Title:
BESSEL BEAM GENERATION DEVICE AND OPTICAL SCANNING DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/210793
Kind Code:
A1
Abstract:
[Problem] To make it possible to improve the degree of freedom of design. [Solution] The present invention divides laser light emitted from one light source, and causes donut-shaped divergent light to be emitted toward the inside from optical fibers disposed on the same circle, thereby making it possible to realize a Bessel beam generation device that emits a disk irradiation beam focused in the vicinity of the center. The foregoing allows a disk irradiation beam to be generated without a center portion where the amount of light is high, and without decreasing the amount of light.
Inventors:
OGAWA HIROSHI (JP)
Application Number:
PCT/JP2023/016779
Publication Date:
November 02, 2023
Filing Date:
April 27, 2023
Export Citation:
Assignee:
OGAWA HIROSHI (JP)
International Classes:
G01N21/17; G02B27/09; G02F1/01
Domestic Patent References:
| WO2019017392A1 | 2019-01-24 | |||
| WO2020228907A1 | 2020-11-19 |
Foreign References:
| JP2013521070A | 2013-06-10 | |||
| JP2017124055A | 2017-07-20 | |||
| JP2010207254A | 2010-09-24 | |||
| JP3479069B2 | 2003-12-15 | |||
| JP2022075374A | 2022-05-18 | |||
| JP2021501058A | 2021-01-14 |
Attorney, Agent or Firm:
YOSHIDA Misako (JP)
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