Method for estimating waveband of achromatic systems

Qiyuan Zhang; Haoyu Wang; Sen Han

doi:10.1117/12.2591139

28 February 2021 Method for estimating waveband of achromatic systems

Qiyuan Zhang, Haoyu Wang, Sen Han

Proceedings Volume 11781, 4th Optics Young Scientist Summit (OYSS 2020); 1178118 (2021) https://doi.org/10.1117/12.2591139
Event: Optics Frontier: Optics Young Scientist Summit, 2020, Ningbo, China

Abstract

Achromatic systems are the most common type of optical systems. At present, the selection of the designed wavelength band of the achromatic systems is mainly determined by the reception range of the human eyes or the detectors, or by previous experience. In this paper, a more accurate method to determine the designed waveband range of achromatic system is proposed. Firstly, the characteristics of the longitudinal chromatic aberration curve of the achromatic system is analyzed. Secondly, establishing the depth of focus(DOF) and wavelength relationship. The DOF is proportional to the wavelength and the square of working F#. Then, a working position is selected and the defocus amount between the working position and the focal position of each wavelength is calculated. Finally, the maximum allowable waveband range is determined by comparing the defocus amount of each wavelength at the working position with 2 times DOF. The method can be used to analyze the design waveband range of achromatic system, which is valuable for designing and testing of optical systems.

Citation Download Citation

Qiyuan Zhang, Haoyu Wang, and Sen Han "Method for estimating waveband of achromatic systems", Proc. SPIE 11781, 4th Optics Young Scientist Summit (OYSS 2020), 1178118 (28 February 2021); https://doi.org/10.1117/12.2591139

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