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Endoscopy system

An endoscope and narrow-band technology, which is applied in the field of endoscope system, can solve the problems of not necessarily observing images and achieve a good effect of observing images

Active Publication Date: 2015-09-16
FUJIFILM CORP
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  • Description
  • Claims
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Problems solved by technology

Under such circumstances, the wavelength bands of the narrow-band light required for close-range observation and long-range observation are different, but in the endoscope system of Japanese Patent Laid-Open No. The amount of light is the same, so it may not be possible to obtain a good observation image

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Embodiment Construction

[0034] Such as figure 1As shown, the endoscope system 10 according to the first embodiment of the present invention includes: an electronic endoscope 11 for imaging the observed site in the patient's digestive tract or trachea; A processing device 12 generates an observation image from an imaging signal; a light source device 13 supplies illumination light for irradiating an observation site to the electronic endoscope 11; and a monitor 14 displays an observation image.

[0035] The endoscope system 10 has two observation modes, a normal observation mode and a special light observation mode. In the normal observation mode, the observation site is illuminated with broad-band light such as white light to observe the observation site as a whole. In the special light observation mode, narrow-band light is used to illuminate the observation site, so that superficial blood vessels and the like can be observed with emphasis. In addition, in the special light observation mode, there ...

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Abstract

PROBLEM TO BE SOLVED: To obtain a good special light image corresponding to a photographic condition (near view observation and distant view observation). SOLUTION: In a special light observation mode of an endoscope system, a rotational filter 32 for the special light observation is arranged on an optical path of a broad band region light BB emitted from a broad band region light source 30. A filter area 39 for near view observation inserted into the optical path in the near view observation and a filter area 40 for the distance view observation inserted in the light path in the distance view observation are provided in a concentric circle in the rotational filter 32 for the special light observation. In the filter area 39 for the near view observation, by making the area of a filter 41B for a first B narrow band region light larger than the area of a filter 41G for a first G narrow band region, it results in the B emitting time>the G emitting time, and the blood vessel in the surface layer is emphasized. In the filter area 40 for the distance view observation, by making the area of the filter 42G for the second G narrow band region light larger than the area of the filter 42B for the second B narrow band region light, it results in the G emitting time>the B emitting time, and the mucous membrane or the like in the bessel is more brightly displayed.

Description

technical field [0001] The present invention relates to an endoscope system for special light observation using light of two specific wavelengths. Background technique [0002] The endoscope includes an insertion unit to be inserted into the body, and an operation unit for manipulating a direction or the like for the insertion unit. An image sensor for imaging an observation site in the body is incorporated in the distal end of the insertion portion. During observation with the endoscope, illumination light is irradiated from the distal end portion to the observation site. The observed site under this illumination is imaged by an image sensor, and the obtained observed image is displayed on a monitor. [0003] In recent years, it is known that a specific narrow wavelength band (narrow band light) is irradiated as illumination light to living body tissue in an observation site, thereby obtaining, for example, an observation image in which blood vessels in the living tissue ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B1/04A61B1/05
Inventor 安田裕昭黑田修山口博司
Owner FUJIFILM CORP
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