CN103499848A - Laser micro thruster optical system and installation method thereof - Google Patents
Laser micro thruster optical system and installation method thereof Download PDFInfo
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Abstract
The invention belongs to the field of optics, and particularly relates to an optical system of a laser micro thruster and an installation method thereof, which are mainly used for developing the laser micro thruster in an attitude adjustment system of a space micro satellite. The laser micro thruster optical system comprises a semiconductor laser, a diffraction element high-order aspheric surface micro lens array and a target zone, wherein the semiconductor laser is arranged in the laser micro thruster; laser of the semiconductor laser forms a laser target surface through convergence of the high-order aspheric micro lens array of the diffraction element, the laser target surface is adjusted to coincide with a target zone during installation, and then the target zone is ablated to generate strong thrust. The invention has the advantages of volume, light weight, good focusing effect, simple debugging method, low energy consumption and the like.
Description
Technical field
The invention belongs to optical field, be specifically related to a kind of laser microthruster optical system and installation method thereof, be mainly used in the development of laser microthruster in space flight microsatellite attitude adjustment System.
Background technology
Laser microthruster is a kind of novel micro-propulsion system, and the position that is mainly used in minitype spacecraft keeps, attitude is controlled, gravitation compensates and orbit adjusting.The laser microthruster optical system of this paper research is mainly used in the integer of superlaser is focused on.Laser microthruster optical system structure in the past is complicated, bulky, can't meet miniaturization, the low-power consumption demand for development of space flight microsatellite.Therefore, need a kind of miniaturization of research, light-weighted optical system, to meet the manufacture claim of microsatellite.
At present, the key of laser microthruster model machine performance concentrates on 2 points: improve the power density of hot spot and improve the target performance, therefore, this just requires the laser microthruster optical system should have good focusing performance.Thrust technical optics system for aerospacecraft mainly contains two kinds, the first: by the parabolic type condenser, realize the Laser Focusing ablation; The second: the hot spot of realizing laser instrument by the poly-lens group focuses on ablation.Although above-mentioned two kinds of methods are widely used in Practical Project, still have a lot of defects.Although the thrust of first method its generation for aerospacecraft is very strong, simple in structure, be easy to realize, but for space flight Microstar, at first require the physical dimension of microthruster little, yet adopt this method will make its physical dimension strengthen, can't meet Microstar's global design miniaturization, light-weighted requirement.Second method, though in a lot of Microstars, come into operation successively, not only light path is complicated, debugging is also difficult in the application of many mirrors group, and focusing effect is not good all the time, causes system energy efficiency to reduce.In order to meet final use, can only improve total power input, thereby the total power consumption of system is increased, will greatly reduce like this serviceable life in-orbit of Microstar.Therefore, above-mentioned two kinds of methods are badly in need of further improving.
In sum, the research of considering this problem is for the gordian technique to space flight microsatellite development, and the research of this technology success will indicate that domestic space flight Microstar microthrust technology enters a new step.Therefore, carry out the research of laser microthruster optical system, will play the promotion effect to the development of China's space satellite cause.
Summary of the invention
In order to solve the problem in background technology, the invention provides a kind of miniaturization, lightweight and focusing effect are good, adjustment method is simple, energy consumption is little a kind of laser microthruster optical system and installation method thereof.
Concrete technical scheme of the present invention is:
A kind of laser microthruster optical system, comprise the semiconductor laser, diffraction element high order aspheric surface microlens array and the target band that are arranged on laser microthruster inside;
Described diffraction element high order aspheric surface microlens array is arranged between semiconductor laser emergent ray and target band incident light; Described semiconductor laser emergent ray converges and forms the laser target surface by diffraction element high order aspheric surface microlens array; Described laser target surface and target band coincide;
Described target band produces ablation under the effect of laser pass line; Described target band adopts black ink paper or double-base powder to make.
