CN107421891B - Huriott pool and debugging method thereof - Google Patents
Huriott pool and debugging method thereof Download PDFInfo
- Publication number
- CN107421891B CN107421891B CN201710424760.9A CN201710424760A CN107421891B CN 107421891 B CN107421891 B CN 107421891B CN 201710424760 A CN201710424760 A CN 201710424760A CN 107421891 B CN107421891 B CN 107421891B
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- optical system
- adjusting
- debugging
- base
- herriott cell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
Abstract
The invention provides a Huriott cell and a debugging method thereof, wherein the Huriott cell comprises: a guide rail; a left optical system and a right optical system disposed on the rail, the left optical system comprising: a reflecting mirror; the reflector seat is suitable for fixing the reflector; the guide rail penetrates through the base; a first set of connectors connecting the base and mirror mount at different locations; the first group of adjusting parts are used for adjusting the distance between the base and the reflector base at different positions. The invention has the advantages of disassembly, convenient assembly, small volume, good adaptability and the like.
Description
Technical Field
The invention relates to a gas measuring cell, in particular to a Herriott cell and a debugging method thereof.
Background
The Herriott cell is widely applied to a long-path gas absorption cell due to the fact that the Herriott cell has the advantage of being relatively insensitive to thermal deformation of an optical structure. However, since the herriott cell has strict requirements on the distance between the two mirrors, the position and the angle of the incident light and the outgoing light. Therefore, the mechanical structure for adjusting the optical path is important.
In the prior art, the regulation and fixation of the herriott cell is carried out in two ways:
1. after the auxiliary device is used for adjusting to a proper position, the auxiliary device is fixed by glue; the main disadvantages of this approach are:
the operation is complicated, and the precision control is poor. Also, being not detachable, the whole device faces the problem of scrapping once the device is assembled and adjusted incorrectly. Furthermore, the glue shrinks during curing, so that the thermal stability is poor, and the adjustment result is different from the expected result. Furthermore, it is difficult to adjust simultaneously in multiple degrees of freedom when fixing.
2. An optical alignment jig is used. The single optical adjusting frame can realize the adjustment of single degree of freedom, if the adjustment of multiple degrees of freedom is to be realized, the combination is needed, so that the volume of the adjusting mechanism is overlarge, the volume of the cavity is increased along with the adjustment, and the rapid response of gas detection cannot be realized.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the Herriott cell which is high in adjusting precision, detachable, convenient to assemble, small in size, good in stability and good in adaptability.
The invention aims at realizing the following technical scheme:
a herriott cell, the herriott cell comprising:
a guide rail;
a left optical system and a right optical system disposed on the rail, the left optical system comprising:
a reflecting mirror;
the reflector seat is suitable for fixing the reflector;
the guide rail penetrates through the base;
a first set of connectors connecting the base and mirror mount at different locations;
the first group of adjusting parts are used for adjusting the distance between the base and the reflector base at different positions.
The invention provides a precise, convenient and time-consuming method for debugging a Herriott cell, which is realized by the following technical scheme:
the method for debugging the Herriott pool comprises the following steps:
(A1) The debugging plate moves to a determined position on the right optical system side, and the emergent light passes through a first through hole on the debugging plate by adjusting the position of the emergent light of the light source;
(A2) The debugging plate moves to a determined position on the left side optical system side, and light rays pass through a second through hole on the debugging plate by adjusting the position of a reflecting mirror in the right side optical system;
(A3) The debugging plate moves to a determined position on the right optical system side, and the position of the reflecting mirror is adjusted by the first group of adjusting components, so that light rays pass through a third through hole on the debugging plate;
(A4) And removing the debugging plate, and adjusting the position of the light receiving component to ensure that the light power output by the light receiving component is maximum, and finishing the debugging.
Compared with the prior art, the invention has the following beneficial effects:
1. the multi-degree-of-freedom flexible adjusting device can enable the adjustment of the optical path of the Herriott cell to be quick, convenient and accurate;
the Herriott cell has compact structure, ensures that the cavity can reach small enough volume, and realizes the quick response of gas measurement;
2. the Herriott cell is detachable, reusable and convenient to maintain in the follow-up process;
3. the stable mechanical and supporting structure ensures that the whole Herriott cell has good thermal stability;
4. the structure of optical fiber incidence and optical fiber emergence can ensure the separation of the circuit board and the gas tank, so that the Herriott tank can be applied to various severe industrial environments and has extremely wide application range.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are only for illustrating the technical scheme of the present invention and are not intended to limit the scope of the present invention. In the figure:
fig. 1 is a schematic diagram of the structure of a herriott cell according to an embodiment of the present invention.
