CN103091307A - Photoelectric detection component and sample analyzer - Google Patents
Photoelectric detection component and sample analyzer Download PDFInfo
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- CN103091307A CN103091307A CN2011103355350A CN201110335535A CN103091307A CN 103091307 A CN103091307 A CN 103091307A CN 2011103355350 A CN2011103355350 A CN 2011103355350A CN 201110335535 A CN201110335535 A CN 201110335535A CN 103091307 A CN103091307 A CN 103091307A
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Abstract
The invention discloses a photoelectric detection assembly and a sample analyzer. The photoelectric detection assembly comprises a luminescence cylinder, a lens, a colorimetric pool, a light source mounting base, a light source and a receiver, the lens and the colorimetric pool are fixed in the luminescence cylinder, the light source mounting base and the light source are fixed at the rear end of the luminescence cylinder, the receiver is fixed at the front end of the luminescence cylinder, the light source mounting base has light source location holes extending backward, the inner walls of the light source location holes have location surfaces, the light source is filled into the light source location holes and is located to the location surfaces, and the location surfaces make the light source be positioned in the focus position of the lens and also makes the optical axis of the light source overlap with the primary optic axis of the lens. The profile of the light source is utilized to carry out assembling and location, and the accurate location of the light source is guaranteed through the location surfaces of the light source mounting base, so the consistency of the collimating effects of lights and the consistency of the intensities of lights transmitting the lens are guaranteed.
Description
Technical field
The invention relates to a kind of Photoelectric Detection assembly and sample analyser.
Background technology
In blood cell analyzer, the workflow that adopts colourimetry to measure the concentration of HGB (haemoglobin) is: divide blood quantitative after sucking blood sample, with quantitative reagent mixing reacting generating complex, then measure the concentration of complex solution by colourimetry, obtain the concentration value of HGB by conversion.
As shown in Figure 1, existing HGB Photoelectric Detection assembly comprises the fixedly fixing pcb board 28 of pcb board 22, LED luminotron 23, convex lens 24, convex lens fixed cover 25, receiver bearing 26, receiver 27 and receiver of colorimetric pool 29, lightening tube 20, screw 21, LED.Wherein, two legs of LED luminotron 23 are welded to LED fixedly on pcb board 22; With the LED that welds the LED luminotron fixedly two screws 21 of pcb board 22 use be fixed on lightening tube 20; Two legs of receiver 27 are welded to receiver fixedly on pcb board 28; The receiver that will weld receiver 27 with two screws more fixedly pcb board 28 is fixed on lightening tube 20.
The measuring principle of this Photoelectric Detection assembly is: the light that is sent by LED luminotron 23 is collimated into directional light by convex lens 24, then pass colorimetric pool 29, the absorbance of the complex solution after measurement haemolysis, then receiver 27 transforms by recording the photosignal of background liquid and sample liquid the concentration value that is converted into HGB.
But there are the following problems for this HGB Photoelectric Detection assembly:
The problems such as 1) welding of LED luminotron 23 and receiver 27 location is unreliable, height error easily occurs, and is eccentric and crooked;
2) LED fixedly is connected with screw 21 between pcb board 22 and lightening tube 20, receiver is fixedly also to be connected with screw between pcb board 28 and lightening tube 20, because screw is crossed interporal lacuna, causes rigging error large, need special-purpose stationary fixture when assembling simultaneously, operation is trouble;
3) not sealing of light path easily is subjected to the pollution of reagent and dust, affects measuring accuracy;
4) clearly indication of both positive and negative polarity when LED luminotron and receiver bonding wire.
Owing to there being the problems referred to above, so be difficult to guarantee light that the LED luminotron sends and the consistance of the collimation between convex lens and light intensity.
