Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Luc Forand0
Pierre Mathieu0
Georges Fournier0
Date of Patent
March 24, 2009
0Patent Application Number
113354710
Date Filed
January 20, 2006
0Patent Primary Examiner
Patent abstract
An apparatus to obtain images of a target by an underwater video camera in a waterproof container wherein the target is illuminated by a laser beam. The shutter of the video camera is kept closed until a laser pulse has covered the distance to the target and nearly back to reduce the effect of reflection of the laser pulse by particles in the water. A holographic beam shaper in the path of the laser beam before a diverging lens is used to provide a 4 by 3 aspect ratio the same as the camera to illuminate the target.
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