CN201917562U - Light path structure of visible ultraviolet light detector - Google Patents
Light path structure of visible ultraviolet light detector Download PDFInfo
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- CN201917562U CN201917562U CN201020657518XU CN201020657518U CN201917562U CN 201917562 U CN201917562 U CN 201917562U CN 201020657518X U CN201020657518X U CN 201020657518XU CN 201020657518 U CN201020657518 U CN 201020657518U CN 201917562 U CN201917562 U CN 201917562U
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Abstract
The utility model provides a light path structure of a visible ultraviolet light detector. The light path structure comprises a lamp holder, a convex lens group, a slit, an optical filter, a plane reflector, a concave grating, a beam splitting lens, a reference receiver, a flow cell and a sample receiver, wherein a deuterium lamp and a tungsten lamp can be arranged on the lamp holder simultaneously; the concave grating is driven by a grating motor through a grating motor base; and different wavelengths can be selected by rotating the grating motor by different angles. By the light path structure, light absorption change between 190 and 700 nanometers can be measured without detaching or replacing a lamp source.
Description
Technical field:
The utility model relates to a kind of light channel structure of ultraviolet-visible detector, belongs to the liquid chromatography field.
Background technology:
Generally comprise chromatographic column, transfusion unit, sample injection unit and detecting unit in the liquid chromatographic system.Ultraviolet-visible detector is one of detecting unit that is most widely used, and the light absorption that can measure 190nm～700nm scope changes.
Existing ultraviolet-visible detector generally comprises lamp source, flow cell and photoelectric conversion component, comprises that in addition optical filter, prism or grating etc. are used for wavelength and select.The light path design more complicated of existing detecting device, structural redundancy need be changed deuterium lamp (light absorption that is used to measure wavelength coverage 190～350nm changes) and tungsten lamp (being used to measure the light absorption variation of wavelength coverage 350～700nm) at different application scenario the time.The physical construction of conversion wavelength and complicated operating process are easy to generate cumulative errors, the repeatability and the accuracy of wavelength impacted, thereby influence the performance and the precision of detecting device.
The utility model content:
Cause the not high shortcoming of precision in order to overcome existing ultraviolet-visible detector because of institutes such as complicated in mechanical structure and complex operation step, the utility model provides a kind of ultraviolet-visible detector light channel structure, use fairly simple physical construction to realize the physics light path, and can under the situation that does not change the lamp source, realize the measurement of the light absorption variation of 190nm～700nm scope.Use 256 step segmentation high precision stepper motors and motor-driven to realize accurately control motor corner, thereby realize the accurate control and the repeatability of wavelength.
Term in instructions and/or claims " on ", D score, " left side ", " right side " etc. generally be used for descriptive purpose and needn't describe exclusive relative position all sidedly.Herein, for simplicity, in conjunction with the accompanying drawings 1, before definition near lamp base part is, away from lamp base part be after.
A kind of ultraviolet-visible detector light channel structure of the utility model, this light channel structure mainly is made up of lamp socket, lens combination, slit, optical filter, plane mirror, concave holographic grating, semi-transparent semi-reflecting lens, reference receiver, flow cell and sample receiver, lamp socket is provided with two mounting holes that become an angle of 90 degrees, wavelength coverage is installed at 190nm～350nm deuterium lamp in the hole of vertical direction, and the mounting hole of horizontal direction is installed the tungsten lamp 3 of wavelength coverage at 350nm～700nm.Deuterium lamp and tungsten lamp can be simultaneously with fixing on the same lamp socket, when using 190nm～350nm ultraviolet band, light deuterium lamp and close tungsten lamp, when using 350nm～700nm visible waveband, light tungsten lamp and close deuterium lamp, thereby avoid dismounting and change lamp source.Be provided with lens combination at distance lamp socket x1 place, this lens combination is made up of two identical convex lens, make the convergence of rays of sending from light source be imaged on apart from the slit of lens combination x2 in the heart.Behind slit, be provided with optical filter, be used for the parasitic light that filtering grating second-order diffraction produces.Be provided with plane mirror at distance slot distances x3 place, angle is a/2 between the normal of plane mirror and the horizontal line, and light reflexes to post-concentration on the concave grating through plane mirror, and concave grating is directly driven by the grating motor through the grating motor cabinet.The grating motor adopts 256 step segmentation high precision stepper motor and driving circuits.Grating driven by motor grating motor cabinet and then drive concave grating different rotation angle subtly can realize selecting different wave length.Be provided with semi-transparent semi-reflecting lens behind the concave grating, angle is 45 degree between its normal and the horizontal line, and half reflexes to light on the reference receiver, and second half transmission is incided on the sample receiver on the mirror end face of flow cell pond afterwards.
The advantage of a kind of ultraviolet-visible detector light channel structure of the utility model and effect foot: simplified the physical construction of ultraviolet-visible detector effectively; Save the operation steps of changing deuterium lamp and tungsten lamp, shortened the time of adjusting instrument.
Description of drawings:
Accompanying drawing is included in this instructions to provide further understanding of the present utility model, and be attached in this instructions and constitute the part of this instructions, accompanying drawing shows embodiment of the present utility model, and is used from explanation principle of the present utility model with instructions one.In the accompanying drawing:
Fig. 1 is a light channel structure synoptic diagram of the present utility model.
Fig. 2 is a light channel structure three-dimensional plot of the present utility model.
Concrete label is as follows among the figure:
1, lamp socket 2, deuterium lamp
3, tungsten lamp 4, lens combination
5, slit 6, optical filter
7, plane mirror 8, concave grating
9, semi-transparent semi-reflecting lens 10, reference receiver
11, flow cell 12, sample receiver
13, grating motor cabinet 14, grating motor
Embodiment:
A kind of ultraviolet-visible detector light channel structure of the utility model, as shown in Figure 1 and Figure 2, this light channel structure mainly is made up of lamp socket 1, deuterium lamp 2, tungsten lamp 3, convex lens group 4, slit 5, optical filter 6, plane mirror 7, concave grating 8, semi-transparent semi-reflecting lens 9, reference receiver 10, flow cell 11, sample receiver 12, grating motor cabinet 13 and grating motor 14.Wherein lamp socket 1 is provided with two mounting holes that become an angle of 90 degrees, and wavelength coverage is installed at 190nm～350nm deuterium lamp 2 in the hole of vertical direction, and the mounting hole of horizontal direction is installed the tungsten lamp 3 of wavelength coverage at 350nm～700nm.Deuterium lamp 2 and tungsten lamp 3 are fixed on the lamp socket 1 simultaneously, light deuterium lamp 2 and close tungsten lamp 3 when using 190nm～350nm ultraviolet band, light tungsten lamp 3 and close deuterium lamp 2 when using 350nm～700nm visible waveband, thereby save dismounting and change lamp source step.In distance lamp socket 1 length is that the x1 place is provided with a lens combination 4, make the convergence of rays of sending from light source distance convex lens group 4 length be the slit 5 of x2 in the heart.Behind slit 5, be provided with optical filter 6, be used for the parasitic light that filtering grating secondary color produces.In distance slit 5 length is that the x3 place is provided with plane mirror 7, angle is a/2 between the normal of plane mirror 7 and the horizontal line, light incides post-concentration on the concave grating 8 through plane mirror 7, and concave grating 8 is directly driven by grating motor 14 through grating motor cabinet 13.The grating electric system adopts 256 step segmentation high precision stepper motor and driving circuits.Grating driven by motor grating motor cabinet and then drive concave grating different rotation angle subtly can realize selecting different wave length.Be provided with semi-transparent semi-reflecting lens 9 behind the concave grating 8, angle is 45 degree between its normal and the horizontal line, and half reflexes to light on the reference receiver 10, and second half transmission is incided on the sample receiver 12 on flow cell 11 pond mirror end faces afterwards.
Claims (6)
1. the light channel structure of a ultraviolet-visible detector, this light channel structure comprises lamp socket, deuterium lamp, tungsten lamp, lens combination, slit, optical filter, plane mirror, concave grating, semi-transparent semi-reflecting lens, reference receiver, flow cell and sample receiver, it is characterized in that:
This concave grating is directly driven by the grating motor through the grating motor cabinet, and wherein this grating motor adopts segmentation high precision stepper motor and driving circuit.
