CN116699790A - Space remote sensing camera based on elastic average principle center support main mirror - Google Patents
Space remote sensing camera based on elastic average principle center support main mirror Download PDFInfo
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- CN116699790A CN116699790A CN202310973188.7A CN202310973188A CN116699790A CN 116699790 A CN116699790 A CN 116699790A CN 202310973188 A CN202310973188 A CN 202310973188A CN 116699790 A CN116699790 A CN 116699790A
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- 239000000758 substrate Substances 0.000 claims abstract description 64
- 239000011521 glass Substances 0.000 claims abstract description 10
- 229910001374 Invar Inorganic materials 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 18
- 238000012937 correction Methods 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 238000012935 Averaging Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 230000008646 thermal stress Effects 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 4
- 239000004917 carbon fiber Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002241 glass-ceramic Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000006112 glass ceramic composition Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
Classifications
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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
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/028—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
-
- 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
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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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
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
A space remote sensing camera based on elastic average principle center support main mirror relates to the space remote sensing field, the remote sensing camera includes main mirror assembly; the support leg assembly is connected with the lower end of the main mirror assembly; the lower end of the supporting leg component is connected with the whole star; a focal plane assembly mounted at the center of the main mirror assembly; the correcting mirror component is arranged at the lower end of the main mirror component; a truss assembly mounted on an upper end of a side surface of the main mirror assembly; a secondary mirror assembly mounted on the truss assembly; a light shield assembly mounted to an outer surface of the truss assembly; the main mirror assembly includes a main mirror substrate, a prism installed at a side of the main mirror substrate, a main mirror support installed on the main mirror substrate, and a main mirror installed on the main mirror support. The main mirror is microcrystalline glass, the main mirror is supported as invar, the thermal expansion coefficients of the invar and the microcrystalline glass are consistent through the thermal stability matching design, the influence on the surface shape of the main mirror caused by the introduction of thermal stress due to the change of the environmental temperature is avoided, the temperature fluctuation adaptability of the main mirror is improved, and the imaging quality of the remote sensing camera is ensured.
Description
Technical Field
The invention relates to the technical field of space remote sensing, in particular to a space remote sensing camera based on an elastic average principle center support main mirror.
Background
A space remote sensing camera is a sensor mounted on a satellite for acquiring information of an earth target. With the continuous development of space remote sensing technology, the requirement of the space remote sensing camera on the ground resolution is also continuously improved. Currently, space remote sensing cameras have been widely used in numerous fields such as resource investigation, environmental monitoring, atmospheric and marine observations, earth radiometry, astronomical observations, and military.
The space remote sensing camera is sensitive to environmental factors such as force, heat and the like, and particularly, the main mirror structure is poor in heat stability, the main mirror structure can be thermally deformed when the temperature changes, and the generated thermal stress can influence the imaging quality of the space remote sensing camera. The glass ceramics are optical materials commonly used for the main mirror of the space remote sensing camera, have low expansion coefficient and good thermal stability, can effectively reduce the influence of self thermal deformation, and have mature processing technology, low cost and short period. However, the glass ceramic material has low specific stiffness, and the conventional space remote sensing camera design and processing technology generally has the problem of low light weight degree of the glass ceramic main mirror.
Disclosure of Invention
The invention aims to provide a space remote sensing camera based on an elastic average principle and with a central support main mirror, so as to solve the problem of low light weight of a glass ceramic main mirror in the existing space remote sensing camera.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention discloses a space remote sensing camera based on an elastic average principle center support main mirror, which comprises the following components:
a primary mirror assembly, the primary mirror assembly comprising: the lens comprises a main lens substrate, a prism arranged on the side surface of the main lens substrate, a main lens support arranged on the main lens substrate and a main lens arranged on the main lens support; the main mirror is made of microcrystalline glass material, and the main mirror support is made of invar steel material;
the support leg assembly is connected with the lower end of the main mirror assembly; the lower end of the supporting leg component is connected with the whole star;
a focal plane assembly mounted at the center of the main mirror assembly;
the correcting mirror component is arranged at the lower end of the main mirror component;
a truss assembly mounted on an upper end of a side surface of the main mirror assembly;
a secondary mirror assembly mounted on the truss assembly;
and the light shield assembly is arranged on the outer surface of the truss assembly.
