【発明の詳細な説明】〔発明の技術分野〕本発明は工業用テレビカメラの照明装置に関する。[Detailed description of the invention][Technical field of invention]The present invention relates to a lighting device for an industrial television camera.
工業用テレビカメラｃ以下、ＩＴＶカメラという）によ
って得られる画像情報に基づいてパターン認識などの画
像処理を行なうためには、コントラストの良い画像情報
が得られる照明装置を必要とする。In order to perform image processing such as pattern recognition based on image information obtained by an industrial television camera (hereinafter referred to as an ITV camera), a lighting device that can obtain image information with good contrast is required.
第３図は従来のＩＴＶカメラの照明装置の一例を示す概
略図である。第３図において、光源（至）から送出され
た所定の波長特性を有する光３１）は、入射角度４５度
でハーフミラ−（３つに入射Ｌ、該ハーフミラ−０２１
で部分反射し、入射角度９０度でＩＴＶカメラ（ハ）に
よって映されるべき被計測物体（３４）に入射し、さら
に該被計測物体（２）で反射し、ハーフミラ−Ｃ３Ｂ
’ｆ−＆（１分透過し、Ｉ’ｌ’ＶカメラＣ３３に入射
する。FIG. 3 is a schematic diagram showing an example of a conventional illumination device for an ITV camera. In FIG. 3, light 31) having a predetermined wavelength characteristic sent out from a light source (to) is incident on a half mirror (three lights L, the half mirror 021) at an incident angle of 45 degrees.
It is partially reflected by the object to be measured (34) that is to be imaged by the ITV camera (c) at an incident angle of 90 degrees, and is further reflected by the object to be measured (2).
'f-&(Transmits for 1 minute and enters I'l'V camera C33.
このようにして、Ｉ’ｌ’Ｖカメラ關によって得られた
被計測物体Ｃ３４）の画像情報に基づいて適宜の画像処
理が行なわれる。In this way, appropriate image processing is performed based on the image information of the object to be measured C34) obtained by the I'l'V camera.
また、第４図は従来のＩＴＶカメラの照明装置の他の例
會示す概略図である。第４図において、光源（４０から
送出された光０１）は、入射角度略４５度で被計測物体
（６）に入射し、該被計測物体θ望で反射、散乱し、そ
の一部がＩＴＶカメラ＠埠に入射する。Further, FIG. 4 is a schematic diagram showing another example of a conventional illumination device for an ITV camera. In FIG. 4, light 01 emitted from the light source (40) enters the measured object (6) at an incident angle of about 45 degrees, is reflected and scattered by the measured object θ, and a part of it is reflected and scattered by the ITV. The camera enters the wharf.
しかし、従来のＩＴＶカメラの照明装置、例えば第３図
に示した装置では、光源（至）は固有の波長特性を有す
る光Ｃ３１）’ｅ送出し、被計測物体Ｃ３４）Ｆｉその
反射率が光０１）の波長に対して異なり、さらにＩＴＶ
カメラ（至）は入射光に対して固有の波長特性會有して
いるので、ある波長の光が他の波長の光よりも弱くなっ
てしまうなど、ＩＴＶカメラ關によって得られた画像情
報は必ずしも画像処理に適したものになるとは限らず、
問題でめった。また、第４図に示したＩＴＶカメラの照
明装置も同様に画像処理に適した画像情報を得られない
ことがあり、問題であった。However, in a conventional illumination device for an ITV camera, for example, the device shown in FIG. 01) and also for the wavelength of ITV
Since cameras have unique wavelength characteristics for incident light, the image information obtained by ITV cameras is not always accurate, such as light of certain wavelengths being weaker than light of other wavelengths. It may not necessarily be suitable for image processing,
I ran into a problem. Further, the illumination device of the ITV camera shown in FIG. 4 similarly has a problem in that it may not be possible to obtain image information suitable for image processing.
本発明は上記問題点ｆｗｌ決するためになされたもので
、ＩＴＶカメラに入射する光が画像処理に適した所定の
波長特性となるようにその波長特性を調整するフィルタ
機能を有する手段を光源からの照射光の経路または被計
測物体からの反射光の経路に設けることにより、画像処
理に適した画像情報？得ることができるＩＴＶカメラの
照明装置を提供するものである。The present invention has been made to solve the above-mentioned problems, and includes a means having a filter function for adjusting the wavelength characteristics of the light incident on the ITV camera so that the light has a predetermined wavelength characteristic suitable for image processing. Image information suitable for image processing by providing it in the path of irradiation light or the path of reflected light from the object to be measured? The present invention provides an illumination device for an ITV camera that can be obtained.
以下、本発明の一実施例を添付図面を参照して詳細に説
明する。Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第１図は本発明に係る工業用テレビカメラの照明装置の
概略図である◎第１図において、００は光源、（Ｉηは
光源ｑ１から送出される固有の波長特性を有スる光、０
２はフィルター、（至）はハーフミラ−１α◆は被計測
物体、α→はＩＴＶカメラである。FIG. 1 is a schematic diagram of the illumination device for an industrial television camera according to the present invention. In FIG.
2 is a filter, (to) a half mirror, 1α◆ is an object to be measured, and α→ is an ITV camera.
光源０１からの照明光Ｃ１］）はフィルターα諺？介し
てハーフミラ−０３に入射し、該ハーフミラ−０３で部
分反射し、被計測物体αゆに入射し、さらに該被計測物
体（１４で反射し、ハーフミラ−（至）を部分透過し、
ＩＴＶカメラ０ｅに入射する。Is the illumination light C1 from light source 01]) a filter α? It enters the half mirror 03 through the half mirror 03, is partially reflected by the half mirror 03, enters the object to be measured α, is further reflected by the object to be measured (14, and partially transmits through the half mirror (to),
It enters the ITV camera 0e.
