Dustproof film for lens surface of optical device

Abstract

The invention discloses a dustproof film for the surface of an optical device lens, and the dustproof film comprises a micro-texture layer which is disposed on the surface of the optical device lens through a chemical etching method, a particle erosion method or a laser etching method. The micro-texture layer is composed of a plurality of micro-texture units which are arranged on the surface of the lens of the optical device at intervals in a regular arrangement mode or a crossed and staggered arrangement mode. The micro-texture layer is coated with an anti-reflection wear-resistant layer or a composite coating through a vacuum coating method, a chemical vapor deposition method or a sol-gel method. According to the dustproof film, the light transmittance can be guaranteed while the function of preventing dust deposition is achieved, collision damage of microparticles to a certain degree is resisted, the durability is high, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of dust-proofing on the surface of optical devices, in particular to a dust-proof film for the surface of a lens of an optical device. Background technique [0002] As the only large-scale celestial body outside the near-Earth space, the moon is rich in various mineral resources and energy resources, and its development is of great economic value. Countries around the world have successively carried out lunar exploration activities, including releasing lunar surface probes to investigate, collect and analyze lunar surface samples It is the main means of lunar exploration at present. Optical devices, as an important part of lunar probes, play an important role in lunar surface inspection and collection activities. However, the environment on the lunar surface is complex, and lunar exploration activities face various severe tests. Dust effect, the particle size of lunar dust is mostly less than 100 μm, and the...

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Problems solved by technology

[0002] As the only large-scale celestial body outside the near-Earth space, the moon is rich in various mineral resources and energy resources, and its development is of great economic value. Countries around the world have successively carried out lunar exploration activities, including releasing lunar surface probes to investigate, collect and analyze lunar surface samples It is the main means of lunar exploration at present. Optical devices, as an important part of lunar probes, play an important role in lunar surface inspection and collection activities. However, the environment on the lunar surface is complex, and lunar exploration activities face various severe tests. Dust effect, the particle size of lunar dust is mostly less than 100 μm, and the diameter of suspended particles on the lunar surface is even less than 20 μm. The speed of the lunar rover is usually low when walking on the lunar surface. These tiny moon dust particles are very easy to collide with the surface of optical devices at low speed This will lead to the deposition of moon dust on the surface of optical devices, causing serious impacts. For example, the deposition of moon dust on the surface of photovoltaic cells will directly affect the concentration rate of the system and reduce the efficiency of solar photovoltaic power generation. The deposition of moon dust on the surface of optical lenses not only blocks the line of sight, but also Reduce the light transmittance and clarity, affect the imaging quality of the shooting, and even cause damage to the device, failure to use it normally, etc. Therefore, the dust-proof surface of the optical device is of great significance to the smooth progress of lunar exploration activities

[0003] Aiming at the problem of lunar dust deposition, various corresponding anti-dust technologies have been proposed to suppress or remove lunar dust adhesion, such as mechanical vibration dust removal method, jet dust removal method, electric curtain dust removal method and physical shielding, etc., but mechanical vibration dust removal method and jet dust removal method Both methods require additional devices, increase the weight of the detector, and require energy consumption, and the cleaning effect is not good, and the dust is easily re-deposited after dust removal; the electric curtain dust removal method has a better dust removal effect, but it needs to maintain continuous charging on the surface of the components. A large amount of power is consumed, and the energy loss is serious; most of the physical shielding technologies use a transparent dust cover to prevent dust from depositing on the surface of the optical device, but because the dust cover itself may also deposit dust, the dust prevention effect is not good; Inspired by the self-cleaning effect of animal and plant surfaces such as the back of desert beetles, butterfly wings, and rice leaves, surface microstructure technology has broad application prospects due to its simplicity, light weight, no energy consumption, and strong adaptability. To change the physical structure of the solid surface and achieve the purpose of self-cleaning, the commonly used methods for constructing the surface micro-morphology include template method, etching method, surface plasma treatment method, phase separation method, electrospinning method, etc. Experiments have proved that the micro-nano-scale array structure has a good dust-proof effect, but at the same time it will also affect the light transmittance, and the limitation of the preparation process technology makes the surface of the microstructure rough, facing the problem of reduced light transmittance and surface microstructure. Under the continuous impact of dust particles, rapid wear and tear, loss of self-cleaning ability, etc., low durability and poor environmental adaptability are the main problems in the application of surface microstructure technology to the surface dust prevention of optical devices

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