CN2525509Y - Near infrared polarimeters - Google Patents
Near infrared polarimeters Download PDFInfo
- Publication number
- CN2525509Y CN2525509Y CN 01255794 CN01255794U CN2525509Y CN 2525509 Y CN2525509 Y CN 2525509Y CN 01255794 CN01255794 CN 01255794 CN 01255794 U CN01255794 U CN 01255794U CN 2525509 Y CN2525509 Y CN 2525509Y
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- China
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- circuit
- light source
- near infrared
- light path
- detecting device
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Abstract
The utility model relates to a near infrared polarimeters, which comprises a controlling part and a light path part, wherein, the light path part comprises a light source, an observation pipe and a detector. The utility model is characterized in that the light source uses a tungsten-halogen lamp, an infrared sensitive photoelectric multiplier pipe is used as the detector, and a Nicole prism polarizer, the observation pipe and the Nicole prism polarizer are arranged in sequence on the light path from the halogen tungsten light source to the infrared sensitive photoelectric multiplier pipe detector. The utility model has the advantages that the near infrared polarimeters can be directly used in the determination of the thicker color and impure solution without the need of earlier treatment by adding a lead reagent; therefore the procedure is convenient and in favor of human body health and environment protecting.
Description
The utility model relates to a kind of analytical instrument, and especially a kind of optical activity of utilizing material is carried out the analytical and testing instrument of assay.
For optically active substance, its optical activity is directly proportional with concentration, promptly
α＝KCL，
Wherein, α is an optical activity, and C is a concentration, and L is a sample path length, and K is a scale-up factor.Principle can be carried out quantitative test to optical active substance in view of the above.The instrument of measurement of species optical activity is polarimeter.Sucrose has optical activity, therefore mainly uses polarimeter to carry out the pol analysis in sugar industry.Existing polarimeter mainly uses sodium vapor lamp to make light source, and its wavelength is 589nm, and this can satisfy the less clarification sugar juice of impurity measures requirement.But owing to usually run into dark or some the muddy liquid glucose of some colors in the sugaring process, then need add dithizone and carry out clarifying treatment this moment, increased analytical procedure on the one hand, and used on the other hand dithizone impacts health and environment.Therefore, research new instrument and new method have become the task of top priority.
The purpose of this utility model is the shortcoming that overcomes prior art, and a kind of novel polarimeter that can directly measure color than dark or some muddy sucrose solution is provided.
For achieving the above object, the utility model has been done big technological improvement: with the halogen tungsten lamp as light source, make the polarizer and analyzer with Nicol, and make detecting device with red quick photomultiplier, add the components and parts that other are necessary, form polarimeter, polarimeter is worked in the near-infrared region.
According to the near infrared polarimeter of technique scheme design, have following advantage: at first, can be directly used in the mensuration than dark colour and more turbid solution, not carry out pre-treatment and do not need to add dithizone, simple procedure helps health and environmental protection.Secondly, this instrument has sufficiently high sensitivity and accuracy.
The utility model will be further described below in conjunction with drawings and Examples.
Accompanying drawing is a structural representation of the present utility model.
With reference to accompanying drawing, the utility model comprises control section (100) and light path part (200), and light path part (200) comprises light source, sighting tube and detecting device etc., it is characterized in that with halogen tungsten lamp (210) be light source, and red quick photomultiplier (290) is a detecting device; On from halogen tungsten lamp light source (210) to the light path of red quick photoelectricity times pipe detector (290), be provided with the Nicol polarizer (230), sighting tube (260) and Nicol analyzer (270) successively.
For the ease of detecting polarized light, between the Niccol polarizer (230) and sighting tube (250), be provided with modulator (240), described modulator (240) is by coil and place the magnetic rotation glass bar in the coil axis hole to form, and this magnetic rotation glass bar places on the light path.
In addition,, between the light source (210) and the polarizer (230), be provided with condenser (221) and field lens (222), between modulator (240) and sighting tube (260), be provided with collimating mirror (250) in order to optimize light channel structure; Between analyzer (270) and detecting device (290), be provided with field lens (281), optical filter (282) and diaphragm (283) successively.
Described control section (100) is made up of automatic high pressure circuit (110), pre-amplification circuit (120), selective frequency amplifier circuit (130), power amplification circuit (140), nonlinear Control circuit (150), the feedback circuit that tests the speed (160), servomotor (170), mechanical transmission mechanism (180), mould/number conversion circuit (190) and digital display circuit (191); Wherein the output of the high pressure of automatic high pressure circuit (110) is access to the power end of detecting device (290), the signal output part of detecting device (290) is access to servomotor (170) through pre-amplification circuit (120), selective frequency amplifier circuit (130) and power amplification circuit (140).The machinery output of servomotor (170) connects to analyzer (270) through mechanical transmission mechanism (180).Also be connected to the feedback circuit that tests the speed (160) between power amplification circuit (140) and the servomotor (170), between selective frequency amplifier circuit (130) and the feedback circuit that tests the speed (160), be connected to nonlinear Control circuit (150).In addition, also join with mould/number conversion circuit (190) at mechanical transmission mechanism (180) and analyzer (270), the output of mould/number conversion circuit (190) then is access to digital display circuit (191).
