CN109613711B - Method and device for leading out optical axis of emergent light beam of optical antenna - Google Patents
Method and device for leading out optical axis of emergent light beam of optical antenna Download PDFInfo
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- CN109613711B CN109613711B CN201811645095.7A CN201811645095A CN109613711B CN 109613711 B CN109613711 B CN 109613711B CN 201811645095 A CN201811645095 A CN 201811645095A CN 109613711 B CN109613711 B CN 109613711B
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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
- G02B27/32—Fiducial marks and measuring scales within the optical system
- G02B27/34—Fiducial marks and measuring scales within the optical system illuminated
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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
- G02B27/32—Fiducial marks and measuring scales within the optical system
- G02B27/36—Fiducial marks and measuring scales within the optical system adjustable
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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
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
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Abstract
The embodiment of the invention discloses a method and a device for leading out an optical axis of an emergent beam of an optical antenna, relates to the technical field of aerospace, and mainly aims to solve the problem of accurately finding out the position of the optical axis of the emergent beam of the optical antenna. The technical scheme of the invention comprises the following steps: after the collimator light source is started, determining the relative position of a cross wire in the collimator and a cross wire on the plane mirror based on the first angle measurement component, and if the determined relative position is larger than a preset distance threshold, adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position to enable the relative position to be smaller than or equal to the preset distance threshold; after the collimator light source is turned off and the auto-collimation light source of the first angle measurement component is started, determining the position of a light spot of the collimation light source based on the first angle measurement component; and if the light spot position is determined not to be located at the center of the cross wire on the plane mirror, adjusting the inclination amount of an adjusting tool of the plane mirror according to the position of the light spot of the collimation light source, and returning the light spot to the position of the cross wire on the plane mirror.
Description
Technical Field
The embodiment of the invention relates to the technical field of aerospace, in particular to a method and a device for leading out an optical axis of an emergent beam of an optical antenna.
Background
With the development of communication technology, the popularization and application of artificial satellites, also called artificial satellites, have been rapidly developed. At present, the artificial satellite is the spacecraft which is the fastest in development and the most widely used.
The laser communication has the advantages of large communication capacity, high transmission rate, good confidentiality, small terminal equipment volume, low power consumption and the like, so the laser communication becomes one of important ways of satellite-borne communication. The optical antenna system is an important component of satellite-borne laser communication, and the performance of the optical antenna system directly affects the performance of laser communication, so how to accurately find out the position of an optical axis of an emergent beam of the optical antenna to realize the performance of laser communication becomes an urgent problem to be solved.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for extracting an optical axis of an emergent beam of an optical antenna, so as to solve the problem of accurately finding a position of the optical axis of the emergent beam of the optical antenna.
In order to solve the above problems, embodiments of the present invention mainly provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a method for extracting an optical axis of an outgoing light beam of an optical antenna, where the method includes:
after a collimator light source is started, determining the relative position of a cross wire in the collimator and a cross wire on a plane mirror based on a first angle measurement component, and judging whether the relative position is greater than a preset distance threshold value;
if the relative position is determined to be larger than a preset distance threshold, adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position to enable the relative position to be smaller than or equal to the preset distance threshold;
after the collimator light source is turned off and the auto-collimation light source of the first angle measurement assembly is started, determining the light spot position of the collimation light source based on the first angle measurement assembly, and judging whether the light spot position is located at the position of a cross hair on the plane mirror;
and if the light spot position is determined not to be located at the center of the cross hair on the plane mirror, adjusting the inclination amount of an adjusting tool of the plane mirror according to the position of the collimated light source light spot, and enabling the light spot to return to the position of the cross hair on the plane mirror.
Optionally, before the collimator light source is started and the relative positions of the cross-hair in the collimator and the cross-hair on the plane mirror are determined by the first angle measuring assembly, the method further comprises:
starting a second angle measurement component, the collimator light source and the first angle measurement component, and adjusting the horizontal position of the collimator to enable the optical axis of the collimator to be coaxial with the optical axis of the second angle measurement component;
and adjusting the optical axis of the first angle measurement component to be orthogonal to the optical axis of the second angle measurement component in reference and to be equal in height to the optical axis of the second angle measurement component.
Optionally, before the collimator light source is started and the relative positions of the cross-hair in the collimator and the cross-hair on the plane mirror are determined by the first angle measuring assembly, the method further comprises:
judging whether the center of the cross wire of the collimator coincides with the center of a cross reticle of the optical antenna by the second angle measuring component, wherein the cross reticle representing an optical incident optical axis is installed in the optical antenna lens barrel, and the cross wire is generated when the parallel light beam penetrates through the cross reticle in the optical antenna lens barrel;
if the center of the cross wire of the collimator is determined not to coincide with the center of the cross reticle of the optical antenna, adjusting the eccentricity of a supporting tool of the optical antenna according to the measurement result of the second angle measurement component, so that the center of the cross wire of the collimator coincides with the center of the cross reticle of the optical antenna;
judging whether the center of a cross wire in the first angle measuring component is superposed with the center of a cross reticle of the optical antenna or not by the first angle measuring component;
and if the center of the cross wire in the first angle measuring component is determined not to be superposed with the center of the cross reticle of the optical antenna, adjusting the inclination of the supporting tool of the optical antenna according to the measurement result of the first angle measuring component.
