QCL reference module fixing and adjusting structure and adjusting and using method thereof

Through modular design and precision adjustment structure, the problem of difficult adjustment and fixation of the reference module of the quantum cascade analyzer is solved, and the effect of compact structure, easy maintenance and flexible adjustment is achieved.

CN119178751APending Publication Date: 2024-12-24NANJING HOPES TECH
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Patent Information

Application Number
CN202411314754.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-20
Publication Date
2024-12-24

AI Technical Summary

Technical Problem

The optical path adjustment and fixation of the existing quantum cascade analyzer reference modules have problems such as large structural volume and inconvenient secondary adjustment, and it is difficult for the prior art to achieve flexible optical path adjustment.

Method used

Using beam splitter and mirror fixing module, detector fixing module, chopper fixing module and off-axis parabolic focusing fixing adjustment module, the modular composition is achieved through screws and bolt connections, which is easy to install, disassemble and maintain, and is precise Adjust the three-dimensional direction position adjustment.

Benefits of technology

The structure of the QCL reference module is compact and modular, which is easy to install and maintain, improves the replaceability of optical components and the flexibility of optical path adjustment, and enhances the scalability of the system.

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Abstract

The invention discloses a QCL reference module fixing and adjusting structure and an adjusting and using method thereof.The QCL reference module fixing and adjusting structure comprises a beam splitter and reflector fixing module, a detector fixing module and an off-axis parabolic condensation fixing and adjusting module, and the beam splitter and reflector fixing module is arranged on the right side of the off-axis parabolic condensation fixing and adjusting module; a detector fixing module is arranged above the beam splitter and reflector fixing module, and a chopper fixing module is arranged between the beam splitter and reflector fixing module and the off-axis parabolic condensation fixing and adjusting module. The beam splitter and reflector fixing module comprises a beam splitter and reflector fixing base, a beam splitter, a beam splitter fixing piece, a second reflector and a second reflector fixing piece. The device is provided with the beam splitter and reflector fixing module, the detector fixing module and the off-axis parabolic condensation fixing and adjusting module, so that the device has the advantages of being compact in structure, high in expandability, convenient to fix and adjust an optical path and high in replaceability of optical elements.
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Description

Technical Field

[0001] The invention relates to a QCL reference module fixed adjustment structure and an adjustment and use method thereof. Background Art

[0002] The quantum cascade analyzer is an instrument that performs qualitative and quantitative analysis of gases based on the principle of molecular fundamental frequency vibration absorption. The adjustment and fixation of the optical path in the reference module is one of the key technologies in the analytical application of the quantum cascade analyzer.

[0003] The optical path adjustment and fixation of the existing quantum cascade analyzer reference module are mostly still in the laboratory stage. The fixation and adjustment of optical components require the use of specific fixtures. Some optical structures used inside the analyzer are large in size and the optical path system is integrated. After installation and fixation, it is inconvenient or even impossible to perform secondary adjustment of the optical path. For this reason, we propose a QCL reference module fixed adjustment structure and its adjustment method. Summary of the invention

[0004] The object of the present invention is to provide a QCL reference module fixed adjustment structure and an adjustment method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a QCL reference module fixing and adjusting structure, comprising a beam splitter and reflector fixing module, a detector fixing module and an off-axis parabolic focusing fixing and adjusting module, wherein the beam splitter and reflector fixing module is arranged on the right side of the off-axis parabolic focusing fixing and adjusting module, a detector fixing module is arranged on the upper position of the beam splitter and reflector fixing module, a chopper fixing module is arranged between the beam splitter and reflector fixing module and the off-axis parabolic focusing fixing and adjusting module, the beam splitter and reflector fixing module comprises a beam splitter and reflector fixing base, a beam splitter, a beam splitter fixing piece, a second reflector and a second reflector fixing piece, the beam splitter is arranged on the beam splitter fixing piece, and the beam splitter fixing piece is fixed to the internal position of the beam splitter and reflector fixing base by screws, a second reflector fixing piece is arranged on one side of the beam splitter and reflector fixing base, the second reflector is arranged on the second reflector fixing piece, and the second reflector fixing piece is fixed in the beam splitter and reflector fixing base by screws.