Summary of the invention
The objective of the invention is for the deficiencies in the prior art, provide a kind of and can guarantee light collimation same effect and the conforming light path detection components of light intensity and sample analyser.
for achieving the above object, the present invention has adopted following technical scheme: a kind of Photoelectric Detection assembly, comprise light source, lightening tube, lens, colorimetric pool, receiver and light source holder, it is inner that described lens and colorimetric pool are fixed in described lightening tube, described light source is fixed in the rear end of described lightening tube, described receiver is fixed in the front end of described lightening tube, described light source, lens, colorimetric pool and receiver distribute in turn, described light source holder is fixed in the rear end of described lightening tube, described light source holder has the light source pilot hole that extends from front to back, the hole inwall of described light source pilot hole has locating surface, pack into described light source pilot hole and be positioned described locating surface of described light source, described locating surface makes described light source be positioned at the focal position of described lens and the optical axis of described light source is overlapped with the primary optical axis of described lens.Lightening tube is pre-and post perforative structure.The light source pilot hole extends back from the front end face of light source holder.Light source such as LED luminotron, or other can be by the light source of collimated.
Further, the first locating surface and the second locating surface that distribute before and after described locating surface comprises, the front-end and back-end of described light source are positioned respectively described the first locating surface and the second locating surface, and the axis of described first and second locating surface all overlaps with described primary optical axis.First and second locating surface can be the continuous surface around light source; First and second locating surface also can comprise a plurality of compositions surface of separating setting, a plurality of compositions that this separation arranges are surperficial to distribute centered by the primary optical axis of convex lens, the front end of light source is positioned between a plurality of compositions surface that consists of the first locating surface, and the rear end of light source is positioned between a plurality of compositions surface that consists of the second locating surface.
Further, described Photoelectric Detection assembly also comprises the gland that is positioned at described light source rear, and described gland presses described light source the inside that is fixed on described light source holder.
Further, described first and second locating surface is the surface of revolution, described light source comprises main body and is positioned at the leg seat that is fixed with leg of described body rear, the outer surface of described main body is the surface of revolution, the front end of the outer surface of described main body coordinates with described the first locating surface, and the rear end of described outer surface coordinates with described the second locating surface.
Further, the main body of described light source is that front end is that the bulb rear end is the bullet shape of cone, and described the first locating surface is the conical surface, and described the second locating surface is the face of cylinder, described the first locating surface coordinates with described bulb, and described the second locating surface coordinates with the large end of described cone.
Further, described photoelectric subassembly also comprises the gland that is positioned at described light source rear, described locating surface comprises described the first locating surface, and described light source front end is positioned described the first locating surface, and described gland presses described light source the inside that is fixed on described light source holder.The first locating surface can be the continuous surface around light source, also can be by the surface composition that forms of a plurality of separation centered by the lens primary optical axis.
Further, described light source holder and described lightening tube clamping, be threaded or one-body molded.
Further, described light source holder has the both positive and negative polarity sign.
Further, described lightening tube entangles described light source holder, and described light source holder and described lightening tube are rotationally connected and can rotate between disengaged position and locked position, and when disengaged position, described light source holder breaks away from described lightening tube and is connected; When locked position, described light source holder is connected with described lightening tube locking.
Further, be provided with the spinner ear one of in described light source holder and lightening tube, another in described light source holder and lightening tube is provided with the spinner seat, and described spinner seat is provided with the elasticity button bit, and when disengaged position, described spinner ear and described spinner seat break away from; When locked position, described spinner ear screws in described spinner seat and is tightened by described button bit.In addition, light source holder and lightening tube also can be threaded.
Further, described Photoelectric Detection assembly also comprises the receiver holder, described receiver holder is fixed on the front end of described lightening tube, described receiver holder is provided with fitting recess towards described receiver one side, be provided with positioning convex one of in described fitting recess and receiver, another in described fitting recess and receiver is provided with locating notch, and described positioning convex snaps in described locating notch, and described receiver is fixed in described fitting recess.Fitting recess can have the positioning convex that is convexly equipped with and receiver has recessed locating notch, or fitting recess has recessed locating notch and receiver has the positioning convex of protrusion.
Further, described receiver holder has the both positive and negative polarity sign.
