Use of a diffractive element to control pupil aberrations in a DFOV telescope

Marta C. De La Fuente

doi:10.1117/12.222824

5 October 1995 Use of a diffractive element to control pupil aberrations in a DFOV telescope

Marta C. De La Fuente

Proceedings Volume 2539, Zoom Lenses; (1995) https://doi.org/10.1117/12.222824
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The need of coma at the exit pupil of a telescope for a scanning IR camera is well known. However, in some cases it is impossible to introduce the required pupil coma if there are not enough degrees of freedom. This paper describes the use of a binary surface in a DFOV telescope so that pupil aberrations are properly controlled. The design has been performed on an already existing telescope, maintaining design philosophy. Several positions of the surface are considered. Comparison among all possible configurations is evaluated in terms of image and radiometric quality as well as weight and cost savings. The effect of the binary surface on the system performance over the operative temperature range is also studied.

Citation Download Citation

Marta C. De La Fuente "Use of a diffractive element to control pupil aberrations in a DFOV telescope", Proc. SPIE 2539, Zoom Lenses, (5 October 1995); https://doi.org/10.1117/12.222824

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