2020 Fiscal Year Final Research Report
Precision angle measurement by conversion from time to angle based on autocollimation
| Project/Area Number |
19K14857
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 18020:Manufacturing and production engineering-related
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | 半導体レーザー / 角度計測 |
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| Outline of Final Research Achievements |
In this study, we propose a new autocollimation method that breaks the trade-off between resolution and measurement range. The unique point of this research is that it is an interdisciplinary development by combining the autocollimation method, which is an angle precision measurement method cultivated in the field of precision measurement, and the wavelength tunable laser technology, which has rarely been used in this field. For this purpose, we developed a current-modulated semiconductor laser system, a spectroscopic system, and an angle sensor system to extend the existing angle sensor called an autocollimator and create a new detection principle.
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| Free Research Field |
光工学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究の意義は第一に，精密計測分野ではほとんど用いられていない波長掃引型のレーザーを用いて，角度計測における分解能と測定範囲のトレードオフ関係を破る新しい原理を創出したことにある．これにより，測定範囲の制限を波長掃引レーザーで打ち破ることができることを示した．さらに，波長掃引型のレーザーの用途を示したことで，精密計測学分野界隈での光学計測法の裾野を広げたことが波及効果として考えられ，この点については今後の発展を期待し，社会的意義として位置付ける．
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