Optionally, the method further includes:
the cross reticle representing the optical incident optical axis is arranged on a secondary mirror reference surface in a lens barrel of the optical antenna;
the optical antenna is arranged on the supporting tool, and the supporting tool can adjust the inclination and the eccentricity of the optical antenna.
Optionally, the method further includes:
the plane mirror is a semi-reflecting and semi-transparent plane mirror carved with cross hairs, and is installed on the inner side of a light outlet of the optical antenna lens barrel through an adjusting tool, and the adjusting tool can realize the adjustment of the inclination and the eccentricity of the plane mirror.
Optionally, the method further includes:
the optical antenna system includes: the device comprises an optical antenna, a first angle measurement component, a second angle measurement component, a collimator, a plane mirror, a supporting tool and an adjusting tool.
The optical antenna includes: the lens barrel comprises a main lens assembly and a secondary lens assembly, wherein the main lens assembly and the secondary lens assembly are arranged in the lens barrel according to the inclination angle of a preset angle and a preset position.
In a second aspect, an embodiment of the present invention further provides an apparatus for extracting an optical axis of an outgoing beam of an optical antenna, where the apparatus includes:
the first determining unit is used for determining the relative positions of the cross wire in the collimator and the cross wire on the plane mirror based on the first angle measuring component after the collimator light source is started;
a first judging unit configured to judge whether the relative position determined by the first determining unit is greater than a preset distance threshold;
the first adjusting unit is used for adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position when the first judging unit determines that the relative position is larger than a preset distance threshold value, so that the relative position is smaller than or equal to the preset distance threshold value;
the second determining unit is used for determining the position of a light spot of the collimated light source based on the first angle measuring component after the collimator light source is turned off and the auto-collimated light source of the first angle measuring component is started;
a second judging unit, configured to judge whether the light spot position determined by the second determining unit is located at a cross-hair position on the plane mirror;
and the second adjusting unit is used for adjusting the inclination of the adjusting tool of the plane mirror according to the position of the collimated light source light spot when the second judging unit determines that the light spot position is not located at the center of the cross hair on the plane mirror, so that the light spot returns to the position of the cross hair on the plane mirror.
Optionally, the apparatus further comprises:
the starting unit is used for starting the second angle measuring component, the collimator light source and the first angle measuring component before the first determining unit determines the relative positions of the cross wire in the collimator and the cross wire on the plane mirror based on the first angle measuring component;
the third adjusting unit is used for adjusting the horizontal position of the collimator tube to enable the optical axis of the collimator tube to be coaxial with the optical axis of the second angle measuring assembly;
and the fourth adjusting unit is used for adjusting the optical axis of the first angle measuring component to be orthogonal to the optical axis reference of the second angle measuring component and to be equal in height with the optical axis of the second angle measuring component.
Optionally, the apparatus further comprises:
a third judging unit, configured to judge, by the second angle measurement component, whether a center of a cross wire of the collimator coincides with a center of a cross reticle of the optical antenna before the first determining unit determines, based on the first angle measurement component, a relative position of the cross wire in the collimator and a cross wire on the plane mirror, where a cross reticle representing an optical incident optical axis is installed in the optical antenna lens barrel, and a cross wire is generated when the parallel light beam passes through the cross reticle in the optical antenna lens barrel;
the fifth adjusting unit is used for adjusting the eccentricity of the adjusting and supporting tool of the optical antenna according to the measuring result of the second angle measuring component when the third judging unit determines that the center of the collimator tube cross wire is not overlapped with the center of the cross reticle of the optical antenna, so that the center of the collimator tube cross wire is overlapped with the center of the cross reticle of the optical antenna;
the fourth judging unit is used for judging whether the center of the cross wire in the first angle measuring assembly is superposed with the center of a cross reticle of the optical antenna or not by the first angle measuring assembly;
and the sixth adjusting unit is used for adjusting the inclination of the supporting tool of the optical antenna according to the measurement result of the first angle measuring assembly when the fourth judging unit determines that the center of the cross wire in the first angle measuring assembly does not coincide with the center of the cross reticle of the optical antenna.
Optionally, the cross reticle representing the optical incident optical axis is mounted on a reference plane of a secondary lens of a lens barrel of the optical antenna;
the optical antenna is arranged on the supporting tool, and the supporting tool can adjust the inclination and the eccentricity of the optical antenna.