Further, the primary mirror includes: the device comprises a first mirror surface, a detection edge arranged on the side surface of the first mirror surface, a light transmission hole arranged in the center of the first mirror surface, a first reinforcing rib and a first light weight hole which are all arranged on the back of the first mirror surface, and a side edge arranged on the side surface of the first reinforcing rib;
the primary mirror support includes: the supporting table is characterized in that the outer contour surface of the supporting table is adhered to the light-passing hole in the center of the first mirror surface, the second reinforcing rib is connected with the inner contour surface of the supporting table through a hinge, the hinge rotating shaft is arranged along the optical axis direction, the mounting base surface is connected with the supporting table through an S-shaped hinge, the first mounting hole is formed in the mounting base surface, the third reinforcing rib is mounted on the supporting table, and the second light-weight hole is formed in the third reinforcing rib.
Further, the main mirror substrate includes: the main mirror comprises a main mirror substrate, a truss mounting hole, a support mounting hole, a prism mounting hole, a support leg mounting hole, a third light weight hole, a focal plane assembly mounting hole and a correction mirror assembly mounting hole, wherein the truss mounting hole and the support mounting hole are formed in the upper end face of the main mirror substrate, the prism mounting hole is formed in the side face of the main mirror substrate, the support leg mounting hole and the third light weight hole are formed in the lower end face of the main mirror substrate, and the fourth reinforcing rib is arranged on the lower end face of the main mirror substrate.
Further, the leg assembly includes:
the support leg is provided with a mounting surface on the upper end surface, a fifth reinforcing rib and a fourth light weight hole are arranged on the side surface of the support leg, and a first flange is arranged on the lower end surface of the support leg;
a first heat insulating pad mounted on the mounting surface of the leg;
the mounting surface of the upper end surface of the supporting leg is connected with the main mirror base plate through a first heat insulation pad;
the lower end face of the supporting leg is connected with the whole star through a first flange.
Further, the focal plane assembly includes:
a frame;
the second heat insulation pad is arranged on the upper end face of the frame, and the upper end face of the frame is connected with the main mirror substrate through the second heat insulation pad;
a focusing mechanism mounted on the lower end surface of the frame;
and the focusing mechanism pushes the processing circuit and the detector to move along the optical axis.
Further, the correcting mirror assembly includes:
a lens barrel;
the first gasket is arranged on the lens barrel, and the lens barrel is connected with the main lens base plate through the first gasket;
the first light shielding cover is arranged at the upper end of the lens cone, and a first light blocking ring is arranged on the inner wall of the first light shielding cover;
a plurality of lenses mounted inside the lens barrel;
the lens is fixed in the lens cone through the lens seat and the pressing ring.
Further, the truss assembly includes:
a truss ring mounted on the primary mirror substrate;
three light shield embedded parts which are uniformly arranged on the truss ring;
three truss rods which are arranged on the three light shield embedded parts in a one-to-one correspondence manner;
and secondary mirror embedded parts arranged on the upper surfaces of the three truss rods.
Further, the secondary mirror assembly includes:
a sub-mirror substrate;
the secondary mirror substrate is connected with the secondary mirror embedded part through the second gasket;
a sub-mirror bonded to the sub-mirror substrate;
and the second light shield and the cover plate are both arranged on the upper end surface of the secondary mirror substrate.
Further, the secondary mirror back is equipped with fifth lightweight hole and inclined rib, secondary mirror center is equipped with the bonding hole, the second mirror face is located the terminal surface under the secondary mirror, be equipped with the bonding face in the middle of the secondary mirror base plate, the bonding face outside distributes and is equipped with the arc hinge, the arc hinge outside distributes and is equipped with sixth strengthening rib and sixth lightweight hole, be equipped with the second mounting hole on the sixth strengthening rib.
