The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2020
Filed:
Mar. 02, 2018
Olympus Corporation, Tokyo, JP;
Atsuyoshi Shimamoto, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A light-scanning apparatus according to the present invention is provided with: an optical fiber; a signal-generating portion that generates a driving signal that has a frequency fd different from a resonant frequency fr of the optical fiber; and a driving portion that causes a distal end of the optical fiber to undergo spiral oscillations in accordance with the driving signal, wherein the signal-generating portion generates the driving signal that includes, during one scanning period, a first period in which an amplitude gradually increases from substantially zero to a maximum value and a second period in which the amplitude gradually decreases from the maximum value to substantially zero, and that satisfies conditional expression (1) below. N2 is the number of oscillations of the driving signal in the second period.