I.A. Bogolyubov1, Yu.V. Bazhanov2, V.N. Mokshanov3

1-3 JSC «Precision Systems and Instruments» (Moscow, Russia)

A projection lens for a large-sized IR radiometer is considered. An aberration analysis of a projection lens consisting of two components at a finite distance is carried out. The peculiarity of the analysis is the requirement of the telecentric course of the main beams and the alignment of the angles of the extreme beam to achieve minimal vignetting when switching the lens with the mirror part.

The optical system of the projection lens was built on the basis of aplanatic components with aspherical surfaces, which made it possible to synthesize a system of two lenses. As a result of the synthesis, a projection lens was obtained that provides good image quality and commutation with a receiving telescope.

Bogolyubov I.A., Bazhanov Y.V., Mokshanov V.N. Main telescope projection system for IR radiometer. Radiotekhnika. 2023. V. 87.
№ 4. P. 21−31. DOI: https://doi.org/10.18127/j00338486-202304-04 (In Russian)

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