Each built-up circuit of above-mentioned control section (100) is ripe prior art.They unifications can be made a complete integrated circuit, also can finish by single card microcomputer.
Claims (4)
1. a near infrared polarimeter comprises control section (100) and light path part (200), and light path part (200) comprises light source, sighting tube and detecting device, it is characterized in that with halogen tungsten lamp (210) be light source, and red quick photomultiplier (290) is a detecting device; On from halogen tungsten lamp light source (210) to the light path of red quick photoelectricity times pipe detector (290), be provided with the Nicol polarizer (230), sighting tube (260) and Nicol analyzer (270) successively.
2. near infrared polarimeter according to claim 1, it is characterized in that between the Niccol polarizer (230) and sighting tube (260), being provided with modulator (240), described modulator (240) is by coil and place the magnetic rotation glass bar in the coil axis hole to form, and this magnetic rotation glass bar places on the light path.
3. near infrared polarimeter according to claim 2 is characterized in that being provided with condenser (221) and field lens (222) between the light source (210) and the polarizer (230), is provided with collimating mirror (250) between modulator (240) and sighting tube (260); Between analyzer (270) and detecting device (290), be provided with field lens (281), optical filtering electricity (282) and diaphragm (283) successively.
4. near infrared polarimeter according to claim 1 is characterized in that control section (100) is made up of automatic high pressure circuit (110), pre-amplification circuit (120), selective frequency amplifier circuit (130), power amplification circuit (140), nonlinear Control circuit (150), the feedback circuit that tests the speed (160), servomotor (170), mechanical actuation mechanism (180), mould/number conversion circuit (190) and digital display circuit (191); Wherein the output of the high pressure of automatic high pressure circuit (110) is access to the power end of detecting device (290), the signal output part of detecting device (290) is through pre-amplification circuit (120), selective frequency amplifier circuit (130) and power amplification circuit (140), be access to servomotor (170), the machinery output of servomotor (170) connects to analyzer (270) through mechanical transmission mechanism (180).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01255794 CN2525509Y (en) | 2001-09-19 | 2001-09-19 | Near infrared polarimeters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01255794 CN2525509Y (en) | 2001-09-19 | 2001-09-19 | Near infrared polarimeters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2525509Y true CN2525509Y (en) | 2002-12-11 |
Family
ID=33664864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01255794 Expired - Fee Related CN2525509Y (en) | 2001-09-19 | 2001-09-19 | Near infrared polarimeters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2525509Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109461A (en) * | 2010-11-30 | 2011-06-29 | 上海仪迈仪器科技有限公司 | Polarimeter for realizing quick measurement by stepping motor and measuring method thereof |
| CN101241070B (en) * | 2008-03-11 | 2011-08-17 | 上海理工大学 | Polarimeter for measuring optically-active rotation angle and its measurement method |
| CN103033477A (en) * | 2012-12-08 | 2013-04-10 | 河南师范大学 | High-precision portable polarimeter |
| CN103837479A (en) * | 2014-03-27 | 2014-06-04 | 江西农业大学 | Portable automatic polarimeter with open solution bin and measurement method thereof |
| CN106198401A (en) * | 2016-07-14 | 2016-12-07 | 上海仪电物理光学仪器有限公司 | The polariscope of manipulator without faraday based on photomultiplier tube |
| CN109425575A (en) * | 2017-09-04 | 2019-03-05 | 南京麒麟科学仪器集团有限公司 | A kind of polarimeter |
-
2001
- 2001-09-19 CN CN 01255794 patent/CN2525509Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241070B (en) * | 2008-03-11 | 2011-08-17 | 上海理工大学 | Polarimeter for measuring optically-active rotation angle and its measurement method |
| CN102109461A (en) * | 2010-11-30 | 2011-06-29 | 上海仪迈仪器科技有限公司 | Polarimeter for realizing quick measurement by stepping motor and measuring method thereof |
| CN103033477A (en) * | 2012-12-08 | 2013-04-10 | 河南师范大学 | High-precision portable polarimeter |
| CN103837479A (en) * | 2014-03-27 | 2014-06-04 | 江西农业大学 | Portable automatic polarimeter with open solution bin and measurement method thereof |
| CN103837479B (en) * | 2014-03-27 | 2016-09-07 | 江西农业大学 | A kind of Portable Automatic polarimeter with open type solution storehouse and measuring method |
| CN106198401A (en) * | 2016-07-14 | 2016-12-07 | 上海仪电物理光学仪器有限公司 | The polariscope of manipulator without faraday based on photomultiplier tube |
| CN106198401B (en) * | 2016-07-14 | 2019-02-15 | 上海仪电物理光学仪器有限公司 | The polarimeter without faraday's modulator based on photomultiplier tube |
| CN109425575A (en) * | 2017-09-04 | 2019-03-05 | 南京麒麟科学仪器集团有限公司 | A kind of polarimeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |