CN212320738U - Optical simulation system for earth navigation sensor inspection - Google Patents
Optical simulation system for earth navigation sensor inspection Download PDFInfo
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- CN212320738U CN212320738U CN202021565893.1U CN202021565893U CN212320738U CN 212320738 U CN212320738 U CN 212320738U CN 202021565893 U CN202021565893 U CN 202021565893U CN 212320738 U CN212320738 U CN 212320738U
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Abstract
The utility model belongs to the technical field of earth sensor inspection equipment, and discloses an optical simulation system for earth navigation sensor inspection, which comprises an adjusting base, wherein a working flat plate is arranged on the adjusting base, a virtual projection optical lens is supported on the working flat plate through a bracket, and a projection display mechanism which is fixed on the working flat plate and is used for displaying earth simulation images is coaxially connected with the tail end of the virtual projection optical lens; the adjusting base comprises a three-dimensional adjusting seat, a rotary table is arranged on the three-dimensional adjusting seat, a pitching adjusting seat is arranged on the rotary table, and the working flat plate is connected to the pitching adjusting seat; through first lens cone, second lens cone and third lens cone and inside lens overall arrangement setting, formed an optical simulation system, projection display mechanism provides the simulation image that has the earth surface picture, uses indexes such as this utility model can inspect earth sensor's working property and stability.
Description
Technical Field
The utility model belongs to the technical field of earth sensor check-out set, a special design is used for optical simulation system of earth navigation sensor inspection.
Background
With the development of the national aerospace industry, more and more optical simulators for specific targets are used, earth navigation sensors are developed to observe specific regions on the earth surface, and in order to test the functions of the sensors, an earth simulation device is required to be provided, for example, chinese patent literature, publication No. CN103712574A, discloses an earth simulation device for testing optical detectors, and the device places a light source in an earth model shell to simulate the earth, and the earth model shell is always half sphere transparent and is connected and driven by a multidimensional motion combination platform, so that the function of simulating the earth observation on different spherical orbits is realized; utilize the utility model discloses can the wide application in simulating various optical detector that are used for on satellite and spacecraft and survey the work of earth in order to verify the optical detector performance.
Chinese patent document, after granted publication CN106394944B, discloses a rotating earth simulator for an area array infrared earth sensor, which includes an earth infrared radiation simulation unit, an attitude simulation unit and a system control unit. The earth infrared radiation simulation unit simulates by adjusting the infrared radiation difference of the hot plate and the cold diaphragm; and the change of the track height is simulated by replacing cold diaphragms with different apertures; the attitude simulation unit drives the earth infrared radiation simulation unit to rotate through a stepping motor, and the change of an attitude angle is simulated; the system control unit controls the temperature difference of a cold plate and a hot plate of the earth infrared radiation simulation unit, the stepping motor of the attitude simulation unit and the zero switch through an engineering computer and an electric cabinet. Therefore, the testing and calibration of the infrared earth sensor on the ground after the star is installed are realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an optical simulation system for the inspection of the earth navigation sensor again on the basis of the prior art, providing a simulation image with an earth surface picture for the earth navigation sensor, and inspecting the indexes of the earth navigation sensor such as working performance, stability and the like; the technical scheme adopted for achieving the purpose is as follows:
an optical simulation system for earth navigation sensor inspection comprises an adjusting base, wherein a working flat plate is arranged on the adjusting base, a virtual projection optical lens is supported on the working flat plate through a support, and a projection display mechanism which is fixed on the working flat plate and used for displaying earth simulation images is coaxially connected to the tail end of the virtual projection optical lens; the adjusting base comprises a three-dimensional adjusting seat, a rotary table is arranged on the three-dimensional adjusting seat, a pitching adjusting seat is arranged on the rotary table, and the working flat plate is connected to the pitching adjusting seat.
