できる、構造が簡単なため量産性に
すぐれている、照射長を変更することが容易で
あり、発光色を変化させても照射位置が同一で
ある、などの効果がある。 As explained above, according to the present invention, the light source is a light source in which light emitting diodes of different emitting colors are arranged alternately in a straight line and combined with a reflective frame and a rod-shaped lens, so it has multiple emitting colors (emitting wavelengths). It is possible to obtain a strip-shaped light source, the irradiation width and brightness can be easily changed, the structure is simple and it is suitable for mass production, the irradiation length can be easily changed, and the irradiation can be performed even if the emission color is changed. This has the effect that the positions are the same.
このため、フアクシミリ読み取り用光源、複写
機用光源、OCR用光源、バーコード読み取り用
光源等のカラー原稿、カラーテープの読み取り用
光源として応用することが可能である。 Therefore, it can be applied as a light source for reading color originals and color tapes, such as a light source for facsimile reading, a light source for copying machines, a light source for OCR, and a light source for reading barcodes.
第１図及び第２図は、本考案による一実施例の
ライン状光源の斜視図。第３図ａは、第１図のＡ
−A′線断面図、第３図ｂは、第１図のＢ−B′線
断面図。第４図ａは、第２図のＡ−A′線断面図、
第４図ｂは第２図のＢ−B′線断面図。第５図ａ
は第１図のライン状光源の集光状態を示す図、第
５図ｂは、第２図のライン状光源の集光状態を示
す図。第６図は、点灯回路の回路図である。
１……プリント基板、２……反射枠、３……棒
状レンズ、４……Ａ色発光ダイオード、５……Ｂ
色発光ダイオード。
1 and 2 are perspective views of a linear light source according to an embodiment of the present invention. Figure 3a is A of Figure 1.
-A' line sectional view; FIG. 3b is a BB' line sectional view of FIG. Figure 4a is a sectional view taken along line A-A' in Figure 2;
FIG. 4b is a sectional view taken along the line B-B' in FIG. 2. Figure 5a
FIG. 5b is a diagram showing the condensing state of the linear light source in FIG. 1, and FIG. 5b is a diagram showing the condensing state of the linear light source in FIG. FIG. 6 is a circuit diagram of the lighting circuit. 1... Printed circuit board, 2... Reflective frame, 3... Rod-shaped lens, 4... A color light emitting diode, 5... B
Colored light emitting diode.
Claims (1)
ドを交互に一直線上に配置して該発光ダイオード
を集光用反射枠で覆い該集光用反射枠の開口面に
光結像用棒状レンズを具備し、発光色を変化させ
ることができるようにしたことを特徴とする発光
ダイオードによる多色発光ライン状光源。 Light-emitting diodes emitting different colors of light are alternately arranged in a straight line on a printed circuit board, the light-emitting diodes are covered with a light-collecting reflective frame, and a light-imaging rod-shaped lens is provided on the opening surface of the light-collecting reflective frame, A multicolor light emitting line light source using light emitting diodes, characterized in that the emitted light color can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7500482U JPS58177957U (en) | 1982-05-24 | 1982-05-24 | Multicolor linear light source using light emitting diodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7500482U JPS58177957U (en) | 1982-05-24 | 1982-05-24 | Multicolor linear light source using light emitting diodes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58177957U JPS58177957U (en) | 1983-11-28 |
| JPS6320132Y2 true JPS6320132Y2 (en) | 1988-06-03 |
Family
ID=30084392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7500482U Granted JPS58177957U (en) | 1982-05-24 | 1982-05-24 | Multicolor linear light source using light emitting diodes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58177957U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0648889Y2 (en) * | 1986-07-30 | 1994-12-12 | シャープ株式会社 | Image sensor unit |
| JP4811669B2 (en) * | 2007-06-22 | 2011-11-09 | 日本精機株式会社 | Printed wiring board |
| JP5468835B2 (en) * | 2009-07-27 | 2014-04-09 | リンテック株式会社 | Light irradiation apparatus and light irradiation method |
| JP2013162033A (en) * | 2012-02-07 | 2013-08-19 | Mitsubishi Electric Corp | Light emitting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131257A (en) * | 1980-03-19 | 1981-10-14 | Hitachi Ltd | Photosensor array device |
| JPS56153879A (en) * | 1980-04-30 | 1981-11-28 | Nippon Telegr & Teleph Corp <Ntt> | Light source for facsimile or the like |
-
1982
- 1982-05-24 JP JP7500482U patent/JPS58177957U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58177957U (en) | 1983-11-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4620924B2 (en) | Lighting equipment | |
| EP1158761A1 (en) | Photographic image acquisition device using led chips | |
| US20070091281A1 (en) | Projection light source having multiple light emitting diodes | |
| JPS6320132Y2 (en) | ||
| JP2518236B2 (en) | Light source | |
| JP2000354132A5 (en) | ||
| JPH0340551B2 (en) | ||
| JP2985221B2 (en) | Color document reader | |
| JPS6148982A (en) | Lighting system by light emission diode | |
| US7452103B2 (en) | Illuminating device for photoshooting | |
| JPS58144847A (en) | lighting equipment | |
| JP2962495B2 (en) | Illumination device for bar code reader | |
| JPS57150270A (en) | Picture reader of multicolor original | |
| JP2006017951A (en) | Document illumination device, image reading device, and image forming device | |
| JP2008072398A (en) | Document illumination device, image reading device, color document reading device, and image forming device | |
| KR920002913Y1 (en) | Led array | |
| JPH01265661A (en) | Solid-state image pickup device | |
| JP3975303B2 (en) | Light emitting diode unit and its lighting method | |
| JPH01143367A (en) | Multicolor led light source | |
| JPS6097337A (en) | Original illuminating device of copying machine or the like | |
| JPH0411155B2 (en) | ||
| JPS61204782A (en) | Photoelectric switch for mark sensor | |
| JPH0745082Y2 (en) | Linear light source | |
| JP2679132B2 (en) | LED linear light source | |
| JPS6149553A (en) | Lighting method of light emitting diode light source |