CN114812812B - Light path collimation adjusting and fixing mechanism of spectrum analyzer - Google Patents
Light path collimation adjusting and fixing mechanism of spectrum analyzer Download PDFInfo
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- CN114812812B CN114812812B CN202210737987.XA CN202210737987A CN114812812B CN 114812812 B CN114812812 B CN 114812812B CN 202210737987 A CN202210737987 A CN 202210737987A CN 114812812 B CN114812812 B CN 114812812B
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- 238000001228 spectrum Methods 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010183 spectrum analysis Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0202—Mechanical elements; Supports for optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0237—Adjustable, e.g. focussing
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
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- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Optics & Photonics (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
The invention discloses a light path collimation adjusting and fixing mechanism of a spectrum analyzer, and belongs to the technical field of instruments and meters. The mechanism mainly comprises a laser module, a laser mounting seat, a collimating lens and a fixing mechanism thereof, a dichroic mirror and a fixing mechanism thereof, and a collimating lens adjusting mechanism; the collimating lens adjusting mechanism is composed of a lens adjusting support, a precise adjusting screw, a micro-motion adjusting knob, a crossed roller sliding rail, a lens adjusting support fixing piece and the like, and when the collimating lens adjusting mechanism is used, the three-dimensional space position of the collimating lens is adjusted through the collimating lens adjusting mechanism, so that the aims of collimating a light path and fixing the whole light path structure are fulfilled. The mechanism of the invention is convenient and simple to adjust and fix, the light path which is well adjusted and fixed is accurate and stable, and the anti-interference and vibration capabilities are strong; the mechanism module can be installed and matched at the position required by the optical-mechanical structure, is convenient to disassemble, assemble and maintain, and has good application prospect in the light path collimation adjustment and fixation of the spectrum analyzer with the advantages of low cost and high flexibility.
Description
Technical Field
The invention relates to a light path collimation adjusting and fixing mechanism of a spectrum analyzer, belonging to the technical field of instruments and meters, in particular to the technical field of spectrum analyzers.
Background
Spectroscopic analysis is a method of identifying substances and determining their chemical composition and relative content based on their spectra. In an online laser spectrum gas analyzer, an online ultraviolet absorption spectrum gas analyzer and other common online spectrum analyzers, an optical-mechanical structure is an important component, and the adjustment process is an important step before spectrum analysis; the light path collimation is an important component of the optical-mechanical adjustment, and the accuracy and stability of the collimation greatly influence the final result of the optical-mechanical adjustment, so that the analysis result of the spectrum analyzer is influenced.
The collimation of current spectral analysis appearance light path is adjusted and is fixed few method and device of open application, is in laboratory application stage mostly, and laser instrument collimation structure part almost all designs for being integrated as an organic whole with collimating lens and optical component in current spectral analysis appearance product, and this secondary regulation that just leads to the product to purchase the back and can't carry out the collimation light path has damaged the back and can't maintain moreover, has greatly improved the application cost of product.
Disclosure of Invention
Technical problem to be solved by the invention
The invention provides a light path collimation adjusting and fixing mechanism of a spectrum analyzer, aiming at the problems that the prior spectrum analyzer is lack of a collimation adjusting and fixing mechanism, the collimation structure is integrated and secondary adjustment cannot be carried out, and the like.
Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a light path collimation adjusting and fixing mechanism of a spectrum analyzer comprises a base, a laser module, a laser mounting seat, a collimation lens and a fixing mechanism thereof, a dichroic mirror and a fixing mechanism thereof, and a collimation lens adjusting mechanism, wherein the laser module is connected with the laser mounting seat, the laser mounting seat is fixed on the base, the collimation lens is connected with the laser mounting seat and is fixed through the lens fixing mechanism, the dichroic mirror is fixed through the dichroic mirror fixing mechanism, the dichroic mirror fixing mechanism is connected with the base, and the position of the dichroic mirror fixing mechanism on the base is adjustable;
the collimating lens adjusting mechanism adjusts the three-dimensional position of the collimating lens through the lens fixing mechanism and can fix the position of the collimating lens after the collimating lens is adjusted, so that light emitted by the laser module passes through the collimating lens to irradiate the dichroic mirror and then is reflected by the dichroic mirror.
