CN102269865B - Dustproof frost-proof optical telescope system in direct contact with atmosphere - Google Patents
Dustproof frost-proof optical telescope system in direct contact with atmosphere Download PDFInfo
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- CN102269865B CN102269865B CN 201110201302 CN201110201302A CN102269865B CN 102269865 B CN102269865 B CN 102269865B CN 201110201302 CN201110201302 CN 201110201302 CN 201110201302 A CN201110201302 A CN 201110201302A CN 102269865 B CN102269865 B CN 102269865B
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Abstract
The invention discloses a dustproof frost-proof optical telescope system in direct contact with atmosphere. The telescope system comprises a telescope, annular ion tuyeres, a high-pressure generator and a cleaning drying device; the annular ion tuyeres are respectively arranged in a plurality of symmetric directions above a barrel of the telescope, the high-pressure generator is connected with the annular ion tuyeres, the high-pressure airflow passing through the annular ion tuyeres is ionized through the high-pressure generator to generate a large amount of positive and negative ions which are rapidly blown to the telescope together with the airflow along the barrel wall of the telescope, the positive and negative ions are close to an arc surface of the telescope and concentrated on the centre of the telescope to finally form uniform and steady upward airflow; the dry and clean air generated by the cleaning drying device is used as ionization air of the annular ion tuyeres. The telescope can work directly in the air; therefore, the detection efficiency of the telescope is improved, weak vibration is resisted, and the adaptability of the optical laser radar in a special weather condition is improved.
Description
Technical field
The present invention relates to the dustproof frost prevention optical telescope system of a kind of optical telescope system, particularly a kind of direct contact atmosphere, be mainly used in laser and remote sensing field.
Background technology
Laser radar is the radar system with characteristic quantities such as the position of the Emission Lasers bundle detection of a target, speed, it is to target emission detection signal (laser beam), the signal (target echo) that reflects from target that then will receive compares with transmitting, after suitable processing, just can obtain target for information about, such as target range, orientation, highly, the parameter such as speed, attitude even shape.
Optical telescope is mainly used in receiving the echoed signal that the laser radar Emission Lasers is returned by the object scattering, and focuses in the receiving optics, so the telescope bore is larger, and the echoed signal that receives is more, and energy is stronger, more is conducive to signal analysis.And the energy of laser radar Emission Lasers also is and there is certain relation in telescopical caliber size: Emission Lasers energy hour can strengthen echoed signal by increasing the telescope bore; Telescope bore hour can strengthen echoed signal by the energy that increases Emission Lasers.The laser radar optical telescope has just become the key factor of laser radar design, and the optical telescope system has the characteristic of heavy caliber, light weight, high wavefront quality.Usually laser radar needs round-the-clock observation, change with the seasonal real-time of measuring detected object, optical telescope is used for receiving the atmospheric backscatter signal as the part of laser radar like this, directly contact with atmosphere for a long time, the intrasystem telescope of optical telescope surface is deposition dust, frost and dew easily.
In order to guarantee the receiving efficiency of optical telescope system, guarantee that cleaning, the drying on optical telescope surface also become matter of utmost importance.The existing method that usually adopts is to install an optical protection eyeglass additional on the telescope surface, and the optical telescope system is placed on the place that ventilates and lack dirt, can clean telescope by the surface of cleaning optics protection glass like this.The bore of optical protection eyeglass is identical with the bore of optical telescope, its machining precision is suitable with the optical telescope surface, particularly for coherent laser radar, usually need to reach nano level operation wavelength.
The method that installs protection glass additional that adopts at present has the defective of the following aspects: the first, because the requirement of optical protection eyeglass is also very high, this will double the manufacturing cost of whole laser radar system.The second, for bigbore optical telescope, primary mirror can undeformedly be installed, but the optical protection eyeglass need to be installed in telescopical bung, is difficult to controller deformation to the impact of wavefront, thereby affects the receiving efficiency of optical telescope.The 3rd, the optical telescope bore is larger, and optical protection eyeglass bore is larger, quality is larger, and not only dismounting is inconvenient, cleans also inconvenience, and dust granule can be mixed between cleaning piece and the optical surface in cleaning process, causes easily scuffing.The 4th, in the time of frosty weather or morning, the protection glass surface forms frost or the dew that condenses easily, and the solvend among the water droplet meeting dissolved dirt, make and form " salt bridge " between dust granules and the glass surface, increase the dedusting difficulty, and water itself also may be dissolved with a small amount of objectionable impurities, glass surface is caused slight erosion.The 5th, even protection glass is installed, also differing guarantees that surely the telescope surface does not have dust.
Telescope inevitably pollutes and surely belongs to dust, and the dust particle that suspends in the air is the particle with electric charge, and it will react to its any electrostatic field that runs into.Because the telescope surface long term is exposed in the air, produce static with gas friction in the air, the telescope powered surfaces that charged dust is had an opposed polarity is adsorbed.If dust or telescope surface among the two one be insulator, dust will can not be neutralized and will be adsorbed in the telescope surface when collision.Therefore we adopt the method for electrostatic precipitation, first in and the electric charge of dust particle, make the telescope surface no longer include suction-operated to it, air-flow blows out dust particle again.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, a kind of dustproof frost prevention optical telescope system of direct contact atmosphere is provided, this system can make telescope be directly exposed in the air and work, improve telescopical detection efficiency, and can resist faint vibration, improve the adaptive faculty of optical lasers radar under the special climate condition.
Technical solution of the present invention: a kind of dustproof frost prevention optical telescope system of direct contact atmosphere comprises: telescope air compressor, gas-holder, filtrator, cooling driers, high pressure generator, annular ion tuyere; Several symmetry directions above telescopical bucket are installed respectively annular ion wind mouth, will be through the high pressure draught ionization of annular ion tuyere by high pressure generator, produce a large amount of negative ions and blow to rapidly telescope with air-flow along telescopical bucket wall, press close to the telescope curved surfaces, and the concentrated mirror far away center that is visible, even, the stable air-flow upwards of final formation, the electrostatic charge that in this process, has neutralized and accumulated on the telescope, the high-speed ion air-flow that makes progress simultaneously blows out the grit of electrostatic attraction, and stops it again to attract dust particle; The gas of the clean dried that the high pressure draught of annular ion tuyere output must be high compression, otherwise can produce secondary pollution to the telescope surface, the dried clean air that is produced by the clean dried device is as the ionized gas of annular ion tuyere.
Described clean dried device comprises air compressor, gas-holder, filtrator, cooling driers; All adopt gas outlet to connect between air compressor, gas-holder, primary filter, cooling driers, multistage filter and the annular ion tuyere, be used for the flow direction of control air-flow; The gas outlet that connects between gas-holder and the annular particle tuyere is provided with the first valve, be provided with the second valve between gas-holder and the filtrator, be provided with the 3rd valve between filtrator and the annular ion tuyere, close under normal circumstances the first valve, gas passes through each device successively, when gas is very dried when clean, directly opens the first valve, close the second valve and the 3rd valve, directly gas-holder is connected annular ion wind mouth.
The present invention's principle: several symmetry directions above the telescope bucket are installed respectively the ion tuyere, the installation site as shown in Figure 3, will be through the high pressure draught ionization of ion tuyere by high pressure generator, produce a large amount of negative ions and blow to rapidly telescope with air-flow along telescope bucket wall, press close to the telescope curved surfaces, and concentrate the mirror far away center that is visible, finally form evenly, stablize air-flow upwards, as described in Figure 4 ion wind airflow direction.The electrostatic charge that in this process, has neutralized and accumulated on the telescope, the high-speed ion air-flow that makes progress simultaneously blows out the grit of electrostatic attraction, and stop it again to attract dust particle, the gas of the clean dried that the high pressure draught of ion tuyere output must be high compression, otherwise can produce secondary pollution to the telescope surface, provide pressurized air by air compressor, then the high compression gas of having exported need to carry out steadily, filter and dry the processing, pass through successively gas-holder, primary filter, cooling driers, multistage filter, the dried clean air of output just can be used as the ionized gas of ion tuyere at last.Adopt air compressor to have the advantages that oleaginousness is less, leakage is little, in order to be applicable to the mobile lidar system, also need during design to select have vibration impact little, that be subjected to vehicular platform little air compressor; In order to prevent that autumn and winter season outwork frost from the impact of system, can arrange the air outlet temperature of cooling driers as required.
The present invention's advantage compared with prior art is:
(1) the present invention has removed the telescopical optical protection eyeglass of traditional optical, telescope is directly exposed in the air works, improve telescopical detection efficiency, and can resist faint vibration, improve the adaptive faculty of optical lasers radar under the special climate condition.
(2) the optical telescope system of the present invention's design directly is exposed to telescope in the atmosphere, has eliminated the impact of optical protection eyeglass on light wave, thereby has improved telescopical receiving efficiency.
(3) the present invention utilizes the electrostatic precipitation principle, need not directly to contact with telescope, avoids the telescope injury.
(4) the present invention has set the temperature of ion wind, avoids because temperature variation impacts the telescope optical property, and prevents condensing of telescope surface frost and dew.
(5) device of the present invention is all installed simple and easyly, easy to operate, has saved manufacturing cost, and has that shock resistance is good, stable, the characteristics of compact conformation, can be used for ground, vehicle-mounted, airborne laser radar system.
Description of drawings
Fig. 1 is that structure of the present invention forms synoptic diagram;
Fig. 2 is structure connection diagram of the present invention;
Fig. 3 is annular ion tuyere front elevation of the present invention and vertical view;
Fig. 4 is airflow direction synoptic diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes telescope 13, annular ion tuyere 9, high pressure generator 10 and clean dried device.Several symmetry directions above the bucket of telescope 13 are installed respectively annular ion wind mouth 9, high pressure generator 10 is connected with annular ion tuyere 9, will be through the high pressure draught ionization of annular ion tuyere 9 by high pressure generator 10, produce a large amount of negative ions and blow to rapidly telescope 13 with air-flow along telescopical bucket wall, press close to telescope 13 curved surfaces, and concentrate mirror far away 13 centers that are visible, finally form evenly, stablize air-flow upwards.The dried clean air that the clean dried device produces is as the ionized gas of annular ion tuyere.
As shown in Figure 2, the clean dried device of the embodiment of the invention comprises the first air compressor 1, the second air compressor 2, gas-holder 3, primary filter 5, cooling-water machine 6, the second filtrator 7, the 3rd filtrator 8; Gas outlet connects the first air compressor 1, the second air compressor 2, gas-holder 3, primary filter 5, cooling-water machine 6, the second filtrator 7, the 3rd filtrator 8, annular ion tuyere 9 successively, is used for controlling under special circumstances the flow direction of air-flow.The gas outlet that connects between gas-holder 3 and the annular particle tuyere 9 is provided with the first valve 4, be provided with the second valve 11 between gas-holder 3 and the primary filter 5, be provided with the 3rd valve 12 between third level filtrator 8 and the annular ion tuyere, close under normal circumstances the first valve 4, gas passes through above-mentioned each device successively, when gas very dried when clean, directly open the first valve 4, close the second valve 11 and the 3rd valve 12, directly gas-holder 3 is connected annular ion wind mouth 9, annular ion tuyere 9 places on the telescope bung, its connected mode as shown in Figure 3, type and the quantity of can compressed-air actuated degree as required coming the setting air compressor, can set according to air quality the sum of series number (present embodiment adopts three grades) of filtrator, can set the cooling driers air outlet temperature according to the telescopic system surrounding enviroment, also can determine according to the ionic activity of telescope size and annular ion tuyere 9 number (among the figure being 10) of annular ion tuyere, so far the dustproof frost prevention optical telescope system made of whole direct contact atmosphere.
