Large-caliber long-focus imaging optical system for spliced mirror experiment

Abstract

The invention provides a large-caliber long-focus imaging optical system for a spliced mirror experiment. The system comprises a convex reflector assembly, a front lens set used for correcting a spherical aberration generated by a concave mirror assembly and the convex reflector assembly, the concave reflector assembly and a rear lens set used for correcting the participant spherical aberration and color difference introduced by the front lens set; the two sides of the convex reflector assembly are both optical surfaces; the front surface of the concave reflector assembly is an optical surfaceand a concave surface; the rear surface of the concave reflector assembly is a non-optical surface; and the concave reflector assembly adopts a spliced structure. The system can have index system characteristics of large-caliber and long-focus astronomical telescopes; and all the optical surfaces are designed to be spherical surfaces, so that the manufacturing difficulty is lowered to the maximumdegree, the imaging quality is high, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the field of optical lens and optical design, in particular to a large-aperture long-focus imaging optical system for splicing mirror experiments. Background technique [0002] With the continuous development of optical engineering technology, the demand for telescope resolution and light collection ability in astronomical observation continues to rise. According to the principle of optics, only by continuously increasing the aperture of the telescope can we meet the demand for observing distant and faint celestial bodies. [0003] Traditional integral primary mirror telescopes (such as the "Hubble" space telescope) are limited by factors such as optical manufacturing capabilities, and there is no room for further improvement in their calibers. At present, the whole world is making every effort to develop space-based / ground-based telescopes with spliced ​​primary mirrors, such as the James Webb Space Telescope (JWST) with a dia...

AI Technical Summary

Problems solved by technology

However, in the spliced ​​primary mirror, the high-precision confocal and common phase between the sub-mirrors have always been the key issues restricting the development of the spliced ​​primary mirror telescope.

[0005] Common total reflection astronomical telescopes mostly adopt Cassegrain structure or R-C structure. Both of these common structures have aspheric mirrors. The processing cost is relatively high, which is not conducive to cost control.

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