CN105866940A - Optical filter with adjustable width and wavelength - Google Patents
Optical filter with adjustable width and wavelength Download PDFInfo
- Publication number
- CN105866940A CN105866940A CN201610310489.1A CN201610310489A CN105866940A CN 105866940 A CN105866940 A CN 105866940A CN 201610310489 A CN201610310489 A CN 201610310489A CN 105866940 A CN105866940 A CN 105866940A
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- China
- Prior art keywords
- grating
- optical filter
- collimater
- optical
- motor
- 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.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0808—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
Abstract
The invention relates to the field of optical filters, in particular to an optical filter with the adjustable width and wavelength. The optical filter comprises a collimator, a grating selection module and an adjustable reflector; the grating selection module comprises a first motor and multiple gratings connected with the first motor, and the first motor drives the gratings to move; the adjustable reflector is arranged at the back of the grating selection module. According to the optical filter with the adjustable width and wavelength, the grating selection module enables incident light to enter the corresponding gratings, the incident light with the specific wavelength is reflected through the adjustable reflector arranged at the back of the corresponding gratings, band width adjustment and wavelength adjustment on the light are achieved, needed band width and wavelength can be selected according to actual demands, and an intelligent optical filter is obtained.
Description
Technical field
The present invention relates to optical filter field, be specifically related to the optical filter of a bandwidth and Wavelength tunable.
Background technology
In existing optical system, the optical filter being more particularly set on photo-detector, typically there is band
Wide regulation and wavelength regulation function, with specific reference to Fig. 1, incident light (the light λ 1 of different wave length, λ 2,
λ 3) injected by incident optical 11, enter after sequentially passing through collimating mirror 12, grating 13, quarter wave plate 14
Be mapped on speculum 15, and again by speculum 15 along original optical path path, reflect and be coupled to emergent light
In fine 16.
Wherein, grating 13 not only changes the bandwidth of light, and dispersion occurs simultaneously, then through reflective mirror by spy
The light of standing wave length reflexes in outgoing optical fiber.
But, the grating of above-mentioned optical filter is changeless, and speculum is also changeless simultaneously,
If desired readjust bandwidth or the wavelength of light, need to reinstall the optical filter of Corresponding matching, unfavorable
Portable in optical system uses.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a bandwidth and
The optical filter of Wavelength tunable, it is achieved the bandwidth of Intelligent adjustment light and wavelength.
The technical solution adopted for the present invention to solve the technical problems is: provide the light of a bandwidth and Wavelength tunable
Wave filter, this optical filter is arranged on the optical circuit path of optical system, this optical filter include collimater,
Grating selects module and adjustable reflective mirror, and incident light sequentially passes through collimater, grating selects module the most adjustable instead
Light microscopic, and penetrate by pressing the rightabout in original optical path path after adjustable mirror reflection；Wherein,
Grating selects module, this grating selection module to include that the first motor is with all some with what the first motor was connected
Grating, this some grating of the first driven by motor moves, and corresponding grating drives the light path road of incident light
On footpath.
Wherein, preferred version is: also include a circulator, and this circulator is arranged on the front of collimater, should
Incident incident light and the reflection light returned through adjustable mirror reflection are separated by circulator.
Wherein, preferred version is: also include an incident optical and outgoing optical fiber, and this incident light passes through incident light
Fibre incides in collimater, and this reflection light is penetrated by outgoing optical fiber.
Wherein, preferred version is: this collimater is collimating mirror.
Wherein, preferred version is: this first motor includes a rotary shaft, and these some gratings are arranged at rotating
On axle.
Wherein, preferred version is: these some gratings are respectively arranged with different grating constants.
Wherein, preferred version is: this grating is transmission grating.
Wherein, preferred version is: this is adjustable, and reflective mirror includes the second motor and the second reflective mirror, this second electricity
Machine drives the second reflective mirror upset.
Wherein, preferred version is: also include a refracting telescope, and this refracting telescope is arranged on collimater and grating selects
Between module, this incident light sequentially passes through collimater, refracting telescope incides grating and selects in module.
Wherein, preferred version is: also include the first reflective mirror, and this refracting telescope is arranged on collimater and grating choosing
Selecting between module, this incident light sequentially passes through collimater, the first reflective mirror incides grating and selects in module.
The beneficial effects of the present invention is, compared with prior art, the present invention is by designing a bandwidth and wavelength
Adjustable optical filter, by grating selection module by incident light beam strikes to corresponding grating, by arranging
The incident light of the adjustable mirror reflection specific wavelength after corresponding grating, it is achieved bandwidth adjustment and the ripple to light
Long regulation, and bandwidth and the wavelength needed can be selected according to actual needs, it is achieved intelligent optical wave filter；Meanwhile,
By integrally disposed for the optical filter of existing many moneys bandwidth, it is achieved complete function, it is simple to operation controls, with
Time reduce use cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of existing optical filter；
Fig. 2 is the structural representation of optical filter of the present invention；
Fig. 3 is the structural representation that grating of the present invention arranges optical filter on the rotating shaft.
Detailed description of the invention
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
As in figure 2 it is shown, the present invention provides the preferred embodiment of a kind of optical filter.
One bandwidth and the optical filter of Wavelength tunable, this optical filter is arranged on the optical circuit path of optical system
On, this optical filter includes that collimater 21, grating select module 23 and adjustable reflective mirror 24, and incident light depends on
Secondary through collimater 21, grating select module 23 incide in adjustable reflective mirror 24, and by adjustable instead
Incident light is pressed the rightabout reflection injection in original optical path path, the rightabout in original optical path path by light microscopic 23
Refer to that sequentially passing through grating selects module 23 and collimater 21 reflection injection.
Specifically:
In the collimater 21 of the present embodiment, collimater 21 is arranged on the incoming position of light, collimater 21
Converge by incident light collimation and by reflection light.Preferably, collimater 21 is collimating mirror.
Grating at the present embodiment selects in module 23, and grating selects module 23 for by corresponding grating
231 move on the optical circuit path of incident light；Wherein, grating selects module 23 to include the first motor 232
With the some gratings 231 being all connected with the first motor 232, this first motor 232 drives some gratings 231
Motion, the grating 231 of this correspondence moves on the optical circuit path of incident light under the drive of the first motor 232.
Select the bandwidth needed according to actual needs, it is achieved the optical filter collection of intelligent optical wave filter, i.e. many moneys bandwidth
Become to arrange, it is achieved complete function, it is simple to operation controls, and reduces use cost simultaneously.
Wherein, incident light changes its bandwidth, meanwhile, the incidence after grating 231 after grating 231
Light scatters, and the incident light of different wave length penetrates at different angles.
Preferably, incident light is all consistent to the distance each grating 231 after collimater 21 penetrates, meanwhile,
Incident light beam strikes is the most consistent to the angle of grating 231.Improve incident light stability in optical filter.
Further, each grating 231 is respectively arranged with different grating 231 constants, selects according to user
Selecting, corresponding grating 231 moves on the optical circuit path of incident light.
In the adjustable reflective mirror 24 of the present embodiment, adjustable reflective mirror 24 is arranged on grating and selects module 23
Rear, this incident light in grating 231 incides adjustable reflective mirror 24, this is adjustable reflective mirror 24
For reflecting the incident light of specific wavelength, and returned by original optical path path.Wherein, adjustable reflective mirror 24
Including the second motor 242 and the second reflective mirror 241, this second motor 242 drives the second reflective mirror 241 to turn over
Turn.Select the wavelength needed according to actual needs, it is achieved intelligent optical wave filter, it is achieved optical wavelength is adjustable, just
In operation control, reduce use cost simultaneously.
Specifically, owing to the incident light of different wave length is by, after grating 231, penetrating at different angles, and
All incide in adjustable reflective mirror 24；Meanwhile, the second motor 242 controls the second reflective mirror 241 and overturns,
Thus change reflection angle, the incident light (wavelength) of reflection will be needed to reflect.
In the present embodiment, optical filter also includes a circulator 25, and this circulator 25 is arranged on collimater
The front of 21, this circulator 25 is by incident incident light and the reflection that is reflected back through adjustable reflective mirror 24
Light separates.
Further, optical filter also includes an incident optical and outgoing optical fiber, and this incident light passes through incident light
Fibre incides in collimater 21, and this reflection light is penetrated by outgoing optical fiber.Or, incident optical and outgoing
Optical fiber is set directly at the front of collimater 21, it is not necessary to increase circulator 25.
In the present embodiment, an optical filter also refracting telescope 22, this refracting telescope 22 is arranged on collimater 21
With grating selects between module 23, this incident light sequentially passes through collimater 21, refracting telescope 22 incides light
Grid select in module 23.It is preferably prism.
Or, optical filter the also first reflective mirror, this refracting telescope 22 is arranged on collimater 21 and grating selects
Between module 23, this incident light sequentially passes through collimater the 21, first reflective mirror and incides grating selection module
In 23.By changing the angle of injecting of incident light, thus injection angle when changing its outgoing.
As it is shown on figure 3, the present invention provides the preferred embodiment of a kind of optical filter.
First motor 232 includes a rotary shaft 2321, and these some gratings 231 are arranged at rotary shaft 2321
On, this rotary shaft 2321 drives grating 231 to move, and corresponding grating 231 is turned to incident light
On optical circuit path.
