CN205920243U - Fiber coupler based on optical flat carries out minute adjustment - Google Patents
Fiber coupler based on optical flat carries out minute adjustment Download PDFInfo
- Publication number
- CN205920243U CN205920243U CN201620836806.9U CN201620836806U CN205920243U CN 205920243 U CN205920243 U CN 205920243U CN 201620836806 U CN201620836806 U CN 201620836806U CN 205920243 U CN205920243 U CN 205920243U
- Authority
- CN
- China
- Prior art keywords
- optical flat
- lens
- adjusting screw
- fiber coupler
- screw rod
- 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.)
- Active
Links
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model discloses the problem that will solve provides a fiber coupler based on optical flat carries out minute adjustment, including casing and the lens mount that sets gradually in the casing, lens adjustable ring, optical flat seat and optic fibre, screw thread that the lens mount passes through the outer lane with the screw thread intermeshing of lens adjustable ring inner circle is fixed, be provided with coupling lens in the lens mount, be provided with the optical flat in the optical flat seat, be provided with the first through -hole of ammunition feed nature thing installation on the optical flat seat, optical flat seat rear side contacts with adjusting screw, under elasticity thing and adjusting screw's combined action, optical flat seat elastic fixation in in the casing, through rotating lens adjustable ring and the position of regulation adjusting screw in order to change the light ray focused facula. The utility model provides a based on the fiber coupler of optical flat, simple structure is reliable, and low cost adjusts the conventional coupler of ratio of precision and improves 27 times of left and right sides, is the ideal device of little core diameter fiber optic coupling.
Description
Technical field
This utility model belongs to laser technology field, is related to a kind of fiber coupler, more particularly, to a kind of flat based on optics
Plate carries out the fiber coupler of fine adjustment.
Background technology
Laser technology has been widely used in the fields such as medical treatment, industry, scientific research and national defence at present, in these application necks
It is often necessary to by laser coupled in optical fiber, realize optical fiber flexible transfer laser in domain.And fiber coupler is exactly realization will swash
Optically coupling to the Primary Component in optical fiber.
The fiber coupler of main flow is generally by vertical, horizontal level the side directly adjusting lens or optical fiber at present
Formula realizes Best Coupling.The governor motion of this fiber coupler is closely-pitched adjusting screw rod, and degree of regulation is that 0.2～0.3mm/ encloses,
It is 200um and above application demand that this structure can meet optical fiber core diameter substantially.When need to be coupled to core diameter be 200um with
Under optical fiber when, generally complete to adjust using the adjustment frame of higher precision rank or servo electrical machinery system, then adopt glue
Lens or optical fiber are completely fixed, complex process, high cost, on-site maintenance is poor.
Therefore, for of the prior art not enough it is necessary to provide a kind of new fiber coupler to carry out high-precision
Adjust.
Utility model content
Problem to be solved in the utility model is the problem overcoming prior art to exist, and provides one kind to be based on optical flat
Carry out the fiber coupler of fine adjustment, solve that degree of regulation in prior art is high, baroque problem.
For solving above-mentioned technical problem, technical solution of the present utility model is achieved in that one kind is based on optics
Flat board carries out the fiber coupler of fine adjustment, and the lens mount 2 setting gradually including housing 1 and in housing 1, lens are adjusted
Ring 3, optical flat seat 4 and optical fiber 5, the screw thread that described lens mount 2 passes through outer ring is mutual with the screw thread of described lens regulation ring 3 inner ring
Be meshed fixation, is provided with coupled lens 20, is provided with optical flat 40, institute in described optical flat seat 4 in described lens mount 2
State and the first through hole 41 installed for elastic 7 is provided with optical flat seat 4, with adjusting screw rod 6 on rear side of described optical flat seat 4
Contact, under the collective effect of elastic 7 and adjusting screw rod 6, the flexible fastening of described optical flat seat 4 in described housing 1,
Change the position of the focal beam spot of light by relay lens regulation ring 3 and regulation adjusting screw rod 6.
Further, the front end of described housing 1 is provided with the first cylindrical hole 10 for mounted lens seat 2, described housing 1
Rear end be provided with the second cylindrical hole 11 for installing optical fiber 5, described first cylindrical hole 10 and described second cylindrical hole 11 are
Coaxial configuration.
Further, the quantity of described adjusting screw rod 6 is three, and the middle part of described adjusting screw rod 6 is provided with fine thread,
One end of described adjusting screw rod 6 is hemispherical, is butted on rear side of described optical flat seat 4, the other end setting of described adjusting screw rod 6
There is regulating tank, pass being partially exposed at outside described housing 1 of described housing 1.
Further, it is installed with screw 8 in described elastic 7, before described elastic 7 is compressed in described optical flat seat 4
Side, described screw 8 penetrate described first through hole 41 after load nut in complete fix.
Further, described lens regulation ring 3 is hollow cylindrical structure, the outer ring annular knurl of described lens regulation ring 3, institute
The two ends stating lens regulation ring 3 are provided with the groove 30 installed for sealing ring.
Further, described lens mount 2 is hollow cylindrical structure, and the inner side of described lens mount 2 is provided with stepped hole and supplies
Coupled lens 20 are installed.
Further, described housing 1 side is provided with stopper slot 12, and position-limitting pin 9 passes through described stopper slot 12 and fixes
In the pin hole 21 of described lens mount 2.
Further, the material of described optical flat 40 is crystal or glass, and surface is through polishing, and is coated with anti-reflective
Penetrate film.
This utility model can bring following beneficial effect:
1st, this utility model can produce the characteristic of translation using light after the optical flat tilting, in coupled lens and
Add one block of tiltable optical flat between optical fiber, focal beam spot is realized by the angle of inclination of regulation optical flat relatively fine
The displacement of core, thus realize the purpose of Best Coupling.
2nd, this utility model utilizes lens regulation ring to drive coupled lens seat to produce axial displacement, thus adjusting lens focus
Position with respect to fiber end face.
3rd, this apparatus structure is simple and reliable, with low cost, and degree of regulation improves 27 times about than conventional bonder, is little core
The ideal device of footpath optical fiber coupling.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of description, and in order to allow above and other purpose of the present utility model, feature
Can become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description
Fig. 1 is the know-why schematic diagram of this utility model preferred embodiment；
Fig. 2 is the top view of this utility model preferred embodiment；
Fig. 3 is the front view of this utility model preferred embodiment；
Fig. 4 is the rearview of this utility model preferred embodiment；
Fig. 5 is the profile of this utility model preferred embodiment；
Fig. 6 is the positive structure schematic of optical flat in this utility model preferred embodiment；
Fig. 7 is the structure schematic diagram of optical flat in this utility model preferred embodiment；
Fig. 8 is the structural representation of adjusting screw rod in this utility model preferred embodiment；
Fig. 9 is the structural representation of optical flat seat in this utility model preferred embodiment.
In figure:
1: housing 10: the first cylindrical hole 11: the second cylindrical hole 12: stopper slot
2: lens mount 20: coupled lens 21: pin hole 22: lens mount groove
3: lens regulation ring 30: lens adjust ring groove
4: optical flat seat 40: optical flat 41: first through hole 5: optical fiber
6: adjusting screw rod: 7: elastic 8: screw 9: position-limitting pin
Specific embodiment
Technological means, creation characteristic, reached purpose and effect for this utility model realization is expanded on further are readily apparent from
Understand, below in conjunction with accompanying drawing and preferred embodiment, to specifically real according to the fiber coupler based on optical flat for this utility model
Apply mode, structure, feature and its effect, describe in detail as follows.
The principle of the technical scheme that this utility model is adopted is as shown in Figure 1.It is described as follows: Ray Of Light is vertical to deviate
Incide on a surface of the optical flat that thickness is t in the direction α angle of optical flat, due to refractive index n of optical flatg
With air refraction nairDifference, light can reflect after entering optical flat, and light is refracted into flat board and flat with β angle
Along straightline propagation in plate, when light is from the another one surface transmission air inlet of optical flat, the position of light is more original
Position will produce displacement δ d.Knowable to optical principle, there is following relation in above-mentioned parameter:
sinα*nair=sin β * ng
δ d=cos α * (tg α-tg β) * t
By above-mentioned two relational expressions it can be seen that
1st, displacement after optical flat for the light and the proportional relation of slab-thickness.Therefore can be by using not
The flat board of stack pile reaches the purpose changing resolution and adjusting total amount.
2nd, when light with low-angle incident when, δ d and the proportional relation of incident angle.This means in certain angle model
When being adjusted in enclosing, effect is reliable and stable.
Following table is the result using zemax quantitative simulation:
Can be seen that in 5 ° of range of accommodation according to the data of upper table, the total displacement amount of light reaches 81um, bonder
The installing hole of the lens mount in shell will coaxially will be processed with optical fiber installing hole, in fact, due to there is mismachining tolerance and dress
Join error, always there is a certain amount of axle center drift condition, in general, global error can control in the range of 50um, this
Mean that the range of accommodation needing 50um, and the structure of the application, regulated quantity can be made to reach 80um, so meeting fibre core
A diameter of 200um and following optical fiber coupling demand.
Degree of regulation aspect, adjusting screw rod adopts three modes, and the layout of three adjusting screw rods substantially becomes isosceles right angle three
Angular, typically using right-angled apices as the strong point, another 2 points is point of adjustment, with the strong point and regulation dot spacing as 25mm, adjusts
As a example the pitch of screw rod is the adjustment mirror holder of commercial grade of 0.2mm, angle precision is 0.46 °/circle, converts the displacement for light
Precision is 7.36um/ circle, is 27 times of degree of regulation (0.2mm/ circle) of conventional fiber bonder, can meet a diameter of
The optical fiber coupling regulatory demand of below 200um.
As shown in figure 5, a kind of fiber coupler carrying out fine adjustment based on optical flat described in the utility model, tool
Body includes housing 1 and the lens mount 2 setting gradually in housing 1, lens regulation ring 3, optical flat seat 4 and optical fiber 5, its
In, the front end of housing 1 is provided with the first cylindrical hole 10 for mounted lens seat 2, and the rear end of housing 1 is provided with for installing light
Fine 5 the second cylindrical hole 11, the first cylindrical hole 10 and the second cylindrical hole 11 are coaxial configuration, and housing is in setting lens regulation ring 3
Place opens up and jagged uses for relay lens regulation ring 3.
Lens mount 2 is intermeshed fixation by the screw thread of the screw thread of outer ring and lens regulation ring 3 inner ring, and lens mount 2 is sky
Heart cylindrical-shaped structure, is provided with stepped hole in lens mount 2, coupled lens 20 are fixed on step in the hole, lens mount 2 are provided with recessed
Groove 22 is put into for sealing ring, to prevent dust from entering housing；Lens regulation ring 3 is hollow cylindrical structure, lens regulation ring 3
Outer ring annular knurl, for anti-skidding, the two ends of lens regulation ring 3 are provided with the groove 30 installed for sealing ring, place dust and enter shell
In vivo, housing 1 side is provided with stopper slot 12, and position-limitting pin 9 passes through stopper slot 12 and is fixed on the pin hole 21 of lens mount 2
Interior, position-limitting pin can give a range of slip in stopper slot 12.Setting position-limitting pin is in order to prevent lens mount with lens
The rotation of regulation ring and rotate, now, when relay lens regulation ring, the screw thread of its inner ring can drive lens mount outer ring
Screw thread is so that lens mount produces axial displacement, thus adjusting the position that lens focus is with respect to fiber end face.And lens are using
In can be selected according to practical situation, can be spherical lenss, non-spherical lens or post lens.