Optionally, the plane mirror is a half-reflecting and half-transmitting plane mirror carved with cross-shaped wires, and is installed inside the light outlet of the optical antenna lens barrel through an adjusting tool, and the adjusting tool can realize adjustment of the inclination amount and the eccentricity amount of the plane mirror.
Optionally, the apparatus further comprises:
the optical antenna system includes: the device comprises an optical antenna, a first angle measurement component, a second angle measurement component, a collimator, a plane mirror, a supporting tool and an adjusting tool.
The optical antenna includes: the lens barrel comprises a main lens assembly and a secondary lens assembly, wherein the main lens assembly and the secondary lens assembly are arranged in the lens barrel according to the inclination angle of a preset angle and a preset position.
The method and the device for leading out the optical axis of the emergent light beam of the optical antenna provided by the embodiment of the invention determine the relative position of a cross wire in the parallel light pipe and a cross wire on a plane mirror based on a first angle measuring component, and adjust the eccentricity of an adjusting tool of the plane mirror according to the relative position to ensure that the relative position is less than or equal to the preset distance threshold; and determining the position of the light spot of the collimated light source based on the first angle measuring assembly, and adjusting the inclination of an adjusting tool of the plane mirror according to the position of the light spot of the collimated light source to enable the light spot to return to the position of the cross wire on the plane mirror. The invention leads the axis of the emergent optical axis of the optical antenna out of the plane mirror with the cross wire accurately, completes the assembly and adjustment work of the system of the optical antenna and realizes the satellite-borne laser communication.
The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and the embodiments of the present invention can be implemented according to the content of the description in order to make the technical means of the embodiments of the present invention more clearly understood, and the detailed description of the embodiments of the present invention is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the embodiments of the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a flowchart illustrating a method for extracting an optical axis of an outgoing beam of an optical antenna according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating another method for extracting an optical axis of an outgoing beam from an optical antenna according to the disclosed embodiment of the present invention;
FIG. 3 is a schematic diagram of an optical antenna system provided by an embodiment of the present invention;
FIG. 4 is a block diagram illustrating an apparatus for extracting an optical axis of an outgoing beam from an optical antenna according to an embodiment of the present disclosure;
fig. 5 is a block diagram illustrating another apparatus for extracting an optical axis of an outgoing beam from an optical antenna according to an embodiment of the disclosure.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the invention provides a method for leading out an optical axis of an emergent beam of an optical antenna, which comprises the following steps of:
101. after the collimator light source is started, the relative position of the cross wire in the collimator and the cross wire on the plane mirror is determined based on the first angle measurement component, and whether the relative position is larger than a preset distance threshold value or not is judged.
In practical application, the optical antenna disclosed in the embodiment of the invention is an important component of satellite-borne laser communication, the performance of the optical antenna can directly influence the implementation of the laser communication, and optical installation and debugging are completed by accurately leading out an optical beam optical axis of an emergent light beam of the optical antenna, so that the performance of the optical antenna is improved, and the implementation of the satellite-borne laser communication is completed.
In the embodiment disclosed by the invention, after all components of the optical antenna system are placed according to the inclination angle of the preset angle and the preset position, the collimator light source is started to be used as the incident light of the optical antenna. In the embodiment disclosed by the invention, the relative position of the cross wire in the collimator and the cross wire in the plane mirror is determined through the first angle measuring component, and whether the relative position is greater than the preset distance threshold value is judged so as to determine whether the optical axis of the emergent light beam of the optical antenna passes through the plane mirror and is intersected at the cross wire position of the plane mirror. The first angle measurement component is an angle measurement instrument capable of accurately measuring an inclination angle and a distance, and may include, but is not limited to, a laika theodolite in the embodiment disclosed in the present invention.
In the disclosed embodiment of the present invention, the first angle measurement assembly determines the relative position of the cross-hair in the parallel light pipe and the cross-hair on the plane mirror, which may be, but is not limited to, the following: a person observes the ocular through the first angle measurement assembly to determine and determine a relative position value; the photoelectric sensor is arranged in the optical antenna system, the parallel light pipe light beam and the first angle measurement component light beam form a corresponding light spot in a light spot image plane, a corresponding coordinate position is obtained, and a relative position value is calculated.
102. And if the relative position is determined to be larger than the preset distance threshold, adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position, so that the relative position is smaller than or equal to the preset distance threshold.