2. ultraviolet-visible detector light channel structure according to claim 1, its feature further is:
Lamp socket is provided with 2 mounting holes that become an angle of 90 degrees, and wavelength coverage is installed at 190nm～350nm deuterium lamp in the hole of vertical direction, and the mounting hole of another horizontal direction is installed the tungsten lamp of wavelength coverage at 350nm～700nm.
3. ultraviolet-visible detector light channel structure according to claim 1, its feature further is: the convex lens group is respectively x1 and x2 from lamp socket and slot distances, makes the optical convergence that sends from light source be imaged on the slit central hole.
4. ultraviolet-visible detector light channel structure according to claim 1, its feature further is: the optical filter that is provided with the second-order diffraction that is used for the filtering grating after slit.
5. ultraviolet-visible detector light channel structure according to claim 1, its feature further is: angle is a/2 between the normal of plane mirror and the horizontal light, and light incides on the concave holographic grating through plane mirror.
6. ultraviolet-visible detector light channel structure according to claim 1, its feature further is: angle is 45 degree between the normal of semi-transparent semi-reflecting lens and the horizontal light, half incides sample receiver after being transmitted to flow cell light, and half reflexes to the reference receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020657518XU CN201917562U (en) | 2010-12-14 | 2010-12-14 | Light path structure of visible ultraviolet light detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020657518XU CN201917562U (en) | 2010-12-14 | 2010-12-14 | Light path structure of visible ultraviolet light detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201917562U true CN201917562U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020657518XU Expired - Lifetime CN201917562U (en) | 2010-12-14 | 2010-12-14 | Light path structure of visible ultraviolet light detector |
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| CN (1) | CN201917562U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316629A (en) * | 2014-10-14 | 2015-01-28 | 安徽皖仪科技股份有限公司 | Liquid phase multi-channel detector device |
| CN104769501A (en) * | 2012-10-05 | 2015-07-08 | 卡尔蔡司Smt有限责任公司 | Monitor system for determining orientations of mirror elements and euv lithography system |
| CN104777259A (en) * | 2015-04-16 | 2015-07-15 | 浙江福立分析仪器有限公司 | Ultraviolet detector optical subdivision device |
| CN105092498A (en) * | 2015-09-17 | 2015-11-25 | 天津港东科技发展股份有限公司 | Control device for double-beam ultraviolet and visible spectrophotometer |
| CN116202979A (en) * | 2023-03-24 | 2023-06-02 | 郑州航空工业管理学院 | Water quality on-line analysis device based on ultraviolet spectroscopy |
-
2010
- 2010-12-14 CN CN201020657518XU patent/CN201917562U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769501A (en) * | 2012-10-05 | 2015-07-08 | 卡尔蔡司Smt有限责任公司 | Monitor system for determining orientations of mirror elements and euv lithography system |
| US9563129B2 (en) | 2012-10-05 | 2017-02-07 | Carl Zeiss Smt Gmbh | Monitor system for determining orientations of mirror elements and EUV lithography system |
| CN104316629A (en) * | 2014-10-14 | 2015-01-28 | 安徽皖仪科技股份有限公司 | Liquid phase multi-channel detector device |
| CN104777259A (en) * | 2015-04-16 | 2015-07-15 | 浙江福立分析仪器有限公司 | Ultraviolet detector optical subdivision device |
| CN105092498A (en) * | 2015-09-17 | 2015-11-25 | 天津港东科技发展股份有限公司 | Control device for double-beam ultraviolet and visible spectrophotometer |
| CN116202979A (en) * | 2023-03-24 | 2023-06-02 | 郑州航空工业管理学院 | Water quality on-line analysis device based on ultraviolet spectroscopy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
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| CX01 | Expiry of patent term | ||
| DD01 | Delivery of document by public notice |
Addressee: Xiao Yong Document name: Notice of termination of patent right |
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| DD01 | Delivery of document by public notice |