Claims (2)
1. the direct dustproof frost prevention optical telescope system of contact atmosphere is characterized in that comprising: telescope, annular ion tuyere, high pressure generator and clean dried device; Several symmetry directions above telescopical bucket are installed respectively annular ion wind mouth, high pressure generator is connected with annular ion tuyere, will be through the high pressure draught ionization of annular ion tuyere by high pressure generator, produce a large amount of negative ions and blow to rapidly telescope with air-flow along telescopical bucket wall, press close to the telescope curved surfaces, and concentrate the mirror far away center that is visible, finally form evenly, stablize air-flow upwards; The dried clean air that described clean dried device produces is as the ionized gas of annular ion tuyere.
2. the dustproof frost prevention optical telescope system of direct contact atmosphere according to claim 1, it is characterized in that: described clean dried device comprises air compressor, gas-holder, primary filter, multistage filter, cooling driers; All adopt gas outlet to connect between air compressor, gas-holder, primary filter, cooling driers, multistage filter and the annular ion tuyere that connects successively, be used for the flow direction of control air-flow; The gas outlet that connects between gas-holder and the annular ion tuyere is provided with the first valve, be provided with the second valve between gas-holder and the primary filter, be provided with the 3rd valve between afterbody filtrator in the multistage filter and the annular ion tuyere, close under normal circumstances the first valve, gas passes through each device successively, when gas is very dried when clean, directly opens the first valve, close the second valve and the 3rd valve, directly gas-holder is connected annular ion wind mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110201302 CN102269865B (en) | 2011-07-19 | 2011-07-19 | Dustproof frost-proof optical telescope system in direct contact with atmosphere |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110201302 CN102269865B (en) | 2011-07-19 | 2011-07-19 | Dustproof frost-proof optical telescope system in direct contact with atmosphere |
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| CN102269865A CN102269865A (en) | 2011-12-07 |
| CN102269865B true CN102269865B (en) | 2013-01-09 |
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| CN 201110201302 Expired - Fee Related CN102269865B (en) | 2011-07-19 | 2011-07-19 | Dustproof frost-proof optical telescope system in direct contact with atmosphere |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103598948A (en) * | 2013-10-29 | 2014-02-26 | 余贞勇 | Wind screen type protective eyewear |
| CN104991294B (en) * | 2015-06-18 | 2017-04-12 | 中国科学院国家天文台南京天文光学技术研究所 | Extremely-low temperature environment large-aperture reflecting-type telescope frost-prevention film system and preparing method thereof |
| JP6848461B2 (en) * | 2017-01-18 | 2021-03-24 | 株式会社デンソーウェーブ | Laser radar device |
| CN109622229B (en) * | 2018-12-26 | 2023-07-04 | 武汉万集信息技术有限公司 | Laser radar dust collector and laser radar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641377A (en) * | 2004-01-06 | 2005-07-20 | 中国海洋大学 | Incoherent laser windfinding method and laser radar |
| CN1967284A (en) * | 2006-09-14 | 2007-05-23 | 中国科学院安徽光学精密机械研究所 | Lidar transmission-type double focal length optical transceiver system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3312925B2 (en) * | 1992-05-11 | 2002-08-12 | シチズン時計株式会社 | Anti-reflection coating |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1641377A (en) * | 2004-01-06 | 2005-07-20 | 中国海洋大学 | Incoherent laser windfinding method and laser radar |
| CN1967284A (en) * | 2006-09-14 | 2007-05-23 | 中国科学院安徽光学精密机械研究所 | Lidar transmission-type double focal length optical transceiver system |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平5-311395A 1993.11.22 |
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