The “Hole Inspection Lens PHL178” allows for 360° observation of the inner wall surface. Due to its compact size, the lens can be inserted into and used for inspection of holes with a diameter of φ45mm or greater.
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A black rubber sheet was attached to a cylindrical PVC pipe with a diameter of approximately φ100mm, and the inner wall was observed.
(Equipment used: Inner Wall Inspection Microscope PHL200BA)
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▼camera setup |
Since black rubber tends to absorb light, the image can easily become dark. However, by adjusting the lighting and camera settings, it was possible to observe with sufficient brightness.
Even if the light is insufficient, it can be brightened by modifying the illumination. We experimented by attaching commercially available LED tape lights to the side of the lens.
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By using the Matsuden Corporation CS/EG series cameras, which are compact, the entire camera can be inserted into the interior, allowing for 360° observation of the inner wall.
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The camera can be inserted into a cylinder with an internal diameter of φ45mm, enabling observation of the inner walls.
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By manufacturing a jig for inserting the camera, it is possible to observe the inner walls of deep holes.
