Endoscope
An endoscope comprises a first optical system, a second optical system, a light blocking shutter (35), a magnet rotor, drive coils (44, 45), detection coils (41, 42) and a CPU (80). The CPU (80) controls application of direct current to the drive coils (44, 45) and controls application of alternatin...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An endoscope comprises a first optical system, a second optical system, a light blocking shutter (35), a magnet rotor, drive coils (44, 45), detection coils (41, 42) and a CPU (80). The CPU (80) controls application of direct current to the drive coils (44, 45) and controls application of alternating current to the detection coils (41, 42), and when alternating current is applied to the detection coils (41, 42), detects a rotational position of the light blocking shutter (35) by detecting, from a value of the alternating current, changes in inductance when a magnetic field generated in a hollow part of the detection coils (41, 42) is blocked by a magnetic body. |
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