CN102890058B - Wavelength conversion mechanism of multi-wavelength polarimeter - Google Patents
Wavelength conversion mechanism of multi-wavelength polarimeter Download PDFInfo
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- CN102890058B CN102890058B CN201210347685.8A CN201210347685A CN102890058B CN 102890058 B CN102890058 B CN 102890058B CN 201210347685 A CN201210347685 A CN 201210347685A CN 102890058 B CN102890058 B CN 102890058B
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Abstract
The invention discloses a wavelength conversion mechanism of a multi-wavelength polarimeter. The wavelength conversion mechanism of the multi-wavelength polarimeter is characterized by comprising a bottom plate (1), wherein a bracket (2) is arranged on the bottom plate (1); a stepping motor (3) is arranged on the bracket (2); a rotary light filter seat (4) is arranged on an output shaft of the stepping motor (3); at least one installation hole (401) is uniformly distributed in the rotary light filter seat (4) by taking the output shaft of the stepping motor (3) as the center; a light filter component (5) is arranged in the installation hole (401); and the rotary light filter seat (4) can rotate by taking the output shaft of the stepping motor (3) as the center. By adoption of the wavelength conversion mechanism of the multi-wavelength polarimeter, different light filters can be selected to test various samples under different wavelengths, and various samples can be measured on rotation tester equipment. The wavelength conversion mechanism of the multi-wavelength polarimeter is simple in overall structure, wide in application range and low in cost.
Description
Technical field
The present invention relates to polarimeter, specifically just relate to a kind of mechanism that can carry out the conversion of Multi-wavelength optical rotatory instrument wavelength.
Background technology
Polarimeter is the instrument of measuring material optical activity, by the measurement to sample optical activity, and concentration, content and purity etc. that can Analysis deterrmination material.Be widely used in the commercial production such as pharmacy, medicine inspection, sugaring, food, spices, monosodium glutamate and chemical industry, oil, scientific research, teaching department, control for assay or procedure quality.
Only have in the market single wavelength optical rotatory testing instrument, this tester can only, with single wavelength sodium vapor lamp etc. as light source, mainly rely on people's naked eyes or judge whether delustring by Automatic Measurement Technique; Error is larger, insensitive; Along with industrial expansion, increasing industry need detect their product separately with polarimeter.Testing sample is more, and required light source is not only monochromatic sodium lamp, also need to be equipped with according to the testing sample of various kinds the light source of various wavelength, on market or not, according to testing sample, need to purchase a Chinese polarimeter, as Chinese patent CN2738242Y discloses a kind of Multi-wavelength optical rotatory testing instrument, by light source, collimation footpath, reference cell, chopper, sample frame and receiver are arranged in the interior same levelling bench of casing, prejudice device and the polarizer are arranged on the left and right sides of sample frame, three's optical axis is on same horizontal line, this Multi-wavelength optical rotatory instrument just discloses the light source of two kinds of wavelength in fact, still can not meet the requirement of existing multi-wavelength quantity.
Summary of the invention
The object of the invention is the narrow shortcoming of measurement range that can realize for existing polarimeter, the throw-over gear of a kind of Multi-wavelength optical rotatory instrument wavelength is provided, by throw-over gear, select different optical filters to realize the test job of several samples under different wave length, meet the measurement that completes several samples on an optical rotatory testing instrument equipment.
Technical scheme
In order to implement above-mentioned technical purpose.The present invention designs the throw-over gear of a kind of Multi-wavelength optical rotatory instrument wavelength, it is characterized in that: it comprises base plate, support is installed on base plate, stepper motor is housed on support, rotating filtering bar is housed on stepper motor output shaft, on rotating filtering bar, centered by stepper motor output shaft, be at least uniform-distribution with a mounting hole, optical filter box is housed in mounting hole, control step motor can make optical filter seat rotate centered by motor output shaft, the optical filter of required wavelength is selected into light path, reach the result that wavelength is selected.
Described optical filter box comprises optical filter spheric seat, and optical filter spheric seat is contained in mounting hole bottom, and optical filter is contained in optical filter spheric seat, and trim ring is tightly against optical filter spheric seat in the mounting hole of rotating filtering bar by elasticity saddle type circle;
Light gate upright is also housed on described base plate, light hurdle seat is fixedly housed on light gate upright, light hurdle extend neck is through light hurdle seat, in light hurdle extend neck right-hand member nozzle, screw in smallcolumn diaphragm, left end nozzle is close to rotating filtering bar mounting hole, rotating filtering bar mounting hole and light hurdle extend neck center superposition, light hurdle extend neck right-hand member nozzle is equipped with shading sleeve outward.
Photomultiplier transit pipe holder is also housed on described base plate, on photomultiplier transit pipe holder, photomultiplier is housed, photomultiplier is accepted face and is aimed at light path.
Test-tube stent is also housed on described base plate, receiving objective support is fixedly equipped with in test-tube stent upper end, in receiving objective support endoporus, receiving objective seat is housed, accepting object lens circle is pressed in the ladder endoporus of receiver microscope base right side, receiving objective packs receiver microscope base inner close fitting into and accepts object lens circle left surface, polaroid is pressed in the shoulder hole of receiver microscope base left side, is positioned at receiving objective left side.
