CN204203530U - Secondary mirror supporting structure - Google Patents
Secondary mirror supporting structure Download PDFInfo
- Publication number
- CN204203530U CN204203530U CN201420560455.4U CN201420560455U CN204203530U CN 204203530 U CN204203530 U CN 204203530U CN 201420560455 U CN201420560455 U CN 201420560455U CN 204203530 U CN204203530 U CN 204203530U
- Authority
- CN
- China
- Prior art keywords
- secondary mirror
- support tube
- lens barrel
- supporting structure
- picture frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model provides a kind of secondary mirror supporting structure, and this secondary mirror supporting structure comprises secondary mirror support tube, is inlaid with the lens barrel of primary mirror and is inlaid with the secondary mirror assembly of secondary mirror; Lens barrel, secondary mirror support tube and secondary mirror assembly are from outer to inner set in together successively; The thermal expansivity of lens barrel and the thermal expansivity of secondary mirror assembly are all less than the thermal expansivity of secondary mirror support tube.The utility model can solve position between space camera primary and secondary mirror automatically disappear heat, the problem such as suppress optical system parasitic light and regulate primary and secondary mirror optics coaxial.
Description
Technical field
The utility model belongs to optical field, relates to a kind of supporting construction of optical element, particularly relates to a kind ofly automatically to disappear heat, the secondary mirror supporting structure that suppresses optical system parasitic light and regulate primary and secondary mirror optics coaxially to work for position between space camera primary and secondary mirror.
Background technology
In space camera field, the world today, reflective optical system is more and more widely used.And space camera working environment is often comparatively severe, thermal environment variation range is wide, space parasitic light also also can have a certain impact to camera imaging quality, and for reflective optical system, the relative position relation of primary and secondary mirror structure directly has influence on the function application of camera.Therefore need to find a kind of secondary mirror supporting structure to realize the precision adjustment of primary and secondary mirror position relationship.
Utility model content
In order to solve the above-mentioned technical matters existed in background technology, the utility model provide a kind of solve position between space camera primary and secondary mirror automatically disappear heat, the secondary mirror supporting structure of problem such as suppress optical system parasitic light and regulate primary and secondary mirror optics coaxial.
Technical solution of the present utility model is: the utility model provides a kind of secondary mirror supporting structure, and its special character is: described secondary mirror supporting structure comprises secondary mirror support tube, is inlaid with the lens barrel of primary mirror and is inlaid with the secondary mirror assembly of secondary mirror; Described lens barrel, secondary mirror support tube and secondary mirror assembly are from outer to inner set in together successively; The thermal expansivity of described lens barrel and the thermal expansivity of secondary mirror assembly are all less than the thermal expansivity of secondary mirror support tube.
Above-mentioned mirror assembly is telescopic picture frame.
Above-mentioned mirror assembly is integral cartridge formula time picture frame.
Above-mentioned telescopic picture frame comprise that from-inner-to-outer sets gradually for install secondary mirror secondary mirror installing frame, for suppressing the multilayer thin walled cylinder body of parasitic light and being sleeved on multilayer thin walled cylinder body outermost outer ring sleeve; Described lens barrel, secondary mirror support tube and outer ring sleeve are from outer to inner set in together successively.
In above-mentioned multilayer thin walled cylinder body all sleeves vertically size be aniso-.
Above-mentioned telescopic picture frame also comprises the ribs be arranged between installing frame and multilayer thin walled cylinder body and between multilayer thin walled cylinder body and outer ring sleeve.
Above-mentioned telescopic picture frame also comprises the little trim ring of secondary mirror for compressing secondary mirror be arranged in secondary mirror installing frame; The little trim ring of described secondary mirror is the discoid of non-hollow.
Above-mentioned lens barrel is provided with and the first hole for injecting glue that between lens barrel and secondary mirror support tube, gap connects; Described secondary mirror support tube is provided with and the second hole for injecting glue that between secondary mirror support tube and secondary mirror assembly, gap connects, described first hole for injecting glue and the second hole for injecting glue are all threaded holes.
The face that above-mentioned lens barrel contacts with secondary mirror support tube is provided with surface of contact step; Described lens barrel and secondary mirror support tube are provided with spacer ring between surface of contact step; Described secondary mirror supporting structure also comprises the large trim ring of secondary mirror for compressing in secondary mirror support tube and lens barrel.
