JPH03214974A - Line sensor scanning type camera - Google Patents
Line sensor scanning type cameraInfo
- Publication number
- JPH03214974A JPH03214974A JP2010309A JP1030990A JPH03214974A JP H03214974 A JPH03214974 A JP H03214974A JP 2010309 A JP2010309 A JP 2010309A JP 1030990 A JP1030990 A JP 1030990A JP H03214974 A JPH03214974 A JP H03214974A
- Authority
- JP
- Japan
- Prior art keywords
- line sensor
- light
- light source
- subject
- slit
- 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.)
- Granted
Links
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000021615 conjugation Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、複数の受光画素を一次元配置したラインセン
サの移動走査により、被写体の二次元画像を読取るライ
ンセンサ走査型カメラに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a line sensor scanning camera that reads a two-dimensional image of a subject by moving and scanning a line sensor in which a plurality of light-receiving pixels are arranged one-dimensionally.
[従来の技術]
従来、精細な静止画面の画像情報を得るカメラとして、
複数の受光画素を一次元配置したラインセンサを撮影レ
ンズによる被写体像の結像面上に移動自在に配置し、ラ
インセンサの移動に伴う読取走査により二次元画像情報
を取り込むようにしたラインセンサ走査型がメラが知ら
れている。[Conventional technology] Conventionally, as a camera that obtains detailed still screen image information,
Line sensor scanning is a line sensor in which a line sensor with a one-dimensional arrangement of multiple light-receiving pixels is movably arranged on the imaging plane of the object image formed by the photographing lens, and two-dimensional image information is captured by scanning as the line sensor moves. The type is known as Mela.
このようなラインセンサ型カメラにあっては、被写体結
像面を大きくした広画角の被写体像の読取走査ができる
ため、高精細な画像データ得ることができる。In such a line sensor type camera, it is possible to read and scan a subject image with a wide angle of view with a large subject imaging plane, so that high-definition image data can be obtained.
[発明が解決しようとする問題点コ
しかしながら、このような従来のラインセンサ型カメラ
にあっては、例えば第2図(a)に示す撮影台14のス
タンド16にラインセンサ型カメラ10をセットした撮
影や、同図(b)に示すスタジオ撮影では、被写体全体
をムラ無く照明すために照明装置12が大がかりな物と
なり、装置全体としても大がかりで可搬性に乏しく、ま
た消費電力も大きい問題点があった。[Problems to be Solved by the Invention] However, in such a conventional line sensor type camera, for example, the line sensor type camera 10 is set on the stand 16 of the photographing table 14 shown in FIG. 2(a). When photographing or studio photography as shown in FIG. 2(b), the lighting device 12 is large-scale in order to illuminate the entire subject evenly, and the device as a whole is large and has poor portability, and also has the problem of high power consumption. was there.
本発明は、このような従来の問題点に鑑みてなされたも
ので、簡単な構成により高精細の画像情報を撮像できる
ラインセンサ走査型カメラを提供することを目的とする
。The present invention has been made in view of these conventional problems, and an object of the present invention is to provide a line sensor scanning camera that can capture high-definition image information with a simple configuration.
[問題点を解決するための手段]
この目的を達成するため本発明にあっては次のように構
成する。尚、実施例図面中の符号を併せて示す。[Means for Solving the Problems] To achieve this object, the present invention is configured as follows. In addition, the reference numerals in the drawings of the embodiments are also shown.
まず本発明は、撮影レンズ1により結像された結像面上
の被写体像を、複数の受光画素を一次元配置したライン
センサ3の移動に伴う読取走査で二次元画像情報を取り
込むラインセンサ走査型カメラを対象とする。First, the present invention utilizes line sensor scanning, in which two-dimensional image information is captured by scanning an object image formed by a photographing lens 1 on an imaging plane as the line sensor 3 moves in one-dimensional arrangement with a plurality of light-receiving pixels. Target type cameras.
このようなラインセンサ走査型カメラにつき本発明にあ
っては、撮影レンズ1に対しラインセンサ3と共役な位
置に設けられたスリット状の光を照射する光源4と;撮
影レンズ1を通ってランイセンサ3に結像される被写体
からの光と光源4から撮影レンズ1を通って被写体に照
射される光とを分離するビームスプリッター2と;ライ
ンセンサ3の移動に同期して光源4を移動してラインセ
ンサ3で読取っている被写体像に対応した被写体の位置
にスリット状の光を照射させる光源駆動手段6と;を設
けたものである。In the present invention, for such a line sensor scanning camera, there is provided a light source 4 that irradiates a slit-shaped light provided at a position conjugate with the line sensor 3 to the photographing lens 1; a beam splitter 2 that separates the light from the subject that is imaged on 3 and the light irradiated from the light source 4 to the subject through the photographing lens 1; A light source driving means 6 is provided for irradiating a slit-shaped light onto a position of the subject corresponding to the subject image being read by the line sensor 3.
