CN104155004B - A kind of refraction rotary scanning interference instrument - Google Patents
A kind of refraction rotary scanning interference instrument Download PDFInfo
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- CN104155004B CN104155004B CN201410382154.1A CN201410382154A CN104155004B CN 104155004 B CN104155004 B CN 104155004B CN 201410382154 A CN201410382154 A CN 201410382154A CN 104155004 B CN104155004 B CN 104155004B
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- mirror
- light beam
- refraction
- window
- refraction window
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Abstract
The invention discloses a kind of refraction rotary scanning interference instrument, including beam splitter, refraction window, plane mirror one, plane mirror two, the focus of the paraboloidal mirror one described in paraboloidal mirror one, paraboloidal mirror two, corner reflector one, corner reflector two is provided with light source, and the focus of described paraboloidal mirror two is provided with optical detection system；Light beam from light source is divided into transmitted light beam and reflection light beam two parts by beam splitter, high speed rotating under the drive of the motor that described refraction window connects in center, transmitted light beam and reflection light beam through refraction window and are returned to beam splitter in respective light path, with certain optical path difference, and interfere, throwing face mirror two receives this interfering beam and is detected by photodetector system, and the present invention improves the stability in interferometer running, and accelerates spectral measurement speed.
Description
Technical field
The present invention relates to optical field, refer specifically to a kind of refraction rotary scanning interference instrument.
Background technology
Fourier transform infrared spectroscopy (FTIR) instrument owing to having high light flux, low noise, the advantages such as measuring speed is fast, with
And unique advantages such as real-time multicomponent detection simultaneously can be carried out, in sides such as environmental monitoring, chemical analysis, drug ingredient analyses
Face is all widely used.
The major optical parts of Fourier transformation infrared spectrometer are classical Michelson's interferometers, classical Michelson
Interferometer requires index glass and horizontal glass exact vertical, but in actual working environment, due to index glass in movement it is difficult to ensure that two
Index glass is orthogonal with horizontal glass so that light path produces the effects such as shearing, inclination, reduces interference efficiency, adds spectral noise,
Limit systematic difference field.
The refraction rotary scanning interference instrument that the present invention proposes, with rotating the change replacing linear motion to realize optical path difference,
The light path that index glass can be overcome to bring in linear motion tilts and shear inference, can realize quick spectral measurement simultaneously,
There is good anti-interference and stability.
Summary of the invention
The present invention proposes a kind of refraction rotary scanning interference instrument, and the rotation by means of the plane refraction window in interferometer comes
Produce optical path difference, improve the stability in interferometer running, and accelerate spectral measurement speed.
The technical solution used in the present invention is:
A kind of refraction rotary scanning interference instrument, including beam splitter and refraction window, it is characterised in that: described beam splitter water
Placing flat, described refraction window is positioned on the left of beam splitter at certain distance interval, in the middle of described beam splitter and refraction window
Before and after symmetric position be respectively equipped with plane mirror one and plane mirror two, also include paraboloidal mirror one and paraboloidal mirror
Two, corner reflector one and corner reflector two, described paraboloidal mirror one and paraboloidal mirror two are anti-with plane mirror one and plane
Penetrate mirror two about beam splitter centrosymmetry, described corner reflector one and corner reflector two and plane mirror one and plane reflection
Mirror two is about refraction window centrosymmetry；The focus of described paraboloidal mirror one is provided with light source, described paraboloidal mirror two
Focus is provided with optical detection system；
The light beam that described light source is launched obtains parallel beam incident to beam splitter through paraboloidal mirror one reflection, described
Light beam two on light beam one that collimated light beam is divided on reflected light path by beam splitter and transmitted light path, on described reflected light path
Light beam one sequentially passes through plane mirror one, refraction window arrives angle mirror two, light beam two warp successively on described transmitted light path
Cross plane mirror two, refraction window arrives angle mirror one, described refraction window high speed rotating, described angle mirror two and angle mirror one
Reflection light beam one and light beam two return again pass by refraction window and obtain light beam three and light beam four, described light beam three and light beam four
Between there is certain optical path difference, and reversible according to light path, described light beam three and light beam four are along backtracking to beam splitter also
Interfering generation interfering beam, described paraboloidal mirror two receives interfering beam and is sent in detector detect.
