CN101533138A - Secondary mirror supporting structure of Cassegrain system camera - Google Patents
Secondary mirror supporting structure of Cassegrain system camera Download PDFInfo
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- CN101533138A CN101533138A CN200910021691A CN200910021691A CN101533138A CN 101533138 A CN101533138 A CN 101533138A CN 200910021691 A CN200910021691 A CN 200910021691A CN 200910021691 A CN200910021691 A CN 200910021691A CN 101533138 A CN101533138 A CN 101533138A
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- setting nut
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Abstract
The invention relates to a secondary mirror supporting structure of a Cassegrain system camera, which overcomes the defects of heavy weight and difficult adjustment of the prior secondary mirror three-rod supporting structure. The secondary mirror supporting structure comprises three secondary mirror supporting rods which are uniformly distributed on the periphery between a main mirror base and a secondary mirror base, a connecting part arranged between a secondary mirror supporting rod and a secondary mirror base, and a main mirror base connecting piece arranged between the secondary mirror supporting rod and the main mirror base, wherein the secondary mirror supporting rod consists of a plurality of hollow tubes which are connected end to end orderly; and the plurality of hollow tubes after connection form a plurality of sealed cavities correspondingly. The secondary mirror supporting structure has the advantages of light weight and convenient adjustment.
Description
Technical field
The present invention relates to a kind of secondary mirror supporting construction of Cassegrain system camera.
Background technology
On the Cassegrain system camera, because secondary mirror is in the inlet of light path, the status requirement between the primary and secondary mirror is very high, therefore requires secondary mirror supporting construction good rigidly, and in light weight, the area that is in the light is little, and thermal expansivity is little, and is easy to adjust.Three bar supporting constructions can realize that thereby secondary mirror supports requirement and ensures camera properties.But general secondary mirror three bar supporting construction weight are bigger, regulate difficulty.Therefore, need secondary mirror three bar supporting constructions a kind of in light weight, easy to adjust.
Summary of the invention
The technical problem to be solved in the present invention is that to overcome existing secondary mirror three bar supporting construction weight bigger, regulates the defective of difficulty, and secondary mirror three bar supporting constructions a kind of in light weight, easy to adjust are provided.
Technical solution of the present invention is as follows:
A kind of secondary mirror supporting construction of Cassegrain system camera, comprise the secondary mirror support bar that is arranged on three circumference uniform distributions between primary mirror seat, the inferior microscope base, and be arranged on link between secondary mirror support bar and time microscope base, and be arranged on primary mirror seat web member between secondary mirror support bar and the primary mirror seat, its special character is: described secondary mirror support bar is made up of the hollow tubular that a plurality of head and the tail link to each other successively, and described a plurality of hollow tubulars connect a plurality of enclosed cavities of the corresponding formation in back.
Above-mentioned each hollow tubular one end face is a Closed End, and it is provided with cylindrical boss, and the other end is provided with circular hole, and its boss glueds joint with the circular hole of the hollow tubular that is connected, and its circular hole glueds joint with the boss of the hollow tubular that is connected (9).
The cross-sectional diameter of above-mentioned secondary mirror support bar forms cone-shaped structure by increasing gradually to the primary mirror end by the secondary mirror end.
Above-mentioned link comprises secondary mirror seated connection head, spacing ring, support bar joint and setting nut, wherein secondary mirror seated connection head is cylindric, its inside surface is provided with internal thread, its outside surface is provided with the setting nut positive stop lug boss, the one end is connected with time microscope base, spacing ring is a flange-like, and its outside surface is provided with external thread, and the other end of described secondary mirror seated connection head is threaded with spacing ring; The support bar joint is cylindric, and outside surface is provided with external thread, and setting nut is cylindric, and the one end is provided with snap ring, and described snap ring is arranged between setting nut positive stop lug boss and the spacing ring flange, and its other end is connected with the support bar joint screw thread.
Above-mentioned secondary mirror support bar is a carbon fibre composite, the invar material that described support bar joint adopts thermal expansivity with it to adapt.