Furthermore, the collimating lens adjusting mechanism comprises a lens adjusting bracket, a precision adjusting screw, a micro-motion adjusting knob, a crossed roller slide rail and a lens adjusting bracket fixing piece; the lens adjusting bracket fixing piece is arranged on the laser mounting seat, a slot is arranged on the lens adjusting bracket fixing piece, the crossed roller slide rail is arranged in the slot and can slide in the slot, the position of the crossed roller slide rail in the slot is fixed through the lens adjusting bracket fixing piece, and the lens adjusting bracket is connected with the crossed roller slide rail;
the precise adjusting screw, the fine adjustment knob is located on the lens adjusting support, the collimating lens is fixed in the lens fixing mechanism, the periphery of the lens fixing mechanism is provided with a groove matched with the precise adjusting screw, the lens adjusting support is provided with a groove corresponding to the lens fixing mechanism, a reset mechanism is arranged in the groove, after the mechanism is installed, the lens fixing mechanism is arranged in the groove of the lens adjusting support, the position of the collimating lens on the plane is adjusted through the precise adjusting screw, the groove of the lens fixing mechanism and the position of the collimating lens in the lens adjusting support in a matched mode through the reset mechanism in the lens adjusting support, the position of the collimating lens in the axial direction is adjusted through the sliding of the lens adjusting support in the crossed roller slide rail, the lens fixing mechanism is driven to finely adjust the position of the collimating lens in the axial direction through the precise adjusting screw, and the lens adjusting support is driven to finely adjust the light path through the fine adjustment knob.
Furthermore, the grooves on the periphery of the lens fixing mechanism are V-shaped grooves.
Furthermore, the lens adjusting bracket slotting internal resetting mechanism is a combined spring.
Furthermore, the precise adjusting screws comprise a first adjusting screw, a second adjusting screw and a third adjusting screw, and the positions of the collimating lenses in the three-dimensional direction are respectively adjusted correspondingly.
Advantageous effects
The mechanism can be used for carrying out light path collimation adjustment and fixation on the spectrum analyzer on line and during analysis and test of a system, the collimated light path after adjustment and fixation is accurate and stable, and the anti-interference and anti-vibration capabilities are strong;
the mechanism is an independent module, can be mounted and dismounted at the position required by the optical machine structure, and is convenient to maintain and replace;
the invention has simple structure and low cost, and has wide application prospect in the fields of air pollution research, environment monitoring, gas purity analysis, process monitoring, exhaust gas analysis, petroleum exploration geological logging process monitoring and the like.
Drawings
FIG. 1 is an overall structural view of the mechanism of the present invention;
FIG. 2 is a front view of the mechanism of the present invention;
FIG. 3 is a top view of the mechanism of the present invention;
FIG. 4 is a left side view of the mechanism of the present invention;
FIG. 5 is a schematic view of the mechanism of the present invention adjusting the movement of the collimating lens in the XY direction;
FIG. 6 is a schematic structural view of a lens fixing mechanism according to the present invention;
FIG. 7 is a schematic view of the mechanism of the present invention producing a collimated light path;
the reference numbers in the figures illustrate: the laser comprises a laser module 1, a collimating lens 2, a lens fixing mechanism 3, a lens adjusting support 4, a precision adjusting screw 5, a micro-motion adjusting knob 6, a dichroic mirror fixing mechanism 7, a dichroic mirror 8, a base 9, a cross roller slide rail 10, a lens adjusting support fixing part 11 and a laser mounting seat 12.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings.
As shown in fig. 1-4, a laser module 1 is connected with a laser mounting base 12, the laser mounting base 12 is fixed in a specific slot of a base 9, a collimating lens 2 is connected with the laser mounting base 12 and fixed by a lens fixing mechanism 3, a dichroic mirror 8 is fixed in a specific slot of a dichroic mirror fixing mechanism 7, and the dichroic mirror fixing mechanism 7 and the base 9 are adjusted and fixed by screws; the precise adjusting screw 5 and the fine adjusting knob 6 are positioned on the lens adjusting support 4, the collimating lens 2 is fixed inside the lens fixing mechanism 3, the lens adjusting support 4 is provided with a slot corresponding to the lens fixing mechanism 3, and after the mechanism is installed, the lens fixing mechanism 3 is arranged in the slot of the lens adjusting support 4.
The lens adjusting bracket fixing piece 11 is arranged on the laser installation base 12, a groove is arranged on the lens adjusting bracket fixing piece 11, the crossed roller slide rail 10 is arranged in the groove and can slide in the groove, the position of the crossed roller slide rail 10 is fixed through the lens adjusting bracket fixing piece 11, and the lens adjusting bracket 4 is connected with the crossed roller slide rail 10.