As shown in Figure 6, Figure 7, it is provided with optical flat 40 in optical flat seat 4, optical flat seat 4 is provided with for elasticity
The first through hole 41 that thing 7 is installed, has adjusting screw rod 6 on rear side of optical flat seat 4, the quantity of adjusting screw rod is three, its layout
Similar to isosceles right triangle, referring specifically to Fig. 4 and Fig. 8, the middle part of adjusting screw rod 6 is machined with fine thread, adjusting screw rod
6 front end is smooth hemispherical, is butted on rear side of optical flat seat, improves the precision and stability adjusting, adjusting screw rod 6 another
One end is provided with regulating tank, is provided with groove in housing, and adjusting screw rod 6 props up optical flat seat in groove, and rear end part is sudden and violent
It is exposed at outside housing 1, the regulating tank of the afterbody of adjusting screw rod can be processed into interior hexagonal groove, cross or a word groove, is easy to insert
Enter instrument and carry out rotation regulation；Elastic 7 is preferably spring, is installed with screw 8, screw penetrates on optical flat seat in spring
First through hole 41, because spring is with diameter greater than the diameter of screw, spring is compressed in the front side of optical flat seat, does not pass through first
Through hole, screw loads nut after passing through first through hole completes to fix.The power acting on backward in elastic 7 and adjusting screw rod 6 are forward
Push away collective effect power under, optical flat seat 4 flexible fastening is in housing 1.
Adjust three adjusting screw rods and can adjust the inclination angle that optical flat is with respect to optical fiber, thus changing focal beam spot
Lateral attitude, and can be changed by changing pitch, the spacing of adjusting screw rod and the thickness of optical flat of adjusting screw rod
Become total regulated quantity and degree of regulation.
The above is only this and use new concrete application example, any limit is not constituted to protection domain of the present utility model
System.All employing equivalents or equivalence replacement and the technical scheme that formed, all fall within this utility model rights protection scope it
Interior.
Claims (7)
1. a kind of the fiber coupler of fine adjustment is carried out it is characterised in that including housing (1) and in shell based on optical flat
Lens mount (2), lens regulation ring (3), optical flat seat (4) and the optical fiber (5) setting gradually in body (1), described lens mount (2)
Intermeshed fixation by the screw thread of the screw thread of outer ring and described lens regulation ring (3) inner ring, be provided with described lens mount (2)
Coupled lens (20), are provided with optical flat (40), described optical flat seat (4) are provided with described optical flat seat (4)
The first through hole (41) installed for elastic (7), is contacted with adjusting screw rod (6), in elasticity on rear side of described optical flat seat (4)
Under the collective effect of thing (7) and adjusting screw rod (6), the flexible fastening of described optical flat seat (4), in described housing (1), is passed through
Relay lens regulation ring (3) and regulation adjusting screw rod (6) are to change the position of the focal beam spot of light.
2. according to claim 1 a kind of based on optical flat carry out fine adjustment fiber coupler it is characterised in that
The front end of described housing (1) is provided with the first cylindrical hole (10) for mounted lens seat (2), and the rear end of described housing (1) sets
It is equipped with the second cylindrical hole (11) for installing optical fiber (5), described first cylindrical hole (10) and described second cylindrical hole (11) are
Coaxial configuration.
3. according to claim 1 a kind of based on optical flat carry out fine adjustment fiber coupler it is characterised in that
The quantity of described adjusting screw rod (6) is three, and the middle part of described adjusting screw rod (6) is provided with fine thread, described adjusting screw rod
(6) one end is hemispherical, is butted on rear side of described optical flat seat (4), the other end of described adjusting screw rod (6) is provided with regulation
Groove, pass described housing (1) is partially exposed at described housing (1) outward.
4. according to claim 1 a kind of based on optical flat carry out fine adjustment fiber coupler it is characterised in that
It is installed with screw (8), described elastic (7) is compressed on front side of described optical flat seat (4), described spiral shell in described elastic (7)
Nail (8) penetrate described first through hole (41) loads afterwards in nut complete fixation.
5. according to claim 1 a kind of based on optical flat carry out fine adjustment fiber coupler it is characterised in that
Described lens regulation ring (3) is hollow cylindrical structure, the outer ring annular knurl of described lens regulation ring (3), described lens regulation ring
(3) two ends are provided with the groove (30) installed for sealing ring.