Advantage of the present invention is:
1. secondary mirror support bar rigidity is strong.Adopt hollow variable cross section ring form.Because the secondary mirror support bar is longer, therefore secondary mirror can need specific stiffness (ratio of rigidity and the weight) height of secondary mirror support bar vertically to the secondary mirror support bar application of force under the influence of gravity.Obviously, hollow stem is higher than the solid hopkinson bar specific stiffness, therefore adopts hollow stem version.For the secondary mirror support bar, it is less that its part near secondary mirror is born moment of flexure, it is bigger partly to bear moment of flexure away from secondary mirror, therefore the secondary mirror support bar can be designed as the round platform form, promptly near the secondary mirror position, the bar diameter of section is less, away from the secondary mirror position, the bar diameter of section is bigger, can give full play to material behavior like this.Of paramount importancely be, because the complete hollow of hollow tubular, its rigidity is not as the laemodipodiform pipe.The laemodipodiform pipe is divided into some joints, and joint couples together with joint and forms an integral tube, thereby ring partly forms the rigidity that sealed hollow has increased the secondary mirror support bar effectively.
2. the secondary mirror support bar because the glue between ring has played buffer action, is protected secondary mirror thereby the ring part can absorb suitable energy better when bearing oscillating load.
3. easy to adjust.Adopt threaded adjusting in secondary mirror support bar and time microscope base coupling part, three threaded adjusting parts can be realized the adjusting of secondary mirror six-freedom degree, thereby can accurately ensure the position relation between the primary and secondary mirror, adopt jackscrew to fix after adjusting is finished.
4. thermal expansivity is little.The secondary mirror support bar adopts the little carbon fibre composite of thermal expansivity, has satisfied the little requirement of thermal expansivity.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a stereographic map of the present invention.
Fig. 3 is the broken section enlarged drawing of a-quadrant among Fig. 1.
Fig. 4 is the broken section enlarged drawing in B zone among Fig. 1.
Fig. 5 is the tubular structure synoptic diagram.
Description of reference numerals: 1-microscope base, 2-secondary mirror, 3-secondary mirror support bar, 4-secondary mirror seated connection head, 5-spacing ring, 6-support bar joint, 7-setting nut, 8-boss, 9-hollow tubular, 10-circular hole, 11-setting nut positive stop lug boss, 12-primary mirror seat.
Embodiment
Referring to Fig. 1 and Fig. 2, the present invention is a kind of secondary mirror supporting construction of Cassegrain system camera, comprise the secondary mirror support bar 3 that is arranged on three circumference uniform distributions between primary mirror seat 12, the inferior microscope base 1, and be arranged on link between secondary mirror support bar 3 and time microscope base 1, and be arranged on primary mirror seat web member between secondary mirror support bar 3 and the primary mirror seat 12, secondary mirror support bar 3 is made up of the hollow tubular 9 that a plurality of head and the tail link to each other successively, and a plurality of hollow tubulars 9 connect a plurality of enclosed cavities of the corresponding formation in back.Secondary mirror support bar 3 adopts the hollow stem form, and the solid support bar rigidity of its same weight is higher.
Referring to Fig. 5, each hollow tubular one end face is a Closed End, and it is provided with cylindrical boss 8, and the other end is provided with circular hole 10, and its boss 8 glueds joint with the circular hole 10 of the hollow tubular 9 that is connected, and its circular hole glueds joint with the boss 8 of the hollow tubular 9 that is connected.Hollow tubular 9 is because it is complete hollow, and its rigidity is not as the laemodipodiform pipe.The laemodipodiform pipe is divided into some joints, and joint couples together with joint and forms a complete pipe, and every ring has partly formed the cavity of a complete closed, has increased the rigidity of bar widely.In addition, when bearing oscillating load,, the ring part protects secondary mirror better thereby can absorbing certain energy.