フィルター〇つはＩＴＶカメラ（至）延入射する光０め
が画像処理に適した所定の波長特性となるように光（１
１）の波長特性′ｆｒ調整する機能を有しており、光０
］）の波長特性、ハーフミラ−ａｌの光αめの波長に対
する反射率と透過率、被計測物体０４の光０■の波長に
対する反射率、およびＩＴＶカメラ（ト）の波長特性な
どに基づいてその波長特性が設定されている。Filter〇 is used to filter light (1) so that the 0th light incident on the ITV camera (towards) has a predetermined wavelength characteristic suitable for image processing.
1) It has a function to adjust the wavelength characteristic 'fr, and the light
]), the reflectance and transmittance of the half mirror AL for the wavelength of light α, the reflectance of the measured object 04 for the wavelength of light 0■, and the wavelength characteristics of the ITV camera (g). Wavelength characteristics are set.
なお、フィルター０２はＩＴＶカメラ（ロ）に入射する
光０１）が所定の波長特性になれば、光源００と被計測
物体α◆の問および被計測物体（１４とＩＴＶカメラα
υの間のいずれに配しても良く、また一枚に限るもので
はない。さらに、ハーフミラ−（至）にフィルター（６
）の機能と同一の機能を持たせるようにしてもよい。In addition, when the light 01) incident on the ITV camera (b) has a predetermined wavelength characteristic, the filter 02 detects the difference between the light source 00 and the object to be measured α◆ and the object to be measured (14 and the ITV camera α).
It may be placed anywhere between υ, and it is not limited to one piece. Furthermore, a filter (6) is added to the half mirror (to).
) may have the same function as that of .
次に、第２図は本発明に係る工業用テレビカメラの照明
装置の他の実施例管示す概略図である。Next, FIG. 2 is a schematic diagram showing another embodiment of the illumination device for an industrial television camera according to the present invention.
第２図において、（イ）は光源、（２Ｄは光源−から送
出される光、（２２は被計測物体、（ハ）はフィルター
、（至）はＩＴＶカメラである。第４図において、光源
−から送出された党則は、被計測物体Ｈ’に斜めから照
射し、該被計測物体ので反射、散乱し、その一部７５！
Ｉ Ｔ Ｖカメラ＠に入射する。ＩＴＶカメラ（２４
）に入射する光は第１図の実施例と同様にフィルター（
２□□□によって画像処理に適した所定の波長特性とな
るように調整されている。In Fig. 2, (A) is the light source, (2D is the light sent from the light source -, (22 is the object to be measured, (C) is the filter, and (to) is the ITV camera. In Fig. 4, the light source is The beam sent from - is irradiated obliquely onto the object to be measured H', is reflected and scattered by the object to be measured, and a portion of it 75!
Enter the I TV camera @. ITV camera (24
) is passed through a filter (
2□□□ is adjusted to have a predetermined wavelength characteristic suitable for image processing.
以上説明したように本発明によれば、ＩＴＶカメラに入
射する光が画像処理に適した所定の波長特性となるよう
にその波長特性全調整するフィルター機能を有する手段
を光の経路に設けることにより、コントラストの良い画
像情報が得られる。As explained above, according to the present invention, by providing in the light path a means having a filter function for fully adjusting the wavelength characteristics of the light incident on the ITV camera so that the light has a predetermined wavelength characteristic suitable for image processing. , image information with good contrast can be obtained.
第１図は本発明に係る工業用テレビカメラの照明装置の
一実施例を示す概略図、Ｍ２図は本発明に係る工業用チ
ンピカメラの照明装置の池の実施例を示す概略図、第６
図および第４図は従来の工業用テレビカメラの照明装置
の概略図である。１０、２０．３０．４０ ・・・光源、１１．２１．３
１．４１・・・ｆｆｉ、１２．２３・・・フィルター、
１３．３２・・・ハーフミラ−１１４，２２，３４，４
２・・・被計測物体、１５゜２！、 ３３． 、！１３
・・・工業用テレビカメラ（ＩＴＶカメラ）。代理人 弁理士 木 村 三 朗第１図第２図第３図FIG. 1 is a schematic diagram showing an embodiment of the lighting device for an industrial television camera according to the present invention; FIG. M2 is a schematic diagram showing an embodiment of the lighting device for an industrial chimp camera according to the present invention;
FIG. 4 is a schematic diagram of a conventional illumination device for an industrial television camera. 10, 20.30.40 ... light source, 11.21.3
1.41...ffi, 12.23...filter,
13.32...Half mirror-114, 22, 34, 4
2...Object to be measured, 15°2! , 33. ,! 13
...Industrial television camera (ITV camera). Agent Patent Attorney Sanro KimuraFigure 1Figure 2Figure 3
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13908384AJPS6118937A (en) | 1984-07-06 | 1984-07-06 | Lighting device of industrial telecamera |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13908384AJPS6118937A (en) | 1984-07-06 | 1984-07-06 | Lighting device of industrial telecamera |
| Publication Number | Publication Date |
|---|---|
| JPS6118937Atrue JPS6118937A (en) | 1986-01-27 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13908384APendingJPS6118937A (en) | 1984-07-06 | 1984-07-06 | Lighting device of industrial telecamera |
| Country | Link |
|---|---|
| JP (1) | JPS6118937A (en) |
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