Laser microthruster optical system based on above-mentioned now provides the installation method of this optical system, it is characterized in that, comprises the following steps:
Step 1] diffraction element high order aspheric surface microlens array is to be connected to form by a plurality of diffraction element aspherical microlens, the Connection Step of this diffraction element high order aspheric surface microlens array is:
Step 1.1) two dimension that first diffraction element high order aspheric surface lenticule is placed into to composite instrument is adjusted on platform, find the position of first diffraction element high order aspheric surface lenticule placement by the microscopic system of composite instrument, and this position is recorded as to initial position;
Step 1.2) adjust the movement of platform by two dimension, first diffraction element high order aspheric surface lenticule is migrated out to the field of view center of microscopic system, then second diffraction element high order aspheric surface lenticule is placed into to two dimension and adjusts on platform, and first diffraction element high order aspheric surface lenticule and second diffraction element high order aspheric surface lenticule are coupled together;
Step 1.3) observe second lenticular attitude of diffraction element high order aspheric surface by the imaging that is arranged on the monitor on composite instrument, and adjust second lenticular attitude of diffraction element high order aspheric surface, guarantee confocal of first diffraction element high order aspheric surface lenticule and second diffraction element high order aspheric surface lenticule;
Step 1.4) repeating step 1.2) and 1.3), required a plurality of diffraction element high order aspheric surface lenticules are coupled together, thereby need to observe the lenticular attitude of each diffraction element high order aspheric surface by monitor and adjust the lenticular attitude of each diffraction element high order aspheric surface in connection procedure, make confocal of a plurality of diffraction element high order aspheric surface lenticules, finally form diffraction element high order aspheric surface microlens array;
Step 2] laser thruster is placed on two dimension adjustment platform, then semiconductor laser, target band are mounted in laser microthruster, again by step 1.4) in mounted diffraction element high order aspheric surface microlens array be arranged between semiconductor laser and target band, utilize the microscopic system of composite instrument to adjust, until laser target surface and target band that the semiconductor laser emergent ray forms after converging through diffraction element high order aspheric surface microlens array coincide, the ablation of target band, thus powerful expulsive force produced.
Above-mentioned diffraction element high order aspheric surface microlens array is to be connected by the mode of glueing joint by a plurality of diffraction element high order aspheric surface lenticules.
On above-mentioned semiconductor laser, be equipped with for the semiconductor laser target bar of semiconductor laser heat radiation heat sink.
The invention has the beneficial effects as follows:
1. this laser microthruster optical system and installation method thereof, optical system adopts diffraction element high order aspheric surface microlens array first, changes with laser microthruster method of designing optical system in the past, and system architecture is simpler, physical dimension is less;
2. this laser microthruster optical system and installation method thereof, it is higher that the improvement design of optical system can be imitated utilization factor, can greatly reduce the power consumption utilization rate of satellite, extends the serviceable life of satellite;
3. this laser microthruster optical system and installation method thereof, change existing optical system alignment theory, utilized the composite instrument monitoring technology, controlled in real time the posture position of each lens, but the mutual alignment of each lens of rapid adjustment, guarantee that lens arra has consistance preferably;
4. this laser microthruster optical system and installation method thereof, when optical system is installed, utilize two dimension to adjust platform and can splice the multiple lens array simultaneously, guaranteed debuging fast of multiple lens array, improved the efficiency of debuging of many groups optical system.
The accompanying drawing explanation
Fig. 1 laser microthruster optical system structure schematic diagram.
Fig. 2 laser microthruster optical system installation diagram.
Reference numeral is as follows:
1-semiconductor laser target bar is heat sink; The 2-semiconductor laser; 3-diffraction element high order aspheric surface microlens array; 4-target band; The 5-composite instrument; The 6-microscopic system; The 7-two dimension is adjusted platform; The 8-monitor.
Embodiment
Below laser microthruster optical system of the present invention and installation method thereof are described in detail:
As shown in Figure 1, the laser microthruster optical system in the present invention mainly comprises semiconductor laser 2, diffraction element high order aspheric surface microlens array 3 and the target band 4 that is arranged on laser microthruster inside;
Diffraction element high order aspheric surface microlens array 3 is arranged between semiconductor laser 2 emergent raies and target band incident light; Semiconductor laser 2 emergent raies converge and form the laser target surface by diffraction element high order aspheric surface microlens array 3; Laser target surface and target band 4 coincide, and now target band 4 ablations, produce powerful energy afterwards, for providing laser microthruster required powerful expulsive force.
In addition, on semiconductor laser, be equipped with for the semiconductor laser target bar of semiconductor laser heat radiation heat sink.
Specifically, the target band in the present invention 4 adopts black ink paper or double-base powder to make usually.
In conjunction with Fig. 2, the installation method of laser microthruster optical system in the present invention comprises the following steps:
At first be the installation method of diffraction element high order aspheric surface microlens array:
Step 1] diffraction element high order aspheric surface microlens array 3 is to be connected to form by a plurality of diffraction element aspherical microlens, the Connection Step of this diffraction element high order aspheric surface microlens array is:
Step 1.1) two dimension that first diffraction element high order aspheric surface lenticule is placed into to composite instrument 5 is adjusted on platform 7, find the position of first diffraction element high order aspheric surface lenticule placement by the microscopic system 6 of composite instrument 8, and this position is recorded as to initial position;
Step 1.2) adjust the movement of platform 7 by two dimension, first diffraction element high order aspheric surface lenticule is migrated out to the field of view center of microscopic system 6, then second diffraction element high order aspheric surface lenticule is placed into to two dimension and adjusts on platform 7 and first diffraction element high order aspheric surface lenticule and second diffraction element high order aspheric surface lenticule are coupled together;
Step 1.3) observe second lenticular attitude of diffraction element high order aspheric surface by the monitor 8 be arranged on composite instrument 5, adjust second lenticular attitude of diffraction element high order aspheric surface, guarantee confocal of first diffraction element high order aspheric surface lenticule and second diffraction element high order aspheric surface lenticule;
Step 1.4) repeating step 2.2) and 2.3), required a plurality of diffraction element high order aspheric surface lenticules are coupled together, in connection procedure, need by monitoring that thereby 8 devices observe the lenticular attitude of each diffraction element high order aspheric surface and adjust the lenticular attitude of each diffraction element high order aspheric surface, make confocal of a plurality of diffraction element high order aspheric surface lenticules, finally form diffraction element high order aspheric surface microlens array 3;
Step 2] laser thruster is placed on two dimension adjustment platform 7, then semiconductor laser 2, target band 4 are mounted in laser microthruster, again by step 1.4) in mounted diffraction element high order aspheric surface microlens array 3 be arranged between semiconductor laser 2 and target band 4, utilize the microscopic system 6 of composite instrument 5 to adjust, until laser target surface and target band 4 that semiconductor laser 2 emergent raies form after converging through diffraction element high order aspheric surface microlens array 3 coincide, 4 ablations of target band, thus powerful expulsive force produced.
Special feature, the diffraction element high order aspheric surface microlens array in the present invention is to be connected to form by the mode of glueing joint by a plurality of diffraction element high order aspheric surface lenticules.
By adopting diffraction element high order aspheric surface lens can effectively reduce the usage quantity of optical element, thereby can make the physical dimension of optical system reduce, and can effectively improve the efficiency of light energy utilization, its final efficiency of light energy utilization can be increased to 86% by former 65%.
Claims (5)
1. a laser microthruster optical system, is characterized in that: comprise the semiconductor laser, diffraction element high order aspheric surface microlens array and the target band that are arranged on laser microthruster inside;
Described diffraction element high order aspheric surface microlens array is arranged between semiconductor laser emergent ray and target band incident light; Described semiconductor laser emergent ray converges and forms the laser target surface by diffraction element high order aspheric surface microlens array; Described laser target surface and target band coincide;
Described target band produces ablation under the effect of laser pass line; Described target band adopts black ink paper or double-base powder to make.
2. the installation method of a laser microthruster optical system, is characterized in that, comprises the following steps:
1] because diffraction element high order aspheric surface microlens array is to be connected to form by a plurality of diffraction element aspherical microlens, the Connection Step of this diffraction element high order aspheric surface microlens array is:
1.1) first diffraction element high order aspheric surface lenticule is placed on the two dimension adjustment platform of composite instrument, find the position of first diffraction element high order aspheric surface lenticule placement by the microscopic system of composite instrument, and this position is recorded as to initial position;
1.2) adjust the movement of platform by two dimension, first diffraction element high order aspheric surface lenticule is migrated out to the field of view center of microscopic system, then second diffraction element high order aspheric surface lenticule is placed into to two dimension and adjusts on platform, and first diffraction element high order aspheric surface lenticule and second diffraction element high order aspheric surface lenticule are coupled together;
1.3) observe second lenticular attitude of diffraction element high order aspheric surface by the imaging that is arranged on the monitor on composite instrument, and adjust second lenticular attitude of diffraction element high order aspheric surface, guarantee confocal of first diffraction element high order aspheric surface lenticule and second diffraction element high order aspheric surface lenticule;
1.4) repeating step 1.2) and 1.3), required a plurality of diffraction element high order aspheric surface lenticules are coupled together, thereby need to observe the lenticular attitude of each diffraction element high order aspheric surface by monitor and adjust the lenticular attitude of each diffraction element high order aspheric surface in connection procedure, make confocal of a plurality of diffraction element high order aspheric surface lenticules, finally form diffraction element high order aspheric surface microlens array;
2] laser thruster being placed into to two dimension adjusts on platform, then semiconductor laser, target band are mounted in laser microthruster, again by step 1.4) in mounted diffraction element high order aspheric surface microlens array be arranged between semiconductor laser and target band, utilize the microscopic system of composite instrument to adjust, until laser target surface and target band that the semiconductor laser emergent ray forms after converging through diffraction element high order aspheric surface microlens array coincide.