The beneficial effects of the utility model are:
The utility model provides a kind of secondary mirror supporting structure, the material selecting thermal expansivity little does lens barrel and the large material of thermal expansivity does secondary mirror support tube, and do cone to connect by the material that thermal expansivity is little, the utility model can realize by secondary mirror supporting structure while eliminating certain parasitic light, realize primary and secondary mirror under different thermal environments, automatic elimination primary and secondary mirror relative position thermal effect, and by the secondary processing of supporting construction to ensure the function that primary and secondary mirror optical axis is concentric.Under different thermal environments, adopt the equidirectional extension of secondary picture frame being provided with secondary mirror or the contraction of the lens barrel being provided with primary mirror of less expansion coefficient material and less thermal expansivity, adopt the extending for the secondary mirror support tube and the above two opposite directions connecting lens barrel and time picture frame or shrink to realize the thermal compensation of primary and secondary mirror of larger expansion coefficient material, ensure that primary and secondary mirror relative axial position is constant under different thermal environments.Meanwhile, secondary picture frame possesses multilayer thin walled cylinder body, and every layer of sleeve axial dimension is inconsistent, beats reflected light on primary mirror determine according to incident parallel light, parasitic light can between secondary picture frame multilayer sleeve after multiple reflections energy dropoff be inhibited.Version of the present utility model is simple, integrated design good rigidity, and part processing is easy, and easily debug, by ribs optimization in secondary picture frame, improve secondary mirror group fundamental frequency, ensure its intensity, multilayer thin walled cylinder body is little to blocking of incident light; Can complete the hot merit energy that disappears voluntarily, maintainability is good; Can be widely used in space camera optical system disappears during heat, veiling glare suppress and regulate optics coaxial automatically.
Accompanying drawing explanation
Fig. 1 is the structural representation of provided by the utility model picture frame;
Fig. 2 is provided by the utility model picture frame structural representation in another angle;
Fig. 3 is the structure cut-open view of provided by the utility model mirror assembly before secondary processing;
Fig. 4 is secondary mirror supporting structure provided by the utility model structural representation after finishing assembly;
Wherein:
A, B, C are time picture frame cone respectively; D is secondary mirror installing frame; E is the ribs connecting cone and time picture frame; 1-lens barrel; 2-picture frame; 3-secondary mirror support tube; 4-spacer ring; The large trim ring of 5-secondary mirror; The little trim ring of 6-secondary mirror; 7-secondary mirror; 8-primary mirror; 9-gib screw.
Embodiment
See Fig. 4, the utility model provides a kind of secondary mirror supporting structure, and this secondary mirror supporting structure comprises secondary mirror support tube, is inlaid with the lens barrel of primary mirror and is inlaid with the secondary mirror assembly of secondary mirror; Lens barrel, secondary mirror support tube and secondary mirror assembly are from outer to inner set in together successively; The thermal expansivity of lens barrel and the thermal expansivity of secondary mirror assembly are all less than the thermal expansivity of secondary mirror support tube.
Material selection titanium alloy material, the invar material of lens barrel or carbon fibre material processes; Material selection titanium alloy material, the invar material of secondary mirror assembly or carbon fibre material processes; The same aluminium alloy material of material of secondary mirror support tube or almag process.
The aluminum alloy materials that secondary mirror support tube material selection thermal expansivity is larger, one end has screw thread in order to connect time picture frame, the other end can carry out secondary processing and lens barrel and manufacture the optics that can realize primary and secondary mirror and coaxially regulate, coordinate lens barrel simultaneously, secondary picture frame completes the hot merit energy that automatically disappears, secondary mirror support tube and lens barrel junction thread mill drilling, and process spew groove.
Secondary mirror assembly is telescopic picture frame, especially integral cartridge formula time picture frame.The titanium alloy material that lens barrel material selects thermal expansivity less, can install primary mirror and secondary mirror support tube etc., and be connected with external unit by flange, lens barrel and secondary mirror support tube link position open threaded hole.
Telescopic picture frame comprise that from-inner-to-outer sets gradually for install secondary mirror secondary mirror installing frame, for suppressing the multilayer thin walled cylinder body of parasitic light and being sleeved on multilayer thin walled cylinder body outermost outer ring sleeve; Lens barrel, secondary mirror support tube and outer ring sleeve are from outer to inner set in together successively.Outmost turns sleeve has screw thread, and the other end processes a cylinder outer diameter of step and secondary mirror support tube internal diameter manufactures; Article three, ribs is for connecting multilayer sleeve and secondary mirror inside casing, and ribs axially to keep with corresponding coupling sleeve with long so that process and strengthen structure bulk strength simultaneously through optimal design.
In multilayer thin walled cylinder body all sleeves vertically size be aniso-.
Telescopic time picture frame also comprises the ribs be arranged between installing frame and multilayer thin walled cylinder body and between multilayer thin walled cylinder body and outer ring sleeve.
The little trim ring of secondary mirror, in order to compress and to fix secondary mirror in secondary mirror carriage, directly enters secondary mirror for blocking incident light simultaneously, the little trim ring of secondary mirror not hollow, for discoid, and center grooved weight reduction simultaneously.
Lens barrel is provided with and the first hole for injecting glue that between lens barrel and secondary mirror support tube, gap connects; Secondary mirror support tube is provided with and the second hole for injecting glue that between secondary mirror support tube and secondary mirror assembly, gap connects, the first hole for injecting glue and the second hole for injecting glue are all threaded holes.
The face that lens barrel contacts with secondary mirror support tube is provided with surface of contact step; Lens barrel and secondary mirror support tube are provided with spacer ring between surface of contact step; Spacer ring can be used for regulating the position relationship under secondary mirror and primary mirror starting condition by repairing to grind.
Secondary mirror supporting structure also comprises the large trim ring of secondary mirror for compressing in secondary mirror support tube and lens barrel.The large trim ring of secondary mirror is used for compressing and fixing secondary mirror support tube in lens barrel, and hollow, ensure incident light unobstructed.
Secondary mirror supporting structure, mainly comprise the lens barrel that thermal expansivity is less, the Multilayer sleeve time picture frame that thermal expansivity is less, and the larger secondary mirror support tube of thermal expansivity and corresponding accessory kit, the utility model can suppress in order to space camera reflective optical system primary and secondary mirror passive thermal control, parasitic light and optics coaxially regulate.
Under different thermal environments, adopt the equidirectional extension of secondary picture frame being provided with secondary mirror or the contraction of the lens barrel being provided with primary mirror of less expansion coefficient material and less thermal expansivity, adopt the extending for the secondary mirror support tube and the above two opposite directions connecting lens barrel and time picture frame or shrink to realize the thermal compensation of primary and secondary mirror of larger expansion coefficient material, ensure that primary and secondary mirror relative axial position is constant under different thermal environments.
Secondary picture frame possesses multilayer thin walled cylinder body, and every layer of sleeve axial dimension is inconsistent, beats reflected light on primary mirror determine according to incident parallel light, parasitic light can between secondary picture frame multilayer sleeve after multiple reflections energy dropoff be inhibited.
Manufacture by secondary processing and lens barrel in secondary mirror assembly loading secondary mirror support tube, guarantee that primary mirror is coaxial with secondary mirror optics.
Process each part according to Fig. 1, Fig. 2, Fig. 3 respectively, assemble each part according to Fig. 4, the surface of each part all through surface treatment be black.
According to Fig. 3, secondary mirror 7 is loaded D place in time picture frame 2, use the little trim ring 6 of secondary mirror to compress secondary mirror 7 and fix; As secondary picture frame 2 loaded secondary mirror support tube 3 after Fig. 3, both are threaded connection time picture frame A place, and gib screw 9 is installed at connecting thread place, and secondary picture frame 2 other end and secondary mirror support tube 3 gap closely cooperate secondary picture frame B place, both guarantees stable connection.Gib screw 9 be applied to complete screw thread be equipped with after secondary mirror support tube and time picture frame after secondary fix, both guarantees install rear stable nothing and relatively rock and strengthen its degree of being connected firmly.
In Fig. 1, time picture frame can be divided into three parts, wherein illustrate A, B, C tri-place be time picture frame cone, D part be secondary mirror installing frame, and E part is for connecting the ribs of cone and secondary picture frame.
Shown in Fig. 3, note locking glue from secondary mirror support tube 3 hole for injecting glue, ensure that locking glue contacts with time picture frame 2, the rigidity of assembly shown in Fig. 3 is improved, secondary picture frame 2 is relative to secondary mirror support tube 3 rocking.
Shown in Fig. 4, to Fig. 3 mirror assembly to heart secondary processing, ensure that the contact face of cylinder is installed coaxial with secondary mirror 7, and secondary mirror support tube 3 closely cooperates with time picture frame 2.
Shown in Fig. 4, secondary mirror assembly spacer ring 4 and secondary processing completed loads in lens barrel according to the order of sequence, grinds spacer ring 4 thickness and ensures that primary and secondary and secondary mirror are at axial location interval simultaneously by repairing.After the large trim ring 5 of secondary mirror is installed in lens barrel 1 in order to fixing mirror assembly.Note locking glue from lens barrel 1 hole for injecting glue and ensure locking glue and secondary mirror component touch, flow into lens barrel 1 with the tolerance clearance of secondary mirror support tube 3.
