JPS63182963A - Led array light source - Google Patents

Led array light source

Info

Publication number
JPS63182963A
JPS63182963A JP62014523A JP1452387A JPS63182963A JP S63182963 A JPS63182963 A JP S63182963A JP 62014523 A JP62014523 A JP 62014523A JP 1452387 A JP1452387 A JP 1452387A JP S63182963 A JPS63182963 A JP S63182963A
Authority
JP
Japan
Prior art keywords
light
led array
light source
light emitting
substrate
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
JP62014523A
Other languages
Japanese (ja)
Inventor
Kazuya Ueda
和也 上田
Yoko Yamanaka
山中 庸子
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62014523A priority Critical patent/JPS63182963A/en
Publication of JPS63182963A publication Critical patent/JPS63182963A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To emit light beams of plural kinds of color with one LED array by arraying plural light emitting elements whose wavelengths of emitted light beams are different from each other on the substrate of an LED array light source to impress voltages independently of each other. CONSTITUTION:The light emitting element 11 is an element(red) that emits red light, the same 12 is an element(blue) that emits blue light, and the same 13 is an element(green) that emits green light. To the respective light emitting elements 11-13 arrayed on the substrate 4, voltages can be independently impressed from the external. The beams of light emitted by the elements 11-13 are condensed by a condenser lens 2 fixed on the elements with a holder, and radiate the surface of an original located in front of the LED array light source. In such a way, the light emitting elements of different wavelengths of emission light are arrayed on the substrate, and voltages can be independently impressed to them, therefore, light beams of plural wavelengths can be emitted from one LED array light source.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はファクシミリ、OCR等の光学的画像読み取り
装置において、読み取り原稿の原稿面を照明するLED
アレイ光源に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an optical image reading device such as a facsimile machine or an OCR device, in which an LED illuminates the surface of a read document.
This invention relates to an array light source.

従来の技術 近年、画像入力装置等において原稿を照明する光源とし
て高輝度でかつコンパクトなLEDアレイ光源の需要が
高まってきている。
2. Description of the Related Art In recent years, there has been an increasing demand for high-intensity and compact LED array light sources as light sources for illuminating documents in image input devices and the like.

以下図面を参照しながら、従来のLEDアレイ光源につ
いて説明する。
A conventional LED array light source will be described below with reference to the drawings.

第2図+a+、 (blは従来のLEDアレイ光源の構
成を示すもので、第2図(a)はLEDアレイ光源の構
成図、第2図〜)は基板の構成の一例を示す図である。
Figure 2+a+, (bl shows the configuration of a conventional LED array light source, Figure 2(a) is a configuration diagram of the LED array light source, and Figures 2~) are diagrams showing an example of the configuration of the board. .

第3図は従来のLEDアレイ光源を用いた画像読み取り
装置の画像読み取り部の構成の一例を示すものである。
FIG. 3 shows an example of the configuration of an image reading section of an image reading device using a conventional LED array light source.

第2図(alにおいて5はLEDアレイ光源における発
光素子で、2は発光素子5から発光された光を集光する
働きを持つ集光レンズ、4は前記発光素子を配列する基
板で、3は集光レンズを発光素子上に固定するホルダー
である。
In Figure 2 (al), 5 is a light emitting element in the LED array light source, 2 is a condensing lens that functions to condense the light emitted from the light emitting element 5, 4 is a substrate on which the light emitting elements are arranged, and 3 is a light emitting element in the LED array light source. This is a holder that fixes the condensing lens onto the light emitting element.

第2図(blにおいて、4は発光素子5を配列する基板
、5は発光素子である。
In FIG. 2 (bl), 4 is a substrate on which light emitting elements 5 are arranged, and 5 is a light emitting element.

第3図において8は原稿面を照明するLEDアレイ光源
、9は8のLEDアレイ光源によって照明された原稿面
からの反射光を集光するレンズ系で、7は前記レンズ系
によって集光された光を光電変換する働きをもつ複数の
光電変換素子から成る一次元イメージセンサで、1oは
原稿である。
In FIG. 3, 8 is an LED array light source that illuminates the document surface, 9 is a lens system that collects the reflected light from the document surface illuminated by the 8 LED array light source, and 7 is the light that is focused by the lens system. It is a one-dimensional image sensor consisting of a plurality of photoelectric conversion elements that have the function of photoelectrically converting light, and 1o is a document.

以上のように構成された読み取り部において、以下その
動作について説明する。
The operation of the reading section configured as described above will be explained below.

電圧印加により発光素子から、発光された光はレンズ系
9によって集光され原稿面上を照明する。
Light emitted from the light emitting element by voltage application is collected by the lens system 9 and illuminates the surface of the document.

LEDアレイ光源によって照明された原稿面からの反射
光は原稿面の反射率に応じた強さになりレンズ系9によ
って集光され、−次元イメージセンサによって電気信号
に変換され、原稿の画像情報を読み取ることができる(
たとえば、日経エレクトロニクス 1984.9.10
,161〜194ページ)。
The reflected light from the document surface illuminated by the LED array light source has an intensity corresponding to the reflectance of the document surface, is focused by the lens system 9, and is converted into an electrical signal by the -dimensional image sensor, which converts the image information of the document. Can be read (
For example, Nikkei Electronics 1984.9.10
, pp. 161-194).

発明が解決しようとする問題点 従来のような構成のLEDアレイ光源は、発光素子の特
性上、単一波長の光しか発光できず、したがってカラー
の画像読み取り装置においては、原稿照明用の光源に、
赤、青、緑の3本のLEDアレイ光源を用意する必要が
ある。
Problems to be Solved by the Invention Due to the characteristics of the light emitting elements, LED array light sources with a conventional configuration can only emit light of a single wavelength. ,
It is necessary to prepare three LED array light sources: red, blue, and green.

問題点を解決するための手段 上記問題点を解決するために、本発明のLEDアレイ光
源は前記LEDアレイ光源の基板に、複数種類の異なる
発光波長の発光素子を配列し、独立に電圧印加をできる
ようにすることで、一本のLEDアレイで複数種類の色
の光を発光させるものである。
Means for Solving the Problems In order to solve the above problems, the LED array light source of the present invention arranges a plurality of types of light emitting elements with different emission wavelengths on the substrate of the LED array light source, and applies a voltage independently. By making this possible, a single LED array can emit light in multiple colors.

作用 本発明は上記した構成によって、一本のLEDアレイで
複数種類の色の光を発光させることを可能にし、LED
アレイ光源の小型化を可能にするものである。
Effect of the present invention With the above-described configuration, it is possible to emit light of multiple types of colors with one LED array, and the LED
This makes it possible to downsize the array light source.

実施例 以下、本発明の一実施例のLEDアレイ光源について、
図面を参照しながら説明する。
Example Below, regarding an LED array light source according to an example of the present invention,
This will be explained with reference to the drawings.

第1図(al、 (blは本発明のLEDアレイ光源の
構成図を示すもので第1図+81は本発明におけるLE
Dアレイ光源の構成図、第1図(blは本発明のLED
アレイ光源の、発光素子が配列された基板の図を示した
ものである。
Figure 1 (al, (bl) shows the configuration diagram of the LED array light source of the present invention, Figure 1 +81 shows the LED array light source of the present invention.
FIG. 1 is a block diagram of the D-array light source (bl is the LED of the present invention)
FIG. 3 shows a diagram of a substrate on which light emitting elements of an array light source are arranged.

第1図+81において、4は発光素子を配列する基板、
2は発光素子により発光される光を集光する働きをもつ
集光レンズ、3は前記集光レンズを発光素子上に固定す
る働きをもつホルダーで、■は発光素子である。
In Figure 1+81, 4 is a substrate on which light emitting elements are arranged;
Reference numeral 2 denotes a condensing lens that functions to condense light emitted by the light emitting element, 3 a holder that functions to fix the condensing lens on the light emitting element, and ■ the light emitting element.

第1図(b)において11は、赤色の光を発光する発光
素子(赤)、12は青色の光を発光する発光素子(青)
、13は緑色の光を発光する発光素子(緑)で、4は前
記11,12.13の発光素子を配列する基板である。
In FIG. 1(b), 11 is a light emitting element that emits red light (red), and 12 is a light emitting element that emits blue light (blue).
, 13 is a light emitting element (green) that emits green light, and 4 is a substrate on which the light emitting elements 11, 12, and 13 are arranged.

第1図(al、 (blのように構成されたLEDアレ
イ光源において以下その動作について説明する。
The operation of the LED array light source configured as shown in FIGS. 1(al and bl) will be described below.

基板4上に配列された各発光素子11,12゜13は、
それぞれ独立に外部から電圧印加が可能になっている。
Each light emitting element 11, 12゜13 arranged on the substrate 4 is
Voltage can be applied to each independently from the outside.

発光素子11,12.13により発光された光は発光素
子上にホルダーによって固定された集光レンズ2によっ
て集光されLEDアレイ光源前面にある原稿の原稿面を
照明する。
The light emitted by the light emitting elements 11, 12, and 13 is focused by a condenser lens 2 fixed on the light emitting element by a holder, and illuminates the document surface of the document in front of the LED array light source.

従来のLEDアレイ光源であれば、基板4上の発光素子
はすべて同じ波長の光しか発光する素子しか並んでおら
ず、LEDアレイ光源は単色光しか発光できない。した
がって、カラーの読み取りを行う場合には照明用に、赤
色、青色、緑色のLEDアレイ光源を3本使用する必要
があった。
In the case of a conventional LED array light source, all the light emitting elements on the substrate 4 are lined up with elements that only emit light of the same wavelength, and the LED array light source can only emit monochromatic light. Therefore, when performing color reading, it is necessary to use three red, blue, and green LED array light sources for illumination.

しかしながら、本発明のLEDアレイ光源では、異なる
発光波長の発光素子が基板上に複数種類配列されており
、かつそれぞれ独立に電圧印加が可能であるので、−木
のLEDアレイ光源で複数種類の波長の光を発光するこ
とが可能であり、カラーの読み取りを行う場合でもLE
Dアレイ光源は1本ですむことになる。
However, in the LED array light source of the present invention, multiple types of light emitting elements with different emission wavelengths are arranged on the substrate, and voltage can be applied to each independently. It is possible to emit a light of
Only one D-array light source is required.

発明の効果 以上のように本発明は、LEDアレイ光源において、前
記LEDアレイ光源の基板に、複数の異なる発光波長の
発光素子を配列し、独立に電圧印加をできるようにする
ことで、一本のLEDアレイで複数種類の色の光を発光
させることを可能にするものである。
Effects of the Invention As described above, the present invention provides an LED array light source in which a plurality of light emitting elements with different emission wavelengths are arranged on the substrate of the LED array light source and voltages can be applied independently. This allows the LED array to emit light of multiple colors.

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

第1図+81は本発明の一実施例におけるLEDアレイ
光源の構成図、fblは本発明のLEDアレイ光源の基
板の構成図、第2図(alは従来のLEDアレイ光源の
構成図、(′b)は従来のLEDアレイ光源の基板の構
成図、第3図は画像読み取り部の構成図である。 1・・・・・・発光素子群、2・・・・・・集光レンズ
、3・・・・・・ホルダー、4・・・・・・基板、5・
・・・・・発光素子群、7・・・・・・−次元イメージ
センサ、8・・・・・・12Dアレイ光源、9・・・・
・・レンズ系、10・・・・・・原稿、11・・・・・
・発光素子(赤)、12・・・・・・発光素子(青)、
13・・・・・・発光素子(緑)。
FIG. 1+81 is a block diagram of an LED array light source according to an embodiment of the present invention, fbl is a block diagram of a substrate of the LED array light source of the present invention, FIG. 2 (al is a block diagram of a conventional LED array light source, (' b) is a configuration diagram of a board of a conventional LED array light source, and FIG. 3 is a configuration diagram of an image reading section. 1...Light emitting element group, 2...Condensing lens, 3 ...Holder, 4...Substrate, 5.
...Light emitting element group, 7...-dimensional image sensor, 8...12D array light source, 9...
...Lens system, 10...Manuscript, 11...
・Light emitting element (red), 12...Light emitting element (blue),
13... Light emitting element (green).

Claims (1)

【特許請求の範囲】[Claims] 複数の発光素子が配列された基板と、前記複数の発光素
子上に位置し、発光素子によって発光された光を集光す
る働きをもつ集光レンズと、前記集光レンズを発光素子
上に固定する役割を持つホルダーとから成るLEDアレ
イ光源であって、前記基板上に異なる波長の光を発光す
る発光素子を複数種類配列したことを特徴とするLED
アレイ光源。
a substrate on which a plurality of light emitting elements are arranged; a condensing lens located on the plurality of light emitting elements and having a function of condensing light emitted by the light emitting elements; and fixing the condensing lens on the light emitting element. an LED array light source comprising a holder having the role of
Array light source.
JP62014523A 1987-01-23 1987-01-23 Led array light source Pending JPS63182963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62014523A JPS63182963A (en) 1987-01-23 1987-01-23 Led array light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62014523A JPS63182963A (en) 1987-01-23 1987-01-23 Led array light source

Publications (1)

Publication Number Publication Date
JPS63182963A true JPS63182963A (en) 1988-07-28

Family

ID=11863467

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62014523A Pending JPS63182963A (en) 1987-01-23 1987-01-23 Led array light source

Country Status (1)

Country Link
JP (1) JPS63182963A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537229A (en) * 1990-04-20 1996-07-16 Nikon Corporation Method and apparatus for rapid scanning of color images

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6145668A (en) * 1984-08-09 1986-03-05 Oki Electric Ind Co Ltd Two-color facsimile equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6145668A (en) * 1984-08-09 1986-03-05 Oki Electric Ind Co Ltd Two-color facsimile equipment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537229A (en) * 1990-04-20 1996-07-16 Nikon Corporation Method and apparatus for rapid scanning of color images
US5612794A (en) * 1990-04-20 1997-03-18 Nikon Corporation Light source for an image reading device
US5684610A (en) * 1990-04-20 1997-11-04 Nikon Corporation Method and apparatus for rapid scanning of color images
US5724160A (en) * 1990-04-20 1998-03-03 Nikon Corporation Optical scanner for line scanning an original
US6044180A (en) * 1990-04-20 2000-03-28 Nec Corporation Method and apparatus for rapid scanning of color images

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