JPS58202661A - Image pickup device - Google Patents
Image pickup deviceInfo
- Publication number
- JPS58202661A JPS58202661A JP57086318A JP8631882A JPS58202661A JP S58202661 A JPS58202661 A JP S58202661A JP 57086318 A JP57086318 A JP 57086318A JP 8631882 A JP8631882 A JP 8631882A JP S58202661 A JPS58202661 A JP S58202661A
- Authority
- JP
- Japan
- Prior art keywords
- original
- photoelectric conversion
- image
- light
- mirror
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
- H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
- H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Image Processing (AREA)
- Facsimile Heads (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、ファクシミリ、複写機等の撮像装置に関し、
特に、複数個の光電変換素子で構成さnる撮像装置に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an imaging device such as a facsimile machine or a copying machine.
In particular, the present invention relates to an imaging device configured with a plurality of photoelectric conversion elements.
従来のこの種の装置は第1回し)に示す如く、レンズと
光電変換素子を一組として複数組で構成さnていた。As shown in Part 1), a conventional device of this type is composed of a plurality of sets each including a lens and a photoelectric conversion element.
一般に、との光電変換素子としては、例えばCCD(電
荷結合素子)が使用さしている。現在商業的に利用可能
なCCDは2048 ビットのものがある。Generally, as a photoelectric conversion element, for example, a CCD (charge coupled device) is used. There are currently 2048 bit CCDs available commercially.
これを用いて84版の原稿を読取ると解像度は8ビット
/mmとなり粗いものとなる。そこで解像度ヲ高めるた
めに2048ビツトのCCDを2個用いて84版原稿を
16ビツ)7mmで、父はA3版原稿を13ビツト/朋
で読取るようにしている。こnについては例えば特願昭
53−1.21..805に開示さnている。この種の
装置は構成上価格が上がるばかりか、さらに重要な問題
は、光電変換素子の原稿読取り上のつなぎ目に対応する
原稿面が原稿載置ガラス板から浮き上がっていると、そ
の部分の原稿を二重に読取ってしまうということである
。If an 84-version original is read using this, the resolution will be 8 bits/mm and will be coarse. Therefore, in order to increase the resolution, two 2048-bit CCDs are used to read 84-size manuscripts at 16 bits/7mm, and my father reads A3-size manuscripts at 13 bits/7mm. Regarding this, for example, Japanese Patent Application No. 53-1.21. .. 805. Not only is this type of device expensive due to its configuration, but an even more important problem is that if the document surface corresponding to the joint in the document reading area of the photoelectric conversion element is lifted from the document placement glass plate, that portion of the document will be removed. This means that it is read twice.
こ扛を第1図(a) 、 (+))で説明する。通常、
原稿4は原稿載置ガラス板5に密着さしゃこの時、原稿
4のXaの範囲の画像はレンズ1aを通って光電変換素
子2aに投影さnl一方原稿4のxbの範囲の画像はレ
ンズ1bを通って光電変換素子2bに投影さn光電変換
素子2a 、2bによって原稿4の金山が読取らnる。This method will be explained with reference to Fig. 1 (a) and (+)). usually,
When the original 4 is brought into close contact with the original glass plate 5, the image in the range Xa of the original 4 is projected onto the photoelectric conversion element 2a through the lens 1a, while the image in the range xb of the original 4 is projected onto the photoelectric conversion element 2a through the lens 1a. The gold spots on the original 4 are then projected onto the photoelectric conversion element 2b and read by the photoelectric conversion elements 2a and 2b.
ところが、第1図(b)に示す如く、原稿4がガラス板
5よりΔ11だけ浮き上がって載置さ肚ると、原稿4の
△Sの領域の画像はレンズ1aを通って光電変換素子2
aに投影さ扛ると同時に、レンズ1bを通って光電変換
素子2bにも投影されてし捷い、従って二重に読取らし
ることになる。この状態で光電変換素子2a 。However, as shown in FIG. 1(b), when the original 4 is lifted up from the glass plate 5 by Δ11 and placed, the image of the area ΔS of the original 4 passes through the lens 1a and is transferred to the photoelectric conversion element 2.
At the same time as the light is projected onto the photoelectric conversion element 2b through the lens 1b, the light is read out twice. In this state, the photoelectric conversion element 2a.
2bを走査しファクシミリや複写機のようにコピーをと
ると△Sの領域の画像が二重読取り画像としてコピーさ
扛てしまう。この二重読取り巾△Sは、半画角をθ、原
稿の浮き上りを△11とするとΔs = 2・△hel
Aflθ で力えら肚る。第2図(a)は正常な場合の
コピー例、第2図(b)は二重読取り画像のコピーの例
を示す。If 2b is scanned and a copy is made using a facsimile or a copying machine, the image in the ΔS area will be copied as a double-read image. This double reading width △S is calculated as follows: Δs = 2・△hel
Aflθ makes me sad. FIG. 2(a) shows an example of copying in a normal case, and FIG. 2(b) shows an example of copying a double-read image.
本発明は、このような二重読取りがなく解像度を向上で
きるようにすることを目的とし、原稿画像光を収束する
ための1個のレンズと、該レンズの収束光路上に配設さ
するハーフミラ−と、該ハーフミラ−による透過収束光
を″□光電変換するだめの第1の光電変換素子と反射収
束光を光電変換するだめの第2の光電変換素子とが交互
に置設さ扛徴とする撮像装置を提供するものである。The present invention aims to improve the resolution without such double reading, and includes a lens for converging document image light and a half mirror disposed on the converging optical path of the lens. - and a first photoelectric conversion element for photoelectrically converting the transmitted convergent light by the half mirror and a second photoelectric conversion element for photoelectrically converting the reflected convergent light are arranged alternately. The present invention provides an imaging device that performs the following functions.
以下、図面について詳細に説明する。The drawings will be described in detail below.
第3図は本発明の撮像装置の一実施例であって。FIG. 3 shows an embodiment of the imaging device of the present invention.
■はレンズ、2a、21)は光電変換素子、3はノ・−
フミラー、4は原稿、5は原稿載置ガラス板、6はラン
プ、7はミラーである。■ is a lens, 2a, 21) is a photoelectric conversion element, 3 is a -
4 is a document, 5 is a glass plate for placing the document, 6 is a lamp, and 7 is a mirror.
原稿載置ガラス板5上にコピーしたい画像面を下向きに
原稿4が載置さし、一方光路を遮らないようにかつ厚み
のある原稿の周辺にできる影を除去するため通常は1対
或いは反射板と対をなして(図示せず)配設さnたラン
プ6によって下方より原稿4を照射する。原稿面から反
射さ扛た画像光は反射ミラー7によって反射さした後、
レンズ1を通過する画像光のみが収束さnなからノ・−
フミラー3に至る。この反射ミラー7は光学系をコンパ
クトにするために設けらしたものでありスペースが許せ
ば省略できる。ノ・−フミラー3に達した収束画像光は
ハーフミラ−3によって透過光と反射光に分かn原稿4
のOA分は光電変換素子2a 3−
の0IAIに、08分は光電変換素子2bの01B1に
実像を結ぶ。との時、01及び011は図から明らかな
ように光軸が互いに共有することになり、従来の二重読
取りを除去できる。このことを本実施例の概略構成図第
4図(a)及び第4図(b)で更に詳述する。The original 4 is placed on the original placing glass plate 5 with the image surface to be copied facing downward, and usually one pair or a reflective plate is placed so as not to block the optical path and to remove shadows that may appear around the thick original. The document 4 is irradiated from below by a lamp 6 arranged in a pair with the plate (not shown). After the image light reflected from the document surface is reflected by the reflection mirror 7,
Only the image light passing through lens 1 is converged.
This brings us to Humira 3. This reflecting mirror 7 is provided to make the optical system compact, and can be omitted if space permits. The convergent image light that has reached the half mirror 3 is divided into transmitted light and reflected light by the half mirror 3.
A real image is formed at the OA portion of the photoelectric conversion element 2a 3- at 0IAI, and a real image is formed at the 08 minute point at 01B1 of the photoelectric conversion element 2b. As is clear from the figure, when 01 and 011 share the optical axis with each other, the conventional double reading can be eliminated. This will be explained in more detail with reference to FIGS. 4(a) and 4(b), which are schematic configuration diagrams of this embodiment.
第4図(a) 、 (b)は模型的に示してあり、第3
図のランプ6、反射ミラー7は省略した。ハーフミラ−
3は適当に傾斜(例えば4.5 ″)に配設さn、光電
変換素子2aは平面に配置さn(背面が描かnている)
、光電変換素子2bは立面に配置さn(上側面が描かし
ている)ている。第4図(a)は原稿4が原稿載置ガラ
ス板5に密着載置さnた状態を示し、この状態での読取
り画像は第2図(a)と同様に正常な像として得ら扛る
。Figures 4(a) and 4(b) are shown schematically, and the third
The lamp 6 and reflection mirror 7 in the figure are omitted. half mirror
3 is arranged at an appropriate inclination (for example, 4.5''), and the photoelectric conversion element 2a is arranged on a flat surface (the back side is shown).
, the photoelectric conversion element 2b is arranged vertically (the upper side is drawn). FIG. 4(a) shows a state in which the original 4 is placed in close contact with the original placing glass plate 5, and the read image in this state is not obtained as a normal image as in FIG. 2(a). Ru.
一方、第4図(b)は第1図(b)と同様に原稿4がガ
ラス板5からΔhだけ浮いた状態を示しである。この場
合も原稿画像光のそnぞnの光電変換素子へ分割さnだ
部分の光軸が共有であるため第1図(b)に現わ肚たΔ
Sなる二重読取り部は生せず第2図4−
(a)と同様に正常な像として読取ら詐る。On the other hand, FIG. 4(b) shows a state in which the original 4 is lifted from the glass plate 5 by Δh, similar to FIG. 1(b). In this case as well, since the optical axis of the n portions in which the original image light is divided into the n photoelectric conversion elements is shared, the difference Δ shown in FIG.
A double reading section S does not occur and the image is falsely read as a normal image as in FIG. 2-4-(a).
第5図及び第6図は本発明の撮像装置の他の実施例であ
り、第5図は光電変換素子を3個使用した場合の例で、
第6図は9個使用した場合であるがレンズ1の性能が許
せば光電変換素子は任意に数を選ぶことができるため解
像力の向」二が容易に達成さnる。当然こし等の場合も
二重読取りという従来の欠点は除去できる。FIGS. 5 and 6 show other embodiments of the imaging device of the present invention, and FIG. 5 is an example in which three photoelectric conversion elements are used.
Although FIG. 6 shows the case where nine photoelectric conversion elements are used, if the performance of the lens 1 permits, the number of photoelectric conversion elements can be arbitrarily selected, and therefore the resolution can be easily achieved. Naturally, the conventional drawback of double reading can also be eliminated in cases such as a strainer.
第7図は光電変換素子(CCD イメージセンサ)を
2個使用した、つまり第3図のような構成における撮像
装置の制御回路ブロック図である。第8図はそのタイミ
ングチャートである。操作パネルのスイッチ(図示せず
)又は適当な処理装置(図示せず)から撮像開始信号を
受けるとCCDスタートストップ論理回路11はクロッ
ク回路12よりのクロックパルスを受は画像読取り制御
を開始する。CCD制御回路13.14は適当なタイミ
ングでCCDイメージセンサ2a 、 2bに種々のパ
ルス、例えば転送ハルス、転送ゲートパルス、リセット
パルス等を供給する。こt等のパルスはCCD制御回路
13゜14に含ましるCCDドライバを経由してCCD
イメージセンサ2a、2bに供給さ牡、ビデオ出力がC
CDイメージセンサ2a、2bによりそtぞ几出力さ扛
る。FIG. 7 is a control circuit block diagram of an imaging apparatus using two photoelectric conversion elements (CCD image sensors), that is, in the configuration shown in FIG. 3. FIG. 8 is a timing chart thereof. Upon receiving an imaging start signal from a switch on the operation panel (not shown) or a suitable processing device (not shown), the CCD start/stop logic circuit 11 receives clock pulses from the clock circuit 12 and starts image reading control. The CCD control circuits 13 and 14 supply various pulses, such as transfer Hals, transfer gate pulses, and reset pulses, to the CCD image sensors 2a and 2b at appropriate timings. These pulses are sent to the CCD via the CCD driver included in the CCD control circuit 13 and 14.
The video output is supplied to the image sensors 2a and 2b.
The CD image sensors 2a and 2b directly output the data.
こ扛等のビデオ出力はヒデオアンプ15.16 、サン
プルホールド回路1.7,18 、アンプ19.20を
経てアナログスイッチ21によってCCDイメージセン
サ2aとCCDイメージセンサ2bとのビデオ出力かつ
なき合わさして連続的な画信号になる。The video outputs of these devices pass through a video amplifier 15.16, a sample hold circuit 1.7, 18, and an amplifier 19.20, and then are connected to the video outputs of the CCD image sensor 2a and the CCD image sensor 2b by an analog switch 21 and are continuously output. It becomes a picture signal.
各走査行のスタートを示す行インデックス信号に続いて
CCD (1)制御回路13がまずC’CDイメージセ
ンサ2aを駆動して、例えば2048ビツトのビデオ出
力を取出す。Following a row index signal indicating the start of each scanning row, the CCD (1) control circuit 13 first drives the C'CD image sensor 2a to take out, for example, a 2048-bit video output.
続いてクロックパルスをN1個数えたタイミングでCC
D (2)制御回路14がCCDイメージセンサ2bを
駆動して同様に、例えば2048ビツトのビデオ出力を
取出す。Then, at the timing when N1 clock pulses are counted, CC is
D (2) The control circuit 14 drives the CCD image sensor 2b and similarly takes out, for example, a 2048-bit video output.
CCDスタートストップ論理回路11はクロックパフ、
72N2イ、ええ、イオ7ノ忰アカ。え、イッチ21
を切替えてCCDイメージセンサ2aのビデオ出力とC
CDイメージセンサ2bのビデオ出力とを接続して連続
的な1行の画信号とする。The CCD start/stop logic circuit 11 is a clock puff,
72N2i, yeah, Io7nohanaka. Eh, Itch 21
The video output of the CCD image sensor 2a and C
It is connected to the video output of the CD image sensor 2b to form a continuous one-line image signal.
ここでCCDイメージセンサ2aのビデオ出力の一部と
CCDイメージセンサ2bのビデオ出力との一部がオー
バラップするようにCCDイメージセンサ2a、2bを
配置する。その配置状況を第9図に示す。原稿4の画面
上X1の部分はCCDイメージセンサ2aのalとCC
Dイメージセンサ2bのblとに、N2の部分はCCD
イメージセンサ2bのa2゜b2とに結像さnる。第3
図に示すように、イメージセンサ2a、2bは立体的に
配置さnているから、このように画像をオーバラップし
て結像させることができる。そして、第9図の斜線の部
分31゜320ビデオ出力を捨てる。斜線部31は例え
ば48ビツトで、斜線部32も例えば48ビツトとする
と、1行の画信号4096ビツトの内有効なのは400
0ビツトとなる。N1は2048−48X2−1952
であり、N2は2000となる。CCDイメージセンサ
2a、2b′楔のX方向の位置を調整して捨てる部分3
1. 、32をOビットにすることも可能である。一般
にCCDイメージセンサは歩留りの関係7−
上パッケージの外形と有効素子部との寸法関係に精度を
要求しないほうがよいので、典型的な設計値ヲこのよう
にオーバラップするように取す、Nl。Here, the CCD image sensors 2a and 2b are arranged so that a part of the video output of the CCD image sensor 2a and a part of the video output of the CCD image sensor 2b overlap. The arrangement situation is shown in Fig. 9. The part X1 on the screen of the original 4 is the al and CC of the CCD image sensor 2a.
bl of the D image sensor 2b, and the N2 part is a CCD.
An image is formed on a2° and b2 of the image sensor 2b. Third
As shown in the figure, since the image sensors 2a and 2b are arranged three-dimensionally, it is possible to form overlapping images in this way. Then, the shaded portion 31°320 video output in FIG. 9 is discarded. If the shaded area 31 is, for example, 48 bits, and the shaded area 32 is also, for example, 48 bits, then only 400 of the 4096 bits of the image signal in one row are valid.
It becomes 0 bit. N1 is 2048-48X2-1952
Therefore, N2 is 2000. Adjust the position of the CCD image sensor 2a, 2b' wedge in the X direction and discard the part 3
1. , 32 may be O bits. In general, CCD image sensors have a yield relationship 7- Since it is better not to require precision in the dimensional relationship between the outer shape of the package and the effective element portion, the typical design values are set so that they overlap as shown above, Nl.
N2の数値に電気的かつ機械的に若干の町変し5をもつ
のが望ましい。It is desirable to have a slight electrical and mechanical change in the value of N2.
ここに示した数値は説明の簡単化のために用いたもので
、実際はCCDイメージセンサの特性上ダミービットが
あったり余分のシフトパルスを必要としたりする。その
詳細は当事者が容易に理解できるので省略する。The numerical values shown here are used to simplify the explanation; in reality, due to the characteristics of the CCD image sensor, there may be dummy bits or extra shift pulses may be required. The details are omitted as they can be easily understood by those involved.
