CN208537393U - Multiple reflections gas absorption cell suitable for point light source - Google Patents

Multiple reflections gas absorption cell suitable for point light source Download PDF

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Publication number
CN208537393U
CN208537393U CN201821008909.1U CN201821008909U CN208537393U CN 208537393 U CN208537393 U CN 208537393U CN 201821008909 U CN201821008909 U CN 201821008909U CN 208537393 U CN208537393 U CN 208537393U
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China
Prior art keywords
reflecting mirror
multiple reflections
light
absorption cell
mirror
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CN201821008909.1U
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Chinese (zh)
Inventor
王向前
王新全
武玉松
武婧
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Qingdao Laoying Haina Photoelectric Environmental Protection Group Co ltd
Qingdao Liangyi Intelligent Technology Co.,Ltd.
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Qingdao Blue Wing Optics Co Ltd
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Priority to CN201821008909.1U priority Critical patent/CN208537393U/en
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  • Optical Measuring Cells (AREA)

Abstract

The utility model relates to optical gas analyzer technical fields, more particularly, to a kind of multiple reflections gas absorption cell suitable for point light source.The multiple reflections gas absorption cell includes: the first reflecting mirror, the second reflecting mirror and lens barrel;First reflecting mirror and the second reflecting mirror relative spacing it is fixed on the both ends of lens barrel;First reflecting mirror and the second reflecting mirror close to it is mutual be on one side reflecting surface, and the first reflecting mirror and the reflecting surface of the second reflecting mirror are the identical spherical concave surface of radius of curvature;First reflecting mirror is provided centrally with light well;Second reflecting mirror is provided centrally with light hole.User can the distance of processing sets up the first reflecting mirror and the second reflecting mirror as needed incident light multiple reflections are realized into more long light path.Double mirror geometries shrink gas cell internal diameter simultaneously, increases relative aperture, has the advantages that structure is simple, adjustment is simple, stability is good, relative aperture is big, optical length, volume is small, is easy to criticize production.

