CN212905661U - Primary and secondary mirror supporting structure of large-caliber telescope - Google Patents
Primary and secondary mirror supporting structure of large-caliber telescope Download PDFInfo
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- CN212905661U CN212905661U CN202021595135.4U CN202021595135U CN212905661U CN 212905661 U CN212905661 U CN 212905661U CN 202021595135 U CN202021595135 U CN 202021595135U CN 212905661 U CN212905661 U CN 212905661U
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Abstract
The utility model relates to a primary and secondary mirror supporting structure of a large-caliber telescope, which comprises a secondary mirror assembly, a primary mirror assembly and a carbon fiber supporting assembly, wherein the secondary mirror assembly is provided with a light-passing ring, a secondary mirror seat, parts such as a secondary mirror, a base, a shading cylinder, parts such as a primary mirror and N carbon fiber supporting assemblies for connection; the light-passing ring adopts an integrated frame structure, and the precision can be very high without debugging before installation; the LED lamp is easier to install than a splicing type light passing ring, and a large amount of assembling and debugging time is saved; the triangular structure of the truss has high rigidity and is stable and pressure-resistant; because the mechanical degree of freedom is few, can be more convenient quick when the light path is adjusted.
Description
Technical Field
The utility model relates to a space optics remote sensing technical device field specifically is a heavy-calibre telescope primary and secondary mirror bearing structure.
Background
The large-aperture telescope lens generally adopts a reflection type optical system, for example, a beam of parallel light vertically irradiates on a reflection surface of a primary mirror, the reflection surface secondarily reflects on a secondary mirror, and the secondary mirror reflects the light to enter an image signal processing system. The reflection of the secondary mirror is greatly affected by the reflection surfaces of the primary mirror and the secondary mirror, so that the relative position requirement of the primary mirror and the secondary mirror is very high, and the light rays can be deviated due to the change of the positions of the reflection surfaces of the primary mirror and the secondary mirror. Since the size of the primary mirror is relatively large and is inconvenient to adjust, it is a common practice to adjust the secondary mirror with the primary mirror as a reference.
Based on the above consideration, a stable structure is needed between the primary mirror and the secondary mirror as a support; if the aperture ratio of the primary mirror is smaller, the primary mirror can be made into a cylindrical structure (such as a common civil astronomical telescope) only, and the cylindrical structure is convenient to process and not easy to deform; however, some telescopes with larger clear aperture are inconvenient to process and high in cost due to larger overall size, and have the following problems:
1. generally, when the main mirror is placed with the reflecting surface facing upwards, the main mirror is relatively stable under the condition of no external interference by the action of gravity, and cannot generate translational deformation and the like. Under special conditions, the supporting structure of the primary mirror and the secondary mirror needs to integrally move or rotate, so that the primary mirror and the secondary mirror are inclined, deformed, shaken and the like due to uneven stress;
2. because of being heavy-calibre equipment, primary and secondary mirror relative distance is far away, and a bit of slight rocking all probably leads to the relative position of primary and secondary mirror to change, and secondary mirror is in unsettled state mostly, receives the effect of gravity more obvious. Instability is therefore the most important factor affecting product quality.