In the present invention, emphasize reflect light return by original optical path path, but reflection light optical circuit path and
The optical circuit path of incident light has deviation, to ensure that reflection light can be penetrated by outgoing optical fiber.
In the present invention, the first motor 232 in optical filter and the second motor 242 all process with a control
Device connects, and user selects bandwidth and the wavelength of needs by controlling processor.
As described above, only preferred embodiment, it is not intended to limit the scope of the present invention,
All equivalence changes made according to scope of the present invention patent or modification, be all the present invention and contained.
Claims (10)
1. a bandwidth and the optical filter of Wavelength tunable, it is characterised in that: this optical filter is arranged on optics
On the optical circuit path of system, this optical filter includes that collimater, grating select module and adjustable reflective mirror, enters
Penetrate light and sequentially pass through collimater, grating selection module extremely adjustable reflective mirror, and by after adjustable mirror reflection
Penetrate by the rightabout in original optical path path；Wherein,
Grating selects module to include the first motor and the some gratings being connected with the first motor, this first motor belt motor
Dynamic some gratings motion, and corresponding grating is driven on the optical circuit path of incident light.
Optical filter the most according to claim 1, it is characterised in that: also including a circulator, this follows
Ring device is arranged on the front of collimater, and this circulator by incident incident light and returns through adjustable mirror reflection
Reflection light separate.
Optical filter the most according to claim 1 and 2, it is characterised in that: also include an incident optical
With outgoing optical fiber, this incident light incides in collimater by incident optical, and this reflection light passes through outgoing optical fiber
Injection.
Optical filter the most according to claim 1, it is characterised in that: this collimater is collimating mirror.
Optical filter the most according to claim 1, it is characterised in that: this first motor includes a rotation
Axle, these some gratings are respectively provided with on the rotating shaft.
Optical filter the most according to claim 1 or 5, it is characterised in that: these some gratings set respectively
It is equipped with different grating constants.
Optical filter the most according to claim 6, it is characterised in that: this grating is transmission grating.
Optical filter the most according to claim 1, it is characterised in that: this is adjustable, and reflective mirror includes second
Motor and the second reflective mirror, this second driven by motor second reflective mirror overturns.
Optical filter the most according to claim 1, it is characterised in that: also include a refracting telescope, this folding
Penetrating mirror to be arranged between collimater and grating selection module, this incident light sequentially passes through collimater, refracting telescope enters
It is mapped to grating select in module.
Optical filter the most according to claim 1, it is characterised in that: also include the first reflective mirror,
This refracting telescope is arranged on collimater and grating and selects between module, this incident light sequentially pass through collimater, first
Reflective mirror incides grating and selects in module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310489.1A CN105866940B (en) | 2016-05-11 | 2016-05-11 | The optical filter of one bandwidth and Wavelength tunable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310489.1A CN105866940B (en) | 2016-05-11 | 2016-05-11 | The optical filter of one bandwidth and Wavelength tunable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105866940A true CN105866940A (en) | 2016-08-17 |
| CN105866940B CN105866940B (en) | 2018-11-27 |
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ID=56630712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610310489.1A Expired - Fee Related CN105866940B (en) | 2016-05-11 | 2016-05-11 | The optical filter of one bandwidth and Wavelength tunable |
Country Status (1)
| Country | Link |
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| CN (1) | CN105866940B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111273435A (en) * | 2020-03-27 | 2020-06-12 | 昂纳信息技术（深圳）有限公司 | Micro-vibration mirror scanning structure, electric energy driving system and angle detection system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096983Y (en) * | 2007-07-27 | 2008-08-06 | 昂纳信息技术（深圳）有限公司 | Grating light tuning filter |
| CN201518071U (en) * | 2009-10-23 | 2010-06-30 | 昂纳信息技术（深圳）有限公司 | Adjustable filter |
| CN203535312U (en) * | 2013-09-24 | 2014-04-09 | 昂纳信息技术（深圳）有限公司 | Grating-type optical tunable filter |
-
2016
- 2016-05-11 CN CN201610310489.1A patent/CN105866940B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096983Y (en) * | 2007-07-27 | 2008-08-06 | 昂纳信息技术（深圳）有限公司 | Grating light tuning filter |
| CN201518071U (en) * | 2009-10-23 | 2010-06-30 | 昂纳信息技术（深圳）有限公司 | Adjustable filter |
| CN203535312U (en) * | 2013-09-24 | 2014-04-09 | 昂纳信息技术（深圳）有限公司 | Grating-type optical tunable filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111273435A (en) * | 2020-03-27 | 2020-06-12 | 昂纳信息技术（深圳）有限公司 | Micro-vibration mirror scanning structure, electric energy driving system and angle detection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105866940B (en) | 2018-11-27 |
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Granted publication date: 20181127 |