CN106404172A - Parallel linkage displacement slit mechanism for spectrophotometer - Google Patents
Parallel linkage displacement slit mechanism for spectrophotometer Download PDFInfo
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- 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
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 7
- 230000007246 mechanism Effects 0.000 title claims abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 230000003595 spectral effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000001228 spectrum Methods 0.000 description 2
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- 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
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Abstract
本发明提供一种分光光度计用平行联动位移狭缝机构，包括步进电机、齿轮、凸轮、拨杆转板和狭缝片，所述的步进电机的输出轴上设有第一齿轮，第一齿轮与从动杆上的第二齿轮啮合，从动杆上还设有凸轮，凸轮与拨杆转板之间通过始终与其二者相抵的拨轮进行联动，所述的拨杆转板上设有一个旋转轴，旋转轴的上下两侧对称的设有第一狭缝片拨杆和第二狭缝片拨杆，两个狭缝片拨杆分别与第一狭缝片和第二狭缝片下部的缺口相配合。本发明与现有技术相比具有显著的优点和有益效果：实现了在不同的波数位置具有相应的狭缝宽度，而且实现了狭缝宽度的倍率变换，极大的提高了光度计的精确性和操作便捷度。
The invention provides a parallel linkage displacement slit mechanism for a spectrophotometer, which includes a stepping motor, a gear, a cam, a lever rotating plate and a slit piece, the output shaft of the stepping motor is provided with a first gear, The first gear meshes with the second gear on the driven rod, and the driven rod is also provided with a cam, and the cam and the lever rotating plate are linked through the dial wheel that is always against the two, and the driving lever rotating plate There is a rotating shaft on the top, and the upper and lower sides of the rotating shaft are symmetrically provided with a first slit driving lever and a second slit driving lever, and the two slit driving levers are respectively connected with the first slit and the second The gap in the lower part of the slit sheet matches. Compared with the prior art, the present invention has significant advantages and beneficial effects: it realizes the corresponding slit width at different wavenumber positions, and realizes the magnification transformation of the slit width, which greatly improves the accuracy of the photometer and ease of operation.
Description
技术领域technical field
本发明涉及光学仪器领域，具体涉及一种分光光度计用平行联动位移狭缝机构。The invention relates to the field of optical instruments, in particular to a parallel linkage displacement slit mechanism for a spectrophotometer.
背景技术Background technique
光栅也称衍射光栅，是利用多缝原理使光发生色散的光学元件，它是一块刻有大量平行等宽、等距狭缝的平面玻璃或金属片。光栅的狭缝数量很大，一般每毫米几十至几千条。单色平行光通过光栅每个缝的衍射和各缝间的干涉，形成暗条纹很宽、明条纹很细的图样，这些锐细而明亮的条纹称作谱线，谱线的位置随波长而异，当复色光通过光栅后，不同波长的谱线在不同的位置出现而形成光谱。光通过光栅形成光谱是单缝衍射和多缝干涉的共同结果。光栅一般与分光计配合使用。现有的分光光度计中两个狭缝片无法实现联动，从而无法实现不同的波数位置具有不同狭缝宽度的要求，给分光计的使用带来了很多不便。Grating, also known as diffraction grating, is an optical element that uses the principle of multiple slits to disperse light. It is a piece of flat glass or metal sheet engraved with a large number of parallel equal-width and equidistant slits. The number of slits in the grating is very large, generally tens to thousands of slits per millimeter. The monochromatic parallel light passes through the diffraction of each slit of the grating and the interference between the slits, forming a pattern with wide dark fringes and thin bright fringes. These sharp, thin and bright fringes are called spectral lines, and the position of the spectral lines varies with the wavelength. Differently, when the polychromatic light passes through the grating, the spectral lines of different wavelengths appear in different positions to form a spectrum. The spectrum formed by light passing through the grating is the common result of single-slit diffraction and multi-slit interference. Gratings are generally used in conjunction with spectrometers. In the existing spectrophotometer, the two slits cannot be linked, so that different wavenumber positions have different slit widths, which brings a lot of inconvenience to the use of the spectrometer.
发明内容Contents of the invention
本发明所要解决的问题在于克服现有技术的不足，提供可以精确调节狭缝的宽度及倍率变换的分光光度计用平行联动位移狭缝机构。The problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a parallel linkage displacement slit mechanism for a spectrophotometer that can precisely adjust the width of the slit and transform the magnification.
本发明解决其技术问题是采取以下技术方案实现的：The present invention solves its technical problem and realizes by taking the following technical solutions:
一种分光光度计用平行联动位移狭缝机构，包括步进电机、齿轮、凸轮、拨杆转板和狭缝片，所述的步进电机的输出轴上设有第一齿轮，第一齿轮与从动杆上的第二齿轮啮合，从动杆上还设有凸轮，凸轮与拨杆转板之间通过始终与其二者相抵的拨轮进行联动，所述的拨杆转板上设有一个旋转轴，旋转轴的上下两侧对称的设有第一狭缝片拨杆和第二狭缝片拨杆，两个狭缝片拨杆分别与第一狭缝片和第二狭缝片下部的缺口相配合。A parallel linkage displacement slit mechanism for a spectrophotometer, comprising a stepping motor, a gear, a cam, a lever rotating plate and a slit piece, the output shaft of the stepping motor is provided with a first gear, the first gear It meshes with the second gear on the driven lever, and the driven lever is also equipped with a cam, and the cam and the lever rotating plate are linked through the dial wheel that always resists the two. The lever rotating plate is provided with A rotating shaft, the upper and lower sides of the rotating shaft are symmetrically provided with a first slit lever and a second slit lever, and the two slit levers are connected with the first slit and the second slit respectively. The lower notch matches.
本发明的工作原理：光度计的数据处理单元在控制仪器进行波数扫描的同时，不断发出指令控制狭缝步进电机的的转角，通过狭缝凸轮的矢径变化，从而改变狭缝的宽度，这样，就实现了在不同的波数位置具有相应的狭缝宽度的要求，另外，仪器通过程序预置步进电机具有不同的起始转角，实现了狭缝宽度的倍率变换。The working principle of the present invention: while the data processing unit of the photometer is controlling the instrument to perform wavenumber scanning, it continuously sends instructions to control the rotation angle of the slit stepping motor, and changes the slit width through the change of the vector of the slit cam. In this way, the requirements of having corresponding slit widths at different wavenumber positions are realized. In addition, the instrument presets stepping motors with different initial rotation angles through the program to realize the magnification conversion of the slit width.
本发明与现有技术相比具有显著的优点和有益效果：实现了在不同的波数位置具有相应的狭缝宽度，而且实现了狭缝宽度的倍率变换，极大的提高了光度计的精确性和操作便捷度。Compared with the prior art, the present invention has significant advantages and beneficial effects: it realizes the corresponding slit width at different wavenumber positions, and realizes the magnification transformation of the slit width, which greatly improves the accuracy of the photometer and ease of operation.
附图说明Description of drawings
图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.
具体实施方式detailed description
以下结合附图及较佳实施例，对依据本发明提供的具体实施方式、结构、特征及其功效，详细说明如后。The specific implementation, structure, features and effects provided by the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
如图1所示的一种分光光度计用平行联动位移狭缝机构，包括带50：1变速箱的步进电机1、齿轮2、凸轮4、拨杆转板6和狭缝片，所述的步进电机1的输出轴21上设有第一齿轮2，第一齿轮与从动杆31上的第二齿轮3啮合，从动杆31上还设有凸轮4，凸轮4与拨杆转板6之间通过始终与其二者相抵的拨轮5进行联动，所述的拨杆转板上设有一个旋转轴62，旋转轴的上下两侧对称的设有第一狭缝片拨杆61和第二狭缝片拨杆63，两个狭缝片拨杆分别与第一狭缝片8和第二狭缝片7下部的缺口9相配合。As shown in Figure 1, a parallel linkage displacement slit mechanism for a spectrophotometer includes a stepper motor 1 with a 50:1 gearbox, a gear 2, a cam 4, a lever rotating plate 6 and a slit sheet, the The output shaft 21 of the stepping motor 1 is provided with a first gear 2, the first gear meshes with the second gear 3 on the driven lever 31, and the driven lever 31 is also provided with a cam 4, which rotates with the driving lever. The plates 6 are linked by the dial wheel 5 which is always in contact with the two. A rotating shaft 62 is arranged on the shifting lever rotating plate, and a first slit driving rod 61 is symmetrically arranged on the upper and lower sides of the rotating shaft. And the second slit driving lever 63, two slit driving levers cooperate with the breach 9 of the first slit 8 and the second slit 7 bottom respectively.
本发明的工作原理：光度计的数据处理单元在控制仪器进行波数扫描的同时，不断发出指令控制狭缝步进电机的的转角，通过狭缝凸轮的矢径变化，从而改变狭缝的宽度，这样，就实现了在不同的波数位置具有相应的狭缝宽度的要求，另外，仪器通过程序预置步进电机具有不同的起始转角，实现了狭缝宽度的倍率变换。The working principle of the present invention: while the data processing unit of the photometer is controlling the instrument to perform wavenumber scanning, it continuously sends instructions to control the rotation angle of the slit stepping motor, and changes the slit width through the change of the vector of the slit cam. In this way, the requirements of having corresponding slit widths at different wavenumber positions are realized. In addition, the instrument presets stepping motors with different initial rotation angles through the program to realize the magnification conversion of the slit width.
通过过度回程再切入方法消除机械回程误差。Eliminate mechanical backstroke error by over-return re-staging method.
以上对本发明的一个实施例进行了详细说明，但所述内容仅为本发明的较佳实施例，不能被认为用于限定本发明的实施范围。凡依本发明申请范围所作的均等变化与改进等，均应仍归属于本发明的专利涵盖范围之内。An embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention, and cannot be considered as limiting the implementation scope of the present invention. All equivalent changes and improvements made according to the application scope of the present invention shall still belong to the scope covered by the patent of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611018816.2A CN106404172A (en) | 2016-11-21 | 2016-11-21 | Parallel linkage displacement slit mechanism for spectrophotometer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611018816.2A CN106404172A (en) | 2016-11-21 | 2016-11-21 | Parallel linkage displacement slit mechanism for spectrophotometer |
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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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