Further, the light shield assembly includes:
the inner wall of the upper light shield is provided with a second light blocking ring;
a lower light shield connected with the lower end of the upper light shield;
the upper fixed seat is arranged on the outer wall of the upper light shield, and the upper light shield is connected with the whole star through the upper fixed seat;
the lower fixing seat is arranged on the outer wall of the lower light shield, and the lower light shield is connected with the light shield embedded part through the lower fixing seat.
The beneficial effects of the invention are as follows:
the invention relates to a space remote sensing camera based on an elastic average principle center support main mirror, which mainly comprises the following components: the device comprises a main mirror assembly, a supporting leg assembly, a focal plane assembly, a correction mirror assembly, a secondary mirror assembly, a light shield assembly and a truss assembly; the landing leg subassembly upper end is connected with the main mirror subassembly, and landing leg subassembly lower extreme is connected with whole star, and the burnt face subassembly is installed in main mirror subassembly lower extreme, and the correction mirror subassembly is installed at main mirror subassembly center, and the truss subassembly is installed in main mirror subassembly side surface upper end, and the secondary mirror subassembly is installed on the truss subassembly, and the lens hood subassembly is installed at truss subassembly surface. Wherein, the primary mirror subassembly includes: the mirror comprises a main mirror substrate, a prism arranged on the side surface of the main mirror substrate, a main mirror support arranged on the main mirror substrate and a main mirror arranged on the main mirror support.
The invention adopts microcrystalline glass material as the manufacturing material of the main mirror, relaxes the rigidity constraint of the main mirror body, carries out high-light design on the main mirror body, and adopts invar steel material as the manufacturing material of the main mirror support to carry out thermal stability matching design. Through the design of thermal stability matching, the thermal expansion coefficient of the invar steel material can be consistent with that of the microcrystalline glass material, so that good thermal stability matching is realized, and the influence on the surface shape of the main mirror caused by thermal stress introduced by environmental temperature change is avoided.
According to the invention, the main mirror adopts a high-light-weight microcrystalline glass design, and adopts a central supporting scheme which is thermally matched with the main mirror, so that the temperature fluctuation adaptability of the main mirror is improved, and the imaging quality of the space remote sensing camera is ensured.
Drawings
Fig. 1 is a schematic structural diagram of a spatial remote sensing camera based on an elastic average principle center support primary mirror of the present invention.
Fig. 2 is a schematic structural view of the main mirror assembly.
Fig. 3 is a schematic structural view of the main mirror.
Fig. 4 is a schematic structural view of the upper end surface of the main mirror support.
Fig. 5 is a schematic structural view of the lower end surface of the main mirror support.
Fig. 6 is a schematic structural view of the upper end surface of the main mirror substrate.
Fig. 7 is a schematic view of the structure of the lower end surface of the main mirror substrate.
Fig. 8 is a schematic structural view of the leg.
FIG. 9 is a schematic view of a focal plane assembly.
FIG. 10 is a schematic diagram of the structure of the corrector mirror assembly.
FIG. 11 is a schematic structural view of a secondary mirror assembly.
Fig. 12 is a schematic structural view of the secondary mirror.
Fig. 13 is a schematic structural view of a substrate.
Fig. 14 is a schematic structural view of a light shield assembly.
Fig. 15 is a schematic view of the structure of the truss assembly.
In the figure, 1, a main mirror assembly, 11, a main mirror, 111, a first mirror, 112, a detection side, 113, a first reinforcing rib, 114, a first lightening hole, 115, a side, 116, a light passing hole, 12, a main mirror support, 121, a second reinforcing rib, 122, a support table, 123, a hinge, 124, a mounting base surface, 125, a first mounting hole, 126, a second lightening hole, 127, a third reinforcing rib, 128, an S-shaped hinge, 13, a main mirror substrate, 131, a truss mounting hole, 132, a support mounting hole, 133, a prism mounting hole, 134, a leg mounting hole, 135, a focal surface assembly mounting hole, 136, a correction mirror assembly mounting hole, 137, a fourth reinforcing rib, 138, a third lightening hole, 14, a prism, 2, a leg assembly, 21, a leg, 211, a mounting surface, 212, a fifth reinforcing rib, 213, a first flange, 214, a fourth lightening hole, 22, a first heat insulating pad, 3, focal plane assembly, 31, processing circuit, 32, detector, 33, second heat insulating pad, 34, frame, 35, focusing mechanism, 4, correction mirror assembly, 41, first light shield, 42, lens, 43, mirror mount, 44, clamping ring, 45, first gasket, 46, barrel, 5, secondary mirror assembly, 51, secondary mirror, 511, second mirror, 512, bonding hole, 513, fifth light weight hole, 514, diagonal rib, 52, secondary mirror substrate, 521, bonding surface, 522, sixth stiffener, 523, sixth light weight hole, 524, arc hinge, 525, second mounting hole, 53, second light shield, 54, cover plate, 55, second gasket, 6, light shield assembly, 61, upper light shield, 611, second flange, 612, second light blocking ring, 62, lower light shield, 63, lower fixing base, 64, upper fixing base, 7, truss assembly, 71, truss ring, 72, light shield burial piece, 73, truss rods, 74 and secondary mirror embedded parts.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-15, a spatial remote sensing camera based on elastic averaging principle center support primary mirror of the present invention mainly includes: a main mirror assembly 1, a support leg assembly 2, a focal plane assembly 3, a correction mirror assembly 4, a secondary mirror assembly 5, a light shield assembly 6 and a truss assembly 7; the upper end of the supporting leg component 2 is connected with the main mirror component 1, the lower end of the supporting leg component 2 is connected with a whole star, the focal plane component 3 is arranged at the lower end of the main mirror component 1, the correcting mirror component 4 is arranged at the center of the main mirror component 1, the truss component 7 is arranged at the upper end of the side surface of the main mirror component 1, the secondary mirror component 5 is arranged on the truss component 7, and the light shield component 6 is arranged on the outer surface of the truss component 7.
Specifically, the main mirror assembly 1 mainly includes: a main mirror 11, a main mirror support 12, a main mirror substrate 13, and a prism 14; the main mirror 11 is a columnar main mirror with a light-passing hole 116 in the center, when the caliber of the main mirror is not more than 0.5m, a central supporting mode is adopted, the main mirror support 12 is a petal-shaped main mirror support, the main mirror 11 is arranged on the upper surface of the main mirror support 12, the main mirror support 12 is arranged on the main mirror substrate 13, the prism 14 is arranged on the side surface of the main mirror substrate 13, and the main mirror 11 is supported by the main mirror support 12.
More specifically, the main mirror 11 is made of microcrystalline glass material, and the main mirror support 12 is made of invar steel material. The invention adopts microcrystalline glass material as the manufacturing material of the main mirror 11, relaxes the rigidity constraint of the main mirror 11 body, performs high-light weight design on the main mirror, and adopts invar steel material as the main mirror support 12 for performing thermal stability matching design. Through the design of thermal stability matching, the thermal expansion coefficient of the invar steel material can be consistent with that of the microcrystalline glass material, so that good thermal stability matching is realized, and the influence on the surface shape of the main mirror 11 caused by thermal stress introduced by environmental temperature change is avoided.