As shown in fig. 5 and 6, the collimating lens 2 is installed in the lens fixing mechanism 3, the lens fixing mechanism 3 is disposed in the groove of the lens adjusting bracket 4, and V-shaped grooves are formed around the lens fixing mechanism 3 and are matched with the fine adjusting screws 5 and the round-head cylindrical pin installed on the lens adjusting bracket 4. Through the installation fix at the peripheral accurate adjusting screw 5 of lens adjusting support 4 fluting and the mutual effort cooperation of opposite side button head cylindric lock and combination spring separately for lens fixed establishment 3 can remove certain distance at XY plane level or vertically, uses the adjustable accurate adjusting screw 5 of conventional allen key, and it is convenient to adjust, and the precision is higher. Meanwhile, the lens adjusting support 4 is connected and matched with the laser mounting seat 12 through a crossed roller slide rail 10, and then the lens adjusting support 4 can move in the Z-axis direction through a fine adjusting knob 6 or a fine adjusting screw 5 arranged in the Z-axis direction of the collimating lens adjusting support 4 to drive the lens fixing mechanism 3 to move in the Z-axis direction, so that the collimating lens 2 moves in the Z-axis direction, and the position of the collimating lens 2 in the three-dimensional direction of the space can be adjusted through combined operation. The cross roller slide rail 10 has high precision, and the vibration and the offset are extremely small during sliding; the micro-motion adjusting knob 6 can be manually adjusted, and is convenient to adjust and high in precision. After the position of the collimating lens 2 is adjusted and confirmed, the lens adjusting support 4 and the laser mounting seat 12 are locked together by using the lens adjusting support fixing piece 11 through screws, and then the crossed roller slide rail 10 can be locked and cannot slide; when the system is used for testing and analyzing, the light path can be repeatedly and finely adjusted to a required state through the mechanism and then locked and fixed, and the mechanism is convenient and quick. The base 9 can be connected and fixed with other modules through positioning pins and screws, and is convenient to mount and dismount and high in interchangeability.
Fig. 7 is a schematic diagram of a collimating optical path generated by the mechanism of the present invention, a laser and a corresponding control circuit board are integrated inside the laser module 1, and light emitted by the laser passes through the collimating lens 2 and irradiates the dichroic mirror 8, and then is reflected by the dichroic mirror 8.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, without departing from the spirit of the present invention, a person of ordinary skill in the art should understand that the present invention shall not be limited to the embodiments and the similar structural modes without creative design.
Claims (5)
1. A light path collimation adjusting and fixing mechanism of a spectrum analyzer is characterized by comprising a base (9), a laser module (1), a laser mounting seat (12), a collimation lens (2) and a fixing mechanism (3) thereof, a dichroic mirror (8) and a fixing mechanism (7) thereof, and a collimation lens adjusting mechanism, the laser module (1) is connected with the laser mounting seat (12), the laser mounting seat (12) is fixed on the base (9), the collimating lens (2) is connected with the laser mounting seat (12) and is fixed through the lens fixing mechanism (3), the dichroic mirror (8) is fixed by the dichroic mirror fixing mechanism (7), the dichroic mirror fixing mechanism (7) is connected with the base (9), and the position of the dichroic mirror fixing mechanism on the base is adjustable;
the collimating lens adjusting mechanism is used for adjusting the three-dimensional position of the collimating lens (2) through the lens fixing mechanism (3) and can be used for fixing the position of the collimated lens after the collimating lens is adjusted, so that light emitted by the laser module (1) passes through the collimating lens (2) and irradiates on the dichroic mirror (8) and then is reflected out through the dichroic mirror (8).
