Selection of liquid parameters for chromaticity correction in liquid lenses

Voytov A.S., Egorenko M.P., Efremov V.S.

For Russian citation (Opticheskii Zhurnal):

Войтов А.С., Егоренко М.П., Ефремов В.С. Выбор параметров жидкостей для коррекции хроматизма в жидкостных объективах // Оптический журнал. 2025. Т. 92. № 4. С. 82–92. http://doi.org/10.17586/1023-5086-2025-92-04-82-92

Voytov A.S., Egorenko M.P., Efremov V.S. Selection of liquid parameters for chromaticity correction in liquid lenses [in Russian] // Opticheskii Zhurnal. 2025. V. 92. № 4. P. 82–92. http://doi.org/10.17586/1023-5086-2025-92-04-82-92

For citation (Journal of Optical Technology):

Abstract:

Subject of study. Liquid parameters of a liquid doublet lens with variable focal length. Aim of study. To establish the relationship between the Abbe dispersion coefficients (νD) and the refractive indices (nD) of liquids forming a liquid lens, providing an achromatic type of correction of the chromatic position (Δs′) of a liquid lens. Method. Computer simulation of liquid doublets with different values of nD and νD and assessment of their effect on the change in chromaticisms of position (Δs′) and magnification (Δy′). Main results. The requirements for the choice of a combination of optical liquids for which a higher nD value corresponds to a higher νD value and, accordingly, liquids with a lower nD value have a lower νD value are determined. The achromatic type of correction Δs′ is obtained with its values at two points equal to zero. The difference in the values of the dispersion coefficients of liquids should not exceed 10–15 units. The difference in the nD values of liquids should be the maximum to ensure a larger radius of curvature of the membrane, which reduces the monochromatic aberrations of the liquid doublet and allows to increase its relative aperture. Practical significance. The results of the study of the properties of the liquids forming the doublet make it possible to calculate liquid components with the achromatic type of correction Δs′ as independent lenses of telescopic systems, and as components of more complex optical devices.

Keywords:

liquid doublet lens, refractive index (nD), Abbe dispersion coefficient (νD), position chromaticism (Δs′), magnification chromaticism (Δy′)

OCIS codes: 160.3710, 230.3720, 120.3620, 120.4820, 220.3620, 220.4830, 100.2960, 100.2980, 110.2960, 110.3000

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