CN107272182B - One kind being used for large aperture telescope optical thin film protecting window device - Google Patents
One kind being used for large aperture telescope optical thin film protecting window device Download PDFInfo
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- CN107272182B CN107272182B CN201710559022.5A CN201710559022A CN107272182B CN 107272182 B CN107272182 B CN 107272182B CN 201710559022 A CN201710559022 A CN 201710559022A CN 107272182 B CN107272182 B CN 107272182B
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- Prior art keywords
- window
- wind
- telescope
- cord
- film protecting
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
Abstract
The present invention provides one kind to be used for large aperture telescope optical thin film protecting window device, including double-layered slide fastener formula sealing structure and electric machine control system.Double-layered slide fastener formula sealing structure is window layer structure and keep out the wind a layer structure, including film protecting window or the cord that keeps out the wind, side frame and zipper track；Electric machine control system includes motor, spool, axis outer cover and electric-control system.A layer structure of keeping out the wind is mounted on above window layer structure.Truss telescope in Lille is strangled for plug, which is mounted on above four-way, protects primary mirror and internal optics channel, for lens cone type telescope, which is mounted on the top of body tube, replaces original glass window.The configuration of the present invention is simple is compact, light-weight, does not influence telescope service performance, effectively protects the drying and cleaning in primary mirror reflecting surface and internal optics channel.
Description
Technical field
The invention belongs to optical measuring apparatus Development Techniques fields, and in particular to one kind is used for heavy caliber astronomical telescope light
Learn film protecting window device.
Background technique
Heavy caliber astronomical telescope belongs to accurate optical device, and its primary mirror is the critical component of telescope, anti-
It penetrates face and directly receives the radiation energy from extraneous celestial body.In order to obtain good atmospheric seeing, telescope is typically mounted at
High mountain high altitude localities, the severe natural environment such as sand and dust, which can pollute primary mirror reflecting surface film plating layer, even to be damaged, and is influenced
The optical quality of telescope.
Currently, the measure for solving this technical problem is to set above primary mirror in telescope exterior design telescope dome
Primary mirror protective cover is counted, protects telescopic system and master lens system respectively, prevents the unfavorable factors such as extraneous dust storm, sleet, dust accumulation
Influence telescope.Dome and primary mirror protective cover only protect telescope in telescope storage, when carrying out astronomical observation, dome with
Primary mirror protective cover must be opened in advance, be fully exposed to entire optical system in atmospheric environment, be unfavorable for primary and secondary mirror and inside
The drying and cleaning of optical channel.Existing telescope primary mirror protective cover mainly uses the structure shape of petal type and push-pull folding
Formula is formed using aluminum thin plate splicing, is connected between thin plate using skeleton, manual or Electronic control primary mirror protective cover to open
It closes, structure bulky is complicated, increases the design difficulty of telescope.Existing primary mirror protection cover structure is only applicable to plug and strangles Lille
Truss-like telescope, for closed lens cone type telescope, push-pull folding and petal type structure are infeasible.Petal type structure
Each valve requires an opening device, and opening speed is slow, and synchronism cannot be guaranteed.Moreover primary mirror protective cover is in
Telescope eminence, manual operation bring inconvenience to staff.Guarantee telescope is when carrying out astronomical observation, optical system
The drying of system and clean performance, there is presently no a kind of reliable solutions.
Summary of the invention
The present invention provides a kind of zip mode optical thin film protective devices for heavy caliber astronomical telescope primary mirror.It is used
Film is optical grade polyimide material, material spectrum transmitance, transmission wavefront, thermal expansion coefficient, the mechanical performance etc.
All meet the requirement in telescope work as optical window, zipper seal performance is good, can not open film window
Optical observation is carried out in the case where layer, and plays the role of moisture-proof, proofing dust and protecting.Keep out the wind casing ply above Window layer, cord
Material is polyester fiber, and the performance of window can be effectively protected when telescope does not work, and is prevented on top pendant object or dome
Remaining sleet, dust stratification etc. smash film window.Meanwhile the window structure is simple, and it is light-weight, the usability of telescope is not influenced
Energy.
The technical solution adopted by the present invention are as follows: one kind is used for large aperture telescope optical thin film protecting window device, including
Double-layered slide fastener formula sealing structure and electric machine control system；Double-layered slide fastener formula sealing structure is window layer structure and keeps out the wind a layer structure,
Including the cord that keeps out the wind, film protecting window, zipper track side frame, side frame and four zipper tracks；Electric machine control system includes electricity
Machine, two spools, axis outer cover and electric machine control system；The material of film protecting window is optical grade polyimides, the material
Requirement as optical window when performance can satisfy telescope work, can in the case where not opening film protecting window into
Row optical observation, and play the role of moisture-proof, proofing dust and protecting；Keep out the wind cord material be polyester fiber；Layer structure of keeping out the wind is installed
In the top of Window layer；Truss structure telescope in Lille is strangled for plug, zipper track side frame, side frame and axis outer cover are as the device
Skeleton be mounted on the top of four-way, for the lens cone type structure of sealing, which is mounted on the top of body tube；Four
It is located at the inside of left and right zipper track side frame on the outside of root zipper track, inside connects with film protecting window or the cord that keeps out the wind；Electricity
Machine drives spool rotation and four zipper tracks are flexible realizes the rapidly opened and closed of keep out the wind cord and film protecting window.
Further, the material of film protecting window is optical grade polyimides, the material spectrum transmitance, transmitted wave
Before, thermal expansion coefficient, mechanical properties all meet the requirement as optical window in telescope work, can not open
Optical observation is carried out in the case where film protecting window, and plays the role of moisture-proof, proofing dust and protecting；Have above film protecting window
Keep out the wind cord, and the material for the cord that keeps out the wind is polyester fiber, and the performance of window can be effectively protected when telescope does not work, and prevents
Remaining sleet, dust stratification on object or dome are fallen above only smashes film window.
Further, the double-layered slide fastener formula sealing structure, opening and closing process by motor drive spool rotation with
The flexible realization of four zipper tracks, when telescope does not work, double-layer structure is in closed state, and the cord that keeps out the wind is for protecting
The performance of film protecting window is protected, at work, the spool and four zipper tracks of the cord that keeps out the wind above motor drive open gear
Air curtain cloth；When telescope does not work, motor drive again top keep out the wind casing ply spool and four zipper tracks, closing are kept out the wind
Cord；Film protecting window is typically in closed state, window is only just opened when primary mirror needs to clear up, and to open thin
It must be turned on the cord that keeps out the wind before film protecting window.
Further, truss structure telescope in Lille is strangled for plug, zipper track side frame, side frame and axis outer cover are as the dress
The skeleton set is mounted on the top of four-way, and for the lens cone type structure of sealing, zipper track side frame, side frame and axis outer cover are mounted on
The top of body tube.
The present invention is compared compared to existing dome with primary mirror protective cover, is had the advantage that
1. this is simple and compact for structure, light-weight present invention employs zip mode film window structure, telescope is not influenced
Service performance；
2. applicability of the present invention is wider, looking in the distance for the truss structure of closed-type circular lens barrel structure or open type can be applied to
Mirror；
3. the thin-film material that the present invention uses meets optical window requirement, zipper seal performance is good, and telescope is not
Optical observation still can be carried out in the case where opening film window layer, and moisture-proof, dust-proof effect can be played.
Detailed description of the invention
Fig. 1 is the optical thin film protecting window device figure being installed on four-way；
Fig. 2 is the optical thin film protecting window device figure being installed on body tube；
Fig. 3 is film protecting window diagrammatic cross-section.
In figure: 1 is the cord that keeps out the wind, and 2 be film protecting window, and 3 be axis outer cover, and 4 be spool, and 5 be motor, and 6 be zipper rail
Road side frame, 7 be side frame, and 8 be four zipper tracks, and 9 be four-way, and 10 be body tube.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
Fig. 1 is the film protecting window device figure being installed on four-way, and Fig. 2 is the film protection being installed on body tube 10
Window device figure, two figures are distinguished as different according to telescope configuration and take different modes.Film protective device includes double
Layer zip mode sealing structure and electric machine control system；Double-layered slide fastener formula sealing structure is window layer structure and a layer structure of keeping out the wind, tool
Body includes keep out the wind cord 1, film protecting window 2, zipper track side frame 6,7, four zipper tracks 8 of side frame, 5, two, motor volumes
Axis 4, axis outer cover 3 and electric machine control system；Layer structure of keeping out the wind is mounted on the top of Window layer；The material of film protecting window 2 is
The performance of optical grade polyimides, material spectrum transmitance, transmission wavefront, thermal expansion coefficient, the mechanical performance etc. can
Requirement when meeting telescope work as optical window, can carry out optics in the case where not opening film protecting window 2
Observation, and play the role of moisture-proof, proofing dust and protecting；Keep out the wind cord 1 material be polyester fiber, can be when telescope work
The performance of window is effectively protected, prevents remaining sleet, dust stratification etc. on top pendant object or dome from smashing film protecting window 2.
Truss structure telescope in Lille is strangled for plug, zipper track side frame 6, side frame 7 and axis outer cover 3 are mounted on as the skeleton of the device
The top of four-way 9, for the lens cone type structure of sealing, zipper track side frame 6, side frame 7 and axis outer cover 3 are mounted on body tube 10
The top.It is located at the inside of left and right zipper track side frame 6 on the outside of four zipper tracks 8, inside and film protecting window 2 or keeps out the wind
Cord 1 connects, film protecting window 2 and four piece zipper tracks 8 and electric machine control system realization window of the cord 1 by two sides that keep out the wind
The opening and closing of mouth, window caudal are mounted on the spool 4 of electric machine control system, and head side is equipped with window bottom edge, are used for protecting window
Performance；The rotation of spool 4 and keep out the wind cord 1 and the film of flexible realization of four zipper tracks 8 is driven to protect window by motor 5
Mouthfuls 2 it is rapidly opened and closed.When telescope does not work, keeps out the wind cord 1 and 2 layers of film protecting window are in closed state, keep out the wind
Cord 1 is used for the performance of protective film protecting window 2；When telescope carries out optical observation, keep out the wind cord for the drive of motor 5 top
Level 1 volume axis 4 and four zipper tracks 8, open the cord 1 that keeps out the wind, and the energy of extraneous astronomical radiation is reached through film protecting window 2
Primary mirror reflecting surface；When telescope does not work, motor 5 drives the spool 4 and four zipper tracks 8 of the cord 1 that keeps out the wind of top again,
Closing is kept out the wind cord 1, and protective film protecting window 2 is used for；Film protecting window 2 is typically in closed state, only in primary mirror
It is just in the open state when needing to clear up or safeguard, and must be turned on the cord that keeps out the wind before opening film protecting window 2.
Fig. 3 is 2 diagrammatic cross-section of film protecting window, including the cord 1 that keeps out the wind, film protecting window 2, motor 5, zipper rail
Road side frame 6, four zipper tracks 8.The film protecting window 2 is located at 10 top of four-way 9 or body tube, keeps out the wind 1, cord
Above film protecting window 2.Four zipper tracks 8 are by zipper track side frame 6 and film protecting window 2 or screen
Cloth 1 realizes that sealing connects, and plays the role of moisture-proof, proofing dust and protecting.Two motors 5 drive respectively double-layer structure spool 4 rotate and
Four zipper tracks 8 are flexible to realize the rapidly opened and closed of keep out the wind cord 1 or film protecting window 2.
Claims (3)
1. a kind of optical thin film protecting window device for large aperture telescope, it is characterized in that: including that double-layered slide fastener formula seals
Structure and electric machine control system；Double-layered slide fastener formula sealing structure is window layer structure and keep out the wind a layer structure, including the cord that keeps out the wind
(1), film protecting window (2), zipper track side frame (6), side frame (7) He Sigen zipper track (8)；Electric machine control system includes
Motor (5), two spools (4), axis outer cover (3) and electric machine controller；The material of film protecting window (2) is that optical grade polyamides is sub-
Amine, the requirement when performance of the material can satisfy telescope work as optical window can not open film protection window
Optical observation is carried out in the case where mouth (2), and plays the role of moisture-proof, proofing dust and protecting；The material of cord (1) of keeping out the wind is that polyester is fine
Dimension；Layer structure of keeping out the wind is mounted on the top of Window layer；Zipper track side frame (6), side frame (7) and axis outer cover (3) are used as the device
Skeleton be mounted on the top that plug strangles the four-way (9) of Lille truss structure telescope, or be mounted on the lens cone type structure of sealing
Body tube (10) the top；Be located at the inside of left and right zipper track side frame (6) on the outside of four zipper tracks (8), inside with
Film protecting window (2) or the cord that keeps out the wind (1) connect；Motor (5) drives spool (4) rotation and four zipper tracks (8) flexible
Realization is kept out the wind the rapidly opened and closed of cord (1) and film protecting window (2).
2. the optical thin film protecting window device according to claim 1 for large aperture telescope, it is characterized in that: film
The material of protecting window (2) is optical grade polyimides, material spectrum transmitance, transmission wavefront, thermal expansion coefficient, the mechanicalness
Energy aspect all meets the requirement in telescope work as optical window, can be in the feelings for not opening film protecting window (2)
Optical observation is carried out under condition, and plays the role of moisture-proof, proofing dust and protecting；Cord (1) is kept out the wind above film protecting window (2),
Keep out the wind cord (1) material be polyester fiber, the performance of window can be effectively protected when telescope does not work, prevent top
Remaining sleet, dust stratification smash film window on pendant object or dome.
3. the optical thin film protecting window device according to claim 1 for large aperture telescope, it is characterized in that: described
Double-layered slide fastener formula sealing structure, opening and closing process by motor (5) drive spool (4) rotation and four zipper tracks (8)
Flexible realization, when telescope does not work, double-layer structure is in closed state, the cord that keeps out the wind (1) for protective film protect
The performance of window (2) is protected, at work, spool (4) the He Sigen zipper track for cord (1) of keeping out the wind above motor (5) drive
(8), it opens and keeps out the wind cord (1)；When telescope does not work, motor (5) drives keep out the wind casing ply spool (4) and four of top again
Cord (1) is kept out the wind in root zipper track (8), closing；Film protecting window (2) is in close state, and only needs to clear up in primary mirror
When just open window, and to open and must be turned on keep out the wind cord (1) before film protecting window (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710559022.5A CN107272182B (en) | 2017-07-11 | 2017-07-11 | One kind being used for large aperture telescope optical thin film protecting window device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710559022.5A CN107272182B (en) | 2017-07-11 | 2017-07-11 | One kind being used for large aperture telescope optical thin film protecting window device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107272182A CN107272182A (en) | 2017-10-20 |
| CN107272182B true CN107272182B (en) | 2019-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710559022.5A Active CN107272182B (en) | 2017-07-11 | 2017-07-11 | One kind being used for large aperture telescope optical thin film protecting window device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107272182B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109960030A (en) * | 2017-12-14 | 2019-07-02 | 哈尔滨新光光电科技有限公司 | It is a kind of big temperature range work heavy-caliber optical system without thermalization method |
| CN108490601B (en) * | 2018-02-05 | 2020-12-29 | 佛山科学技术学院 | Window sealing device of large-caliber telescope |
| CN112433324B (en) * | 2020-11-17 | 2021-09-14 | 中国科学院西安光学精密机械研究所 | Dual-power parallel driving protective lens replacing device based on lever principle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05311395A (en) * | 1992-05-11 | 1993-11-22 | Citizen Watch Co Ltd | Antireflection coating film |
| CN102662232A (en) * | 2012-03-09 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Novel power-driven protective cover for primary mirror of large aperture telescope |
| CN104297917A (en) * | 2014-10-22 | 2015-01-21 | 中国科学院光电技术研究所 | Shutter-type protective device used for primary lens cone of telescope |
| CN106773004A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | Heavy caliber altazimuth telescope collapsible formula dust guard |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6910308B2 (en) * | 2003-02-04 | 2005-06-28 | Ilc Dover Lp | Inflatable rigidizable boom |
-
2017
- 2017-07-11 CN CN201710559022.5A patent/CN107272182B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05311395A (en) * | 1992-05-11 | 1993-11-22 | Citizen Watch Co Ltd | Antireflection coating film |
| CN102662232A (en) * | 2012-03-09 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Novel power-driven protective cover for primary mirror of large aperture telescope |
| CN104297917A (en) * | 2014-10-22 | 2015-01-21 | 中国科学院光电技术研究所 | Shutter-type protective device used for primary lens cone of telescope |
| CN106773004A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院长春光学精密机械与物理研究所 | Heavy caliber altazimuth telescope collapsible formula dust guard |
Non-Patent Citations (1)
| Title |
|---|
| 聚酰亚胺材料的力学化学特性及其超高速碰撞效应研究;陈华;《中国博士学位论文全文数据库》;20141015;全文 * |
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| CN107272182A (en) | 2017-10-20 |
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