Lighting device for endoscope, and endoscope device

Abstract

A lighting device for an endoscope, configured in such a manner than, in observing organism tissue using white light or special light, desired tissue information relating to the organism tissue is obtained in a clearer condition suitable for diagnosis. A lighting device for an endoscope, comprising: a first light source (51) using a semiconductor light emitting element as the light emitting source; a second light source (53) using a semiconductor light emitting element as the light emitting source, said semiconductor light emitting element having an emitted light wavelength different from that of the semiconductor light emitting element of the first light source (51); a wavelength conversion member (57) for emitting light by being excited by the light emitted from either the first light source (51) and / or the second light source (53); and a light amount ratio change means (55) for changing the ratio between the amount of the light emitted from the first light source (51) and the amount of the light emitted from the second light source (53). The configuration enables the light from the first light source (51) and the light from the second light source (53) to be arbitrarily generated to provide illumination light which corresponds to the absorption characteristics and diffusion characteristics of organism tissue and is suitable for diagnosis. As a result, desired tissue information relating to the organism tissue can be obtained in a clearer condition.

Description

technical field [0001] The present invention relates to an illumination device for an endoscope and an endoscope device. Background technique [0002] A general endoscope device guides the light from the lamp of the light source device to the front end of the endoscope by means of a light guide built in the insertion part of the endoscope inserted into the subject, and transmits light from the illumination window at the front end of the endoscope to the front end of the endoscope. emit light to illuminate the observation site of the subject. White light is usually used in the observation of living tissue, but in recent years, an endoscope device has been effectively used to irradiate light of a specific narrow-band wavelength to enhance the display of the state of mucosal tissue or to enable observation Special light observation of autofluorescence from a pre-charged fluorescent substance (Patent Documents 1 and 2). In this type of endoscopic device, by irradiating biologi...

AI Technical Summary

Problems solved by technology

However, in the endoscope device using the above-mentioned color filter, it is difficult to limit the transmission wavelength band of the color filter to a specific narrow wavelength band when observing tissue information of living tissue, especially the superficial layer. In addition, the illumination light limited to a narrow band cannot obtain a sufficient amount of light, which has the disadvantage of deteriorating the image quality of the observed image

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