Light source device for endoscope

By using multiple excitation laser light sources and one illumination light source in the endoscope light source device, and using the design of a concentrating optical system and glass rod, the problems of low optical efficiency and uneven light illumination in the prior art are solved, and efficient convergence and uniform illumination of light are achieved.

CN119699991APending Publication Date: 2025-03-28OLYMPUS CORPORATION(JP)
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Patent Information

Application Number
CN202411148528.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-09-27
Filing Date
2024-08-21
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing endoscope light source device has problems of inefficiency and uneven light illumination in optical system design and optical fiber bundle configuration, especially when the optical expansion amounts of the excitation laser light source and the illumination light source do not match.

Method used

Using a plurality of excitation laser light sources and an illumination light source, the excitation light and the white light are converged by the first and second concentrating optical systems, and then incident on the glass rod through the plurality of first and second optical fiber bundles, the glass rod design is used to efficiently guide and uniformize the light.

Benefits of technology

It realizes efficient convergence and uniform irradiation of light, reduces the loss of light quantity, and improves the matching degree of the lighting effect of the endoscope and the optical expansion quantity.

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Abstract

A light source device for an endoscope is provided with: a plurality of laser light sources for excitation; a plurality of first light collecting optical systems comprising optical systems for collecting excitation light from the plurality of excitation laser light sources; a plurality of first optical fiber bundles to which the excitation light focused by the plurality of first light focusing optical systems is incident, respectively; an illumination light source that generates white light; a second condensing optical system that condenses white light emitted from the illumination light source; a second optical fiber bundle to which the light from the illumination light source, which has been focused by the second light-focusing optical system, is incident; the first emergent end of the first optical fiber bundle and the second emergent end of the second optical fiber bundle are bundled on the first glass rod, and the first end face of the first glass rod is connected with the emergent end faces of the first optical fiber bundle and the second optical fiber bundle. A connection part of an illumination optical system of the endoscope is provided on a second end surface of the first glass rod on the opposite side from the first end surface.
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