CN204556483U - A kind of adjustable detection light path device - Google Patents
A kind of adjustable detection light path device Download PDFInfo
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- CN204556483U CN204556483U CN201520052875.6U CN201520052875U CN204556483U CN 204556483 U CN204556483 U CN 204556483U CN 201520052875 U CN201520052875 U CN 201520052875U CN 204556483 U CN204556483 U CN 204556483U
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- light path
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- web member
- detection light
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Abstract
The utility model relates to gas detecting instrument field, particularly relates to a kind of adjustable detection light path device.Completely reflecting mirror, web member and spectrometer that this device comprises air chamber and sets gradually along the light path of air chamber outlet, air chamber outlet is provided with condenser lens, and completely reflecting mirror is placed on fabricated section, and fabricated section exports with air chamber and is connected, web member one end connects spectrometer, and the other end is connected with fabricated section is adjustable.This device is by arranging completely reflecting mirror, make the light penetrated in air chamber after completely reflecting mirror reflection, via the through hole incident light spectrometer of web member, reflection ray focuses near entrance spectrometer light mouth, pass through adjusting connector, the focus of entrance spectrometer light mouth and transmissive mirror is coincided, method for designing of the present utility model, the utilization ratio of light not only can be made to maximize, the position of outgoing optical focus can also be regulated, substitute optical fiber by physical construction mode, reduce cost, meanwhile, after mixing up detection light path, do not need to safeguard it.
Description
Technical field
The utility model relates to gas detecting instrument field, particularly relates to a kind of adjustable detection light path device.
Background technology
Difference absorption spectrum (DOAS) technology is based on the Differential Characteristics absorbing structure of tested dusty gas molecule at different-waveband, thus realizes detecting for the quantitative and qualitative analysis of dusty gas by difference absorption spectrum intensity.From current research, DOAS technology has a variety of, as NO, NO at the gas that ultraviolet-visible wave band can detect
2, SO
2, O
3, NH
3deng, current the method is used widely in the gas analyzer of air quality surveillance, and in its optical system for collecting, the overwhelming majority all applies the spectrometer of band optical fiber incident light mouth.
From the optical system for collecting of existing gas analyzer, the light signal after measured matter is linked into spectrometer by silica fibre, thus realizes the detection to light signal.From the service condition at scene, this kind of optical fiber lead-in mode exists that following some is not enough: 1, the clear aperature of optical fiber and numerical aperture less, the light intensity that spectrometer detection is arrived is more weak, reduces the utilization ratio of luminous energy, also relatively shortens the effective storage life of light source; 2, the connected mode of optical fiber, is unfavorable for the adjustment of optical fiber incidence end focus; 3, in optical fiber, the transmission of light is easily subject to the impact of fibre-optical bending degree, and therefore the mounting means of optical fiber can have influence on the detection of luminous energy; 4, optical fiber should not at Long-Time Service under comparatively macrobending angle, and the cost of optical fiber is higher.
Therefore, for above deficiency, the utility model provides a kind of adjustable detection light path device being applicable to use in gas analyzer spectrometer.
Summary of the invention
(1) technical matters that will solve
The purpose of this utility model is to provide a kind of adjustable detection light path device and penetrates optical focus position with the spectrometer that can not regulate solving prior art existence, the detection efficiency of light energy utilization is low, fiber kinks affects light energy detection and optical fiber serviceable life, and single unit system is by the problem of usage space restriction.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of adjustable detection light path device, completely reflecting mirror, web member and spectrometer that this device comprises air chamber and sets gradually along the light path of air chamber outlet, described air chamber outlet is provided with condenser lens, described completely reflecting mirror is placed on fabricated section, described fabricated section exports with described air chamber and is connected, and described web member one end connects described spectrometer, and the other end is connected with described fabricated section is adjustable.
Wherein, the normal of described completely reflecting mirror and the axis of described air chamber are 45 ° of angles.
Wherein, described fabricated section has two mutually perpendicular first through holes of axis and the second through hole, described first through hole and described air chamber pipe outlet, described second through hole is communicated with one end mouth of pipe of described web member.
Wherein, described fabricated section has third through-hole, described third through-hole periphery has mounting groove, and for placing described completely reflecting mirror, the axis of described third through-hole and the axis angle of described first through hole or the second through hole are 45 °.
Wherein, described third through-hole is provided with the fixed cap be threaded connection, and described fixed cap has yi word pattern technology groove.
Wherein, one end mouth of pipe of described web member stretches into described second through hole inside, is light face tight fit connection between described mouth of pipe outer wall and described second through hole.
Wherein, described second through hole outside is provided with stop nut, and described web member one end outer wall is corresponding has screw thread, and the screw thread of described web member outer wall screws with described stop nut and is connected.
Wherein, the other end of described web member has internal thread connection corresponding to the screw rod on described spectrometer.
Wherein, described stop nut inwall one end has internal thread, and one end is light face, and this light face is provided with register pin, coordinates locate with corresponding web member outer wall.