The cross-sectional diameter of secondary mirror support bar 3 forms cone-shaped structure by increasing gradually to the primary mirror end by the secondary mirror end.Because secondary mirror support bar 3 is more little the closer to its moment of flexure of being born of secondary mirror end, the moment of flexure of bearing away from the secondary mirror end is big more more, secondary mirror support bar 3 adopts truncated conical shape, be that secondary mirror support bar 3 is little near secondary mirror end cross-sectional area, big away from secondary mirror end cross-sectional area, can give full play to material property, weight reduction like this.
Referring to Fig. 4, link comprises secondary mirror seated connection head 4, spacing ring 5, support bar joint 6 and setting nut 7,
Wherein secondary mirror seated connection head 4 is cylindric, and its inside surface is provided with internal thread, and its outside surface is provided with setting nut positive stop lug boss 11, the one end is connected with time microscope base 1, spacing ring 5 is a flange-like, and its outside surface is provided with external thread, and the other end of described secondary mirror seated connection head 4 is threaded with spacing ring 5;
Because camera space is had relatively high expectations to the thermal expansivity of structure, so secondary mirror support bar 3 adopts specific stiffness height, the carbon fibre composite that thermal expansivity is little.Referring to Fig. 5, each ring gluing junction between ring in every secondary mirror support bar 3, promptly the ring termination is connected and fixed by adhesive means and adjacent ring.The invar material that secondary mirror end connector 6 adopts thermal expansivity with it to be complementary.
Claims (5)
1. the secondary mirror supporting construction of a Cassegrain system camera, comprise the secondary mirror support bar (3) that is arranged on three circumference uniform distributions between primary mirror seat (12), the inferior microscope base (1), and be arranged on link between secondary mirror support bar and time microscope base (1), and be arranged on primary mirror seat web member between secondary mirror support bar (3) and the primary mirror seat (12), it is characterized in that:
Described secondary mirror support bar (3) is made up of the hollow tubular (9) that a plurality of head and the tail link to each other successively, and described a plurality of hollow tubulars (9) connect a plurality of enclosed cavities of the corresponding formation in back.
2. secondary mirror supporting construction according to claim 1, it is characterized in that: described each hollow tubular (9) one end face are Closed End, it is provided with cylindrical boss (8), the other end is provided with circular hole (10), its boss (8) glueds joint with the circular hole (10) of the hollow tubular that is connected (9), and its circular hole (10) glueds joint with the boss (8) of the hollow tubular that is connected (9).
3. secondary mirror supporting construction according to claim 2 is characterized in that: the cross-sectional diameter of described secondary mirror support bar (3) forms cone-shaped structure by increasing gradually to the primary mirror end by the secondary mirror end.
4. according to claim 1 or 2 or 3 described secondary mirror supporting constructions, it is characterized in that:
Described link comprises secondary mirror seated connection head (4), spacing ring (5), support bar joint (6) and setting nut (7),
Wherein secondary mirror seated connection head (4) is cylindric, its inside surface is provided with internal thread, its outside surface is provided with setting nut positive stop lug boss (11), the one end is connected with time microscope base (1), spacing ring (5) is a flange-like, its outside surface is provided with external thread, and the other end of described secondary mirror seated connection head (4) is threaded with spacing ring (5);
Support bar joint (6) is cylindric, outside surface is provided with external thread, and setting nut (7) is cylindric, and the one end is provided with snap ring, described snap ring is arranged between setting nut (7) positive stop lug boss and spacing ring (5) flange, and its other end is threaded with support bar joint (6).
