Large-view-field compact catadioptric telescope optical system with clamping type focus

Abstract

The invention discloses a large-view-field compact catadioptric telescope optical system with a clamping type focus. The large-view-field compact catadioptric telescope optical system comprises a spherical aberration correction lens group, a spherical primary mirror with a hole in the center, a spherical secondary mirror, a view field aberration correction lens group and a focal plane at the position of the clamping type focus, wherein the spherical aberration correction lens group is located at the entrance pupil position of the system, the central area, close to the convex surface of the spherical primary mirror, of the spherical aberration correction lens group is plated with a reflecting film, the edge annular belt is plated with an antireflection film, the area is the position of the spherical secondary mirror, and the spherical aberration correction lens group and the spherical secondary mirror share one optical element; the field aberration correction lens group is positioned on the back surface of the spherical primary mirror and in front of the focal plane; the focal plane of the optical system is located at the clamping type focal point. The optical system has the characteristics of small size, fast focal ratio, large field of view, wide wave band and convenience in installation and maintenance of the terminal detector, and can greatly improve the observation capability and detection efficiency of the telescope.

Description

technical field [0001] The invention relates to an optical optical system in the field of space exploration, in particular to a compact catadioptric telescope optical system with a card-type focal point and a large field of view. Background technique [0002] A space astronomical telescope refers to a type of space optical payload mounted on a satellite platform for imaging and measuring cosmic celestial bodies. In order to obtain high-resolution star images, ground-based telescopes are gradually developing towards large apertures and large fields of view. However, to build and start a satellite system in space, if the size of the space telescope is large, the mass and volume of the satellite system will be too large, which not only increases the difficulty of carrying the telescope into space, but also greatly increases the cost of satellite launch. Therefore, lightweight space telescopes with small size, high flexibility and high resolution in new structural forms have be...

AI Technical Summary

Problems solved by technology

However, to build and start a satellite system in space, if the size of the space telescope is large, the mass and volume of the satellite system will be too large, which not only increases the difficulty of carrying the telescope into space, but also greatly increases the cost of satellite launch

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