CN220019380U - Cylindrical multiple reflection absorption tank - Google Patents
Cylindrical multiple reflection absorption tank Download PDFInfo
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- CN220019380U CN220019380U CN202320934918.8U CN202320934918U CN220019380U CN 220019380 U CN220019380 U CN 220019380U CN 202320934918 U CN202320934918 U CN 202320934918U CN 220019380 U CN220019380 U CN 220019380U
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- cylindrical
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- reflecting mirror
- light source
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 24
- 230000003287 optical effect Effects 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of gas detection, in particular to a cylindrical multiple reflection absorption tank which comprises a parallel light source, a reflecting mirror and a lens, wherein the reflecting mirror is of a cylindrical structure with the inner wall being a reflecting surface, the reflecting mirror is provided with a center point, the parallel light source and the lens are arranged outside the reflecting mirror, and the lens is arranged at a position near the center point of the reflecting mirror in the horizontal direction after the parallel light emitted by the parallel light source is refracted by the lens. The absorption cell of this patent is small, and the light beam can realize more reflection many times in the inside of cylindrical speculum, has improved the optical path greatly, and the processing degree of difficulty of cylindrical speculum is far lower than spherical speculum simultaneously.
Description
Technical Field
The utility model relates to the technical field of gas absorption tanks, in particular to a cylindrical multi-reflection absorption tank.
Background
At present, the photoelectric technology for measuring the gas components and the concentration by utilizing the infrared laser spectrum absorption principle is mature, the core device is a gas absorption tank, and the gas absorption tank at present mainly adopts a white tank and a Herriott tank.
Application number: 202020707555.0 the patent entitled "a gas absorption cell and gas concentration detection device" provides an annular multiple reflection absorption cell, has realized the effect of small-size long optical path through multiple reflection, but, this absorption cell reflecting surface is spherical or spherical part, and the processing degree of difficulty is higher, and this absorption cell can only let the facula encircle a week at most in addition, and the optical path length that realizes is limited.
Disclosure of Invention
The utility model aims to provide a cylindrical multi-reflection absorption cell so as to solve the problems of limited optical path length and higher processing difficulty of the existing gas absorption cell.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a cylinder multiple reflection absorption pond, includes parallel light source, speculum, lens, the speculum is the cylinder structure of inner wall for the reflecting surface, and it has a central point, parallel light source, lens all set up in the outside of speculum, the lens is in order to realize that the parallel light that parallel light source launched gathers in the position setting near the central point of speculum in the horizontal direction after the lens refraction.
Preferably, the lens is an aplanatic cylindrical lens.
Preferably, the parallel light source adopts a laser.
Compared with the prior art, the utility model has the beneficial effects that:
the absorption cell of this patent is small, and the light beam can realize more reflection many times in the inside of cylindrical speculum, has improved the optical path greatly, and the processing degree of difficulty of cylindrical speculum is far lower than spherical speculum simultaneously.
Drawings
FIG. 1 is a schematic view of a cylindrical multiple reflection absorption cell of the present utility model;
FIG. 2 is a perspective view of a cylindrical multiple reflection absorption cell of the present utility model;
FIG. 3 is a single beam path diagram of a cylindrical multiple reflection absorption cell of the present utility model.
Reference numerals illustrate:
a parallel light source 1, a reflector 2 and an anti-spherical-aberration cylindrical mirror 3.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-3, the present embodiment provides a cylindrical multiple reflection absorption cell, which includes a parallel light source 1, a reflector 2, and a lens, wherein the reflector 2 has a cylindrical structure with a reflective surface on an inner wall, and has a center point, the parallel light source 1 adopts a laser, and the lens adopts an anti-spherical-aberration cylindrical mirror 3. The parallel light source 1 and the anti-spherical-aberration cylindrical mirror 3 are arranged outside the reflecting mirror 2, and the anti-spherical-aberration cylindrical mirror 3 is arranged at a position near the center point of the reflecting mirror 2 in the horizontal direction after the parallel light emitted by the parallel light source 1 is refracted by the anti-spherical-aberration cylindrical mirror 3.
As shown in the figure, the parallel light source 1 emits parallel light, which passes through the spherical aberration-eliminating cylindrical mirror 3 and then converges near the center point of the emission mirror 2 on the horizontal plane, while maintaining the original parallel state on the vertical plane. The incident direction of the parallel light on the horizontal plane after passing through the anti-spherical-aberration cylindrical mirror 3 does not pass through the center point of the reflecting mirror 1, but is slightly deviated from the center point, so that the light beam in the horizontal plane is reflected by the reflecting mirror 1 and then is converged to the other side of the center point again, and the light beam is reciprocated in this way, thereby forming multiple reflections which are performed around the cylinder.
Meanwhile, on the vertical plane, the light beam is not emitted horizontally, but is slightly inclined upwards by an angle, so that when the light beam is reflected in the reflector 1 for multiple times, each reflection point is slightly upwards offset along the axial direction of the cylinder than the last time, and after the reflection point surrounds one circle, interference with the original incidence point is avoided to interrupt, and the light beam continuously surrounds the cylinder above the incidence point to reflect, so that the optical path can be doubled, and a higher optical path is realized.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A cylindrical multiple reflection absorption cell is characterized in that: the light source device comprises a parallel light source, a reflecting mirror and a lens, wherein the reflecting mirror is of a cylindrical structure with the inner wall being a reflecting surface, the reflecting mirror is provided with a center point, the parallel light source and the lens are arranged outside the reflecting mirror, and the lens is arranged at a position near the center point of the reflecting mirror in order to realize that parallel light emitted by the parallel light source is converged in the horizontal direction after being refracted by the lens.
2. The cylindrical multiple reflection absorption cell according to claim 1, wherein: the lens adopts an anti-spherical-aberration cylindrical mirror.
3. The cylindrical multiple reflection absorption cell according to claim 1, wherein: the parallel light source adopts a laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320934918.8U CN220019380U (en) | 2023-04-24 | 2023-04-24 | Cylindrical multiple reflection absorption tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320934918.8U CN220019380U (en) | 2023-04-24 | 2023-04-24 | Cylindrical multiple reflection absorption tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220019380U true CN220019380U (en) | 2023-11-14 |
Family
ID=88688292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320934918.8U Active CN220019380U (en) | 2023-04-24 | 2023-04-24 | Cylindrical multiple reflection absorption tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220019380U (en) |
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2023
- 2023-04-24 CN CN202320934918.8U patent/CN220019380U/en active Active
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