CN203191304U - Optical path structure of dual-optical-path fiber optical spectrometer - Google Patents
Optical path structure of dual-optical-path fiber optical spectrometer Download PDFInfo
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- CN203191304U CN203191304U CN 201320125681 CN201320125681U CN203191304U CN 203191304 U CN203191304 U CN 203191304U CN 201320125681 CN201320125681 CN 201320125681 CN 201320125681 U CN201320125681 U CN 201320125681U CN 203191304 U CN203191304 U CN 203191304U
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Abstract
The utility model belongs to the field of optical technology, relates to an optical path structure, and particularly relates to an optical path structure of a dual-optical-path fiber optical spectrometer. The optical path structure of the dual-optical-path fiber optical spectrometer comprises an optical platform, wherein a first light inlet and a second light inlet are formed in the optical platform; a half-reflecting translucent lens is arranged below the second light inlet; the opposite side of the half-reflecting translucent lens is provided with a collecting lens and the light ray input from the first light inlet and the light ray input from the second light inlet reach the surface of the collecting lens at the same time; an optical grating capable of receiving light rays issued from the collecting lens is arranged at the lower side of the half-reflecting translucent lens; the opposite side of the optical grating is provided with a reflecting lens for transmitting light rays onto a charge coupled device (CCD) sensor. The optical path structure of the dual-optical-path fiber optical spectrometer has the advantages that drifting and errors caused by light source variation are effectively eliminated, the minimum test base line of a spectrograph is 0.0005Abs, the influence of stray light is effectively reduced, and stray light within an effective test wavelength range is reduced to 0.1% below.
Description
Technical field
The utility model relates to optical technical field, about a kind of light channel structure, and especially a kind of double light path fiber spectrometer light channel structure.
Background technology
The spectral instrument basic equipment that to be applied optics technology, electronic technology and computer technology analyze and measure the composition of material and structure etc. is widely used in fields such as environmental monitoring, Industry Control, chemical analysis, food quality detection, material analysis, clinical examination, Aero-Space remote sensing and education of science.Owing to deficiencies such as traditional spectrometer exist complex structure, environment for use is limited, inconvenience is carried and expensive, can not satisfy the on-the-spot demand that detects and monitor in real time.Therefore fiber spectrometer just occurred, the development of fiber spectrometer technology makes determinand break away from the restriction in fixed sample pond, and it is more flexible that sample mode becomes, and is suitable for remote sample character surveillance.Though fiber spectrometer has had more advantage, but it still exists the some shortcomings part, micro fiber spectrometer on the market all is to adopt compact C-T light path, this light channel structure adopts the single fiber input, first condenser and second catoptron and grating adopt decussate texture, adopt line array CCD sensor receiving spectrum signal again, handle by computing machine at last; There is following problem in this light path: light path has only a light beam, can't eliminate the drift that light source brings; Intersection C-T light channel structure, incident light can't separate with emergent light, makes parasitic light more serious.
The utility model content
The purpose of this utility model is at the problems referred to above, provides a kind of reasonable in design, and the system that can realize finishes the double light path fiber spectrometer light channel structure that valid data are gathered with Best Times.
For achieving the above object, the utility model has adopted following technical proposal: a kind of double light path fiber spectrometer light channel structure, be arranged in the spectrometer, it is characterized in that, comprise optical table, this optical table is provided with first light inlet and second light inlet, described second light inlet below is provided with half-reflecting half mirror, the light that the half-reflecting half mirror offside is provided with when the light of first light inlet input and the input of second light inlet reaches its surperficial condenser simultaneously, the half-reflecting half mirror downside is provided with and can receives the grating that condenser emits beam, and the grating offside is provided with the catoptron that light can be sent on the ccd sensor.
In above-mentioned a kind of double light path fiber spectrometer light channel structure, described optical table is provided with several baffle plates, and this baffle plate be separately positioned on first light inlet, condenser and the grating below.
Compared with prior art, advantage of the present utility model is: can effectively eliminate drift and error that the light source change brings; Can make the minimum test baseline of spectrometer accomplish 0.0005Abs; Effectively reduce the influence of parasitic light, parasitic light drops to below 0.1% in the Validity Test wavelength coverage.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of double light path fiber spectrometer light channel structure, be arranged in the spectrometer, comprise optical table 1, described optical table is provided with several baffle plates 2, and this baffle plate is separately positioned on the below that can export the light parts, baffle plate can prevent that light from penetrating shadow-mark and ringing the miscellaneous part function, this optical table is provided with first light inlet 3 and second light inlet 4, described second light inlet below is provided with half-reflecting half mirror 5, the light that the half-reflecting half mirror offside is provided with when the light of first light inlet input and the input of second light inlet reaches its surperficial condenser 6 simultaneously, the half-reflecting half mirror downside is provided with and can receives the grating 8 that condenser emits beam, the grating offside is provided with the catoptron 7 that light can be sent on the ccd sensor 9, during the light input, through each parts, two-way spectrum is carried out light splitting, arrive on the ccd sensor simultaneously at last.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. double light path fiber spectrometer light channel structure, be arranged in the spectrometer, it is characterized in that, comprise optical table, this optical table is provided with first light inlet and second light inlet, described second light inlet below is provided with half-reflecting half mirror, the light that the half-reflecting half mirror offside is provided with when the light of first light inlet input and the input of second light inlet reaches its surperficial condenser simultaneously, the half-reflecting half mirror downside is provided with and can receives the grating that condenser emits beam, and the grating offside is provided with the catoptron that light can be sent on the ccd sensor.
2. according to the double light path fiber spectrometer light channel structure described in the claim 1, it is characterized in that described optical table is provided with several baffle plates, and this baffle plate be separately positioned on first light inlet, condenser and the grating below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125681 CN203191304U (en) | 2013-03-19 | 2013-03-19 | Optical path structure of dual-optical-path fiber optical spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320125681 CN203191304U (en) | 2013-03-19 | 2013-03-19 | Optical path structure of dual-optical-path fiber optical spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203191304U true CN203191304U (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320125681 Expired - Lifetime CN203191304U (en) | 2013-03-19 | 2013-03-19 | Optical path structure of dual-optical-path fiber optical spectrometer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203191304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775975A (en) * | 2014-01-30 | 2014-05-07 | 上海战古电子科技有限公司 | Lighting device with novel light path structure |
| CN109975239A (en) * | 2019-04-15 | 2019-07-05 | 北京市农林科学院 | Near-infrared spectrometers |
-
2013
- 2013-03-19 CN CN 201320125681 patent/CN203191304U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775975A (en) * | 2014-01-30 | 2014-05-07 | 上海战古电子科技有限公司 | Lighting device with novel light path structure |
| CN109975239A (en) * | 2019-04-15 | 2019-07-05 | 北京市农林科学院 | Near-infrared spectrometers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |