Title:
LIGHT PROJECTION DEVICE AND LIGHT PROJECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/021658
Kind Code:
A1
Abstract:
A light projection device (1) is equipped with: a light source (2); an optical fiber (3) for projecting a laser beam (L) from the light source (2) through the tip (3a) of the optical fiber (3); a first scanning unit (5) for spirally scanning the spot (P1) of the laser beam (L) over an imaging subject (B) by spirally oscillating the tip (3a); an image-forming optical system (4) for projecting the spot (P1) of the laser beam (L) from the tip (3a) onto the imaging subject (B); a second scanning unit (6) for linearly scanning the spot (P1) in a direction along the optical axis (A) by moving at least part of the image-forming optical system (4) and the tip of the optical fiber (3) in a direction along the optical axis (A); and a control unit (7) for causing the spot (P1) to scan linearly during one spiral scanning period by controlling the first and second scanning units (5, 6) in a synchronized manner.
Inventors:
NAKAJIMA KEIICHIRO (JP)
NAMIKI MITSURU (JP)
FUKUSHIMA IKUTOSHI (JP)
MIKI TAKEHIRO (JP)
NAMIKI MITSURU (JP)
FUKUSHIMA IKUTOSHI (JP)
MIKI TAKEHIRO (JP)
Application Number:
PCT/JP2018/027921
Publication Date:
January 30, 2020
Filing Date:
July 25, 2018
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
G02B26/10; A61B1/00; G02B23/26
Domestic Patent References:
| WO2016103793A1 | 2016-06-30 |
Foreign References:
| JP2010213764A | 2010-09-30 | |||
| JP2017176471A | 2017-10-05 | |||
| US20160014383A1 | 2016-01-14 |
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
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