More specifically, the main mirror 11 mainly includes: a first mirror 111, a detection side 112, a first reinforcing rib 113, a first light-weight hole 114, a side 115, and a light-passing hole 116; the detection edge 112 is arranged on the side surface of the first mirror surface 111, the first reinforcing rib 113 and the first light weight hole 114 are arranged on the back of the first mirror surface 111, the light passing hole 116 is arranged at the center of the first mirror surface 111, and the side edge 115 is arranged on the side surface of the first reinforcing rib 113; the first light-weight hole 114 may be a triangle, rectangle, diamond, hexagon, or other light-weight hole; the contour surface of the light passing hole 116 may be a cylindrical surface or a conical surface, and the taper is determined by calculating friction force. The structural strength of the main mirror 11 is reinforced by the first reinforcing ribs 113 and the first light weight holes 114, and the weight of the main mirror 11 is reduced.
More specifically, the main mirror support 12 mainly includes: a second reinforcing rib 121, a support table 122, a hinge 123, a mounting base 124, a first mounting hole 125, a second lightweight hole 126, a third reinforcing rib 127, and an S-shaped hinge 128; the outer contour surface of the supporting table 122 is adhered to the light passing hole 116, the inner contour surface of the supporting table 122 is connected with the second reinforcing rib 121 through a hinge 123, and the rotating shaft of the hinge 123 is arranged along the optical axis direction; the supporting table 122 is connected with the mounting base surface 124 through three S-shaped hinges 128, a first mounting hole 125 is formed in the mounting base surface 124, a third reinforcing rib 127 is mounted on the supporting table 122, and a second light-weight hole 126 is formed in the third reinforcing rib 127; the outer contour surface of the supporting table 122 may be a cylindrical surface or a conical surface, and the taper is determined according to the taper of the light-passing hole 116; the slit form of the hinge 123 may be rectangular, circular, parabolic, or other forms of hinge slits; the slit form of the S-shaped hinge 128 may be a rectangular, circular, or parabolic slit form of other forms of S-shaped hinge. The structural strength of the main mirror support 12 is reinforced by the second reinforcing ribs 121, the second lightweight holes 126, and the third reinforcing ribs 127, and the weight of the main mirror support 12 is reduced.
More specifically, the main mirror substrate 13 mainly includes: truss mounting holes 131, support mounting holes 132, prism mounting holes 133, leg mounting holes 134, focal plane assembly mounting holes 135, correction mirror assembly mounting holes 136, fourth reinforcing ribs 137, and third light weight holes 138; the upper end surface of the main mirror substrate 13 is provided with a truss mounting hole 131 and a support mounting hole 132, the side surface of the main mirror substrate 13 is provided with a prism mounting hole 133, a supporting leg mounting hole 134, a focal plane component mounting hole 135 and a correction mirror component mounting hole 136 are formed in the lower end surface of the main mirror substrate 13, and a fourth reinforcing rib 137 and a third light weight hole 138 are mounted in the lower end surface of the main mirror substrate 13; the third lightweight hole 138 may be triangular, or may be rectangular, diamond-shaped, hexagonal, or other lightweight holes. Corresponding installation is performed through truss installation holes 131, support installation holes 132, prism installation holes 133, support leg installation holes 134, focal plane assembly installation holes 135 and correction mirror assembly installation holes 136, and the structural strength of the main mirror substrate 13 is reinforced through fourth reinforcing ribs 137 and third light weight holes 138, so that the weight of the main mirror substrate 13 is reduced.
Specifically, the leg assembly 2 mainly includes: a leg 21 and a first insulation pad 22; the supporting leg 21 is a cylinder with flanges arranged on the upper end face and the lower end face, the upper end face of the supporting leg 21 is connected with the main mirror base plate 13 through the first heat insulation pad 22 and the supporting leg mounting holes 134, and the lower end face of the supporting leg 21 is connected with the whole star.
More specifically, the upper end surface of the supporting leg 21 is provided with a mounting surface 211, the side surface of the supporting leg 21 is provided with a fifth reinforcing rib 212 and a fourth light weight hole 214, and the lower end surface of the supporting leg 21 is provided with a first flange 213; the fourth lightweight hole 214 may be rectangular, or may be a triangular, diamond-shaped, or hexagonal lightweight hole. The structural strength of the leg 21 is reinforced by the fifth reinforcing ribs 212 and the fourth lightweight holes 214, and the weight of the leg 21 is reduced.