Further, be provided with cushion between described receiver and colorimetric pool.
Further, described convex lens are positioned at the inside of described lightening tube by the convex lens fixed cover, are provided with O-ring seal between described convex lens fixed cover and colorimetric pool.
Further, described Photoelectric Detection assembly also comprises the receiver holder, described receiver holder is fixed on the front end of described lightening tube, be provided with the Elastic buckle pin one of in described receiver holder and described lightening tube, another in described receiver holder and lightening tube is provided with snap seats, and described buckle pin utilizes elastic force and described snap seats fastening.
A kind of sample analyser comprises described Photoelectric Detection assembly.This sample analyser can be blood cell analyzer, as carries out the HGB Measurement and analysis.
The invention has the beneficial effects as follows: 1) utilize the profile of light source to carry out assembling and positioning, and guarantee the accurate location of light source by the locating surface of light source holder, and then the consistance of the light intensity of the consistance of the collimation effect of assurance light and scioptics.2) utilize the profile of receiver to carry out assembling and positioning, improved the accuracy of receiver assembling and positioning, also improved the centering of receiver and lightening tube.3) light source holder and lightening tube rotate to select to link and connect, and have improved the accuracy of assembling and positioning and the simplicity of operation.4) the receiver holder is connected with the lightening tube Elastic buckle, has improved the accuracy of assembling and positioning, has simplified assembly technology.
5) by O-ring seal being set between lens set collar and colorimetric pool and between colorimetric pool and receiver, cushion being set; can effectively prevent outside agent and contamination by dust light path; increase the seal protection to light path, improved stability and accuracy that light path detects.
Description of drawings
Fig. 1 is the cut-open view of existing HGB light path detection components;
Fig. 2 is the three-dimensional exploded view of present embodiment light path detection components;
Fig. 3 is the cut-open view of present embodiment light path detection components;
Fig. 4 is the light source of reflection present embodiment light path detection components and the structural representation of light source holder assembly relation;
Fig. 5 is the light source holder of reflection present embodiment light path detection components and the structural representation of lightening tube assembly relation;
Fig. 6 is the receiver of reflection present embodiment light path detection components and the receiver holder is unassembled when putting in place structural representation;
Fig. 7 is the structural representation of the leg polarity after the receiver of reflection present embodiment light path detection components assembles.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail below by embodiment.
To shown in Figure 7, present embodiment Photoelectric Detection assembly comprises colorimetric pool 2, lightening tube 3, light source holder 4, light source 6, convex lens 7 and receiver 12 as Fig. 2.This Photoelectric Detection assembly can be used for HGB and measure, when carrying out the HGB measurement, the light that light source 6 sends is collimated into directional light by convex lens 7, then pass colorimetric pool 2, the absorbance of the complex solution after measurement haemolysis, then receiver 12 transforms by measuring the photosignal of background liquid and sample liquid the concentration that is converted into HGB.Preferably, light source 6 is the LED luminotron.
Lightening tube 3 is pre-and post perforative structure, and colorimetric pool 2 and convex lens 7 are fixed on the inside of this lightening tube 3, and light source 6 and light source holder 4 are fixed on the rear end of lightening tube 3, and receiver 12 is fixed on the front end of lightening tube 3.Light source holder 4 has the light source pilot hole 47 that is backward extended by its front end face, the hole inwall of light source pilot hole 47 has locating surface, light source 6 inserts in this light source pilot hole 47 and the face that is positioned is located, make light source 6 be positioned at the focal position of convex lens 7, and the optical axis of light source 6 is overlapped with the primary optical axis of convex lens 7, and then guarantee the consistance of the collimation effect of light; And verticality, the concentricity of light source 6 all are improved, and can guarantee the consistance by the light intensity of convex lens 7.
The first locating surface 45 and the second locating surface 46 that distribute before and after locating surface can comprise, the front end of light source 6 is positioned at the first locating surface 45, the rear end of light source 6 is positioned at the second locating surface 46, and first and second locating surface 45,46 axis overlap with the primary optical axis of convex lens 7, have guaranteed the accuracy of light source front and back position by this first and second locating surface 45,46.This first and second locating surface can be the surface of revolution, corresponding, the outer surface of the light source 6 that coordinates with first and second locating surface also can be the surface of revolution.This first and second locating surface 45,46 can contact with light source 6 lines, and this contact position can be circle.The perhaps hole inwall of light source pilot hole 47 projection more than 3 that extends internally out, this projection can contact with the forward terminal of light source 6, forms the first locating surface 45, and namely the first locating surface 45 can consist of by separating a plurality of surfaces that form that arrange.During manufacturing, can make whole light source pilot hole 47 be rotary hole.It may occur to persons skilled in the art that, light source pilot hole 47 can be also square hole, or polygonal hole, as long as locating surface can be provided.
The leg seat 65 of light source has the plane trimming 63 for the location, and namely the leg seat can be D shape, corresponding, the light source holder can have D shape the 4th hole that coordinates with this leg seat.This plane trimming 63 can be parallel with the primary optical axis of lens 7.Determined the leg direction of light source 6 by this plane trimming 63, leg 61 near plane trimming 63 is negative pole, leg 62 away from plane trimming 63 is anodal, accordingly, at the edge of light source holder 4, can carve at close leg 61 places one "-" number sign 41, one "+" number sign 42 is carved at 62 places at close leg, to indicate accurate welding electric wire, reduce the error rate of wire welding in production run, enhance productivity.Light source holder 4 can also be provided with lead-in wire perforation 44, is used for the approximately electric wire of light source beam welding.
Light source holder 4 inserts the inside of lightening tubes 3, and this light source holder 4 guarantees both right alignmenies with lightening tube 3 shaft hole matchings, and light source holder 4 and lightening tube 3 are rotationally connected.Light source holder 4 can rotate between disengaged position and locked position by the relative luminous cylinder, and when disengaged position, light source holder 4 is connected with lightening tube and break away from is connected; When locked position, light source holder 4 is connected locking and is connected with lightening tube.
Concrete, the outside of lightening tube 3 open rearward end can be provided with two spinner seats 32, corresponding, the outer surface of light source holder 4 convexes with 43, two spinner seats 32 of two spinner ears all to have the breach that screws in for spinner ear 43 and has flexible button bit 31.When disengaged position, two spinner ears 43 lay respectively at the outside of two spinner seats 32; When needing locking, rotate light source holder 4, two spinner ears 43 screw in two spinner seats 32 from two breach respectively, in rotation process, spinner ear 43 forces button bit 31 to produce deformation and allows overwinding buckle ear 43, after rotateing in place, button bit 31 recovers deformation and spinner ear 43 is clamped in spinner seat 32, make the light source holder 4 can backward rotation and automatically get loose, guaranteed that light source holder 4 is connected the reliability that connects with lightening tube, and can realize removably connecting between light source holder 4 and lightening tube 3.Certainly, can be also that the light source holder arranges the spinner seat and lightening tube arranges the spinner ear.The quantity of spinner seat and spinner ear can be more than two, and its concrete quantity can design as requested.
It is to be threaded that the another kind of light source holder 4 and lightening tube 3 is rotationally connected mode, and namely light source holder 4 inserts lightening tube 3 inside and is threaded with lightening tube 3.
Light source holder 4 is to be convenient disassembly with being rotatably connected of lightening tube 3, is convenient for changing light source.In another embodiment, light source holder 4 can also be one-body molded with the rear end of lightening tube 3.
Convex lens 7 are fixed on the inside of lightening tube 3 by convex lens fixed cover 8, be provided with elastic seal ring 9 between this convex lens fixed cover 8 and colorimetric pool 2.
Cushion 11 and elastic seal ring 9 not only can compress receiver 12 and convex lens 7, make it be difficult for mobile, keep the collimation of light, can also play the effect of sealing light path, and when leakage appearred in colorimetric pool 2, liquid can not pollute light path yet.