Preferably, the virtual projection optical lens sequentially comprises a first lens barrel, a second lens barrel and a third lens barrel which are coaxially arranged from the front end to the tail end, the front end of the second lens barrel is in threaded connection with the tail end of the first lens barrel, the front end of the third lens barrel is in threaded connection with the tail end of the second lens barrel, a plane lens is installed in the front end of the first lens barrel, a front convex lens and a double-concave lens are installed in the front end of the second lens barrel, the front convex lens is located on the front side of the double-concave lens, a front convex lens column is installed in the front end of the third lens barrel, a front convex crescent lens is installed in the tail end of the third lens barrel, and the plane lens, the front convex lens, the double-concave lens, the front convex lens column and the front convex crescent lens are coaxially arranged.
Preferably, the central thickness of the planar lens is 12mm, and the central distance between the planar lens and the front convex lens is 3.14 mm;
the center thickness of the front convex lens is 12mm, and the center interval between the front convex lens and the double concave lens is 98.12 mm;
the center thickness of the biconcave lens is 12mm, and the center interval between the biconcave lens and the front convex lens column is 105.79 mm;
the center thickness of the front convex lens column is 12mm, and the center interval between the front convex lens column and the front convex crescent lens is 22.85 mm;
the central thickness of the front convex crescent lens is 12mm, and the distance between the front convex crescent lens and the center of the projection display mechanism is 172.81 mm.
Preferably, a first pressing ring for fixing the planar lens is installed in the front end of the first lens barrel, a second pressing ring for fixing the front convex lens is installed in the front end of the second lens barrel, a third pressing ring for fixing the front convex lens column is installed in the front end of the third lens barrel, and a fourth pressing ring for fixing the front convex crescent lens is installed in the tail end of the third lens barrel.
Preferably, a spacer ring for fine-tuning the interval between the front convex lens and the biconcave lens is provided between the front convex lens and the biconcave lens.
Preferably, when the allowable range of the axial thermal deformation of the mounting position of the baffle ring cannot meet the requirement even if the baffle ring is made of the replaceable material, the special-shaped baffle ring is adopted; the special-shaped baffle ring comprises a ring body, and a stress ring groove or a plurality of stress arc groove sections are arranged on the outer surface of the ring body in a circumferential direction.
Preferably, the projection display mechanism comprises a housing device, a DMD imaging device is fixed in the housing device, a light exit channel for exiting image light of the DMD imaging device is formed in the housing device, the tail end of the third lens barrel is in threaded connection with the housing device and is coaxially arranged with the light exit channel, and the DMD imaging device projects the earth simulation image in the virtual projection optical lens.
Preferably, the light channel is provided with a light incidence channel which is obliquely arranged, and an adaptive light source is installed at the port of the light incidence channel.
The utility model discloses the beneficial effect who has does: through first lens cone, second lens cone and third lens cone and inside lens overall arrangement setting, formed an optical simulation system, projection display mechanism provides the simulation image that has the earth surface picture, uses indexes such as this utility model can inspect earth sensor's working property and stability.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a virtual projection optical lens;
fig. 3 is a schematic cross-sectional view of a projection display mechanism.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model comprises an adjusting base 1, a working plate 3 is installed on the adjusting base 1, a virtual projection optical lens 4 is supported on the working plate 3 through a bracket 2, and a projection display mechanism 5 which is fixed on the working plate 3 and is used for displaying the earth simulation image is coaxially connected with the tail end of the virtual projection optical lens 4; the adjusting base 1 comprises a three-dimensional adjusting seat, a rotary table is arranged on the three-dimensional adjusting seat, a pitching adjusting seat is arranged on the rotary table, and the working flat plate is connected to the pitching adjusting seat.
As shown in fig. 2, the virtual projection optical lens 4 sequentially includes a first lens barrel 41, a second lens barrel 43, and a third lens barrel 44 coaxially arranged from the front end to the tail end, the front end of the second lens barrel 43 is screwed into the tail end of the first lens barrel 41, the front end of the third lens barrel 44 is screwed into the tail end of the second lens barrel 43, a planar lens 414 is installed in the front end of the first lens barrel 41, a front convex lens 410 and a biconcave lens 49 are installed in the front end of the second lens barrel 43, the front convex lens 410 is located at the front side of the biconcave lens 49, a front convex lens column 47 is installed in the front end of the third lens barrel 44, a front convex crescent lens 45 is installed in the tail end of the third lens barrel 44, and the planar lens 414, the front convex lens 410, the biconcave lens 49, the front convex lens column 47, and the front convex crescent lens 45 are coaxially arranged.
