Light concentrating multipurpose satellite system with adjustable power density

Abstract

The invention discloses a light concentrating multipurpose satellite system with adjustable power density. The light concentrating multipurpose satellite system comprises a spacecraft platform, an optical system, an optical path adjusting mechanism and a direction control mechanism, wherein the optical system comprises a main collecting lens, an auxiliary collecting lens and a plane mirror; the auxiliary collecting lens is located at the back of the main collecting lens and is overlapped with an optical axis; the normal distance between the main collecting lens and the auxiliary collecting lens is adjusted by the optical path adjusting mechanism, and the power density of output light beams is changed; the angle of the plane mirror is adjusted by the direction control mechanism, and the light beams which are reflected by the plane mirror aim at a target; sunlight is subjected to transmission by the main collecting lens to be concentrated to the auxiliary collecting lens, the light beams are concentrated by the auxiliary collecting lens and then are reflected to the plane mirror, and the light beams are reflected to the target by the plane mirror.

Description

technical field [0001] The invention relates to the application field of space optics, in particular to a light-gathering system of a flexible Fresnel lens with adjustable power density and a multipurpose satellite system formed thereof. Background technique [0002] Solar energy is an inexhaustible green energy. At present, the utilization of solar energy mainly includes ground solar power generation and heating. However, because the solar energy reaching the ground is unstable and the radiation intensity is small, the use of solar energy in outer space has aroused increasing interest from scientists all over the world, so many scientists and scholars have proposed the use of solar energy in space to transmit to the ground for power generation. concept. [0003] The number of space debris above the earth is increasing day by day, which poses a great threat to space activities. The research on space debris removal technology has become an important field of research in the ...

AI Technical Summary

Problems solved by technology

The debris collection device requires a huge area and can be deployed in orbit, and it takes a lot of time to remove debris, and its service life is short, so it is not suitable for long-term and effective space debris removal

In addition, these space debris removal measures also rely on technologies such as high-power lasers, controlled propulsion, orbital rendezvous, and stable capture. The cost is high, the workload is heavy, and some even have the danger of colliding with debris. Therefore, a new type of space debris is required. Debris cleaning technology, safe, low-cost, and efficient completion of cleaning tasks

[0004] The invention patent "Spin-stabilized thin-film reflector and its application in space" (Patent No. CN1341536A) discloses a spin-stabilized thin-film reflector in space. The spacecraft conducts power generation and heating, and relies on spin stabilization to maintain its attitude and orbit. This invention cannot realize the long-distance output and utilization of light energy, and stays in the in-situ utilization function of solar energy. In addition, its thin-film reflector surface is fixed and cannot Changing the power density, the use of solar energy is not controllable

Because there is no device in the system to adjust the relative position of the mirror of the concentrating system, once the system is developed, the power density of the beam cannot be adjusted according to the needs, resulting in a relatively single function

In addition, the concentrator of this method is always in the state of high-energy beam irradiation, without dormancy and protection strategies. With the current level of optical design and processing technology and material characteristics, its life is extremely short

If it is applied to space satellites, its optical lens reflector is developed using traditional Fresnel lenses. To achieve the purpose of uniform light collection, the processing technology of the opposite type is extremely high; High launch costs, making it difficult to use in the space domain

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