Light source device, control method, and computer-readable recording medium
AssigneeOlympus Medical Systems Corp.
InventorsMotoki Tabata, Yusuke Yabe
Life of this patent
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Abstract
A light source device includes: a fluorescent material configured to rotate about a rotation axis, and emit fluorescence upon reception of excitation light; a light source configured to emit the excitation light; an optical filter that is arranged to cover a part of the fluorescent material from a direction along the rotation axis, the optical filter being configured to pass light of some wavelength band in the fluorescence generated by excitation of the fluorescent material; and a first processor configured to control a rotation operation of the fluorescent material about the rotation axis, and an operation of the light source.
Claims13
A light source device comprising:
- a fluorescent material configured to rotate about a rotation axis, and emit fluorescence upon reception of excitation light;
- a light source configured to emit the excitation light;
- an optical filter that is arranged to cover a part of the fluorescent material from a direction along the rotation axis, the optical filter being configured to pass light of some wavelength band in the fluorescence generated by excitation of the fluorescent material;
- and
- a first processor configured to control a rotation operation of the fluorescent material about the rotation axis, and an operation of the light source, the first processor being configured to control the rotation operation of the fluorescent material such that the optical filter is placed at and removed from an irradiation position at which the excitation light is irradiated to the fluorescent material according to an imaging period in which the fluorescence reflected from a subject is captured by an imager;
- wherein the fluorescence generated by the excitation of the fluorescent material is fluorescence including a wavelength band of amber.
A control method performed by a processor of a light source device including
- a fluorescent material configured to rotate about a rotation axis, and emit fluorescence upon reception of excitation light,
- a light source configured to emit the excitation light, and
- an optical filter that is arranged to cover a part of the fluorescent material from a direction along the rotation axis, the optical filter being configured to pass light of some wavelength band in the fluorescence generated by excitation of the fluorescent material,
- the method comprising:
- in a first observation mode, controlling a rotation operation of the fluorescent material to set such that an imaging period in which the fluorescence reflected from a subject is captured by an imager and a first period in which an area without the optical filter is positioned at an irradiation position at which the excitation light is irradiated to the fluorescent material overlap, the first observation mode being a normal observation mode to observe the subject by using the fluorescence that has been generated upon the excitation of the fluorescent material and that has not passed through the optical filter;
- and
- lighting the light source in a second period in which the imaging period and the first period overlap.
A non-transitory computer-readable recording medium that stores a computer program to be executed by a processor of a light source device including
- a fluorescent material configured to rotate about a rotation axis, and emit fluorescence upon reception of excitation light,
- a light source configured to emit the excitation light, and
- an optical filter that is arranged to cover a part of the fluorescent material from a direction along the rotation axis, the optical filter being configured to pass light of some wavelength band in the fluorescence generated by excitation of the fluorescent material,
- the program causing the processor to execute:
- in a first observation mode, controlling a rotation operation of the fluorescent material to set such that an imaging period in which the fluorescence reflected from a subject is captured by an imager and a first period in which an area without the optical filter is positioned at an irradiation position at which the excitation light is irradiated to the fluorescent material overlap, the first observation mode being a normal observation mode to observe the subject by using the fluorescence that has been generated upon the excitation of the fluorescent material and that has not passed through the optical filter;
- and
- lighting the light source in a second period in which the imaging period and the first period overlap.
Dependencies are inferred from the claim text.