CN215448964U - Novel annular flat concave mirror optical multi-pass absorption pool - Google Patents
Novel annular flat concave mirror optical multi-pass absorption pool Download PDFInfo
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- CN215448964U CN215448964U CN202121874189.9U CN202121874189U CN215448964U CN 215448964 U CN215448964 U CN 215448964U CN 202121874189 U CN202121874189 U CN 202121874189U CN 215448964 U CN215448964 U CN 215448964U
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- concave mirror
- absorption cell
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- shell
- absorption
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Abstract
The utility model discloses a novel annular planoconvex mirror optical multi-pass absorption cell, which comprises an absorption cell outer shell and an absorption cell inner shell, wherein the absorption cell outer shell and the absorption cell inner shell are both of a hexagonal structure, threaded pipes are fixedly arranged in the middle of the corresponding positions of the absorption cell outer shell and the absorption cell inner shell, the number of the threaded pipes is three, and installation pipes are arranged on the inner wall threads of the threaded pipes. According to the utility model, a special tool is matched with a regular polygon groove arranged at one end of the driving ring, which is far away from the position of the mounting pipe, to drive the driving ring to rotate, so that the driving ring drives the mounting pipe to be in threaded connection with the inner wall of the threaded pipe, and the mounting pipe is moved out of the inner wall of the threaded pipe, so that the mounting pipe takes out the first flat concave mirror or the second flat concave mirror or the third flat concave mirror to be disassembled and replaced, the requirements of the device on the flat concave mirrors with different degrees are met, and the device can meet the requirements for performing diversity detection on different flat concave mirrors.
Description
Technical Field
The utility model relates to the technical field of optical detection, in particular to a novel annular planoconvex mirror optical multi-pass absorption cell.
Background
The optical multi-pass absorption cell is used as a high-sensitivity optical instrument and widely applied to laser optics and high-resolution laser absorption spectroscopy, and light rays are reflected for multiple times in a compact volume of the multi-pass cell to form stable light field distribution to realize a long optical path, so that the detection sensitivity and the detection limit are improved. At present, a common optical multipass cell, such as a Herriot multipass absorption cell using a spherical mirror and a method thereof disclosed in european patent application EP 2375237 AI, 10.12.2011. The multi-pass absorption cell mentioned in the patent application document of the utility model consists of an absorption cell body with an air inlet and an air outlet and flat concave mirrors positioned at two ends of the absorption cell body, wherein the concave surfaces of the two flat concave mirrors are oppositely arranged, the concave surfaces of the flat concave mirrors are plated with reflecting films, and the edges of the flat concave mirrors are provided with light holes; during detection, different reflection times of light are realized by adjusting the distance and the inclination angle of the two flat concave mirrors, and different absorption optical paths are obtained.
However, in the prior art, the optical multi-pass absorption cell is a product with fixed specification in actual use, and the internal planoconcave mirror is not easy to replace, so that the applicability of the device is greatly reduced, and the requirement for detecting the diversity of different planoconcave mirrors cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a novel annular flat concave mirror optical multi-pass absorption cell to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: including absorption tank shell and absorption tank inner shell, absorption tank shell and absorption tank inner shell are the hexagon and construct, the fixed screwed pipe that is provided with in middle part of absorption tank shell and absorption tank inner shell corresponding position, the quantity of screwed pipe is three, the inner wall screw thread of screwed pipe is provided with the installation pipe, and is three the inner wall of installation pipe is equallyd divide and is do not fixed the concave mirror that is provided with first flat concave mirror, the concave mirror that the second is flat and the concave mirror that the third is flat.
Preferably, the lengths of two adjacent sides of any one side of the absorption tank shell are equal, and the lengths of two adjacent sides of the absorption tank shell are unequal.