Further, photoelectric interrupter seat is also housed on described base plate, on photoelectric interrupter seat, photoelectric interrupter is housed, on rotating filtering bar, spacer is housed, spacer is corresponding with photoelectric interrupter.
Further, on described receiving objective support, limit spring sheet is housed, it is recessed that limit spring sheet is positioned at mounting hole corresponding position limited location at rotating filtering bar.
Further, described spacer is fixed on rotating filtering bar with adjusting holding screw.
Further, described mounting hole has 8, is circle-shaped and is uniformly distributed centered by stepper motor output shaft.
Beneficial effect
The present invention utilizes throw-over gear to realize the test job that the different optical filter of selection is realized several samples under different wave length, meets the measurement that completes several samples on an optical rotatory testing instrument equipment.Total is simple in structure, applied widely, with low cost.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is left views of the present invention.
Accompanying drawing 3 is rotating filtering bar structural representations of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
As shown in accompanying drawing 1,2 and 3, the throw-over gear of a kind of Multi-wavelength optical rotatory instrument wavelength, it comprises base plate 1, support 2 is installed on base plate 1, stepper motor 3 is housed on support 2, on stepper motor 3 output shafts, rotating filtering bar 4 is housed, on rotating filtering bar 4, centered by stepper motor 3 output shafts, be at least uniform-distribution with a mounting hole 401, optical filter box 5 is housed in mounting hole 401, and rotating filtering bar 4 can rotate centered by stepper motor 3 output shafts;
Described optical filter box 5 comprises optical filter spheric seat 501, optical filter spheric seat 501 is contained in mounting hole 401 bottoms, optical filter 502 is contained in optical filter spheric seat 501, and trim ring 503 is tightly against optical filter spheric seat 501 in the mounting hole 401 of rotating filtering bar 4 by elasticity saddle type circle 504;
On described base plate 1, light gate upright 6 is also housed, light hurdle seat 7 is fixedly housed on light gate upright 6, light hurdle extend neck 8 is through light hurdle seat 7, in light hurdle extend neck 8 right-hand member nozzles, screw in smallcolumn diaphragm 9, left end nozzle is close to rotating filtering bar 4 mounting holes 401, rotating filtering bar 4 mounting holes 401 and light hurdle extend neck 8 center superpositions, extend neck 8 right-hand member nozzles in light hurdle are equipped with shading sleeve 10 outward, on described base plate 1, photomultiplier transit pipe holder 22 is also housed, photomultiplier 11 is housed on photomultiplier transit pipe holder 22, and photomultiplier 11 is accepted face and is aimed at light path.
On described base plate 1, test-tube stent 12 is also housed, receiving objective support 13 is fixedly equipped with in test-tube stent 12 upper ends, in receiving objective support 13 endoporus, receiving objective seat 14 is housed, accepting object lens circle 15 is pressed in receiver microscope base 14 right side ladder endoporus, receiving objective 16 packs receiver microscope base 14 inner close fittings into and accepts object lens circle 15 left surfaces, polaroid 17 is pressed in receiver microscope base 14 left side shoulder holes, is positioned at receiving objective 16 left sides.
Photoelectric interrupter seat 17a is also housed on described base plate 1, on photoelectric interrupter seat 17a, photoelectric interrupter 18 is housed, spacer 19 is housed on rotating filtering bar 4, spacer 19 is corresponding with photoelectric interrupter 18.
On described receiving objective support 13, limit spring sheet 20 is housed, limit spring sheet 20 is positioned at the recessed 401a of mounting hole 401 corresponding position limited location at rotating filtering bar 4.
Described spacer 19 use regulate holding screw 21 to be fixed on rotating filtering bar 4.
Described mounting hole 401 has 8, is circle-shaped and is uniformly distributed centered by stepper motor 3 output shafts.
A branch of full wavelength light is injected after polaroid 17, receiving objective 16 after by sample, arrives optical filter 502, and the sample light of selecting required wavelength after optical filter 502 enters photomultiplier 11 and receives, and computer system is sampled, and reads result.
In the present invention, optical filter 502 is contained on a rotating filtering bar 4 of being controlled by stepper motor 3, by stepper motor 3, rotates, and selects the light source of required wavelength, reaches the effect of automatic selection light source.Of the present invention is all around the relative position of each parts; it is not absolute position; the claimed technical scheme of the present invention is not limited only to the present invention and mentions embodiment, and any technology enlightenment that is subject to technical solution of the present invention all falls into protection domain of the present invention.
