JPS6038167Y2 - Measurement lighting device - Google Patents
Measurement lighting deviceInfo
- Publication number
- JPS6038167Y2 JPS6038167Y2 JP6041478U JP6041478U JPS6038167Y2 JP S6038167 Y2 JPS6038167 Y2 JP S6038167Y2 JP 6041478 U JP6041478 U JP 6041478U JP 6041478 U JP6041478 U JP 6041478U JP S6038167 Y2 JPS6038167 Y2 JP S6038167Y2
- Authority
- JP
- Japan
- Prior art keywords
- scanning line
- measured
- scanning
- line
- lighting device
- 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.)
- Expired
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Description
【考案の詳細な説明】
この考案は、ラインセンサカメラ等を利用した計測装置
の照明装置において、従来より精度良く計測可能な計測
用照明装置を提供するものである。[Detailed Description of the Invention] This invention provides a measurement illumination device that is capable of measuring more accurately than the conventional lighting device for a measurement device using a line sensor camera or the like.
従来のラインセンサカメラを利用した計測用照明装置の
一例を第１図、第２図に示す。An example of a measurement illumination device using a conventional line sensor camera is shown in FIGS. 1 and 2.
第１図は装置の斜視図、第２図は、第１図の搬送装置の
進行方向に対して側面から見た図面である。FIG. 1 is a perspective view of the apparatus, and FIG. 2 is a side view of the conveying apparatus of FIG. 1 in the direction of movement.
第１図において、１はラインセンサによるライン走査形
振像装置（以下ラインセンサカメラという）、２ａｔ２
ｂは照明装置で通常ハロゲンランプ等の高輝度ランプが
使用される。In FIG. 1, 1 is a line scanning type imaging device using a line sensor (hereinafter referred to as a line sensor camera), 2at2
Reference numeral b denotes a lighting device, which usually uses a high-intensity lamp such as a halogen lamp.
３は被計測物４をのせるパケットコンベヤ、チェインコ
ンベア等の搬送装置である。Reference numeral 3 denotes a conveyance device such as a packet conveyor or a chain conveyor on which the object to be measured 4 is placed.
計測の原理は、搬送装置５により移動しているパケット
３に載せられた被計測物体（以下試料という）４に照明
装置２ａ、２ｂで照明し、その反射光をラインセンサカ
メラ１で撮像するものである。The principle of measurement is to illuminate an object to be measured (hereinafter referred to as a sample) 4 placed on a packet 3 that is being moved by a transport device 5 with illumination devices 2a and 2b, and to image the reflected light with a line sensor camera 1. It is.
ここでラインセンサカメラ１は、第１図のように、Ｃ□
〜Ｃ５の計測ライン上を見るように設置される。Here, the line sensor camera 1 is C□ as shown in FIG.
It is installed so that it looks on the measurement line of ~C5.
これを側面から見ると第２図のようになる。When viewed from the side, it looks like Figure 2.
即ち、パケット３上でラインセンサカメラ１の光軸と、
照明装置２ａ、２ｂの光軸が一致するように構成される
。That is, on the packet 3, the optical axis of the line sensor camera 1 and
The illumination devices 2a and 2b are configured so that their optical axes coincide.
このような従来例においては、試料４と背景となるべき
パケット３の底面のコントラストが十分とれるように構
成される。In such a conventional example, the structure is such that there is sufficient contrast between the sample 4 and the bottom surface of the packet 3, which is to serve as the background.
しかしながら、試料４の表面が曲率をもった曲面であっ
たり、鏡面反対をおこすような物であった場合は、分光
分布等に全く依存しないため、測定誤差となって表われ
ていた。However, if the surface of the sample 4 is a curved surface with curvature or something that causes mirror-like reversal, it does not depend on the spectral distribution or the like at all, resulting in measurement errors.
この考案はかかる不具合を解消するためになされたもの
で、試料の表面状態がいかなるものでも、その輪郭を精
度良く計測することができる照明装置を提供するもので
ある。This invention was devised to eliminate such problems, and provides an illumination device that can accurately measure the outline of a sample, no matter what the surface condition of the sample.
以下第３図に示すこの考案の一実施例について説明する
。An embodiment of this invention shown in FIG. 3 will be described below.
第３図において、第１図と同一符号は同一または相当部
分を示す。In FIG. 3, the same reference numerals as in FIG. 1 indicate the same or corresponding parts.
２０ａ、２０ｂは細い帯状の光線１４ａ、１４ｂを照射
する照明装置で、ランプ８、コンデンサレンズ９、プロ
ジェクタレンズ１０、スリット板１１およびケース１３
とで構成されている。20a and 20b are illumination devices that emit thin strip-shaped light beams 14a and 14b, which include a lamp 8, a condenser lens 9, a projector lens 10, a slit plate 11, and a case 13.
It is made up of.
上記スリット板１１は第４図に示されるように中央部に
スリット１２を備えている。The slit plate 11 has a slit 12 in the center, as shown in FIG.
