Endoscope device

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope device capable of obtaining a bright captured image optimal for observing a structure and a component of a living body such as a microscopic blood vessel of a surface layer without making an operator intentionally adjust image processing and a light emission ratio between white illumination light and special light, such as a light emission amount while observing a captured image, in a special light observation. SOLUTION: The endoscopic device is provided which includes a light source part having a light source for emitting wide band light and a filter part equipped with an optical filter set for narrowing the band width of the spectrum of wide band light to form narrow band light with a predetermined wavelength band to emit surface sequential light, an imaging means for taking a captured image to output captured image information, an image processing means for performing predetermined image processing to the captured image information, and an imaging information detecting means for detecting an automatic exposure value, imaging magnification or subject information as imaging information. The optical filter set and an image processing condition are changed so as to change the detecting and emphasizing degrees of the structure and the component of the living body of the subject.

Description

technical field [0001] The present invention relates to an endoscope device capable of special light observation using broadband light such as white illumination light as specific narrow-band light through a filter. Background technique [0002] In recent years, a so-called endoscope device capable of special light observation has been used to obtain tissue information at a desired depth of the living tissue by irradiating specific narrow-band light (narrow-band light) to the mucous membrane tissue of the living body. Such an endoscope device can easily visualize biological information that cannot be obtained in ordinary observation images, such as the fine structure of new blood vessels generated in the mucosal layer or submucosa layer, and the emphasis of a lesion. For example, when the object of observation is a cancerous lesion, the state of micro blood vessels or microstructures on the surface of the tissue can be observed in more detail when the mucosal tissue is irrad...

AI Technical Summary

Problems solved by technology

[0011] In the above special light observation process, when the distance between the diseased tissue and the irradiation position of the special light is short, it is possible to draw bright and easy-to-see fine blood vessels or fine structures on the surface of the tissue, but there are Dim and hard to see problems with increasing distance

[0012] In addition, as described above, the magnification of the subject tissue changes due to the change in the distance between the lesion tissue and the irradiation position of the special light. Therefore, when the pixel size of the blood vessel projected on the imaging device changes, it may be difficult to recognize the fine blood vessels on the surface. question

[0013] Furthermore, when it is far away from the imaging position, not individual superficial microvessels, but individual blocks of dense superficial microvessels called brownish (brownish) regions become the observation objects, and it is necessary to analyze the captured image Applicable image processing varies, but these image processing switching is generally performed manually, so there is a problem that it may not be possible to properly emphasize the image

Images