6. according to claim 1 a kind of based on optical flat carry out fine adjustment fiber coupler it is characterised in that
Described lens mount (2) is hollow cylindrical structure, and the inner side of described lens mount (2) is provided with stepped hole and supplies coupled lens (20) to pacify
Dress.
7. according to claim 2 a kind of based on optical flat carry out fine adjustment fiber coupler it is characterised in that
Described housing (1) side is provided with stopper slot (12), and position-limitting pin (9) passes through described stopper slot (12) and is fixed on described lens
In the pin hole (21) of seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836806.9U CN205920243U (en) | 2016-08-04 | 2016-08-04 | Fiber coupler based on optical flat carries out minute adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836806.9U CN205920243U (en) | 2016-08-04 | 2016-08-04 | Fiber coupler based on optical flat carries out minute adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205920243U true CN205920243U (en) | 2017-02-01 |
Family
ID=57871959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620836806.9U Active CN205920243U (en) | 2016-08-04 | 2016-08-04 | Fiber coupler based on optical flat carries out minute adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205920243U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125202A (en) * | 2016-08-04 | 2016-11-16 | 中电科天之星激光技术（上海）有限公司 | A kind of optically-based flat board carries out the fiber coupler of fine adjustment |
-
2016
- 2016-08-04 CN CN201620836806.9U patent/CN205920243U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125202A (en) * | 2016-08-04 | 2016-11-16 | 中电科天之星激光技术（上海）有限公司 | A kind of optically-based flat board carries out the fiber coupler of fine adjustment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105759410B (en) | The big view field imaging system of refraction-reflection type heavy caliber | |
| CN102436038B (en) | Optical path coupler, optical path coupling device and optical path coupling method | |
| CN104516108A (en) | Design method for free curved surface imaging system | |
| CN205404930U (en) | Even light adjusting device | |
| US9477071B2 (en) | Method and device for concentrating, collimating, and directing light | |
| CN202815264U (en) | Optical fiber coupling structure | |
| CN105204125A (en) | Automatic coupling system of reflection-type optoelectronic device | |
| CN205920243U (en) | Fiber coupler based on optical flat carries out minute adjustment | |
| CN2446537Y (en) | Optical fiber collimator structure | |
| CN110221391A (en) | A kind of adjustable optical fiber connector of myriawatt grade | |
| CN102338895B (en) | Bifocus micro lens with aspheric surface and adjustable focal length | |
| CN104882784A (en) | Beam combination output coupling device for high-power semiconductor laser | |
| CN204615152U (en) | A kind of conjunction bundle output coupling device for high power semiconductor lasers | |
| CN202305857U (en) | Large-aperture granite and glass composite spherical and aspherical reflector | |
| CN109917521A (en) | A kind of fiber coupling system, coupling light beam regulation method | |
| CN105759462A (en) | Adjustable optical fiber collimation system | |
| CN106125202A (en) | A kind of optically-based flat board carries out the fiber coupler of fine adjustment | |
| CN104317003A (en) | Coaxial light collimator and manufacturing method thereof | |
| CN109856752A (en) | A kind of structure of quick adjusting lens tilt degree | |
| CN205942082U (en) | Adjustment mechanism and telescope based on prime focus formation of image | |
| CN102364377A (en) | Adjusting method for laser beam-expanding lens system | |
| CN108561844B (en) | Solar energy convergence light guide system | |
| CN108107050A (en) | Adjust the method for beam tilts and the lighting device of adjustment beam tilts | |
| CN202948152U (en) | Aspheric condensing lens and concentrated solar illumination system | |
| TWI554734B (en) | Sunlight-collecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201009 Address after: 200437 Shanghai city Yangpu District Yixian Road No. 135 Patentee after: SHANGHAI INSTITUTE OF TRANSMISSION LINE (CETC NO.23 INSTITUTE) Address before: 200434 Shanghai city Yangpu District Yixian Road No. 135 Patentee before: TXSTAR LASER TECHNOLOGY (SHANGHAI) Co.,Ltd. |