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Endoscope 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: 2012-07-11
FUJIFILM CORP
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  • Summary
  • Abstract
  • 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

Method used

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Embodiment Construction

[0034] like 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 are...

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Abstract

The invention provides an endoscope system, wherein under a special light observation mode, a rotary filter for special light observation is set to be in the optical path of wide wavelength-band lights (BB). The rotary filter is concentrically provided in the close-range observation filter region of the optical path. When the filter region for close-range observation is set in the optical path of wide wavelength-band lights (BB), in order to emphasize the surface vascellum, the irradiation period of the b narrow-band light (Bn) is longer than that of the G narrow-band light (Gn). In the other way, when the filter region for wide-range observation is set in the optical path of wide wavelength-band lights (BB), in order to emphasize the intraductal mucosa, the irradiation period of the G narrow-band light (Gn) is longer than that of the B narrow-band light (Bn).

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 Applications(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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