CN202003051U - Adjusting device of optical fiber coupling lens - Google Patents
Adjusting device of optical fiber coupling lens Download PDFInfo
- Publication number
- CN202003051U CN202003051U CN2010206794755U CN201020679475U CN202003051U CN 202003051 U CN202003051 U CN 202003051U CN 2010206794755 U CN2010206794755 U CN 2010206794755U CN 201020679475 U CN201020679475 U CN 201020679475U CN 202003051 U CN202003051 U CN 202003051U
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- screw thread
- ring
- lens
- rifled tube
- coupling
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Abstract
The utility model provides an adjusting device of an optical fiber coupling lens, comprising a coupling lens. The coupling lens is arranged in a lens seat having outer screw threads, and the lens seat having an outer screw threads tube is screwed in a lens frame having an inner screw thread tube; half of the inner screw thread tube on the lens frame is half an inner screw thread tube, and the other half is a plastic half ring. The inner diameter of the plastic half ring is equal to the root circle diameter of the screw thread of the inner screw thread tube, positioning plates used for positioning the plastic half ring are arranged at the both sides of the half internal screw thread tube and the plastic half ring respectively, and the side of the inner screw thread tube on the lens frame is equipped with an opening; the plastic half ring and the half inner screw thread tube can always be jointed with the lens seat via an adjusting fixing bolt in the opening. The effects of the utility model are that, the lens seat is always jointed with the screw threads tightly in the rotation process, there are not existed gaps, and the position of the lens seat will not change after being adjusted and locked; the problem is solved that when being adjusted, the coupling lens occurs excursion due to the gaps between the screw threads, the light quality is improved, and the coupling efficiency is made achieve the best.
Description
Technical field
The utility model relates to the fibre-coupled mirrors regulating device of a kind of optical-mechanical, particularly fiber coupler.
Background technology
Fiber coupler is the important component part of high power 532nm green laser.Its function is, changes beam diameter and minimum and with the light beam numerical aperture of trying one's best little laser output beam is coupled in the light in optical power loss.Fiber coupler can make the numerical aperture of optical fiber delivery outlet less than 0.1.The optical numerical value aperture of optical fiber has defined the maximum angle of divergence of optical fiber output.The optical numerical value aperture that is used for the multimode optical fiber (fiber core diameter 0.6mm) of Lasar prostate operation is 0.22.The light beam numerical aperture minimum in optical power loss and that try one's best little that is used for fiber coupler is coupled to laser output beam in the optical fiber.
Fiber coupler mainly is made up of coupling mirror and optical fiber, and laser converges on the fibre-optical splice by the focussing force of coupling mirror, exports by optical fiber again.When the focus that converges when laser was beaten center at fibre-optical splice, this moment, coupling efficiency was the highest, and should be power density evenly continuous circular light spot by the hot spot that optical fiber projects on the optical screen this moment.If the focus of laser does not converge on the fibre-optical splice, then can reduce coupling efficiency, the bright dipping light intensity is descended; Though if the focus of laser converges on the fibre-optical splice, do not have to beat at the center of fibre-optical splice, it then becomes annular by the hot spot that optical fiber projects on the optical screen, power density is inhomogeneous, goes out light quality and descends.Therefore, the coupling mirror of fiber coupler all can be regulated usually, by regulating the distance between coupling mirror and the optical fiber, makes coupling efficiency reach best.
Fig. 1 is the structural drawing of common fiber coupler, its structure is made up of fibre-optical splice 1 and coupling mirror regulating device, the regulating device of coupling mirror is to have externally threaded microscope base 4 to be screwed into the mirror holder 5 that has internal thread and to form, coupling mirror 2 is installed on the microscope base 4, clockwise rotating microscope base 4 makes coupling mirror 2 near fibre-optical splice 1, rotate counterclockwise microscope base 4 and make 2 of coupling mirrors, reach the adjusting purpose with this away from fibre-optical splice 1.After adjusting finished, the holding screw of tightening mirror holder 5 tops was with thread lock.The shortcoming of this kind structure is, there is certain interval in screw thread pair, must make microscope base generation certain deviation after tightening the holding screw at top, and as Fig. 2, shown in Figure 3, behind the locking holding screw, skew has taken place the central axis of coupling mirror.The laser that microscope base 4 after being offset is focused on also just and fibre-optical splice produced certain deviation, this is coupled to optical fiber is very disadvantageous.Some railway grease of filling can have improvement to a certain degree in screw thread, but can not solve the problem of locking hour offset at all, and do not allow to use owing to railway grease has certain volatility in some application scenarios.
