JPH02157837A

JPH02157837A - Optical reader

Info

Publication number: JPH02157837A
Application number: JP63313170A
Authority: JP
Inventors: Masaaki Shitochi; 正明志土地; Michiaki Sato; 佐藤　道明
Original assignee: Sanyo Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd
Priority date: 1988-12-12
Filing date: 1988-12-12
Publication date: 1990-06-18

Abstract

PURPOSE:To read the top face and underside of a three-dimensional substance without changing its posture by providing a first read means to read an original in an underside direction and a second read means to read out in a top face direction. CONSTITUTION:When the underside image of a three-dimensional original 3 is read by a first optical system 4 of the first read means, an image sensor is erected, a first exposure light source 6 is lit up, the lower part of platen glass 5 is horizontally scanned by a driving motor, and the underside image of the original 3 is read. When the top face of the original 3 is read by a second optical system 19 of the second read means, the sensor 9 is laid down, the original 3 is irradiated in the top face direction by a second exposure light source, and thus the top face image is read through reflecting mirrors 15 and 16, and a second image formation lens 18. Consequently, only by placing the original 3 on the platen glass 5 of an original mounting stand, the top face and underside images can be simultaneously or successively read.

Description

【発明の詳細な説明】（イ）　産業上の利用分野本発明は、複写機や文書ファイル等の機器に使用され得
る光学読取装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an optical reading device that can be used in devices such as copying machines and document files.

（ロ）従来の技術従来の光学読取装置は、特開昭６２−１１１８３８号公
報や時開［５８−１６９１５９号公報に・記載されてい
るように、透明な原稿載置台上に載置された原稿を、当
該原稿載置台を透過して下方から読み取っていた。(B) Conventional technology A conventional optical reading device is a document placed on a transparent document mounting table, as described in Japanese Patent Application Laid-open No. 111838/1983 and Publication No. 58-169159 of the Jikai Publication. The original was read from below through the original placing table.

従って立体物の読取は困難であった。Therefore, it was difficult to read three-dimensional objects.

（ハ）　発明が解決しようとする課題前述のように従来の技術では、平面物の読取しかできず
、立体物の読取は困難であったので、その用途は狭いも
のにならざるを得なかった。(c) Problems to be solved by the invention As mentioned above, the conventional technology could only read flat objects and had difficulty reading three-dimensional objects, so its application had to be narrow. .

（ニ）課題を解決するための手段本発明は、透明な原稿載置台上に載置された原稿を前記
原稿１１置台を透過して光学的に読取る第１読取手段と
、前記原稿載置台上に載置された原稿を当該原稿載置台
を透過することなく、これに対峙する側から読取る第２
読取手段とが具備されている光学読取装置である。(d) Means for Solving the Problems The present invention provides a first reading means for optically reading an original placed on a transparent original placing table through the original 11 placing table; A second device reads the original placed on the original table from the side facing it without passing through the original placing table.
This is an optical reading device equipped with a reading means.

（ホ）作　用本発明には、原稿を下面から読取る第１読取手段と、Ｊ
ＪＫ稿を上方から読取る第２読取手段が備えられている
ので、立体物の姿勢を変更することなくその上面と下面
を読取ることが可能となる。(E) Function The present invention includes a first reading means for reading a document from the bottom surface, and a J.
Since the second reading means for reading the JK manuscript from above is provided, it is possible to read the top and bottom surfaces of the three-dimensional object without changing its orientation.

（へ）実施例図面はいずれら本発明の一実施例を示し、第１図は一部
破断斜視図、第２図は側面図である。(F) Embodiment The drawings each show an embodiment of the present invention, with FIG. 1 being a partially cutaway perspective view and FIG. 2 being a side view.