Detailed Description
Fig. 1 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. In order to teach the technical solution of the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or alternatives derived from these embodiments that fall within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Thus, the invention is not limited to the following alternative embodiments, but only by the claims and their equivalents.
Example 1:
fig. 1 schematically shows a schematic structure of a herriott cell according to an embodiment of the present invention, as shown in fig. 1, the herriott cell comprising:
the cross section of the guide rail 1, such as three guide rails, is circular;
a left optical system a and a right optical system B, which are provided on the guide rail 1, the left optical system a including:
a reflecting mirror;
a mirror mount 2 adapted to fix the mirror;
a base 4 through which the guide rail 1 passes;
a first set of connectors 8, such as springs, connecting the base and mirror mount at different locations;
a first set of adjustment members 9 that adjust the distance between the base and the mirror mount at different positions;
an adjustment seat 3 on which the light exit member 10 is adapted to be fixed;
a second set of connectors 7 connecting the base and the adjustment seat at different positions;
a second set of adjustment members 6 that adjust the distance between the base and the adjustment seat at different positions;
the debugging board 5 is provided with at least two through holes, is suitable for the light rays between the left optical system and the right optical system to pass through, and the positions of the through holes on the debugging board correspond to the relative positions between the debugging board and the reflecting mirror; when the relative position between the debug board and the mirror is determined, the position of the through hole on the debug board is also determined accordingly.
The debugging method of the herriott cell provided by the embodiment of the invention comprises the following steps of:
(A1) The debugging plate 5 is moved to a certain position on the side of the right optical system B, such as pressing the mirror in the right optical system B, that is, the relative position between the debugging plate and the mirror is determined (which is consistent with the relative position between the debugging plate and the mirror when the position of the through hole on the debugging plate is determined), the position of the outgoing light of the light source is adjusted so that the outgoing light passes through the first through hole on the debugging plate 5;
(A2) The debugging plate 5 is moved to a certain position on the side of the left optical system a, such as pressing the mirror in the left optical system a, i.e. the relative position between the debugging plate and the mirror is determined; by adjusting the position of the mirror in the right optical system B, the light passes through the second through hole on the debug board;
(A3) The adjusting plate 5 is moved to a certain position on the right side of the optical system B, such as pressing the mirror in the right side of the optical system B, and the position of the mirror is adjusted by the first group adjusting members 9 so that the light passes through the third through hole on the adjusting plate;
(A4) And (3) removing the debugging plate, and adjusting the position of the light receiving component 12 to enable the light power output by the light receiving component to be maximum, so that the debugging is finished.
Example 2:
application example of the herriott cell according to embodiment 1 of the present invention.
As shown in fig. 1, in this application example, the left optical system a and the right optical system B are the same; 3 guide rails 1 are adopted, the cross section of each guide rail perpendicular to the central axis of each guide rail is circular, the cross section of each guide rail is matched with the cross section of each guide rail, through holes on the base 4, through which the guide rails 1 pass, are circular, and the radius of each guide rail is equal to that of each through hole; the first group of connecting pieces 8 adopt springs, the first group of adjusting pieces 9 adopt bolts, the external threads of the bolts are matched with the internal threads of the through holes on the base 4, the end parts of the bolts penetrate through the through holes on the base and prop against the reflector seat, and the positions of the reflectors are adjusted by rotating the bolts; the end parts of the second group of connecting pieces 7 (such as bolts) freely pass through the through holes on the adjusting seat 3 and are connected with the base 4 in a threaded fit mode, so that the positions between the adjusting seat 3 and the base 4 are freely adjusted; the second group of adjusting parts 6 adopts jackscrews, the external threads of the jackscrews are matched with the internal threads of the through holes on the adjusting seat 3, the end parts of the jackscrews penetrate through the through holes on the adjusting seat and are propped against the base 4, and the positions of the light emergent parts 10 are adjusted by rotating the jackscrews; the light emergent part 10 adopts an optical fiber, and one end of the optical fiber is fixed in the through hole of the adjusting seat; the reflector seat 2 is in a herringbone shape, a bulge 11 is arranged on one side of the reflector seat facing the right optical system, a screw penetrates through the bulge, and the reflector is fixed between the bulges and clamped between the screw and the reflector seat; the light receiving part 12 adopts an optical fiber, and one end of the optical fiber is fixed in a through hole of an adjusting seat of the right optical system B; the position of the through hole on the debugging board 5 is obtained through optical simulation software, and grooves are formed in two opposite sides of the debugging board, and the through hole is suitable for being clamped on the guide rail and convenient to move or take down on the guide rail.
