CN203037349U - Compact type spectrum acquisition device - Google Patents
Compact type spectrum acquisition device Download PDFInfo
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- CN203037349U CN203037349U CN 201220646960 CN201220646960U CN203037349U CN 203037349 U CN203037349 U CN 203037349U CN 201220646960 CN201220646960 CN 201220646960 CN 201220646960 U CN201220646960 U CN 201220646960U CN 203037349 U CN203037349 U CN 203037349U
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- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012913 prioritisation Methods 0.000 description 3
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Abstract
Provided by the utility model is a compact type spectrum acquisition device that comprises an optical fiber, an optical fiber collimator, a grism, a first sleeve, a second sleeve, a third sleeve, a focusing lens group, a driving signal cable, a data transmission cable, a first fixed knob, a second fixed knob, and a linear array charge-coupled device (CCD). According to the utility model, coaxial arrangement of all components of the spectrum acquisition system is realized; and the provided device has the advantages of compact structure, small size and portability and the like.
Description
Technical field:
The utility model relates to spectral analysis and the imaging technique of spectrometer, relates in particular to a kind of compact spectrum harvester.
Background technology:
Spectrometer is the device that the spectrum key character of material is carried out rigorous analysis, also is the strong instrument of amalyzing substances constituent and structure.In recent years, the miniaturization development of spectrometer is very rapid, reported multiple miniaturization spectrometer at present, as based on the spectrometer of novel filtering technique, little processing grating spectrograph, fiber spectrometer etc., but in traditional prism or grating spectrum instrument, often have a deflection angle problem, namely incident beam and outgoing spectrum is not on same axis.Such system belongs to typical off-axis optical system, exist structural volume big, debug defectives such as difficulty, poor stability.
Compare with traditional spectral instrument, the miniaturization spectrometer is roughly the same on principle of work, but need to solve miniaturization and integrated problem, the main path of current spectral instrument system architecture miniaturization is by integrated processing, only utilizes the element of or less miniaturization to realize the miniaturization of total system.But this miniaturization spectrometer design exists shortcomings such as manufacturing cost height, processing technology complexity, spectral instrument poor-performing.
Summary of the invention:
Subject matter to be solved in the utility model is as more easy manufacturing process how, under the condition of lower manufacturing cost and adjusting difficulty, reduce the volume of spectrometer architecture, design a kind of compact spectrum harvester, realize the spectra collection of higher spectrum resolution performance.
The utility model solves above technical matters by the following technical solutions:
The utility model proposes a kind of compact spectrum harvester, comprise optical fiber, optical fiber collimator, rib grid, first sleeve, second sleeve, the 3rd sleeve, focus lens group, driving signal cable, data transmission cable, first fixed knob, second fixed knob, linear charge-coupled array CCD;
Wherein: described the 3rd sleeve is an end opening, the horizontal U-shaped sleeve of placing, and described linear charge-coupled array CCD is arranged on the base relative with its openend in the 3rd sleeve;
Described second sleeve is by forming with first substrate, second substrate that the inboard of two parallel sidewalls up and down of the 3rd sleeve is close to, is oppositely arranged respectively, one end of wherein said first substrate, second substrate stretches out the openend of the 3rd sleeve, the base of the other end of described first, second substrate and described the 3rd sleeve keeps certain distance, does not contact with described linear charge-coupled array CCD; First substrate is fixed by the openend of the upper side wall of second fixed knob and the 3rd sleeve, is respectively arranged with protuberance at the inwall of described first substrate, second substrate, and described protuberance is divided into first cavity, second cavity with second sleeve;
Described first sleeve is by being positioned at the 3rd substrate, the tetrabasal that the inwall of first cavity is close to, is oppositely arranged and forming respectively with on first substrate, second substrate; Wherein the 3rd substrate is fixed by an end of first fixed knob and first substrate;
Described optical fiber collimator is arranged in first sleeve end away from second cavity; Described rib grid are arranged on an end of close second cavity in first sleeve, keep certain distance with optical fiber collimator; Described focus lens group is arranged in second cavity; Described optical fiber is connected on the optical fiber collimator;
The base that one end of described driving signal cable, an end of data transmission cable pass described the 3rd sleeve respectively is connected with linear charge-coupled array CCD, and the other end of described driving signal cable, the other end of data transmission cable are connected with outside host computer.
