CN105827310A - Wide angle beam expander-based multipoint laser communication optical antenna - Google Patents
Wide angle beam expander-based multipoint laser communication optical antenna Download PDFInfo
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- CN105827310A CN105827310A CN201610168447.9A CN201610168447A CN105827310A CN 105827310 A CN105827310 A CN 105827310A CN 201610168447 A CN201610168447 A CN 201610168447A CN 105827310 A CN105827310 A CN 105827310A
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- optical antenna
- expanding lens
- radix rumicis
- beam expanding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
Abstract
The present invention relates to a wide angle beam expander-based multipoint laser communication optical antenna, and belongs to the space laser communication technology field. The wide angle beam expander-based multipoint laser communication optical antenna provided by the present invention is composed of a wide angle beam expander optical antenna subsystem, a dual-optical wedge coarse tracking subsystem, an incident laser detection subsystem and a beam compressing optical subsystem, utilizes a wide angle beam expander to receive the target signals within an omnibearing and pitching large angle range, utilizes a dual-optical wedge set to track a plurality of targets simultaneously, and utilizes a cassette beam compressing system to compress a light beam caliber received by a large-caliber optical antenna, thereby reducing the caliber of a subsequent system and the processing design difficulty, and facilitating the light-duty design of an optical system. The wide angle beam expander-based multipoint laser communication optical antenna of the present invention facilitates carrying out the laser communication on a plurality of communication targets in very close spatial orientations simultaneously.
Description
Technical field
The present invention relates to a kind of optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens, belong to FreeSpace Laser Communications Technique field.
Background technology
Laser space communication, compared with other radio communication, has advantages such as need not frequency license, frequency width, with low cost, good confidentiality, electromagnetism interference.Many countries have put into substantial contribution and manpower carries out FreeSpace Laser Communications Technique research in the world, and achieve multinomial achievement in terms of the Demonstrator Trials of theoretical research, analogue simulation, tackling problems in key technologies, principle prototype development and multiple link.The most successfully laser communication demonstration and verification is all point-to-point mode of operation, and development trend is point to multi--point and multi-point laser communication simultaneously, thus realizes laser space communication networking.Japan proposes the double-deck low orbit global communication networking plan that is combined with microwave communication of laser, specifically demonstrates the low aerial deployment two the earth 700 kilometers and 2000 kilometers and overlaps the feasibility of satellite system；Use laser interconnection technique to carry out information transmission between satellite, be responsible for by upper strata satellite with the communication link of the juncture station on ground, use laser link；Lower floor's satellite is responsible for and small-scale terrestrial station and the communication of mobile subscriber, uses microwave link.(list of references: 1, the some pondering to Developing Mobile Satellite Communication. Zhang Naitong, Liu Huijie, just sea are refined. electric and electronic teaching journal .2002, volume 24 the 1st phase .2, deep space TT&C development communication technologies trend analysis. Lin Mo .2005, volume 24 the 3rd phase .3, the preliminary study of star ground optic communication Point-to-multipoint scheme. Zhang Cheng, Gu Wenbo etc. photon journal .2008, the 2nd phase of volume 37.), the method that additionally U.S. proposes two kinds of laser space communication networkings, one of which method is to place multiple sending and receiving ends at reflecting element, by adjusting position, sending and receiving end, realize difference, (U.S. Patent number: 6445496B1) is adopted in the laser space communication of different distance, another kind of method is to utilize R-C to look in the distance structure, the fiber array of N × N is placed at focal plane, bigger focal plane is provided, realize single optics look in the distance structure point to multi--point laser space communication use detector array couple with focal plane expansion field of view of receiver scheme (U.S. Patent number: 6912360B1).These build the Tentative Ideas of concrete system about laser communication networking, it is impossible to be applied to multi-point laser space communication networking on a large scale, there is bottleneck technically, do not possess being widely applied property.A Chinese patent " a kind of point to multi--point laser communication device based on diverse combined rotary paraboloid structure " (patent No.: ZL201010199217.1) is also had to use the paraboloid of revolution as optical antenna, this kind of structural energy utilization rate is low, Receiver aperture is big, and subsequent optical system processing arrangement etc. realizes more difficult.Another patent " laser space communication with big visual field concentric spherical surface device " (number of patent application: 201418004682.4) uses big visual field concentric spherical surface device to realize multiple spot laser communication simultaneously, but its sending and receiving apparatus need to control relatively difficult in the enterprising line slip of image planes to realize the tracking to target.An other patent " a kind of optical antenna for multipoint laser communication " (patent No.: ZL201110141158.7) uses multiple reflection essence splicing optical antenna to realize point to multi--point laser communication, above-mentioned five kinds of patents can not to two attitudes very close to target carry out laser space communication simultaneously.