In the embodiment disclosed by the invention, a distance threshold needs to be preset to judge whether the adjustment tool of the plane mirror needs to be adjusted, the preset distance threshold is an experimental value and can be considered to be set, and in the specific setting, the preset distance threshold is not easy to be set too large, if the preset distance threshold is too large, such as 0.1 millimeter (mm), and the distance value is larger, the position of an emergent beam optical axis of the optical antenna is farther from a position of a cross wire in the plane mirror, so that the position error of the emergent beam optical axis of the optical antenna is larger, and the performance of the optical antenna can be greatly reduced; the too small that also is difficult to set up, such as 0.00001mm, guaranteed optical antenna's adjustment accuracy this moment, but can increase the degree of difficulty in the optical antenna debugging process simultaneously. In the embodiment of the present disclosure, the distance threshold may be set to be 0.0005mm, 0.0001mm, and the like, and it should be noted that, in order to ensure that the extraction of the optical axis of the emergent beam of the optical antenna is completed with high precision, the eccentricity of the plane mirror should be adjusted to make the cross-hair in the parallel light pipe coincide with the cross-hair on the plane mirror.
The manner of adjusting the adjusting tool in the embodiments disclosed in the present invention may include, but is not limited to, the following manners: according to the observed relative position, the adjustment of the adjusting tool is manually realized through the adjusting handle; the photoelectric sensor sends the obtained coordinate data to the adjusting device, and the adjusting device controls the adjusting tool to realize automatic adjustment.
103. After the collimator light source is turned off and the auto-collimation light source of the first angle measurement assembly is started, the light spot position of the collimation light source is determined based on the first angle measurement assembly, and whether the light spot position is located at the position of the cross hair on the plane mirror is judged.
The method comprises the steps of adjusting the eccentricity of a plane mirror in an optical antenna system to enable the optical axis of an emergent light beam of an optical antenna to pass through the plane mirror and intersect at the position of a cross wire of the plane mirror, then closing a collimator light source, starting a collimating light source of a first angle measuring assembly, and observing the position of a light spot of the collimating light source based on an eyepiece of the first angle measuring assembly so as to determine whether the optical axis of the emergent light beam of the optical antenna is perpendicular to the plane mirror.
104. And if the light spot position is determined not to be located at the center of the cross hair on the plane mirror, adjusting the inclination amount of an adjusting tool of the plane mirror according to the position of the collimated light source light spot, and enabling the light spot to return to the position of the cross hair on the plane mirror.
When the light spot position is determined not to be located at the central position of the cross wire on the plane mirror, the plane mirror is not perpendicular to the emergent light beam optical axis of the optical antenna at the moment, the light spot is returned to the cross wire position on the plane mirror by finely adjusting the inclination of the plane mirror, and the emergent light beam optical axis of the optical antenna is perpendicular to the plane mirror.
It should be noted that in the embodiment of the present disclosure, the adjustment of the eccentricity and the inclination of the plane mirror needs to be repeatedly checked and adjusted, and when the conditions described in step 102 and step 104 are simultaneously satisfied, that is, when the optical axis of the outgoing optical beam of the optical antenna perpendicularly intersects with the plane mirror, it indicates that the operation of extracting, installing and debugging the axis of the outgoing optical axis of the optical antenna is completed.
The method for leading out the optical axis of the emergent light beam of the optical antenna comprises the steps of determining the relative position of a cross wire in a parallel light pipe and a cross wire on a plane mirror based on a first angle measuring assembly, and adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position to enable the relative position to be smaller than or equal to a preset distance threshold value; and determining the position of the light spot of the collimated light source based on the first angle measuring assembly, and adjusting the inclination of an adjusting tool of the plane mirror according to the position of the light spot of the collimated light source to enable the light spot to return to the position of the cross wire on the plane mirror. The invention leads the axis of the emergent optical axis of the optical antenna out of the plane mirror with the cross wire accurately, completes the assembly and adjustment work of the system of the optical antenna and realizes the satellite-borne laser communication.
As a refinement and expansion of the above embodiments, in the embodiments disclosed in the present invention, before the optical axis of the outgoing light beam of the optical antenna is led out, after the ground level needs to be adjusted according to the second angle measurement component, the light beam of the collimator is adjusted to be coaxial with the light beam of the second angle measurement component, and the optical axis of the light beam of the first angle measurement component is adjusted to be orthogonal to the optical axis reference of the second angle measurement component and to be equal to the optical axis of the second angle measurement component. Then, by adjusting the inclination and the eccentricity of the optical antenna, the visual axis of the first angle measurement component is made to be coaxial with the optical axis of the outgoing beam of the optical antenna, so as to ensure the accuracy of the optical axis of the outgoing beam of the optical antenna, and to achieve the above functions, an embodiment of the present invention further provides a method for extracting the optical axis of the outgoing beam of the optical antenna, as shown in fig. 2, the method includes:
201. and starting the second angle measurement component, the collimator light source and the first angle measurement component, and adjusting the horizontal position of the collimator to enable the optical axis of the collimator to be coaxial with the optical axis of the second angle measurement component.
