PROBLEM TO BE SOLVED: To provide a capsule endoscope which has attained miniaturization, wider angle, and wider light distribution.SOLUTION: The capsule endoscope comprises: object lenses 4 transparent domes 2 covering the respective object sides of the object lenses 4 and light emitting elements 5 disposed on the peripheral portions of the object lenses 4. In the capsule endoscope, the two object lenses 4 are arranged one behind the other, the transparent dome 2 is arranged so as to cover the objective side of the object lenses 4, and the light emitting elements 5 are arranged on the peripheral portions of the object lenses 4. The light emitting elements 5 disposed one behind the other are arranged in positions receding from the respective leading ends of the object lenses 4 and obliquely outward with respect to the respective central axes of the object lenses 4, so that light rays distributed by the light emitting elements 5 intersect at the front and back on the peripheries.COPYRIGHT: (C)2012,JPO&INPIT【課題】小型化、広角化、広配光化が可能なカプセル内視鏡を提供する。【解決手段】対物レンズ4と、対物レンズ4の物体側を覆う透明ドーム2と、対物レンズ4の周辺の外周部に配置された発光素子5とを備えたカプセル内視鏡において、前後に2つの対物レンズ4と、対物レンズ4の物体側を覆う透明ドーム2と、対物レンズ4の周辺の外周部に配置された発光素子5が配置されており、前後に配置した発光素子5の配光が前後で周辺で交わるように、前後の発光素子5が各対物レンズ4先端より後退した位置に各対物レンズ4の中心軸に対して外側に傾けて斜めに配置されている。【選択図】図2
