Distal end part of endoscope

Details Distal end part of endoscope Distal end part of endoscope

1992-04-21

1994-04-26

Apley, Richard J.

Surgery

Truss

Perineal

A61B 106

Patent

active

053057368

ABSTRACT:
A distal end part of an endoscope, which has an objective optical system arranged to face forwardly in a distal end block, and a solid-state imaging device disposed in the distal end block at a position where an observed image is formed by the objective optical system. The distal end part includes a light guide fiber bundle for illuminating an observation filed of view of the object optical system, and a bore that is provided in the distal end block with an angle of inclination so that the boar approaches an optical axis of the objective optical system at the forward end thereof. The distal end part further includes a straight pipe shorter than the objective optical system, which is inserted into the bore and rigidly secured thereto, with the straight pipe receiving an exit end portion of the light guide fiber bundle, and an illuminating lens that is disposed in the forward end face of the distal end block at a position facing the exit end face of the light guide fiber bundle in order to enlarge the divergence angle of illuminating light emitted from the light guide fiber bundle.

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English Abstract of Japanese Patent No. 63-316013.
English Abstract of Japanese Patent No. 52-52386.

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