CN106404172A - Parallel linkage displacement slit mechanism for spectrophotometer - Google Patents
Parallel linkage displacement slit mechanism for spectrophotometer Download PDFInfo
- Publication number
- CN106404172A CN106404172A CN201611018816.2A CN201611018816A CN106404172A CN 106404172 A CN106404172 A CN 106404172A CN 201611018816 A CN201611018816 A CN 201611018816A CN 106404172 A CN106404172 A CN 106404172A
- Authority
- CN
- China
- Prior art keywords
- slit
- lever
- cam
- gear
- spectrophotometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 10
- 210000003813 thumb Anatomy 0.000 claims description 3
- 230000009466 transformation Effects 0.000 abstract 1
- 230000003595 spectral effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/04—Slit arrangements slit adjustment
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention provides a parallel linkage displacement slit mechanism for a spectrophotometer. The parallel linkage displacement slit mechanism comprises a stepping motor, gears, a cam, a lever rotation plate and a slit plate. The output shaft of the stepping motor is provided with a first gear which is engaged with the second gear on a driven rod. The driven rod is also provided with the cam. The cam and the lever rotation plate are linked through a dial wheel which always presses against the cam and the lever rotation plate. The lever rotation plate is provided with a rotation shaft whose upper and lower sides are symmetrically provided with a first slit piece lever and a second slit piece lever. The two first slit piece lever and the second slit piece lever are matched with the gaps of the lower parts of the first slit piece lever and the second slit piece lever. Compared with the prior art, the parallel linkage displacement slit mechanism has the advantages that different wave number positions have corresponding slit widths, the ratio transformation of the slit widths is realized, the accuracy of the spectrophotometer and operation convenience are greatly improved.
Description
Technical field
The present invention relates to optical instrument field and in particular to a kind of spectrophotometer with parallel linkage displacement slit mechanism.
Background technology
Grating is also referred to as diffraction grating, is to make light that the optical element of dispersion to occur using many seam principles, it is one piece and is carved with greatly
Measure the parallel wide, flat glass of equidistant slit or sheet metal.The slot number of grating is very big, and typically every millimeter tens to thousand of
Bar.Monochromatic collimated beam passes through the interference between the diffraction of each seam of grating and each seam, forms the figure that dark fringe is very wide, bright fringe is very thin
Sample, these sharp thin and bright stripeds are referred to as spectral line, and the position of spectral line is different with wavelength, when polychromatic light is after grating, different
The spectral line of wavelength occurs in different positions and forms spectrum.It is single slit diffraction and multislit interference that light forms spectrum by grating
Common results.Grating is typically used cooperatively with spectrometer.In existing spectrophotometer, two slit sheets cannot be realized linking, from
And the requirement that different beam location have different slit width cannot be realized, bring a lot of inconvenience to the use of spectrometer.
Content of the invention
Problem to be solved by this invention is to overcome the deficiencies in the prior art, and providing can be with the width of accurate adjustment slit
And the spectrophotometer of magnification transformable with parallel linkage displacement slit mechanism.
The present invention solves its technical problem and takes technical scheme below to realize：
A kind of spectrophotometer with parallel linkage displacement slit mechanism, including motor, gear, cam, driving lever flap and narrow
Patch, the output shaft of described motor is provided with first gear, and first gear is engaged with the second gear on follower lever, from
Cam is additionally provided with lever, passes through between cam and driving lever flap to be linked with the thumb wheel offseting both it all the time, described
Driving lever flap is provided with a rotary shaft, and the monosymmetric up and down of rotary shaft is provided with the first slit sheet driving lever and the second slit sheet
Driving lever, two slit sheet driving levers are matched with the breach of the first slit sheet and the second slit sheet bottom respectively.
The operation principle of the present invention：Photometric data processing unit controller unit carry out wave number scanning while, no
Disconnected send instruction control slit motor corner, by the radius vector change of slot cam, thus changing the width of slit,
So, it is achieved that the requirement in different beam location with corresponding slit width, in addition, instrument passes through the preset step of program
Stepper motor has different Initial Turning Angles it is achieved that the magnification transformable of slit width.
The present invention compared with prior art has significant advantage and beneficial effect：Achieve in different beam location tools
There is corresponding slit width, and achieve the magnification transformable of slit width, greatly improve photometric accuracy and behaviour
Make convenient degree.
Brief description
Fig. 1 is the structural representation of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to the specific embodiment providing according to the present invention, structure, feature and its
Effect, after describing in detail such as.
A kind of parallel displacement slit mechanism that links of spectrophotometer as shown in Figure 1, including band 50：The step of 1 change speed gear box
Stepper motor 1, gear 2, cam 4, driving lever flap 6 and slit sheet, the output shaft 21 of described motor 1 is provided with first gear
2, first gear is engaged with the second gear 3 on follower lever 31, and follower lever 31 is additionally provided with cam 4, cam 4 and driving lever flap 6
Between by being linked with the thumb wheel 5 offseting both it all the time, described driving lever flap is provided with a rotary shaft 62, rotation
The monosymmetric up and down of axle is provided with the first slit sheet driving lever 61 and the second slit sheet driving lever 63, two slit sheet driving levers respectively with
The breach 9 of the first slit sheet 8 and the second slit sheet 7 bottom matches.
The operation principle of the present invention：Photometric data processing unit controller unit carry out wave number scanning while, no
Disconnected send instruction control slit motor corner, by the radius vector change of slot cam, thus changing the width of slit,
So, it is achieved that the requirement in different beam location with corresponding slit width, in addition, instrument passes through the preset step of program
Stepper motor has different Initial Turning Angles it is achieved that the magnification transformable of slit width.
Method is cut again by excessive backhaul and eliminates mechanical hysterisis error.
Above one embodiment of the present of invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example is it is impossible to be considered the practical range for limiting the present invention.All impartial changes made according to the present patent application scope and improvement
Deng all should still belong within the patent covering scope of the present invention.
Claims (1)
1. a kind of spectrophotometer with parallel linkage displacement slit mechanism it is characterised in that：Including motor, gear, cam,
Driving lever flap and slit sheet, the output shaft of described motor is provided with first gear, the on first gear and follower lever
Two gear engagements, follower lever are additionally provided with cam, pass through to be entered with the thumb wheel offseting both it all the time between cam and driving lever flap
Row linkage, described driving lever flap is provided with a rotary shaft, and monosymmetric up and down first slit sheet that is provided with of rotary shaft is dialled
Bar and the second slit sheet driving lever, two slit sheet driving levers are matched with the breach of the first slit sheet and the second slit sheet bottom respectively
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018816.2A CN106404172A (en) | 2016-11-21 | 2016-11-21 | Parallel linkage displacement slit mechanism for spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018816.2A CN106404172A (en) | 2016-11-21 | 2016-11-21 | Parallel linkage displacement slit mechanism for spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404172A true CN106404172A (en) | 2017-02-15 |
Family
ID=58069043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611018816.2A Pending CN106404172A (en) | 2016-11-21 | 2016-11-21 | Parallel linkage displacement slit mechanism for spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404172A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006528A (en) * | 2017-12-20 | 2019-07-12 | 耶拿分析仪器股份公司 | Spectrometer device, the method and optical component group for generating two-dimension spectrum |
| CN115560851A (en) * | 2022-09-22 | 2023-01-03 | 上海元析仪器有限公司 | Automatic slit changing device for spectrometer capable of spatial filtering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103240A (en) * | 2009-12-22 | 2011-06-22 | 天津市拓普仪器有限公司 | Stepless variable slit device |
| CN102141507A (en) * | 2010-01-29 | 2011-08-03 | 北京普析通用仪器有限责任公司 | Installation debugging method of continuously variable slit mechanism |
| CN206601185U (en) * | 2016-11-21 | 2017-10-31 | 天津市拓普仪器有限公司 | Spectrophotometer with it is parallel linkage displacement slit mechanism |
-
2016
- 2016-11-21 CN CN201611018816.2A patent/CN106404172A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103240A (en) * | 2009-12-22 | 2011-06-22 | 天津市拓普仪器有限公司 | Stepless variable slit device |
| CN102141507A (en) * | 2010-01-29 | 2011-08-03 | 北京普析通用仪器有限责任公司 | Installation debugging method of continuously variable slit mechanism |
| CN206601185U (en) * | 2016-11-21 | 2017-10-31 | 天津市拓普仪器有限公司 | Spectrophotometer with it is parallel linkage displacement slit mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110006528A (en) * | 2017-12-20 | 2019-07-12 | 耶拿分析仪器股份公司 | Spectrometer device, the method and optical component group for generating two-dimension spectrum |
| CN110006528B (en) * | 2017-12-20 | 2021-08-31 | 耶拿分析仪器有限公司 | Spectrometer arrangement, method for generating a two-dimensional spectrum and optical component set |
| CN115560851A (en) * | 2022-09-22 | 2023-01-03 | 上海元析仪器有限公司 | Automatic slit changing device for spectrometer capable of spatial filtering |
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