Summary of the invention
At structural deficiency in the prior art, the purpose of this utility model provides a kind of fibre-coupled mirrors regulating device, and the problem of microscope base skew improves coupling efficiency when being beneficial to effectively solve locking.
For achieving the above object, the technical solution adopted in the utility model provides a kind of optical fiber coupling regulating device, this device includes coupling mirror, coupling mirror is installed in to be with in the externally threaded microscope base, the microscope base that has male-pipe is screwed on the mirror holder that has rifled tube, wherein: half of rifled tube is half rifled tube on the described mirror holder, second half is the plastics semi-ring, the internal diameter of plastics semi-ring equals circular diameter at the bottom of the tooth of rifled tube screw thread, be separately installed with location-plate to plastics semi-ring location in the both sides of half rifled tube and plastics semi-ring, the rifled tube side is provided with an opening on the mirror holder, and the adjusting gib screw by opening part can make plastics semi-ring and half rifled tube microscope base of fitting all the time.
Effect of the present utility model is that microscope base fits tightly with screw thread in rotary course all the time, there is not the gap, the position of microscope base does not change when regulating back locking, solved when regulating coupling mirror because thread pitch causes the problem of locking hour offset, improved and light quality, made coupling efficiency reach best.
Description of drawings
As Fig. 1 is fiber coupler section of structure commonly used;
Fig. 2 is a fiber coupler locking preceding thread commonly used gap synoptic diagram;
Fig. 3 is a fiber coupler locking rear thread commonly used gap synoptic diagram;
Fig. 4 is the utility model fibre-coupled mirrors regulating device structural drawing;
Fig. 5 is the utility model fibre-coupled mirrors regulating device sectional view.
Among the figure:
1, fibre-optical splice 2, coupling mirror 4, microscope base 5, mirror holder
6, plastics semi-ring 7, location-plate 8, lock-screw
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated fibre-coupled mirrors regulating device structure of the present utility model.
As Fig. 4, shown in Figure 5, novel optical fiber coupling mirror regulating device of the present utility model is the problem of coupling mirror desaxe when making microscope base and mirror holder remain fit-state to solve conventional threads and regulate locking by a half-thread structure that has a plastics semi-ring.
Fibre-coupled mirrors regulating device of the present utility model, this device includes coupling mirror 2, coupling mirror 2 is installed in to be with in the externally threaded microscope base 4, the microscope base 4 that has male-pipe is screwed on the mirror holder 5 that has rifled tube, half of rifled tube is half rifled tube on the described mirror holder 5, second half is a plastics semi-ring 6, the internal diameter of plastics semi-ring 6 equals circular diameter at the bottom of the tooth of rifled tube screw thread, be separately installed with location-plate 7 to plastics semi-ring 6 location in the both sides of half rifled tube and plastics semi-ring 6, the rifled tube side is provided with an opening on the mirror holder 5, and the adjusting gib screw by opening part can make plastics semi-ring 6 and half rifled tube microscope base 4 of fitting all the time.
Half rifled tube on the described mirror holder 5 is a fine thread.The central axis of the mirror holder 5 of described plastics semi-ring 6 and half rifled tube formation and coupling mirror are on same central axis.
