A Miniaturized Space Laser Communication Terminal Optical System and Using Method

An optical system and laser communication technology, applied in optics, optical components, transmission systems, etc., can solve the problems of complex structure and unfavorable miniaturization of a two-dimensional rotating optical system, and reduce assembly complexity, facilitate miniaturization, envelope small effect

CN113612534BActive Publication Date: 2022-05-20XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-05-20

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Abstract

The invention discloses a miniaturized space laser communication terminal optical system and a using method. The optical system cleverly arranges the telescope unit and the relay optical path unit in the space where the coordinate system is XYZ, and utilizes the functions of the telescope folding mirror in the telescope unit, the turntable folding mirror, and the relay folding mirror of the relay optical path unit. The three reflections constitute the two-dimensionally rotating pitch axis and azimuth axis, and the telescope unit realizes the pointing and aiming of the optical system by rotating around the pitch axis and the azimuth axis. In terms of spatial layout, the telescope unit is arranged above or below the relay optical path unit. By arranging the reflectors and beam splitters of the relay optical path unit, the optical devices in the relay optical path unit are distributed on both sides of the beam entrance, thereby compressing The size of the relay optical path is reduced, so that the projection envelope of the relay optical path on the XY plane is equivalent to that of the telephoto system, reducing the envelope size of the entire system and realizing a miniaturized design.
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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...

Examples

Embodiment

[0048] Such as figure 1 As shown, this embodiment provides a specific structure of a miniaturized space laser communication terminal optical system, including a telescope unit 10 and a relay optical path unit 20; the system constructs a pitch axis Z1 and an azimuth axis Z2;

[0049] Such as figure 2 Shown is the telescope unit 10 provided by this embodiment. The telescope unit 10 includes a telescopic objective lens 11, an eyepiece 12, and a turntable folding axis mirror 13; the telescopic objective lens 11 and the eyepiece 12 are confocally arranged, and the confocal focal plane is marked as S1;

[0050]The telescopic objective lens comprises a main reflector 111, a secondary reflector 112, and a telescope folding mirror 113; the secondary reflector 112 is located on the reflected light path of the primary reflector 111, and the telescopic folded axis mirror 113 is located on the reflected light path of the secondary reflector 112; The main reflector 111 is an even-order as...