CN104359872A - Device for measuring wavelength transmittance - Google Patents
Device for measuring wavelength transmittance Download PDFInfo
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- CN104359872A CN104359872A CN201410616162.8A CN201410616162A CN104359872A CN 104359872 A CN104359872 A CN 104359872A CN 201410616162 A CN201410616162 A CN 201410616162A CN 104359872 A CN104359872 A CN 104359872A
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- light source
- light
- measuring
- thewavelengthtransmittance
- tapered lens
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Abstract
The invention discloses a device for measuring wavelength transmittance. The device comprises a light source bracket and a conical lens, wherein a plurality of light channels penetrating through the light source bracket are formed in the surface of the light source bracket; the conical lens is mounted below the light source bracket and is provided with a conical transmission hole penetrating through the bottom surface of the conical lens; light rays enter the light source bracket from the light channels and irradiate the top surface of the conical lens; after refracting, the light rays emit from the conical transmission hole in the direction parallel to the center line of the conical transmission hole, so that light rays of a plurality of light sources can be simultaneously refracted and condensed to form collimation light rays directly facing a light sensor in a limited section. Therefore, the multiple light rays from different light sources can penetrate through a test sample at the closer positions in the same direction and are received by the same light sensor, so that the transmittance of multiple wavelengths can be simultaneously measured, and the quantity of the used light sensor can be effectively reduced; the instrument cost is lowered.
Description
Technical field
The present invention relates to a kind of device for measuring Thewavelengthtransmittance, espespecially a kind ofly can be used for the device simultaneously measuring multiple Thewavelengthtransmittance.
Background technology
Biochemical Analyzer is quantitative to testing result by measuring sample absorptivity at specific wavelengths.Current Biochemical Analyzer mainly uses two kinds of optical measurement principles: a kind of is, with grating, the light from electromagnetic radiation or transmission is carried out light splitting, obtains the continuous spectrum of sample with linear light sensor array measurement light splitting; This principle is because the higher high end instrument being generally used for laboratory of cost.Another kind uses the logical optical filter of band to measure the transmissivity of sample on limited several specific wavelength; Because cost is lower, what most hand-held analyzer adopted is all this principle.
As shown in Figure 1, in the principle using the logical optical filter of band, filter 3 needs to be arranged on from light source 1 to the light path of optical sensor 6, the light 8 that light source 1 penetrates is through being radiated on sample 5 after filter 3, arrive described sensor 6 again, usually every bar light path can only comprise a filter 3, if therefore will measure N number of wavelength, appliance requires arranges the light path of N bar by different filter 3.
Because each light path needs use optical sensor, if so N number of wavelength will be detected just need to use N number of optical sensor.This on the one hand improves instrument cost, on the other hand because each optical sensor components exists certain difference, uses multiple optical sensor may cause measurement difference between the light path of each wavelength.When some need to use multiple wavelength to calculate detected value, the difference of optical sensor may cause the error of testing result.
On the other hand in order to ensure that every bar light path glazed thread is consistent at the light path of sample, the cross section of sample must be circular, and this causes very large restriction to reducing the sample size detected.The sample size detected is larger, and the use amount of reagent is more, and testing cost is higher.So the ability detecting micro-example is huge for the practical application meaning of instrument.Because the optical path length of Instrument measuring precision to sample has minimum requirement, must to ensure premised on optical path length so reduce sample detection amount.Current microcolorimetric ware is on the market the effective scheme reducing sample detection cost.Microcolorimetric ware makes sample in cross section form an elongated rectangle, and light through sample along the major axis of rectangle, so not only ensure that the length of light path but also significantly reduces sample detection amount.But microcolorimetric ware requires that the light path of different wave length passes cuvette with same direction in limited cross sections.
Therefore, be necessary to design a kind of low cost device for measuring Thewavelengthtransmittance newly, to overcome the problems referred to above.
Summary of the invention
For background technology institute problems faced, the object of the present invention is to provide a kind of device for measuring Thewavelengthtransmittance, not only can measure multiple Thewavelengthtransmittance simultaneously, the use amount of optical sensor can also be saved, effective lowering apparatus cost; Can also be used for measuring microcolorimetric ware simultaneously, effectively reduce testing cost.
