US 2008/0177144 A1 · Endoscope insertion portion

Abstract

There is provided an endoscope insertion portion capable of illuminating a diseased part corresponding to a part of an endoscope image by irradiation light in an amount approximately the same as that in non-enlarged display, when displaying the part of the endoscope image in an enlarged manner. The endoscope insertion portion of this invention includes: an insertion portion having a distal end surface; a first illumination optical system for irradiating light onto a subject; a second illumination optical system for irradiating light onto the subject; a first image pickup portion including on the distal end surface a first optical member for introducing light from the subject; and a second image pickup portion including a second optical member for introducing light from the subject, the second optical member being disposed in an area sandwiched by the first illumination optical system and the second illumination optical system.

Claims10

Dependent claims

An endoscope insertion portion comprising:

an insertion portion including a distal end surface;
a first illumination optical system for irradiating light onto a subject, the first illumination optical system being disposed on the distal end surface;
a second illumination optical system for irradiating light onto the subject, the second illumination optical system being disposed on the distal end surface;
a first image pickup portion including a first optical member for introducing light from the subject, the first optical member being provided on the distal end surface;
and
a second image pickup portion having a higher observation magnification than that of the first image pickup portion, including a second optical member for introducing light from the subject, the second optical member being disposed in an area sandwiched between the first illumination optical system and the second illumination optical system.

3 more elements

An endoscope insertion portion comprising:

an insertion portion including a distal end portion and a bending portion at a distal end part, the bending portion being bendable in a first direction approximately coincident with an up/down direction of a monitor screen on which an endoscope image is displayed;
a first image pickup portion for obtaining a first observation image;
a second image pickup portion for obtaining a second observation image, a part of the second observation image being capable of being displayed in an enlarged manner on a display portion;
a first observation optical system for condensing light incident on the first image pickup portion, the first observation optical system being disposed on the distal end portion;
a second observation optical system for condensing light incident on the second image pickup portion, the second observation optical system being disposed on the distal end portion;
two illumination optical systems for emitting illumination light supplied from an illumination portion, the two illumination optical systems being disposed on the distal end portion;
and
an air/water feeding portion approximately lined up on a straight line connecting centers of the respective first observation optical system and the second observation optical system on the distal end surface of the distal end portion, the air/water feeding portion including a spouting direction having a first angle with respect to the first direction so as to be separated by a predetermined distance from an axis in the first direction passing through near a center of the distal end surface, the spouting direction being a direction in which gas or liquid is spouted onto outer surfaces of the first observation optical system and the second optical system from a spouting port disposed on the distal end surface, wherein,
on the distal end surface, the two illumination optical systems are respectively disposed such that the second observation optical system approximately lines up on a straight line connecting respective centers of the two illumination systems.

6 more elements

Dependencies are inferred from the claim text.

Endoscope insertion portion

Life of this patent

Endoscope insertion portion

Life of this patent

Abstract

Claims10