Preferably, a light inlet hole is formed in the middle of the first flat concave mirror, a light outlet hole is formed in the middle of the second flat concave mirror, the second flat concave mirror and the light outlet hole are horizontally arranged in a collinear manner, one end, corresponding to the light outlet hole, of the light inlet hole is located at the center of the first flat concave mirror, and one end, corresponding to the light inlet hole, of the light outlet hole is located at the center of the second flat concave mirror.
Preferably, the three screwed pipes are located in the middle of the side wall of the shorter side position of the outer shell of the absorption cell and the inner shell of the absorption cell, and the three screwed pipes are arranged annularly.
Preferably, the middle part fixedly connected with inlet port of arbitrary one longer limit of absorption cell outer shell and absorption cell inner shell, the middle part fixedly connected with venthole of arbitrary one longer limit of inlet port position is kept away from to absorption cell outer shell and absorption cell inner shell, inlet port and venthole are equallyd divide and are run through the both ends of absorption cell outer shell and absorption cell inner shell respectively in the activity.
Preferably, included angles among the first flat concave mirror, the second flat concave mirror and the third flat concave mirror are all 60 degrees, and the first flat concave mirror, the second flat concave mirror and the third flat concave mirror are equal in size.
Preferably, the one end fixedly connected with drive ring that the absorption cell inner shell position was kept away from to the installation pipe, and drive ring swing joint is at the inner wall of screwed pipe, drive ring and installation pipe are inside hollow structure, the one end inner wall that the installation pipe position was kept away from to the drive ring is equipped with regular polygon recess.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, a special tool is matched with a regular polygon groove arranged at one end of the driving ring, which is far away from the position of the mounting pipe, to drive the driving ring to rotate, so that the driving ring drives the mounting pipe to be in threaded connection with the inner wall of the threaded pipe, and the mounting pipe is moved out of the inner wall of the threaded pipe, so that the mounting pipe takes out the first flat concave mirror or the second flat concave mirror or the third flat concave mirror for disassembly and replacement, the requirements of the device on the flat concave mirrors with different degrees are met, and the device can meet the requirements for performing diversity detection on different flat concave mirrors;
2. the utility model also makes the exit position of the light inlet and the entrance position of the light outlet horizontally arranged in a same line no matter what angle the first concave mirror and the second concave mirror rotate to, thus the light can be reflected along the predetermined closed loop.
Drawings
FIG. 1 is a schematic view of the overall structure of a novel annular plano-concave mirror optical multi-pass absorption cell according to the present invention;
FIG. 2 is a sectional top view of the whole structure of the novel annular plano-concave mirror optical multi-pass absorption cell of the present invention;
fig. 3 is a sectional plan view of the first flat concave mirror structure of the novel annular flat concave mirror optical multi-pass absorption cell of the present invention.
In the figure: 1. an absorption tank shell; 2. an absorption tank inner shell; 3. a first flat concave mirror; 4. a second flat concave mirror; 5. a third planar concave mirror; 6. a light inlet hole; 7. a light exit hole; 8. an air inlet; 9. an air outlet; 10. a drive coil; 11. installing a pipe; 12. a threaded pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: including absorption cell outer shell 1 and absorption cell inner shell 2, absorption cell outer shell 1 and absorption cell inner shell 2 are the hexagon structure, and the middle part fixed mounting of the corresponding position of absorption cell outer shell 1 and absorption cell inner shell 2 has screwed pipe 12, and the quantity of screwed pipe 12 is three, and the inner wall threaded connection of screwed pipe 12 has an installation pipe 11, and the inner wall of three installation pipe 11 is equallyd divide and is do not fixed mounting have first flat concave mirror 3, the flat concave mirror 4 of second and the flat concave mirror 5 of third.
The lengths of two adjacent sides of any one side of the absorption tank shell 1 are equal, and the lengths of two adjacent sides of the absorption tank shell 1 are unequal.
The middle part of the first flat concave mirror 3 is provided with a light inlet hole 6, the middle part of the second flat concave mirror 4 is provided with a light outlet hole 7, the second flat concave mirror 4 and the light outlet hole 7 are horizontally arranged in a collinear way, one end of the light inlet hole 6 corresponding to the position of the light outlet hole 7 is positioned at the center of the first flat concave mirror 3, and one end of the light outlet hole 7 corresponding to the position of the light inlet hole 6 is positioned at the center of the second flat concave mirror 4.
The three threaded pipes 12 are all positioned in the middle of the side wall of the shorter side position of the absorption tank outer shell 1 and the absorption tank inner shell 2, and the three threaded pipes 12 are annularly arranged.
The middle part of any longer side of the absorption cell outer shell 1 and the absorption cell inner shell 2 is fixedly provided with an air inlet 8, the middle part of any longer side of the absorption cell outer shell 1 and the absorption cell inner shell 2 far away from the position of the air inlet 8 is fixedly provided with an air outlet 9, and the air inlet 8 and the air outlet 9 are equally divided into two ends which respectively movably penetrate through the absorption cell outer shell 1 and the absorption cell inner shell 2.
The included angles among the first flat concave mirror 3, the second flat concave mirror 4 and the third flat concave mirror 5 are all 60 degrees, and the sizes of the first flat concave mirror 3, the second flat concave mirror 4 and the third flat concave mirror 5 are equal.
One end fixed mounting that absorption pond inner shell 2 positions was kept away from to installation pipe 11 has drive ring 10, and drive ring 10 swing joint is at the inner wall of screwed pipe 12, and drive ring 10 and installation pipe 11 are inside hollow structure, and the one end inner wall that installation pipe 11 positions was kept away from to drive ring 10 is equipped with regular polygon recess.
The working principle is as follows: when in use, the utility model is provided with three circular threaded pipes 12, so that the included angle between the three threaded pipes 12 is 60 degrees, and further the included angle between the three mounting pipes 11 inside is 60 degrees, namely the included angle between the first flat concave mirror 3, the second flat concave mirror 4 and the third flat concave mirror 5 is always 60 degrees, when the first flat concave mirror 3 or the second flat concave mirror 4 or the third flat concave mirror 5 needs to be replaced, the driving ring 10 is driven to rotate by the regular polygon groove arranged at one end of the driving ring 10 far away from the mounting pipe 11, and further the driving ring 10 drives the mounting pipe 11 to be in threaded connection with the inner wall of the threaded pipe 12, and the mounting pipe 11 is moved out from the inner wall of the threaded pipe 12, so that the mounting pipe 11 takes out the first flat concave mirror 3 or the second flat concave mirror 4 or the third flat concave mirror 5 for disassembly and replacement, the requirement of the device for the flat concave mirrors with different degrees is met, the device can meet the requirement for detecting diversity of different flat concave mirrors, one end of the position of the light outlet hole 7 corresponding to the light inlet hole 6 is located at the center of the first flat concave mirror 3, and one end of the position of the light outlet hole 7 corresponding to the light inlet hole 6 is located at the center of the second flat concave mirror 4, so that no matter which angle the first flat concave mirror 3 and the second flat concave mirror 4 rotate to, the outlet position of the light inlet hole 6 and the inlet position of the light outlet hole 7 are arranged in a horizontal collinear mode all the time, light can be reflected along a preset closed loop, a Tracepro software simulation multi-pass absorption cell is used according to the requirement of a required optical path when the device is used, the optical path number is obtained, and the air inlet hole 8 and the air outlet hole 9 are communicated with gas to be detected. The laser beam shoots into light inlet 6, the laser beam enters into the absorption cell inner shell 2 through the light inlet 6 in the middle of the first flat concave mirror 3, then is reflected by the second flat concave mirror 4, and then is reflected to the first flat concave mirror 3 again after being shot to the third flat concave mirror 5, the laser beam is reflected for multiple times, stable light field distribution is formed in the absorption cell body, meanwhile, a long absorption optical path is realized, finally, the laser beam carrying the absorption information of the target gas to be detected is shot out from the light outlet 7 in the second flat concave mirror 4, and therefore the increase of the annular flat concave mirror multi-pass absorption cell to the effective absorption optical path is realized.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 (7)
1. The utility model provides a novel annular plano-concave mirror optics is led to absorption cell more, includes absorption cell outer shell (1) and absorption cell inner shell (2), its characterized in that: absorption cell outer shell (1) and absorption cell inner shell (2) are the hexagon structure, the fixed screwed pipe (12) that is provided with in middle part of absorption cell outer shell (1) and absorption cell inner shell (2) corresponding position, the quantity of screwed pipe (12) is three, the inner wall screw thread of screwed pipe (12) is provided with installation pipe (11), and is three the inner wall of installation pipe (11) is equallyd divide and is do not fixed first level concave mirror (3), the level and flat concave mirror of second (4) and the level and flat concave mirror of third (5) of being provided with.