Described light beam one and light beam two are submitted and a cross point at refraction window, described cross point and described refraction
Window center superposition, described refraction window center is provided with the rotating shaft connecting high-speed electric expreess locomotive, and described refraction window is at a high speed
High speed rotating under the control of motor.
Described paraboloidal mirror one and paraboloidal mirror two are off axis paraboloidal mirror.
The described optical path difference between interfering beam is by reflecting the thickness d of window, refractive index n and the refraction window anglec of rotation
Degree θ together decides on, and optical path difference is
Advantages of the present invention:
Refraction window in the present invention is rotated by high-speed electric expreess locomotive and makes light beam produce optical path difference, and often rotate a circle acquisition four width
Interferogram, improves measuring speed, rotates refraction window by SERVO CONTROL with constant rotational speed, is not required to reference laser light and interferes
Instrument, reduces certain cost.
The present invention replaces traditional straight line or the working method of swing arm interferometer in a rotative pattern, decreases conventional interference
The size of instrument, it is simple to integrated small and exquisite portable spectrogrph, it is possible to meet current Fourier transformation infrared spectrometer greenhouse gases,
The requirement of the environmental monitorings such as volatile organic matter, also can meet other field miniaturization Fouriers such as food safety, pharmaceutical analysis
The application requirement of transform infrared interferometer.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
As it is shown in figure 1, a kind of refraction rotary scanning interference instrument, including beam splitter 3 and refraction window 10, described beam splitter
3 horizontal positioned, described refraction window 10 is positioned on the left of beam splitter at certain distance interval, described beam splitter 3 and refractance window
Before and after sheet 10 centre, symmetric position is respectively equipped with plane mirror 1 and plane mirror 26, also includes paraboloidal mirror 1
With paraboloidal mirror 24, corner reflector 1 and corner reflector 2 11, described paraboloidal mirror 1 and paraboloidal mirror 24 and plane
Reflecting mirror 1 and plane mirror 26 light in beam splitter 3 centrosymmetry, described corner reflector 1 and corner reflector 2 11 with
Plane mirror 1 and plane mirror 26 are about refraction window 10 centrosymmetry；In the focus of described paraboloidal mirror 1
Being provided with light source 2, the focus of described paraboloidal mirror 24 is provided with optical detection system 5；
The light beam that described light source 2 is launched obtains parallel beam incident to beam splitter 3 through paraboloidal mirror 1 reflection, institute
Light beam two on light beam one that collimated light beam is divided on reflected light path by the beam splitter 3 stated and transmitted light path, described reflection light
Light beam one on road sequentially passes through plane mirror 1, refraction window 10 arrives angle mirror 2 11, the described light on transmitted light path
Bundle two sequentially passes through plane mirror 26, refraction window 10 arrives angle mirror 1, described refraction window 10 high speed rotating, described
Angle mirror 2 11 and angle mirror 29 reflection light beam one and light beam two return again pass by refraction window 10 obtain light beam three and light beam
Four, between described light beam three and light beam four, there is certain optical path difference, and reversible according to light path, described light beam three and light beam
Four to beam splitter 3 and interfere generation interfering beam along backtracking, and described paraboloidal mirror 24 receives interfering beam and sends
Detect in detector 5.
Described light beam one and light beam two give a cross point 7 on refraction window 10, and described cross point 7 is with described
Refraction window center superposition, described refraction window center is provided with the rotating shaft of high-speed electric expreess locomotive, and described refraction window is at a high speed
High speed rotating under the control of motor, makes the separate light beam of beam splitter 3 produce optical path difference between transmitted light path and reflected light path.
Owing to described native system uses small size to reflect window, it is possible to make whole instrument size reduce, meanwhile,
Refraction window rotates a circle and can obtain four width interferograms, therefore improves measuring speed and correspondingly also requires that collection quickly
Speed.
Claims (1)
1. a refraction rotary scanning interference instrument, including beam splitter and refraction window, it is characterised in that: described beam splitter level
Placing, described refraction window is positioned on the left of beam splitter at certain distance interval, in the middle of described beam splitter and refraction window
Front and back symmetric position is respectively equipped with plane mirror one and plane mirror two, also includes paraboloidal mirror one and paraboloidal mirror two,
Angle mirror one and angle mirror two, described paraboloidal mirror one and paraboloidal mirror two and plane mirror one and plane mirror two are about dividing
Bundle device centrosymmetry, described angle mirror one and angle mirror two and plane mirror one and plane mirror two are about refraction window center
Symmetrical；The focus of described paraboloidal mirror one is provided with light source, and the focus of described paraboloidal mirror two is provided with optical detection system；
The light beam that described light source is launched obtains parallel beam incident to beam splitter through paraboloidal mirror one reflection, described beam splitting
Light beam two on light beam one that collimated light beam is divided on reflected light path by device and transmitted light path, the described light beam on reflected light path
One sequentially passes through plane mirror one, refraction window arrival angle mirror two, and the light beam two on described transmitted light path sequentially passes through flat
Face reflecting mirror two, refraction window arrive angle mirror one, and described refraction window high speed rotating, described angle mirror two and angle mirror one reflect
Light beam one and light beam two return again pass by refraction window and obtain light beam three and light beam four, between described light beam three and light beam four
There is certain optical path difference, and reversible according to light path, and described light beam three and light beam four and occur along backtracking to beam splitter
Interfering and produce interfering beam, described paraboloidal mirror two receives interfering beam and is sent in detector detect；
Described light beam one and light beam two are submitted and a cross point at refraction window, described cross point and described refraction window
Center superposition, described refraction window center is provided with the rotating shaft of high-speed electric expreess locomotive, and described refraction window is in the control of high-speed electric expreess locomotive
The lower high speed rotating of system；
Described paraboloidal mirror one and paraboloidal mirror two are off axis paraboloidal mirror；
Described optical path difference is by the thickness reflecting window, refractive indexAnd the refraction window anglec of rotationTogether decide on, optical path difference
For
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382154.1A CN104155004B (en) | 2014-08-05 | 2014-08-05 | A kind of refraction rotary scanning interference instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410382154.1A CN104155004B (en) | 2014-08-05 | 2014-08-05 | A kind of refraction rotary scanning interference instrument |
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| Publication Number | Publication Date |
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| CN104155004A CN104155004A (en) | 2014-11-19 |
| CN104155004B true CN104155004B (en) | 2016-08-24 |
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| CN201410382154.1A Active CN104155004B (en) | 2014-08-05 | 2014-08-05 | A kind of refraction rotary scanning interference instrument |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644938B (en) * | 2016-11-29 | 2019-07-12 | 北京空间机电研究所 | A kind of interference-type Fourier transform spectrometer swing arm motion control system |
| CN110989695B (en) * | 2019-12-24 | 2022-02-11 | 中国科学院合肥物质科学研究院 | Automatic sun tracking device and method on mobile platform |
| CN114136442B (en) * | 2021-11-23 | 2024-05-14 | 杭州谱育科技发展有限公司 | Interferometer based on continuous rotation and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4654530A (en) * | 1983-10-31 | 1987-03-31 | Dybwad Jens P | Refractively scanned interferometer |
| JP2001041822A (en) * | 1999-07-28 | 2001-02-16 | Shimadzu Corp | Interference spectrophotometer |
| CN202631111U (en) * | 2012-05-30 | 2012-12-26 | 北京瑞利分析仪器有限公司 | Plane pendulum interferometer |
| CN103712691A (en) * | 2013-12-23 | 2014-04-09 | 聚光科技(杭州)股份有限公司 | Fourier transformation spectrograph |
| CN103712692A (en) * | 2013-12-31 | 2014-04-09 | 聚光科技(杭州)股份有限公司 | Spectrograph and working method |
-
2014
- 2014-08-05 CN CN201410382154.1A patent/CN104155004B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4654530A (en) * | 1983-10-31 | 1987-03-31 | Dybwad Jens P | Refractively scanned interferometer |
| JP2001041822A (en) * | 1999-07-28 | 2001-02-16 | Shimadzu Corp | Interference spectrophotometer |
| CN202631111U (en) * | 2012-05-30 | 2012-12-26 | 北京瑞利分析仪器有限公司 | Plane pendulum interferometer |
| CN103712691A (en) * | 2013-12-23 | 2014-04-09 | 聚光科技(杭州)股份有限公司 | Fourier transformation spectrograph |
| CN103712692A (en) * | 2013-12-31 | 2014-04-09 | 聚光科技(杭州)股份有限公司 | Spectrograph and working method |
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| CN104155004A (en) | 2014-11-19 |
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