Photoelectric measurement assembly of the present invention uses the light source holder to the light source effective location, has improved light source, and the particularly accurate positioning of LED luminotron has guaranteed the collimation of the light that lightening tube is exported and the consistance of light intensity; Use receiver holder has improved the accuracy of receiver assembling and positioning, has also improved the centering of receiver and lightening tube; Use cushion and O-ring seal have increased the seal protection of light path, have improved the Stability and veracity of testing result.
Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (16)
1. Photoelectric Detection assembly, comprise light source, lightening tube, lens, colorimetric pool and receiver, it is inner that described lens and colorimetric pool are fixed in described lightening tube, described light source is fixed in the rear end of described lightening tube, described receiver is fixed in the front end of described lightening tube, described light source, lens, colorimetric pool and receiver distribute in turn, it is characterized in that: also comprise the light source holder, described light source holder is fixed in the rear end of described lightening tube, described light source holder has the light source pilot hole that extends from front to back, the hole inwall of described light source pilot hole has locating surface, pack into described light source pilot hole and be positioned described locating surface of described light source, described locating surface makes described light source be positioned at the focal position of described lens and the optical axis of described light source is overlapped with the primary optical axis of described lens.
2. Photoelectric Detection assembly as claimed in claim 1, it is characterized in that: the first locating surface and the second locating surface that distribute before and after described locating surface comprises, the front-end and back-end of described light source are positioned respectively described the first locating surface and the second locating surface, and the axis of described first and second locating surface all overlaps with described primary optical axis.
3. Photoelectric Detection assembly as claimed in claim 1, it is characterized in that: also comprise the gland that is positioned at described light source rear, described gland presses described light source the inside that is fixed on described light source holder.
4. Photoelectric Detection assembly as claimed in claim 2, it is characterized in that: described first and second locating surface is the surface of revolution, described light source comprises main body and is positioned at the leg seat that is fixed with leg of described body rear, the outer surface of described main body is the surface of revolution, the front end of the outer surface of described main body coordinates with described the first locating surface, and the rear end of described outer surface coordinates with described the second locating surface.
5. Photoelectric Detection assembly as claimed in claim 4, it is characterized in that: the main body of described light source is that front end is that the bulb rear end is the bullet shape of cone, described the first locating surface is the conical surface, described the second locating surface is the face of cylinder, described the first locating surface coordinates with described bulb, and described the second locating surface coordinates with the large end of described cone.
6. Photoelectric Detection assembly as claimed in claim 1, it is characterized in that: also comprise the gland that is positioned at described light source rear, described locating surface comprises described the first locating surface, described light source is positioned described the first locating surface, and described gland presses described light source the inside that is fixed on described light source holder.
7. Photoelectric Detection assembly as claimed in claim 1 is characterized in that: described light source holder and described lightening tube clamping, be threaded or one-body molded.
8. Photoelectric Detection assembly as claimed in claim 1 is characterized in that: described light source holder has the both positive and negative polarity sign.
9. Photoelectric Detection assembly as claimed in claim 1, it is characterized in that: described lightening tube entangles described light source holder, described light source holder and described lightening tube are rotationally connected and can rotate between disengaged position and locked position, when disengaged position, described light source holder breaks away from described lightening tube and is connected; When locked position, described light source holder is connected with described lightening tube locking.
10. Photoelectric Detection assembly as claimed in claim 9, it is characterized in that: be provided with the spinner ear one of in described light source holder and lightening tube, another in described light source holder and lightening tube is provided with the spinner seat, described spinner seat is provided with the elasticity button bit, when disengaged position, described spinner ear and described spinner seat break away from; When locked position, described spinner ear screws in described spinner seat and is tightened by described button bit.
