| 摘要 |
PURPOSE:To make the arrangement of an electronic appliance in the inside of a vessel unnecessary, and to obtain an image pickup device capable of increasing/decreasing the range of the visual field of a camera, by moving a light source and the camera along the end faces of a light guide and an image fiber. CONSTITUTION:The one ends 17 and 18 side of a image fiber set 15 and a light guide set 16 are positioned in the inside of the vessel 10, and the other ends 19 and 20, at the outside. The light source 25 is provided on the other end 20 side of the light guide, and projects a light beam on the light guide. Also, the plural number of first lenses are provided on the end 18 wide of the light guide respectively, and the range of the light beam to be projected on the wall plane 28 of the vessel 10 is varied at every light guide. Meanwhile, the plural number of second lenses are provided on one ends 17 side of the image fiber corresponding to first lenses, and receive the light beam reflected on the wall plane 28, and project on the image fiber, and a television camera 23 is provided on the other end 19 wide, and receives the beam of light projected on the image fiber. A moving mechanism 29 moves the camera 23 and the light source 25, and positions them at a prescribed image fiber and light guide. |