Specifically, the central thickness of the planar lens 414 is 12mm, and the central distance between the planar lens 414 and the front convex lens 410 is 3.14 mm;
the central thickness of the front convex lens 410 is 12mm, and the central interval between the front convex lens 410 and the double concave lens 49 is 98.12 mm;
the central thickness of the biconcave lens 49 is 12mm, and the central interval between the biconcave lens 49 and the front convex lens column 47 is 105.79 mm;
the central thickness of the front convex lens column 47 is 12mm, and the central interval between the front convex lens column 47 and the front convex crescent lens 45 is 22.85 mm;
the central thickness of the front convex crescent lens 45 is 12mm, and the central interval between the front convex crescent lens 45 and the projection display mechanism 5 is 172.81 mm.
A first pressing ring 413 for fixing the flat lens 414 is mounted in the front end of the first barrel 41, a second pressing ring 412 for fixing the front convex lens 410 is mounted in the front end of the second barrel 43, a third pressing ring 48 for fixing the front convex lens column 47 is mounted in the front end of the third barrel 44, and a fourth pressing ring 46 for fixing the front convex crescent lens 45 is mounted in the rear end of the third barrel 44.
Meanwhile, a blocking ring 42 for finely adjusting the interval between the front convex lens 410 and the double-concave lens 49 is arranged between the front convex lens 410 and the double-concave lens 49, and when the axial thermal deformation allowable range of the mounting position of the blocking ring 42 cannot meet the requirement even if the blocking ring 42 is made of a replaceable material, a special-shaped blocking ring is adopted; the special-shaped baffle ring comprises a ring body, and a stress ring groove or a plurality of stress arc groove sections are arranged on the outer surface of the ring body in a circumferential direction.
As shown in fig. 3, the projection display mechanism 5 includes a housing device 53, a DMD imaging device 54 is fixed in the housing device 53, a light exit channel 51 for exiting image light of the DMD imaging device 54 is opened on the housing device 53, the tail end of the third lens barrel 44 is screwed on the housing device 53 and is coaxially arranged with the light exit channel 51, and the DMD imaging device 54 projects the earth simulation image in the virtual projection optical lens 4. The light path 51 is provided with a light incident path 52 arranged obliquely, and an adaptive light source is arranged at the port of the light incident path 52.
The utility model discloses at the during operation, DMD image device 54 loops through and provides dynamic, lifelike, the infinitely distant target image down of equivalence after third lens cone 44, second lens cone 43 and first lens cone 41, for the earth navigation sensor provides the simulation image that has the earth surface picture, can inspect the index such as working property and the stability of earth navigation sensor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. An optical simulation system for testing an earth navigation sensor is characterized by comprising an adjusting base, wherein a working flat plate is arranged on the adjusting base, a virtual projection optical lens is supported on the working flat plate through a support, and the tail end of the virtual projection optical lens is coaxially connected with a projection display mechanism which is fixed on the working flat plate and used for displaying an earth simulation image; the adjusting base comprises a three-dimensional adjusting seat, a rotary table is arranged on the three-dimensional adjusting seat, a pitching adjusting seat is arranged on the rotary table, and the working flat plate is connected to the pitching adjusting seat.
