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US 8,944,603 B2Granted
Ophthalmologic apparatus
AssigneeCanon Kabushiki Kaisha
InventorToshifumi Masaki
Life of this patent
Estimating the term…
Abstract
An ophthalmologic apparatus includes an integration unit configured to integrate a light emission amount of a light source for illuminating a subject's eye, a comparison unit configured to compare an integration value by the integration unit with a first reference value, and an initialization unit configured to initialize the integration value if the integration value exceeds the first reference value as the comparison result by the comparison unit.
Claims18
An ophthalmologic apparatus comprising:
- an integration unit configured to integrate a light emission amount of a light source for illuminating a subject's eye;
- a comparison unit configured to compare an integration value indicating a light emission amount of the light source integrated by the integration unit with a predetermined reference value;
- a resetting unit configured to reset the integration value if a first integration value indicating a light emission amount of the light source exceeds a first reference value as a result of comparing the first integration value with the first reference value;
- and
- a light emission control unit configured to control light emission of the light source,
- wherein the comparison unit is configured to compare a second integration value indicating an integrated light emission amount of the light source after the integration value is reset by the resetting unit with a second reference value,
- wherein the light emission control unit is configured to stop the light emission of the light source if the second integration value exceeds the second reference value as a result of comparing the second integration value with the second reference value, and
- wherein the first reference value and second reference value are different values.
5 more elements
An ophthalmologic method comprising:
- integrating a light emission amount of a light source for illuminating a subject's eye;
- comparing an integration value indicating a light emission amount of the light source with a predetermined reference value;
- resetting the integration value if a first integration value indicating a light emission amount of the light source exceeds a first reference value as a result of comparing the first integration value with the first reference value;
- and
- controlling light emission of the light source,
- wherein comparing the integration value includes comparing a second integration value indicating an integrated light emission amount of the light source after the integration value is reset by the resetting unit with a second reference value,
- wherein controlling light emission of the light source includes stopping the light emission of the light source if the second integration value exceeds the second reference value as a result of comparing the second integration value with the second reference value, and
- wherein the first reference value and second reference value are different values.
5 more elements
A non-transitory computer readable medium comprising program code to cause an ophthalmologic apparatus to perform an ophthalmologic method comprising:
- integrating a light emission amount of a light source for illuminating a subject's eye;
- comparing an integration value indicating a light emission amount of the light source with a predetermined reference value;
- resetting the integration value if a first integration value indicating a light emission amount of the light source exceeds a first reference value as a result of comparing the first integration value with the first reference value;
- and
- controlling light emission of the light source,
- wherein comparing the integration value includes comparing a second integration value indicating an integrated light emission amount of the light source after the integration value is reset by the resetting unit with a second reference value,
- wherein controlling light emission of the light source includes stopping the light emission of the light source if the second integration value exceeds the second reference value as a result of comparing the second integration value with the second reference value, and
- wherein the first reference value and second reference value are different values.
5 more elements
An ophthalmologic apparatus comprising:
- an integration unit configured to integrate a light emission amount of a light source for illuminating a subject's eye;
- a comparison unit configured to compare an integration value indicating a light emission amount of the light source integrated by the integration unit with a predetermined reference value;
- a resetting unit configured to reset the integration value based on a result of comparing a first integration value indicating a light emission amount of the light source with the first reference value;
- and
- a light emission control unit configured to control light emission of the light source,
- wherein the comparison unit is configured to compare a second integration value indicating an integrated light emission amount of the light source after the integration value is reset by the resetting unit,
- wherein the light emission control unit is configured to reduce the light emission amount of the light source based on a result of comparing the second integration value with the second reference value,
- wherein the first reference value and second reference value are different values.
5 more elements
An ophthalmologic method comprising:
- integrating a light emission amount of a light source for illuminating a subject's eye;
- comparing an integration value indicating a light emission amount of the light source with a predetermined reference value;
- resetting the integration value based on a result of comparing a first integration value indicating a light emission amount of the light source with the first reference value;
- and
- controlling light emission of the light source,
- wherein comparing the integration value includes comparing a second integration value indicating an integrated light emission amount of the light source after the integration value is reset by the resetting unit,
- wherein controlling the light emission of the light source includes reducing the light emission amount of the light source based on a result of comparing the second integration value with the second reference value, and
- wherein the first reference value and second reference value are different values.
5 more elements
A non-transitory computer readable medium comprising program code to cause an ophthalmologic apparatus to perform an ophthalmologic method comprising:
- integrating a light emission amount of a light source for illuminating a subject's eye;
- comparing an integration value indicating a light emission amount of the light source with a predetermined reference value;
- resetting the integration value based on a result of comparing a first integration value indicating a light emission amount of the light source with the first reference value;
- and
- controlling light emission of the light source,
- wherein comparing the integration value includes comparing a second integration value indicating an integrated light emission amount of the light source after the integration value is reset by the resetting unit,
- wherein controlling the light emission of the light source includes reducing the light emission amount of the light source based on a result of comparing the second integration value with the second reference value, and
- wherein the first reference value and second reference value are different values.
5 more elements
An ophthalmologic apparatus comprising:
- an integration unit configured to integrate a light emission amount of a light source for illuminating a subject's eye, the integration unit connecting to a single comparator;
- and
- a light emission control unit configured to stop light emission of the light source after it is determined that an integration value indicating a light emission amount of the light source integrated by the integration unit connecting to the single comparator exceeds a predetermined reference value multiple times.
Dependencies are inferred from the claim text.