Wherein, described condenser lens is plano-convex lens or biconvex lens, described condenser lens convex surface facing described air chamber.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: completely reflecting mirror, web member and spectrometer that a kind of adjustable detection light path device that the utility model provides comprises air chamber and sets gradually along the light path of air chamber outlet, air chamber outlet is provided with condenser lens, completely reflecting mirror is placed on fabricated section, fabricated section exports with air chamber and is connected, web member one end connects spectrometer, and the other end is connected with fabricated section is adjustable.By arranging completely reflecting mirror and web member, make light by injecting web member after the reflection of completely reflecting mirror, then whole incident light spectrometer incident light mouth, luminous energy is through wider web member passage but not the narrow and small optical fiber of latus rectum, improve the utilization factor of luminous energy, the optical energy loss caused when avoiding use optical fiber bending and fiber lifetime shorten, affect detection and the transmission of luminous energy, when completely reflecting mirror and air chamber be 45 ° arrange time, light is after completely reflecting mirror reflection, incident ray and reflection ray is made to be 90 °, like this, air chamber and spectrometer are not placed in a direction, save the placement space of device, device of the present utility model is provided with web member, by the effective length of adjusting connector, entrance spectrometer light mouth can be made to repeat mutually with the focus of condenser lens, this device not only can make the utilization ratio of luminous energy maximize, the position of outgoing optical focus can also be regulated, optical fiber is substituted by physical construction mode, reduce cost, simultaneously, after mixing up detection light path, do not need to safeguard it.
Accompanying drawing explanation
Fig. 1 is a kind of adjustable detection light path device schematic diagram of the utility model;
Fig. 2 detects light path principle figure in Fig. 1;
Fig. 3 is the perspective view of web member in Fig. 1;
Fig. 4 is that in Fig. 3, fabricated section partly cuts open figure along through-hole diameter.
In figure, 1: air chamber; 2: condenser lens; 3: fabricated section; 4: stop nut; 5 web members; 6: spectrometer; 7: fixed cap; 8: completely reflecting mirror.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, the adjustable detection light path device of the one that the utility model provides, the completely reflecting mirror 8 comprising air chamber 1 and set gradually along the light path that air chamber 1 exports, web member 5 and spectrometer 6, air chamber 1 outlet is provided with condenser lens 2, the normal of completely reflecting mirror 8 and the axis of air chamber 1 are that 45° angle is arranged, completely reflecting mirror 8 is placed on fabricated section 3, web member 5 is connected with fabricated section 3 is adjustable, beat after completely reflecting mirror 8 same with 45 ° of angle of reflection with 45 ° of incident angles after light linearly penetrates in air chamber 1, reflection ray and incident ray is made to be the right angle of 90 °, completely reflecting mirror 8 is arranged on fabricated section 3, concrete detection light path principle as shown in Figure 2.The bending that can be realized light path by this device is changed, simultaneously maximal efficiency utilize luminous energy, adjusting connector 5 is flexibly connected with fabricated section 3, the distance of adjustable spectrometer 6 and completely reflecting mirror 8, thus entrance spectrometer light mouth is overlapped with the focus of lens, improve the utilization ratio of luminous energy in spectrometer, after detection light path is adjusted, do not need that adjustment is carried out to it again and safeguard.
As shown in Figure 4, fabricated section 3 has two mutually perpendicular first through holes of axis and the second through hole, first through hole and air chamber pipe outlet, described second through hole is communicated with the mouth of pipe of web member, like this, it is made to penetrate along in the chamber of web member after utilizing the ad hoc structure of fabricated section 3 to change light path.
As shown in Figure 4, fabricated section 3 has third through-hole, third through-hole periphery has mounting groove, for placing completely reflecting mirror 8, the axis of third through-hole and the axis angle of the first through hole or the second through hole are 45 °, this ensure that completely reflecting mirror 8 is installed smoothly, and incident ray can be met and emission of light angle is 90 °.
As shown in Figure 1; third through-hole on fabricated section is provided with fixed cap 7, and third through-hole and fixed cap 7 are threaded connection, and fixed cap have yi word pattern technology groove; can meet installation or removal completely reflecting mirror 8 by dismounting fixed cap 7, fixed cap 7 pairs of completely reflecting mirrors play a protective role simultaneously.
As shown in Figure 1, one end mouth of pipe of web member 5 stretches into the second through hole inside of fabricated section 3, it is light face tight fit connection between mouth of pipe outer wall and described second through hole, second through hole outside is provided with stop nut 4, as shown in Figure 3, one end outer wall of web member 5 is corresponding has screw thread, and the screw thread of web member 5 outer wall screws with stop nut 4 and is connected, and the other end of web member 5 has internal thread connection corresponding to the screw rod on spectrometer.Achieved the adjustment of distance by the degree of depth that the second through hole stretches into fabricated section inside by adjusting connector 5, during concrete operations, web member is deep into the depth capacity place in fabricated section, then stop nut 4 is tightened, stop nut 4 is moved towards the direction near fabricated section, make moving axially of web member and fabricated section spacing, in the utility model, stop nut inwall one end has internal thread, one end is light face, this light face is provided with register pin, coordinate with corresponding web member outer wall and locate, by the register pin on stop nut 4 and web member relative positioning, secure the fixed position relative of web member and fabricated section further.It should be noted that, in concrete enforcement, when web member stretches into fabricated section depth capacity, the focal length value of condenser lens need be greater than the light path of lens light-emitting window place to entrance spectrometer light mouth place, therefore turn stop nut 4 can be passed through, web member 5 is moved, until the focus adjusting to entrance spectrometer light mouth and condenser lens coincides to the outside of fabricated section 3.
In the utility model, the condenser lens of air chamber outlet adopts plano-convex lens or biconvex lens, and, condenser lens convex surface facing air chamber, in the present embodiment, have employed plano-convex lens, this plano-convex lens convex surface facing air chamber, plane towards completely reflecting mirror, be convenient to converge light, in concrete enforcement, biconvex lens or aspheric mirror also can be adopted to converge light.
In sum, the adjustable detection light path device of the one that the utility model provides, the position at outgoing optical focus place can be regulated, the utilization ratio of luminous energy is maximized, by changing light path, reducing the impact on usage space restriction, avoiding fiber kinks impact detection light path and optical fiber serviceable life, after this detection light path is adjusted, need hardly to regulate maintenance again.
Below be only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (10)
1. an adjustable detection light path device, it is characterized in that, the completely reflecting mirror, web member and the spectrometer that comprise air chamber and set gradually along the light path of air chamber outlet, described air chamber outlet is provided with condenser lens, described completely reflecting mirror is placed on fabricated section, described fabricated section exports with described air chamber and is connected, and described web member one end connects described spectrometer, and the other end is connected with described fabricated section is adjustable.
2. adjustable detection light path device according to claim 1, is characterized in that, the normal of described completely reflecting mirror and the axis of described air chamber are 45 ° of angles.
3. adjustable detection light path device according to claim 2, it is characterized in that, described fabricated section has two mutually perpendicular first through holes of axis and the second through hole, described first through hole and described air chamber pipe outlet, described second through hole is communicated with one end mouth of pipe of described web member.
4. adjustable detection light path device according to claim 3, it is characterized in that, described fabricated section has third through-hole, described third through-hole periphery has mounting groove, for placing described completely reflecting mirror, the axis of described third through-hole and the axis angle of described first through hole or the second through hole are 45 °.
5. adjustable detection light path device according to claim 4, it is characterized in that, described third through-hole is provided with the fixed cap be threaded connection, and described fixed cap has yi word pattern technology groove.
6. adjustable detection light path device according to claim 3, is characterized in that, one end mouth of pipe of described web member stretches into described second through hole inside, is light face tight fit connection between described mouth of pipe outer wall and described second through hole.
7. adjustable detection light path device according to claim 3, is characterized in that, described second through hole outside is provided with stop nut, and described web member one end outer wall is corresponding has screw thread, and the screw thread of described web member outer wall screws with described stop nut and is connected.
8. adjustable detection light path device according to claim 7, is characterized in that, the other end of described web member has internal thread connection corresponding to the screw rod on described spectrometer.
9. adjustable detection light path device according to claim 7, is characterized in that, described stop nut inwall one end has internal thread, and one end is light face, and this light face is provided with register pin, coordinates locate with corresponding web member outer wall.
10. adjustable detection light path device according to claim 1, is characterized in that, described condenser lens is plano-convex lens or biconvex lens, described condenser lens convex surface facing described air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052875.6U CN204556483U (en) | 2015-01-26 | 2015-01-26 | A kind of adjustable detection light path device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052875.6U CN204556483U (en) | 2015-01-26 | 2015-01-26 | A kind of adjustable detection light path device |
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| CN204556483U true CN204556483U (en) | 2015-08-12 |
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| CN201520052875.6U Active CN204556483U (en) | 2015-01-26 | 2015-01-26 | A kind of adjustable detection light path device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596935A (en) * | 2015-01-26 | 2015-05-06 | 力合科技（湖南）股份有限公司 | Adjustable type detection light path device |
| CN107356546A (en) * | 2016-05-10 | 2017-11-17 | 热映光电股份有限公司 | Gas measurement device |
| CN109283152A (en) * | 2017-07-19 | 2019-01-29 | 热映光电股份有限公司 | Gas measurement device |
-
2015
- 2015-01-26 CN CN201520052875.6U patent/CN204556483U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596935A (en) * | 2015-01-26 | 2015-05-06 | 力合科技（湖南）股份有限公司 | Adjustable type detection light path device |
| CN107356546A (en) * | 2016-05-10 | 2017-11-17 | 热映光电股份有限公司 | Gas measurement device |
| CN109283152A (en) * | 2017-07-19 | 2019-01-29 | 热映光电股份有限公司 | Gas measurement device |
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| GR01 | Patent grant |