2. The optical simulation system for the earth navigation sensor inspection according to claim 1, wherein the virtual projection optical lens comprises a first lens barrel, a second lens barrel and a third lens barrel which are coaxially arranged in sequence from the front end to the tail end, the front end of the second lens barrel is screwed into the tail end of the first lens barrel, the front end of the third lens barrel is screwed into the tail end of the second lens barrel, a planar lens is installed in the front end of the first lens barrel, a front convex lens and a biconcave lens are installed in the front end of the second lens barrel, the front convex lens is located at the front side of the biconcave lens, a front convex lens column is installed in the front end of the third lens barrel, a front convex crescent lens is installed in the tail end of the third lens barrel, and the planar lens, the front convex lens, the biconcave lens, the front convex lens column and the front convex crescent lens are coaxially arranged.
3. The optical simulation system for earth navigation sensor inspection according to claim 2,
the central thickness of the planar lens is 15mm, and the central distance between the planar lens and the front convex lens is 5.44 mm;
the center thickness of the front convex lens is 15mm, and the center interval between the front convex lens and the double concave lens is 102.6 mm;
the center thickness of the biconcave lens is 15mm, and the center interval between the biconcave lens and the front convex lens column is 110.79 mm;
the center thickness of the front convex lens column is 15mm, and the center interval between the front convex lens column and the front convex crescent lens is 20.45 mm;
the central thickness of the front convex crescent lens is 15mm, and the distance between the front convex crescent lens and the center of the projection display mechanism is 185.93 mm.
4. The optical simulation system for earth navigation sensor inspection according to claim 3, wherein a first pressing ring for fixing the planar lens is installed in the front end of the first barrel, a second pressing ring for fixing the front convex lens is installed in the front end of the second barrel, a third pressing ring for fixing the front convex lens column is installed in the front end of the third barrel, and a fourth pressing ring for fixing the front convex crescent lens is installed in the rear end of the third barrel.
5. The optical simulation system for earth navigation sensor inspection according to claim 4, wherein a spacer ring for fine-tuning the spacing between the front convex lens and the biconcave lens is provided between the front convex lens and the biconcave lens.
6. The optical simulation system for the earth navigation sensor inspection according to claim 5, wherein when the allowable range of the axial thermal deformation of the mounting position of the retainer ring cannot meet the requirement if the retainer ring is made by replacing the material, a special-shaped retainer ring is adopted; the special-shaped baffle ring comprises a ring body, and a stress ring groove or a plurality of stress arc groove sections are arranged on the outer surface of the ring body in a circumferential direction.
7. The optical simulation system for the earth navigation sensor inspection according to claim 4, wherein the projection display mechanism includes a housing device, a DMD imaging device is fixed in the housing device, a light exit channel for exiting the image light of the DMD imaging device is opened on the housing device, the tail end of the third lens barrel is screwed on the housing device and is coaxially arranged with the light exit channel, and the DMD imaging device projects the earth simulation image in the virtual projection optical lens.
8. The optical simulation system for the inspection of the earth navigation sensor according to claim 6, wherein the light path is provided with a light incident path which is obliquely arranged, and an adaptive light source is installed at the port of the light incident path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021565893.1U CN212320738U (en) | 2020-07-31 | 2020-07-31 | Optical simulation system for earth navigation sensor inspection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021565893.1U CN212320738U (en) | 2020-07-31 | 2020-07-31 | Optical simulation system for earth navigation sensor inspection |
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| CN212320738U true CN212320738U (en) | 2021-01-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707293A (en) * | 2020-07-31 | 2020-09-25 | 郑州迈控光电科技有限公司 | Optical simulation system for earth navigation sensor inspection |
| CN114633906A (en) * | 2022-04-12 | 2022-06-17 | 中国科学院光电技术研究所 | Ultraviolet dynamic earth simulator |
-
2020
- 2020-07-31 CN CN202021565893.1U patent/CN212320738U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111707293A (en) * | 2020-07-31 | 2020-09-25 | 郑州迈控光电科技有限公司 | Optical simulation system for earth navigation sensor inspection |
| CN114633906A (en) * | 2022-04-12 | 2022-06-17 | 中国科学院光电技术研究所 | Ultraviolet dynamic earth simulator |
| CN114633906B (en) * | 2022-04-12 | 2023-12-22 | 中国科学院光电技术研究所 | Ultraviolet dynamic earth simulator |
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