SUMMERY OF THE UTILITY MODEL
In order to solve that primary and secondary mirror assembly braced frame rigidity is low, the installation accuracy is low, adjusts difficult scheduling problem, the utility model provides a large-caliber telescope primary and secondary mirror bearing structure to solve the defect that exists among the prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a primary mirror and secondary mirror supporting structure of a large-aperture telescope comprises a secondary mirror assembly, a primary mirror assembly and a carbon fiber supporting assembly, wherein the secondary mirror assembly comprises a light-transmitting ring with N reinforcing ribs, a secondary mirror base, a secondary mirror and a secondary mirror pressing ring; an adjusting mechanism for tightening one screw and tightening three screws, or an adjusting mechanism for tightening one screw and tightening three screws; the main mirror assembly comprises a central main mirror, a base, a main mirror gasket, a main mirror pressing block, a shading cylinder and a square block; the carbon fiber support assembly comprises N carbon fiber rod assemblies, and each carbon fiber rod assembly comprises 1 carbon fiber pipe, 1 upper connecting block and 1 lower connecting block;
furthermore, a lower connecting block of the carbon fiber supporting assembly is connected with the base, and an upper connecting block is connected with the light transmitting ring;
further, the light-passing ring and the base are made of metal materials;
furthermore, the center of the secondary mirror is tightly pressed by a ball end screw, and the vicinity of the center of the secondary mirror is tensioned by three screws (13);
furthermore, the center of the secondary mirror is tightened by a ball end screw, and the vicinity of the center of the secondary mirror is tightly propped by three screws;
furthermore, the non-reflecting surface of the primary mirror is supported by a gasket, and the excircle of the primary mirror is fixed by N primary mirror pressing blocks;
further, the upper connecting block and the lower connecting block are respectively fixed with the carbon fiber tube by glue;
further, the main mirror pressing block is solidified by glue after being locked by a screw; or a gasket is arranged between the main mirror pressing block and the main mirror and is a rubber pad;
further, the base and the light-transmitting ring are polygonal or circular;
the utility model has the advantages that: the truss structure is relatively low in cost in processing, assembly and material; the carbon fiber is used as a special fiber, has the special effects of high temperature resistance, friction resistance, high strength, high modulus, corrosion resistance, low density and the like, and is the most suitable material for truss structure support; the utility model discloses can effectively improve primary and secondary mirror assembly bearing structure's rigidity, the structure is more stable, and the assembly, the debugging is simpler.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a carbon fiber support assembly;
FIG. 3 is a schematic structural view of a primary mirror assembly;
FIG. 4 is a schematic view of a secondary mirror assembly;
the reference numerals are explained below:
1. a secondary mirror assembly; 2. a carbon fiber support assembly; 3. a primary mirror assembly; 4. an upper connecting block; 5. a carbon fiber tube; 6. a lower connecting block; 7. a square block; 8. a gasket; 9. a shading cylinder; 10. a primary mirror; 11. a main mirror pressing block; 12. a base; 13. a screw; 14. a light-passing ring; 15. a ball end screw; 16. a secondary lens base; 17. pressing a ring by the secondary mirror; 18. and a secondary mirror.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1-4, a primary and secondary mirror supporting structure of a large-aperture telescope comprises a secondary mirror assembly (1), a primary mirror assembly (3) and a carbon fiber supporting assembly (2), wherein the secondary mirror assembly (1) comprises a light-transmitting ring (14) with N reinforcing ribs, a secondary mirror base (16), a secondary mirror (18), a secondary mirror pressing ring (17), an adjusting mechanism for tightly jacking a ball end screw (15) and tensioning three screws (13), or an adjusting mechanism for tightly jacking one ball end screw (15) and three screws (13); the main mirror assembly comprises a central main mirror (10), a base (12), a gasket (8), a main mirror pressing block (11), a shading cylinder (9) and a square block (7); the carbon fiber support assembly comprises N carbon fiber rod assemblies (2), wherein each carbon fiber rod assembly (2) comprises 1 carbon fiber pipe (5), 1 upper connecting block (4) and 1 lower connecting block (6).
During the concrete implementation, compress tightly the primary mirror through the primary mirror briquetting, compress tightly the secondary mirror through secondary mirror clamping ring (17) and be fixed in on the secondary mirror seat, set up shading cylinder (9) in the primary mirror surface, two carbon fiber supporting component (2) and primary mirror bottom plate (12) form the triangle-shaped structure. The triangular structure has the characteristics of stability, firmness and pressure resistance because the corner structure formed by the triangular structure is unchanged
In a specific embodiment, a lower connecting block (6) of the carbon fiber supporting component is connected with a base (12), and an upper connecting block (4) is connected with a light-transmitting ring (14);
more specifically, the light-passing ring (14) and the base (12) are made of metal (not limited to aluminum, copper, iron and other alloys);
in another embodiment, the center of the secondary mirror is tightly pressed by a ball end screw (15), and the vicinity of the center of the secondary mirror is tightly pulled by three screws (13);
or the center of the secondary mirror is tightened by a ball end screw (15), and the vicinity of the center of the secondary mirror is tightly pressed by three screws (13);
during operation, two end points with the lower connecting blocks (6) can be simultaneously fixed on the light passing ring (14) through one screw to form a stable triangular structure; the triangular structure has the characteristics of stability, firmness and pressure resistance because the corner structure formed by the triangular structure is unchanged, and is widely applied to different fields of steel rails, cranes, tower cranes, steel bridges, house buildings and the like;
more specifically, the non-reflective surface of the primary mirror is supported by a washer (8), and the outer circle is fixed by N primary mirror pressing blocks (11).
In order to further enhance the stability, the upper connecting block (4) and the lower connecting block (6) are respectively fixed with the carbon fiber tube (5) by glue;
furthermore, the main mirror pressing block (11) is solidified by glue after being locked by a screw; or a gasket (8) is arranged between the main mirror pressing block (11) and the main mirror (10), and the gasket is a rubber pad.
Wherein, the base (12) and the light-transmitting ring (14) are polygonal or circular, but not limited to the two shapes; the light-passing ring (14) is processed by a processing center at one time, has high processing precision, and avoids the problems of low precision and difficult adjustment caused by splicing of a plurality of parts.
In certain embodiments, the removal of the gobo can also achieve the claimed technical effect.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. The utility model provides a primary and secondary mirror bearing structure of heavy-calibre telescope which characterized in that: the secondary mirror assembly comprises a light-transmitting ring with N reinforcing ribs, a secondary mirror seat, a secondary mirror and a secondary mirror pressing ring; an adjusting mechanism for tightening one screw and tightening three screws, or an adjusting mechanism for tightening one screw and tightening three screws; the main mirror assembly comprises a central main mirror, a base, a main mirror gasket, a main mirror pressing block, a shading cylinder and a square block; the carbon fiber supporting assembly comprises N carbon fiber rod assemblies, wherein each carbon fiber rod assembly comprises 1 carbon fiber pipe, 1 upper connecting block and 1 lower connecting block.
2. The primary and secondary mirror support structure of a large aperture telescope according to claim 1, wherein: the lower connecting block of the carbon fiber supporting component is connected with the base, and the upper connecting block is connected with the light-transmitting ring.
3. The primary and secondary mirror support structure of a large aperture telescope according to claim 2, wherein: the light-passing ring and the base are made of metal materials.
4. The primary and secondary mirror support structure of a large aperture telescope according to claim 3, wherein: the center of the secondary mirror is tightly pressed by a screw at the ball end, and the vicinity of the center of the secondary mirror is tightened by three screws.
5. The primary and secondary mirror support structure of a large aperture telescope according to claim 4, wherein: the center of the secondary mirror is tightened by a ball end screw, and the vicinity of the center of the secondary mirror is tightly propped by three screws.
6. The primary and secondary mirror support structure of a large aperture telescope according to claim 5, wherein: the non-reflection surface of the primary mirror is supported by a gasket, and the excircle of the primary mirror is fixed by N primary mirror pressing blocks.
7. The primary and secondary mirror support structure of a large aperture telescope according to claim 6, wherein: the upper connecting block and the lower connecting block are respectively fixed with the carbon fiber tubes by glue.
8. The primary and secondary mirror support structure of a large aperture telescope according to claim 7, wherein: the main mirror pressing block is solidified by glue after being locked by the screw; or a gasket is arranged between the main mirror pressing block and the main mirror and is a rubber pad.
9. The primary and secondary mirror support structure of a large aperture telescope according to claim 8, wherein: the base and the light-passing ring are polygonal or circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021595135.4U CN212905661U (en) | 2020-08-04 | 2020-08-04 | Primary and secondary mirror supporting structure of large-caliber telescope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021595135.4U CN212905661U (en) | 2020-08-04 | 2020-08-04 | Primary and secondary mirror supporting structure of large-caliber telescope |
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| CN212905661U true CN212905661U (en) | 2021-04-06 |
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| CN202021595135.4U Active CN212905661U (en) | 2020-08-04 | 2020-08-04 | Primary and secondary mirror supporting structure of large-caliber telescope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534437A (en) * | 2021-07-29 | 2021-10-22 | 中国科学院长春光学精密机械与物理研究所 | Ultra-light telescope system |
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2020
- 2020-08-04 CN CN202021595135.4U patent/CN212905661U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113534437A (en) * | 2021-07-29 | 2021-10-22 | 中国科学院长春光学精密机械与物理研究所 | Ultra-light telescope system |
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