CN205719922U - For measuring cuvette and the optical system thereof of scattering spectrum - Google Patents
For measuring cuvette and the optical system thereof of scattering spectrum Download PDFInfo
- Publication number
- CN205719922U CN205719922U CN201620491643.5U CN201620491643U CN205719922U CN 205719922 U CN205719922 U CN 205719922U CN 201620491643 U CN201620491643 U CN 201620491643U CN 205719922 U CN205719922 U CN 205719922U
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- China
- Prior art keywords
- cuvette
- arc
- shaped concave
- light
- scattering spectrum
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- Withdrawn - After Issue
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- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Optical Measuring Cells (AREA)
Abstract
A kind of cuvette for measuring scattering spectrum and optical system thereof, relate to a kind of cuvette and optical system thereof, wherein, cuvette includes cuvette body, the longitudinal section of cuvette body be oblique waist be the ladder structure of right angle of arc-shaped concave, each equal printing opacity of cuvette body, and incidence angle θ is more than 56 °, the perpendicular bisector h of arc-shaped concave and cuvette body intersects at the position of 3:7 in the vertical direction.Optical system includes that excitation source, slit I, above-mentioned cuvette, photoelectric detector, excitation source, slit I are arranged on the plane side of cuvette body, and photoelectric detector is arranged on the focal point of arc-shaped concave.This utility model utilizes total reflection principle, expands the interval between exciting light and scattered light, prevents exciting light to enter detector；Collect scattered light by arc-shaped concave simultaneously, improve and enter the luminous flux of detector and light utilization efficiency, can be used for the scattered light produced that is stimulated such as the fluorescence of fluid sample, phosphorescence or Raman light and measure.
Description
Technical field
This utility model relates to a kind of cuvette and optical system, a kind of colorimetric for measuring scattering spectrum
Ware and optical system thereof.
Background technology
Spectral measurement can use the forms such as transmission, reflection, diffusion, and fluorescence and Raman light etc. are excited by light and produce
Scattered light.Scattered light relative to the intensity of exciting light, fluorescence will low several orders of magnitude, Raman light is the lowest.Therefore dissipate in measurement
Penetrate light time spectrum, the intensity of the light that is excited need to be strengthened as far as possible, avoid exciting light to enter detector simultaneously as far as possible.In order to avoid swashing
Luminous impact, uses input path vertical with detection light path at present, and the angle detecting minimum from stimulated luminescence impact inspires
The scattered light come.Fig. 5 is the schematic diagram of the light path system of the fluorescence measurement being currently used for liquid, and what excitation source 2 sent excites
Light injects cuvette by after slit I 3, excites the liquid in cuvette to produce scattered fluorescence；Vertical direction at incident illumination
Arranging slit II 5, road scattered light S is by, after slit II 5, being irradiated to photoelectric detector 4, measure its signal after opto-electronic conversion.
The restriction of this design is, greater distance of cannot reentrying between detection light path and excitation light path, it is difficult to avoid exciting light to enter
Photoelectric detector；Additionally entering the very small part of the most overall scattered light of photoelectric detector 4, light utilization efficiency is low.
Summary of the invention
The technical problems to be solved in the utility model is: provide a kind of cuvette for measuring scattering spectrum and optics thereof
With solve that prior art exists, system, is difficult to avoid that exciting light enters photoelectric detector, weak point that light utilization efficiency is low.
The technical scheme solving above-mentioned technical problem is: a kind of cuvette for measuring scattering spectrum, including cuvette
Body, the longitudinal section of this cuvette body be oblique waist be the ladder structure of right angle of arc-shaped concave, each of cuvette body is the most saturating
Light.
Further technical scheme of the present utility model is: the incidence angle θ of described cuvette body is more than 56 °.
Further technical scheme of the present utility model is: described arc-shaped concave intersects with the perpendicular bisector h of cuvette body
Position in H1:H2=3:7 in the vertical direction.
Further technical scheme of the present utility model is: described cuvette body is by quartz glass or optical glass or height
Molecularly Imprinted Polymer is made.
Of the present utility model another solution is that a kind of optical system for measuring scattering spectrum, including setting successively
Putting the excitation source in light path, slit I, cuvette, photoelectric detector, described cuvette is described for measuring scattering
The cuvette of spectrum, described excitation source, slit I be arranged on the plane side of cuvette body, and photoelectric detector is arranged on
At focus O of arc-shaped concave.
Owing to using said structure, this utility model for measuring the cuvette of scattering spectrum and optical system thereof with existing
There is technology to compare, have the advantages that and excite the liquid in cuvette to produce scattered fluorescence；
1. exciting light can be avoided to enter photoelectric detector
Due to the longitudinal section of cuvette body of the present utility model be oblique waist be the ladder structure of right angle of arc-shaped concave, be i.e.
Change the original cuvette side in square into arc-shaped concave.During use, the exciting light that excitation source sends is by after slit I
The plane being perpendicular to cuvette body is injected, and through the intrinsic liquid of cuvette, projects on arc-shaped concave, controls arc recessed
The position in face so that incidence angle θ is more than a certain angle, in order to realizes the total reflection of incident laser light, makes incident laser light
Arc-shaped concave cannot be passed through, thus enter liquid once again, penetrate from other transmission planes of cuvette body.Simultaneously as this
The photoelectric detector of utility model is arranged on the focal point of arc-shaped concave, thus this photoelectric detector away from incident laser light and
Shoot laser light is arranged.Therefore, this utility model utilizes total reflection principle, between expanding between exciting light and scattered light
Every, it is to avoid exciting light enters photoelectric detector, it is ensured that the accuracy of testing result.
2. light utilization efficiency is high
Due to the longitudinal section of cuvette body of the present utility model be oblique waist be the ladder structure of right angle of arc-shaped concave, be i.e.
Change the original cuvette side in square into arc-shaped concave.During use, the intrinsic liquid of excitation cuvette produces
The scattered light that raw direction is different, these scattered lights pass through arc-shaped concave, due to the convergence effect of arc-shaped concave, can be by the biggest one
Light splitting converges at focus, plays the effect strengthening light efficiency, and therefore, photoelectric detector is placed on focal position by this utility model
Or guide-lighting to photoelectric detector by focus, substantially increase the luminous flux entering photoelectric detector, thus improve light and utilize
Rate.
The most applied widely
Cuvette of the present utility model can be used for the fluorescence of fluid sample, phosphorescence or Raman light etc. be stimulated produce scattering
The measurement of light, its scope of application is wider.
4. simple in construction, low cost, it is easy to popularization and application.
Below, in conjunction with the accompanying drawings and embodiments to this utility model for measuring cuvette and the optical system thereof of scattering spectrum
The technical characteristic of system is further described.
Accompanying drawing explanation
This utility model described in Fig. 1: embodiment one is used for measuring the structural representation of the cuvette of scattering spectrum,
The left view of Fig. 2: Fig. 1,
The top view of Fig. 3: Fig. 2,
This utility model described in Fig. 4: embodiment two is used for measuring the structural representation of the optical system of scattering spectrum,
Fig. 5: be currently used for the light path system structural representation of the fluorescence measurement of liquid.
In above-mentioned accompanying drawing, each label declaration is as follows:
1-for measuring the cuvette of scattering spectrum, 11-cuvette body, 111-arc-shaped concave,
2-excitation source, 3-slit I, 4-photoelectric detector, 5-slit II, the original cuvette of 6-,
The perpendicular bisector of h-cuvette body, the radius of R-arc-shaped concave, θ-angle of incidence, the focus of O-arc-shaped concave,
S-scatters light, IN-incident laser light, OUT-shoot laser light.
Detailed description of the invention
Embodiment one
A kind of cuvette 1 for measuring scattering spectrum, including cuvette body 11, the longitudinal section of this cuvette body 11
Being the ladder structure of right angle of arc-shaped concave 111 for oblique waist, the incidence angle θ of cuvette body 11 is 60 °, and incident illumination can be made in refraction
Rate is more than producing total reflection in the sample of 1.16.Described arc-shaped concave 111 intersects at edge with the perpendicular bisector h of cuvette body 11
The position of H1:H2=3:7 in vertical direction, for the cuvette of 10mm size, focus O of arc-shaped concave to arc-shaped concave away from
It is 89.14mm from (i.e. the radius R of arc-shaped concave).Incident exciting light is injected from the bottom center of cuvette, in distance colorimetric
It is totally reflected at the bottom surface 7mm of ware, the top edge injection from the upper right corner, for the refractive index sample less than 2, will not be by instead
Penetrate and stop.
Each equal printing opacity of this cuvette body, according to spectral wavelength requirement, cuvette body 11 is by quartz glass.
Embodiment two
A kind of optical system for measuring scattering spectrum, including the excitation source 2 being successively set in light path, slit I
3, cuvette, photoelectric detector 4, described cuvette is the cuvette 1 for measuring scattering spectrum described in embodiment one, should
The concrete structure of cuvette is as follows:
A kind of cuvette 1 for measuring scattering spectrum, including cuvette body 11, the longitudinal section of this cuvette body 11
Being the ladder structure of right angle of arc-shaped concave 111 for oblique waist, the incidence angle θ of cuvette body 11 is 60 °, and incident illumination can be made in refraction
Rate is more than producing total reflection in the sample of 1.16.Described arc-shaped concave 111 intersects at edge with the perpendicular bisector h of cuvette body 11
The position of H1:H2=3:7 in vertical direction, for the cuvette of 10mm size, focus O of arc-shaped concave to arc-shaped concave away from
It is 89.14mm from (i.e. the radius R of arc-shaped concave).Incident exciting light is injected from the bottom center of cuvette, in distance colorimetric
It is totally reflected at the bottom surface 7mm of ware, the top edge injection from the upper right corner, for the refractive index sample less than 2, will not be by instead
Penetrate and stop.Each equal printing opacity of this cuvette body, according to spectral wavelength requirement, cuvette body 1 is by quartz glass.
Described excitation source 2, slit I 3 are vertically installed in the subjacent of cuvette body 11, and photoelectric detector 4 sets
Put at focus O of arc-shaped concave.
The operation principle of the present embodiment two is as follows:
During use, the exciting light that excitation source sends is injected from the bottom surface being perpendicular to cuvette body by after slit I, wears
Cross the intrinsic liquid of cuvette, project on arc-shaped concave, control the position of arc-shaped concave so that incidence angle θ is more than a certain
Angle because the refractive index of most part liquid is more than 1.2, as long as so this angle more than 56 ° [arcsin(1/1.2)=
56.4 °], can be achieved with the total reflection of incident laser light, make incident laser light cannot pass through arc-shaped concave, thus enter once again
Enter liquid, penetrate from other transmission planes of cuvette body.Simultaneously as photoelectric detector of the present utility model is arranged on arc
The focal point of shape concave surface, thus this photoelectric detector is arranged away from incident laser light and shoot laser light, can avoid completely
Exciting light enters photoelectric detector, it is ensured that the accuracy of testing result.
On the other hand, the intrinsic liquid of excitation cuvette produces the scattered light that direction is different, these scattered lights
Through arc-shaped concave, due to the convergence effect of arc-shaped concave, a big chunk light can be converged at focus, play enhancing light efficiency
Effect, therefore, photoelectric detector is placed on focal position or guide-lighting to photoelectric detector by focus by this utility model, carries
The high luminous flux entering photoelectric detector, thus improve light utilization efficiency.
As a kind of conversion of the present embodiment one, two, described incidence angle θ can also increase or reduce, but is usually big
In 56 °.
As another conversion of the present embodiment one, two, described cuvette body 11 can also is that by optical glass or
High molecular polymer is made.
Claims (5)
1. the cuvette (1) being used for measuring scattering spectrum, including cuvette body (11), it is characterised in that: this cuvette
The longitudinal section of body (11) be oblique waist be the ladder structure of right angle of arc-shaped concave (111), each of cuvette body (11) is the most saturating
Light.
Cuvette for measuring scattering spectrum the most according to claim 1, it is characterised in that: described cuvette body
(11) incidence angle θ is more than 56 °.
Cuvette for measuring scattering spectrum the most according to claim 1, it is characterised in that: described arc-shaped concave
(111) the perpendicular bisector h with cuvette body (11) intersects at the position of H1:H2=3:7 in the vertical direction.
Cuvette for measuring scattering spectrum the most according to claim 1, it is characterised in that: described cuvette body
(11) it is made up of quartz glass or optical glass or high molecular polymer.
5. for measuring an optical system for scattering spectrum, including the excitation source (2) being successively set in light path, slit I
(3), cuvette, photoelectric detector (4), it is characterised in that: described cuvette is Claims 1-4 any claim institute
The cuvette (1) for measuring scattering spectrum stated, described excitation source (2), slit I (3) are arranged on cuvette body
(11) plane side, photoelectric detector (4) is arranged at focus O of arc-shaped concave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620491643.5U CN205719922U (en) | 2016-05-25 | 2016-05-25 | For measuring cuvette and the optical system thereof of scattering spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620491643.5U CN205719922U (en) | 2016-05-25 | 2016-05-25 | For measuring cuvette and the optical system thereof of scattering spectrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205719922U true CN205719922U (en) | 2016-11-23 |
Family
ID=57300555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620491643.5U Withdrawn - After Issue CN205719922U (en) | 2016-05-25 | 2016-05-25 | For measuring cuvette and the optical system thereof of scattering spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205719922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891114A (en) * | 2016-05-25 | 2016-08-24 | 广西科技大学 | Colorimetric dish for measuring scattered spectrum and optical system of colorimetric dish |
| CN109406402A (en) * | 2018-09-05 | 2019-03-01 | 浙江省海洋水产研究所 | A kind of general cuvette device of absorption fluorescence and measurement method |
-
2016
- 2016-05-25 CN CN201620491643.5U patent/CN205719922U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891114A (en) * | 2016-05-25 | 2016-08-24 | 广西科技大学 | Colorimetric dish for measuring scattered spectrum and optical system of colorimetric dish |
| CN105891114B (en) * | 2016-05-25 | 2019-03-29 | 广西科技大学 | For measuring the cuvette and its optical system of scattering spectrum |
| CN109406402A (en) * | 2018-09-05 | 2019-03-01 | 浙江省海洋水产研究所 | A kind of general cuvette device of absorption fluorescence and measurement method |
| CN109406402B (en) * | 2018-09-05 | 2020-12-11 | 浙江省海洋水产研究所 | Universal cuvette device for absorbing fluorescence and measurement method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20190329 |