For achieving the above object, the present invention adopts following technological means:
For measuring a device for Thewavelengthtransmittance, it is characterized in that, comprising: a light source bracket, described light source bracket surface is provided with multiple optical channel running through described light source bracket; One tapered lens, be installed on below described light source bracket, described tapered lens has the taper beam orifice that runs through its bottom surface, light enters described light source bracket from described optical channel and is radiated at described tapered lens end face, from described taper beam orifice along the direction injection being parallel to described taper beam orifice center line after refraction.
Further, described tapered lens end face is from top to bottom in the taper surface expanded gradually.
Further, described tapered lens side is from top to bottom in diminishing taper surface, and described taper beam orifice is from top to bottom in expanding shape design gradually.
Further, described tapered lens end face is provided with multiple trapezoidal inclined plane, described multiple trapezoidal inclined plane and described multiple optical channel one_to_one corresponding.
Further, described taper beam orifice inside surface has multiple triangular ramp, described multiple triangular ramp and described multiple trapezoidal inclined plane one_to_one corresponding.
Further, also comprise an anti-dazzling screen, described anti-dazzling screen is located at below described tapered lens, and it is corresponding with described taper beam orifice that described anti-dazzling screen has a perforate; Further preferred, also comprise optical sensor, described optical sensor is located at immediately below the perforate on anti-dazzling screen.
Further, described tapered lens is made up of organic glass or PC plastics.
Further, the angle of inclination of described tapered lens end face meets following computing formula:
χ= arctan((n sin(D) + sin(α))/(n cos(D) + cos(α)))，
The computing formula of D is: D=180-β-arc sin(cos(β)/n), wherein χ is the angle of inclination of tapered lens end face, and α is the incident angle of light, and β is the half-angle of taper beam orifice, and n is the refractive index of tapered lens material.
Further, described light source bracket is made up of lighttight plastics.
Further, also comprise multiple optical filter, correspondence is arranged in described optical channel respectively, and light enters described light source bracket from described optical channel and is radiated at described tapered lens end face through described optical filter.
Compared with prior art, the present invention has following beneficial effect:
The present invention is for measuring the device of Thewavelengthtransmittance, by a tapered lens is installed on below light source bracket, tapered lens is provided with the taper beam orifice that runs through its bottom surface, light enters described light source bracket from described optical channel and is radiated at described tapered lens end face, from described taper beam orifice along the direction injection being parallel to described taper beam orifice center line after refraction, the light of multiple above light source can be pooled many in limited cross sections just to the collimated ray of optical sensor by refraction simultaneously.Multiple light from Different Light can be made like this to pass test sample in close position and identical direction, and received by same optical sensor, not only can measure the transmissivity of multiple wavelength simultaneously, effectively can also save the use amount of optical sensor, reduce instrument cost, simultaneously when some need to use multiple wavelength to calculate detected value, effectively prevent the testing result error caused because of the difference of optical sensor.And this device goes for measuring microcolorimetric ware, effectively reduces testing cost.
accompanying drawing explanation
Fig. 1 is the schematic diagram using the logical optical filter of band to measure the multiple wavelength of sample in prior art;
Fig. 2 is the front view of a kind of device for measuring Thewavelengthtransmittance of the present invention;
Fig. 3 is the vertical view of a kind of device for measuring Thewavelengthtransmittance of the present invention;
Fig. 4 is a kind of stereographic map for measuring the light source bracket in the device of Thewavelengthtransmittance of the present invention;
Fig. 5 is a kind of stereographic map for measuring the tapered lens in the device of Thewavelengthtransmittance of the present invention;
Fig. 6 is a kind of light refraction schematic diagram for measuring the tapered lens in the device of Thewavelengthtransmittance of the present invention;
Fig. 7 is a kind of another embodiment stereographic map for measuring the tapered lens in the device of Thewavelengthtransmittance of the present invention.
Label declaration
Embodiment
For ease of better understanding object of the present invention, structure, feature and effect etc., existing the invention will be further described with embodiment by reference to the accompanying drawings.
Refer to Fig. 2 to Fig. 7, the present invention, for measuring the device of Thewavelengthtransmittance, comprising: a light source bracket 2, and described light source bracket 2 surface is provided with multiple optical channel 9 running through described light source bracket 2, each optical channel 9 is provided with a light source 1; Each optical channel 9 is provided with an optical filter 3; One tapered lens 4, is installed on the bottom of described light source bracket 2, and described tapered lens 4 has the taper beam orifice 10 that runs through its bottom surface.
Described light source bracket 2 is made up of light tight and plastics that are good heat resistance, and its side is arc surface, and described multiple optical channel 9 is located on described arc surface respectively.
Described tapered lens 4 is made up of the good organic glass of light transmission or PC plastics, described tapered lens end face is from top to bottom in the taper surface expanded gradually, side is from top to bottom in diminishing taper surface, described taper beam orifice 10 is from top to bottom in the pyramidal structure expanding shape design gradually, described tapered lens 4 end face is provided with multiple trapezoidal inclined plane 42, described multiple trapezoidal inclined plane 42 and described multiple optical channel 9 one_to_one corresponding, described taper beam orifice 10 inside surface has multiple triangular ramp 41, described multiple triangular ramp 41 and described multiple trapezoidal inclined plane 42 one_to_one corresponding, certainly in other embodiments, when light source is enough strong or optical sensor 6 pairs of luminous fluxes require lower, tapered lens 4 also can be designed to the mode as Fig. 7, the end face of described tapered lens 4 and the inside surface of described taper beam orifice 10 are respectively a smooth taper surface.
When measuring multiple Thewavelengthtransmittance of sample 5, sample 5 is fixed between anti-dazzling screen 7 and optical sensor 6, the light 8 of multiple light source 1 enters described optical filter 3 from described multiple optical channel 9 respectively and irradiates in described tapered lens 4, from described taper beam orifice 10 along the direction injection being parallel to described taper beam orifice 10 center line after refraction, received by described sensor 6 after described measurement sample 5; Certainly, in other embodiments, also can not establish an optical filter 3 respectively in described multiple optical channel 9, can establish an optical filter 3 between described sample 5 and described optical sensor 6, light 8 is first received by described sensor 6 through described optical filter 3 after described sample 5 again.
In order to control the size in the transmitted light cross section of described taper beam orifice 10 injection, can also limit further by using anti-dazzling screen 7, described anti-dazzling screen 7 is located at below described tapered lens 4, it is corresponding with described taper beam orifice 10 that described anti-dazzling screen 7 has a perforate, the perforate of described anti-dazzling screen 7 is larger, the transmitted light cross section of injection is larger, and anti-dazzling screen 7 perforate is less, and the printing opacity cross section of injection is less; So, the light 8 of described multiple light source 1 can arrive sensor 6 by many parallel light paths through sample 5 equally.
Refer to Fig. 6, the angle of inclination of tapered lens 4 described in the present invention meets following computing formula:
χ= arctan((n sin(D) + sin(α))/(n cos(D) + cos(α)))，
The computing formula of D is: D=180-β-arc sin(cos(β)/n), wherein χ is the angle of inclination of tapered lens end face, and α is the incident angle of light 71, and β is the half-angle of taper beam orifice 40, and n is the refractive index of tapered lens material.
To sum up, design focal point of the present invention is by arranging described tapered lens 4, light 8 enters from described optical channel 9 and irradiates in described tapered lens 4, thus described many light 8 are pooled many in limited cross sections just to the collimated ray of described optical sensor 6 after refraction.Test sample 5 is passed in close position and identical direction to make multiple light 8 from Different Light 1, and received by same optical sensor 6, not only can measure the transmissivity of multiple wavelength simultaneously, effectively can also save the use amount of optical sensor 6, reduce instrument cost, may be used for measuring microcolorimetric ware simultaneously, effectively reduce testing cost.Upper detailed description is only the explanation of the preferred embodiment of the present invention, non-ly therefore limits to the scope of the claims of the present invention, so the equivalence techniques change that all this creation of utilization instructionss and diagramatic content are done, is all contained in the scope of the claims of the present invention.
Claims (10)
1. for measuring a device for Thewavelengthtransmittance, it is characterized in that, comprising:
One light source bracket, described light source bracket surface is provided with multiple optical channel running through described light source bracket, is provided with light source in described optical channel;
One tapered lens, be installed on below described light source bracket, described tapered lens has the taper beam orifice that runs through its bottom surface, light enters described light source bracket from described optical channel and is radiated at described tapered lens end face, from described taper beam orifice along the direction injection being parallel to described taper beam orifice center line after refraction.
2. as claimed in claim 1 for measuring the device of Thewavelengthtransmittance, it is characterized in that: described tapered lens end face is from top to bottom in the taper surface expanded gradually.
3. as claimed in claim 2 for measuring the device of Thewavelengthtransmittance, it is characterized in that: described tapered lens side is for being diminishing taper surface from top to bottom, and described taper beam orifice is from top to bottom in expanding shape design gradually.
4. as claimed in claim 3 for measuring the device of Thewavelengthtransmittance, it is characterized in that: described tapered lens end face is provided with multiple trapezoidal inclined plane, described multiple trapezoidal inclined plane and described multiple optical channel one_to_one corresponding.
5. as claimed in claim 4 for measuring the device of Thewavelengthtransmittance, it is characterized in that: described taper beam orifice inside surface has multiple triangular ramp, described multiple triangular ramp and described multiple trapezoidal inclined plane one_to_one corresponding.
6. as claimed in claim 3 for measuring the device of Thewavelengthtransmittance, it is characterized in that: also comprise an anti-dazzling screen, described anti-dazzling screen is located at below described tapered lens, and it is corresponding with described taper beam orifice that described anti-dazzling screen has a perforate.
7. as claimed in claim 6 for measuring the device of Thewavelengthtransmittance, it is characterized in that, also comprise optical sensor, described optical sensor is located at immediately below the perforate on anti-dazzling screen.
8. as claimed in claim 3 for measuring the device of Thewavelengthtransmittance, it is characterized in that: the angle of inclination of described tapered lens end face meets following computing formula:
χ= arctan((n sin(D) + sin(α))/(n cos(D) + cos(α)))，
The computing formula of D is: D=180-β-arc sin(cos(β)/n),
Wherein χ is the angle of inclination of tapered lens end face, and α is the incident angle of light, and β is the half-angle of taper beam orifice, and n is the refractive index of tapered lens material.
9. as claimed in claim 3 for measuring the device of Thewavelengthtransmittance, it is characterized in that: described light source bracket is made up of lighttight plastics.
10. as claimed in claim 1 for measuring the device of Thewavelengthtransmittance, it is characterized in that: also comprise multiple optical filter, correspondence is arranged in described optical channel respectively, and light enters described light source bracket from described optical channel and is radiated at described tapered lens end face through described optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616162.8A CN104359872A (en) | 2014-11-05 | 2014-11-05 | Device for measuring wavelength transmittance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616162.8A CN104359872A (en) | 2014-11-05 | 2014-11-05 | Device for measuring wavelength transmittance |
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| Publication Number | Publication Date |
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| CN104359872A true CN104359872A (en) | 2015-02-18 |
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| CN201410616162.8A Pending CN104359872A (en) | 2014-11-05 | 2014-11-05 | Device for measuring wavelength transmittance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758729A (en) * | 1987-08-28 | 1988-07-19 | Spectra-Physics, Inc. | Apparatus and method for measuring the included angle of a reflective cone |
| CN101680836A (en) * | 2007-05-15 | 2010-03-24 | 株式会社日本自动车部品综合研究所 | Fuel property detecting device |
| CN203224445U (en) * | 2013-05-08 | 2013-10-02 | 北京硕泰汇丰科技有限公司 | Multi-wavelength optical detection device of water quality online analyzer |
| CN103954559A (en) * | 2014-04-02 | 2014-07-30 | 中国农业大学 | Multi-wavelength large power LED spot light source apparatus |
| CN204177742U (en) * | 2014-11-05 | 2015-02-25 | 上海启济科技有限公司 | A kind of device for measuring Thewavelengthtransmittance |
-
2014
- 2014-11-05 CN CN201410616162.8A patent/CN104359872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4758729A (en) * | 1987-08-28 | 1988-07-19 | Spectra-Physics, Inc. | Apparatus and method for measuring the included angle of a reflective cone |
| CN101680836A (en) * | 2007-05-15 | 2010-03-24 | 株式会社日本自动车部品综合研究所 | Fuel property detecting device |
| CN203224445U (en) * | 2013-05-08 | 2013-10-02 | 北京硕泰汇丰科技有限公司 | Multi-wavelength optical detection device of water quality online analyzer |
| CN103954559A (en) * | 2014-04-02 | 2014-07-30 | 中国农业大学 | Multi-wavelength large power LED spot light source apparatus |
| CN204177742U (en) * | 2014-11-05 | 2015-02-25 | 上海启济科技有限公司 | A kind of device for measuring Thewavelengthtransmittance |
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