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US 2006/0235276 A1Published application
Endoscope
AssigneeOlympus Corporation
InventorsSeisuke Takase, Masaaki Miyagi, Hiroki Moriyama
Life of this patent
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Abstract
An endoscope includes an insertion unit; an observation optical system arranged at an end surface of the insertion unit in an inserting axis direction and having a wide viewing angle for observing a body cavity; and a plurality of illumination optical systems arranged on an axis slanted with respect to the inserting axis direction of the insertion unit and used when illuminating the body cavity. An illumination lens of at least one of the illumination optical systems is subjected to light diffusion process.
Claims11
An endoscope comprising:
- an insertion unit;
- an observation optical system arranged at an end surface of the insertion unit in an inserting axis direction and having a wide viewing angle for observing a body cavity;
- and
- a plurality of illumination optical systems arranged on an axis slanted with respect to the inserting axis direction of the insertion unit and used when illuminating the body cavity, wherein
- an illumination lens of at least one of the illumination optical systems is subjected to light diffusion process.
2 more elements
An endoscope comprising:
- an insertion unit;
- an observation optical system arranged in an inserting axis direction of the insertion unit and used when observing a body cavity having a wide viewing angle;
- at least one illumination optical system arranged at an end surface of an axis slanted with respect to the inserting axis direction of the insertion unit and used when illuminating the body cavity;
- an optical fiber bundle connected to a back end of at least one illumination lens, and including a rigid portion at a front in the inserting axis direction and a soft portion at a back in the inserting axis direction;
- and
- a rigid part, arranged at the insertion unit, for grasping the optical fiber bundle, wherein
- a back end of the rigid portion of the optical fiber bundle is arranged on a proximal end side than a back end face of the rigid part in the inserting axis direction.
4 more elements
Dependencies are inferred from the claim text.