US 2021/0228068 A1Published application

Endoscope system

AssigneeHoya Corporation

InventorToru CHIBA

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Abstract

Provided is a technology capable of generating and presenting more kinds of special light images with higher image quality. An endoscope system according to the present disclosure performs image processing using a G1 image data (image data obtained by irradiating light of 524±3 nm to 582±3 nm) and at least one of R1 image (image data obtained by irradiating light of 630±3 nm to 700±3 nm) data other than the G1 image data, B1 image data (452±3 nm to 502±3 nm), R2 image data (image data obtained by irradiating light of 582±3 nm to 630±3 nm), G2 image data (image data obtained by irradiating light of 502±3 nm to 524±3 nm), and B2 image data (image data obtained by irradiating light of 420±3 nm to 452±3 nm) so as to generate a special light image (FIG. 7).

Claims19

Dependent claims

An endoscope system capable of operating in a normal observation mode for irradiating a biological tissue with white light to acquire an image and a special observation mode for irradiating a biological tissue with light of a specific wavelength band to acquire an image, comprising:

an illumination unit that irradiates a biological tissue with illumination light including at least R of a first wavelength band, G of a second wavelength band, B of a third wavelength band, R of a fourth wavelength band, G of a fifth wavelength band, and B of a sixth wavelength band;
an imaging unit that generates image data based on reflected light from the biological tissue generated by irradiating the biological tissue with the illumination light;
an image processing unit that acquires the image data from the imaging unit and performs a predetermined image process;
and
a display unit that displays an image generated by the predetermined image process of the image processing unit on a screen,
wherein at least the second wavelength band, the third wavelength band, the fifth wavelength band, and the sixth wavelength band are defined with boundaries therebetween by a wavelength at an isosbestic point at which transmittance becomes constant regardless of oxygen saturation,
the second wavelength band includes within the band an isosbestic point other than the isosbestic point which is the boundary of the band, the sixth wavelength band is a shorter wavelength band than the third wavelength band, the fifth wavelength band is a shorter wavelength band than the second wavelength band, the fourth wavelength band is a shorter wavelength band than the first wavelength band,
the image data includes R1 image data corresponding to R light of the first wavelength band, G1 image data corresponding to G light of the second wavelength band, B1 image data corresponding to B light of the third wavelength band, R2 image data corresponding to R light of the fourth wavelength band, G2 image data corresponding to G light of the fifth wavelength band, and B2 image data corresponding to B light of the sixth wavelength band, and
the image processing unit generates a special light image by performing an image process using the G1 image data and at least one of the R1 image data, the B1 image data, the R2 image data, the G2 image data, and the B2 image data other than the G1 image data.

6 more elements

an illumination unit that irradiates a biological tissue with illumination light;
an optical element that divides reflected light from the biological tissue generated by irradiating the biological tissue with the illumination light, and outputs at least a first reflected light and a second reflected light;
a first optical filter that transmits light of a wavelength band of a first group in the first reflected light;
a second optical filter that transmits light of a wavelength band of a second group containing a part of wavelength band of the first group;
a first imaging unit that generates first image data corresponding to light of a predetermined wavelength band based on light of the wavelength band of the first group;
a second imaging unit that generates second image data corresponding to light of a wavelength band, which is contained in the predetermined wavelength band and narrower than the predetermined band, based on light of the wavelength band of the second group;
an image processing unit that calculates a feature of a spectral characteristic of the biological tissue in the wavelength band narrower than the predetermined wavelength band by dividing the first image data by the second image data;
and
an output unit that outputs a calculation result of the image processing unit,
wherein an exposure time of the second imaging unit is set to be longer than an exposure time of the first imaging unit.

7 more elements

An endoscope system capable of operating in a normal observation mode for irradiating a biological tissue with white light to obtain an image and a special observation mode for irradiating a biological tissue with light of a specific wavelength band to obtain an image, comprising:

an illumination unit that irradiates the biological tissue with illumination light;
an optical element that includes a layer of an optical filter instead of a beam splitting film, transmits a first wavelength band light, which is light of a predetermined wavelength band group in the reflected light from the biological tissue generated by irradiating the biological tissue with the illumination light, through a layer of the optical filter, reflects a second wavelength band light, which is light of a wavelength group other than the predetermined wavelength band group on a layer of the optical filter, and outputs the first wavelength band light and the second wavelength band light;
a first imaging unit that generates first image data corresponding to light of the predetermined wavelength band group based on the first wavelength band light;
a second imaging unit that generates second image data corresponding to light of a wavelength group other than the predetermined wavelength band group based on the second wavelength band light;
an image processing unit that performs predetermined image processing based on the first image data and the second image data;
and
an output unit that outputs a calculation result of the image processing unit.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/048,425Filed 30 Aug 2019
Priority: JP 2018-16366731 Aug 2018
Published: 29 Jul 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

G02B 23/2469
Illumination: using optical fibres
A61B 1/000094
Of image signals during a use of endoscope: extracting biological structures
A61B 1/00043
Operational features of endoscopes: provided with output arrangements
A61B 1/044
Combined with photographic or television appliances: for absorption imaging

Family

US 11,885,954 B2Related patent
US 2021/0228068 A1This patent

From the US filing history. Foreign family members aren’t listed.

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