Laser underwater camera image enhancer

Details Laser underwater camera image enhancer Laser underwater camera image enhancer

H - Electricity

04

N

H04N 5/225 (2006.01) G02B 27/09 (2006.01) G03B 15/03 (2006.01) G03B 17/08 (2006.01) H04N 5/247 (2006.01) G01S 15/08 (2006.01)

Patent

CA 2547665

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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