Specifically, the focal plane assembly 3 mainly includes: processing circuitry 31, detector 32, second insulation pad 33, frame 34, and focusing mechanism 35; the upper end surface of the frame 34 is connected with the main mirror substrate 13 through the second heat insulation pad 33 and the focal plane assembly mounting hole 135, the processing circuit 31 and the detector 32 are mounted on the frame 34 together, the processing circuit 31 is located below the detector 32, the focusing mechanism 35 is mounted on the lower end surface of the frame 34, and the focusing mechanism 35 is used for pushing the processing circuit 31 and the detector 32 to move along the optical axis. The processing circuit 31 and the detector 32 are driven to operate by the focusing mechanism 35.
More specifically, the focusing mechanism 35 may be a worm wheel-worm structure, or may be a cam or other structure.
Specifically, the correction mirror assembly 4 mainly includes: a first light shield 41, a plurality of lenses 42, a lens holder 43, a pressing ring 44, a first gasket 45 and a lens barrel 46; the first light shield 41 is installed at the upper end of the lens barrel 46, the plurality of lenses 42 are installed inside the lens barrel 46, the lenses 42 are fixed inside the lens barrel 46 through the lens base 43 and the pressing ring 44, the lens barrel 46 is connected with the main lens substrate 13 through the first gasket 45 and the correction lens assembly mounting hole 136, a first light blocking ring is arranged inside the first light shield 41, and the position of the first light blocking ring can be determined according to a light ray propagation path.
More specifically, the first shade 41 may be a carbon fiber shade or an aluminum alloy shade.
Specifically, truss assembly 7 mainly includes: truss ring 71, three mask buries 72, three truss rods 73, and secondary mirror buries 74; the truss ring 71 is installed on the main mirror substrate 13 through truss mounting holes 131, three light shield embedded pieces 72 are uniformly installed on the truss ring 71, each truss rod 73 is installed on the corresponding light shield embedded piece 72, and the secondary mirror embedded pieces 74 are installed on the upper surfaces of the three truss rods 73.
More specifically, the truss ring 71, the mask embedded part 72 and the secondary mirror embedded part 74 are provided with lightweight holes; the truss rods 73 may be hollow rectangular truss rods or hollow round truss rods; the truss ring 71 may be a carbon fiber truss ring or an aluminum alloy truss ring; the truss frame 73 may be a carbon fiber truss frame or an aluminum alloy truss frame.
Specifically, the secondary mirror assembly 5 mainly includes: a sub-mirror 51, a sub-mirror substrate 52, a second light shield 53, a cover plate 54, and a second gasket 55; the secondary mirror 51 is adhered to the secondary mirror substrate 52 through epoxy glue, the second light shield 53 and the cover plate 54 are arranged on the upper end surface of the secondary mirror substrate 52, and the secondary mirror substrate 52 is connected with the secondary mirror embedded part 74 through the second gasket 55; the sub-mirror 51 is supported by the truss ring 71, the mask embedded part 72, the truss rod 73, and the sub-mirror embedded part 74.
More specifically, the back of the secondary mirror 51 is provided with a fifth light-weight hole 513 and an inclined rib 514, the center of the secondary mirror 51 is provided with an adhesive hole 512, the second mirror 511 is positioned on the lower end surface of the secondary mirror 51, the middle of the secondary mirror substrate 52 is provided with an adhesive surface 521, the outer side of the adhesive surface 521 is provided with an arc hinge 524, and the outer side of the arc hinge 524 is provided with a sixth reinforcing rib 522 and a sixth light-weight hole 523; the bonding hole 512 may be a tapered bonding hole or a cylindrical bonding hole; the bonding surface 521 may be a conical bonding surface or a cylindrical bonding surface; the arc hinge 524 may be a circular arc hinge or a rectangular hinge. The structural strength of the secondary mirror 51 is enhanced through the fifth light-weight hole 513 and the inclined rib 514, and the weight of the secondary mirror 51 is reduced; the structural strength of the sub-mirror substrate 52 is reinforced by the sixth reinforcing ribs 522 and the sixth lightening holes 523, and the weight of the sub-mirror substrate 52 is reduced.
