CN204514799U - Spectrophotometer micro-example pick-up unit - Google Patents
Spectrophotometer micro-example pick-up unit Download PDFInfo
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- CN204514799U CN204514799U CN201520102475.1U CN201520102475U CN204514799U CN 204514799 U CN204514799 U CN 204514799U CN 201520102475 U CN201520102475 U CN 201520102475U CN 204514799 U CN204514799 U CN 204514799U
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- fiber laser
- laser arrays
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- micro
- slide block
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Abstract
The utility model discloses a kind of spectrophotometer micro-example pick-up unit, it is characterized in that: on sample detection pedestal, be provided with the fiber laser arrays head that two levels are relative, one of them is light projector fiber laser arrays head, can be connected with light source by optical fiber, another is light fiber laser arrays head, can be connected with Systems for optical inspection by optical fiber, the gap between the front end face of described two fiber laser arrays heads forms the micro-example pond of accommodating sample solution.The sample cell light path of spectrophotometer micro-example pick-up unit of the present utility model is accurate and stable, and the accuracy of measurement result and repeatability are very good, and simple structure, with low cost.
Description
Technical field
The utility model relates generally to a kind of optic analytical instrument, particularly a kind of spectrophotometer micro-example pick-up unit.
Background technology
Use spectrophotometric determination nucleic acid, the concentration of protein, purity to be classical method, can be described as each Biochemistry Experiment room indispensable.But a problem of puzzlement is in the past, uses cuvette very large as sample cell consumption sample amount, be very headache for precious sample, if dilute sample, can insufficient sensitivity be caused again, and cleaning cuvette is more difficult.And micro-spectrophotometer only needs the sample volume of 0.5 to 2 microlitres, greatly reduce sample consumption, also reduce because detect light path and decrease the demand of gradient dilution is carried out to enriched sample such as nucleic acid or protein, very convenient.
One of critical component of micro-spectrophotometer is exactly micro-example pond, and the key index in micro-example pond is light path, and the accuracy of light path and stability directly affect accuracy and the repeatability of testing result.Having now a kind of is known micro-spectrophotometer, it utilizes surface tension of liquid, fluid column is formed as micro-example pond between two vertical up and down fiber laser arrays end surfaces, set the distance of upper and lower fiber laser arrays end surface by adjustment stop screw, namely measure required micro-example pond light path.Fiber laser arrays head above this micro-spectrophotometer all needs when dripping sample and wipe samples to lift, then put down again again, limiting component can be made to wear and tear because upper optical fiber detection head lifts continually and puts down, there is error in light path, the axle center of two fiber laser arrays heads also can be made simultaneously to misplace, cause light loss.These situations all can cause measuring accuracy to reduce, and repeatability is bad.
Summary of the invention
The purpose of this utility model overcomes above-mentioned the deficiencies in the prior art, provides easier, the required sample size of a kind of operation small, and measurement accuracy and repeatability better spectrophotometer micro-example pick-up unit.
The technical solution adopted in the utility model is: on sample detection pedestal, be provided with the fiber laser arrays head that two levels are relative, one of them is light projector fiber laser arrays head, can be connected with light source by optical fiber, another is light fiber laser arrays head, can be connected with Systems for optical inspection by optical fiber, the gap between the front end face of described two fiber laser arrays heads forms the micro-example pond of accommodating sample solution.
Further, the head of described two fiber laser arrays heads is the stepped appearance or taper configurations that point diameter little rear end diameter is large.
Further, described sample detection pedestal is provided with line slideway, described guide rail is provided with slide block, the stop means that the distance of described slide block movement is provided with by line slideway two ends limits, one of them of described two fiber laser arrays heads is placed on slide block, and described stop means can set minimum clearance between described two fiber laser arrays head front end faces and maximal clearance thus.
Further, between described slide block and fixing fiber laser arrays head, be provided with spring, described spring can make the primary clearance between described two fiber laser arrays head front end faces be the maximal clearance set; Sample detection pedestal is provided with solenoid valve or the Linear motor device of the fiber laser arrays head direction movement that described slide block is fixed to another, and the gap between two fiber laser arrays head front end faces can be made to reach the minimum clearance of setting.
