Abstract
Based on our self-proposed laser differential confocal focusing method, we propose a high precision focal-length measurement and develop measurement instruments. Experiments and analyses indicate the measurement uncertainty is prior to 0.01% from 12000mm to 50000mm.
| Original language | English |
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| Article number | JT5A.33 |
| Journal | Optics InfoBase Conference Papers |
| Publication status | Published - 2015 |
| Event | Computational Optical Sensing and Imaging, COSI 2015 - Arlington, United States Duration: 7 Jun 2015 → 11 Jun 2015 |