CN103777260A - Inflation reflector for outer space reflection type telescope - Google Patents
Inflation reflector for outer space reflection type telescope Download PDFInfo
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- CN103777260A CN103777260A CN201210417626.3A CN201210417626A CN103777260A CN 103777260 A CN103777260 A CN 103777260A CN 201210417626 A CN201210417626 A CN 201210417626A CN 103777260 A CN103777260 A CN 103777260A
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Abstract
This invention discloses an inflation reflector for an outer space reflection type telescope, comprising a reflection layer and a bottom layer, wherein the reflection layer is a condenser, the concave surface of the condenser is coated with a light-reflecting layer, and the bottom layer is a transparent film. The edge of the reflection layer is adhered to the edge of the bottom layer to form an inflatable air bag, and the edge of the reflection layer or the edge of the bottom player is provided with an inflation-and-deflation valve. The inflation reflector for the outer space reflection type telescope is foldable to obtain a relatively small volume which is beneficial for rocket emission. When reaching outer space, the internal of the inflation reflector is inflated and the air bag is expanded into a moon-shaped air bag to form the concave surface reflector for the outer space reflection type telescope. The inflation reflector for the outer space reflection type telescope is characterized by greatly reducing the volume and the weight of the telescope when the rocket is emitting and enabling the oversized outer space telescope to be possible.
Description
Technical field
The invention belongs to astronomical telescope manufacturing technology field, relate to particularly the inflation reflexes mirror that a kind of space autocollimator is used.
Background technology
The primary mirror eyeglass of large-scale astronomical telescope is generally very large.Concerning transmission-type telescope, single mirror optic diameter has reached more than 10 meters, tens tons of even hundreds of tons of general assembly (TW).Diameter 30-40 rice also prepare build among.
For reflecting telescope, enter the light in telescope, because do not see through eyeglass itself, thereby reflecting telescope does not have specific (special) requirements in optical property to lens materials, can adopt lightweight material to make, and due to advantages such as no color differneces, therefore the many employings of bigbore astronomical telescope are reflective.
But the surface accuracy of reflecting objective is double on the impact of light path, if only carry out imaging by a reflecting surface, this surperficial required degree of accuracy (vertical incidence light) is higher four times than the degree of accuracy of single refractive surface, and the requirement therefore reflecting surface being ground is very high.For cancellation spherical aberration, primary mirror is made generally in parabola.But when relative aperture is reduced to below 1/12, primary mirror can be made as sphere.Spherical mirror simple in structure, grinds than being easier to, and cost is also relatively cheap.In the larger system of relative aperture, parabola is often used the object lens larger as bore.
Because object lens are larger with the ratio of eyepiece, enlargement ratio is also higher, and therefore, in order to observe celestial body extremely at a distance, astronomical telescope must have great relative aperture.Disturb for fear of Atmospheric Flow, optimal is exactly to allow telescope in space work.Hubble Telescope is exactly representative instance.Hubble Telescope is autocollimator.Can be for (115-1010nm) detection universe target from ultraviolet near infrared, its clear aperture 2.4m.Weigh 11 tons, adopt space shuttle transmitting.Because the volume of primary mirror eyeglass is very large, weight is very heavy, and its launch cost is very high.If continue to increase bore,, except cost increases, its processing technology is also difficult to realize.
Summary of the invention
The inflation reflexes mirror that the object of the present invention is to provide a kind of space autocollimator to use, to improve the defect existing in known technology.
For achieving the above object, the inflation reflexes mirror that space autocollimator provided by the invention is used, mainly comprises:
One reflection horizon, the concave surface of this mirror is coated with reflector layer;
One bottom is a hyaline membrane;
The edge in described reflection horizon and the edge of bottom bonding form an inflatable air bag;
The edge in reflection horizon or the edge of bottom are provided with the valve of an inflation/deflation.
Described inflation reflexes mirror, wherein, reflector layer adopts plastics, rubber or tunica fibrosa to make.
Described inflation reflexes mirror, wherein, counterdie can adopt transparent plastic, resin or tunica fibrosa to make.
Described inflation reflexes mirror, wherein, the edge in reflection horizon and the edge of bottom are connected to an inflatable air bag by a support edge.
Described inflation reflexes mirror, wherein, support edge adopts plastics, resin, rubber, fiber or nylon to make.
Gas-filled type reflector provided by the invention, can greatly alleviate the weight of catoptron, has reduced preparation and launch cost; Make the super-large diameter reflection astronomical telescope (as 100 meters of above reflector telescopes of diameter) of space work become possibility.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas-filled type reflector of the present invention.
In accompanying drawing: the 1st, support edge; The 2nd, reflection horizon; The 3rd, bottom.
Embodiment
As shown in Figure 1, reflection horizon 2 is condensers to the structure of gas-filled type reflector of the present invention, on the surface of the concave surface of this condenser, adopts electroless plating to be coated with reflector layer.Bottom 3 is hyaline membranes, and the edge of the edge in reflection horizon 2 and bottom 3 directly bonds and forms a semi-moon shaped air bag.
The edge of the edge in reflection horizon 2 and bottom 3 also can be bonded in one can be flexible annular brace limit 1 on, support edge of the present invention can adopt silk or bar, an or annular air-pocket, to complete bonding each other.
Gas-filled type reflector of the present invention is subject to ambient pressure, air-flow, influence of temperature change large, thereby poor stability.Solution is:
1, stable environment air pressure, air-flow, temperature, in fact in space, these conditions are much relatively stable.
