CN106885773B - For analyzing the optical system of medium - Google Patents
For analyzing the optical system of medium Download PDFInfo
- Publication number
- CN106885773B CN106885773B CN201610857398.XA CN201610857398A CN106885773B CN 106885773 B CN106885773 B CN 106885773B CN 201610857398 A CN201610857398 A CN 201610857398A CN 106885773 B CN106885773 B CN 106885773B
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- optical system
- light beam
- medium
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims description 23
- 238000005259 measurement Methods 0.000 claims description 11
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000005375 photometry Methods 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0229—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using masks, aperture plates, spatial light modulators or spatial filters, e.g. reflective filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/42—Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/063—Illuminating optical parts
Abstract
The present invention relates to a kind of for analyzing the optical system of medium, optical system (1) include for being emitted through the light source of the light beam of medium (2) (4) (3), the receiver (5) for receiving light beam (4), at least one is for the first diaphragm (6) of the light beam (4) of limiting light source (3), at least one lens (7) for being used at least one first diaphragm (6) being imaged on receiver (5), at least one second diaphragm (8) between at least one lens (7) and medium (2).
Description
Technical field
The present invention relates to a kind of for analyzing the optical system of medium.
Background technique
In order to analyze medium, especially liquid in technique measuring technique, usually using autoanalyzer.Measurement parameters
Determination is realized in mechanism frequently by optical such as photometric or spectrum analysis measurement.
Light emitting diode is the light source for being widely used in optical measurement.If measuring route is relatively long, need to limit
The fixed ray boundling from light beam.Simplest solution is the ray boundling from collimated light beam.But occur herein
Different problems.On the one hand, in the case where the diameter very little of ray boundling, as it is generally occurred in autoanalyzer
Like that, interference can be regarded as, light source is not perfect point light source.Light emitting diode is for example comprising with limited extension size
LED chip.Therefore, light emitting diode, which cannot be simply placed into, generates parallel ray boundling in the focus of lens.Separately
On the one hand, in the case where the diameter very little of ray boundling, the lenslet with small focal length is necessary.This lens are difficult school
It is quasi-.In addition, LED chip must be centrally disposed on optical axis for correct optical orientation.This is due to component tolerance and equipment
Tolerance in the process is unable to be guaranteed and needs subsequent calibration.
Summary of the invention
The task that the present invention is based on is to illustrate a kind of for analyzing the optical system of medium, and light source can be not necessarily to school
It is assembled in the case where standard.
The theme of the task according to the present invention through the invention solves.Subject of the present invention is the optics for analyzing medium
System comprising the light source of the light beam of medium, the receiver for receiving light beam, at least one is for limiting for being emitted through
First diaphragm of the light beam of light source, at least one is used for the lens, at least at least one first stop imagery to receiver
One the second diaphragm between at least one lens and medium.
Light source can be assembled without calibration within the system, this is because ray geometry passes through first
The position of diaphragm and lens limits, specifically, independent of the light source position for having tolerance.
According to a favourable improvement scheme, optical system determines specification as follows, that is, makes at least one second diaphragm
Diameter be equivalent to the image size of the first diaphragm on the receiver.
According to an Advantageous variants scheme, at least one first diaphragm is designed to for light source on the face in face of light source
Light beam at least partly reflected, wherein detector is arranged for monitoring by the reflection of at least one first diaphragm
Light beam.
Task of the invention is equally by including that the spectrometer of optical system according to the present invention solves.
Task of the invention is equally solved by the analysis instrument for determining the measurement parameters of liquid sample comprising:
Measuring chamber,
At least one liquid container, it includes treatment liquid, especially one or more reagents, for handling liquid-like
Product,
Technology device comprising transport and distribution mechanism, the transport and distribution mechanism will be for that will come from sample collection
The liquid sample of unit and treatment liquid transport from liquid container and with being given in measuring chamber,
Measure collector, especially photometric measurement collector comprising optical system according to the present invention, for providing
At least one to include the relevant measurement of measurement parameters of the liquid sample handled using treatment liquid in measuring chamber
Signal.
The medium that liquid sample is mentioned before corresponding in this design scheme of the invention reaches receiver in light beam
Before, light beam is projecting after diaphragm across the medium.
Analysis instrument may include electric data processing facility, the measured values of measurement parameters by means of optical system reception
The measuring signal that device provides is known.Furthermore data processing equipment can be designed to control analysis instrument, especially work
Skill technique device, for obtaining measured value.
Detailed description of the invention
The present invention is elaborated by attached drawing.Wherein:
Fig. 1 shows the schematic diagram of optical system.
Specific embodiment
Fig. 1 shows the schematic diagram of optical system 1.Optical system 1 includes being designed as 3 He of light source for being used to emit light beam 4 of LED
First diaphragm 6 of the light beam 4 for limiting light source 3.Lens 7 generate the imaging of the first diaphragm 6, wherein the second diaphragm 8 limits
The light beam 4 of mirror.Light beam crosses medium 2 and reaches receiver 5.Optical system generates the first diaphragm by lens 7 on receiver 5
6 imaging.
Optical system 1 determines specification as follows, that is, so that the diameter of the second diaphragm 8 is equivalent to the first diaphragm 6 and is receiving
Imaging size on device 5.By the diameter and selected image scale of the first diaphragm 6, it can determine that ray boundling is being surveyed
Measure the diameter at path termination.Therefore, the diameter and the second diaphragm 8 of image of the light beam 4 by the first diaphragm 6 on receiver 5
Diameter the two diameters in biggish that diameter limitation.Preferably, the diameter and the second diaphragm of the image of the first diaphragm 6
8 diameter equally selects.
First diaphragm 6 is designed to reflect in a manner of irreflexive for the light beam 4 of light source 3 on the face in face of light source 3,
To which shielded light beam is returned in a manner of irreflexive.Diffusing reflection provides a kind of average mode (Mittelung), to make
The slight movement for obtaining component (such as since temperature change causes), which will not generate, to be seriously affected.Detector 9 is arranged for
Monitor the light beam 4 reflected by least one first diaphragm 6.Detector 9 is photodiode.
Spacer element between optical component provides correct spacing.These components (the first diaphragm 6, spacer element, thoroughly
Mirror 7, the second diaphragm 8) it can particularly simple be assembled by the difference of design with necessary closed tolerance, without calibration.
If imaging scale ruler is chosen to slightly larger, the lens with bigger focal length also can be used.It utilizes
Bigger rating of machine and bigger focal length, this lens are more insensitive to build-up tolerance.
Analysis measurement parameters, such as ion concentration are known by measuring signal.Liquid 2 is usually the survey included in analysis instrument
Measure the sample liquids in room (vessel).
Reference signs list
1 optical system
2 media
3 light sources
4 light beams
5 receivers
6 first diaphragms
7 lens
8 second diaphragms
9 detectors
Claims (6)
1. one kind includes: for analyzing the optical system (1) of medium (2), the optical system
For being emitted through the light source (3) of the light beam (4) of the medium (2),
For receiving the receiver (5) of the light beam (4),
For limiting at least one first diaphragm (6) of the light beam (4) of the light source (3),
At least one described first diaphragm (6) is imaged at least one lens (7) on the receiver (5),
At least one second diaphragm (8) between at least one described lens (7) and the medium (2).
2. optical system according to claim 1, wherein the optical system determines specification as follows, that is, makes institute
The diameter for stating at least one the second diaphragm (8) is equivalent to image size of first diaphragm (6) on the receiver (5).
3. optical system according to claim 1 or 2, wherein at least one described first diaphragm (6) is facing the light
It is designed at least partly be reflected for the light beam (4) of the light source (3) on the face in source (3), and wherein, is provided with
Detector (9), for monitoring the light beam reflected by least one described first diaphragm (6).
4. spectrometer, the spectrometer includes optical system according to any one of claim 1 to 3 (1).
5. the analysis instrument of the measurement parameters for determining liquid sample, the analysis instrument includes according to claim 1 in 3
Described in any item optical systems, the analyzer further include:
Measuring chamber,
At least one liquid container, at least one described liquid container includes treatment liquid, for handling the liquid sample,
Technology device, the technology device include transport and distribution mechanism, and the transport and distribution mechanism are used for will
Liquid sample from sample collection unit and the transport of the treatment liquid from the liquid container and with being given to the measuring chamber
In；
Measure collector, for provide at least one with include it is in the measuring chamber, using the treatment liquid at
The relevant measuring signal of the measurement parameters of the liquid sample of reason.
6. analysis instrument according to claim 5, wherein the treatment liquid is one or more reagents, and/or
Wherein, the measurement collector is photometric measurement collector.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015116386.1 | 2015-09-28 | ||
| DE102015116386.1A DE102015116386A1 (en) | 2015-09-28 | 2015-09-28 | Optical system for analyzing a medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106885773A CN106885773A (en) | 2017-06-23 |
| CN106885773B true CN106885773B (en) | 2019-11-12 |
Family
ID=58281513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610857398.XA Active CN106885773B (en) | 2015-09-28 | 2016-09-27 | For analyzing the optical system of medium |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106885773B (en) |
| DE (1) | DE102015116386A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017115660A1 (en) * | 2017-07-12 | 2019-01-17 | Endress+Hauser Conducta Gmbh+Co. Kg | Optical system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0849575A3 (en) * | 1996-12-20 | 2000-04-19 | The Perkin-Elmer Corporation | Standardizing a spectrometric instrument |
| US6024920A (en) | 1998-04-21 | 2000-02-15 | Bio-Rad Laboratories, Inc. | Microplate scanning read head |
| DE10022054B4 (en) | 2000-05-06 | 2006-05-24 | Leuze Electronic Gmbh & Co Kg | Optical distance sensor |
| US7262844B2 (en) | 2005-01-13 | 2007-08-28 | The Curators Of The University Of Missouri | Ultrasensitive spectrophotometer |
| EP2466292B1 (en) | 2010-10-29 | 2017-12-13 | F. Hoffmann-La Roche AG | System for performing scattering and absorbance assays |
-
2015
- 2015-09-28 DE DE102015116386.1A patent/DE102015116386A1/en active Pending
-
2016
- 2016-09-27 CN CN201610857398.XA patent/CN106885773B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106885773A (en) | 2017-06-23 |
| DE102015116386A1 (en) | 2017-03-30 |
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