Fibre-coupled mirrors regulating device of the present utility model is arranged on the fiber coupler, and fiber coupler is to comprise fibre-optical splice and coupling mirror regulating device two large divisions, and wherein coupling mirror 2 is installed on the coupling mirror regulating device.The coupling mirror regulating device is made up of coupling mirror 2, microscope base 4, mirror holder 5, plastics semi-ring 6, location-plate 7, lock-screw 8.Wherein the latter half of circular hole is a fine thread in the middle of the mirror holder 5, the first half is equipped with a plastics semi-ring 6, the internal diameter of plastics semi-ring approximates circular diameter at the bottom of the tooth of screw thread, a location-plate 7 is respectively installed in its both sides, give the plastics semi-ring 6 location, there is an opening side of rifled tube on the mirror holder 5, regulates the tightness of plastics semi-ring 6.
Fibre-coupled mirrors regulating device function implementation procedure of the present utility model is:
At first microscope base 4 is screwed in the mirror holder 5 that assembles, turn lock-screw 8 a little, the lateral opening of mirror holder 5 diminishes, half screw thread of microscope base 4 applying plastics semi-rings 6 and mirror holder 5, half screw thread between microscope base 4 and the mirror holder 5 is subjected to 6 compressings of plastics semi-ring at this moment, has eliminated thread pitch.The distance that rotation microscope base 4 is regulated coupling mirror 2 and fibre-optical splice 1, the central axis of the central axis of mirror holder 5 and coupling mirror 2 is constant all the time in the whole adjustment process, on same central axis.When needing locking, lock-screw 8 is got final product.
Claims (3)
1. fibre-coupled mirrors regulating device, this device includes coupling mirror, coupling mirror is installed in to be with in the externally threaded microscope base, the microscope base that has male-pipe is screwed on the mirror holder that has rifled tube, it is characterized in that: half of the last rifled tube of described mirror holder (5) is half rifled tube, second half is plastics semi-ring (6), the internal diameter of plastics semi-ring (6) equals circular diameter at the bottom of the tooth of rifled tube screw thread, be separately installed with location-plate (7) to plastics semi-ring (6) location in the both sides of half rifled tube and plastics semi-ring (6), mirror holder (5) is gone up the rifled tube side and is provided with an opening, and the adjusting gib screw by opening part can make plastics semi-ring (6) and half rifled tube microscope base (4) of fitting all the time.
2. fibre-coupled mirrors regulating device according to claim 1 is characterized in that: half rifled tube on the described mirror holder (5) is a fine thread.
3. fibre-coupled mirrors regulating device according to claim 1 is characterized in that: the central axis of the mirror holder (5) of described plastics semi-ring (6) and half rifled tube formation and coupling mirror are on same central axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206794755U CN202003051U (en) | 2010-12-27 | 2010-12-27 | Adjusting device of optical fiber coupling lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206794755U CN202003051U (en) | 2010-12-27 | 2010-12-27 | Adjusting device of optical fiber coupling lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202003051U true CN202003051U (en) | 2011-10-05 |
Family
ID=44705788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206794755U Expired - Lifetime CN202003051U (en) | 2010-12-27 | 2010-12-27 | Adjusting device of optical fiber coupling lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202003051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866468A (en) * | 2012-09-06 | 2013-01-09 | 中国科学院上海光学精密机械研究所 | Hollow photonic crystal optical fiber gas absorption cell device and manufacturing method thereof |
| CN106725261A (en) * | 2017-01-13 | 2017-05-31 | 苏新军 | Treatment mirror is peeped in a kind of fixed optical fiber |
-
2010
- 2010-12-27 CN CN2010206794755U patent/CN202003051U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866468A (en) * | 2012-09-06 | 2013-01-09 | 中国科学院上海光学精密机械研究所 | Hollow photonic crystal optical fiber gas absorption cell device and manufacturing method thereof |
| CN106725261A (en) * | 2017-01-13 | 2017-05-31 | 苏新军 | Treatment mirror is peeped in a kind of fixed optical fiber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 300384 the Binhai New Area of Tianjin Huayuan Industrial Area six Haitai development road 6 Haitai green industry base building L Room 301 Patentee after: Maude (Tianjin) scientific instruments Limited by Share Ltd Address before: 300384 Tianjin Haitai Nankai District Huayuan Industrial Development Zone Six Road No. 6 Haitai green industry base F 8 door 101 seat Patentee before: Lambda Tianjin Scient Instrument Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111005 |