これらの図において、（１）は装置本体で内底部近傍に
水平方向に延在するガイドレール（２）が設けられ、こ
のガイドレール（２）に立体原稿（３）の下面を読取る
ための、第１読取手段としての第１光学系（４）が摺動
自在に装着されている。また、前記措置本体（１）の上
部には透明なプラテンガラス（５）が固設されており、
このプラテンガラス（５）上に前記立体原稿（３）が載
置される。前記第１光学系（４）には、プラテンガラス
（５）を通して立体原稿（，３）の下面を照明するため
の第１露光光源（６）と、スキャン用反射ミラー（７）
と、第１結像レンズ（８）と、イメージセンサ（９）と
が備えられている。なお、前記イメージセンサ（９）は
、支点（１σ）を中心として、９０°だけ揺動し得るよ
うに構成されており、立体原稿（３）の下面の像を読取
る際には、その受光面が鉛直となり（第２図点線姿勢）
、上面の像を読取る際には受光面が水平となる（第２図
実線姿勢）。In these figures, (1) is the main body of the apparatus, and a guide rail (2) extending horizontally near the inner bottom is provided, and this guide rail (2) is used to read the bottom surface of a three-dimensional original (3). A first optical system (4) serving as a first reading means is slidably mounted. In addition, a transparent platen glass (5) is fixed on the top of the measure body (1),
The three-dimensional original (3) is placed on this platen glass (5). The first optical system (4) includes a first exposure light source (6) for illuminating the lower surface of the three-dimensional original (3) through the platen glass (5), and a scanning reflection mirror (7).
, a first imaging lens (8), and an image sensor (9). The image sensor (9) is configured to be able to swing by 90 degrees around a fulcrum (1σ), and when reading the image of the bottom surface of the three-dimensional original (3), the light-receiving surface of the image sensor (9) is becomes vertical (dotted line posture in Figure 2)
, when reading the image on the upper surface, the light receiving surface becomes horizontal (solid line posture in Figure 2).

また、第１光学系（４）の側縁には、ベルト（１１）が
接続されており、当該ベルト（１１１は、アイドルプー
リ（１２）と、駆動用モータ（１３）の回転軸に固着さ
れている駆動プーリ（１４）との間に張架されている（
第２図参照）。Further, a belt (11) is connected to the side edge of the first optical system (4), and the belt (111) is fixed to the idle pulley (12) and the rotating shaft of the drive motor (13). The drive pulley (14) is stretched between the
(See Figure 2).

前記装置本体（１）の上方離間距離位置には、プラテン
ガラス（５）の上面全体の像を反射する第１反射鏡（１
５）およびこの第１反射鏡（１５）によって反射された
像を再度反射する第２反射鏡（１６）が備えられており
、前記第１反射鏡（１５）の四方に、前記プラテンガラ
ス（５）の上面全体を照明する第２８光光源＜１７１　
（第１図）が備えられている。A first reflecting mirror (1) that reflects an image of the entire upper surface of the platen glass (5) is located at a distance above the device main body (1).
5) and a second reflecting mirror (16) that re-reflects the image reflected by the first reflecting mirror (15), and the platen glass (5) is provided on all sides of the first reflecting mirror (15). ) illuminating the entire upper surface of the 28th light source <171
(Fig. 1) is provided.

前記第２反射鏡（１６）の下方には、第２結像レンズ（
１８）が備えられている。Below the second reflecting mirror (16), a second imaging lens (
18) is provided.

而して、第２図において、前記第１光学系（４）が右端
部に位置し、前記イメージセンサ（９）がその受光面が
水平となる姿勢を採った際に、立体原稿（３）の上面の
像がイメージセンサ（９）に結像されるように構成され
ている。In FIG. 2, when the first optical system (4) is located at the right end and the image sensor (9) assumes a posture in which its light receiving surface is horizontal, the three-dimensional original (3) The image sensor (9) is configured to form an image of the upper surface of the image sensor (9).

これらの第１反射鏡（１５）、第２反射鏡（１６）およ
び第２結像レンズ（１８）にて第２読取手段としての第
２光学系（１９）が構成されている。The first reflecting mirror (15), the second reflecting mirror (16), and the second imaging lens (18) constitute a second optical system (19) as a second reading means.

斯様にして、第１光学系（４）によって、立体原稿（３
）の下面の傑を読取る際には、前述のようにイメージセ
ンサ（９）を第１の姿勢（第２図実線姿勢）に起こし、
前記第１露光光源（６）を点灯させて、前記駆動モータ
（１３）を回転駆動すると、それに伴い第１光学系（４
１がプラテンガラス（５）の下部を水平方向に走査し、
立体原稿（３）の下面の像がイメージセンサ（９）によ
って読み取られることになる。In this way, the three-dimensional original (3) is scanned by the first optical system (4).
), as described above, raise the image sensor (9) to the first position (solid line position in Figure 2),
When the first exposure light source (6) is turned on and the drive motor (13) is rotationally driven, the first optical system (4) is turned on.
1 scans the bottom of the platen glass (5) in the horizontal direction,
The image of the lower surface of the three-dimensional original (3) is read by the image sensor (9).