As the further prioritization scheme of a kind of compact spectrum harvester of the present utility model, described focus lens group adopts improved Ke Ke three-chip type lens combination, comprises first lens, second lens, the 3rd lens, the 4th lens, the 5th lens;
One side of wherein said first lens up and down two ends respectively with described first, second substrate on the protuberance clamping, one side of the opposite side of described first lens and second lens is glued together, the two ends of described the 3rd lens adopt the two ends up and down of a side of opposite side, the 4th lens of set collar and second lens to be connected respectively, one side of the opposite side of described the 4th lens and the 5th lens is glued together, and the two ends up and down of the opposite side of described the 5th lens adopt set collar to be connected with the inwall of first, second substrate respectively.
As the further prioritization scheme of a kind of compact spectrum harvester of the present utility model, described rib grid are made up of first prism, grating substrate, grating, grating cover glass, second prism; Wherein, described grating substrate, grating cover glass are separately positioned on the both sides of grating, and described first prism and grating substrate are glued together, and described second prism and grating cover glass are glued together.
As the further prioritization scheme of a kind of compact spectrum harvester of the present utility model, the Aviiva SM2 molded lines array charge-coupled device CCD that described linear charge-coupled array CCD adopts French Atmel company to produce.
The utlity model has following advantage:
1. by adopting the light splitting light path based on the rib grid, the chief ray of outgoing spectral centroid wavelength light and the chief ray of incident beam are on the optical axis of focus lens group together, realize the coaxial arrangement of each parts of spectra collection system, have that compact conformation, volume are little, advantage such as be easy to carry.
2. by adopting the structure of three layers of sleeve, can carry out relative adjustment between first sleeve, second sleeve and the 3rd sleeve, regulating second sleeve makes the reverse extending line of incident light spectrum of focus lens group converge on the object space focal plane of this lens combination, regulating the 3rd sleeve makes each spectral component vernier focusing on the photosurface of line array CCD, thereby realize the accurate focusing to each spectral component, improve the performance of spectra collection system.
3. by with in the coaxial sleeve that is placed in sealing of each parts in the compact spectrum acquisition system, avoided each inner parts to disturb the skew of contingent position or damage because being subjected to external shock, and the light splitting light path is encapsulated in the airtight sleeve, prevented the undesired signal that parasitic light incident forms, this spectrometer project organization has the stability of layout of raising, eliminate interference of stray light, prolong intrinsic advantage such as device serviceable life.
Description of drawings
Fig. 1 is the structural representation of the rib grid of a kind of compact spectrum of the utility model harvester.
Fig. 2 is the structural representation of a kind of compact spectrum of the utility model harvester.
Embodiment:
Below in conjunction with accompanying drawing the technical solution of the utility model is described in further details:
As shown in Figure 1: the synoptic diagram of described rib grid 3 comprises first prism 20, grating substrate 21, grating 22, grating cover glass 23, second prism, 24 compositions.Wherein first prism 20 and grating substrate 21 are glued together, and grating cover glass 23 and second prism 24 are glued together, in rib grid 3, are formed a whole by first prism 20, grating substrate 21, grating 22, grating cover glass 23 and second prism 24.First prism 20 and second prism 24 are chosen in dispersionless glass material in the compact spectrum harvester service band, thereby the effect of the light path of turning back is only played in assurance to incident beam and outgoing spectrum.Grating substrate 21 and grating cover glass 23 adopt the glass with first prism 20 and second prism, 24 same materials, and play the effect of accepting grating, protection front and back device.
The prism of getting suitable angle according to different wave length is right, make the process of incident ray through refraction, chromatic dispersion, birefringence, the chief ray of the spectral centroid wavelength light of outgoing and the chief ray of incident light are on the optical axis of focus lens group together, thereby realize the coaxial arrangement of each parts in this compact spectrum acquisition system.
For example, the spectral centroid wavelength of surveying is 580nm, and the grating in the rib grid 3 22 has 1000 lines to every millimeter incisure density, and the refractive index of establishing first prism 20 and second prism 24 is 1.5, by choosing first prism 20 and second prism 24 that the base angle is 45 degree, then can make tested incident beam after 20 refractions of first prism, incide rib grid 3 chromatic dispersion takes place, and incident angle equates with the emergence angle of the chief ray of outgoing spectrum centre wavelength light, spectrum is through 2 refractions of second prism, make the chief ray of the chief ray of outgoing spectrum centre wavelength light of outgoing rib grid 3 and incident light with being on the optical axis of focus lens group, thereby realize the coaxial arrangement of each parts in this compact spectrum acquisition system.
A kind of compact spectrum harvester structural representation as shown in Figure 2 comprises optical fiber 1, optical fiber collimator 2, rib grid 3, first sleeve 4, second sleeve 5, the 3rd sleeve 6, focus lens group 7, drives signal cable 8, data transmission cable 9, first fixed knob 10, second fixed knob 11, linear charge-coupled array CCD12, first lens 13, second lens 14, the 3rd lens 15, the 4th lens 16, the 5th lens 17,3 set collars 18, protuberance 19;
The 3rd sleeve 6 is enclosed within outside second sleeve 5, and inwall one end of the 3rd sleeve 6 and second sleeve, 5 outer walls closely are slidingly connected, and fixes relative position between second sleeve 5 and the 3rd sleeve 6 by second fixed knob 11; Second sleeve 5 is enclosed within outside first sleeve 4, and inwall one end of second sleeve 5 and first sleeve, 4 outer walls closely are slidingly connected, and fixes relative position between first sleeve 4 and second sleeve 5 by first fixed knob 10.Can carry out relative adjustment between first sleeve 4, second sleeve 5 and the 3rd sleeve 6, realization is to the accurate focusing of each spectral components, regulate second sleeve 5 and make the reverse extending line of incident light spectrum of focus lens group converge on the object space focal plane of this lens combination 7, regulate the 3rd sleeve 6 and make on the photosurface of the accurate linear charge-coupled array CCD12 of each spectral components.Inner thread section start at second sleeve 5 processes a protrusion 19; be used for fixed first lens 5 in the position of sleeve; linear charge-coupled array CCD12 in the 3rd sleeve 6 is equipped with screening glass outward, makes three sleeves can not damage each optical device in the sleeve in the focusing process of relative motion.
One end fixed fiber collimating apparatus 2 of first sleeve, 4 inboards, the other end is rib grid 3 fixedly, optical fiber collimator 2 is connected with optical fiber 1, and tested incident beam incides rib grid 3 chromatic dispersion takes place behind optical fiber collimator 2 collimations, and the outgoing spectrum of formation incides focus lens group 7 and focuses on.
Second sleeve, 5 one ends are provided with focus lens group 7, adopt improved Ke Ke three-chip type lens combination, Ke Ke three-chip type lens combination can be passed through eight design variables, aberration such as control or the spherical aberration of optimization system, coma, astigmatism, axial chromatic aberration, distortion, curvature of field parameter is also controlled focal length, for selected relative aperture and focal length, can obtain good balance, especially third-order aberration between the various aberrations; And the modification of improved Ke Ke lens combination, its cemented surface can be used to improve senior coma, astigmatism and oblique spherical aberration, described focus lens group 7 comprises first lens 13, second lens 14, the 3rd lens 15, the 4th lens 16, the 5th lens 17,3 set collars 18, first lens 13 and second lens 14 are glued together, and the 4th lens 16 and the 5th lens 17 are glued together.End at second sleeve, 5 inwalls has screw thread, the lateral wall of three set collars all has the screw thread that agrees with mutually with second sleeve, 5 inner threads, can screw in successively in second sleeve 13, lens are placed in second sleeve, 15 inner threaded ends, and clamp each lens fixing by set collar successively by shown in Figure 2.