Summary of the invention
In order in multipoint laser communication system, it is achieved to multiple attitudes very close to target carry out laser space communication simultaneously, the present invention proposes a kind of optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens.
A kind of optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens, this device is made up of Radix Rumicis beam expanding lens optical antenna subsystem (1), double wedge rough tracking subsystem (2), incident laser detection subsystem (3), cassette contracting bundle subsystem (4).
Radix Rumicis beam expanding lens optical antenna subsystem (1) makes for constructing by being inverted by Galilean telescope, its angle of visual field is bigger, orientation is up to 360, pitch orientation is up to 0～± 80, the incident illumination of different angles after Radix Rumicis beam expanding lens optical antenna subsystem (1) with parallel light emergence, and overlapping at antenna emergent pupil, but exit direction is different.
Double wedges rough tracking subsystem (2) are made up of N number of pair of wedge (7), are positioned at Radix Rumicis beam expanding lens optical antenna subsystem (1) emergent pupil.
Incident laser detection subsystem (3) is detected camera (10) by incident laser detecting lenses (9) and incident laser and forms, being positioned over Radix Rumicis beam expanding lens optical antenna subsystem (1) outside, its optical axis is parallel with Radix Rumicis beam expanding lens optical antenna subsystem (1).
After cassette contracting bundle subsystem (4) is positioned over double wedge rough tracking subsystem (2) along described antenna spindle direction.
The work process of a kind of optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens is as follows:
Incide Radix Rumicis beam expanding lens optical antenna subsystem (1) and incident laser detection subsystem (3) from the incident laser beam of space different directions, for directional light after transmission-type Radix Rumicis beam expanding lens (5) expands, and overlapping at camera lens emergent pupil (6) place, incide the most at different angles in double wedge rough tracking subsystem (2).Incident laser detection subsystem (3) detects direction and the light beam number of incident laser simultaneously, and transmit these information to double wedge rough tracking subsystem (2), according to beam direction information, corresponding double wedges (7) are controlled, it is allowed to rotate corresponding angle, make the incident illumination at Radix Rumicis beam expanding lens optical antenna subsystem (1) emergent pupil after double wedge group deviations, antenna rotary shaft can be parallel to and spread into cassette contracting bundle subsystem (4), to complete the rough tracking to target.According to light beam number, N number of pair of wedge (7) is optimized control, makes all pairs of wedge groups incident beam corresponding thereto can be carried out suitable deviation, to improve the capacity usage ratio of system.This completes and follow the tracks of while multiple echo signal light, incident illumination after double wedge group deviations is parallel to systematic optical axis and enters in cassette contracting bundle subsystem (4), carried out separating detection by subsequent optical system again, this completes multipoint laser communication and receive；For multiple attitudes very close to communication target, a communication target is tracked and communicates by available double wedges, thus realize to multiple attitudes very close to target carry out laser space communication simultaneously.According to light path principle of reversibility, emission system in post laser communication system launches laser beam according to the direction of target to be communicated, after cassette contracting bundle subsystem (4), incide in double wedge rough tracking system (2), deviation is carried out by corresponding double wedges (7), then launched according to fixed-direction by Radix Rumicis beam expanding lens optical antenna subsystem (1), this completes multipoint laser communication and launch.
Beneficial effect
The present invention proposes optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens and is capable of the laser communication of point to multi--point the most all-round, that pitch orientation is in the design angle of visual field；Compared with prior art, the invention has the beneficial effects as follows: being realized the rough tracking to target by double wedge groups, therefore compared to based on paraboloidal optical antenna, its two targets that can realize attitude is close communicate simultaneously；Comparing and big visual field concentric spherical surface device, its tracing control difficulty is less；Use cassette contracting bundle subsystem simultaneously, the beam diameter that large-aperture optical antenna receives is compressed, reduces the bore of follow-up system, the small light of reduction fabrication design difficulty beneficially optical system；Additionally this optical antenna can determine tracking scheme the most flexibly according to target, and in the case of target is less, available multiple pairs of wedges follow the tracks of same target, improves the system efficiency of light energy utilization, beneficially system resource reasonably optimizing configuration.
Accompanying drawing explanation
Fig. 1 is a kind of optical antenna for multipoint laser communication schematic diagram based on Radix Rumicis beam expanding lens, this figure is also specification digest accompanying drawing, wherein: 1 Radix Rumicis beam expanding lens optical antenna subsystem, 2 pairs of wedge rough tracking subsystems, 3 incident laser detections) subsystem, 4 cassette contracting bundle subsystems.
Fig. 2 is optical antenna subsystem schematic diagram, wherein 5 transmission-type Radix Rumicis beam expanding lens, and 6 is antenna emergent pupil.
Fig. 3 is double wedge rough tracking subsystem schematic diagrams, and this figure is the top view of double wedge rough tracking subsystem, and wherein 7 is double wedges.