Description

Multiple reflections gas absorption cell suitable for point light source
Technical field
The utility model relates to optical gas analyzer technical fields, more particularly, to a kind of suitable for the multiple of point light source Reflected gas absorption cell.
Background technique
Gas absorption cell is the core sensing element of optical absorption method gas analyzer.Using point light source, The optical path length and relative aperture of gas absorption cell are an important technical indicators.
In order to detect the gas of lower concentration, longer optical path length is generally required, and is needed in more long light path There is biggish relative aperture to guarantee enough light energies.Reduce gas again under conditions of meeting long light path and object lens of large relative aperture The mechanical dimension of absorption cell and volume often select the scheme of reflecting mirror multiple reflections.
Comparing the classical multiple reflections formula gas absorption cell suitable for point light source is White's type gas absorption cell, but White Type gas absorption cell needs three sheets of reflecting mirrors, and structure is complicated, and resetting difficulty is big, and stability is poor, and its relative aperture receives Wherein more small-bore aperture of a mirror limitation, bigger relative aperture just need bigger gas absorption cell volume.
Utility model content
The purpose of this utility model is to provide a kind of multiple reflections gas absorption cells suitable for point light source, existing to solve Have relative aperture present in technology it is big when gas absorption cell volume it is big, the technical issues of structure is complicated.
A kind of multiple reflections gas absorption cell suitable for point light source provided by the utility model, should be suitable for point light source Multiple reflections gas absorption cell includes: the first reflecting mirror, the second reflecting mirror and lens barrel;
First reflecting mirror is fixed on the both ends of the lens barrel with the second reflecting mirror relative spacing;Described first Reflecting mirror and second reflecting mirror close to it is mutual be on one side reflecting surface, and first reflecting mirror and described second anti- The reflecting surface for penetrating mirror is the identical spherical concave surface of radius of curvature;
First reflecting mirror is provided centrally with light well;Second reflecting mirror is provided centrally with light hole;Institute The upper end for stating lens barrel is provided with air inlet, and lower end is provided with gas outlet.
Further, first reflecting mirror and second reflecting mirror are detachably connected with the lens barrel.
Further, first reflecting mirror is fixed on the lens barrel by the first mounting base;Second reflecting mirror It is fixed on the lens barrel by the second mounting base.
Further, first reflecting mirror is located at first mounting base close to one end of second mounting base;Institute It states the second reflecting mirror and is located at second mounting base close to one end of first mounting base;
In first mounting base and second mounting base at setting corresponding with the light well and the light hole It is respectively arranged with light inlet and light-emitting window.
Further, entering light filter is set in the light inlet;Light filter is provided with out in the light-emitting window.
Further, suction nozzle is provided at the air inlet;Outlet nozzle is provided at the gas outlet.
The utility model provides a kind of multiple reflections gas absorption cell suitable for point light source, which absorbs Pond includes: the first reflecting mirror, the second reflecting mirror and lens barrel, and first reflecting mirror is with the second reflecting mirror relative spacing It is fixed on the both ends of the lens barrel, the reflecting surface of the first reflecting mirror and the second reflecting mirror is the spherical concave and convex mirrors of same curvature.It is logical Curvature and the relative distance of the first reflecting mirror of adjustment and the second reflecting mirror are crossed to adjust time that light beam is assembled between two reflecting mirrors Number, to change light path size.Light injects gas absorption cell by light well, through two reflecting surface multiple reflections post-concentrations to out Unthreaded hole projects.
Multiple reflections gas absorption cell provided by the utility model suitable for point light source, user can process as needed The distance of first reflecting mirror and the second reflecting mirror is set, by incident light multiple reflections, realizes more long light path.Double mirror simultaneously Geometries shrink gas cell internal diameter, increases relative aperture, has that structure is simple, adjustment is simple, stability is good, relative aperture Greatly, optical length, volume are small, are easy to criticize the advantages of producing, and are suitable for the optical gas analyzer using point radiant and are suitable for evil Under bad environmental condition.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural representation of the multiple reflections gas absorption cell provided by the embodiment of the utility model suitable for point light source Figure;
Fig. 2 is the structure for the multiple reflections gas absorption cell suitable for point light source that another embodiment of the utility model provides Schematic diagram;
Fig. 3 is the structure principle chart of the first reflecting mirror and the second reflecting mirror provided by the embodiment of the utility model;
Fig. 4 is the structure principle chart of the first reflecting mirror and the second reflecting mirror that another embodiment of the utility model provides.
Appended drawing reference:
The first mounting base of 1-;The first threaded ring of 2-;3- entering light filter;
The first reflecting mirror of 4-;5- suction nozzle;6- lens barrel;
The first temperature sensor of 7-;8- second temperature sensor;9- sensor installation seat;
The second mounting base of 10-;The second threaded ring of 11-;The second reflecting mirror of 12-;
13- outlet nozzle;14- air inlet;15- light well;
16- light hole;The gas outlet 17-.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.
Fig. 1 is the structural representation of the multiple reflections gas absorption cell provided by the embodiment of the utility model suitable for point light source Figure;Fig. 2 is the structural representation for the multiple reflections gas absorption cell suitable for point light source that another embodiment of the utility model provides Figure;As depicted in figs. 1 and 2, the utility model embodiment provides a kind of multiple reflections gas absorption cell suitable for point light source, should Multiple reflections gas absorption cell suitable for point light source includes: the first reflecting mirror 4, the second reflecting mirror 12 and lens barrel 6;First is anti- It is fixed on the both ends of lens barrel 6 with penetrating 12 relative spacing of mirror 4 and the second reflecting mirror;First reflecting mirror 4 and the second reflecting mirror 12 are close Mutual be reflecting surface on one side, and the first reflecting mirror 4 is in for radius of curvature is identical with the reflecting surface of the second reflecting mirror 12 Spherical concave surface;First reflecting mirror 4 is provided centrally with light well 15;Second reflecting mirror 12 is provided centrally with light hole 16;Mirror The upper end of cylinder 6 is provided with air inlet 14, and lower end is provided with gas outlet 17.
