CN111045186A - SIC reflector with supporting reference structure - Google Patents
SIC reflector with supporting reference structure Download PDFInfo
- Publication number
- CN111045186A CN111045186A CN201911397324.2A CN201911397324A CN111045186A CN 111045186 A CN111045186 A CN 111045186A CN 201911397324 A CN201911397324 A CN 201911397324A CN 111045186 A CN111045186 A CN 111045186A
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- mirror
- supporting
- main mirror
- sic
- supporting structure
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention provides a SIC reflector with a supporting reference structure, which comprises a main mirror and a main mirror supporting structure which are integrated, wherein the main mirror and the main mirror supporting structure are made of the same material, so that the main mirror and the main mirror supporting structure can have good thermal stability without adding a transition piece, the main mirror supporting structure simultaneously has an internal interface, an external interface and a detection interface, and the main mirror is also a reference plate and a main bearing plate of the whole camera while supporting the main mirror, and is a reference of the internal structure of all cameras. The invention solves the problem that the inner reflector of the existing reflective optical camera can not be completely matched with the linear expansion coefficient; the connecting piece of the existing reflection type optical camera reflector and the supporting structure thereof is reduced, the main mirror is supported as the reference of the whole camera, and when the camera is installed and adjusted, the reference relation between the main mirror and other parts is unified, so that the installation and adjustment of the whole camera are more efficient, unnecessary installation errors are omitted, the installation and adjustment precision of the system is improved, the installation and adjustment difficulty is reduced, and meanwhile, the production cost is reduced.
Description
Technical Field
The invention belongs to the technical field of space optics, and particularly relates to a SIC reflector with a supporting reference structure.
Background
The reflective optical camera has wide application in the fields of aerospace and ground tracking observation, has the characteristics of small volume, large caliber, long focal length and low distortion, and has high social and economic values. But the structure of the reflective optical camera has the defects of poor thermal stability, strict requirements on installation and adjustment precision, limitation on the machining precision of an installation surface, high sensitivity of introduced force stability and the like.
The stability of the entire reflective optical camera is primarily concentrated on the primary mirror and the primary mirror support structure. In view of the above problems of the reflective optical camera, a current general solution is: and connecting a flexible transition structure on the structural member, and connecting the flexible transition structure with the main mirror supporting structure after repairing and adjusting the flexible transition structure.
However, the linear expansion coefficients in the whole assembly cannot be completely matched, and local internal stress is generated when the external thermal environment changes, so that the mirror surface shape changes, and the imaging quality of the whole optical system is affected. Meanwhile, the number of connecting parts is large, unnecessary errors are accumulated, and in order to eliminate the accumulated errors, continuous repairing and grinding are needed to meet optical requirements during installation and adjustment, so that uncontrollable disturbance factors are indirectly brought to the production period, the production cost and the quality control of the whole camera. In the subsequent mirror surface optical processing, the flexible structure and the optical processing requirement are continuously matched, and the primary mirror supporting structure and the primary mirror are repeatedly disassembled and assembled, so that the workload is increased and the uncontrollable risk is introduced.
Disclosure of Invention
The invention aims to provide a SIC reflector with a supporting reference structure and high thermal and force stability, so as to overcome the defects that the reflection type optical camera inner reflector in the technical field can not be completely matched with a linear expansion coefficient, is complex to assemble and adjust, is low in assembling and adjusting precision and is high in production cost.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a from SIC speculum of taking support reference structure, includes primary mirror and primary mirror bearing structure, its characterized in that: the primary mirror and the primary mirror supporting structure are integrally formed and have the same linear expansion coefficient;
the front surface of the main mirror supporting structure is connected with the main mirror, the back surface of the main mirror supporting structure is provided with a plurality of external interfaces, a plurality of internal interfaces and a plurality of lightweight grooves, and the side surface of the main mirror supporting structure is also provided with a plurality of detection tool interfaces;
the back of the primary mirror is provided with a lightweight structure;
the primary mirror supporting structure is a mounting substrate and a primary bearing plate of the camera and is a reference of an internal structure of the camera.