Fig. 4 is double wedge schematic diagrams, and this figure is the side sectional view of double wedge, wherein 8 monochromatic light wedge.
Fig. 5 position incident laser detection subsystem schematic diagram, wherein 9 is laser acquisition camera lens, and 10 is laser acquisition camera.
Detailed description of the invention
Optical antenna subsystem (1) uses transmission-type Radix Rumicis beam expanding lens (5), is used for receiving the signal of communication light of different communication objective emission, and its working range orientation is up to 360, and pitch orientation is up to 0～± 80.After the flashlight of different communication objective emission transmission-type Radix Rumicis beam expanding lens (5) in optical antenna subsystem (1) expands, with parallel light emergence, and overlapping at antenna emergent pupil (6) place, but each flashlight exit direction is different.The incident angle of emergent ray is relatively small, more than 100 degree at target zone angle reduced to for ten several years.Owing to pitching changes in small angle range, double wedge rough tracking subsystem (2) therefore can be used to realize rough tracking while multiple targets.
Double wedges (7) are made up of by double wedges rough tracking subsystem (2) N, such as Fig. 3, are the top views of double wedge rough tracking subsystem (2), and each circle represents a pair pair of wedge (7).Shown in Fig. 4, represent the side sectional view of double wedge (7), each triangle represents a monochromatic light wedge (8), when light beam incides every a pair pair of wedge (7) when, two monochromatic light wedges (8) rotate against certain angle and realize the deflection to light beam, reach to deflect the effect of light beam.Every pair of double wedges (7) realize the tracking to a target, and whole system can realize the rough tracking of N number of target simultaneously.After every pair of double wedges (7) all achieve stable rough tracking to all of target, each echo signal light is propagated each parallel to system axial rotary follow-up system.Owing to angle of incidence and the target number of each flashlight to double wedges rough tracking subsystem (2) are required for determining in advance, by optical antenna, therefore it is placed in parallel incident laser detection subsystem (3).
Incident laser detection subsystem (3) is made up of incident laser detecting lenses (9) and laser acquisition camera (10), being positioned over Radix Rumicis beam expanding lens optical antenna subsystem (1) outside, its optical axis is parallel with Radix Rumicis beam expanding lens optical antenna subsystem (1).All echo signal light all can be responded by laser acquisition camera (10), it is assured that flashlight incident angle according to facula position, make it deflect suitable angle to double wedge (7) driving instruction, make flashlight be parallel in the visual field that system rotary shaft enters cassette contracting bundle subsystem (4).According to the target number determined, to each pair of wedge (7) distribution rough tracking task, in the case of target is less, same target can be followed the tracks of, to improve the system efficiency of light energy utilization as far as possible with two even three double wedges (7).
Cassette contracting bundle subsystem (4) carries out contracting bundle to the light beam through optical antenna subsystem (1) and double wedge rough tracking subsystem (2).Then subsequent optical system carries out separating detection, this completes multipoint laser communication and receives；According to light path principle of reversibility, emission system in post laser communication system launches laser beam according to the direction of target to be communicated, after cassette contracting bundle subsystem (4), incide in double wedge rough tracking system (2), deviation is carried out by corresponding double wedges (7), then launched according to fixed-direction by Radix Rumicis beam expanding lens optical antenna subsystem (1), this completes multipoint laser communication and launch.
Claims (6)
1. an optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens, it is characterized in that, this device is made up of Radix Rumicis beam expanding lens optical antenna subsystem (1), double wedge rough tracking subsystem (2), incident laser detection subsystem (3), cassette contracting bundle subsystem (4).
2. according to a kind of based on Radix Rumicis beam expanding lens the optical antenna for multipoint laser communication described in right 1, it is characterized in that, Radix Rumicis beam expanding lens optical antenna subsystem (1) makes for constructing by being inverted by Galilean telescope, its angle of visual field is bigger, orientation up to 360, pitch orientation up to 0 ~ ± 80, the incident illumination of different angles after Radix Rumicis beam expanding lens optical antenna subsystem (1) with parallel light emergence, and overlapping at antenna emergent pupil, but exit direction is different.
3., according to a kind of based on Radix Rumicis beam expanding lens the optical antenna for multipoint laser communication described in right 1, it is characterised in that double wedges rough tracking subsystem (2) are made up of N number of pair of wedge (7), it is positioned at Radix Rumicis beam expanding lens optical antenna subsystem (1) emergent pupil.
4. according to a kind of based on Radix Rumicis beam expanding lens the optical antenna for multipoint laser communication described in right 1, it is characterized in that, incident laser detection subsystem (3) is detected camera (10) by incident laser detecting lenses (9) and incident laser and forms, being positioned over Radix Rumicis beam expanding lens optical antenna subsystem (1) outside, its optical axis is parallel with Radix Rumicis beam expanding lens optical antenna subsystem (1).
5. according to a kind of based on Radix Rumicis beam expanding lens the optical antenna for multipoint laser communication described in right 1, it is characterised in that after cassette contracting bundle subsystem (4) is positioned over double wedge rough tracking subsystem (2) along described antenna spindle direction.
6. according to a kind of based on Radix Rumicis beam expanding lens the optical antenna for multipoint laser communication described in right 1, it is characterised in that the work process of a kind of optical antenna for multipoint laser communication based on Radix Rumicis beam expanding lens is as follows:
nullIncide Radix Rumicis beam expanding lens optical antenna subsystem (1) and incident laser detection subsystem (3) from the incident laser beam of space different directions，For directional light after transmission-type Radix Rumicis beam expanding lens (5) expands，And it is overlapping at camera lens emergent pupil (6) place，Incide the most at different angles in double wedge rough tracking subsystem (2)，Incident laser detection subsystem (3) detects direction and the light beam number of incident laser simultaneously，And transmit these information to double wedge rough tracking subsystem (2)，According to beam direction information, corresponding double wedges (7) are controlled，It is allowed to rotate corresponding angle，Make the incident illumination at Radix Rumicis beam expanding lens optical antenna subsystem (1) emergent pupil after double wedge group deviations，Antenna rotary shaft can be parallel to and spread into cassette contracting bundle subsystem (4)，To complete the rough tracking to target，According to light beam number, N number of pair of wedge (7) is optimized control，Make all pairs of wedge groups incident beam corresponding thereto can be carried out suitable deviation，To improve the capacity usage ratio of system，This completes and follow the tracks of while multiple echo signal light，Incident illumination after double wedge group deviations is parallel to systematic optical axis and enters in cassette contracting bundle subsystem (4)，Carried out separating detection by subsequent optical system again，This completes multipoint laser communication to receive；For multiple attitudes very close to communication target, one communication target is tracked and communicates by available double wedges, thus realize to multiple attitudes very close to target carry out laser space communication simultaneously, according to light path principle of reversibility, emission system in post laser communication system launches laser beam according to the direction of target to be communicated, after cassette contracting bundle subsystem (4), incide in double wedge rough tracking system (2), deviation is carried out by corresponding double wedges (7), then launched according to fixed-direction by Radix Rumicis beam expanding lens optical antenna subsystem (1), this completes multipoint laser communication to launch.
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Cited By (7)
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| CN109120344A (en) * | 2018-10-30 | 2019-01-01 | 宁波光舟通信技术有限公司 | Signal transmitting system between star |
| CN110233666A (en) * | 2019-06-06 | 2019-09-13 | 长春理工大学 | A kind of optical antenna for multipoint laser communication based on biconvex reflection microscope group |
| CN110299940A (en) * | 2019-06-06 | 2019-10-01 | 长春理工大学 | A kind of optical antenna for multipoint laser communication based on refraction-reflection annular lens |
| CN110308553A (en) * | 2019-07-29 | 2019-10-08 | 天津大学 | The middle infrared imaging optical system of visual field switching is carried out based on microlens array |
| CN111610626A (en) * | 2020-05-29 | 2020-09-01 | 中国科学院长春光学精密机械与物理研究所 | Antenna structure capable of realizing simultaneous and continuous multi-path laser communication |
| CN112543059A (en) * | 2020-12-09 | 2021-03-23 | 长春理工大学 | Common receiving optical path wireless laser communication networking antenna |
| CN112564793A (en) * | 2020-12-07 | 2021-03-26 | 长春理工大学 | One-point multiple access space laser communication networking terminal and system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109120344A (en) * | 2018-10-30 | 2019-01-01 | 宁波光舟通信技术有限公司 | Signal transmitting system between star |
| CN110233666A (en) * | 2019-06-06 | 2019-09-13 | 长春理工大学 | A kind of optical antenna for multipoint laser communication based on biconvex reflection microscope group |
| CN110299940A (en) * | 2019-06-06 | 2019-10-01 | 长春理工大学 | A kind of optical antenna for multipoint laser communication based on refraction-reflection annular lens |
| CN110308553A (en) * | 2019-07-29 | 2019-10-08 | 天津大学 | The middle infrared imaging optical system of visual field switching is carried out based on microlens array |
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| CN112564793A (en) * | 2020-12-07 | 2021-03-26 | 长春理工大学 | One-point multiple access space laser communication networking terminal and system |
| CN112564793B (en) * | 2020-12-07 | 2022-04-12 | 长春理工大学 | One-point multiple access space laser communication networking terminal and system |
| CN112543059A (en) * | 2020-12-09 | 2021-03-23 | 长春理工大学 | Common receiving optical path wireless laser communication networking antenna |
| CN112543059B (en) * | 2020-12-09 | 2022-03-29 | 长春理工大学 | Common receiving optical path wireless laser communication networking antenna |
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