Title:
REFLECTIVE BROADBAND INTEGRATOR MIRROR AND BROADBAND OPTICAL FIBER LASER OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/236354
Kind Code:
A1
Abstract:
A reflective broadband integrator mirror (100) and a broadband optical fiber laser optical system (10). The reflective broadband integrator mirror (100) is based on incident light from a point light source (20) and comprises a base body (110), wherein the base body (110) has a bottom face (111), a mirror face (112) and a symmetry plane (113); and the base body (110) is symmetrical about the symmetry plane (113). The mirror face (112) is inclined at a set acute angle (α) relative to the bottom face (111), and comprises at least three broadband curved surfaces (1121), which are concave, wherein the broadband curved surfaces (1121) pass through the symmetry plane (113) and are symmetrical about the symmetry plane (113); and every two adjacent broadband curved surfaces (1121) intersect and form an arc-shaped strip line (1122), focuses of all the arc-shaped strip lines (1122) are coplanar and form a focusing plane, and the focusing plane and the symmetry plane (113) are set in parallel and at an interval. Reflected light rays that are reflected by the mirror face (112) are focused towards a center to form a light spot. Since a plurality of reflected light rays reflected by the same arc-shaped strip line (1122) are symmetrical about the symmetry plane (113), the light spot has relatively good symmetry; in addition, by means of unidirectional flat-top homogenization, the light spot has relatively good overall homogeneity. The present invention has a simple optical path structure, less power loss, higher optical path stability, lower costs, and relatively good large-scale application prospects.
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Inventors:
SHAO HUAJIANG (CN)
WANG WEI (CN)
LI SIJIA (CN)
WANG WEI (CN)
LI SIJIA (CN)
Application Number:
PCT/CN2022/114206
Publication Date:
December 14, 2023
Filing Date:
August 23, 2022
Export Citation:
Assignee:
SHANGHAI EMPOWER TECH CO LTD (CN)
International Classes:
G02B5/10; G02B27/09
Domestic Patent References:
| WO2018174322A1 | 2018-09-27 |
Foreign References:
| CN113485018A | 2021-10-08 | |||
| CN108427205A | 2018-08-21 | |||
| CN215449768U | 2022-01-07 | |||
| CN112114393A | 2020-12-22 | |||
| JPH07249561A | 1995-09-26 | |||
| JP2000305168A | 2000-11-02 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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