The utility model embodiment provides a kind of multiple reflections gas absorption cell suitable for point light source, the multiple reflections gas Body absorption cell includes: the first reflecting mirror 4, the second reflecting mirror 12 and lens barrel 6, and the first reflecting mirror 4 and the second reflecting mirror 12 are opposite Compartment of terrain is fixed on the both ends of lens barrel 6, and the reflecting surface of the first reflecting mirror 4 and the second reflecting mirror 12 is the spherical surface concave surface of same curvature Mirror.Light beam is adjusted between two reflecting mirrors by adjusting the curvature and relative distance of the first reflecting mirror 4 and the second reflecting mirror 12 The number of convergence, to change light path size.Light injects gas absorption cell by light well 15, through two reflecting surface multiple reflections Post-concentration is projected to light hole 16.
Wherein, light well 15 and light hole 16 are circular hole.
Multiple reflections gas absorption cell provided by the embodiment of the utility model suitable for point light source, user can be according to need Incident light multiple reflections are realized more long light path by the distance for wanting processing sets up the first reflecting mirror 4 and the second reflecting mirror 12.Together When double mirror geometries shrink gas cell internal diameter, increase relative aperture, have structure is simple, adjustment is simple, stability is good, The big optical length of relative aperture, volume is small, is easy to criticize the advantages of producing, and is suitable for the optical gas analyzer using point radiant and fits Under the conditions of rugged environment.
On the basis of the above embodiments, further, the first reflecting mirror 4 and the second reflecting mirror 12 are removable with lens barrel 6 It connects with unloading.
In the present embodiment, the first reflecting mirror 4 and the second reflecting mirror 12 are detachably connected with lens barrel 6, convenient for users to installation Setting.
Fig. 3 is the structure principle chart of the first reflecting mirror and the second reflecting mirror provided by the embodiment of the utility model;Such as Fig. 3 institute Show, as one embodiment, the radius of curvature SR=119.8mm of the reflecting surface of the first reflecting mirror 4 and the second reflecting mirror 12, mouth Diameter A=37mm, distance L=178mm, relative aperture D=0.1, light path P=534mm.
Fig. 4 is the structure principle chart of the first reflecting mirror and the second reflecting mirror that another embodiment of the utility model provides;Such as Shown in Fig. 4, the present embodiment optimizes on the basis of example 1, by the first reflecting mirror 4, the song of the second reflecting mirror 12 Rate radius SR is adjusted to SR=137mm, and reflecting mirror distance L, bore A, relative aperture D is constant, incident beam can realize 5 times it is anti- It penetrates, light path P=890mm, to realize the increase of light path by adjusting mirror curvature radius.
On the basis of the above embodiments, further, the first reflecting mirror 4 is fixed on lens barrel 6 by the first mounting base 1 On;Second reflecting mirror 12 is fixed on lens barrel 6 by the second mounting base 10.
In the present embodiment, the first reflecting mirror 4 and the second reflecting mirror 12 pass through the first mounting base 1 and the second mounting base 10 respectively It is fixed on lens barrel 6, installation is facilitated to fix.
On the basis of the above embodiments, further, the first reflecting mirror 4 is located at the first mounting base 1 close to the second installation One end of seat 10;Second reflecting mirror 12 is located at the second mounting base 10 close to one end of the first mounting base 1;First mounting base 1 and Light inlet and light-emitting window are respectively arranged at setting corresponding with light well 15 and light hole 16 in two mounting bases 10.
In the present embodiment, the first reflecting mirror 4 and the second reflecting mirror 12 are arranged in the first mounting base 1 and the second mounting base 10 Inside, can play the role of protecting the first reflecting mirror 4 and the second reflecting mirror 12.Point light source from light inlet by light well 15 into Enter in lens barrel 6, after multiple reflections, projects from light hole 16 and through light-emitting window.
On the basis of the above embodiments, further, entering light filter 3 is set in light inlet;It is provided with out in light-emitting window Light filter.
In the present embodiment, point light source enters light inlet and enters lens barrel 6 using light well 15 after the filtering of entering light filter 3 It is interior, it after multiple reflections, is projected from light hole 16, and finally projected after being gone out the filtering of light filter, improves the precision of detection.
Further, entering light filter 3 is fixed in the first mounting base 1 by the first threaded ring 2, and light filter passes through the out Two threaded rings 11 are fixed in the second mounting base 10.
On the basis of the above embodiments, further, heater strip is enclosed on the outer wall of lens barrel 6.
It in the present embodiment, is powered, lens barrel 6 can be heated to heater strip, to heat inside lens barrel 6, improved Detection accuracy.
On the basis of the above embodiments, further, it is provided with temperature sensor on lens barrel 6, for detecting in lens barrel 6 Temperature information.
In the present embodiment, temperature sensor is provided on lens barrel 6, temperature sensor detects the temperature information in lens barrel 6, and The temperature information is sent to control system, control system is according to the temperature information control heater strip heating received or stops Heating.
Further, temperature sensor is fixed on lens barrel 6 by sensor installation seat 9.
Further, temperature sensor is set as two, respectively the first temperature sensor 7 and second temperature sensor 8.
On the basis of the above embodiments, further, suction nozzle 5 is provided at air inlet;It is provided with out at gas outlet Gas nozzle 13.
In the present embodiment, the setting of suction nozzle 5 and outlet nozzle 13 facilitate air inlet and feeder and gas outlet with The connection of external device (ED).
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (6)

1. a kind of multiple reflections gas absorption cell suitable for point light source characterized by comprising the first reflecting mirror, second are instead Penetrate mirror and lens barrel;
First reflecting mirror is fixed on the both ends of the lens barrel with the second reflecting mirror relative spacing;First reflection Mirror and second reflecting mirror close to it is mutual be on one side reflecting surface, and first reflecting mirror and second reflecting mirror Reflecting surface be the identical spherical concave surface of radius of curvature;
First reflecting mirror is provided centrally with light well;Second reflecting mirror is provided centrally with light hole;The mirror The upper end of cylinder is provided with air inlet, and lower end is provided with gas outlet.
2. the multiple reflections gas absorption cell according to claim 1 suitable for point light source, which is characterized in that described first Reflecting mirror and second reflecting mirror are detachably connected with the lens barrel.
3. the multiple reflections gas absorption cell according to claim 1 suitable for point light source, which is characterized in that described first Reflecting mirror is fixed on the lens barrel by the first mounting base;Second reflecting mirror is fixed on the mirror by the second mounting base On cylinder.
4. the multiple reflections gas absorption cell according to claim 3 suitable for point light source, which is characterized in that described first Reflecting mirror is located at first mounting base close to one end of second mounting base;Second reflecting mirror is located at second peace Dress seats against one end of nearly first mounting base;
Distinguish at setting corresponding with the light well and the light hole in first mounting base and second mounting base It is provided with light inlet and light-emitting window.
5. the multiple reflections gas absorption cell according to claim 4 suitable for point light source, which is characterized in that the entering light Entering light filter is set in mouthful;Light filter is provided with out in the light-emitting window.
6. the multiple reflections gas absorption cell according to claim 1 suitable for point light source, which is characterized in that the air inlet Suction nozzle is provided at mouthful;Outlet nozzle is provided at the gas outlet.
CN201821008909.1U 2018-06-27 2018-06-27 Multiple reflections gas absorption cell suitable for point light source Active CN208537393U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821008909.1U CN208537393U (en) 2018-06-27 2018-06-27 Multiple reflections gas absorption cell suitable for point light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821008909.1U CN208537393U (en) 2018-06-27 2018-06-27 Multiple reflections gas absorption cell suitable for point light source

Publications (1)

Publication Number Publication Date
CN208537393U true CN208537393U (en) 2019-02-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109030372A (en) * 2018-06-27 2018-12-18 青岛蓝翼光学有限公司 Multiple reflections gas absorption cell suitable for point light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109030372A (en) * 2018-06-27 2018-12-18 青岛蓝翼光学有限公司 Multiple reflections gas absorption cell suitable for point light source

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GR01 Patent grant
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CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 266112 No.68, Guangxian Road, high tech Zone, Qingdao, Shandong Province

Patentee after: Qingdao Liangyi Intelligent Technology Co.,Ltd.

Address before: 266000 No. 21 Songyuan Road, Qingdao High-tech Zone, Shandong Province

Patentee before: QINGDAO LANYI OPTICAL Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20191022

Address after: 266400 no.379 Hedong Road, high tech Zone, Qingdao, Shandong Province

Patentee after: Qingdao Laoying Haina Photoelectric Environmental Protection Group Co.,Ltd.

Address before: 266112 No.68, Guangxian Road, high tech Zone, Qingdao, Shandong Province

Patentee before: Qingdao Liangyi Intelligent Technology Co.,Ltd.