Furthermore, the primary mirror and the primary mirror supporting structure are connected through a circular neck.
Further, the primary mirror support structure is a triangular plate having a diameter larger than that of the primary mirror.
Furthermore, the external interface and the internal interface are respectively arranged at three corners of the back surface of the triangular plate, and each corner is provided with one external interface and one internal interface.
Furthermore, a plurality of process holes are formed in the back face of the main mirror supporting structure and are uniformly distributed around the edge of the central hole in the back face of the main mirror supporting structure.
Further, the lightening grooves are triangular grooves.
Further, the detection tool interface is connected with the primary mirror supporting structure in an adhesive mode.
Further, the lightweight structure is a plurality of lightweight grooves formed by firing the SIC mirror blank.
Furthermore, the external interface and the main mirror supporting structure are in screw connection, and flexible transition grooves in two directions are formed in the external interface.
Furthermore, the primary mirror and the primary mirror supporting structure are made of SIC materials and have the same linear expansion coefficient.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a SIC reflector with a supporting reference structure, which solves the problem that the inner reflector of the existing reflective optical camera cannot be completely matched with a line expansion coefficient; the connecting piece of the existing reflection type optical camera reflector and the supporting structure thereof is reduced, the main mirror is supported as the reference of the whole camera, and when the camera is installed and adjusted, the reference relation between the main mirror and other parts is unified, so that the installation and adjustment of the whole camera are more efficient, unnecessary installation errors are omitted, the installation and adjustment precision of the system is improved, the installation and adjustment difficulty is reduced, and meanwhile, the production cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic structural view of a SIC mirror with a self-supporting reference structure;
FIG. 2 is a schematic view of another orientation of a SIC mirror with a self-supporting reference structure;
fig. 3 is an enlarged view of a portion of the flexible connection.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the SIC reflector with a supporting reference structure of the invention comprises a primary mirror 1 and a primary mirror supporting structure 2, wherein the primary mirror 1 and the primary mirror supporting structure 2 are integrally formed, and are designed as an integral body, and are manufactured and formed at one time, and the same SIC material has the same linear expansion coefficient, so that the SIC reflector has good thermal adaptability, and has good thermal stability for a temperature-sensitive reflective long-focus optical system, and meanwhile, the integral structure provided by the invention has good mechanical properties.
The front surface of the main mirror supporting structure 2 is connected with the main mirror, and when the main mirror is processed, the processing reference of the main mirror supporting structure 2 is the main mirror supporting structure, so that the main mirror reference, the connection reference and the detection reference are unified. The primary mirror supporting structure 2 is a triangular plate with the diameter larger than that of the primary mirror 1, so that the mechanical structure is reasonable, and the light weight rate is high.
The back of the primary mirror support structure 2 is provided with a plurality of external interfaces 3 and a plurality of internal interfaces 4. For example, the external interface 3 and the internal interface 4 are respectively arranged at three corners of the back surface of the triangular plate, and each corner is provided with one external interface and one internal interface. The external interface 3 is an external interface of the whole device, and the whole device can be connected to the corresponding carrying platform through the interface. The other structural members of the camera are connected to the inner interface 4, so that the primary mirror supporting structure 2 is the primary bearing force and the mounting base plate of the camera and is the reference of the internal structure of the camera, unnecessary reference transition links are reduced, accumulated errors are reduced, and the installation and adjustment difficulty is reduced.
The back surface of the main mirror support structure 2 is further provided with a plurality of lightening grooves 6, for example, 24 triangular grooves. The back of the primary mirror 1 is provided with a light-weight structure 9 which is formed by directly firing an SIC mirror blank during firing, and a plurality of light-weight triangular grooves are formed in the light-weight structure. Since the light weight is an important measurement index in aerospace products, the back surface of the main mirror support structure and the back surface of the main mirror are respectively provided with the light weight groove and the light weight structure, so that the mass can be reduced, and the specific rigidity of the system can be improved.