このような構成において、照明装置２０ａ、２０ｂの帯
状の光線１４ａ、１４ｂを、第３図において紙面に垂直
方向の走査ラインＣに対し平行となし、第４図に示され
るように載物台３の走査ライン上で光線１４ａ、１４ｂ
が重なり巾ｔなる光の帯を形成するよう照明装置２０ａ
、２０ｂの照射角度αを設定する。In such a configuration, the strip-shaped light beams 14a, 14b of the illumination devices 20a, 20b are made parallel to the scanning line C perpendicular to the plane of the paper in FIG. 3, and as shown in FIG. rays 14a, 14b on the scanning line of
The lighting device 20a overlaps to form a light band with a width t.
, 20b is set.
このように光線１４ａ、１４ｂが照射されている載物台
３上に被計測物４を載置した場合、被計測物４は厚みが
あるので、第４図に示されるように被計測物４上の走査
ラインＭ上には光線１４ａ、１４ｂはあたらない。When the object to be measured 4 is placed on the stage 3 that is irradiated with the light beams 14a and 14b, the object to be measured 4 is thick, so the object to be measured 4 is placed on the stage 3 as shown in FIG. The light beams 14a and 14b do not fall on the upper scanning line M.
よってライン走査形振像装置１の走査時、走査ラインＣ
からの反射はあるが走査ラインＭからの反射はなく、走
査ラインＭの表面状態、即ち被計測物４の表面状態に影
響を受けずに計測ができる。Therefore, when the line scanning type imaging device 1 scans, the scanning line C
There is reflection from the scanning line M, but there is no reflection from the scanning line M, and measurement can be performed without being affected by the surface condition of the scanning line M, that is, the surface condition of the object to be measured 4.
なお被計測物４が薄い場合は照射角度αを小さくすれば
良い。Note that if the object to be measured 4 is thin, the irradiation angle α may be made smaller.
以上のようにこの考案は照明装置の光線を帯状としてい
るため、照明装置の照射角度を変えるだけで載物体上の
走査ライン上には光線は照射されるが、上記載物体上に
載置される被計測物上の走査ライン上には光線が照射さ
れないようにすることができ、被計測物の表面状態に左
右されることなく、被計測物の輪郭を精度良く計測する
ことができる等効果がある。As mentioned above, in this invention, the light beam of the illumination device is in the form of a strip, so simply by changing the irradiation angle of the illumination device, the light beam is irradiated onto the scanning line on the object to be placed. It is possible to prevent the light beam from being irradiated onto the scanning line on the object to be measured, and the contour of the object to be measured can be measured with high precision without being affected by the surface condition of the object to be measured. There is.
第１図および第２図は従来の計測用照明装置を示す構成
国、第３図はこの考案の一実施例を示す構成国、第４図
および第５図は第３図の作用を説明する説明図、第６図
は載物台上と走査ラインの関係を説明する図である。
図において、８はランプ、９はコンデンサレンズ、１０
はプロジェクタレンズ、１１はスリット板、１３はケー
ス、２０ａ、２０ｂは照明装置である。
なお図中同一符号は同一または相当部分を示すものとす
る。Figures 1 and 2 show a conventional measurement lighting device, Figure 3 shows an embodiment of this invention, and Figures 4 and 5 explain the operation of Figure 3. The explanatory diagram, FIG. 6, is a diagram illustrating the relationship between the top of the stage and the scanning line. In the figure, 8 is a lamp, 9 is a condenser lens, and 10 is a lamp.
1 is a projector lens, 11 is a slit plate, 13 is a case, and 20a and 20b are lighting devices. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
ン走査するライン走査形振像装置の走査ラインと平行の
細い帯状の光線を放射する第１と第２の照明装置を備え
、上記帯状の光線が上記被計測物上の走査ライン部を照
明することなく上記載物体の走査ライン部分を照明する
よう上記第１と第２の照明装置を上記走査ラインを境と
しその両側にそれぞれ配設したことを特徴とする計測用
照明装置。The first and second illumination devices emit thin strip-shaped light beams parallel to the scanning line of a line scanning type imaging device that performs line scanning of a mounting object and a measured object placed on the mounting object, and The first and second illumination devices are arranged on both sides of the scanning line so that the band-shaped light beam illuminates the scanning line portion of the object without illuminating the scanning line portion of the object to be measured. A measurement lighting device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6041478U JPS6038167Y2 (en) | 1978-05-04 | 1978-05-04 | Measurement lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6041478U JPS6038167Y2 (en) | 1978-05-04 | 1978-05-04 | Measurement lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54162242U JPS54162242U (en) | 1979-11-13 |
| JPS6038167Y2 true JPS6038167Y2 (en) | 1985-11-14 |
Family
ID=28960911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6041478U Expired JPS6038167Y2 (en) | 1978-05-04 | 1978-05-04 | Measurement lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038167Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0827179B2 (en) * | 1986-07-30 | 1996-03-21 | 株式会社マキ製作所 | Lighting equipment for imaging fruits and vegetables |
-
1978
- 1978-05-04 JP JP6041478U patent/JPS6038167Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54162242U (en) | 1979-11-13 |
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