CN201946190U - Experimental apparatus for diffraction of light - Google Patents
Experimental apparatus for diffraction of light Download PDFInfo
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- CN201946190U CN201946190U CN2010201446661U CN201020144666U CN201946190U CN 201946190 U CN201946190 U CN 201946190U CN 2010201446661 U CN2010201446661 U CN 2010201446661U CN 201020144666 U CN201020144666 U CN 201020144666U CN 201946190 U CN201946190 U CN 201946190U
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- 238000002474 experimental method Methods 0.000 claims description 15
- 238000001228 spectrum Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model belongs to computer-aided instruction experimental equipment and particularly relates to an experimental apparatus for diffraction of light. The experimental apparatus consists of a diffraction device and a data acquiring card microcomputer, wherein the diffraction device consists of a laser generator, a lens, a raster, a lens and a linear array charge coupled device (CCD); and the laser runs through a slit, the lens, the raster and the lens to reach the linear array CCD to generate stripes. While a processing software for experimental data and images programmed by visual basic (VB) is written in a data acquiring card. Spectrums are collected by the linear array CCD, and the experimental data are analyzed and processed by an experimental software written by VB. As the CCD has the advantages of high precision, fast response time, strong anti-interference capability and the like and replaces a traveling microscope, students can observe the light intensity distribution of single slit diffractive stripes on a screen of the microcomputer in real time, the visible surface is large, a plurality of persons can observe the experimental apparatus at the same moment, the operation is convenient, and the repeatability is good; and the students can know whether the adjustment is in place while adjusting the light path and simultaneously observing the waveform displayed in real time on the screen. After the experimental apparatus is adjusted in place, the microcomputer can process, report and record the data required to be measured at the moment by pressing down corresponding keys simply.
Description
Technical field
The utility model belongs to the computer-aided instruction experimental facilities, specifically a kind of diffraction of light experiment instrument.
Background technology
Present most colleges and universities have all offered with single slit diffraction and have measured the light wavelength experiment, the diffraction fringe that experimental technique directly adopts travelling microscope observation to be produced by single seam mostly, the uncertainty limit value of micrometer eyepiece is 0.004mm, should notice during measurement that drum must same direction rotate, do not fall back, to avoid pitch error midway.Micrometer eyepiece observation trouble, visible surface little (synchronization can only a people narrow eyes to see), that experimental situation requires is high (can only in dark surrounds), and causes personal error easily.This experimental system is a kind of easy measuring method.Utilize line array CCD to replace travelling microscope, the redesign experimental provision directly observes the light signal that collects from CD on computers, real-time analysis, processing experimental data.Experimental result shows, improved experiment visible surface big (can observe for many people simultaneously), and to environmental requirement low (can test under bright light environments), experiment is directly perceived, convenient.Relative error is less than 6%.
The utility model content
The purpose of this utility model is to provide a kind of light distribution that can observe the single slit diffraction striped in real time on computer screen, and visible surface is big, and synchronization can be observed and diffraction of light experiment instrument easy to operate, good reproducibility for many people.
The concrete technical scheme that realizes the utility model purpose is that it is made up of diffraction instrument, data collecting card microcomputer, diffraction instrument is made up of laser generator, lens, grating, lens, the line CCD that shakes, and laser was penetrated slit, lens, grating, the lens receiving track CCD that shakes successively and gone up and produce striped.And data collecting card writes experimental data and treatment of picture software that VB writes, VB software comprised in have the collection interference fringe image, regulate the size of screen frame, adopt PictureClip1 to choose, shear the also interference fringe image of amplifier section, utilize the coordinate scale interference fringe image to amplifier section on computer screen on the multiplying arrangement to calibrate, interference fringe image to amplifier section carries out gray scale and binary conversion treatment, calculate diffraction fringe separation delta X voluntarily by computing machine VB software then, go out final sodium light wavelength by computed in software at last.
A kind of diffraction of light experiment instrument of the present utility model utilizes line array CCD to gather spectrum, by the experiment software that VB writes analysis of experimental data is handled.Because CCD has advantages such as precision height, the response time is fast, antijamming capability is strong, replace travelling microscope with it, the student can observe the light distribution of single slit diffraction striped in real time on computer screen, visible surface is big, synchronization can be observed and easy to operate, good reproducibility for many people, the student regulates light path on one side, the real-time waveform that shows is just known whether adjusted putting in place on the view screen of one side. after adjusting puts in place, can allow Computer Processing also report and write down the data of required measurement this moment by correspondent button simply.Characteristics: (1) experiment does not need to carry out in the darkroom, need not allow the student narrow eyes read data from micrometer eyepiece painstakingly yet, and whole experiment is simple and clear, and is convenient; (2) student operates, regulates experimental provision on one side, can in real time on computer screen very intuitively see the data that need measurement on one side; (3) student can make laboratory report in system, and the teacher can correct laboratory report in system.
Description of drawings
Fig. 1 utilizes the line device synoptic diagram of CCD to slit diffraction experiment that shake
Fig. 2 is the software flow pattern of the utility model embodiment
Embodiment
Below in conjunction with embodiment the utility model is further described, but the utility model also is not limited only to the content of embodiment.
As depicted in figs. 1 and 2, diffraction of light experiment instrument of the present utility model is made up of diffraction instrument, data collecting card microcomputer, diffraction instrument is made up of laser generator, lens, grating, lens, the line CCD that shakes, and laser was penetrated slit, lens, grating, the lens receiving track CCD that shakes successively and gone up and produce striped.And data collecting card writes experimental data and treatment of picture software that VB writes, VB software comprised in have the collection interference fringe image, regulate the size of screen frame, adopt PictureClip1 to choose, shear the also interference fringe image of amplifier section, utilize the coordinate scale interference fringe image to amplifier section on computer screen on the multiplying arrangement to calibrate, interference fringe image to amplifier section carries out gray scale and binary conversion treatment, calculate diffraction fringe separation delta X voluntarily by computing machine VB software then, go out final sodium light wavelength by computed in software at last.
By VB programming compiling corresponding software programs.Mentality of designing is shown in Fig. 2 software flow pattern.
Utilize line array CCD to gather spectrum, analysis of experimental data is handled by the experiment software that VB writes.Because CCD has advantages such as precision height, the response time is fast, antijamming capability is strong, replace travelling microscope with it, the student can observe the light distribution of single slit diffraction striped in real time on computer screen, visible surface is big, synchronization can be observed and easy to operate, good reproducibility for many people, the student regulates light path on one side, the real-time waveform that shows is just known whether adjusted putting in place on the view screen of one side. after adjusting puts in place, can allow Computer Processing also report and write down the data of required measurement this moment by correspondent button simply.Characteristics: (1) experiment does not need to carry out in the darkroom, need not allow the student narrow eyes read data from micrometer eyepiece painstakingly yet, and whole experiment is simple and clear, and is convenient; (2) student operates, regulates experimental provision on one side, can in real time on computer screen very intuitively see the data that need measurement on one side; (3) student can make laboratory report in system, and the teacher can correct laboratory report in system.
Embodiment
This experimental system need be built perfect index path, and writes corresponding software by VB.
(1) produces the line array CCD that meets the demands according to above requirement.
(2) use sodium lamp, single seam, lens, line array CCD builds the index path that satisfies the above-mentioned requirements position on optical table.
(3) by the VB programming, the software that above-mentioned functions is satisfied in compiling.
(4) connect each hardware, software is tested.
Claims (1)
1. diffraction of light experiment instrument, it is characterized in that: it is made up of diffraction instrument, data collecting card microcomputer, diffraction instrument is made up of laser generator, lens, grating, lens, the line CCD that shakes, and laser was penetrated slit, lens, grating, the lens receiving track CCD that shakes successively and gone up and produce striped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201446661U CN201946190U (en) | 2010-03-30 | 2010-03-30 | Experimental apparatus for diffraction of light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201446661U CN201946190U (en) | 2010-03-30 | 2010-03-30 | Experimental apparatus for diffraction of light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201946190U true CN201946190U (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201446661U Expired - Fee Related CN201946190U (en) | 2010-03-30 | 2010-03-30 | Experimental apparatus for diffraction of light |
Country Status (1)
| Country | Link |
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| CN (1) | CN201946190U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105869491A (en) * | 2016-05-17 | 2016-08-17 | 北京理工大学 | Transmission electron microscope teaching model device |
| CN105894926A (en) * | 2016-04-15 | 2016-08-24 | 北京理工大学 | Visualization transmission electron microscope demonstration device |
-
2010
- 2010-03-30 CN CN2010201446661U patent/CN201946190U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105894926A (en) * | 2016-04-15 | 2016-08-24 | 北京理工大学 | Visualization transmission electron microscope demonstration device |
| CN105894926B (en) * | 2016-04-15 | 2018-05-08 | 北京理工大学 | One kind visualization transmission electron microscope apparatus for demonstrating |
| CN105869491A (en) * | 2016-05-17 | 2016-08-17 | 北京理工大学 | Transmission electron microscope teaching model device |
| CN105869491B (en) * | 2016-05-17 | 2018-07-10 | 北京理工大学 | A kind of device of transmission electron microscope teaching mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20120330 |