CN202486409U - Astronomical telescope back-end precision auto-focusing device - Google Patents
Astronomical telescope back-end precision auto-focusing device Download PDFInfo
- Publication number
- CN202486409U CN202486409U CN201220045166.1U CN201220045166U CN202486409U CN 202486409 U CN202486409 U CN 202486409U CN 201220045166 U CN201220045166 U CN 201220045166U CN 202486409 U CN202486409 U CN 202486409U
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- Prior art keywords
- worm gear
- focusing
- worm
- stationary magazine
- magazine creel
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- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005355 Hall effect Effects 0.000 abstract 2
- 239000011324 bead Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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Abstract
The utility model discloses a rear-end precision automatic focusing device for an astronomical telescope. The rear-end precision automatic focusing device comprises a fixing barrel, a stepping motor, a worm gear, a focusing inner barrel, a limit support, a Hall-effect switch and a control system. A guide groove extending along the axial direction is arranged on the fixing barrel, the stepping motor is mounted on the fixing barrel through a motor base, a worm is arranged at a power output end of the stepping motor, the worm gear is matched with the worm and is rotatably sleeved outside the fixing barrel through a close bead shaft system, an internal thread is arranged on the inner circumferential surface of the worm gear, the focusing inner barrel is sleeved in the fixing barrel, a threaded slider is mounted on the focusing inner barrel, positioned in the guide groove and provided with an external thread matched with the internal thread of the worm gear, the limit support is arranged on the fixing barrel, and the control system is used for receiving and processing a detection signal of the Hall-effect switch and outputting a control signal to the stepping motor. The worm gear and the worm drive the threaded slider to move in the guide groove, circumferential movement is transformed into horizontal linear movement, and the purpose of focusing is achieved.
Description
Technical field
The utility model relates to the accurate automatic focusing device in a kind of astronomical telescope rear end.
Background technology
The most of method of secondary mirror focusing that adopts of general large-scale professional astronomical telescope focus adjusting mechanism obtains; The method that adopts primary mirror and rear end focusing is also arranged for some race glasses; And most rear end focus control all adopts transmissions such as rack-and-pinion to realize; Its shortcoming is to carry overweight terminal device, and its stability and precision are all relatively poor, is prone to be not intended to run into focus adjusting mechanism in the use and makes focal length variations etc.
Summary of the invention
To the problem that prior art exists, the purpose of the utility model is to provide a kind of simple in structure, accurate automatic focusing device in the high astronomical telescope of precision rear end.
The accurate automatic focusing device in a kind of high astronomical telescope rear end that the utility model provides comprises:
Stationary magazine creel offers the gathering sill that in axial direction extends on the said stationary magazine creel;
Stepper motor is installed on the said stationary magazine creel through motor cabinet, and the clutch end of said stepper motor is provided with worm screw;
Worm gear, suitable with said worm screw, and be sleeved on outside the said stationary magazine creel through dense ball bearing shafting is rotatable, the inner peripheral surface of said worm gear is provided with internal thread;
The focusing inner core is set in the said stationary magazine creel, on the said focusing inner core thread slider is installed, and said thread slider is positioned at said gathering sill, and has on the said thread slider and the suitable external thread of the internal thread of said worm gear;
Limiting bracket is arranged on the said stationary magazine creel, and this limiting bracket has along the axially extended extension of said worm gear;
Hall switch is arranged on the said limiting bracket;
Magnet holder is arranged on the said focusing inner core;
Magnet is arranged on the said magnet holder;
Control system receives and handles the detection signal of said Hall switch, and to said stepper motor output control signal.
The utility model mainly is made up of the structures such as stepper motor, worm and gear, high precision dense ball bearing shafting and thread slider, focusing inner core and Hall switch of band segmentation, and the inner core of wherein focusing can connect different rear end equipment.The stepper motor outputting power drives thread slider through worm and gear and in gathering sill, moves, thereby accomplished the conversion of circular motion to horizontal rectilinear motion, has realized the purpose of focusing.
In addition, the utility model also have simple in structure, precision is high, double self locking property; No backlash, focus is not rotated, good stability; Load-bearing capacity is big; Easy to operate, can focusing automatically adjust, can prevent that user's collision unintentionally, extruding from causing the advantages such as focal length variations that regulated simultaneously again.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1, the utility model comprises: stationary magazine creel 1, stepper motor 3, worm gear 5, worm screw 4, focusing inner core 7, Hall switch 12, limiting bracket 14, magnet holder 15, magnet 13 and control system 11.Specific as follows:
Offer the gathering sill 10 that in axial direction extends on the stationary magazine creel 1, stepper motor 3 is installed on the stationary magazine creel 1 through motor cabinet 2, and worm screw 4 is arranged on the clutch end of stepper motor 3.Worm gear 5 is suitable with worm screw 4, and through dense ball bearing shafting 6 rotatable being sleeved on outside the stationary magazine creel 1, the inner peripheral surface of worm gear 5 is provided with internal thread.Focusing inner core 7 is set in the stationary magazine creel 1, on the focusing inner core 1 thread slider 8 is installed, and thread slider 8 is positioned at gathering sill 10, and has on the thread slider 8 and the suitable external thread of the internal thread of worm gear 5.Limiting bracket 14 is arranged on the stationary magazine creel 1, and this limiting bracket 14 has along worm gear 5 axially extended extensions.Hall switch 12 is arranged on the extension of limiting bracket 14.Magnet holder 15 is arranged on the focusing inner core 7.Magnet 13 is arranged on the magnet holder 15.
During use, stepper motor 3 rotations drive worm screw 4 rotations, and worm screw 4 drives worm gear 5 rotations again; Thread slider 8 just moves along gathering sill 10; Make focusing inner core 7 move, thereby realize the conversion of circular motion, realized the purpose of focusing to horizontal rectilinear motion along the axial straight line of focusing inner core 7.
Simultaneously, control system 11 can realize automatic focusing according to the positional information of the detection magnet 13 of Hall switch 12, and in the utility model, the system that control system 11 adopts computing machine and single-chip microcomputer to form realizes control.
Claims (1)
1. the accurate automatic focusing device in high astronomical telescope rear end is characterized in that, comprising:
Stationary magazine creel offers the gathering sill that in axial direction extends on the said stationary magazine creel;
Stepper motor is installed on the said stationary magazine creel through motor cabinet, and the clutch end of said stepper motor is provided with worm screw;
Worm gear, suitable with said worm screw, and be sleeved on outside the said stationary magazine creel through dense ball bearing shafting is rotatable, the inner peripheral surface of said worm gear is provided with internal thread;
The focusing inner core is set in the said stationary magazine creel, on the said focusing inner core thread slider is installed, and said thread slider is positioned at said gathering sill, and has on the said thread slider and the suitable external thread of the internal thread of said worm gear;
Limiting bracket is arranged on the said stationary magazine creel, and this limiting bracket has along the axially extended extension of said worm gear;
Hall switch is arranged on the said limiting bracket;
Magnet holder is arranged on the said focusing inner core;
Magnet is arranged on the said magnet holder;
Control system receives and handles the detection signal of said Hall switch, and to said stepper motor output control signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220045166.1U CN202486409U (en) | 2012-02-13 | 2012-02-13 | Astronomical telescope back-end precision auto-focusing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220045166.1U CN202486409U (en) | 2012-02-13 | 2012-02-13 | Astronomical telescope back-end precision auto-focusing device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202486409U true CN202486409U (en) | 2012-10-10 |
Family
ID=46960819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201220045166.1U Expired - Fee Related CN202486409U (en) | 2012-02-13 | 2012-02-13 | Astronomical telescope back-end precision auto-focusing device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202486409U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109116544A (en) * | 2018-10-19 | 2019-01-01 | 南通斯密特森光电科技有限公司 | Telescope single hand wheel focusing holder assembly |
CN110727076A (en) * | 2019-09-29 | 2020-01-24 | 舜宇光学(中山)有限公司 | Focusing structure |
-
2012
- 2012-02-13 CN CN201220045166.1U patent/CN202486409U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109116544A (en) * | 2018-10-19 | 2019-01-01 | 南通斯密特森光电科技有限公司 | Telescope single hand wheel focusing holder assembly |
CN109116544B (en) * | 2018-10-19 | 2024-02-23 | 南通斯密特森光电科技有限公司 | Single hand wheel focusing seat assembly for telescope |
CN110727076A (en) * | 2019-09-29 | 2020-01-24 | 舜宇光学(中山)有限公司 | Focusing structure |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20130213 |