US PATENT SUBCLASS 348 / 31
BACK SCATTER REDUCTION
Current as of: June, 1999
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DEFINITION
Classification: 348/31
BACK SCATTER REDUCTION:
(under the class definition) Subject matter including means to minimize an adverse effect on a reproduced picture due to the presence of an imperfect optical medium between an object being viewed and a camera.
(1) Note. Examples of imperfect optical medium are turbid
water or atmospheric fog which may scatter light transmitted between the camera and the object, the reduction of backscattered light may be obtained by gating a camera during a period corresponding to the round trip transit time of light from the light source to the object and back to the camera.