Specifically, the light shield assembly 6 mainly includes: an upper shade 61, a lower shade 62, a lower fixing base 63, and an upper fixing base 64; the upper light shield 61 is connected with the whole star through an upper fixing seat 64, and the lower light shield 62 is connected with a light shield embedded part 72 through a lower fixing seat 63. The light is shielded by the upper light shield 61 and the lower light shield 62.
More specifically, the upper light shield 61 is a cylindrical upper light shield, the inner side of the upper light shield 61 is provided with a second light blocking ring 612, and the outer side of the upper light shield 61 is provided with a second flange 611; the upper shade 61 may be a carbon fiber shade or an aluminum alloy shade.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (10)
1. A spatial remote sensing camera based on elastic averaging principle center support primary mirror, comprising:
a primary mirror assembly (1), the primary mirror assembly (1) comprising: a main mirror substrate (13), a prism (14) mounted on a side surface of the main mirror substrate (13), a main mirror support (12) mounted on the main mirror substrate (13), and a main mirror (11) mounted on the main mirror support (12); the main mirror (11) is made of microcrystalline glass material, and the main mirror support (12) is made of invar steel material;
the support leg assembly (2) is connected with the lower end of the main mirror assembly (1); the lower end of the supporting leg assembly (2) is connected with the whole star;
a focal plane assembly (3) installed at the center of the main mirror assembly (1);
a correcting mirror assembly (4) mounted at the lower end of the main mirror assembly (1);
a truss assembly (7) mounted on the upper end of the side surface of the main mirror assembly (1);
a secondary mirror assembly (5) mounted on the truss assembly (7);
and the light shield assembly (6) is arranged on the outer surface of the truss assembly (7).
2. A spatial remote sensing camera based on elastic averaging principle, as defined in claim 1, characterized in that the primary mirror (11) comprises: the light guide plate comprises a first mirror surface (111), a detection edge (112) arranged on the side surface of the first mirror surface (111), a light transmission hole (116) arranged at the center of the first mirror surface (111), a first reinforcing rib (113) and a first light weight hole (114) which are all arranged on the back of the first mirror surface (111), and a side edge (115) arranged on the side surface of the first reinforcing rib (113);
the primary mirror support (12) comprises: the support table (122), the light hole (116) of support table (122) outline face and first mirror surface (111) center department bond mutually, link to each other with support table (122) inner profile face through hinge (123) second strengthening rib (121), hinge (123) pivot along the optical axis direction setting, through S-shaped hinge (128) and support table (122) continuous installation base (124), set up first mounting hole (125) on installation base (124), install third strengthening rib (127) on support table (122), set up second lightweight hole (126) on third strengthening rib (127).
3. A spatial remote sensing camera based on elastic averaging principle center support primary mirror according to claim 2, characterized in that the primary mirror substrate (13) comprises: truss mounting holes (131) and support mounting holes (132) arranged on the upper end face of the main mirror substrate (13), prism mounting holes (133) arranged on the side face of the main mirror substrate (13), support leg mounting holes (134) and third light weight holes (138) arranged on the lower end face of the main mirror substrate (13), focal plane assembly mounting holes (135) and correction mirror assembly mounting holes (136) and fourth reinforcing ribs (137) arranged on the lower end face of the main mirror substrate (13).
4. A space remote sensing camera based on elastic averaging principle center support primary mirror according to claim 3, characterized in that the leg assembly (2) comprises:
the support leg (21), the up end of the support leg (21) is provided with a mounting surface (211), the side surface of the support leg (21) is provided with a fifth reinforcing rib (212) and a fourth light hole (214), and the down end of the support leg (21) is provided with a first flange (213);
a first heat insulating pad (22) mounted on the mounting surface (211) of the leg (21);
the mounting surface (211) of the upper end surface of the supporting leg (21) is connected with the main mirror substrate (13) through a first heat insulation pad (22);
the lower end face of the supporting leg (21) is connected with the whole star through a first flange (213).
