Single- and multilayer kinoform elements for compact mid-infrared objectives

Грейсух Г.И., Антонов А.И., Ежов Е.Г. Одно- и многослойные киноформные элементы для компактных объективов среднего инфракрасного диапазона // Оптический журнал. 2019. Т. 86. № 6. С. 3–6. http://doi.org/10.17586/1023-5086-2019-86-06-03-06

Greysukh G.I., Antonov A.I., Ezhov E.G. Single- and multilayer kinoform elements for compact mid-infrared objectives [in Russian] // Opticheskii Zhurnal. 2019. V. 86. № 6. P. 3–6. http://doi.org/10.17586/1023-5086-2019-86-06-03-06

G. I. Greĭsukh, A. I. Antonov, and E. G. Ezhov, "Single- and multilayer kinoform elements for compact mid-infrared objectives," Journal of Optical Technology. 86(6), 327-330 (2019). https://doi.org/10.1364/JOT.86.000327

It is shown that the introduction of a kinoform element into the optical layout of a refractive triplet makes it possible to reduce both chromatic and monochromatic aberrations to an acceptable level, thereby obtaining a high-aperture infrared objective capable of forming an image with a high resolution over a fairly wide angular field. In this case, the diffraction efficiency of the kinoform element, predicted through rigorous diffraction theory, will not fall below 0.8 over the entire operating spectral range. The possibilities of increasing the diffraction efficiency to 0.9 or 0.95 owing to the use of two- or three-layer kinoform microstructures are demonstrated.