The utility model by the fiber laser arrays head of two levels front end face between gap as the sample cell of accommodating sample solution, also be utilize surface tension of liquid to stablize to keep sample solution, but do not need moving fiber detection head when dripping sample and wipe samples, can reduce because associated components weares and teares the various errors caused, and operation is simpler.The maximal clearance that described sample cell is set by stop means and minimum clearance define the different regulation light path of two length, in spectrophotometry, measure with the sample cell that light path is shorter when the concentration of testing sample is higher, measure with the sample cell that light path is longer when the concentration of testing sample is lower, the precision of measurement can be improved thus.The sample cell light path of spectrophotometer micro-example pick-up unit of the present utility model is accurate and stable, and the accuracy of measurement result and repeatability are very good, and simple structure, with low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of this spectrophotometer micro-example pick-up unit;
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, sample detection pedestal 1 is provided with the fiber laser arrays head that two levels are relative, one of them is light projector fiber laser arrays head 3, can be connected with light source by optical fiber 2, another is light fiber laser arrays head 4, can be connected with Systems for optical inspection by optical fiber 5, the gap between the front end face of described two fiber laser arrays heads 3,4 forms the micro-example pond of accommodating sample solution S.For the ease of the sample solution S on two the fiber laser arrays head front end faces of the wiping when not spacing out, and ensureing that fiber laser arrays cephalopodium is enough firmly indeformable, the head of described two fiber laser arrays heads 3,4 makes the large stepped appearance of point diameter little rear end diameter or taper.
Described sample detection pedestal 1 is provided with line slideway 8, described guide rail 8 is provided with slide block 9, the stop means 7,11 that the distance of described slide block 9 movement is provided with by line slideway 8 two ends limits, described light fiber laser arrays head 4 is placed on slide block 9, and described stop means 7,11 can set minimum clearance between two fiber laser arrays heads 3,4 front end face and maximal clearance thus.
Between slide block 9 and fixing light projector fiber laser arrays head 3, be provided with spring 10, spring 10 can make the primary clearance between two fiber laser arrays heads 3,4 front end face be the maximal clearance set; Sample detection pedestal 1 is provided with and described slide block 9 can be made to the solenoid valve of fixing light projector fiber laser arrays head 3 direction movement or Linear motor device 6, with the minimum clearance making the gap between two fiber laser arrays heads 3,4 front end face reach setting.Namely the motion of spectrophotometric control system to described solenoid valve or Linear motor device 6 controls, and described micro-example pond can be made to change between two different regulation light paths between maximal clearance and minimum clearance.
Design of the present utility model is as follows:
The optical fiber 2 of this spectrophotometer micro-example pick-up unit is connected with light source and Systems for optical inspection respectively with optical fiber 5, sample solution is instilled described two fiber laser arrays heads 3, fluid column is formed in the micro-example pond that gap between the front end face of 4 is formed, the light that light source sends after light projector fiber laser arrays head through sample solution fluid column, Systems for optical inspection is entered again through light fiber laser arrays head 4, Systems for optical inspection then carries out the detection of second light path again after carrying out the detection of a light path to sample solution, then data processing is carried out, finally determine the accurate measurements of sample solution.After measurement, directly carry out wiping with the front end that two fiber laser arrays heads 3,4 clamped by cleansing tissue, drop can be wiped clean.
Claims (1)
1. spectrophotometer micro-example pick-up unit, it is characterized in that: on sample detection pedestal, be provided with the fiber laser arrays head that two levels are relative, one of them is light projector fiber laser arrays head, can be connected with light source by optical fiber, another is light fiber laser arrays head, can be connected with Systems for optical inspection by optical fiber, the gap between the front end face of described two fiber laser arrays heads forms the micro-example pond of accommodating sample solution; The head of described two fiber laser arrays heads is stepped appearance or taper configurations that point diameter little rear end diameter is large; Described sample detection pedestal is provided with line slideway, described guide rail is provided with slide block, the stop means that the distance of described slide block movement is provided with by line slideway two ends limits, one of them of described two fiber laser arrays heads is placed on slide block, and described stop means can set minimum clearance between described two fiber laser arrays head front end faces and maximal clearance thus; Between described slide block and fixing fiber laser arrays head, be provided with spring, described spring can make the primary clearance between described two fiber laser arrays head front end faces be the maximal clearance set; Sample detection pedestal is provided with solenoid valve or the Linear motor device of the fiber laser arrays head direction movement that described slide block is fixed to another, and the gap between two fiber laser arrays head front end faces can be made to reach the minimum clearance of setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102475.1U CN204514799U (en) | 2015-02-10 | 2015-02-10 | Spectrophotometer micro-example pick-up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520102475.1U CN204514799U (en) | 2015-02-10 | 2015-02-10 | Spectrophotometer micro-example pick-up unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204514799U true CN204514799U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520102475.1U Expired - Fee Related CN204514799U (en) | 2015-02-10 | 2015-02-10 | Spectrophotometer micro-example pick-up unit |
Country Status (1)
| Country | Link |
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| CN (1) | CN204514799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024868A1 (en) * | 2021-08-24 | 2023-03-02 | 左渡海 | Optical measurement device |
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2015
- 2015-02-10 CN CN201520102475.1U patent/CN204514799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023024868A1 (en) * | 2021-08-24 | 2023-03-02 | 左渡海 | Optical measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 Termination date: 20160210 |