CN205786353U - A kind of transmittance meter based on rotating filtering sheet monochromator - Google Patents
A kind of transmittance meter based on rotating filtering sheet monochromator Download PDFInfo
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- CN205786353U CN205786353U CN201620489194.0U CN201620489194U CN205786353U CN 205786353 U CN205786353 U CN 205786353U CN 201620489194 U CN201620489194 U CN 201620489194U CN 205786353 U CN205786353 U CN 205786353U
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- 238000002834 transmittance Methods 0.000 title claims abstract description 17
- 238000001914 filtration Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 239000011888 foil Substances 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 125000005843 halogen group Chemical group 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 6
- 230000004907 flux Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000008033 biological extinction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a kind of transmittance meter based on rotating filtering sheet monochromator, including light source, colimated light system, sample room, front optical system, monochromator, rear optical system, signal receiving processing system and display, colimated light system is arranged between light source and sample room, and light source is arranged in the front focus of colimated light system, sample room is arranged between colimated light system and front optical system, monochromator is arranged between front optical system and rear optical system, front optical system is made up of principal reflection mirror and secondary mirror, and the centre of principal reflection mirror is provided with an opening；Rear optical system is made up of four groups of lens, and each battery of lens is arranged on one of them service aisle of monochromator；Signal receiving processing system is made up of ccd detector and signal processor, and each ccd detector is connected over the display by signal processor.This utility model transmittance meter has the advantage that high light spectral resolution, higher luminous flux and spectral measurement ranges are bigger, and combination property is high.
Description
Technical field
This utility model relates to optical instrument field, a kind of transmittance meter based on rotating filtering sheet monochromator.
Background technology
Visibility is an index of reflection atmospheric transparency, and visibility is closely related with weather condition at that time.When there are the synoptic processes such as rainfall, mist, haze, sandstorm, atmospheric transparency is relatively low, and therefore visibility is poor.Visibility is very big, such as, under low visibility on production and the life impact of people, navigation, aviation and land transportation are all greatly affected, and are susceptible to major accident, simultaneously, visibility still characterizes the basic concept of atmospheric pollution level, and measurement visibility promptly and accurately is significant.Owing to being affected by the factor such as ambient temperature, circuit stability, detection light can drift around in centre wavelength, causes atmospheric extinction coefficient to fluctuate, and this is accomplished by measuring the extinction coefficient under different wave length, is modified visibility measurement result.
The extinction coefficient measured under different wave length need to use this light-splitting device of monochromator, are extracted with the information of spectrum change by extinction coefficient.Different according to monochromator used, transmittance meter is divided into several types.
Prism-grating-prism (PGP) type transmittance meter uses the combination of common prism and diffraction grating to reach light splitting purpose, compensate for prism and grating to a certain extent separately as Spectral line bend during beam splitter, the integrally-built of instrument is conducive to debug, but its dispersion is mainly based on grating therein, there is wider spectral measurement ranges and higher spectral resolution, but owing to being limited by grating slit size, the method is difficult to obtain higher luminous flux, and signal to noise ratio is relatively low.
Fourier transformation type transmittance meter utilizes interferometer principle to carry out light splitting, by the interferogram of detection pixel radiation, and utilizes computer that interferogram is carried out Fourier transformation process, it is thus achieved that the spectral distribution of pixel.This method has higher spectral resolution, higher luminous flux, higher signal to noise ratio, but is constrained to optical path difference change interval and is difficult to the least, and the method is mainly used in infrared spectrum wave band.
Current transmittance meter is difficult to take into account the characteristics such as spectral resolution, luminous flux, spectral measurement ranges simultaneously.Develop a kind of transmittance meter with higher combination property and seem the most urgent.
Utility model content
Not enough in order to solve present in current visibility measuring instrument, the purpose of this utility model is to provide a kind of transmittance meter based on rotating filtering sheet monochromator, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
A kind of transmittance meter based on rotating filtering sheet monochromator, including light source, colimated light system, sample room, front optical system, monochromator, rear optical system, signal receiving processing system and display, described colimated light system is arranged between light source and sample room, and light source is arranged in the front focus of colimated light system, described sample room is arranged between colimated light system and front optical system, described monochromator is arranged between front optical system and rear optical system
Described front optical system is made up of principal reflection mirror and secondary mirror, described primary mirror surface and secondary mirror surface all scribble reflective foil layer, the centre of described principal reflection mirror is provided with an opening, the opening size of principal reflection mirror is more than from the directional light size of secondary mirror outgoing, and the focus of described principal reflection mirror overlaps with the focal position of secondary mirror；
Described rear optical system is made up of four groups of lens, and including the first battery of lens, the second battery of lens, the 3rd battery of lens and the 4th battery of lens, each battery of lens is made up of several lens, and each battery of lens is arranged on one of them service aisle of monochromator；
Described signal receiving processing system is made up of ccd detector and signal processor, and the back focal plane of each battery of lens is provided with corresponding ccd detector, and each ccd detector is connected with signal processor, and signal processor connects over the display.
As further program of the utility model: described light source is halogen tungsten lamp.
As this utility model further scheme: described principal reflection mirror is concave surface secondary rotating paraboloidal mirror, described secondary mirror is convex surface secondary rotating paraboloidal mirror.
Compared with prior art, the beneficial effects of the utility model are: this utility model transmittance meter has the advantage that high light spectral resolution, higher luminous flux and spectral measurement ranges are bigger, and combination property is high.
Accompanying drawing explanation
Fig. 1 is connection diagram of the present utility model.
Fig. 2 is structural representation of the present utility model.
In figure: 1-rotating filtering sheet；8-polariser；12-principal reflection mirror；13-secondary mirror；14-monochromator；15-the first battery of lens；16-the second battery of lens；17-the 3rd battery of lens；18-the 4th battery of lens；19-the first ccd detector；20-the second ccd detector；21-the 3rd ccd detector；22-the 4th ccd detector.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 1～2, in this utility model embodiment, a kind of transmittance meter based on rotating filtering sheet monochromator, including light source, colimated light system, sample room, front optical system, monochromator, rear optical system, signal receiving processing system and display, colimated light system is arranged between light source and sample room, and light source is arranged in the front focus of colimated light system, sample room is arranged between colimated light system and front optical system, and monochromator is arranged between front optical system and rear optical system.
Front optical system is made up of principal reflection mirror and secondary mirror, and the centre of principal reflection mirror is provided with an opening, and the focus of principal reflection mirror overlaps with the focal position of secondary mirror；
Rear optical system is made up of four groups of lens, and including the first battery of lens, the second battery of lens, the 3rd battery of lens and the 4th battery of lens, each battery of lens is made up of several lens, and each battery of lens is arranged on one of them service aisle of monochromator；
Signal receiving processing system is made up of ccd detector and signal processor, and the back focal plane of each battery of lens is provided with corresponding ccd detector, and each ccd detector is connected with signal processor, and signal processor connects over the display.
The opening size of principal reflection mirror is more than from the directional light size of secondary mirror outgoing.Principal reflection mirror is concave surface secondary rotating paraboloidal mirror, and secondary mirror is convex surface secondary rotating paraboloidal mirror.Primary mirror surface and secondary mirror surface all scribble reflective foil layer.
Light source is halogen tungsten lamp, sends visible and that near infrared wavelength is wider light, and the light that light source sends becomes in the atmospheric sample to be measured that directional light is incident in sample room after colimated light system.Sample room light out is converted into the collimated light beam of coupling monochromator bore by front optical system.
Front optical system is made up of one group of reflecting mirror, and including principal reflection mirror 12 and secondary mirror 13, principal reflection mirror 12 is concave surface secondary rotating paraboloidal mirror, and principal reflection mirror 12 surface scribbles reflective foil layer, is gone out by incident luminous reflectance；Secondary mirror 13 is convex surface secondary rotating paraboloidal mirror, and secondary mirror 13 surface scribbles reflective foil layer, is gone out by incident luminous reflectance.
Principal reflection mirror 12 receives the light sent from sample room, and reflects light and assemble, and assembles the focus that the direction of propagation is principal reflection mirror 12 of light；It is provided with an opening in the middle of principal reflection mirror 12, opening size is more than from the directional light size of secondary reflection 13 outgoing, not stopping parallel light emergence, secondary mirror 13 is between the focus of principal reflection mirror 12 and principal reflection mirror 12, and the focus of principal reflection mirror 12 overlaps with the focal position of secondary mirror 13.
Sample room light out is reflected and assembles by principal reflection mirror 12, and convergent beam incides secondary mirror 13 surface, then is reflected away by secondary mirror 13, forms small-bore parallel light emergence.Secondary mirror 13 receives the light that principal reflection mirror 12 reflection is assembled, and to light line reflection, forms the directional light middle opening outgoing from principal reflection mirror 12, form the directional light less than incident beam bore.The directional light of secondary mirror 13 outgoing enters monochromator 14, through the light splitting effect of monochromator 14, forms the emergent light of four service aisles.
Monochromator 14 by organizing rotating filtering sheet and polariser forms more, polariser is arranged between front optical system and rotating filtering sheet, rotating filtering sheet is made up of the eyeglass being coated with arrowband film, rotating filtering sheet is arranged in the picture frame of accurately rotation, polariser is made up of the prism being coated with polarizing coating, outgoing beam is divided into the outgoing beam in two bundle different polarization directions, and rotating filtering sheet and polarizer surface all scribble reflective foil layer.
Rear optical system is made up of four battery of lens, including the first battery of lens the 15, second battery of lens the 16, the 3rd battery of lens 17 and the 4th battery of lens 18, each battery of lens is made up of some lens, and the emergent light of a certain service aisle is converged to picture, and imaging surface is positioned on the back focal plane of these group lens.
The back focal plane often organizing lens is provided with corresponding ccd detector, is used for receiving the light energy on focal plane, and converts optical signals into the signal of telecommunication；Each ccd detector is connected with signal processor, the first ccd detector 19 it is provided with on the back focal plane of the first battery of lens 15, the second ccd detector 20 it is provided with on the back focal plane of the second battery of lens 16, it is provided with the 3rd ccd detector 21 on the back focal plane of the 3rd battery of lens 17, it is provided with the 4th ccd detector 22 on the back focal plane of the 4th battery of lens 18, carry out processing conversion to the signal of telecommunication of CCD output, obtain one-dimensional spectral information and the two-dimensional space information of object, and export and show to display.
In actual application, port number and the measure spectrum scope of wherein monochromator can be changed flexibly according to the needs of measured target.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the case of without departing substantially from spirit or essential attributes of the present utility model, it is possible to realize this utility model in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in this utility model.Should not be considered as limiting involved claim by any reference in claim.
Claims (3)
1. a transmittance meter based on rotating filtering sheet monochromator, including light source, colimated light system, sample room, front optical system, monochromator, rear optical system, signal receiving processing system and display, it is characterized in that, described colimated light system is arranged between light source and sample room, and light source is arranged in the front focus of colimated light system, described sample room is arranged between colimated light system and front optical system, and described monochromator is arranged between front optical system and rear optical system
Described front optical system is made up of principal reflection mirror and secondary mirror, described primary mirror surface and secondary mirror surface all scribble reflective foil layer, the centre of described principal reflection mirror is provided with an opening, the opening size of principal reflection mirror is more than from the directional light size of secondary mirror outgoing, and the focus of described principal reflection mirror overlaps with the focal position of secondary mirror；
Described rear optical system is made up of four groups of lens, and including the first battery of lens, the second battery of lens, the 3rd battery of lens and the 4th battery of lens, each battery of lens is made up of several lens, and each battery of lens is arranged on one of them service aisle of monochromator；
Described signal receiving processing system is made up of ccd detector and signal processor, and the back focal plane of each battery of lens is provided with corresponding ccd detector, and each ccd detector is connected with signal processor, and signal processor connects over the display.
Transmittance meter based on rotating filtering sheet monochromator the most according to claim 1, it is characterised in that described light source is halogen tungsten lamp.
Transmittance meter based on rotating filtering sheet monochromator the most according to claim 1, it is characterised in that described principal reflection mirror is concave surface secondary rotating paraboloidal mirror, described secondary mirror is convex surface secondary rotating paraboloidal mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620489194.0U CN205786353U (en) | 2016-05-26 | 2016-05-26 | A kind of transmittance meter based on rotating filtering sheet monochromator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620489194.0U CN205786353U (en) | 2016-05-26 | 2016-05-26 | A kind of transmittance meter based on rotating filtering sheet monochromator |
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| CN205786353U true CN205786353U (en) | 2016-12-07 |
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| CN201620489194.0U Expired - Fee Related CN205786353U (en) | 2016-05-26 | 2016-05-26 | A kind of transmittance meter based on rotating filtering sheet monochromator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954286A (en) * | 2016-05-26 | 2016-09-21 | 上海新产业光电技术有限公司 | Visibility measuring instrument based on rotary-light-filter monochromator |
| CN114636543A (en) * | 2020-12-15 | 2022-06-17 | 中国科学院大连化学物理研究所 | Optical filter spectrum detection device |
-
2016
- 2016-05-26 CN CN201620489194.0U patent/CN205786353U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954286A (en) * | 2016-05-26 | 2016-09-21 | 上海新产业光电技术有限公司 | Visibility measuring instrument based on rotary-light-filter monochromator |
| CN114636543A (en) * | 2020-12-15 | 2022-06-17 | 中国科学院大连化学物理研究所 | Optical filter spectrum detection device |
| CN114636543B (en) * | 2020-12-15 | 2022-12-27 | 中国科学院大连化学物理研究所 | Optical filter spectrum detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200526 |