Miniaturized space laser communication terminal optical system and use method thereof

Abstract

The invention discloses a miniaturized space laser communication terminal optical system and a use method thereof. According to the optical system, a telescope unit and a relay light path unit are ingeniously arranged in a space with a coordinate system of XYZ, and a pitch axis and an azimuth axis which rotate in a two-dimensional mode are formed through three times of reflection of a telescope folding-axis mirror and a rotary table folding-axis mirror in the telescope unit and a relay folding-axis mirror of the relay light path unit. The telescope unit rotates around a pitch axis and an azimuth axis to achieve pointing and aiming of the optical system. In the spatial layout, the telescope unit is arranged above or below the relay light path unit, and all optical devices in the relay light path unit are distributed on the two sides of a light beam inlet by arranging a reflecting mirror and a spectroscope of the relay light path unit, so that the size of a relay light path is compressed, and therefore, the projection envelope of the relay light path on the XY plane is equivalent to the projection envelope of the telescope system, the envelope size of the whole system is reduced, and the miniaturization design is realized.

Description

technical field [0001] The invention relates to the field of space laser communication, in particular to a miniaturized space laser communication terminal optical system and a use method. Background technique [0002] Space laser communication terminals are installed on satellites and other aircraft to realize inter-satellite laser communication. The space laser communication terminal needs a two-dimensional rotating mechanism to realize space precision pointing, alignment and other functions. [0003] At present, the two-dimensional rotating optical system commonly used in space laser communication terminals has the following two methods: [0004] 1) Periscope type: the optical system is placed behind the two-dimensional rotating mechanism, and the two-dimensional shafting structure drives two mirrors to realize the pointing and aiming of the terminal. This form requires that the internal size of the shaft system be larger than the telescope aperture, and requires two lar...

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Problems solved by technology

[0006] In order to solve the problem that the two-dimensional rotating optical system of the existing space laser communication terminal has a complex structure and is not conducive to miniaturization, the present invention proposes a miniaturized space laser communication terminal optical system with a two-dimensional rotating axis

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