The debugging method of the herriott cell provided by the embodiment of the invention comprises the following steps of:
(A1) The debugging plate 5 is clamped on the guide rail and moves to a determined position on the side of the right optical system B, and presses the reflecting mirror in the right optical system B, so that the relative position of the debugging plate 5 and the reflecting mirror is determined (the relative position is consistent with the relative position between the debugging plate and the reflecting mirror when the position of the through hole on the debugging plate is determined), and the position of the adjusting seat 3, namely the position (containing angle information) of emergent light of the light emergent part 10, is adjusted through the second group of connecting pieces 7 and the second group of adjusting pieces 6, so that the emergent light passes through the first through hole on the debugging plate 5;
(A2) The debugging plate 5 moves to the determined position of the side of the left optical system A and presses the reflector in the left optical system A, so that the relative position of the debugging plate 5 and the reflector is determined, and the position of the reflector in the right optical system B is adjusted in the same way as the adjustment of the reflector in the left optical system A, so that light rays pass through a second through hole on the debugging plate;
(A3) The adjusting plate 5 moves to the determined position on the side of the right optical system B, presses the reflector in the right optical system B, so that the relative position of the adjusting plate 5 and the reflector is determined, and the position of the reflector is adjusted by the first group of adjusting parts 9, so that light passes through a third through hole on the adjusting plate;
(A4) And taking down the debugging board, and adjusting the position of the light receiving component 12 in the same way as the adjustment of the adjusting seat 3 in the left optical system A to ensure that the optical power output by the light receiving component is maximum, and finishing the debugging.
Claims (9)
1. A herriott cell, characterized by: the herriott cell includes:
a guide rail;
a left optical system and a right optical system disposed on the rail, the left optical system comprising:
a reflecting mirror;
the reflector seat is suitable for fixing the reflector;
the guide rail penetrates through the base;
a first set of connectors connecting the base and mirror mount at different locations;
the first group of adjusting parts are used for adjusting the distance between the base and the reflector seat at different positions;
and the debugging board is provided with at least two through holes and is suitable for the light rays between the left optical system and the right optical system to pass through.
2. A herriott cell according to claim 1, characterized in that: the herriott cell further includes:
an adjustment seat on which the light emitting member or the light receiving member is adapted to be fixed;
a second set of connectors connecting the base and the adjustment seat at different locations;
and the second group of adjusting parts are used for adjusting the distance between the base and the adjusting seat at different positions.
3. A herriott cell according to claim 1, characterized in that: the right optical system is identical to the left optical system.
4. A herriott cell according to claim 1, characterized in that: the number of the guide rails is not less than 2, and the outer edges of the guide rails are matched with the inner edges of through holes in the base, through which the guide rails penetrate.
5. A herriott cell according to claim 1, characterized in that: the number of the guide rails is 3, and the reflector base is in a herringbone shape.
6. A herriott cell according to claim 2, characterized in that: the first group of connecting pieces and the second group of connecting pieces adopt springs or bolts;
the first group of adjusting parts and the second group of adjusting parts adopt bolts or jackscrews.
7. A herriott cell according to claim 1, characterized in that: the position of the through hole on the debugging board is determined by optical simulation software.
8. A method of commissioning a herriott cell according to any one of claims 1-7, said method of commissioning comprising the steps of:
(A1) The debugging plate moves to a determined position on the right optical system side, and the emergent light passes through a first through hole on the debugging plate by adjusting the position of the emergent light of the light source;
(A2) The debugging plate moves to a determined position on the left side optical system side, and light rays pass through a second through hole on the debugging plate by adjusting the position of a reflecting mirror in the right side optical system;
(A3) The debugging plate moves to a determined position on the right optical system side, and the position of the reflecting mirror is adjusted by the first group of adjusting components, so that light rays pass through a third through hole on the debugging plate;
(A4) And removing the debugging plate, and adjusting the position of the light receiving component to ensure that the light power output by the light receiving component is maximum, and finishing the debugging.
9. The debugging method of claim 8, wherein: the position of the through hole on the debugging plate corresponds to the relative position between the debugging plate and the reflecting mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424760.9A CN107421891B (en) | 2017-06-07 | 2017-06-07 | Huriott pool and debugging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710424760.9A CN107421891B (en) | 2017-06-07 | 2017-06-07 | Huriott pool and debugging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107421891A CN107421891A (en) | 2017-12-01 |
| CN107421891B true CN107421891B (en) | 2023-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710424760.9A Active CN107421891B (en) | 2017-06-07 | 2017-06-07 | Huriott pool and debugging method thereof |
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| Country | Link |
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| CN (1) | CN107421891B (en) |
Citations (8)
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| CN101021572A (en) * | 2007-02-01 | 2007-08-22 | 河南中光学集团有限公司 | Adjustable optical axis reflector box |
| CN102879898A (en) * | 2012-09-29 | 2013-01-16 | 太原科技大学 | Automatic tunable system with multiple optical paths |
| CN203772733U (en) * | 2014-01-17 | 2014-08-13 | 浙江师范大学 | Device for ozone concentration detection based on visible absorption spectrum technology |
| CN104570274A (en) * | 2013-02-21 | 2015-04-29 | 海信集团有限公司 | Reflector adjusting device |
| CN105548014A (en) * | 2015-12-29 | 2016-05-04 | 中国科学院合肥物质科学研究院 | Optical absorption device with adjustable double absorption optical paths |
| CN106018276A (en) * | 2016-06-30 | 2016-10-12 | 杭州泽天科技有限公司 | Optical absorption cell |
| CN106706515A (en) * | 2015-11-15 | 2017-05-24 | 王帅 | Flue gas absorption equipment |
| CN207066974U (en) * | 2017-06-07 | 2018-03-02 | 上海禾赛光电科技有限公司 | New Maurice Herriott pond |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8693818B2 (en) * | 2011-09-15 | 2014-04-08 | Nistica, Inc. | Optical processing device |
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2017
- 2017-06-07 CN CN201710424760.9A patent/CN107421891B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101021572A (en) * | 2007-02-01 | 2007-08-22 | 河南中光学集团有限公司 | Adjustable optical axis reflector box |
| CN102879898A (en) * | 2012-09-29 | 2013-01-16 | 太原科技大学 | Automatic tunable system with multiple optical paths |
| CN104570274A (en) * | 2013-02-21 | 2015-04-29 | 海信集团有限公司 | Reflector adjusting device |
| CN203772733U (en) * | 2014-01-17 | 2014-08-13 | 浙江师范大学 | Device for ozone concentration detection based on visible absorption spectrum technology |
| CN106706515A (en) * | 2015-11-15 | 2017-05-24 | 王帅 | Flue gas absorption equipment |
| CN105548014A (en) * | 2015-12-29 | 2016-05-04 | 中国科学院合肥物质科学研究院 | Optical absorption device with adjustable double absorption optical paths |
| CN106018276A (en) * | 2016-06-30 | 2016-10-12 | 杭州泽天科技有限公司 | Optical absorption cell |
| CN207066974U (en) * | 2017-06-07 | 2018-03-02 | 上海禾赛光电科技有限公司 | New Maurice Herriott pond |
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| Publication number | Publication date |
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| CN107421891A (en) | 2017-12-01 |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: No.2 building, no.468 xinlai Road, Jiading District, Shanghai, 201821 Applicant after: Shanghai Hesai Technology Co.,Ltd. Address before: Room 206, building A4, 925 Yecheng Road, Jiading District, Shanghai, 201821 Applicant before: HESAI PHOTONICS TECHNOLOGY Co.,Ltd. |
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Address after: No.2 building, no.468 xinlai Road, Jiading District, Shanghai, 201821 Applicant after: Shanghai Hesai Technology Co.,Ltd. Address before: No.2 building, no.468 xinlai Road, Jiading District, Shanghai, 201821 Applicant before: Shanghai Hesai Technology Co.,Ltd. |
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