2. The optical path collimation adjusting and fixing mechanism of the optical spectrum analyzer as claimed in claim 1, wherein the collimation lens adjusting mechanism comprises a lens adjusting bracket (4), a precision adjusting screw (5), a micro-motion adjusting knob (6), a cross roller sliding rail (10), and a lens adjusting bracket fixing piece (11);
the lens adjusting support fixing piece (11) is installed on the laser installation seat (12), a groove is formed in the lens adjusting support fixing piece (11), the crossed roller slide rail (10) is installed in the groove and can slide in the groove, the crossed roller slide rail (10) is fixed in the groove through the lens adjusting support fixing piece (11), and the lens adjusting support (4) is connected with the crossed roller slide rail (10);
the precision adjusting screw (5) and the micro-motion adjusting knob (6) are positioned on the lens adjusting support (4), the collimating lens (2) is fixed in the lens fixing mechanism (3), the lens fixing mechanism (3) is provided with a groove matched with the precision adjusting screw (5) all around, the lens adjusting support (4) is provided with a groove corresponding to the lens fixing mechanism (3), a reset mechanism is arranged in the groove, after the mechanism is installed, the lens fixing mechanism (3) is arranged in the groove of the lens adjusting support (4), the collimating lens (2) is adjusted in the plane through the matching of the precision adjusting screw, the groove of the lens fixing mechanism (3) and the reset mechanism in the lens adjusting support (4), and the collimating lens (2) is adjusted in the axial position through the sliding adjustment of the lens adjusting support (4) in the crossed roller slide rail (10), the lens fixing mechanism (3) is driven by a precise adjusting screw to align the straight lens (2) to be finely adjusted in the axial position, and the lens adjusting bracket (4) is driven by a fine adjusting knob (6) to finely adjust the light path.
3. The optical path alignment adjusting and fixing mechanism of the optical spectrum analyzer as claimed in claim 2, wherein the groove around the lens fixing mechanism (3) is a V-shaped groove.
4. The optical path alignment adjusting and fixing mechanism of the optical spectrum analyzer as claimed in claim 2, wherein the slotted internal reset mechanism of the lens adjusting bracket (4) is a combination spring.
5. The optical path alignment adjusting and fixing mechanism of the optical spectrum analyzer as claimed in claim 2, wherein the fine adjustment screws (5) comprise a first adjustment screw, a second adjustment screw and a third adjustment screw, which respectively adjust the position of the collimating lens (2) in the three-dimensional direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737987.XA CN114812812B (en) | 2022-06-28 | 2022-06-28 | Light path collimation adjusting and fixing mechanism of spectrum analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210737987.XA CN114812812B (en) | 2022-06-28 | 2022-06-28 | Light path collimation adjusting and fixing mechanism of spectrum analyzer |
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| Publication Number | Publication Date |
|---|---|
| CN114812812A CN114812812A (en) | 2022-07-29 |
| CN114812812B true CN114812812B (en) | 2022-09-09 |
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| CN202210737987.XA Active CN114812812B (en) | 2022-06-28 | 2022-06-28 | Light path collimation adjusting and fixing mechanism of spectrum analyzer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040006745A (en) * | 2002-07-15 | 2004-01-24 | 주식회사 기화정밀 | A position-control structure for collimate lens |
| CN107131952A (en) * | 2017-06-19 | 2017-09-05 | 杭州春来科技有限公司 | Adjustable Laser emission end and laser analyzer |
| CN109507779A (en) * | 2018-12-29 | 2019-03-22 | 中南大学 | Lens holder mechanism for butterfly semiconductor laser automatic coupling package |
| CN109613655A (en) * | 2019-01-17 | 2019-04-12 | 苏州旭创科技有限公司 | A kind of optical module and its manufacturing method |
| CN111929796A (en) * | 2020-08-19 | 2020-11-13 | 青岛澳瑞德电子有限公司 | Light path adjusting structure with variable light spots |
| CN113514153A (en) * | 2021-08-24 | 2021-10-19 | 天津捷强动力装备股份有限公司 | Method and device for effectively improving detection precision of spectrometer |
-
2022
- 2022-06-28 CN CN202210737987.XA patent/CN114812812B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040006745A (en) * | 2002-07-15 | 2004-01-24 | 주식회사 기화정밀 | A position-control structure for collimate lens |
| CN107131952A (en) * | 2017-06-19 | 2017-09-05 | 杭州春来科技有限公司 | Adjustable Laser emission end and laser analyzer |
| CN109507779A (en) * | 2018-12-29 | 2019-03-22 | 中南大学 | Lens holder mechanism for butterfly semiconductor laser automatic coupling package |
| CN109613655A (en) * | 2019-01-17 | 2019-04-12 | 苏州旭创科技有限公司 | A kind of optical module and its manufacturing method |
| CN111929796A (en) * | 2020-08-19 | 2020-11-13 | 青岛澳瑞德电子有限公司 | Light path adjusting structure with variable light spots |
| CN113514153A (en) * | 2021-08-24 | 2021-10-19 | 天津捷强动力装备股份有限公司 | Method and device for effectively improving detection precision of spectrometer |
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| CN114812812A (en) | 2022-07-29 |
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