5. secondary mirror supporting construction according to claim 4 is characterized in that: described secondary mirror support bar (3) is a carbon fibre composite, the invar material that described support bar joint (6) adopts thermal expansivity with it to adapt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100216912A CN101533138B (en) | 2009-03-25 | 2009-03-25 | Secondary mirror supporting structure of Cassegrain system camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100216912A CN101533138B (en) | 2009-03-25 | 2009-03-25 | Secondary mirror supporting structure of Cassegrain system camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101533138A true CN101533138A (en) | 2009-09-16 |
| CN101533138B CN101533138B (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100216912A Expired - Fee Related CN101533138B (en) | 2009-03-25 | 2009-03-25 | Secondary mirror supporting structure of Cassegrain system camera |
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| CN (1) | CN101533138B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193161A (en) * | 2011-05-31 | 2011-09-21 | 哈尔滨工业大学 | Five-freedom-degree precise position fixing device for adjustment of lens sets |
| CN103389555A (en) * | 2013-07-30 | 2013-11-13 | 中国科学院长春光学精密机械与物理研究所 | Secondary mirror supporting mechanism capable of quick adjusting |
| CN107144935A (en) * | 2017-06-16 | 2017-09-08 | 中国科学院西安光学精密机械研究所 | A kind of primary and secondary mirror support of the high resonant frequency of Light deformation |
| CN107991747A (en) * | 2017-09-15 | 2018-05-04 | 北京仿真中心 | A kind of optical system is without thermalization mechanical device |
| CN108398382A (en) * | 2018-02-05 | 2018-08-14 | 复旦大学 | Portable free optical assembly based on Quantum Design comprehensive physical property measurement systems |
| CN109442151A (en) * | 2018-10-23 | 2019-03-08 | 中国科学院光电研究院 | The Formwork Support for External structure of space wide cut camera |
| CN112526704A (en) * | 2020-12-16 | 2021-03-19 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Novel cassegrain system primary and secondary mirror supporting structure |
| CN112578528A (en) * | 2020-12-30 | 2021-03-30 | 四川中科朗星光电科技有限公司 | Secondary mirror supporting structure capable of reducing turbulence phenomenon in optical system and optical system |
-
2009
- 2009-03-25 CN CN2009100216912A patent/CN101533138B/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193161B (en) * | 2011-05-31 | 2012-12-05 | 哈尔滨工业大学 | Five-freedom-degree precise position fixing device for adjustment of lens sets |
| CN102193161A (en) * | 2011-05-31 | 2011-09-21 | 哈尔滨工业大学 | Five-freedom-degree precise position fixing device for adjustment of lens sets |
| CN103389555A (en) * | 2013-07-30 | 2013-11-13 | 中国科学院长春光学精密机械与物理研究所 | Secondary mirror supporting mechanism capable of quick adjusting |
| CN107144935B (en) * | 2017-06-16 | 2022-12-23 | 中国科学院西安光学精密机械研究所 | Primary and secondary mirror support of high resonant frequency of micro-deformation |
| CN107144935A (en) * | 2017-06-16 | 2017-09-08 | 中国科学院西安光学精密机械研究所 | A kind of primary and secondary mirror support of the high resonant frequency of Light deformation |
| CN107991747A (en) * | 2017-09-15 | 2018-05-04 | 北京仿真中心 | A kind of optical system is without thermalization mechanical device |
| CN107991747B (en) * | 2017-09-15 | 2024-03-19 | 北京仿真中心 | Athermalization mechanical device of optical system |
| CN108398382A (en) * | 2018-02-05 | 2018-08-14 | 复旦大学 | Portable free optical assembly based on Quantum Design comprehensive physical property measurement systems |
| CN109442151A (en) * | 2018-10-23 | 2019-03-08 | 中国科学院光电研究院 | The Formwork Support for External structure of space wide cut camera |
| CN112526704B (en) * | 2020-12-16 | 2022-05-17 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Cassegrain system primary and secondary mirror supporting structure |
| CN112526704A (en) * | 2020-12-16 | 2021-03-19 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Novel cassegrain system primary and secondary mirror supporting structure |
| CN112578528A (en) * | 2020-12-30 | 2021-03-30 | 四川中科朗星光电科技有限公司 | Secondary mirror supporting structure capable of reducing turbulence phenomenon in optical system and optical system |
| CN112578528B (en) * | 2020-12-30 | 2023-03-31 | 四川中科朗星光电科技有限公司 | Secondary mirror supporting structure capable of reducing turbulence phenomenon in optical system and optical system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101533138B (en) | 2011-04-27 |
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