JPH07111562A - Image reading device - Google Patents

Image reading device

Info

Publication number
JPH07111562A
JPH07111562A JP5255392A JP25539293A JPH07111562A JP H07111562 A JPH07111562 A JP H07111562A JP 5255392 A JP5255392 A JP 5255392A JP 25539293 A JP25539293 A JP 25539293A JP H07111562 A JPH07111562 A JP H07111562A
Authority
JP
Japan
Prior art keywords
light emitting
leds
emitting elements
optical
image reading
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.)
Withdrawn
Application number
JP5255392A
Other languages
Japanese (ja)
Inventor
Toshiya Aikawa
敏哉 相川
Eisaku Maeda
栄作 前田
Nobuhiro Fujinawa
展宏 藤縄
Maki Suzuki
真樹 鈴木
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.)
Nikon Corp
Original Assignee
Nikon Corp
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 Nikon Corp filed Critical Nikon Corp
Priority to JP5255392A priority Critical patent/JPH07111562A/en
Publication of JPH07111562A publication Critical patent/JPH07111562A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To facilitate the operation to secure alignment of optical axes by moving in parallel plural light emitting elements of different colors arranged on plural rows by a drive means and reading the images with alignment secured between the optical axes of light emitting elements equivalent to one row and the optical axis of an optical system after these light emitting elements are turned on. CONSTITUTION:An image reading device is provided with a drive circuit 41 of a pulse motor 34 serving as a drive means which moves the LEDs 21, 22 and 23 arranged at a light source in sequence and in parallel to secure alignment between the optical axes of LEDs of a single row and the optical axis of an illumination part, a lighting circuit 42 which lights the LEDs 21-23 for each row, and a control circuit 43 which controls the operations of both circuits 41 and 42 and lights the LEDs 21-23 when the alignment is secured among those optical axes. Thus the LEDs 21-23 are moved in parallel by the motor 34, and the LEDs of a single row are turned on by the circuit 42 when the optical axes of these LEDs are aligned with the optical axis of the illumination part. Then an original is irradiated via the illumination part. In such a constitution, an optical member that is so far needed to secure alignment of optical axes of LEDs can be omitted.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、複数色の光源から発す
る光により原稿の画像を読み取る画像読取装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus for reading an image of an original by using light emitted from light sources of a plurality of colors.

【0002】[0002]

【従来の技術】図6乃至図9に画像入力装置の一例の構
成を示す。図6及び図7において、画像入力装置は、光
源1から発する照明光を原稿2上に導く光学系としての
照明部3と、原稿2を保持して移動するキャリッジ4
と、原稿2を透過する透過光を撮像素子であるライセン
サ(CCD)5上に結像する投影部6とから構成されて
いる。
2. Description of the Related Art FIGS. 6 to 9 show the construction of an example of an image input device. 6 and 7, the image input device includes an illumination unit 3 as an optical system that guides the illumination light emitted from the light source 1 onto the original 2, and a carriage 4 that holds and moves the original 2.
And a projection unit 6 that forms an image of transmitted light passing through the original 2 on a licensor (CCD) 5 which is an image pickup device.

【0003】照明部3は、板状のベース部材7上に、放
射上に光を発する光源1と、光の向きを変え、原稿面上
で線上になるようにする第1ミラー8、第2ミラー9と
が取り付けられてなっている。さらに光源1、第1ミラ
ー8、第2ミラー9を覆うように配置されると共に、照
明光の透過するスリット10を有する照明部蓋部材11
が、ベース部材7に爪状の引っかけ部11aによって固
定されている。光源1から発せられた光は、第1ミラー
8により原稿面上で線状になるように集光され、第2ミ
ラー9により原稿方向、すなわち垂直方向へ曲げられ
る。
The illumination unit 3 has a plate-shaped base member 7 on which a light source 1 which emits light is radiated, and a first mirror 8 which changes the direction of the light so that the light is linear on the document surface. A mirror 9 is attached. Further, the illumination section lid member 11 is arranged so as to cover the light source 1, the first mirror 8 and the second mirror 9, and has a slit 10 through which illumination light passes.
Are fixed to the base member 7 by hook-shaped hooks 11a. The light emitted from the light source 1 is condensed by the first mirror 8 so as to be linear on the document surface, and is bent by the second mirror 9 in the document direction, that is, in the vertical direction.

【0004】従って、第2ミラー9からの光が、蓋部材
11のスリット10を通過する付近では、細長い略長方
形の形状となる。蓋部材11に設けられるスリット10
は、照明光が通過するのに必要な大きさがあればよいの
で、光の形状よりやや大きい程度の長方形状になってい
る。また、スリット10の一部は、内側に板11bが曲
げられており、ベース部材7の前面に設けられた開口部
12からの外光が、スリット10を通って光源1に到達
するのを防いでいる。
Therefore, the light from the second mirror 9 has an elongated rectangular shape in the vicinity of passing through the slit 10 of the lid member 11. Slit 10 provided in lid member 11
Has a rectangular shape that is slightly larger than the shape of the light, as long as it has a size necessary for the illumination light to pass through. Further, a part of the slit 10 has a plate 11b bent inward, and prevents external light from the opening 12 provided in the front surface of the base member 7 from reaching the light source 1 through the slit 10. I'm out.

【0005】原稿2を挟んで保持する上キャリッジ4a
と、下キャリッジ4bとは、平行に配置された2本のガ
イドバー13に案内され、左右方向に移動可能である。
上キャリッジ4aの一部には、図示しないラック部が設
けられており、これと図示しないステッピングモータ等
により駆動されるピニオンにより、キャリッジ4が左右
に移動する。
An upper carriage 4a for holding the original 2 in between.
And the lower carriage 4b are guided by two guide bars 13 arranged in parallel, and are movable in the left-right direction.
A rack portion (not shown) is provided in a part of the upper carriage 4a, and the carriage 4 moves left and right by a pinion driven by this and a stepping motor (not shown).

【0006】投影部6は、第3ミラー14、レンズ1
5、CCD5と、全体を覆うと同時に原稿透過光の通過
するスリット16の設けられた投影部蓋部材17とから
構成されている。また、投影部蓋部材17のスリット1
6も、照明部蓋部材11と同様に、板17aが内側に曲
げられており、開口部12からの外光が、スリット16
を通って直接投影部6の内側に侵入するのを防いでい
る。また、照明部蓋部材11、投影部蓋部材17とも
に、それ自身外光を反射しないよう、表面は黒色で艶消
し処理がなされている。
The projection unit 6 includes a third mirror 14 and a lens 1.
5, a CCD 5, and a projection cover member 17 that covers the whole and is provided with a slit 16 through which the light transmitted through the document passes. In addition, the slit 1 of the projection unit cover member 17
6 also has the plate 17a bent inward as in the case of the illumination unit cover member 11, so that the external light from the opening 12 is reflected by the slit 16a.
It is prevented from directly invading the inside of the projection unit 6 through the. Further, both the illumination unit cover member 11 and the projection unit cover member 17 have a black surface and have a matte treatment so as not to reflect external light.

【0007】図8および図9に光源1の構成を示す。光
源1は、6個の青のLED21、4個の緑のLED22
及び2個の赤のLED23を有しており、各LED2
1,22,23は、ステム24に実装されている。また
6個の青のLED21は、一直線状に配列され、緑のL
ED22および赤のLED23は、平行の一直線上に交
互に配列されている。そして、各LED21,22,2
3から発し、光源1に設けられたミラー25の両面によ
り反射した光の光軸は、同一平面上に位置している。
FIG. 8 and FIG. 9 show the structure of the light source 1. Light source 1 consists of 6 blue LEDs 21 and 4 green LEDs 22
And two red LEDs 23, each LED2
1, 22, 23 are mounted on the stem 24. In addition, the six blue LEDs 21 are arranged in a straight line, and the green LEDs 21
The ED 22 and the red LED 23 are alternately arranged on a straight line. Then, each LED 21, 22, 2
The optical axes of the light emitted from the light source 3 and reflected by both surfaces of the mirror 25 provided in the light source 1 are located on the same plane.

【0008】6個のLED21,22,23は、導電性
材料で板状に形成されたステム24に実装されており、
各LED21,22,23の一極は、ステム24に接続
されている。また各LED21,22,23は、ステム
24にそれぞれ絶縁部材30を介して装着された電極2
6にワイヤ27を介して接続されている。さらにLED
21,22,23の周囲のステム24には、横方向への
発光を反射して上方へ射出する円錐状のリフレクタ部2
4aが形成されている。各リフレクタ部品24aで反射
した光は、反射ミラー25で反射して前方へ射出され、
さらにミラー8,9により原稿2上で線状になるように
集光される。
The six LEDs 21, 22, 23 are mounted on a stem 24 formed of a conductive material in a plate shape,
One pole of each LED 21, 22, 23 is connected to the stem 24. Further, each of the LEDs 21, 22, and 23 has an electrode 2 attached to the stem 24 via an insulating member 30.
6 via a wire 27. Further LED
The conical reflector portion 2 that reflects the emitted light in the lateral direction and emits it upward is provided on the stem 24 around the 21, 22, and 23.
4a is formed. The light reflected by each reflector part 24a is reflected by the reflection mirror 25 and emitted forward.
Further, the light is focused by the mirrors 8 and 9 so as to be linear on the original 2.

【0009】このとき、青のLED21から発した光
は、反射ミラー25の一方の面に形成された青反射膜2
5aで反射し、緑のLDE22及び赤のLED23から
発した光は、反射ミラー25の他方の面に形成された全
反射膜25bで反射する。この結果、光源1の前方から
見たときに、3色があたかも同一の位置から発光してい
るように見える。また青、緑、赤の3色の切り替えを電
気的に制御することで、原稿2を高速に読み取ることが
できる。なお、図8に示す符号28は、反射ミラー25
の出光面に設けられた45度プリズムである。
At this time, the light emitted from the blue LED 21 is reflected by the blue reflecting film 2 formed on one surface of the reflecting mirror 25.
The light reflected by 5a and emitted from the green LDE 22 and the red LED 23 is reflected by the total reflection film 25b formed on the other surface of the reflection mirror 25. As a result, when viewed from the front of the light source 1, the three colors appear to emit light from the same position. Further, the original 2 can be read at high speed by electrically controlling the switching of the three colors of blue, green and red. Reference numeral 28 shown in FIG. 8 is a reflection mirror 25.
It is a 45-degree prism provided on the light exit surface.

【0010】図10は、各LED21,22,23の点
灯時間とモーター駆動とCCD5の蓄積出力時間を示し
たタイミングチャート図である。図10における、タイ
ミングt101で赤を点灯させると同時にCCDの蓄積
を開始する。タイミングt102で赤の点灯を終了させ
ると同時に、CCDの蓄積も終了する。そして、タイミ
ングt103でCCDの出力を開始する。タイミングt
104で青を点灯させると同時にCCDの蓄積を開始す
る。タイミングt105で青の点灯を終了させると同時
に、CCDの蓄積も終了する。そしてタイミングt10
6でCCDの出力を開始する。タイミングt107で緑
を点灯させると同時にCCDの蓄積を開始する。タイミ
ングt108で緑の点灯を終了させると同時に、CCD
の蓄積も終了する。そして、タイミングt109でCC
Dの出力を開始する。その後、タイミングt111でモ
ータの駆動が開始され、原稿を副走査方向に1ライン分
移動し、タイミングt110の赤の点灯までにモータの
駆動を終了する。
FIG. 10 is a timing chart showing the lighting time of each LED 21, 22, 23, the motor drive, and the storage output time of the CCD 5. At timing t101 in FIG. 10, red is turned on, and at the same time, CCD accumulation is started. At the same time, the lighting of red is terminated at timing t102, and at the same time, the accumulation of the CCD is terminated. Then, at timing t103, the output of the CCD is started. Timing t
At 104, blue is turned on, and at the same time, CCD accumulation is started. At the timing t105, the lighting of blue is finished and at the same time, the storage of the CCD is finished. And timing t10
At 6, the CCD output is started. At the timing t107, green is turned on and at the same time, CCD accumulation is started. At the same time when the green lighting is finished at timing t108,
Accumulation of is also completed. Then, at timing t109, CC
The output of D is started. After that, the driving of the motor is started at the timing t111, the document is moved by one line in the sub-scanning direction, and the driving of the motor is finished by the lighting of red at the timing t110.

【0011】[0011]

【発明が解決しようとする課題】しかしながら、上記の
ように構成された従来の画像読取装置によると、ステム
24上に配置された2列のLED21及び22,23か
ら出射する光の光軸を一致させるために、反射ミラー2
5や三角プリズム28などの光学部材を設けなければな
らず、光源1の構造が複雑で大型化し、コスト高になる
という問題があった。また、各光路の光軸をあわせなけ
ればならず、部品精度を高くする必要があり、部品コス
トや組立コストも高くなる欠点があった。
However, according to the conventional image reading apparatus configured as described above, the optical axes of the lights emitted from the two rows of LEDs 21 and 22, 23 arranged on the stem 24 are made coincident with each other. Reflecting mirror 2
5, optical members such as the triangular prism 28 and the like must be provided, and there is a problem that the structure of the light source 1 is complicated and large, and the cost becomes high. In addition, the optical axes of the respective optical paths must be aligned, the precision of the components must be increased, and the cost of components and the cost of assembly are also high.

【0012】本発明はこのような状況に鑑みてなされた
もので、光学部品点数を削減し、コストの低減を図るこ
とができ、組立が容易な光源を有する画像読取装置を提
供することを目的とする。
The present invention has been made in view of the above circumstances, and an object thereof is to provide an image reading apparatus having a light source which can reduce the number of optical components and cost and can be easily assembled. And

【0013】[0013]

【課題を解決するための手段】上記目的を達成するため
に、請求項1に記載の画像読取装置は、少なくとも3色
の発光素子としてのLED21,22,23が複数列に
配置された発光手段としての光源1と、LED21,2
2,23から発する照明光を原稿2上に導く光学系とし
ての照明部3とを備える画像読取装置において、光源1
に配置された複数列のLED21,22,23を順次平
行移動し、1列のLEDの光軸を照明部3の光軸に一致
させる駆動手段としてのパルスモータ34の駆動回路4
1と、LED21,22,23を各列ごとに点灯させる
点灯手段としての点灯回路42と、駆動回路41と点灯
回路42との作動を制御し、前記各光軸の一致時にLE
D21,22,23を点灯させる制御手段としての制御
回路43とを備えることを特徴とする。
In order to achieve the above object, the image reading apparatus according to claim 1 is a light emitting means in which LEDs 21, 22, and 23 as light emitting elements of at least three colors are arranged in a plurality of rows. Light source 1 and LEDs 21,2
In the image reading apparatus including the illumination unit 3 serving as an optical system that guides the illumination light emitted from the light sources 2 and 23 onto the document 2, the light source 1
Drive circuit 4 of the pulse motor 34 as a drive means for sequentially moving the plurality of rows of LEDs 21, 22, 23 arranged in parallel in parallel with each other to align the optical axis of the LEDs in one row with the optical axis of the illumination unit 3.
1 and the lighting circuit 42 as a lighting means for lighting the LEDs 21, 22, and 23 for each column, and the operation of the drive circuit 41 and the lighting circuit 42 is controlled, and when the optical axes match, the LE is controlled.
The control circuit 43 is provided as a control means for lighting the D21, 22, 23.

【0014】請求項2に記載の画像読取装置は、LED
は青、赤、緑の3色のLED21,23,22からな
り、青のLED21と赤及び緑のLED23,22とが
それぞれ1列上に配置されたことを特徴とする。
An image reading apparatus according to a second aspect is an LED.
Is composed of LEDs 21, 23, 22 of three colors of blue, red and green, and the blue LED 21 and the red and green LEDs 23, 22 are arranged in one row respectively.

【0015】請求項3に記載の画像読取装置において
は、LEDは青、赤、緑の3色のLED21,23,2
2からなり、それぞれのLED21,23,22が異な
る1列上に配置されたことを特徴とする。
In the image reading device according to the third aspect, the LEDs are LEDs 21, 23, 2 of three colors of blue, red and green.
2 and each LED 21, 23, 22 is arranged in a different row.

【0016】[0016]

【作用】上記構成の画像読取装置においては、パルスモ
ータ34により光源1に配置された複数列のLED2
1,22,23を平行移動し、1つの列のLEDの光軸
と照明部3の光軸とが一致したときに点灯回路42によ
りその列のLEDを点灯して、照明部3を介して原稿2
を照射する。この構成により各列のLED21,22,
23の光軸を一致させるために従来必要であった光学部
材を不要とすることができる。
In the image reading apparatus having the above structure, the plurality of rows of LEDs 2 arranged on the light source 1 by the pulse motor 34 are arranged.
1, 22, 23 are moved in parallel, and when the optical axis of the LED in one row and the optical axis of the illuminating section 3 coincide with each other, the lighting circuit 42 illuminates the LED in that row, and the illuminating section 3 is used. Manuscript 2
Irradiate. With this configuration, each row of LEDs 21, 22,
It is possible to eliminate the need for an optical member that has been conventionally required to match the optical axes of 23.

【0017】[0017]

【実施例】以下、本発明の画像読取装置の一実施例を図
面を参照して説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the image reading apparatus of the present invention will be described below with reference to the drawings.

【0018】図1及び図2に本発明の一実施例の構成を
示す。図1において、図6に示す従来例の部分と対応す
る部分には同一の符号を付してあり、その説明は適宜省
略する。本実施例の特徴は、光源1の構成にあり、光源
1を備える画像読取装置の他の部分の構成は、図5及び
図6に示す従来例と同様である。
1 and 2 show the configuration of an embodiment of the present invention. In FIG. 1, portions corresponding to those of the conventional example shown in FIG. 6 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. The feature of this embodiment lies in the configuration of the light source 1, and the configuration of the other part of the image reading apparatus including the light source 1 is the same as that of the conventional example shown in FIGS. 5 and 6.

【0019】図1において、光源1は、LED21,2
2,23が設けられた長方形板状のステム31と、ステ
ム31の裏面に固定され、送りネジ32が螺合するリブ
33と、送りネジ32を回転駆動するパルスモータ34
とから構成されている。ステム31に設けられたLED
21,22,23の配置は、図8に示す従来例と同様で
あり、6個の青のLED21が1列目に配置され、4個
の緑のLED22と2個の赤のLED23とが交互に平
行な2列目に配置されている。またパルスモータ34は
ベース部材7に固定され、ステム31は図示しない係止
部材により、ベース部材7に対して回転が係止され、昇
降可能に支持されている。
In FIG. 1, the light source 1 includes LEDs 21,2.
2 and 23 are provided, a rectangular plate-shaped stem 31, a rib 33 fixed to the back surface of the stem 31 and screwed with a feed screw 32, and a pulse motor 34 for rotationally driving the feed screw 32.
It consists of and. LED provided on the stem 31
The arrangement of 21, 22, and 23 is the same as that of the conventional example shown in FIG. 8. Six blue LEDs 21 are arranged in the first row, and four green LEDs 22 and two red LEDs 23 are alternately arranged. It is arranged in the second row parallel to. Further, the pulse motor 34 is fixed to the base member 7, and the stem 31 is locked by the locking member (not shown) in rotation with respect to the base member 7 and is supported so as to be movable up and down.

【0020】図2は、光源1の駆動を制御する機能ブロ
ック図である。パルスモータ34は、駆動回路41によ
り回転駆動され、LED21,22,23は点灯回路4
2により点滅される。また駆動回路41及び点灯回路4
2は、制御回路43により制御される。
FIG. 2 is a functional block diagram for controlling the driving of the light source 1. The pulse motor 34 is rotationally driven by the drive circuit 41, and the LEDs 21, 22, and 23 turn on the lighting circuit 4.
Flashes by 2. Further, the drive circuit 41 and the lighting circuit 4
2 is controlled by the control circuit 43.

【0021】図3は、各LED21,22,23の点灯
時間とパルスモータ34の駆動時間と、CCD5の蓄積
出力時間を示したタイミングチャートである。まず青の
LED21から照射された光が第1ミラー8に至るよう
にステム31の高さを調節しておき、図3におけるタイ
ミングt1で青のLED21を点灯させると同時に、C
CD5による電荷の蓄積を開始する。タイミングt2で
青のLED21の点灯を終了させると同時に、CCD5
の蓄積も終了する。そしてタイミングt3でCCD5の
出力を開始する。
FIG. 3 is a timing chart showing the lighting time of each LED 21, 22, 23, the driving time of the pulse motor 34, and the storage output time of the CCD 5. First, the height of the stem 31 is adjusted so that the light emitted from the blue LED 21 reaches the first mirror 8, and the blue LED 21 is turned on at the timing t1 in FIG.
The charge accumulation by CD5 is started. At the timing t2, the lighting of the blue LED 21 is finished, and at the same time, the CCD 5
Accumulation of is also completed. Then, at timing t3, the output of the CCD 5 is started.

【0022】CCD5からの出力が終了すると、タイミ
ングt4でステップモータ35の駆動を開始し、赤のL
ED23及び緑のLED22から照射された光が第1ミ
ラー8に至るように、ステム31の高さの調節を行な
う。タイミングt5で高さ調節が終了し、ステップモー
タ35の回転が停止すると、タイミングt6で赤のLE
D23を点灯させると同時に、CCD5による電荷の蓄
積を開始する。タイミングt7で赤のLED23の点灯
を終了させると同時に、CCD5の蓄積も終了する。そ
して、タイミングt8でCCD5の出力を開始する。
When the output from the CCD 5 is completed, the driving of the step motor 35 is started at the timing t4, and the red L
The height of the stem 31 is adjusted so that the light emitted from the ED 23 and the green LED 22 reaches the first mirror 8. When the height adjustment ends at timing t5 and the rotation of the step motor 35 stops, at timing t6, the red LE
At the same time when D23 is turned on, the charge accumulation by the CCD 5 is started. At the timing t7, the lighting of the red LED 23 is finished, and at the same time, the storage of the CCD 5 is finished. Then, at timing t8, the output of the CCD 5 is started.

【0023】CCD5からの出力が終了すると、タイミ
ングt9で緑のLED22を点灯させると同時に、CC
D5による電荷の蓄積を開始する。タイミングt10で
緑のLED22の点灯を終了させると同時に、CCD5
の蓄積も終了する。そしてタイミングt11でCCD5
の出力を開始する。
When the output from the CCD 5 is completed, the green LED 22 is turned on at the timing t9, and at the same time, the CC
The charge accumulation by D5 is started. At the timing t10, the lighting of the green LED 22 is finished, and at the same time, the CCD 5
Accumulation of is also completed. Then, at timing t11, the CCD 5
Start the output of.

【0024】CCD5からの出力が終了すると、タイミ
ングt12でステップモータ35の逆方向の駆動を開始
し、青のLED21から照射された光が第1ミラー8に
至るように、ステム31の高さ調節を行ない、元の状態
に戻す。以下、原稿2を副走査方向に1ライン分移動さ
せ、同様の動作を繰り返して順次原稿2の読取りを行な
う。
When the output from the CCD 5 is completed, the driving of the step motor 35 in the reverse direction is started at timing t12, and the height of the stem 31 is adjusted so that the light emitted from the blue LED 21 reaches the first mirror 8. To restore the original state. Thereafter, the document 2 is moved by one line in the sub-scanning direction, and the same operation is repeated to sequentially read the document 2.

【0025】本実施例によれば、2列のLED21,2
2,23をステップモータ35により移動させて、必要
な1列分のLEDを光路中に位置させるようにしたの
で、従来必要であった反射ミラーや三角プリズムなどの
光学部材は不要となり、組立ても容易となって、コスト
の低減を図ることができる。
According to this embodiment, the two rows of LEDs 21, 2 are arranged.
2, 2 and 23 are moved by the step motor 35 so that the required one row of LEDs can be positioned in the optical path. Therefore, optical members such as a reflection mirror and a triangular prism, which have been conventionally required, are unnecessary, and even when assembled. It becomes easier and the cost can be reduced.

【0026】上記実施例では、ステム31に設けられた
LED21,22,23が2列に配置された場合につい
て説明したが、図4に示すように、各LED21,2
2,23をそれぞれ別の列に配置し、3列としてもよ
い。この場合は、図5のタイミングチャートで示すよう
に、ステップモータ35により各色の読取り毎にタイミ
ングt14,t15でLED列を移動し、3色の読取り
が終了したのちにタイミングt16でLED列を元の位
置に戻せばよい。
In the above embodiment, the case where the LEDs 21, 22, 23 provided on the stem 31 are arranged in two rows has been described, but as shown in FIG.
It is also possible to arrange 2 and 23 in different columns and to have 3 columns. In this case, as shown in the timing chart of FIG. 5, the LED row is moved at timings t14 and t15 each time the color is read by the step motor 35, and after the reading of three colors is completed, the LED row is restored at the timing t16. Return to the position.

【0027】上記実施例ではLED列の移動させる駆動
手段としてステップモータ35を用いた場合について説
明したが、他の駆動手段、例えば圧電素子、ソレノイド
などを用いてもよい。
In the above embodiment, the case where the step motor 35 is used as the driving means for moving the LED array has been described, but other driving means such as a piezoelectric element or a solenoid may be used.

【0028】[0028]

【発明の効果】以上説明したように、本発明の画像読取
装置によれば、複数列に配置された複数色の発光素子を
駆動手段により平行移動させ、1列分の発光素子の光軸
を光学系の光軸に一致させて点灯して画像を読取るよう
にしたので、従来光軸を一致させるために必要であった
光学部材が不要となり、組立ても容易となって、コスト
の低減を図ることができる。
As described above, according to the image reading apparatus of the present invention, the light emitting elements of a plurality of colors arranged in a plurality of rows are moved in parallel by the driving means, and the optical axes of the light emitting elements for one row are moved. Since the image is read by turning on the light so as to match the optical axis of the optical system, the optical member that was conventionally required to match the optical axis is not required, and the assembly is easy and the cost is reduced. be able to.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の画像読取装置の一実施例の要部の構成
を示す斜視図である。
FIG. 1 is a perspective view showing a configuration of a main part of an embodiment of an image reading apparatus of the present invention.

【図2】本発明の一実施例の制御機能を示すブロック図
である。
FIG. 2 is a block diagram showing a control function of an embodiment of the present invention.

【図3】本発明の一実施例の動作を説明するタイミング
チャートである。
FIG. 3 is a timing chart illustrating the operation of the exemplary embodiment of the present invention.

【図4】本発明の他の実施例による光源の構成を示す側
面図である。
FIG. 4 is a side view showing a configuration of a light source according to another embodiment of the present invention.

【図5】図4に示す実施例の動作を説明するタイミング
チャートである。
5 is a timing chart explaining the operation of the embodiment shown in FIG.

【図6】従来の画像読取装置の一例の構成を示す部分破
断側面図である。
FIG. 6 is a partially cutaway side view showing the configuration of an example of a conventional image reading apparatus.

【図7】図6の照明部及び投影部の構成を示す分解斜視
図である。
7 is an exploded perspective view showing a configuration of an illumination unit and a projection unit of FIG.

【図8】図6の光源の構成を示す縦断面図である。8 is a vertical cross-sectional view showing the configuration of the light source of FIG.

【図9】図8の部分破断平面図である。9 is a partially cutaway plan view of FIG.

【図10】従来の画像読取装置の一例の動作を説明する
タイミングチャートである。
FIG. 10 is a timing chart illustrating an operation of an example of a conventional image reading apparatus.

【符号の説明】[Explanation of symbols]

1 光源(発光手段) 2 原稿 3 照明部(光学系) 21,22,23 LED(発光素子) 34 パルスモータ(駆動手段) 42 点灯回路(点灯手段) 43 制御回路(制御手段) DESCRIPTION OF SYMBOLS 1 light source (light emitting means) 2 document 3 illumination unit (optical system) 21, 22, 23 LED (light emitting element) 34 pulse motor (driving means) 42 lighting circuit (lighting means) 43 control circuit (control means)

フロントページの続き (72)発明者 鈴木 真樹 東京都千代田区丸の内3丁目2番3号 株 式会社ニコン内Front page continuation (72) Inventor Maki Suzuki 3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Nikon Corporation

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 少なくとも3色の発光素子が複数列に配
置された発光手段と、 前記発光手段から発する照明光を原稿上に導く光学系と
を備える画像読取装置において、 前記発光手段に配置された複数列の前記発光素子を順次
平行移動し、1列の前記発光素子の光軸を前記光学系の
光軸に一致させる駆動手段と、 前記発光素子を各列毎に点灯させる点灯手段と、 前記駆動手段と前記点灯手段との作動を制御し、前記各
光軸の一致時に前記発光素子を点灯させる制御手段とを
備えることを特徴とする画像読取装置。
1. An image reading apparatus comprising: a light emitting means in which light emitting elements of at least three colors are arranged in a plurality of rows; and an optical system for guiding illumination light emitted from the light emitting means onto a document. A plurality of rows of the light emitting elements are sequentially moved in parallel, and a driving means for aligning the optical axis of the one row of the light emitting elements with the optical axis of the optical system; and a lighting means for lighting the light emitting elements in each row. An image reading apparatus comprising: a control unit that controls the operation of the driving unit and the lighting unit and that turns on the light emitting element when the optical axes coincide with each other.
【請求項2】 前記発光素子は青、赤、緑の3色の発光
素子からなり、青の発光素子と赤及び緑の発光素子とが
それぞれ1列上に配置されたことを特徴とする請求項1
記載の画像読取装置。
2. The light emitting element comprises light emitting elements of three colors of blue, red and green, and the blue light emitting element and the red and green light emitting elements are arranged in a row. Item 1
The image reading device described.
【請求項3】 前記発光素子は青、赤、緑の3色の発光
素子からなり、それぞれの発光素子が異なる1列上に配
置されたことを特徴とする請求項1記載の画像読取装
置。
3. The image reading apparatus according to claim 1, wherein the light emitting elements are light emitting elements of three colors of blue, red, and green, and the respective light emitting elements are arranged in different rows.
JP5255392A 1993-10-13 1993-10-13 Image reading device Withdrawn JPH07111562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5255392A JPH07111562A (en) 1993-10-13 1993-10-13 Image reading device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5255392A JPH07111562A (en) 1993-10-13 1993-10-13 Image reading device

Publications (1)

Publication Number Publication Date
JPH07111562A true JPH07111562A (en) 1995-04-25

Family

ID=17278130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5255392A Withdrawn JPH07111562A (en) 1993-10-13 1993-10-13 Image reading device

Country Status (1)

Country Link
JP (1) JPH07111562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004184641A (en) * 2002-12-02 2004-07-02 Nec Viewtechnology Ltd Projection type display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004184641A (en) * 2002-12-02 2004-07-02 Nec Viewtechnology Ltd Projection type display device

Similar Documents

Publication Publication Date Title
US4841358A (en) Device for reading a color image from an original document with reciprocating filter
JP3893184B2 (en) Electronic component mounting equipment
JPH07111562A (en) Image reading device
JPH07211943A (en) Light source device
JPH0918655A (en) Linear light source device
JPH07209764A (en) Light source device
JPH08242335A (en) Light source device
JPH08167972A (en) Image input device
JPH08223365A (en) Image input device and light emitting device
JPS63166355A (en) Reader
JPH07250207A (en) Image reader
JPH08154150A (en) Image input device and light emitting device
US7327499B2 (en) Image reading apparatus
JPH0787266A (en) Light source device
JPH07322013A (en) Light source device
JPH0389663A (en) Image reader
JPH07154546A (en) Picture reader
JPH07170374A (en) Optical apparatus for illumination
JP4051754B2 (en) Image input device
JPH08331396A (en) Image input device
JPH11177768A (en) Image reader
JPH08154151A (en) Image input device and light emitting device
JPH07212536A (en) Illumination optical device
JPH0799558A (en) Picture read system
JPH08223366A (en) Image input device and image input method

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20001226