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US 11,141,054 B2Granted
Endoscope and endoscope apparatus
AssigneeOlympus Corporation
InventorSho Nakamura
Life of this patent
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Abstract
An endoscope includes a sensor, and a temperature compensation circuit configured to perform temperature compensation of an output signal of the sensor, in a distal end portion. The temperature compensation circuit includes a differential amplifying section configured to amplify an output signal of the sensor, and a temperature sensing section in which a resistance is connected in series to a parallel connection portion of a temperature sensing element and a resistance.
Claims8
An endoscope comprising:
- an insertion portion;
- a sensor arranged in a distal end portion of the insertion portion;
- and
- a temperature compensation circuit configured to perform temperature compensation of an output signal of the sensor, arranged in the distal end portion of the insertion portion,
- wherein the temperature compensation circuit comprises:
- an operational amplifier configured to amplify an output signal of the sensor;
- and
- a temperature sensing section comprising:
- a temperature sensing element and a first resistance connected in a parallel connection;
- and
- a second resistance connected in series to the parallel connection of the temperature sensing element and the first resistance.
8 more elements
Dependencies are inferred from the claim text.