Claims (5)
1. Multi-wavelength optical rotatory instrument wavelength throw-over gear, it is characterized in that: it comprises base plate (1), support (2) is installed on base plate (1), stepper motor (3) is housed on support (2), on stepper motor (3) output shaft, rotating filtering bar (4) is housed, rotating filtering bar (4) is upper is at least uniform-distribution with a mounting hole (401) centered by stepper motor (3) output shaft, optical filter box (5) is housed in mounting hole (401), and rotating filtering bar (4) can rotate centered by stepper motor (3) output shaft;
Described optical filter box (5) comprises optical filter spheric seat (501), optical filter spheric seat (501) is contained in mounting hole (401) bottom, optical filter (502) is contained in optical filter spheric seat (501), and trim ring (503) is tightly against optical filter spheric seat (501) in the mounting hole (401) of rotating filtering bar (4) by elasticity saddle type circle (504);
Light gate upright (6) is also housed on described base plate (1), the upper light hurdle seat (7) that is fixedly equipped with of light gate upright (6), light hurdle extend neck (8) is through light hurdle seat (7), in light hurdle extend neck (8) right-hand member nozzle, screw in smallcolumn diaphragm (9), left end nozzle is close to rotating filtering bar (4) mounting hole (401), rotating filtering bar (4) mounting hole (401) and light hurdle extend neck (8) center superposition, light hurdle extend neck (8) right-hand member nozzle is equipped with shading sleeve (10) outward;
Photomultiplier transit pipe holder (22) is also housed on described base plate (1), photomultiplier (11) is housed on photomultiplier transit pipe holder (22), photomultiplier (11) is accepted face and is aimed at light path;
Test-tube stent (12) is also housed on described base plate (1), receiving objective support (13) is fixedly equipped with in test-tube stent (12) upper end, in receiving objective support (13) endoporus, receiving objective seat (14) is housed, accepting object lens circle (15) is pressed in the ladder endoporus of receiver microscope base (14) right side, receiving objective (16) packs receiver microscope base (14) inner close fitting into and accepts object lens circle (15) left surface, polaroid (17) is pressed in the shoulder hole of receiver microscope base (14) left side, is positioned at receiving objective (16) left side.
2. a kind of Multi-wavelength optical rotatory instrument wavelength as claimed in claim 1 throw-over gear, it is characterized in that: photoelectric interrupter seat (17a) is also housed on described base plate (1), photoelectric interrupter (18) is housed on photoelectric interrupter seat (17a), spacer (19) is housed on rotating filtering bar (4), and spacer (19) is corresponding with photoelectric interrupter (18).
3. a kind of Multi-wavelength optical rotatory instrument wavelength as claimed in claim 1 throw-over gear, it is characterized in that: limit spring sheet (20) is housed on described receiving objective support (13), and limit spring sheet (20) is positioned at mounting hole (401) corresponding position limited location recessed (401a) at rotating filtering bar (4).
4. a kind of Multi-wavelength optical rotatory instrument wavelength as claimed in claim 2 throw-over gear, is characterized in that: described spacer (19) is with regulating holding screw (21) to be fixed on rotating filtering bar (4).
5. a kind of Multi-wavelength optical rotatory instrument wavelength as claimed in claim 1 throw-over gear, is characterized in that: described mounting hole (401) has 8, is circle-shaped and is uniformly distributed centered by stepper motor (3) output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347685.8A CN102890058B (en) | 2012-09-18 | 2012-09-18 | Wavelength conversion mechanism of multi-wavelength polarimeter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210347685.8A CN102890058B (en) | 2012-09-18 | 2012-09-18 | Wavelength conversion mechanism of multi-wavelength polarimeter |
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| Publication Number | Publication Date |
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| CN102890058A CN102890058A (en) | 2013-01-23 |
| CN102890058B true CN102890058B (en) | 2014-07-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105067530B (en) * | 2015-08-06 | 2017-07-18 | 丁海铭 | Low transmission machinery copped wave simulator |
| CN106094223B (en) * | 2016-07-22 | 2018-10-23 | 江苏瑞祺生命科学仪器有限公司 | Optical wavelength lock |
| CN106338340B (en) * | 2016-08-26 | 2018-07-31 | 江苏天瑞仪器股份有限公司 | A kind of positioning device for spectral detection crystal switching device |
| CN106289520B (en) * | 2016-08-26 | 2017-09-29 | 江苏天瑞仪器股份有限公司 | One kind is used for spectral detection crystal switching device |
| CN108181239B (en) * | 2018-02-07 | 2023-09-12 | 张哲夫 | Optical system of multichannel fluorescence quantitative PCR instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004294293A (en) * | 2003-03-27 | 2004-10-21 | Neoark Corp | Method for collectively observing and measuring optical characteristics of plurality of different samples |
| TW200923418A (en) * | 2005-01-21 | 2009-06-01 | Nikon Corp | Exposure device, exposure method, fabricating method of device, exposure system, information collecting device, and measuring device |
| CN2862014Y (en) * | 2005-12-13 | 2007-01-24 | 陈妙凤 | Semi-automatic polarimeter |
| DE102007045891B4 (en) * | 2006-09-29 | 2011-03-17 | Carl Zeiss Smt Gmbh | Device for measuring the polarization state of light |
| CN202814864U (en) * | 2012-09-18 | 2013-03-20 | 上海仪电物理光学仪器有限公司 | Wavelength conversion mechanism of multi-wavelength polarimeter |
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