また、第２光学系（１９）によって、前記立体原稿（３
）の上面を読取る際には、先ず前記イメージセンサ（９
）を第２の姿勢に倒し、前記第２露光光源（１７）を点
灯すればよい。そうすると、前記立体原稿（３）の上面
の全体像が、イメージセンサ（９）によって読取られる
ことになる。この際、前記第２光学系（１９）の焦点深
度が深く設定されていると、立体原稿（３）の上面に凹
凸が形成されていても、その上面の像は比較的鮮明に読
取られる。Further, the second optical system (19) allows the three-dimensional original (3
), first read the top surface of the image sensor (9).
) to the second posture and turn on the second exposure light source (17). Then, the entire image of the upper surface of the three-dimensional original (3) will be read by the image sensor (9). At this time, if the depth of focus of the second optical system (19) is set deep, even if unevenness is formed on the top surface of the three-dimensional original (3), the image on the top surface can be read relatively clearly.

なお、本実施例では、１個のイメージセンサ（９）が第
１光学系（４）と第２光学系（１９）で共用されている
が、各光学系（４１（１９１に夫々専用のイメージセン
サが備えられていてもよい。In this embodiment, one image sensor (9) is shared by the first optical system (4) and the second optical system (19), but each optical system (41 (191) has a dedicated image A sensor may also be provided.

（ト）発明の効果本発明では、透明な原稿載置上台に載置された原稿を前
記原稿載置台を透過して光学的に読取る第１読取手段と
、前記原稿載置台上に載置された原稿を当該原稿載置台
を透過することなく、これに対峙する側から読取る第２
読取手段とが具備されているので、原稿を原稿載置台上
に載置するだけで、その下面の１亀と上面の像を同時若
しくは逐次読取ることができる。(G) Effects of the Invention The present invention includes a first reading means for optically reading an original placed on a transparent upper original placing table through the original placing table; A second device reads the original from the side facing the original without passing through the original placing table.
Since the document is equipped with a reading means, by simply placing the document on the document table, the image on the bottom surface and the image on the top surface can be read simultaneously or sequentially.

また、立体原稿も鮮明に読取ることが可能となる。Furthermore, it becomes possible to clearly read three-dimensional originals.

従って、その用途は飛躍的に拡大する。Therefore, its uses will expand dramatically.

[Brief explanation of the drawing]

図面はいずれも本発明の一実施例を示し、第１図は斜視
図、第２図は側面図である。（１）・・・装置本体、（３）・・・立体原稿、（４）
・・・第１光学系（第１読取手段）１５）・・・プラテ
ンガラス（原稿載置台）、（６）・・・第１露光光源、
（７）・・・スキャン用反射ミラー、（８）・・・第１
結像レンズ、（９）・・イメージセンサ、（１５）・・
・第１反射鏡、（１６）・・第２反射鏡、（１７）・・
・第２露光光源、（１８）・・・第２結像レンズ、（１
９）・・・第２光学系。The drawings all show one embodiment of the present invention, with FIG. 1 being a perspective view and FIG. 2 being a side view. (1)...Device body, (3)...3D manuscript, (4)
. . . first optical system (first reading means) 15) . . . platen glass (document mounting table), (6) . . . first exposure light source,
(7)...Reflection mirror for scanning, (8)...First
Imaging lens, (9)... Image sensor, (15)...
・First reflecting mirror, (16)...Second reflecting mirror, (17)...
・Second exposure light source, (18)...Second imaging lens, (1
9)...Second optical system.

Claims

[Scope of Claims] 1. A first reading means for optically reading a document placed on a transparent document placing table through the document placing table; and a document placed on the document placing table. An optical reading device comprising: a second reading means for reading the document from the side facing the document mounting table without passing through the document mounting table. 2. The optical reading device according to claim 1, wherein the first reading means and the second reading means are provided with a common image sensor.