| 摘要 |
This invention relates to a camera assembly for the inspection of passageways. In particular this invention relates to a camera assembly for the inspection of wellbores and designed to operate in high temperature environments. A camera assembly for the inspection of wellbores comprises an elongate housing having a first end and a second end and, extending between the ends, a side wall comprising an inner wall and an outer wall, with a vacuum formed between the inner and outer walls; an elongate relay lens having a first end and a second end, the relay lens being located within the housing; an optically transparent window located at the first end of the relay lens; an image sensor located at the second end of the relay lens for capturing an image of an object viewable through the relay lens and window; and a light source arranged to emit light from the housing, for illuminating the viewable object. |
