JPH0466507U

JPH0466507U -

Info

Publication number: JPH0466507U
Application number: JP11081290U
Authority: JP
Priority date: 1990-10-23
Filing date: 1990-10-23
Publication date: 1992-06-11

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す斜視図、第２
図、第３図はそれぞれ第１図の異形ピラミツドミ
ラー、光フアイバー型スリツト照明を示す正面図
及び側面図、部分拡大斜視図、第４図、第５図は
それぞれ第１図のイメージフアイバーと異形ピラ
ミツドミラーとの関係、視野とスリツト照明との
関係を示す部分拡大斜視図、部分拡大線図、第６
図は第１図に接続する信号処理システムを示すブ
ロツク線図である。第７図は公知の細管内径計測
手段を示す斜視図、第８図、第９図はそれぞれカ
ンチレバー式、光学式公知の内径計測センサーを
示す斜視図である。１……イメージフアイバー、２……光フアイバ
ー型スリツト照明、３……異形ピラミツドミラー
、４……光学系支持ガラス体、５……スリツト光
、６……下部面、７……上部面、８……照明用光
源、９……光フアイバー、１０……対物レンズ、
１１……シリンドリカルレンズ、１２……視野、
１３……調芯機構、１４……フレキチユーブ（フ
レキシブルチユーブ）、１５……中継器、１６…
…センサー出力、１７……モニターテレビ、１８
……視野、１９……スリツト光像の観察像、２０
……波線状観察像、２１……死角、２２……画像
メモリー、２３……計測システム、Ｓ……スリツ
ト照明軸、Ｖ……視野軸、θ_１……下部面角度、
θ_２……上部面角度、θ_３……視野角、θ_４……
斜め照明角度、φ……画像センター。 Fig. 1 is a perspective view showing one embodiment of the present invention;
Figure 3 shows the irregularly shaped pyramid mirror in Figure 1, front and side views, and partially enlarged perspective views showing the optical fiber type slit illumination, respectively, and Figures 4 and 5 show the image fiber and irregularly shaped pyramid mirror in Figure 1, respectively. Partially enlarged perspective view and partially enlarged line diagram showing the relationship between the field of view and the slit illumination, Part 6
1 is a block diagram showing a signal processing system connected to FIG. 1. FIG. 7 is a perspective view showing a known thin tube inner diameter measuring means, and FIGS. 8 and 9 are perspective views showing a known cantilever type and optical type inner diameter measuring sensor, respectively. DESCRIPTION OF SYMBOLS 1... Image fiber, 2... Optical fiber type slit illumination, 3... Irregular pyramid mirror, 4... Optical system support glass body, 5... Slit light, 6... Lower surface, 7... Upper surface, 8... ...Light source for illumination, 9...Optical fiber, 10...Objective lens,
11...Cylindrical lens, 12...Field of view,
13... Alignment mechanism, 14... Flexible tube, 15... Repeater, 16...
...Sensor output, 17...Monitor TV, 18
...Field of view, 19...Observation image of slit light image, 20
... Wavy line observation image, 21 ... Blind spot, 22 ... Image memory, 23 ... Measurement system, S ... Slit illumination axis, V ... Viewing axis, θ ₁ ... Lower surface angle,
θ ₂ ... Upper surface angle, θ ₃ ... Viewing angle, θ ₄ ...
Oblique illumination angle, φ... image center.

Claims

[Scope of utility model registration request]

Multiple optical fiber type slit lights arranged at equal intervals around the central image fiber,
The slit light, which is disposed at the center of the optical axis of the image fiber and has a regular polygonal cross section emitted from each of the slit illuminations to the observation field axis of the image fiber, is reflected in the radial direction as a reflecting mirror, and from the inner surface of the test tube. An optical inner diameter measurement sensor characterized by comprising an irregularly shaped polygonal pyramidal mirror that reflects the reflected light of the mirror as an observation mirror.