In a disclosed embodiment of the invention, an optical antenna system includes: fig. 3 shows a schematic diagram of an optical antenna system provided by an embodiment of the present invention, in which the lens assembly includes: primary mirror subassembly, secondary mirror subassembly. Before an optical axis of an emergent light beam of the optical antenna is led out, the optical antenna system needs to be preliminarily mounted and placed according to the inclination angle of a preset angle and a preset position, the placing positions of different components are checked and debugged, and high-precision placement is completed. In the embodiment disclosed by the invention, the geodetic level is measured by the second angle measurement component, and the position and the inclination of the collimator are adjusted according to the relative position of the optical axis of the collimator beam and the optical axis of the second angle measurement component, so that the optical axis of the collimator is coaxial with the optical axis of the second side key component, and the installation and the placement of the collimator are completed.
202. And adjusting the optical axis of the first angle measurement component to be orthogonal to the optical axis of the second angle measurement component in reference and to be equal in height to the optical axis of the second angle measurement component.
After the collimator is installed, the first angle measurement component light source is started, the direction and the length of the first angle measurement component light beam are adjusted, the optical axis of the first angle measurement component is orthogonal to the optical axis of the second angle measurement component in reference and is equal to the optical axis of the second angle measurement component in height, and the first angle measurement component is installed at the moment.
203. And judging whether the center of the cross wire of the collimator coincides with the center of a cross reticle of the optical antenna by the second angle measuring component, wherein the cross reticle representing an optical incident optical axis is installed in the optical antenna lens barrel, and the cross wire is generated when the parallel light beam penetrates through the cross reticle in the optical antenna lens barrel.
In a disclosed implementation, the optical antenna includes: the lens barrel comprises a main lens assembly and a secondary lens assembly, wherein the main lens assembly and the secondary lens assembly are arranged in the lens barrel according to the inclination angle of a preset angle and a preset position. The optical antenna is arranged on the supporting tool, and the supporting tool can realize the adjustment of the inclination and the eccentricity of the optical antenna.
204. And if the center of the cross wire of the collimator is determined not to coincide with the center of the cross reticle of the optical antenna, adjusting the eccentricity of the supporting tool of the optical antenna according to the measurement result of the second angle measurement component, so that the center of the cross wire of the collimator coincides with the center of the cross reticle of the optical antenna.
After the first angle measuring assembly, the second angle measuring assembly and the collimator are accurately installed and placed, a cross-shaped division plate capable of representing the incident optical axis of the optical antenna is installed on the reference surface of the optical antenna lens barrel secondary mirror. And determining whether the center of the cross wire of the collimator coincides with the center of the cross reticle of the optical antenna through the second angle measuring component, so as to adjust the position of the optical antenna.
205. And judging whether the center of the cross wire in the first angle measuring component is coincided with the center of a cross reticle of the optical antenna or not by the first angle measuring component.
206. And if the center of the cross wire in the first angle measuring component is determined not to be superposed with the center of the cross reticle of the optical antenna, adjusting the inclination of the supporting tool of the optical antenna according to the measurement result of the first angle measuring component.
After the position of the optical antenna is adjusted, the inclination of the optical antenna supporting tool is adjusted according to the observation result of the first angle measurement group angle, so that the center of the cross wire in the first angle measurement assembly is coincided with the center of the cross dividing plate of the optical antenna, and the accurate debugging of the position and the inclination of the optical antenna is completed.
It should be noted that in the embodiment disclosed in the present invention, when the adjustment of the position and the tilt amount of the optical antenna supporting tool needs to be repeatedly checked and adjusted, and when the condition that the center of the cross wire of the collimator and the center of the cross wire in the first angle measuring assembly are simultaneously overlapped with the center of the cross reticle of the optical antenna is satisfied, it can be shown that the installation and debugging work of the position and the tilt amount of the optical antenna is completed, and it can be shown that the visual axis of the first angle measuring assembly is coaxial with the optical axis of the emergent beam of the optical antenna.
207. After the collimator light source is started, the relative position of the cross wire in the collimator and the cross wire on the plane mirror is determined based on the first angle measurement component, and whether the relative position is larger than a preset distance threshold value or not is judged.
For the description of step 207, please refer to the detailed description of step 101, and the embodiments of the present invention are not described herein again.
It should be noted that, in the embodiments disclosed in the present invention, the plane mirror is a half-reflecting and half-transmitting plane mirror engraved with a cross, and the adjustment tool is installed inside the light exit of the optical antenna lens barrel, so that the adjustment tool can adjust the inclination amount and the eccentricity amount of the plane mirror.
208. And if the relative position is determined to be larger than the preset distance threshold, adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position, so that the relative position is smaller than or equal to the preset distance threshold.
For the description of step 208, please refer to the detailed description of step 102, and the embodiments of the present invention will not be described herein.