以上説明したように、画像収束用レンズを1個としハー
フミラ−にて収束光を分割し、その分割さ扛た収束光を
複数の光電変換素子で受光することにしたので原稿浮き
でも二重読取りがなくしかも安価で容易に解像度の向上
が実現できる。As explained above, we decided to use one lens for image convergence, divide the convergent light with a half mirror, and receive the divided convergent light with multiple photoelectric conversion elements, so even if the original is floating, double reading is possible. In addition, the resolution can be easily improved at low cost.
第1図(a) 、 (b)は従来の撮像装置の構成例、
第2図(a) t (b)は二重読取りを説明するだめ
のコピー例、第3図は本発明の撮像装置の一実施例、第
4図(a)。
8−
(b)は本発明実施例の概略構成図、第5図、第6図は
本発明の撮像装置の他の実施例、第7図は本発明の撮像
装置の制御ブロック図の一例、第8図はタイムチャート
、第9図は本発明の撮像装置の別の実施例を示す。
特許出願人 岩崎通信機株式会社FIGS. 1(a) and 1(b) are configuration examples of conventional imaging devices,
FIGS. 2(a) and 2(b) show an example of copying to explain double reading, FIG. 3 shows an embodiment of the imaging device of the present invention, and FIG. 4(a) shows an example of copying. 8-(b) is a schematic configuration diagram of an embodiment of the present invention, FIGS. 5 and 6 are other embodiments of the imaging device of the present invention, and FIG. 7 is an example of a control block diagram of the imaging device of the present invention. FIG. 8 shows a time chart, and FIG. 9 shows another embodiment of the imaging apparatus of the present invention. Patent applicant Iwasaki Tsushinki Co., Ltd.
Claims (1)
の収束光路上に配設さ几るハーフミラ−と、該ハーフミ
ラ−による透過収束光を光電変換するための第1の光電
変換素子と反射収束光を光電変換するだめの第2の光電
変換素子とが交互に配設さ扛てなる複数の光電変換素子
とを具備したことを特徴とする撮像装置。a lens for converging document image light, a half mirror disposed on the converging optical path of the lens, and a first photoelectric conversion element for photoelectrically converting the convergent light transmitted by the half mirror. An imaging device comprising a plurality of photoelectric conversion elements alternately arranged with second photoelectric conversion elements for photoelectrically converting reflected convergent light.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57086318A JPS58202661A (en) | 1982-05-21 | 1982-05-21 | Image pickup device |
GB08313173A GB2122048A (en) | 1982-05-21 | 1983-05-13 | Image pickup apparatus |
DE19833318189 DE3318189A1 (en) | 1982-05-21 | 1983-05-19 | IMAGE RECORDING DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57086318A JPS58202661A (en) | 1982-05-21 | 1982-05-21 | Image pickup device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58202661A true JPS58202661A (en) | 1983-11-25 |
Family
ID=13883480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57086318A Pending JPS58202661A (en) | 1982-05-21 | 1982-05-21 | Image pickup device |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS58202661A (en) |
DE (1) | DE3318189A1 (en) |
GB (1) | GB2122048A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60247369A (en) * | 1984-05-23 | 1985-12-07 | Dainippon Screen Mfg Co Ltd | Method and device for improving resolution of array sensor |
CA1263175A (en) * | 1984-05-28 | 1989-11-21 | Hideyuki Miyazawa | Image reader for image processing apparatus |
JPH0614658B2 (en) * | 1985-08-20 | 1994-02-23 | 大日本スクリ−ン製造株式会社 | Image reader |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4005285A (en) * | 1975-10-30 | 1977-01-25 | Xerox Corporation | Optical system for extending photosensor array resolution |
US4092632A (en) * | 1977-05-02 | 1978-05-30 | Xerox Corporation | Crossover arrangement for multiple scanning arrays |
US4249217A (en) * | 1979-05-29 | 1981-02-03 | International Business Machines Corporation | Separated sensor array abutment |
-
1982
- 1982-05-21 JP JP57086318A patent/JPS58202661A/en active Pending
-
1983
- 1983-05-13 GB GB08313173A patent/GB2122048A/en not_active Withdrawn
- 1983-05-19 DE DE19833318189 patent/DE3318189A1/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
GB8313173D0 (en) | 1983-06-22 |
DE3318189A1 (en) | 1983-11-24 |
GB2122048A (en) | 1984-01-04 |
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