[0006] Preferably, a detector fixing module is arranged above the beam splitter and reflector fixing base, and the detector fixing module includes a detector and a detector fixing member, the detector fixing member is detachably connected to the beam splitter and reflector fixing base through bolts, and the detector is fixed to the detector fixing member through screws.

[0007] Preferably, the off-axis parabolic focusing fixed adjustment module includes an off-axis parabolic focusing fixed base, a first reflector, a first reflector fixing member, an off-axis parabolic condenser, and an off-axis parabolic condenser adjustment fixing member, the first reflector is arranged on the first reflector fixing member, and the first reflector fixing member is fixed to the upper position of the off-axis parabolic focusing fixed base by bolts, the off-axis parabolic condenser is fixed to the off-axis parabolic condenser adjustment fixing member by adjustable screws, and the off-axis parabolic condenser is arranged in the off-axis parabolic focusing fixed base, the off-axis parabolic condenser adjustment fixing member is arranged on the left surface of the off-axis parabolic condenser fixed base, and the off-axis parabolic condenser adjustment fixing member is connected and fixed to the off-axis parabolic condenser fixed base by screws.

[0008] Preferably, the chopper fixing module is detachably connected to the off-axis parabolic focusing fixing base via bolts.

[0009] Preferably, a bolt hole is provided on the upper portion of the off-axis parabolic focusing fixed base, and the off-axis parabolic focusing fixed base is connected to the ground via bolts.

[0010] Preferably, longitudinal bolt holes are provided on the beam splitter and reflector fixing base, and the beam splitter and reflector fixing base are connected to the ground via bolts.

[0011] Preferably, the size of the beam splitter is 1 inch, and the size of the second reflector is 0.5 inch.

[0012] Preferably, the size of the first reflector is 1 inch.

[0013] A method for adjusting and using a fixed adjustment structure of a QCL reference module, comprising the following steps:

[0014] (A) Irradiation beam splitting: After the external laser is irradiated onto the beam splitter according to the angle set by the device, the external laser is split into two beams;

[0015] (B) Path selection: One laser beam continues along the original path and passes through the optical path hole at the lower end of the chopper fixed module; the other laser beam is reflected by the beam splitter and enters the measurement cell;

[0016] (C) Multiple reflections: a laser beam passing through the optical path hole at the lower end of the chopper fixed module irradiates the off-axis parabolic condenser, is reflected to the first reflector through the focusing of the off-axis parabolic condenser, and is then reflected to the receiving area of ​​the detector through the first reflector; another laser beam entering the measuring cell is reflected multiple times in the measuring cell and irradiates the second reflector, is reflected by the second reflector and passes through the optical path hole at the upper end of the chopper fixed module, irradiates the off-axis parabolic condenser, is reflected to the first reflector through the focusing of the off-axis parabolic condenser, and is then reflected to the receiving area of ​​the detector through the first reflector;

[0017] (D) Optical path adjustment: During use, the off-axis parabolic condenser is adjusted in three dimensions by screwing the precision adjustment screws on the off-axis parabolic condenser adjustment fixture, so that the two laser beams eventually irradiate a certain set receiving area on the detector. After the adjustment is completed, the off-axis parabolic condenser is fixed by screws.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The QCL reference module fixed adjustment structure and the adjustment use method of the present invention divide the QCL reference module into a beam splitter and reflector fixed module, a detector fixed module, a chopper fixed module and an off-axis parabolic focusing fixed adjustment module according to the function, so that the QCL reference module structure layout is more reasonable, modularized and more compact;

[0020] 2. The QCL reference module fixing and adjusting structure and the adjusting and using method thereof of the present invention connect the fixed beam splitter and the reflector fixing module, the detector fixing module, the chopper fixing module and the off-axis parabolic focusing fixing and adjusting module by screws, which is convenient for installation, disassembly and maintenance, as well as the installation of other auxiliary components, and has strong scalability;

[0021] 3. The QCL reference module fixing and adjustment structure and the adjustment and use method of the present invention are implemented by fixing parts and screws for the installation and fixation of the optical elements of each module, which is convenient for installation, disassembly and maintenance, and the optical elements are highly replaceable;

[0022] 4. The fixed adjustment structure of the QCL reference module of the present invention and the adjustment and use method thereof are achieved by arranging an off-axis parabolic mirror and an off-axis parabolic condenser adjustment fixture in the off-axis parabolic condenser fixed adjustment module. The off-axis parabolic condenser adjustment fixture in the off-axis parabolic condenser fixed adjustment module can adjust the position of the off-axis parabolic condenser in the three-dimensional direction of space, and can also fix the off-axis parabolic condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall exploded view of the present invention;

[0024] Figure 2 For the present invention Figure 1 The overall three-dimensional front view of the device;

[0025] Figure 3 For the present invention Figure 1 Three-dimensional rear view of the entire device.

[0026] In the figure: 1. Beam splitter and reflector fixing module; 2. Beam splitter and reflector fixing base; 3. Beam splitter; 4. Beam splitter fixing piece; 5. Second reflector; 6. Second reflector fixing piece; 7. Detector fixing module; 8. Detector; 9. Detector fixing piece; 10. Chopper fixing module; 11. Off-axis parabolic condenser fixing adjustment module; 12. Off-axis parabolic condenser fixing base; 13. First reflector; 14. First reflector fixing piece; 15. Off-axis parabolic condenser; 16. Off-axis parabolic condenser adjustment fixing piece. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-3 The present invention provides a technical solution: a QCL reference module fixing and adjusting structure, comprising a beam splitter and reflector fixing module 1, a detector fixing module 7 and an off-axis parabolic focusing fixing and adjusting module 11, the beam splitter and reflector fixing module 1 is arranged on the right side of the off-axis parabolic focusing fixing and adjusting module 11, the detector fixing module 7 is arranged on the upper position of the beam splitter and reflector fixing module 1, a chopper fixing module 10 is arranged between the beam splitter and reflector fixing module 1 and the off-axis parabolic focusing fixing and adjusting module 11, the beam splitter and reflector fixing module 1 comprises a beam splitter and reflector fixing base 2, a beam splitter 3, a beam splitter fixing member 4, a second reflector and a second reflector fixing member 6, the beam splitter 3 is arranged on the beam splitter fixing member 4, and the beam splitter fixing member 4 is fixed to the inner position of the beam splitter and reflector fixing base 2 by screws;

[0029] A second reflector fixing part 6 is provided on one side of the beam splitter and reflector fixing base 2, the second reflector is provided on the second reflector fixing part 6, and the second reflector fixing part 6 is fixed in the beam splitter and reflector fixing base 2 by screws, a detector fixing module 7 is provided above the beam splitter and reflector fixing base 2, the detector fixing module 7 includes a detector 8 and a detector fixing part 9, the detector fixing part 9 is detachably connected to the beam splitter and reflector fixing base 2 by bolts, and the detector 8 is fixed to the detector fixing part 9 by screws;

[0030] The off-axis parabolic focusing fixing and adjusting module 11 comprises an off-axis parabolic focusing fixing base 12, a first reflector 13, a first reflector fixing member 14, an off-axis parabolic condenser 15, and an off-axis parabolic condenser adjusting and fixing member 16, wherein the first reflector 13 is arranged on the first reflector fixing member 14, and the first reflector fixing member 14 is fixed to the upper position of the off-axis parabolic focusing fixing base 12 by bolts, the off-axis parabolic condenser 15 is fixed to the off-axis parabolic condenser adjusting and fixing member 16 by adjustable screws, and the off-axis parabolic condenser 15 is arranged in the off-axis parabolic focusing fixing base 12, the off-axis parabolic condenser adjusting and fixing member 16 is arranged on the left surface of the off-axis parabolic focusing fixing base 12, and the off-axis parabolic condenser adjusting and fixing member 16 is connected and fixed to the off-axis parabolic condenser fixing base 12 by screws;

[0031] The chopper fixing module 10 is detachably connected to the off-axis parabolic focusing fixed base 12 by bolts. A bolt hole is provided on the upper position of the off-axis parabolic focusing fixed base 12. The off-axis parabolic focusing fixed base 12 is connected to the ground by bolts. A longitudinal bolt hole is provided on the beam splitter and reflector fixed base 2. The beam splitter and reflector fixed base 2 is connected to the ground by bolts. The size of the beam splitter 3 is 1 inch, the size of the second reflector is 0.5 inch, and the size of the first reflector 13 is 1 inch.

[0032] A method for adjusting and using a fixed adjustment structure of a QCL reference module, comprising the following steps:

[0033] (A) Irradiation and beam splitting: After the external laser is irradiated onto the beam splitter 3 according to the angle set by the device, the external laser is split into two beams;

[0034] (B) Path selection: one laser beam continues forward along the original path and passes through the optical path hole at the lower end of the chopper fixing module (10); the other laser beam is reflected by the beam splitter 3 and enters the measuring cell;

[0035] (C) Multiple reflections: a laser beam passing through the optical path hole at the lower end of the chopper fixed module 10 is irradiated onto the off-axis parabolic condenser 15, is reflected onto the first reflector 13 through the focusing of the off-axis parabolic condenser 15, and is then reflected to the receiving area of ​​the detector 8 through the first reflector 13; and another laser beam entering the measuring cell is irradiated onto the second reflector 5 after multiple reflections in the measuring cell, is reflected by the second reflector 5, passes through the optical path hole at the upper end of the chopper fixed module 10, irradiates the off-axis parabolic condenser 15, is reflected onto the first reflector 13 through the focusing of the off-axis parabolic condenser 15, and is then reflected to the receiving area of ​​the detector 8 through the first reflector 13;

[0036] (D) Light path adjustment: During use, the off-axis parabolic condenser 15 is adjusted in three-dimensional space by tightening the precision adjustment screws on the off-axis parabolic condenser adjustment fixture 16, so that the two laser beams are finally irradiated to a certain set receiving area on the detector 8. After the adjustment is completed, the off-axis parabolic condenser 15 is fixed by screws.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A QCL reference module fixing and adjusting structure, comprising a beam splitter and reflector fixing module (1), a detector fixing module (7) and an off-axis parabolic focusing fixing and adjusting module (11), characterized in that: The beam splitter and reflector fixing module (1) is arranged on the right side of the off-axis parabolic focusing fixing adjustment module (11); a detector fixing module (7) is arranged above the beam splitter and reflector fixing module (1); a chopper fixing module (10) is arranged between the beam splitter and reflector fixing module (1) and the off-axis parabolic focusing fixing adjustment module (11); the beam splitter and reflector fixing module (1) comprises a beam splitter and reflector fixing base (2), a beam splitter (3), a beam splitter fixing member (4) and a plurality of other fixing members. ), a second reflector (5) and a second reflector fixing member (6), the beam splitter (3) is arranged on the beam splitter fixing member (4), and the beam splitter fixing member (4) is fixed to an internal position of the beam splitter and reflector fixing base (2) by means of screws, a second reflector fixing member (6) is arranged on one side of the beam splitter and reflector fixing base (2), the second reflector (5) is arranged on the second reflector fixing member (6), and the second reflector fixing member (6) is fixed to the beam splitter and reflector fixing base (2) by means of screws.