11. Photoelectric Detection assembly as claimed in claim 1, it is characterized in that: also comprise the receiver holder, described receiver holder is fixed on the front end of described lightening tube, described receiver holder is provided with fitting recess towards described receiver one side, be provided with positioning convex one of in described fitting recess and receiver, another in described fitting recess and receiver is provided with locating notch, and described positioning convex snaps in described locating notch, and described receiver is fixed in described fitting recess.
12. Photoelectric Detection assembly as claimed in claim 11 is characterized in that: described receiver holder has the both positive and negative polarity sign.
13. Photoelectric Detection assembly as claimed in claim 1 is characterized in that: be provided with cushion between described receiver and colorimetric pool.
14. Photoelectric Detection assembly as claimed in claim 1 is characterized in that: described lens are positioned at the inside of described lightening tube by the lens fixed cover, are provided with O-ring seal between described lens fixed cover and colorimetric pool.
15. Photoelectric Detection assembly as claimed in claim 1, it is characterized in that: also comprise the receiver holder, described receiver holder is fixed on the front end of described lightening tube, be provided with the Elastic buckle pin one of in described receiver holder and described lightening tube, another in described receiver holder and lightening tube is provided with snap seats, and described buckle pin utilizes elastic force and described snap seats fastening.
16. a sample analyser is characterized in that: comprise the described Photoelectric Detection assembly of any one in claim 1-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110335535.0A CN103091307B (en) | 2011-10-31 | Photoelectric detection component and sample analyser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110335535.0A CN103091307B (en) | 2011-10-31 | Photoelectric detection component and sample analyser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103091307A true CN103091307A (en) | 2013-05-08 |
| CN103091307B CN103091307B (en) | 2016-12-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760120A (en) * | 2014-01-17 | 2014-04-30 | 深圳市理邦精密仪器股份有限公司 | Diode fixing device and hemocyte analyzer using same |
| CN110779880A (en) * | 2019-10-18 | 2020-02-11 | 金川集团股份有限公司 | Photoelectric receiving device for chromaticity measurement |
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| US4886966A (en) * | 1988-01-07 | 1989-12-12 | Kabushiki Kaisha Toshiba | Apparatus for introducing samples into an inductively coupled, plasma source mass spectrometer |
| CN2354132Y (en) * | 1998-12-11 | 1999-12-15 | 康保华 | Integrated optical colorimeter |
| GB2352511A (en) * | 1999-07-23 | 2001-01-31 | Univ Bath | Colorimeter having an LED light source |
| CN1924556A (en) * | 2005-08-29 | 2007-03-07 | 深圳雷杜生命科学股份有限公司 | Optical path system for clinical test analyzer |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4886966A (en) * | 1988-01-07 | 1989-12-12 | Kabushiki Kaisha Toshiba | Apparatus for introducing samples into an inductively coupled, plasma source mass spectrometer |
| CN2354132Y (en) * | 1998-12-11 | 1999-12-15 | 康保华 | Integrated optical colorimeter |
| GB2352511A (en) * | 1999-07-23 | 2001-01-31 | Univ Bath | Colorimeter having an LED light source |
| CN1924556A (en) * | 2005-08-29 | 2007-03-07 | 深圳雷杜生命科学股份有限公司 | Optical path system for clinical test analyzer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760120A (en) * | 2014-01-17 | 2014-04-30 | 深圳市理邦精密仪器股份有限公司 | Diode fixing device and hemocyte analyzer using same |
| CN103760120B (en) * | 2014-01-17 | 2016-06-01 | 深圳市理邦精密仪器股份有限公司 | The stationary installation of a kind of diode and apply the cellanalyzer of this stationary installation |
| CN110779880A (en) * | 2019-10-18 | 2020-02-11 | 金川集团股份有限公司 | Photoelectric receiving device for chromaticity measurement |
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Application publication date: 20130508 Assignee: Shenzhen Mindray Animal Medical Technology Co.,Ltd. Assignor: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS Co.,Ltd. Contract record no.: X2022440020009 Denomination of invention: Photoelectric detection components and sample analyzers Granted publication date: 20161214 License type: Common License Record date: 20220804 |