Optical scanning apparatus and method of controlling optical scanning apparatus
AssigneeOlympus Corporation
InventorAtsuyoshi Shimamoto
Life of this patent
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Abstract
An optical scanning apparatus includes an optical fiber that emits illumination light from a distal end thereof toward a subject, an actuator that oscillates the distal end of the optical fiber, and a controller that controls the actuator so as to two-dimensionally scan the illumination light on the subject and so as to satisfy Conditional Expression of P1≤0.5×D, where D is a spot diameter of the illumination light on the subject, and P1 is a scanning-line pitch of the illumination light on the subject.
Claims19
An optical scanning apparatus comprising:
- an optical fiber that emits illumination light from a distal end thereof toward a subject;
- an actuator that oscillates the distal end of the optical fiber;
- and
- a controller that controls the actuator so as to two-dimensionally scan the illumination light emitted from the distal end of the optical fiber on the subject,
- wherein the controller controls the actuator so as to satisfy Conditional Expression (1) below:
- P1≤0.5×D, (1)
- where D is a spot diameter of the illumination light on the subject, and P1 is a scanning-line pitch of the illumination light on the subject.
An optical scanning apparatus comprising:
- an optical fiber that emits illumination light from a distal end thereof toward a subject;
- an actuator that oscillates the distal end of the optical fiber;
- a controller that controls the actuator so as to two-dimensionally scan the illumination light emitted from the distal end of the optical fiber on the subject;
- and
- a light detecting unit that detects observation light generated in the subject as a result of the subject being irradiated with the illumination light,
- wherein the controller controls the light detecting unit so as to satisfy Conditional Expression (2) below:
- P2≤0.5×D, (2)
- where D is a spot diameter of the illumination light on the subject, and P2 is a sampling pitch of the observation light on the subject.
A method of controlling an optical scanning apparatus that spirally scans light emitted from a distal end of an optical fiber on a subject, wherein, in a control step in which an actuator that oscillates the distal end of the optical fiber so as to two-dimensionally scan the illumination light emitted from the distal end of the optical fiber on the subject is controlled, the actuator is controlled so as to satisfy Conditional Expression (1) below:
- P1≤0.5×D, (1)
- where D is a spot diameter of the illumination light on the subject, and P1 is a scanning-line pitch of the illumination light on the subject.
Dependencies are inferred from the claim text.