3. laser microthruster optical system according to claim 1 is characterized in that: described diffraction element high order aspheric surface microlens array is to be connected by the mode of glueing joint by a plurality of diffraction element high order aspheric surface lenticules.
4. the installation method of laser microthruster optical system according to claim 2 is characterized in that: described diffraction element high order aspheric surface microlens array is to be connected by the mode of glueing joint by a plurality of diffraction element high order aspheric surface lenticules.
5. according to the described laser microthruster optical system of claim 1 or 3, it is characterized in that: on described semiconductor laser, be equipped with for the semiconductor laser target bar of semiconductor laser heat radiation heat sink.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597629A (en) * | 2016-12-29 | 2017-04-26 | 中国科学院西安光学精密机械研究所 | Micro-lens optical splicing system and method |
| CN116296270A (en) * | 2023-02-15 | 2023-06-23 | 中国人民解放军战略支援部队航天工程大学 | Method and system for monitoring on-orbit working state of target belt type laser ablation micro-thruster |
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|---|---|---|---|---|
| US5148322A (en) * | 1989-11-09 | 1992-09-15 | Omron Tateisi Electronics Co. | Micro aspherical lens and fabricating method therefor and optical device |
| JPH06229871A (en) * | 1993-02-02 | 1994-08-19 | Hitachi Cable Ltd | Adjusting method for optical axis of optical component |
| CN102022299A (en) * | 2010-12-07 | 2011-04-20 | 中国人民解放军国防科学技术大学 | Laser microthruster |
| CN102749042A (en) * | 2012-07-16 | 2012-10-24 | 南京理工大学 | Double-triangle type multi-channel medium wave infrared interference detection device |
| CN103165717A (en) * | 2013-03-29 | 2013-06-19 | 苏州百纳思光学科技有限公司 | Concentrating photovoltaic module comprising small Fresnel lens array |
| CN203480064U (en) * | 2013-09-06 | 2014-03-12 | 中国科学院西安光学精密机械研究所 | Laser micro thruster optical system |
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- 2013-09-06 CN CN201310404575.5A patent/CN103499848B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5148322A (en) * | 1989-11-09 | 1992-09-15 | Omron Tateisi Electronics Co. | Micro aspherical lens and fabricating method therefor and optical device |
| JPH06229871A (en) * | 1993-02-02 | 1994-08-19 | Hitachi Cable Ltd | Adjusting method for optical axis of optical component |
| CN102022299A (en) * | 2010-12-07 | 2011-04-20 | 中国人民解放军国防科学技术大学 | Laser microthruster |
| CN102749042A (en) * | 2012-07-16 | 2012-10-24 | 南京理工大学 | Double-triangle type multi-channel medium wave infrared interference detection device |
| CN103165717A (en) * | 2013-03-29 | 2013-06-19 | 苏州百纳思光学科技有限公司 | Concentrating photovoltaic module comprising small Fresnel lens array |
| CN203480064U (en) * | 2013-09-06 | 2014-03-12 | 中国科学院西安光学精密机械研究所 | Laser micro thruster optical system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597629A (en) * | 2016-12-29 | 2017-04-26 | 中国科学院西安光学精密机械研究所 | Micro-lens optical splicing system and method |
| CN116296270A (en) * | 2023-02-15 | 2023-06-23 | 中国人民解放军战略支援部队航天工程大学 | Method and system for monitoring on-orbit working state of target belt type laser ablation micro-thruster |
| CN116296270B (en) * | 2023-02-15 | 2024-04-26 | 中国人民解放军战略支援部队航天工程大学 | Method and system for monitoring on-orbit working state of target belt type laser ablation micro-thruster |
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