Research on Focal Length Measurement Scheme of Self-Collimating Optical Instrument Based on Double Grating
In this paper, we propose a scheme for measuring the focal length of a collimating optical instrument. First, a mathematical model for measuring the focal length of a collimator with double gratings is derived based on the moiré fringe formula and the principles of geometric optics. Mathematical sim...
Main Authors: | Wenchang Yang, Zhiqian Wang, Chengwu Shen, Yusheng Liu, Shaojin Liu, Qinwen Li, Wen Du, Zhuoda Song |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-05-01
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Series: | Sensors |
Subjects: | |
Online Access: | https://www.mdpi.com/1424-8220/20/9/2718 |
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