Received by linear charge-coupled array CCD12 from the spectrum of focus lens group outgoing, make light intensity signal be converted into voltage signal, voltage signal is transferred to computing machine collection through data cable 9.The line array CCD (Aviiva SM2) that typical line array CCD parameter can be produced with reference to French Atmel company.Compare with traditional picture pick-up device, many-sided advantages such as line array CCD 15 has that spectral response is wide, good linearity, wide dynamic range, noise are low, highly sensitive, real-time Transmission and electric charge self-scanning have been widely used in fields such as remotely sensed image, satellite monitoring, machine vision at present.Driving signal cable 8 is used for driving signal to linear charge-coupled array CCD12 transmission.
The utility model also provides a kind of spectra collection method, and its step comprises:
Step 1, tested incident beam become the parallel spatial light of collimation through optical fiber 1, optical fiber collimator 2 successively;
Step 2 collimates parallel spatial light incident rib grid 3 the outgoing spectrum that chromatic dispersion forms takes place;
Step 3, outgoing spectrum incides focus lens group 7 and focuses on; Regulating relative position between second sleeve 5 and first sleeve 4 makes the reverse extending line of incident light spectrum of focus lens group 7 converge on the object space focal plane of this lens combination 7.
Step 4, linear charge-coupled array CCD12 receives the spectrum from the focus lens group outgoing, and light intensity signal is converted into voltage signal; The relative position of regulating between the 3rd sleeve 6 and second sleeve 5 makes each spectral components vernier focusing on the photosurface of linear charge-coupled array CCD12.
Step 5, voltage signal is transferred to computing machine collection through data line 9.
The utility model proposes a kind of compact spectrum harvester, the light splitting light path based on the rib grid that proposes, make tested incident beam generation chromatic dispersion, the spectrum that forms incides focus lens group and focuses on, received by line array CCD from the spectrum of focus lens group outgoing, make light intensity signal be converted into voltage signal, voltage signal is transferred to computing machine collection through data line.The compact spectrum acquisition method that proposes and the rib grid in the system, right by the prism of choosing suitable angle, make the process of incident ray through refraction, chromatic dispersion, birefringence, the chief ray of the spectral centroid wavelength light of outgoing and the chief ray of incident light are on the optical axis of focus lens group together, thereby realize the coaxial arrangement of each parts in this compact spectrum acquisition system.This compact spectrum harvester compact conformation, volume be little, be easy to carry, the acquisition method of compact spectrum harvester can be realized the accurate focusing to each spectral component, improves the performance of spectra collection system, improves stability of layout, eliminate interference of stray light, prolong device serviceable life.Each parts are coaxial to be placed in the sleeve of sealing, has avoided inner each parts because being subjected to external shock and disturbing the skew of contingent position or damage, and the light splitting light path is encapsulated in the airtight sleeve, has prevented the undesired signal of parasitic light incident formation.
By reference to the accompanying drawings embodiment of the present utility model has been done detailed description above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skills possess, can also under the prerequisite that does not break away from the utility model aim, make a variety of changes.
