Structure of a light-receiving end portion of an endoscope light guide
First Claim
1. A structure of a light-receiving end portion of an endoscope light guide including a bundle of optical fibers comprising:
- an end part of the bundle of the optical fibers having an end plane for receiving light;
an adhesive applied to the end part for fixing the optical fibers together;
a support made of a metal of good heat conductivity, and provided with a bore into which said end part of the bundle of the optical fibers is inserted and also with an annular hole open to said bore and the outside; and
a transparent heat-resistant disc member fitted into said annular hole in a liquid tight state.
1 Assignment
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Accused Products
Abstract
A light-receiving end structure of an endoscope light guide comprises the illumination light-receiving end plane formed on an illumination light-receiving end portion of the light guide, an adhesive agent applied to the illumination light-receiving end portion to bond together optical fibers constituting the end portion, a transparent heat-resistant disc member mounted on the illumination light-receiving end plane, and a metal support surrounding the light-receiving end portion and the disc member in a liquid-tight state. The heat generated by light beams irradiated on the light-receiving end plane is conducted through the disc member to the support and then released into the open air. Therefore, the light-receiving end portion is not exposed to a high temperature. Accordingly, the light-receiving end structure is prominently increased in effective life.
58 Citations
16 Claims
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1. A structure of a light-receiving end portion of an endoscope light guide including a bundle of optical fibers comprising:
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an end part of the bundle of the optical fibers having an end plane for receiving light; an adhesive applied to the end part for fixing the optical fibers together; a support made of a metal of good heat conductivity, and provided with a bore into which said end part of the bundle of the optical fibers is inserted and also with an annular hole open to said bore and the outside; and a transparent heat-resistant disc member fitted into said annular hole in a liquid tight state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification