CN206471032U - Laser communication apparatus for demonstrating - Google Patents
Laser communication apparatus for demonstrating Download PDFInfo
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- CN206471032U CN206471032U CN201621268270.1U CN201621268270U CN206471032U CN 206471032 U CN206471032 U CN 206471032U CN 201621268270 U CN201621268270 U CN 201621268270U CN 206471032 U CN206471032 U CN 206471032U
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Abstract
The utility model discloses a kind of laser communication apparatus for demonstrating, for the display opticses technology in science and technology center, belong to optics Popular Science Education quasi-instrument.A kind of laser space communication apparatus for demonstrating includes transmitter and receiver.Emitter includes near infrared laser, visible laser, beam merging apparatus, light transmitting antenna.Receiver includes light receiver aerial, beam splitting arrangement, baffle plate, detector.Emitter is connected comprising emitter data wire with camera, and receiver data wire is connected with television set.Spectators transmit signal interruption with hand blocking laser beam, and television set no longer shows camera shooting picture.A kind of laser communication apparatus for demonstrating strengthens the active aspiration to knowledge of spectators using Interactive Experience, compensate for the situation that scientific and technological museum lacks laser communication technology class showpiece.
Description
Technical field
The present invention relates to a kind of laser communication apparatus for demonstrating, it is the optics sci-tech exhibit put on display for science and technology center, belongs to light
Learn education quasi-instrument.
Background technology
Laser communication technology is by the use of laser light wave as carrier wave, using air or free space as transmission channel, multiple
The newest communication technology of big data quantity communication is realized between terminal.Compared with microwave communication and fiber optic communication, laser communication has
Maneuverability, operating cost are low, bandwidth, strong anti-electromagnetic interference capability the advantages of.Laser communication is not take up radio-frequency spectrum money
Source, do not need demand frequency license, do not lay the problem of pipeline excavates road, set up flexible, can complete ground-to-ground, pair
It is empty, air to air etc. a variety of fiber optic communications can not traffic carried task.
At this stage, laser communication is usually used in the fields such as the earth-intersatellite communication, ground-plane-to-plane communication, without widely
Applied to the daily life communications field.The public is relatively low to the cognition degree of laser space communication.Electromagnetic wave passes through the less quilt of atmosphere
Reflection, absorption and scattering, and the high wave band of transmissivity is referred to as atmospheric window.Near infrared light is in atmospheric window.To avoid swashing
Optical attenuation is too fast, reaches the purpose for transmitting information over long distances, and common laser communication device uses near-infrared laser as signal
Carrier.Near-infrared laser can not be arrived by eye-observation.The public can not intuitively observe, experience the connection of laser space communication with
Block.Because cognition degree is low, the reason such as displaying difficulty, domestic and international science and technology center field lacks to take into account and intellectual is used for interactive
The sci-tech exhibit of spacial flex laser communication technology.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of laser communication simple in construction, being easy to observation to the general public
Apparatus for demonstrating, and the device possesses interesting, interactive and science.
To solve the above problems, being used to drill to the laser communication of public display laser communication technology the invention provides a kind of
Showing device, the device includes transmitter and receiver.Emitter is placed in opposite directions with receiver.Emitter includes near-infrared laser
Device, visible laser, beam merging apparatus（Such as plated film lens, prism）, light transmitting antenna.Receiver include light receiver aerial,
Beam splitting arrangement（Such as plated film lens, Amici prism）, baffle plate, detector.After the modulated device of input signal, drive processes, drive
Dynamic near infrared laser, transmitting includes the near-infrared laser beam of modulated signal.Visible laser transmitting is free of modulated signal
Continuous laser.The near-infrared laser beam that the visible laser beam of visible laser transmitting is launched near infrared laser is by closing
Bundle device is combined into a branch of coaxial laser beam, through light transmitting antenna, is projected from emitter.Comprising infrared laser and visible laser
Laser beam is propagated in atmosphere, directive receiver.Receiver receives synthesized laser beam, is first assembled by light receiver aerial, then by
Beam splitting arrangement, the visible laser beam without modulated signal and the near-infrared laser comprising modulated signal are reduced to by laser beam
Beam.Visible laser beam is blocked by baffle plate, prevents from projecting receiver.Near-infrared laser beam containing modulated signal is to detection
Device, detector extracts the modulated signal that near-infrared laser beam is included.Signal device, modulator processing after filtering, is reduced to
With the identical output signal of input signal.
As the first improvement of the present invention, described laser communication apparatus for demonstrating can also include speculum.Emitter
With receiver laid parallel.Two-face mirror is positioned over emitter and receiver surface in 90 ° of angles.What emitter was launched includes
The reflected secondary reflection of mirror two injects receiver to the laser beam of infrared laser and visible laser in atmosphere.
The deformation of the first improvement project, number of mirrors is no less than 1 piece, it is ensured that the laser beam that emitter is projected passes through institute
There is speculum transmitting, finally inject receiver.
As a modification of the present invention, emitter can use data wire and camera, microphone, signal generator etc.
Signal source is connected, and correspondingly the signal receiver such as receiver and TV, loudspeaker, oscillograph is connected.When emitter and camera
When connection, receiver are connected with television set, the picture that camera is collected can be presented in real time on television set.
The present invention is it will be seen that light is as light is indicated, near-infrared laser serves the work of optimization demonstrating effect as flashlight
With, make spectators produce visible light transmissions illusion.Spectators' hand or other object breaks laser beams, receiver can not be detected
To laser beam, signal interruption is transmitted, laser communication apparatus for demonstrating is reached and possesses interactive purpose, further enhance spectators' ginseng
With feeling, exciting spectators' aspiration to knowledge.
Brief description of the drawings
Fig. 1 is the schematic diagram of the first embodiment of laser communication apparatus for demonstrating.
Fig. 2 is the schematic diagram of second of embodiment of laser communication apparatus for demonstrating.
Fig. 3 is the schematic diagram of the third embodiment of laser communication apparatus for demonstrating.
Fig. 4 is laser communication apparatus for demonstrating workflow schematic diagram.
Wherein：1st, emitter, 2, receiver, 3, visible light lasers and near-infrared laser close the laser beam after beam, and 41, reflection
Mirror, 42, speculum, 5, camera, 51, the data wire being connected with emitter, 6, television set, 61, the data being connected with receiver
Line.
Embodiment
Three kinds of embodiments to laser communication apparatus for demonstrating of the present invention elaborate below in conjunction with the accompanying drawings.
In the first embodiment, as shown in figure 1, laser communication apparatus for demonstrating includes emitter 1 and receiver 2.Device
Demonstrate before work, transmitter and receiver is positioned on level table opposite to each other, it is ensured that light transmitting antenna and light receiver aerial water
It is flat coaxial.
As shown in figure 4, in emitter, it is seen that light laser launches the continuous visible laser beam for only serving indicative function.
After the modulated device processing of input signal, input driver, near infrared laser is driven, the near-infrared comprising modulated signal is produced and swashs
Light beam.Beam merging apparatus will be seen that ray laser beam is combined into a branch of coaxial laser near infrared light laser beam, be expanded through light transmitting antenna
Emitter is projected after shaping.Air as laser beam transmission channel.Laser beam 3 is propagated after a segment distance in atmosphere, is connect
Receipts machine is received.Laser beam convergence shaping of the light receiver aerial to receiving, then by beam splitting arrangement by the visible light lasers of instruction
The near-infrared laser beam of beam and transmission signal is separated.Visible ray directive baffle plate, stops laser propagation.Detector receives near-infrared
Laser beam, and extract the signal that near-infrared laser beam is included.The processing such as signal is filtered, modulation, are finally reduced into and input
The identical output signal of signal.
When watching laser communication demonstration, spectators are observed that input signal and output signal are identical.Spectators
Stop the laser 3 that emitter is launched with hand or other objects, transmit signal interruption, the output of the no signal of receiver 2.
In second of embodiment, as shown in Fig. 2 laser communication apparatus for demonstrating also includes speculum 41 and speculum 42.
Emitter 1 and the laid parallel of emitter 2.Speculum 41 is positioned over the surface of emitter 1, and speculum 42 is positioned over receiver 2
Surface.The angle of transmitting mirror 41 and speculum 42 is 90 °.The reflected mirror 41 of laser beam and speculum that emitter 1 is sent
42 reflection, injects receiver 2.
In the improved procedure of second of embodiment, number of mirrors is no less than 1 piece, and the laser beam 3 that emitter 1 is launched is passed through
Speculum multiple reflections, inject receiver 2.
In the third embodiment, as shown in figure 4, the data wire 51 of emitter 1 is connected with camera 5, receiver 2 uses number
It is connected according to line 61 with television set 6.The picture that camera 5 is photographed is shown on television set 6.Spectators' hand or other object breaks swash
Light beam 3, receiver 2 is not received on the signal of the transmission of laser beam 3, TV 6 without picture.After obstacle is taken away, laser beam 3 is again
Secondary to inject receiver 2 from emitter 1, TV 6 recovers to show the picture that camera 5 is shot.
In the improved procedure of the third embodiment, emitter 1 can also pass through data wire and microphone, signal generator
Etc. signal source connection, correspondingly receiver 2 is connected by signal receivers such as data wire and loudspeaker, oscillographs.
Claims (6)
1. a kind of laser communication apparatus for demonstrating, including transmitter and receiver, it is characterised in that emitter includes near-infrared laser
Device and visible laser, can launch the near-infrared laser comprising modulated signal and the continuous laser without modulated signal.
2. laser communication apparatus for demonstrating according to claim 1, it is characterized in that described emitter includes beam merging apparatus, connects
Receipts machine includes beam splitting arrangement.
3. laser communication apparatus for demonstrating according to claim 2, it is characterized in that described laser communication apparatus for demonstrating includes
Speculum.
4. laser communication apparatus for demonstrating according to claim 3, it is characterized in that the number of mirrors is 2, in 90 ° of angles
It is respectively placed in directly over transmitter and receiver.
5. laser communication apparatus for demonstrating according to claim 2, it is characterized in that described laser communication apparatus for demonstrating includes
Video camera, is connected with data wire with emitter.
6. laser communication apparatus for demonstrating according to claim 5, it is characterized in that described laser communication apparatus for demonstrating includes
Television set, is connected with data wire with receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268270.1U CN206471032U (en) | 2016-11-25 | 2016-11-25 | Laser communication apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268270.1U CN206471032U (en) | 2016-11-25 | 2016-11-25 | Laser communication apparatus for demonstrating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206471032U true CN206471032U (en) | 2017-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621268270.1U Active CN206471032U (en) | 2016-11-25 | 2016-11-25 | Laser communication apparatus for demonstrating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448394A (en) * | 2016-11-25 | 2017-02-22 | 长春中国光学科学技术馆 | Laser communication demonstration apparatus |
-
2016
- 2016-11-25 CN CN201621268270.1U patent/CN206471032U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448394A (en) * | 2016-11-25 | 2017-02-22 | 长春中国光学科学技术馆 | Laser communication demonstration apparatus |
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