Claims (4)
1. compact spectrum harvester, it is characterized in that, comprise optical fiber (1), optical fiber collimator (2), rib grid (3), first sleeve (4), second sleeve (5), the 3rd sleeve (6), focus lens group (7), drive signal cable (8), data transmission cable (9), first fixed knob (10), second fixed knob (11), linear charge-coupled array CCD(12);
Wherein: described the 3rd sleeve is an end opening, the horizontal U-shaped sleeve of placing, and described linear charge-coupled array CCD is arranged on the base relative with its openend in the 3rd sleeve;
Described second sleeve is by forming with first substrate, second substrate that the inboard of two parallel sidewalls up and down of the 3rd sleeve is close to, is oppositely arranged respectively, one end of wherein said first substrate, second substrate stretches out the openend of the 3rd sleeve, the base of the other end of described first, second substrate and described the 3rd sleeve keeps certain distance, does not contact with described linear charge-coupled array CCD; First substrate is fixed by second fixed knob (11) and the openend of the upper side wall of the 3rd sleeve, inwall at described first substrate, second substrate is respectively arranged with protuberance (19), and described protuberance is divided into first cavity, second cavity with second sleeve;
Described first sleeve is by being positioned at the 3rd substrate, the tetrabasal that the inwall of first cavity is close to, is oppositely arranged and forming respectively with on first substrate, second substrate; Wherein the 3rd substrate is fixed by first fixed knob (10) and an end of first substrate;
Described optical fiber collimator is arranged in first sleeve end away from second cavity; Described rib grid are arranged on an end of close second cavity in first sleeve, keep certain distance with optical fiber collimator; Described focus lens group is arranged in second cavity; Described optical fiber is connected on the optical fiber collimator;
One end of one end of described driving signal cable (8), data transmission cable (9) passes the base and linear charge-coupled array CCD(12 of described the 3rd sleeve respectively) be connected, the other end of the other end of described driving signal cable (8), data transmission cable (9) is connected with outside host computer.
2. a kind of compact spectrum harvester according to claim 1, it is characterized in that, described focus lens group (7) adopts improved Ke Ke three-chip type lens combination, comprises first lens (13), second lens (14), the 3rd lens (15), the 4th lens (16), the 5th lens (17);
One side of wherein said first lens up and down two ends respectively with described first, second substrate on the protuberance clamping, one side of the opposite side of described first lens and second lens is glued together, the two ends of described the 3rd lens adopt the two ends up and down of a side of opposite side, the 4th lens of set collar and second lens to be connected respectively, one side of the opposite side of described the 4th lens and the 5th lens is glued together, and the two ends up and down of the opposite side of described the 5th lens adopt set collar to be connected with the inwall of first, second substrate respectively.
3. a kind of compact spectrum harvester according to claim 1 is characterized in that, described rib grid (3) are made up of first prism (20), grating substrate (21), grating (22), grating cover glass (23), second prism (24); Wherein, described grating substrate, grating cover glass are separately positioned on the both sides of grating, and described first prism (20) and grating substrate (21) are glued together, and described second prism (24) and grating cover glass (23) are glued together.
4. a kind of compact spectrum harvester according to claim 1 is characterized in that described linear charge-coupled array CCD(12) the Aviiva SM2 molded lines array charge-coupled device CCD that adopts French Atmel company to produce.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646960 CN203037349U (en) | 2012-11-30 | 2012-11-30 | Compact type spectrum acquisition device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646960 CN203037349U (en) | 2012-11-30 | 2012-11-30 | Compact type spectrum acquisition device |
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| CN203037349U true CN203037349U (en) | 2013-07-03 |
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| CN 201220646960 Expired - Lifetime CN203037349U (en) | 2012-11-30 | 2012-11-30 | Compact type spectrum acquisition device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017902A (en) * | 2012-11-30 | 2013-04-03 | 南京航空航天大学 | Compact spectrum collecting device and collecting method |
| CN105444887A (en) * | 2014-07-23 | 2016-03-30 | 联想(北京)有限公司 | Light detection method and electronic equipment |
| US9869589B2 (en) | 2014-07-23 | 2018-01-16 | Beijing Lenovo Software Ltd. | Electronic device and information processing method |
-
2012
- 2012-11-30 CN CN 201220646960 patent/CN203037349U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017902A (en) * | 2012-11-30 | 2013-04-03 | 南京航空航天大学 | Compact spectrum collecting device and collecting method |
| CN105444887A (en) * | 2014-07-23 | 2016-03-30 | 联想(北京)有限公司 | Light detection method and electronic equipment |
| CN105444887B (en) * | 2014-07-23 | 2017-11-28 | 联想(北京)有限公司 | A kind of light detection method and electronic equipment |
| US9869589B2 (en) | 2014-07-23 | 2018-01-16 | Beijing Lenovo Software Ltd. | Electronic device and information processing method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130703 Effective date of abandoning: 20141210 |
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| RGAV | Abandon patent right to avoid regrant |