2. The novel annular planoconvex lens optical multipass absorption cell according to claim 1, wherein: the lengths of two adjacent sides of any one side of the absorption tank shell (1) are equal, and the lengths of two adjacent sides of the absorption tank shell (1) are unequal.
3. The novel annular planoconvex lens optical multipass absorption cell according to claim 1, wherein: light inlet hole (6) have been seted up at the middle part of first flat concave mirror (3), light outlet hole (7) have been seted up at the middle part of the flat concave mirror of second (4), and the flat concave mirror of second (4) and light outlet hole (7) level collineation set up, the one end that light inlet hole (6) corresponding light outlet hole (7) position is located the center department of first flat concave mirror (3), and the one end that light outlet hole (7) corresponding light inlet hole (6) position is located the center department of the flat concave mirror of second (4).
4. The novel annular planoconvex lens optical multipass absorption cell according to claim 1, wherein: the three threaded pipes (12) are located in the middle of the side wall of the shorter side position of the absorption tank outer shell (1) and the absorption tank inner shell (2), and the three threaded pipes (12) are arranged in an annular shape.
5. The novel annular planoconvex lens optical multipass absorption cell according to claim 1, wherein: the middle part fixedly connected with inlet port (8) on arbitrary longer limit of absorption cell shell (1) and absorption cell inner shell (2), the middle part fixedly connected with venthole (9) on arbitrary longer limit of inlet port (8) position is kept away from in absorption cell shell (1) and absorption cell inner shell (2), the both ends that respectively the activity runs through absorption cell shell (1) and absorption cell inner shell (2) are equallyd divide in inlet port (8) and venthole (9).
6. The novel annular planoconvex lens optical multipass absorption cell according to claim 1, wherein: the included angles among the first flat concave mirror (3), the second flat concave mirror (4) and the third flat concave mirror (5) are all 60 degrees, and the sizes of the first flat concave mirror (3), the second flat concave mirror (4) and the third flat concave mirror (5) are equal.
7. The novel annular planoconvex lens optical multipass absorption cell according to claim 1, wherein: one end fixedly connected with drive ring (10) of absorption tank inner shell (2) position is kept away from in installation pipe (11), and drive ring (10) swing joint is at the inner wall of screwed pipe (12), drive ring (10) and installation pipe (11) are inside hollow structure, the one end inner wall that installation pipe (11) position was kept away from in drive ring (10) is equipped with regular polygon recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121874189.9U CN215448964U (en) | 2021-08-11 | 2021-08-11 | Novel annular flat concave mirror optical multi-pass absorption pool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121874189.9U CN215448964U (en) | 2021-08-11 | 2021-08-11 | Novel annular flat concave mirror optical multi-pass absorption pool |
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| Publication Number | Publication Date |
|---|---|
| CN215448964U true CN215448964U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121874189.9U Active CN215448964U (en) | 2021-08-11 | 2021-08-11 | Novel annular flat concave mirror optical multi-pass absorption pool |
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| Country | Link |
|---|---|
| CN (1) | CN215448964U (en) |
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2021
- 2021-08-11 CN CN202121874189.9U patent/CN215448964U/en active Active
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