5. A space remote sensing camera based on elastic averaging principle center support primary mirror according to claim 3, characterized in that the focal plane assembly (3) comprises:
a frame (34);
the second heat insulation pad (33) is arranged on the upper end face of the frame (34), and the upper end face of the frame (34) is connected with the main mirror substrate (13) through the second heat insulation pad (33);
a focusing mechanism (35) mounted on the lower end surface of the frame (34);
a processing circuit (31) and a detector (32) mounted on a frame (34), the processing circuit (31) being located below the detector (32), the focusing mechanism (35) pushing the processing circuit (31) and the detector (32) along the optical axis.
6. A spatial remote sensing camera based on elastic averaging principle center support primary mirror according to claim 3, characterized in that the corrective mirror assembly (4) comprises:
a lens barrel (46);
a first gasket (45) mounted on a lens barrel (46), the lens barrel (46) being connected to the main lens substrate (13) through the first gasket (45);
the first light shielding cover (41) is arranged at the upper end of the lens cone (46), and a first light blocking ring is arranged on the inner wall of the first light shielding cover (41);
a plurality of lenses (42) mounted inside the lens barrel (46);
the lens (42) is fixed in the lens barrel (46) through the lens seat (43) and the pressing ring (44).
7. A space remote sensing camera based on elastic averaging principle center support primary mirror according to claim 3, characterized in that the truss assembly (7) comprises:
a truss ring (71) mounted on the main mirror substrate (13);
three light shield embedded parts (72) which are uniformly arranged on the truss ring (71);
three truss rods (73) which are arranged on the three light shield embedded parts (72) in a one-to-one correspondence manner;
and secondary mirror embedded parts (74) are arranged on the upper surfaces of the three truss rods (73).
8. A space remote sensing camera based on elastic averaging principle center support primary mirror according to claim 7, characterized in that the secondary mirror assembly (5) comprises:
a sub-mirror substrate (52);
a second washer (55) mounted on the secondary mirror substrate (52), the secondary mirror substrate (52) being connected to the secondary mirror insert (74) by the second washer (55);
a sub-mirror (51) bonded to the sub-mirror substrate (52);
a second light shield (53) and a cover plate (54) which are both arranged on the upper end surface of the secondary mirror substrate (52).
9. The space remote sensing camera based on the elastic average principle and with the central support of the main mirror according to claim 8, wherein a fifth light weight hole (513) and an inclined rib (514) are formed in the back of the secondary mirror (51), an adhesive hole (512) is formed in the center of the secondary mirror (51), the second mirror surface (511) is located on the lower end face of the secondary mirror (51), an adhesive surface (521) is arranged in the middle of the secondary mirror substrate (52), arc hinges (524) are distributed on the outer side of the adhesive surface (521), a sixth reinforcing rib (522) and a sixth light weight hole (523) are distributed on the outer side of the arc hinges (524), and a second mounting hole (525) is formed in the sixth reinforcing rib (522).
10. A space remote sensing camera based on elastic averaging principle center support primary mirror according to claim 7, characterized in that the light shield assembly (6) comprises:
the upper light shielding cover (61), wherein a second light blocking ring (612) is arranged on the inner wall of the upper light shielding cover (61);
a lower shade (62) connected to the lower end of the upper shade (61);
an upper fixing seat (64) arranged on the outer wall of the upper light shield (61), wherein the upper light shield (61) is connected with the whole star through the upper fixing seat (64);
the lower fixing seat (63) is arranged on the outer wall of the lower light shield (62), and the lower light shield (62) is connected with the light shield embedded part (72) through the lower fixing seat (63).
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