When space camera is in thermal environment, whole camera optical system structure along with heat absorption or be released in axial direction and deform, the distance between primary and secondary mirror also changes thereupon.And as shown in Figure 4, realize with version the heat that disappears voluntarily by the less picture frame of the selection of material thermal expansivity and time picture frame 2 secondary mirror support tube 3 larger with material thermal expansion coefficient.But following thermal deformation conditions need be met:
α
1×L1+α
2×L3＝α
3×L2
Wherein:
α
1for lens barrel selected materials thermal expansivity;
α
2for secondary picture frame selected materials thermal expansivity;
α
3for secondary mirror support tube selected materials thermal expansivity;
L1 is that primary mirror outside surface center is to secondary mirror support tube and lens barrel connection place distance;
L2 is that secondary mirror support tube gos deep into lens barrel end to secondary mirror support tube and lens barrel connection place distance;
L3 is that lens barrel end distance is goed deep into secondary mirror support tube in secondary mirror outside surface center.
Claims (9)
1. a secondary mirror supporting structure, is characterized in that: described secondary mirror supporting structure comprises secondary mirror support tube, is inlaid with the lens barrel of primary mirror and is inlaid with the secondary mirror assembly of secondary mirror; Described lens barrel, secondary mirror support tube and secondary mirror assembly are from outer to inner set in together successively; The thermal expansivity of described lens barrel and the thermal expansivity of secondary mirror assembly are all less than the thermal expansivity of secondary mirror support tube.
2. secondary mirror supporting structure according to claim 1, is characterized in that: described mirror assembly is telescopic picture frame.
3. secondary mirror supporting structure according to claim 2, is characterized in that: described mirror assembly is integral cartridge formula time picture frame.
4. secondary mirror supporting structure according to claim 3, is characterized in that: described telescopic picture frame comprise that from-inner-to-outer sets gradually for install secondary mirror secondary mirror installing frame, for suppressing the multilayer thin walled cylinder body of parasitic light and being sleeved on multilayer thin walled cylinder body outermost outer ring sleeve; Described lens barrel, secondary mirror support tube and outer ring sleeve are from outer to inner set in together successively.
5. secondary mirror supporting structure according to claim 4, is characterized in that: in described multilayer thin walled cylinder body all sleeves vertically size be aniso-.
6. secondary mirror supporting structure according to claim 5, is characterized in that: described telescopic picture frame also comprises the ribs be arranged between installing frame and multilayer thin walled cylinder body and between multilayer thin walled cylinder body and outer ring sleeve.
7. the secondary mirror supporting structure according to Claims 2 or 3 or 4 or 5 or 6, is characterized in that: described telescopic picture frame also comprises the little trim ring of secondary mirror for compressing secondary mirror be arranged in secondary mirror installing frame; The little trim ring of described secondary mirror is the discoid of non-hollow.
8. secondary mirror supporting structure according to claim 7, is characterized in that: described lens barrel is provided with and the first hole for injecting glue that between lens barrel and secondary mirror support tube, gap connects; Described secondary mirror support tube is provided with and the second hole for injecting glue that between secondary mirror support tube and secondary mirror assembly, gap connects, described first hole for injecting glue and the second hole for injecting glue are threaded hole.
9. secondary mirror supporting structure according to claim 8, is characterized in that: the face that described lens barrel contacts with secondary mirror support tube is provided with surface of contact step; Described lens barrel and secondary mirror support tube are provided with spacer ring between surface of contact step; Described secondary mirror supporting structure also comprises the large trim ring of secondary mirror for compressing in secondary mirror support tube and lens barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560455.4U CN204203530U (en) | 2014-09-26 | 2014-09-26 | Secondary mirror supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420560455.4U CN204203530U (en) | 2014-09-26 | 2014-09-26 | Secondary mirror supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203530U true CN204203530U (en) | 2015-03-11 |
Family
ID=52661473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420560455.4U Withdrawn - After Issue CN204203530U (en) | 2014-09-26 | 2014-09-26 | Secondary mirror supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203530U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280850A (en) * | 2014-09-26 | 2015-01-14 | 中国科学院西安光学精密机械研究所 | Secondary mirror supporting structure |
-
2014
- 2014-09-26 CN CN201420560455.4U patent/CN204203530U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104280850A (en) * | 2014-09-26 | 2015-01-14 | 中国科学院西安光学精密机械研究所 | Secondary mirror supporting structure |
| CN104280850B (en) * | 2014-09-26 | 2017-05-03 | 中国科学院西安光学精密机械研究所 | Secondary mirror supporting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150311 Effective date of abandoning: 20170503 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20150311 Effective date of abandoning: 20170503 |