CN2219496Y - Transmission-reflection focusing type diffuse reflection spectrum analysis measurer - Google Patents
Transmission-reflection focusing type diffuse reflection spectrum analysis measurer Download PDFInfo
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- CN2219496Y CN2219496Y CN 94208629 CN94208629U CN2219496Y CN 2219496 Y CN2219496 Y CN 2219496Y CN 94208629 CN94208629 CN 94208629 CN 94208629 U CN94208629 U CN 94208629U CN 2219496 Y CN2219496 Y CN 2219496Y
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- 238000010183 spectrum analysis Methods 0.000 title claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000005357 flat glass Substances 0.000 claims description 3
- 238000003306 harvesting Methods 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012491 analyte Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
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Abstract
The utility model relates to a transmission-reflection focusing type diffuse reflection spectrum analysis measurer, which is mainly composed of a light source, a light focusing mirror, a rotating disk with different wave lengths and provided with a pass filter, a plane reflection mirror, a prepositioned light focusing mirror, a concave reflection mirror, a photodetector, a housing, a signal amplifier, a synchronizing signal generator, a motor with steady speed, a signal processing part, a displaying system, a power source, etc., wherein, the prepositioned light focusing mirror is a convex lens, and the motor with steady speed is a mini tape recorder. The utility model has the advantages of small volume and convenience for carrying.
Description
The utility model belongs to optical profile type analysis to measure instrument.
Existing diffuse reflection spectrum analysis measuring device adopts the spheric reflection mirror more, and transmission-type or integrating sphere type light collection system are collected on the photoelectric detector diffusing of material to be analyzed is as much as possible.Wherein, the shortcoming of spheric reflection mirror is the reflective mirror that needs to make big mouth mirror, because the bore of reflective mirror is big, focal length just can not be little, and therefore, the volume of reflective light collection system is big and don't may assemble luminous point enough for a short time; Though transmission-type can have little lens dimension and short focal length, but under the identical condition of focal length, aberration is bigger than the reflection mirror, general structure is also compact inadequately, and must adopt special optical material for the measurement in infrared or ultraviolet wavelength district, patent of invention (CN1051979A) promptly belongs to this type of; But it requires measured sample to be close on the integrating sphere, therefore limited usable range, in addition, in the prior art, the various monochromatic light of the analyzed Measuring Object of throwing light on respectively mostly adopt servomotor to drive the disk that the different wave length optical filter is housed before the light source and rotate and realize, in order to obtain stable signal output, this motor need be equipped with complicated speed stabilizing driving circuit, thereby volume is bigger, complex structure.
The purpose of this utility model is exactly for overcoming above-mentioned shortcoming, and prior art is improved, and designs little and the structure that light collecting light ability is strong of a short volume.
The technical solution of the utility model is to change the window glass before the concave mirror of prior art into convex lens to improve the collection angle that object diffuses as preposition condenser, the bore and the focal length of concave mirror are reduced, reduce the horizontal and vertical size of instrument with this.In addition, use servomotor the motor of commercially available mini tape recorder instead, i.e. DC electronics steady speed motor and save the speed stabilizing driving circuit, thereby to reduce the overall dimension of instrument.
Concrete structure of the present utility model is by light source 1, condenser 2, the rotating disk 4 of different wave length bandpass filter 3 is housed, plane mirror 5, preposition condenser 6, concave mirror 7, photodetector 8, housing 9, signal amplifier 10, synchronous generator 11, steady speed motor 12, signal Processing is formed with display system 13 and power supply 14.Preposition condenser, catoptron, photodetector and concave mirror wherein is contained in the same housing 9, they be centered close on same the straight line, and this straight line is optical axis.The side of housing 9 has a circular hole to make the light from light source enter housing again by catoptron 5 reflections through this circular hole, sees through preposition condenser then and goes illuminated objects (M).Condenser 2 is being installed between the circular hole of light source and housing and the rotating disk 4 of some kinds of different wave length bandpass filters is housed on it, this rotating disk is driven by steady speed motor (motor of mini tape recorder) and carries out speed stabilizing and rotate.Along with the rotation of rotating disk, make white light pass through different optical filters successively, and the object condenser 2 that the monochromatic light of acquisition different wave length throws light on tested respectively is combined into collimator objective with preposition condenser 6 from light source, the monochromatic light that makes illuminated objects is directional light.Therefore, preposition condenser generally is plano-convex lens, sometimes middle body is made the shape light that its edge part of sheet glass is convex lens.Electric explorer 8 is installed in object (M) by on preposition condenser and the image point position that concave mirror is become.Steady speed motor 12, light source 1 and signal Processing and display system 13 are by same power supply 14 power supplies
The utility model has the advantages that volume is little and easy to carry.
Under regard to accompanying drawing and describe.At first powered to light source 1, steady speed motor 12 and signal Processing and display system 13 by power supply 14, at this moment instrument is in running order.Open the switch light that then light source is luminous at once, condenser 2 is collected light source of light source 1, refraction reflexes to preposition condenser by catoptron 5 again after filtration mating plate 3 becomes monochromatic light, becomes parallel beam working flare (M) after the outgoing.Because the object of general analyzed measurement is rough surface, therefore the monochromatic light with illumination soaks reflection, and preposition condenser arrives photodetector 8 after again the diffused light of collecting being delivered to the concave reflection mirror reflection.Because this photodetector and object (M) conjugation, therefore, preposition condenser and concave mirror are collected more luminous energy and are delivered to photodetector.Because it is diffusing of object, therefore, much smaller when the relative aperture of concave mirror does not have preposition condenser through just arriving concave mirror after the refraction of preposition condenser.The signal that signal amplifier 10 is sent photodetector here is delivered to signal Processing and display system 13 after amplifying, and synchronous generator 11 is used for the demodulation of pulse, is the monochromatic light pulse because optical filter provides along with the rotation of rotating disk.The signal that synchronizing signal and amplifier provide is handled in signal processing system simultaneously, and its result is shown by display, promptly provides the composition and the content of analyte.
Embodiment of the present utility model is a kind of near-infrared reflection formula water analysis instrument, can be used for the contactless or online quick determination of moisture of solid materials such as pipe tobacco, cereal, medicine.Preposition condenser employing bore is 56 millimeters convex lens, and its focal length is 80 millimeters.The bore of concave mirror is 60 millimeters, and radius-of-curvature is 70 millimeters, is divided into 70 millimeters between two mirrors, and the parallel beam diameter is 10 millimeters on the sample.Photodetector is an ead sulfide detector, and it is same as the prior art that amplifier amplifies about 80dB synchronous generator, and it is to add pulse shaping circuit by Hall element to be constituted.Motor is the motor of commercially available mini tape recorder.Two optical filters that wavelength is different are housed on the filter wheel, and effectively clear aperature is 10 millimeters, and velocity of rotation is 1250rpm.The centre wavelength of an optical filter is the absorbing wavelength 1.94 μ m of moisture, as the determination of moisture signal wavelength, another centre wavelength is selected in the very little about 1.8 mum wavelength places of moisture effects, when being in the moisture absorption wavelength location, filter wheel obtains measuring-signal M as the reference signal wavelength, when being in the reference wavelength position, rotating disk obtains reference signal R, the reflected light signal value that the moisture of its both ratio M/R and determined material is inversely proportional to and has in the signal processing system single-chip microcomputer timesharing ground to gather two wavelength then can demonstrate the moisture value of material through signal Processing and computing.Therefore, instrument is through realizing the quick determination of moisture to solid material after demarcating in advance.
Claims (3)
1. one kind reflects light harvesting formula diffuse reflection spectrum analysing and measuring instrument thoroughly, mainly by light source [1], condenser [2], the rotating disk [4] of different wave length bandpass filter [3] is housed, plane mirror [5], preposition condenser [6], concave mirror [7], photodetector [8], housing [9], signal amplifier [10], synchronous generator [11], steady speed motor [12], signal Processing are formed with display system [13] and power supply [14], it is characterized in that preposition condenser is convex lens.
2. according to right 1 said preposition condenser, it is characterized in that adopting middle body is sheet glass, and the marginal portion is the shape of convex lens.
3. according to the said spectral analysis measuring instrument of claim 1, it is characterized in that the motor with mini tape recorder, promptly DC electronics steady speed motor is as steady speed motor [12].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94208629 CN2219496Y (en) | 1994-04-07 | 1994-04-07 | Transmission-reflection focusing type diffuse reflection spectrum analysis measurer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94208629 CN2219496Y (en) | 1994-04-07 | 1994-04-07 | Transmission-reflection focusing type diffuse reflection spectrum analysis measurer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219496Y true CN2219496Y (en) | 1996-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94208629 Expired - Fee Related CN2219496Y (en) | 1994-04-07 | 1994-04-07 | Transmission-reflection focusing type diffuse reflection spectrum analysis measurer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219496Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427904C (en) * | 2005-01-05 | 2008-10-22 | 中国科学院长春光学精密机械与物理研究所 | Double diffuse reflection apparatus for space |
| CN102798597A (en) * | 2012-08-13 | 2012-11-28 | 浙江大学 | Soil total nitrogen content detection apparatus and method |
| CN102830071A (en) * | 2012-08-13 | 2012-12-19 | 浙江大学 | Detection apparatus and method for total phosphorus content in soil |
| CN106990052A (en) * | 2015-12-25 | 2017-07-28 | 大塚电子株式会社 | Optical characteristics determines device and optical system |
| CN110333241A (en) * | 2019-07-09 | 2019-10-15 | 湖南晗光智能科技股份有限公司 | A kind of vision detection system and detection method of firework product |
| CN110376206A (en) * | 2019-07-09 | 2019-10-25 | 湖南晗光智能科技股份有限公司 | A kind of the lead vision detection system and detection method of fireworks |
-
1994
- 1994-04-07 CN CN 94208629 patent/CN2219496Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427904C (en) * | 2005-01-05 | 2008-10-22 | 中国科学院长春光学精密机械与物理研究所 | Double diffuse reflection apparatus for space |
| CN102798597A (en) * | 2012-08-13 | 2012-11-28 | 浙江大学 | Soil total nitrogen content detection apparatus and method |
| CN102830071A (en) * | 2012-08-13 | 2012-12-19 | 浙江大学 | Detection apparatus and method for total phosphorus content in soil |
| CN102830071B (en) * | 2012-08-13 | 2015-01-21 | 浙江大学 | Detection apparatus and method for total phosphorus content in soil |
| CN106990052A (en) * | 2015-12-25 | 2017-07-28 | 大塚电子株式会社 | Optical characteristics determines device and optical system |
| CN106990052B (en) * | 2015-12-25 | 2021-07-27 | 大塚电子株式会社 | Optical characteristic measuring device and optical system |
| CN110333241A (en) * | 2019-07-09 | 2019-10-15 | 湖南晗光智能科技股份有限公司 | A kind of vision detection system and detection method of firework product |
| CN110376206A (en) * | 2019-07-09 | 2019-10-25 | 湖南晗光智能科技股份有限公司 | A kind of the lead vision detection system and detection method of fireworks |
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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 |