2. A QCL reference module fixed adjustment structure according to claim 1, characterized in that: A detector fixing module (7) is arranged above the beam splitter and reflector fixing base (2), and the detector fixing module (7) comprises a detector (8) and a detector fixing member (9). The detector fixing member (9) is detachably connected to the beam splitter and reflector fixing base (2) via bolts, and the detector (8) and the detector fixing member (9) are fixed via screws.

3. The QCL reference module fixing and adjusting structure according to claim 1, characterized in that: The off-axis parabolic focusing fixed adjustment module (11) comprises an off-axis parabolic focusing fixed base (12), a first reflector (13), a first reflector fixing member (14), an off-axis parabolic focusing mirror (15), and an off-axis parabolic focusing mirror adjusting fixing member (16); the first reflector (13) is arranged on the first reflector fixing member (14), and the first reflector fixing member (14) is fixed to an upper position of the off-axis parabolic focusing fixed base (12) by means of bolts; the off-axis parabolic focusing mirror (15) is fixed to the off-axis parabolic focusing mirror adjusting fixing member (16) by means of adjustable screws; the off-axis parabolic focusing mirror (15) is arranged in the off-axis parabolic focusing fixed base (12); the off-axis parabolic focusing mirror adjusting fixing member (16) is arranged on the left surface of the off-axis parabolic focusing fixed base (12), and the off-axis parabolic focusing mirror adjusting fixing member (16) is connected and fixed to the off-axis parabolic focusing fixed base (12) by means of screws.

4. The QCL reference module fixing and adjusting structure according to claim 1, characterized in that: The chopper fixing module (10) is detachably connected to the off-axis parabolic focusing fixing base (12) via bolts.

5. The QCL reference module fixing and adjusting structure according to claim 3, characterized in that: A bolt hole is provided at the upper position of the off-axis parabolic light focusing fixed base (12), and the off-axis parabolic light focusing fixed base (12) is connected to the ground via bolts.

6. The QCL reference module fixing and adjusting structure according to claim 1, characterized in that: The beam splitter and reflector fixing base (2) is provided with longitudinal bolt holes, and the beam splitter and reflector fixing base (2) is connected to the ground via bolts.

7. The QCL reference module fixing and adjusting structure according to claim 1, characterized in that: The size of the beam splitter (3) is 1 inch, and the size of the second reflector (5) is 0.5 inch.

8. The QCL reference module fixing and adjusting structure according to claim 3, characterized in that: The size of the first reflector (13) is 1 inch.

9. A method for adjusting and using a QCL reference module fixed adjustment structure according to any one of claims 1 to 8, characterized in that: The following steps are involved: (A) Irradiation and beam splitting: After the external laser is irradiated onto the beam splitter (3) at the angle set by the device, the external laser is split into two beams; (B) Path selection: one laser beam continues forward along the original path and passes through the optical path hole at the lower end of the chopper fixing module (10); the other laser beam is reflected by the beam splitter (3) and enters the measuring cell; (C) Multiple reflections: a laser beam passing through the optical path hole at the lower end of the chopper fixed module (10) is irradiated onto the off-axis parabolic condenser (15), is reflected onto the first reflector (13) through the focusing of the off-axis parabolic condenser (15), and is then reflected onto the receiving area of ​​the detector (8) through the first reflector (13); and another laser beam entering the measuring cell is irradiated onto the second reflector (5) after multiple reflections in the measuring cell, is reflected by the second reflector (5) through the optical path hole at the upper end of the chopper fixed module (10), is irradiated onto the off-axis parabolic condenser (15), is reflected onto the first reflector (13) through the focusing of the off-axis parabolic condenser (15), and is then reflected onto the receiving area of ​​the detector (8) through the first reflector (13); (D) Light path adjustment: During use, the off-axis parabolic condenser (15) is adjusted in three dimensions by tightening the precision adjustment screw on the off-axis parabolic condenser adjustment fixture (16), so that the two laser beams are finally irradiated to a certain set receiving area on the detector (8). After the adjustment is completed, the off-axis parabolic condenser (15) is fixed by screws.