209. After the collimator light source is turned off and the auto-collimation light source of the first angle measurement assembly is started, the light spot position of the collimation light source is determined based on the first angle measurement assembly, and whether the light spot position is located at the position of the cross hair on the plane mirror is judged.
For the description of step 209, please refer to the detailed description of step 103, and the embodiments of the present invention will not be described herein.
210. If the light spot position is determined not to be located at the center of the cross hair on the plane mirror, adjusting the inclination amount of an adjusting tool of the plane mirror according to the position of the collimated light source light spot, and enabling the light spot to return to the position of the cross hair on the plane mirror
For the description of step 210, please refer to the detailed description of step 104, and the embodiments of the present invention will not be described herein.
In summary, after the positions of the optical antenna, the first angle measurement component, the second angle measurement component, and the collimator and the optical axis direction of the light beam are accurately adjusted, and the first angle measurement component and the optical axis of the emergent light beam of the optical antenna are coaxial, the optical axis of the emergent light beam of the optical antenna is led out to the small plane mirror engraved with the cross wire by installing the plane mirror in the optical antenna and adjusting the eccentricity and the inclination of the plane mirror, so that the assembly and adjustment work of the system of the optical antenna is completed, and the satellite-borne laser communication is realized.
As an implementation of the method shown in fig. 1, another embodiment of the disclosure further provides a device for extracting an optical axis of an outgoing beam of an optical antenna. The embodiment of the apparatus corresponds to the embodiment of the method, and for convenience of reading, details in the embodiment of the apparatus are not repeated one by one, but it should be clear that the apparatus in the embodiment can correspondingly implement all the contents in the embodiment of the method.
The embodiment of the present invention also provides a device for extracting an optical axis of an emergent beam of an optical antenna, as shown in fig. 4, including:
the first determining unit 31 is configured to determine, based on the first angle measuring component, a relative position between a cross wire in the collimator and a cross wire on the plane mirror after the collimator light source is started;
a first judging unit 32 configured to judge whether the relative position determined by the first determining unit 31 is greater than a preset distance threshold;
a first adjusting unit 33, configured to, when the first determining unit 32 determines that the relative position is greater than a preset distance threshold, adjust an eccentric amount of an adjusting tool of the plane mirror according to the relative position, so that the relative position is smaller than or equal to the preset distance threshold;
a second determining unit 34, configured to determine, based on the first angle measuring assembly, a position of a light spot of the collimated light source after the collimator light source is turned off and the first angle measuring assembly auto-collimated light source is started;
a second judging unit 35 configured to judge whether the spot position determined by the second determining unit 34 is located at a cross-hair position on the plane mirror;
a second adjusting unit 36, configured to adjust, when the second determining unit 35 determines that the light spot position is not located at the center of the cross hair on the plane mirror, an inclination amount of an adjusting tool of the plane mirror according to the position of the collimated light source light spot, so that the light spot returns to the cross hair position on the plane mirror.
The device for leading out the optical axis of the emergent light beam of the optical antenna, provided by the embodiment of the invention, is characterized in that the relative position of a cross wire in a parallel light pipe and a cross wire on a plane mirror is determined based on a first angle measuring component, and the eccentricity of an adjusting tool of the plane mirror is adjusted according to the relative position, so that the relative position is smaller than or equal to the preset distance threshold; and determining the position of the light spot of the collimated light source based on the first angle measuring assembly, and adjusting the inclination of an adjusting tool of the plane mirror according to the position of the light spot of the collimated light source to enable the light spot to return to the position of the cross wire on the plane mirror. The invention leads the axis of the emergent optical axis of the optical antenna out of the plane mirror with the cross wire accurately, completes the assembly and adjustment work of the system of the optical antenna and realizes the satellite-borne laser communication.
Further, as shown in fig. 5, the apparatus further includes:
an activation unit 37 configured to activate the second angle measurement unit, the collimator light source, and the first angle measurement unit before the first determination unit 31 determines the relative positions of the cross wire in the collimator and the cross wire on the plane mirror based on the first angle measurement unit;
a third adjusting unit 38, configured to adjust the horizontal position of the collimator, so that the optical axis of the collimator is coaxial with the optical axis of the second angle measuring assembly;
and a fourth adjusting unit 39, configured to adjust the optical axis of the first angle measuring unit to be orthogonal to the optical axis of the second angle measuring unit, and to have the same height as the optical axis of the second angle measuring unit.
Further, as shown in fig. 5, the apparatus further includes:
a third determining unit 310, configured to determine, by the second angle measuring component, whether a center of a cross wire of the collimator coincides with a center of a cross reticle of the optical antenna before the first determining unit 31 determines, based on the first angle measuring component, a relative position of the cross wire in the collimator and a cross wire on the plane mirror, where a cross reticle representing an optical incident optical axis is installed in the optical antenna barrel, and a cross wire is generated when the parallel light beam passes through the cross reticle in the optical antenna barrel;
a fifth adjusting unit 311, configured to adjust the eccentricity of the adjusting and supporting tool of the optical antenna according to the measurement result of the second angle measuring component when the third determining unit 310 determines that the center of the collimator cross wire does not coincide with the center of the cross reticle of the optical antenna, so that the center of the collimator cross wire coincides with the center of the cross reticle of the optical antenna;
a fourth judging unit 312, configured to judge, by the first angle measurement assembly, whether a cross center in the first angle measurement assembly coincides with a cross reticle center of the optical antenna;
a sixth adjusting unit 313, configured to adjust an inclination amount of the supporting tool of the optical antenna according to the measurement result of the first angle measuring unit when the fourth determining unit 312 determines that the center of the cross wire in the first angle measuring unit does not coincide with the center of the cross reticle of the optical antenna.
Since the apparatus for extracting an optical axis of an outgoing beam of an optical antenna described in this embodiment is an apparatus that can perform the method for extracting an optical axis of an outgoing beam of an optical antenna in this embodiment of the present invention, based on the method for extracting an optical axis of an outgoing beam of an optical antenna described in this embodiment of the present invention, a person skilled in the art can understand a specific implementation manner of the apparatus for extracting an optical axis of an outgoing beam of an optical antenna in this embodiment and various variations thereof, so how to implement the method for extracting an optical axis of an outgoing beam of an optical antenna by the apparatus for extracting an optical axis of an outgoing beam of an optical antenna in this embodiment of the present invention is not described. The device adopted by the person skilled in the art to implement the method for extracting the optical axis of the outgoing light beam of the optical antenna in the embodiment of the present invention is within the scope of the protection of the present application.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (12)
1. A method of extracting an optical axis of an outgoing beam from an optical antenna, comprising:
after a collimator light source is started, determining the relative position of a cross wire in the collimator and a cross wire on a plane mirror based on a first angle measurement component, and judging whether the relative position is greater than a preset distance threshold value;
if the relative position is determined to be larger than a preset distance threshold, adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position to enable the relative position to be smaller than or equal to the preset distance threshold;
after the collimator light source is turned off and the auto-collimation light source of the first angle measurement assembly is started, determining the light spot position of the collimation light source based on the first angle measurement assembly, and judging whether the light spot position is located at the position of the cross hair on the plane mirror;
and if the light spot position is determined not to be located at the center of the cross hair on the plane mirror, adjusting the inclination amount of an adjusting tool of the plane mirror according to the position of the collimated light source light spot, and enabling the light spot to return to the position of the cross hair on the plane mirror.
2. The method of claim 1, wherein prior to activating the collimator light source and determining the relative position of the cross-hair within the collimator and the cross-hair on the flat mirror by the first goniometric assembly, the method further comprises:
starting a second angle measurement component, the collimator light source and the first angle measurement component, and adjusting the horizontal position of the collimator to enable the optical axis of the collimator to be coaxial with the optical axis of the second angle measurement component;
and adjusting the optical axis of the first angle measurement component to be orthogonal to the optical axis of the second angle measurement component in reference and to be equal in height to the optical axis of the second angle measurement component.
3. The method of claim 2, wherein prior to activating the collimator light source and determining the relative position of the cross-hair within the collimator and the cross-hair on the flat mirror by the first goniometric assembly, the method further comprises:
judging whether the center of the cross wire of the collimator coincides with the center of a cross reticle of the optical antenna by the second angle measuring component, wherein the cross reticle representing an optical incident optical axis is installed in the optical antenna lens barrel, and the cross wire is generated when the parallel light beam penetrates through the cross reticle in the optical antenna lens barrel;
if the center of the cross wire of the collimator is determined not to coincide with the center of the cross reticle of the optical antenna, adjusting the eccentricity of a supporting tool of the optical antenna according to the measurement result of the second angle measurement component, so that the center of the cross wire of the collimator coincides with the center of the cross reticle of the optical antenna;
judging whether the center of a cross wire in the first angle measuring component is superposed with the center of a cross reticle of the optical antenna or not by the first angle measuring component;
and if the center of the cross wire in the first angle measuring component is determined not to be superposed with the center of the cross reticle of the optical antenna, adjusting the inclination of the supporting tool of the optical antenna according to the measurement result of the first angle measuring component.
4. The method of claim 3, further comprising:
the cross reticle representing the optical incident optical axis is arranged on a secondary mirror reference surface in a lens barrel of the optical antenna;
the optical antenna is arranged on the supporting tool, and the supporting tool can adjust the inclination and the eccentricity of the optical antenna.
5. The method of any one of claims 1 to 4, further comprising:
the plane mirror is a semi-reflecting and semi-transparent plane mirror carved with cross hairs, and is installed on the inner side of a light outlet of the optical antenna lens barrel through an adjusting tool, and the adjusting tool can realize the adjustment of the inclination and the eccentricity of the plane mirror.
6. The method of any one of claims 1 to 4, further comprising:
the optical antenna system includes: the device comprises an optical antenna, a first angle measurement component, a second angle measurement component, a collimator, a plane mirror, a support tool and an adjustment tool;
the optical antenna includes: the lens barrel comprises a main lens assembly and a secondary lens assembly, wherein the main lens assembly and the secondary lens assembly are arranged in the lens barrel according to the inclination angle of a preset angle and a preset position.
7. An apparatus for extracting an optical axis of an outgoing beam from an optical antenna, comprising:
the first determining unit is used for determining the relative positions of the cross wire in the collimator and the cross wire on the plane mirror based on the first angle measuring component after the collimator light source is started;
a first judging unit configured to judge whether the relative position determined by the first determining unit is greater than a preset distance threshold;
the first adjusting unit is used for adjusting the eccentricity of an adjusting tool of the plane mirror according to the relative position when the first judging unit determines that the relative position is larger than a preset distance threshold value, so that the relative position is smaller than or equal to the preset distance threshold value;
the second determining unit is used for determining the position of a light spot of the collimated light source based on the first angle measuring component after the collimator light source is turned off and the auto-collimated light source of the first angle measuring component is started;
a second judging unit, configured to judge whether the light spot position determined by the second determining unit is located at a cross-hair position on the plane mirror;
and the second adjusting unit is used for adjusting the inclination of the adjusting tool of the plane mirror according to the position of the collimated light source light spot when the second judging unit determines that the light spot position is not located at the center of the cross hair on the plane mirror, so that the light spot returns to the position of the cross hair on the plane mirror.
8. The apparatus of claim 7, further comprising:
the starting unit is used for starting the second angle measuring component, the collimator light source and the first angle measuring component before the first determining unit determines the relative positions of the cross wire in the collimator and the cross wire on the plane mirror based on the first angle measuring component;
the third adjusting unit is used for adjusting the horizontal position of the collimator tube to enable the optical axis of the collimator tube to be coaxial with the optical axis of the second angle measuring assembly;
and the fourth adjusting unit is used for adjusting the optical axis of the first angle measuring component to be orthogonal to the optical axis reference of the second angle measuring component and to be equal in height with the optical axis of the second angle measuring component.
9. The apparatus of claim 8, further comprising:
a third judging unit, configured to judge, by the second angle measurement component, whether a center of a cross wire of the collimator coincides with a center of a cross reticle of the optical antenna before the first determining unit determines, based on the first angle measurement component, a relative position of the cross wire in the collimator and a cross wire on the plane mirror, where a cross reticle representing an optical incident optical axis is installed in the optical antenna lens barrel, and a cross wire is generated when the parallel light beam passes through the cross reticle in the optical antenna lens barrel;
the fifth adjusting unit is used for adjusting the eccentricity of the adjusting and supporting tool of the optical antenna according to the measuring result of the second angle measuring component when the third judging unit determines that the center of the collimator tube cross wire is not overlapped with the center of the cross reticle of the optical antenna, so that the center of the collimator tube cross wire is overlapped with the center of the cross reticle of the optical antenna;
the fourth judging unit is used for judging whether the center of the cross wire in the first angle measuring assembly is superposed with the center of a cross reticle of the optical antenna or not by the first angle measuring assembly;
and the sixth adjusting unit is used for adjusting the inclination of the supporting tool of the optical antenna according to the measurement result of the first angle measuring assembly when the fourth judging unit determines that the center of the cross wire in the first angle measuring assembly does not coincide with the center of the cross reticle of the optical antenna.
10. The apparatus of claim 9,
the cross reticle representing the optical incident optical axis is arranged on the reference surface of the secondary lens of the lens cone of the optical antenna;
the optical antenna is arranged on the supporting tool, and the supporting tool can adjust the inclination and the eccentricity of the optical antenna.
11. The device according to any one of claims 7 to 10, wherein the plane mirror is a half-reflecting and half-transmitting plane mirror engraved with cross hairs, and the plane mirror is mounted inside a light outlet of the optical antenna lens barrel through an adjusting tool, and the adjusting tool can adjust the inclination and eccentricity of the plane mirror.
12. The apparatus of any one of claims 7 to 10, further comprising:
the optical antenna system includes: the device comprises an optical antenna, a first angle measurement component, a second angle measurement component, a collimator, a plane mirror, a support tool and an adjustment tool;
the optical antenna includes: the lens barrel comprises a main lens assembly and a secondary lens assembly, wherein the main lens assembly and the secondary lens assembly are arranged in the lens barrel according to the inclination angle of a preset angle and a preset position.
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