CN204719256U - The embedded outer light shield of a kind of ultrashort type - Google Patents
The embedded outer light shield of a kind of ultrashort type Download PDFInfo
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- CN204719256U CN204719256U CN201520353497.5U CN201520353497U CN204719256U CN 204719256 U CN204719256 U CN 204719256U CN 201520353497 U CN201520353497 U CN 201520353497U CN 204719256 U CN204719256 U CN 204719256U
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- cone
- light shield
- joint flange
- internal layer
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Abstract
The embedded outer light shield of a kind of ultrashort type, comprising: cone, rib bar (3) and joint flange (4); Cone comprises internal layer cone (1), outer cone (2), joint flange (4) is positioned at the outside of outer cone (2), rib bar (3) is through the through hole on outer cone (2), one end is fixed on the lateral wall of internal layer cone (1), the other end is fixed on all sides of joint flange (4), and the end face of joint flange (4) has threaded hole.The utility model adopts two-layer or multilayer cone structure to replace long large-scale outer light shield, light shield embedded space remote sensor agent structure simultaneously, effectively can suppress the parasitic light of optical-mechanical system, reduce Space Remote Sensors physical dimension, solve the space constraint problem of large-scale light shield by rocket radome fairing, satellite structure, aerial camera carrying platform etc., be conducive to Space Remote Sensors gesture stability.
Description
Technical field
The utility model relates to the embedded outer light shield of a kind of ultrashort type, is specially adapted to the Space Remote Sensors that structural requirement is compact.
Background technology
The parasitic light that the sun causes is the key factor affecting Space Remote Sensors imaging system images quality, image planes are arrived in order to reduce the light directly entering Space Remote Sensors outside visual field as far as possible, the outer light shield length designed is long, and the problem that longer outer light shield can bring that the structural volume of optical-mechanical system increases, weight increases, inertia is large.But the physical dimension of Space Remote Sensors is often limited to rocket dome space envelope, satellite one-piece construction, aerial camera carrying platform structure etc., and optical-mechanical system is crossed senior general and caused adverse influence to the performance affecting Space Remote Sensors.
Utility model content
Technology of the present utility model is dealt with problems and is: adopt the embedded outer light shield of a kind of ultrashort type to replace long large-scale outer light shield, reduce Space Remote Sensors physical dimension, solve the space constraint problem of large-scale light shield by rocket radome fairing, satellite structure, aerial camera carrying platform etc., simultaneously, overcome the problem that large-scale light shield inertia is large, be beneficial to Space Remote Sensors gesture stability.
Technical solution of the present utility model is: the embedded outer light shield of a kind of ultrashort type, comprising: cone, rib bar and joint flange; Cone comprises internal layer cone, outer cone, joint flange is positioned at the outside of outer cone, two-layer cone and joint flange are fixedly connected with by rib bar, rib bar is through the through hole on outer cone, one end is fixed on the lateral wall of internal layer cone, the other end is fixed on all sides of joint flange, and the end face of joint flange has threaded hole.
Described cone also at least comprises a middle level cone, and middle level cone is between internal layer cone and outer cone, and middle level cone diameter is greater than the diameter of internal layer cone and is less than the diameter of outer cone; Rib bar is through middle level cone sidewall.Described cone and joint flange surface coating Berlin black.
The utility model advantage is compared with prior art:
(1) the embedded outer light shield of ultrashort type that the utility model adopts the two-layer or multilayer cone combined by internal layer cone and outer cone to form replaces existing long large-scale outer light shield, and the light shield outer wall that the utility model adopts is thinner, greatly reduce the physical dimension of light shield, reduce volume and weight, and this light shield can be embedded in Space Remote Sensors agent structure, solve the space constraint problem of large-scale light shield by rocket radome fairing, satellite structure, aerial camera carrying platform etc.
(2) the utility model adopts two-layer or multilayer cone to replace the large-scale outer light shield of existing individual layer, effectively can suppress the optical element of light direct irradiation optical system and the veiling glare that produces.
(3) the shading cover structure size of the utility model employing is little, and is embedded in optical-mechanical system agent structure, and inertia is little, is easier to Space Remote Sensors gesture stability.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model basic structure vertical view.
Fig. 3 is the utility model basic structure side sectional view.
Fig. 4 is the sectional view that the utility model is applied to off-axis reflection system example.
Embodiment
As shown in Figure 1, 2, 3, the embedded outer light shield of a kind of ultrashort type, comprising: cone, rib bar 3 and joint flange 4, cone comprises internal layer cone 1, outer cone 2, joint flange 4 is positioned at outside outer cone 1, at least one middle level cone all right between internal layer cone 1 and outer cone 2, two-layer or multilayer cone and joint flange 4 are connected by two or more rib bar 3, rib bar 3 is through the through hole on outer cone 2, one end is fixed on the lateral wall of internal layer cone 1, the other end is fixed on all sides of joint flange 4, the end face of joint flange 4 has threaded hole, by threaded hole and attaching nut, embedded for ultrashort type outer light shield is fixed on optical-mechanical system entrance.Cone, joint flange 4 surface coating Berlin black.
Cone can be cylindrical drum, square tube or conical cylinder, and cone shape and the number of plies can be determined by following process: first, determines the outer light shield size allowed according to Space Remote Sensors physical dimension; Then, utilizing Analysis for Stray Light software to locate parasitic light suppresses angle external enwergy to get at the main parasitic light path reaching image planes; Finally, cone shape and the number of plies is determined according to parasitic light path.
As shown in Figure 4, for the utility model is applied to off-axis reflection system example, for avoiding because embedded light shield blocks imaging light, cone can use unsymmetric structure.
The unexposed technology of the utility model belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. the embedded outer light shield of ultrashort type, is characterized in that, comprising: cone, rib bar (3) and joint flange (4); Cone comprises internal layer cone (1), outer cone (2), joint flange (4) is positioned at the outside of outer cone (2), two-layer cone and joint flange (4) are fixedly connected with by rib bar (3), rib bar (3) is through the through hole on outer cone (2), one end is fixed on the lateral wall of internal layer cone (1), the other end is fixed on all sides of joint flange (4), and the end face of joint flange (4) has threaded hole.
2. the embedded outer light shield of a kind of ultrashort type according to claim 1, it is characterized in that: described cone also at least comprises a middle level cone, middle level cone is positioned between internal layer cone (1) and outer cone (2), and middle level cone diameter is greater than the diameter of internal layer cone (1) and is less than the diameter of outer cone (2); Rib bar (3) is through middle level cone sidewall.
3. the embedded outer light shield of a kind of ultrashort type according to claim 1 and 2, is characterized in that: described cone and joint flange (4) surface coating Berlin black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520353497.5U CN204719256U (en) | 2015-05-27 | 2015-05-27 | The embedded outer light shield of a kind of ultrashort type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520353497.5U CN204719256U (en) | 2015-05-27 | 2015-05-27 | The embedded outer light shield of a kind of ultrashort type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204719256U true CN204719256U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520353497.5U Active CN204719256U (en) | 2015-05-27 | 2015-05-27 | The embedded outer light shield of a kind of ultrashort type |
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| CN (1) | CN204719256U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608070A (en) * | 2017-09-21 | 2018-01-19 | 中国科学院长春光学精密机械与物理研究所 | One kind is used for the deployable shading closure assembly of stationary orbit remote sensing camera |
| CN109975830A (en) * | 2019-02-21 | 2019-07-05 | 上海卫星工程研究所 | The in-orbit thermal deformation suppressing system of GEO satellite optical remote sensing instrument |
| CN110596991A (en) * | 2019-09-27 | 2019-12-20 | 长光卫星技术有限公司 | Ultra-light stray light eliminating assembly suitable for coaxial micro-nano remote sensing camera |
| CN112068383A (en) * | 2020-09-18 | 2020-12-11 | 长光卫星技术有限公司 | Stray light eliminating assembly suitable for off-axis three-reflection wide-width remote sensing camera |
| WO2023087920A1 (en) * | 2021-11-16 | 2023-05-25 | Oppo广东移动通信有限公司 | Light-shielding assembly and preparation method therefor, optical lens, camera, and electronic device |
-
2015
- 2015-05-27 CN CN201520353497.5U patent/CN204719256U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608070A (en) * | 2017-09-21 | 2018-01-19 | 中国科学院长春光学精密机械与物理研究所 | One kind is used for the deployable shading closure assembly of stationary orbit remote sensing camera |
| CN107608070B (en) * | 2017-09-21 | 2019-06-04 | 中国科学院长春光学精密机械与物理研究所 | One kind being used for the deployable shading closure assembly of stationary orbit remote sensing camera |
| CN109975830A (en) * | 2019-02-21 | 2019-07-05 | 上海卫星工程研究所 | The in-orbit thermal deformation suppressing system of GEO satellite optical remote sensing instrument |
| CN109975830B (en) * | 2019-02-21 | 2021-09-03 | 上海卫星工程研究所 | In-orbit thermal deformation suppression system for GEO satellite optical remote sensing instrument |
| CN110596991A (en) * | 2019-09-27 | 2019-12-20 | 长光卫星技术有限公司 | Ultra-light stray light eliminating assembly suitable for coaxial micro-nano remote sensing camera |
| CN112068383A (en) * | 2020-09-18 | 2020-12-11 | 长光卫星技术有限公司 | Stray light eliminating assembly suitable for off-axis three-reflection wide-width remote sensing camera |
| WO2023087920A1 (en) * | 2021-11-16 | 2023-05-25 | Oppo广东移动通信有限公司 | Light-shielding assembly and preparation method therefor, optical lens, camera, and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |