Patent ID: 7193702

Claim:
A fluid inspection device for inspecting a fluid in a vessel, the fluid inspection device comprising: an elongate insertion well having a rear end disposed at the wall of the vessel and a front end disposed in the interior of the vessel, an inside of the insertion well being sealed off from the fluid in the vessel and an outside of the insertion well being in contact with the fluid in the vessel; a camera unit disposed in the inside of the insertion well; a lens in operative communication with the camera unit and disposed at the front end of the insertion well so that a front end of the lens is in contact with the fluid and a rear end of the lens is inside the insertion well; and a light guide having a light emitting end and configured to guide light from the inside of the insertion well to the light emitting end, the light emitting end being disposed forward of the front end of the lens and directing the light at an angle toward the front end of the lens, a gap between the front end of the lens and the light emitting end capable of receiving the fluid.