[作用]
このような構成を備えた本発明のラインセンサ走査型カ
メラによれば、カメラに内蔵した光源からのスリット光
がラインセンサの移動に同期して被写体の撮影対象位置
のみを照射しながら移動するようになり、その結果、従
来、別に必要であった照明装置がカメラに内蔵されたこ
ととなり、大かがリな照明装置を不要にしてカメラを含
むシステム全体を小型化し、必要に応じて容易に可搬す
ることができる。[Function] According to the line sensor scanning camera of the present invention having such a configuration, the slit light from the light source built into the camera illuminates only the position of the subject to be photographed in synchronization with the movement of the line sensor. As a result, lighting devices that were previously required separately are now built into cameras, eliminating the need for bulky lighting devices and downsizing the entire system including the camera. It can be easily transported.
[実施例]
第1図は本発明の一実施例を示した実施例構成図である
。[Embodiment] FIG. 1 is a block diagram showing an embodiment of the present invention.
第1図において、16はカメラ本体であり、カメラ本体
16に装着された撮影レンズ1の後方にはビームスプリ
ッタ2が設置され、被写体18からの光を直角方向に反
射する。ビームスプリツタ2で反射された被写体18か
ら光はラインセンサ3の受光面が位置する結像面上に被
写体像18′を結像する。ラインセンサ3は光を電気信
号に変換する複数の受光画素一次元配列しており、例え
ば電荷蓄積型のCCDラインセンサが使用される。In FIG. 1, 16 is a camera body, and a beam splitter 2 is installed behind the photographic lens 1 attached to the camera body 16 to reflect light from a subject 18 in a right angle direction. The light from the subject 18 reflected by the beam splitter 2 forms a subject image 18' on the imaging plane where the light receiving surface of the line sensor 3 is located. The line sensor 3 has a one-dimensional array of a plurality of light receiving pixels that convert light into electrical signals, and uses, for example, a charge accumulation type CCD line sensor.
ラインセンサ3はステージ4により結像面に沿って移動
され、この移動に伴なう読取走査で被写体像18′の二
次元画像情報をメモリ等に取り込む。The line sensor 3 is moved along the image forming plane by the stage 4, and the two-dimensional image information of the subject image 18' is captured into a memory or the like through reading scanning accompanying this movement.
一方、ビームスブリッタ−2の背後の撮影レンズ1に対
するラインセンサ3側の結像面と共役な位置にはスリッ
ト光源4が配置される。このスリット光源4からは、あ
る幅をもった光がビームスブリッター2を通過し、更に
撮影レンズ1により被写体18上のラインセンサ3が撮
像している部分にスリット光を照射する。また、スリ,
ット光源4は移動ステージ6によりラインセンサ3と共
役な位置を保ちつつ移動(同期移動)し、ビームスプリ
ッタ−2を通過して撮影レンズ1により被写体18の撮
像している部分のみを移動しながら照明する。On the other hand, a slit light source 4 is arranged behind the beam splitter 2 at a position conjugate with the imaging plane on the line sensor 3 side with respect to the photographing lens 1. From this slit light source 4, light with a certain width passes through the beam splitter 2, and the photographing lens 1 irradiates the slit light onto the portion of the subject 18 that is being imaged by the line sensor 3. Also, pickpockets,
The light source 4 is moved by the moving stage 6 while maintaining a conjugate position with the line sensor 3 (synchronized movement), passes through the beam splitter 2, and moves only the portion of the subject 18 being imaged by the photographing lens 1. While lighting.
この第1図の実施例による本発明のラインセンサ走査型
カメラによる撮影においては、第2図の従来例に示した
大かかり照明装置12は不要であり、カメラに内蔵され
たスリット光源4からのスリット光がラインセンサ3の
撮影位置となる被写体部分に照射され、撮影を開始する
とラインセンサ3の移動に同期したスリット光源4の移
動で被写体に照射されているスリット光も移動して撮影
するようになる。When photographing using the line sensor scanning camera of the present invention according to the embodiment shown in FIG. 1, the large illumination device 12 shown in the conventional example shown in FIG. The slit light is irradiated onto the subject part that is the shooting position of the line sensor 3, and when shooting starts, the slit light source 4 moves in synchronization with the movement of the line sensor 3, so that the slit light irradiating the subject also moves and shoots. become.
また撮影開始時には、被写体の撮影開始位置にスリット
光が照射されているため、撮影開始の位置合わせを容易
に行うこともできる。Furthermore, since the slit light is irradiated to the photographing start position of the subject at the start of photographing, positioning for the photographing start can be easily performed.
[発明の効果]
以上説明したように本発明によれば、被写体の撮像部分
へ撮影用レンズを兼用して照明光を照射することから、
被写体の撮影部分以外へ無駄な光を照射することが無く
、必要部分のみへ光を集中して光の利用効率が向上し、
光源の電力を小さくできる。また、照明装置をカメラに
内部できたことで別な照明装置を必要とせず、可搬性に
優れる。[Effects of the Invention] As explained above, according to the present invention, illumination light is irradiated onto the imaged portion of the subject by also serving as a photographing lens.
There is no need to irradiate unnecessary light on areas other than the photographed area of the subject, and the light is concentrated only on the necessary areas, improving the efficiency of light use.
The power of the light source can be reduced. Furthermore, since the lighting device can be built inside the camera, there is no need for a separate lighting device, resulting in excellent portability.
更に、長時間光を照射できない被写体に対しても有効で
ある。Furthermore, it is also effective for subjects that cannot be irradiated with light for a long time.
第1図は本発明の一実施例を示した実施例構成図; 第2図は従来装置の構成図である。 [主要部分の符号の説明] 1;撮影レンズ 2;ビームスプリッタ 3;ラインセンサ 4;スリット光源 5;移動ステージ(ラインセンサ用) 6;移動ステージ(光源用) 16:カメラ本体 18:被写体 18′:被写体像 FIG. 1 is an embodiment configuration diagram showing one embodiment of the present invention; FIG. 2 is a block diagram of a conventional device. [Explanation of symbols of main parts] 1; Photography lens 2; Beam splitter 3; Line sensor 4; Slit light source 5; Moving stage (for line sensor) 6; Moving stage (for light source) 16: Camera body 18: Subject 18': Subject image
Claims (1)
数の受光画素を1次元配置したラインセンサの移動に伴
う読取走査で2次元画像情報として読取るラインセンサ
走査型カメラに於いて、前記撮影レンズに対して前記ラ
インセンサと共役な位置に設けられたスリット状の光を
照射する光源と; 前記撮影レンズを透過して前記ラインセンサに至る被写
体からの光と前記光源より前記撮影レンズを介して被写
体に照射する光とを分離するビームスプリッターと; 前記ラインセンサの移動に同期して前記光源を移動し、
前記ラインセンサで読取っている被写体像に対応した被
写***置にスリット状の光を照射させる光源駆動手段と
; を備えたことを特徴とするラインセンサ走査型カメラ。[Scope of Claims] A line sensor scanning type in which a subject image formed by a photographic lens on an imaging plane is read as two-dimensional image information by scanning as the line sensor moves in one-dimensional arrangement of a plurality of light-receiving pixels. In the camera, a light source that irradiates light in a slit shape provided at a position conjugate with the line sensor with respect to the photographic lens; light from a subject that passes through the photographic lens and reaches the line sensor; a beam splitter that separates the light irradiated from the light source to the subject through the photographic lens; moving the light source in synchronization with the movement of the line sensor;
A line sensor scanning camera comprising: a light source driving means for irradiating a slit-shaped light onto a subject position corresponding to the subject image being read by the line sensor;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010309A JP2638242B2 (en) | 1990-01-19 | 1990-01-19 | Line sensor scanning camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010309A JP2638242B2 (en) | 1990-01-19 | 1990-01-19 | Line sensor scanning camera |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03214974A true JPH03214974A (en) | 1991-09-20 |
JP2638242B2 JP2638242B2 (en) | 1997-08-06 |
Family
ID=11746647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010309A Expired - Fee Related JP2638242B2 (en) | 1990-01-19 | 1990-01-19 | Line sensor scanning camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2638242B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003052395A1 (en) * | 2001-12-18 | 2003-06-26 | Cognex Technology And Investment Corporation | Apparatus and method for slide illumination |
JP2008309532A (en) * | 2007-06-13 | 2008-12-25 | Lasertec Corp | Three-dimensional measuring apparatus and inspection apparatus |
-
1990
- 1990-01-19 JP JP2010309A patent/JP2638242B2/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003052395A1 (en) * | 2001-12-18 | 2003-06-26 | Cognex Technology And Investment Corporation | Apparatus and method for slide illumination |
US6914679B2 (en) | 2001-12-18 | 2005-07-05 | Cognex Technology And Investment Corporation | Side light apparatus and method |
JP2008309532A (en) * | 2007-06-13 | 2008-12-25 | Lasertec Corp | Three-dimensional measuring apparatus and inspection apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2638242B2 (en) | 1997-08-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |