Light source device

A light source device further comprising:

• a first light source configured to generate first light having intensity in a first wavelength band and having a first optical spectrum;
• a second light source configured to generate second light having intensity in a second wavelength band adjoining to the first wavelength band and a second optical spectrum overlapping with a part of the first optical spectrum;
• a sensor configured to detect an emitted light amount of the first light source;
• and
• a processor configured to:
• at a time of causing the first light source and the second light source to simultaneously perform light emission, cause the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• acquire first control information used to adjust a light amount of the first light at the time of causing the first light source and the second light source to simultaneously perform light emission by correcting sensor characteristic information showing a correlation between an emitted light amount of the first light source in a case where the first light source is caused to perform light emission alone and a sensor detection value obtained according to the light amount detected by the sensor, the correcting sensor characteristic information being based on the first mixed light amount and a light amount ratio between the first light and the second light, and
• acquire second control information for adjusting a light amount of the second light at the time of causing the first light source and the second light source to simultaneously perform light emission according to the light amount of the first light set using the first control information, based on the first mixed light amount, the second mixed light amount and the light amount ratio.

An endoscope system comprising:

• an endoscope configured to pick up an image of an object and output an image pickup signal;
• and
• a light source device configured to supply illumination light for illuminating the object to the endoscope, the light source device comprising:
• a first light source configured to generate first light having intensity in a first wavelength band and having a first optical spectrum;
• a second light source configured to generate second light having intensity in a second wavelength band adjoining to the first wavelength band and having a second optical spectrum overlapping with a part of the first optical spectrum;
• a first sensor configured to detect an emitted light amount of the first light source;
• a second sensor configured to detect an emitted light amount of the second light source;
• and
• a processor configured to:
• at a time of causing the first light source and the second light source to simultaneously perform light emission, cause the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• at the time of causing the first light source and the second light source to simultaneously perform light emission, cause the second light to be generated with a light amount adjusted according to a second mixed light amount which is a light amount of the first light mixed in the second wavelength band;
• acquire first control information used to adjust a light amount of the first light at the time of causing the first light source and the second light source to simultaneously perform light emission by correcting first sensor characteristic information showing a correlation between an emitted light amount of the first light source in a case where the first light source is caused to perform light emission alone and a sensor detection value obtained according to the light amount detected by the first sensor, the correcting first sensor characteristic information being based on the first mixed light amount and a light amount ratio between the first light and the second light;
• and
• acquire second control information used to adjust a light amount of the second light at the time of causing the first light source and the second light source to simultaneously perform light emission by correcting second sensor characteristic information showing a correlation between an emitted light amount of the second light source in a case where the second light source is caused to perform light emission alone and a sensor detection value obtained according to the light amount detected by the second sensor, the correcting second sensor characteristic information being based on the second mixed light amount and the light amount ratio.

A method of controlling a light source device for an endoscope, the light source device being configured to supply illumination light for illuminating an object to the endoscope configured to pick up an image of the object and output an image pickup signal, the method comprising:

• generating first light having intensity in a first wavelength band and having a first optical spectrum;
• generating second light having intensity in a second wavelength band adjoining to the first wavelength band and having a second optical spectrum overlapping with a part of the first optical spectrum;
• detecting an emitted light amount of the first light;
• detecting an emitted light amount of the second light;
• at a time of simultaneously generating the first light and the second light, causing the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• at the time of simultaneously generating the first light and the second light, causing the second light to be generated with a light amount adjusted according to a second mixed light amount which is a light amount of the first light mixed in the second wavelength band;
• acquiring first control information used to adjust a light amount of the first light at the time of simultaneously generating the first light and the second light by correcting first sensor characteristic information showing a correlation between an emitted light amount of the first light in a case where the first light is caused to perform light emission alone and a sensor detection value obtained according to the detected light amount of the first light, the correcting first sensor characteristic information being based on the first mixed light amount and a light amount ratio between the first light and the second light;
• and
• acquiring second control information used to adjust a light amount of the second light at the time of simultaneously generating the first light and the second light by correcting second sensor characteristic information showing a correlation between an emitted light amount of the second light in a case where the second light is caused to perform light emission alone and a sensor detection value obtained according to the detected light amount of the second light, the correcting second sensor characteristic information being based on the second mixed light amount and the light amount ratio.

An endoscope system comprising:

• an endoscope configured to pick up an image of an object and output an image pickup signal;
• and
• a light source device configured to supply illumination light for illuminating the object to the endoscope, the light source device comprising:
• a first light source configured to generate first light having intensity in a first wavelength band and having a first optical spectrum;
• a second light source configured to generate second light having intensity in a second wavelength band adjoining to the first wavelength band and a second optical spectrum overlapping with a part of the first optical spectrum;
• a sensor configured to detect an emitted light amount of the first light source;
• and
• a processor configured to:
• at a time of causing the first light source and the second light source to simultaneously perform light emission, cause the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• acquire first control information used to adjust a light amount of the first light at the time of causing the first light source and the second light source to simultaneously perform light emission by correcting sensor characteristic information showing a correlation between an emitted light amount of the first light source in a case where the first light source is caused to perform light emission alone and a sensor detection value obtained according to the light amount detected by the sensor, the correcting sensor characteristic information being based on the first mixed light amount and a light amount ratio between the first light and the second light, and
• acquire second control information for adjusting a light amount of the second light at the time of causing the first light source and the second light source to simultaneously perform light emission according to the light amount of the first light set using the first control information, based on the first mixed light amount, the second mixed light amount and the light amount ratio.

A method of controlling a light source device for an endoscope, the light source device being configured to supply illumination light for illuminating an object to the endoscope configured to pick up an image of the object and output an image pickup signal, the method comprising:

• generating first light having intensity in a first wavelength band and having a first optical spectrum;
• generating second light having intensity in a second wavelength band adjoining to the first wavelength band and a second optical spectrum overlapping with a part of the first optical spectrum;
• detecting an emitted light amount of the first light;
• at a time of simultaneously generating the first light and the second light, causing the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• acquiring first control information used to adjust a light amount of the first light at the time of simultaneously generating the first light and the second light by correcting sensor characteristic information showing a correlation between an emitted light amount of the first light where the first light is generated alone and a sensor detection value obtained according to the detected light amount, the correcting sensor characteristic information being based on the first mixed light amount and a light amount ratio between the first light and the second light, and
• acquiring second control information for adjusting a light amount of the second light at the time of simultaneously generating the first light and the second light according to the light amount of the first light set using the first control information, based on the first mixed light amount, the second mixed light amount and the light amount ratio.

An endoscope system comprising:

• an endoscope configured to pick up an image of an object and output an image pickup signal;
• and
• a light source device configured to supply illumination light for illuminating the object to the endoscope, the light source device comprising:
• a first light source configured to generate first light having intensity in a first wavelength band and having a first optical spectrum;
• a second light source configured to generate second light having intensity in a second wavelength band adjoining to the first wavelength band and having a second optical spectrum overlapping with a part of the first optical spectrum;
• a third light source configured to generate third light having a third optical spectrum having intensity in a third wavelength band adjoining to the second wavelength band and overlapping with a part of the second optical spectrum without overlapping with the first optical spectrum;
• a processor;
• and
• an operation panel capable of inputting, to the processor, a first instruction to cause the first light and the second light to be simultaneously emitted and a second instruction to cause the first light and the third light to be simultaneously emitted;
• wherein
• the processor being configured to:
• at a time of causing the first light source and the second light source to simultaneously perform light emission, cause the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• and
• cause the first light to be generated with the light amount adjusted according to the first mixed light amount and causes the second light to be generated with a light amount adjusted according to a second mixed light amount, which is a light amount of the first light mixed in the second wavelength band, when the first instruction is inputted from the operation panel, and causes the first light to be generated without performing light amount adjustment according to the first mixed light amount and causes the third light to be generated without performing light amount adjustment according to a third mixed light amount, which is a light amount of the second light mixed in the third wavelength band, when the second instruction is inputted from the operation panel.

A method of controlling a light source device for an endoscope, the light source device being configured to supply illumination light for illuminating an object to the endoscope configured to pick up an image of the object and output an image pickup signal, the method comprising:

• generating first light having intensity in a first wavelength band and having a first optical spectrum;
• generating second light having intensity in a second wavelength band adjoining to the first wavelength band and having a second optical spectrum overlapping with a part of the first optical spectrum;
• generating third light having a third optical spectrum having intensity in a third wavelength band adjoining to the second wavelength band and overlapping with a part of the second optical spectrum without overlapping with the first optical spectrum;
• inputting a first instruction to cause the first light and the second light to be simultaneously emitted and a second instruction to cause the first light and the third light to be simultaneously emitted;
• at a time of simultaneously generating the first light and the second light, causing the first light to be generated with a light amount adjusted according to a first mixed light amount which is a light amount of the second light mixed in the first wavelength band;
• and
• causing the first light to be generated with the light amount adjusted according to the first mixed light amount and causes the second light to be generated with a light amount adjusted according to a second mixed light amount, which is a light amount of the first light mixed in the second wavelength band, when the first instruction is input, and causing the first light to be generated without performing light amount adjustment according to the first mixed light amount and causing the third light to be generated without performing light amount adjustment according to a third mixed light amount, which is a light amount of the second light mixed in the third wavelength band, when the second instruction is input.