JPS62150612U

JPS62150612U -

Info

Publication number: JPS62150612U
Application number: JP3830486U
Authority: JP
Priority date: 1986-03-18
Filing date: 1986-03-18
Publication date: 1987-09-24

Description

[Brief explanation of the drawing]

第１図は本考案に係る管の内面形状計測カメラ
ヘツドの概略図、第２図は第１図に示したリング
の説明図、第３図は第１図に示したフイルムに映
るリングパターン光に対応する像の説明図、第４
図は本考案に係る管の内面形状計測カメラヘツド
を取り付けた管の内面形状計測カメラの概略図、
第５図は従来の管の内面形状観察カメラの概略図
である。１……管、２……光源、３……リング、４，７
……レンズ、５，６……円錐ミラー、８……フイ
ルム。 Fig. 1 is a schematic diagram of the camera head for measuring the inner surface shape of a tube according to the present invention, Fig. 2 is an explanatory diagram of the ring shown in Fig. 1, and Fig. 3 shows the ring pattern light reflected on the film shown in Fig. 1. Explanatory diagram of the corresponding image, No. 4
The figure is a schematic diagram of a tube inner shape measuring camera equipped with a tube inner shape measuring camera head according to the present invention.
FIG. 5 is a schematic diagram of a conventional camera for observing the inner surface shape of a tube. 1...Tube, 2...Light source, 3...Ring, 4,7
...Lens, 5, 6...Conical mirror, 8...Film.

Claims

[Claims for Utility Model Registration] (1) So that the central axis approximately coincides with the central axis of the tube,
a ring projector that irradiates an annular ring pattern light onto the inner surface of the tube; a conical mirror provided so that its central axis substantially coincides with the central axis of the tube;
An image corresponding to the ring pattern light from the inner surface of the tube is captured via the conical mirror, and the depth of the hole in the tube is measured based on the captured shape of the image corresponding to the captured ring pattern light. A camera head for measuring the inner surface shape of a tube, characterized in that it is equipped with an imaging means for measuring the inner surface shape of a tube. (2) The ring projector includes a light source and is provided in front of the light source such that the central axis substantially coincides with the central axis of the tube, and a circumferential portion of a predetermined radius around the central axis is transparent. It is composed of a ring and a conical mirror provided in front of the ring so that its central axis substantially coincides with the central axis of the tube, and the imaging means captures the ring pattern light through the conical mirror. A camera head for measuring the inner surface shape of a tube as claimed in claim 1, which comprises a film for capturing a corresponding image. (3) The ring projector, the conical mirror, and the imaging means are integrally attached to an intra-pipe traveling device that is movable in the direction of the central axis of the pipe. Camera head.