Method for increasing the depth of field of images of flat transparencies reconstructed using synthesized holograms

Koreshev, S.N., Smorodinov, D.S., Frolova, М.А.

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For Russian citation (Opticheskii Zhurnal):

Корешев С.Н., Смородинов Д.С., Фролова М.А. Метод увеличения глубины резкости изображений плоских транспарантов, восстановленных с помощью синтезированных голограмм // Оптический журнал. 2018. Т. 85. № 11. С. 50–57. http://doi.org/10.17586/1023-5086-2018-85-11-50-57

Koreshev S.N., Smorodinov D.S., Frolova M.A. Method for increasing the depth of field of images of flat transparencies reconstructed using synthesized holograms [in Russian] // Opticheskii Zhurnal. 2018. V. 85. № 11. P. 50–57. http://doi.org/10.17586/1023-5086-2018-85-11-50-57

For citation (Journal of Optical Technology):

S. N. Koreshev, D. S. Smorodinov, and M. A. Frolova, "Method for increasing the depth of field of images of flat transparencies reconstructed using synthesized holograms," Journal of Optical Technology. 85(11), 696-702 (2018). https://doi.org/10.1364/JOT.85.000696

Abstract:

The influence of the parameters used in synthesizing hologram projectors on the distribution of complex amplitude in the planes of hologram synthesis and the reconstructed image is considered. A method for increasing the depth of field of the reconstructed images is proposed and investigated. This method is based on the representation of the object wave in the synthesis of a hologram in the form of a superposition of object waves emanating from two identical objects, which are located at different distances from the plane of the hologram synthesis. The work involved mathematical modeling of the processes of synthesis and reconstruction of a hologram for the synthesis of the hologram projectors of two-dimensional binary objects for photolithography.

Keywords:

depth of field, phase difference, phase matching, hologram synthesis, increasing the depth of field, photolithography

Acknowledgements:

The research was supported by the Ministry of Education and Science of the Russian Federation (Minobrnauka) (3.2506.2017/4.6).

OCIS codes: 090.0090

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