2, capture, at the default reference material of certain position, real-time reference material imaging and official portrait comparison, in the time that the two error reaches allowed band, take pictures immediately by automatic technique.
3, the above-mentioned two kinds of measures of integrated use.
Above-mentioned three part hermetic seals are bonded together, and form an air bag.In the time of rocket launching, it takes up room to obtain minimum in folded state.While going up to the air to precalculated position, in air bag, inflate, make balloon expansion become one and a half months type, its inside surface just becomes a catoptron.
In order to obtain low spherical aberration imaging, reflection horizon will be prepared into parabola, and this can blow acquisition by the such method of similar blow-molded glass bottle in particular mold.Simultaneously for to inflate in air bag, at the edge in reflection horizon or the edge of bottom be provided with the valve of an inflation/deflation.
As shown in Figure 1, the diameter that wherein reflection horizon 2 is pasted with the edge of transparent underlayer 3 is the limit of 2 millimeters; 2 is reflection horizon of 0.5 meter of a diameter, is made up of the plastics that high-strength flexible is good, can first in mould, be blow molded into the parabolic minute surface of 4 meters of focal lengths, and thickness is 1 millimeter, and the inside surface of concave surface is coated with the golden film of 0.5 micron of one deck with electroless plating; The 3rd, thickness is the transparent underlayer of 2 millimeters, is made up of good, flexible, the folding plastics of transparency.Reflectance coating 2 is bonded on support edge 1 with bottom 3 hermetic seals.Whole gas-filled type reflector can fold when infrabar in air bag, when air bag internal gas pressure reach predetermined in, just expand into a catoptron.Experimental results show that this catoptron can imaging in the time of ambient windstream and temperature stabilization, can obtain good picture by candid photograph technology.
As shown in Figure 1,1 be wherein the support edge that the high-strength nylon bar of 3 millimeters of diameters is made.The diameter in reflection horizon 2 is 2 meters, is to be made up of the good plastics of high-strength flexible, is blow molded into the parabola of 25 meters of focal lengths in mould, and thickness is 0.5 millimeter, and its inside surface is coated with the aluminium film of 0.5 micron of one deck with electroless plating.The thickness of transparent underlayer 3 is 3 millimeters, is made up of good, flexible, the folding plastics of transparency.Whole gas-filled type reflector can fold when infrabar in air bag, in the time that air bag internal gas pressure reaches predetermined pressure, expands into a catoptron.Experimental results show that this catoptron can imaging in the time of ambient windstream and temperature stabilization, can obtain good picture by candid photograph technology.
Claims (6)
1. the inflation reflexes mirror that space autocollimator is used, mainly comprises:
One reflection horizon, is concave mirror, and its surface is coated with reflexed light film;
One bottom is a hyaline membrane;
The edge in described reflection horizon and the edge of bottom bonding form an inflatable air bag;
The edge in reflection horizon or the edge of bottom are provided with the valve of an inflation/deflation.
2. inflation reflexes mirror according to claim 1, wherein, reflection horizon adopts plastics, rubber or tunica fibrosa to make.
3. inflation reflexes mirror according to claim 1, wherein, surface, reflection horizon scribbles the reflector layer of high reflectance.Reflector layer can be gold, silver or multilayer dielectric film.
4. inflation reflexes mirror according to claim 1, wherein, counterdie can adopt transparent plastic, resin or tunica fibrosa to make.
5. inflation reflexes mirror according to claim 1, wherein, the edge in reflection horizon and the edge of bottom are connected to an inflatable air bag by a support edge.
6. inflation reflexes mirror according to claim 1, wherein, support edge adopts plastics, resin, rubber, fiber or nylon to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417626.3A CN103777260A (en) | 2012-10-26 | 2012-10-26 | Inflation reflector for outer space reflection type telescope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210417626.3A CN103777260A (en) | 2012-10-26 | 2012-10-26 | Inflation reflector for outer space reflection type telescope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103777260A true CN103777260A (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210417626.3A Pending CN103777260A (en) | 2012-10-26 | 2012-10-26 | Inflation reflector for outer space reflection type telescope |
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| CN (1) | CN103777260A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692920A (en) * | 2020-06-12 | 2020-09-22 | 中山大学 | Space orientation energy reflection countermeasure method based on reflector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1650471A (en) * | 2001-05-30 | 2005-08-03 | 小约翰·R·埃西格 | Inflatable multifunction parabolic reflector apparatus and methods of manufacture |
| CN101216569A (en) * | 2008-01-02 | 2008-07-09 | 姚福来 | Gas-filled type reflector |
-
2012
- 2012-10-26 CN CN201210417626.3A patent/CN103777260A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1650471A (en) * | 2001-05-30 | 2005-08-03 | 小约翰·R·埃西格 | Inflatable multifunction parabolic reflector apparatus and methods of manufacture |
| CN101216569A (en) * | 2008-01-02 | 2008-07-09 | 姚福来 | Gas-filled type reflector |
Non-Patent Citations (2)
| Title |
|---|
| MINGWAN SOH ET AL.: "Optimal Thickness Variation of an Inflatable Circular Membrane Mirror", 《JOURNAL OF THE KOREAN PHYSICAL SOCIETY》 * |
| 毛冰晶 等.: "空间大口径薄膜反射聚能系统", 《红外与激光工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692920A (en) * | 2020-06-12 | 2020-09-22 | 中山大学 | Space orientation energy reflection countermeasure method based on reflector |
| CN111692920B (en) * | 2020-06-12 | 2022-02-22 | 中山大学 | Space orientation energy reflection countermeasure method based on reflector |
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Application publication date: 20140507 |