The side of primary mirror bearing structure 2 still sets up a plurality of detection frock interfaces 7, for example can be 3, need not to do the switching frock and can connect detection device lug connection on primary mirror bearing structure 2 with the unified benchmark of primary mirror 1, and it is high to mark the precision, and stable in structure.
In one embodiment of the present invention, the primary mirror 1 and the primary mirror support structure 2 are connected by a circular neck. This ring neck is connected, for the transition neck when the secondary sintering, also avoids simultaneously that large tracts of land contacts between primary mirror bearing structure 2 and primary mirror 1, causes the mechanical change of primary mirror bearing structure 2 to cause the influence to primary mirror 1. The diameter and length of the neck directly influence the front surface accuracy of the primary mirror. However, the numerical values of the diameter and the length are adjusted correspondingly according to the diameter of the primary mirror and the diameter of the supporting structure in practical application, and the specific numerical values are nonlinear. Compare whole structure, local specific stiffness descends, and the connection stress that receives on the primary mirror bearing structure 2 can not conduct on the mirror surface, has guaranteed the face type precision of mirror surface.
According to one embodiment of the invention, the back surface of the primary mirror support structure is provided with a plurality of process holes 8, for example, 24 process holes 8 are uniformly distributed around the edge of the central hole on the back surface of the primary mirror support structure 2, the primary mirror lightweight structure 2 can be cleaned after SIC sintering, and the lightweight rate of more than 88% is obtained while the stability is good.
According to one embodiment of the invention, the detection tool interface 7 is connected with the primary mirror supporting structure 2 in an adhesive manner, so that the primary mirror supporting structure 2 is used for supporting the primary mirror and is also used as a connecting, assembling, adjusting and detecting reference inside the whole camera, and the primary mirror support and the system substrate are unified.
According to one embodiment of the present invention, the external interface 3 is a flexible isolation structure, that is, a flexible transition groove 5 having 2 directions is provided on the structure, the flexible transition groove 5 is determined according to the surface type precision of the external mounting surface and the thermal environment, the external interface 3 and the primary mirror support structure 2 are connected by screws, and a high-flatness connection base surface is provided for the external. This over-flexibility can isolate force, thermal issues due to external connections.
According to one embodiment of the invention, the primary mirror 1 and the primary mirror support structure 2 are both made of SIC materials with high specific stiffness, have the same linear expansion coefficient, and are high in structural strength and stable in mechanics.
According to the invention, the primary mirror 1 and the primary mirror supporting structure 2 are of an integrated structure, the materials of the primary mirror 1 and the primary mirror supporting structure 2 are the same, so that the thermal stability can be good without adding a transition piece, the primary mirror supporting structure 2 is provided with an internal interface, an external interface and a detection interface, and the primary mirror supporting structure is also a reference plate and a main bearing plate of the whole camera while supporting the primary mirror, and is a reference of internal structures of all cameras.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A SIC reflector with a supporting reference structure comprises a main mirror (1) and a main mirror supporting structure (2), and is characterized in that: the primary mirror (1) and the primary mirror supporting structure (2) are integrally formed and have the same linear expansion coefficient;
the front surface of the main mirror supporting structure (2) is connected with the main mirror (1), the back surface of the main mirror supporting structure is provided with a plurality of external interfaces (3), a plurality of internal interfaces (4) and a plurality of light-weight grooves (6), and the side surface of the main mirror supporting structure is also provided with a plurality of detection tool interfaces (7); the back of the main mirror (1) is provided with a light-weight structure (9);
the primary mirror supporting structure (2) is a mounting substrate and a primary bearing plate of the camera and is a reference of an internal structure of the camera.
2. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the primary mirror (1) and the primary mirror supporting structure (2) are connected through a circular neck.
3. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the primary mirror supporting structure (2) is a triangular plate with the diameter larger than that of the primary mirror.
4. A SIC mirror with self-supporting reference structure according to claim 3, characterised in that: the external interface (3) and the internal interface (4) are respectively arranged at three corners of the back of the triangular plate, and each corner is provided with one external interface and one internal interface.
5. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the back of the main mirror supporting structure (2) is provided with a plurality of process holes (8), and the plurality of process holes (8) are uniformly distributed around the edge of the center hole in the back of the main mirror supporting structure (2).
6. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the light-weight groove (6) is a triangular groove.
7. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the detection tool interface (7) is connected with the primary mirror supporting structure (2) in an adhesive manner.
8. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the light-weight structure (9) is formed by firing an SIC mirror blank, and a plurality of light-weight triangular grooves are formed in the light-weight structure.
9. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the external interface (3) is in screw connection with the primary mirror supporting structure (2), and the external interface (3) is provided with flexible transition grooves (5) in two directions.
10. A SIC mirror with self-supporting reference structure according to claim 1, characterised in that: the primary mirror (1) and the primary mirror supporting structure (2) are made of SIC materials and have the same linear expansion coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911397324.2A CN111045186A (en) | 2019-12-30 | 2019-12-30 | SIC reflector with supporting reference structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911397324.2A CN111045186A (en) | 2019-12-30 | 2019-12-30 | SIC reflector with supporting reference structure |
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| CN111045186A true CN111045186A (en) | 2020-04-21 |
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| CN201911397324.2A Pending CN111045186A (en) | 2019-12-30 | 2019-12-30 | SIC reflector with supporting reference structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308644A (en) * | 2020-03-20 | 2020-06-19 | 季华实验室 | Silicon carbide reflector |
| CN112462484A (en) * | 2020-12-07 | 2021-03-09 | 中国科学院长春光学精密机械与物理研究所 | Flexible supporting structure of metal reflector |
| CN113589471A (en) * | 2021-06-30 | 2021-11-02 | 北京空间机电研究所 | Dark low temperature off-axis aspheric surface integral type aluminium speculum structure |
| CN113651618B (en) * | 2021-08-27 | 2022-07-05 | 西北工业大学 | Silicon carbide ceramic matrix composite reflector and preparation method and application thereof |
| CN114935808A (en) * | 2022-06-08 | 2022-08-23 | 中国科学院长春光学精密机械与物理研究所 | Be applied to flexible bearing structure of speculum that back single point supported |
| CN116579183A (en) * | 2023-06-27 | 2023-08-11 | 季华实验室 | Method and device for processing and analyzing reflector, electronic equipment and storage medium |
| CN118050893A (en) * | 2024-04-16 | 2024-05-17 | 季华实验室 | Light-weight design method, device and equipment for optical element |
-
2019
- 2019-12-30 CN CN201911397324.2A patent/CN111045186A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308644A (en) * | 2020-03-20 | 2020-06-19 | 季华实验室 | Silicon carbide reflector |
| CN112462484A (en) * | 2020-12-07 | 2021-03-09 | 中国科学院长春光学精密机械与物理研究所 | Flexible supporting structure of metal reflector |
| CN113589471A (en) * | 2021-06-30 | 2021-11-02 | 北京空间机电研究所 | Dark low temperature off-axis aspheric surface integral type aluminium speculum structure |
| CN113651618B (en) * | 2021-08-27 | 2022-07-05 | 西北工业大学 | Silicon carbide ceramic matrix composite reflector and preparation method and application thereof |
| CN114935808A (en) * | 2022-06-08 | 2022-08-23 | 中国科学院长春光学精密机械与物理研究所 | Be applied to flexible bearing structure of speculum that back single point supported |
| CN116579183A (en) * | 2023-06-27 | 2023-08-11 | 季华实验室 | Method and device for processing and analyzing reflector, electronic equipment and storage medium |
| CN116579183B (en) * | 2023-06-27 | 2024-04-05 | 季华实验室 | Method and device for processing and analyzing reflector, electronic equipment and storage medium |
| CN118050893A (en) * | 2024-04-16 | 2024-05-17 | 季华实验室 | Light-weight design method, device and equipment for optical element |
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