Patent ID: 8636653

Claim:
An endoscope comprising: a housing sufficiently small to travel through a gastrointestinal tract of a human, the housing comprising a tubular wall; a transmitter enclosed within said housing, to transmit image data to an external device; a set of one or more sensors enclosed within said housing and coupled to said transmitter, said set supplying said image data to said transmitter; a first source enclosed within said housing, to generate first electromagnetic radiation exiting said housing; wherein said first source is positioned at a first location whereby said first electromagnetic radiation passes through a first region of the housing defined by a first intersection of said first electromagnetic radiation with a surface of the housing; a second source enclosed within said housing, to generate second electromagnetic radiation exiting said housing; wherein said second source is positioned at a second location whereby the second electromagnetic radiation passes through a second region of the housing defined by a second intersection of said second electromagnetic radiation with the surface of the housing; wherein the first region is larger than the second region; wherein a third electromagnetic radiation enters said housing through said tubular wall, to form said image data; and wherein at least a portion of said third electromagnetic radiation arises from reflection of a fraction of said first and second electromagnetic radiation.