CN213874676U

CN213874676U - Laser wavelength measurement experiment teaching device

Info

Publication number: CN213874676U
Application number: CN202023134661.3U
Authority: CN
Inventors: 吴波; 陈振霖; 陈明
Original assignee: Guoyi Xingyun Hefei Education Technology Co ltd
Current assignee: Guoyi Xingyun Hefei Education Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-03
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a laser wavelength measurement experiment teaching device belongs to laser surveying technical field, guide rail including the tripod support, install a plurality of sliding support frame on the guide rail, every install observation screen, laser light source and diffraction grating on the sliding support frame in proper order, make sliding support frame is in the removal in-process, adjusts the observation screen laser light source with interval between the diffraction grating, set up the graduation apparatus on the guide rail for measure the numerical value of interval. Through will survey screen, laser source and diffraction grating and install on can be on the gliding sliding support frame of guide rail to have the graduation apparatus on the guide rail, the interval between the sliding support frame can audio-visually reflect, thereby make things convenient for the accurate adjustment of teacher to survey the position of screen, laser source and diffraction grating, need not secondary measurement interval distance, not only improved calculation efficiency, measured laser wavelength is more accurate moreover.

Description

Laser wavelength measurement experiment teaching device

Technical Field

The utility model relates to a laser surveying technical field, in particular to laser wavelength measurement experiment teaching device.

Background

With the development of laser technology, laser is visible everywhere in life and plays a greater and greater role in modern life, and for the measurement of wavelength in experimental teaching, the wavelength value can be accurately obtained by using precision instruments such as a spectrometer, a Michelson interferometer and the like. However, these measuring instruments are expensive and complex to operate, and their use is limited in ordinary teaching experiments, so most laser wavelength experiments are completed by simple equipment, and generally consist of a laser pen, an article capable of generating diffraction, and an observation screen. And calculating the wavelength of the laser by combining the peak distance of the diffracted light measured on the observation screen through a fixed angle and distance.

But the instrument that traditional laser wavelength measurement experiment used all is scattered independence, and the wholeness is relatively poor, and the ripple scope in order to guarantee the diffraction is great, needs to make the interval between laser source and the observation screen lengthen, leads to whole experiment teaching equipment volume grow, owing to lack and measure the scale, can't accurate quick removal to suitable position when adjusting the interval to still need the interval between the measuring tool once more after the removal, measurement of efficiency is lower and accurate inadequately.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is bulky just in order to solve the teaching device that above-mentioned laser wavelength measurement experiment used, adjusts accurate inadequately, and measurement of efficiency is low and accurate problem inadequately and provide a laser wavelength measurement experiment teaching device, has compact structure, and small in size can accurately adjust the interval of each instrument, raises the efficiency, makes the more accurate advantage of measurement.

The utility model discloses a following technical scheme realizes above-mentioned purpose, a laser wavelength measurement experiment teaching device, guide rail including the tripod support, install a plurality of sliding support frame on the guide rail, every install observation screen, laser light source and diffraction grating on the sliding support frame in proper order, make the sliding support frame is in the removal in-process, adjusts the observation screen laser light source with interval between the diffraction grating, set up the graduation apparatus on the guide rail for measure the numerical value of interval.

Preferably, the guide rail comprises two parallel slide bars, and a scale is arranged on the outer wall of one slide bar.

Preferably, the sliding support frame comprises a base and a rod structure, wherein the base is provided with a through hole for movably connecting with the sliding rod.

Preferably, the rod structure is a telescopic structure and comprises a hollow rod body connected with the base, a telescopic rod body is inserted on the hollow rod body, and a locking bolt is arranged on the outer wall of the hollow rod body and used for fixing the telescopic rod body.

Preferably, a magnetic ruler is magnetically adsorbed on the observation screen.

Preferably, the laser light source is rotatably connected to the sliding support frame through a rotating block, one end of the rotating block is connected with the laser light source through a connecting bolt, and the other end of the rotating block is rotatably connected with a connecting rod fixed to the top of the sliding support frame.

Preferably, the diffraction grating is installed on the clamping block, clamping bolts for fixing the diffraction grating are installed on two sides of the clamping block, and the clamping block is fixed to the top of the sliding support frame through the connecting seat.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through will survey the screen, laser source and diffraction grating install on can be on the gliding sliding support frame of guide rail, and have the graduation apparatus on the guide rail, interval between the sliding support frame can audio-visually reflect, thereby make things convenient for accurate adjustment of teacher to survey the screen, the position of laser source and diffraction grating, need not secondary measurement interval distance, not only improved computational efficiency, and measured laser wavelength is more accurate, and laser source sets up between diffraction grating and observation screen, beat the ripple of laser diffraction on observing the screen through the diffraction grating reflection, utilize less space to realize the reflection of distance far away, make whole device compact structure, small in size.

2. The sliding support frame is of a telescopic structure, so that the angle of laser reflection can be conveniently adjusted, and the use by teachers is facilitated.

Drawings

Fig. 1 is a schematic view of the overall structure of the device of the present invention.

Fig. 2 is a schematic structural diagram of the laser wave reflection of the present invention.

Fig. 3 is a schematic view of the sliding support structure of the present invention.

Fig. 4 is the structure diagram of the observation screen of the present invention.

Fig. 5 is a schematic view of the mounting structure of the laser light source of the present invention.

Fig. 6 is a schematic view of the structure of the clamping block of the present invention.

In the figure: 1. tripod, 2, guide rail, 3, slip support frame, 4, survey screen, 5, laser light source, 6, diffraction grating, 7, base, 8, through-hole, 9, the hollow body of rod, 10, locking bolt, 11, the flexible body of rod, 12, magnetism ruler, 13, rotatory piece, 14, connecting bolt, 15, connecting rod, 16, clamp splice, 17, clamping bolt, 18, connecting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a laser wavelength measurement experiment teaching device comprises a guide rail 2 supported by a tripod 1, a plurality of sliding support frames 3 are arranged on the guide rail 2, each sliding support frame 3 is sequentially provided with an observation screen 4, a laser light source 5 and a diffraction grating 6, so that the sliding support frames 3 can adjust the distance between the observation screen 4, the laser light source 5 and the diffraction grating 6 in the moving process, the guide rail 2 is provided with a scale for measuring the value of the distance, the sliding support frames 3 slide on the guide rail 2 to change the distance between the observation screen 4, the laser light source 5 and the diffraction grating 6, the scale on the guide rail 2 can facilitate teachers to determine the accurate distance when moving the observation screen 4, the laser light source 5 and the diffraction grating 6, in the experiment, as shown in fig. 2, laser light is irradiated on the diffraction grating 6 through the laser light source 5, the diffraction grating 6 reflects light to the observation screen 4, through measuring the ripple length on observing the screen 4, calculate the wavelength of laser, because laser passes through diffraction grating 6's reflection earlier, consequently lengthened the distance that laser passed through greatly for ripple length grow is convenient calculation more, thereby makes and observes that the interval need not too big between screen 4, laser light source 5 and the diffraction grating 6, also can be convenient for measure the wavelength of laser.

As shown in fig. 3, the guide rail 2 includes two parallel slide bars, and a scale is disposed on an outer wall of one of the slide bars, the sliding support frame 3 includes a base 7 and a bar structure, wherein the base 7 is provided with a through hole 8 for movably connecting with the slide bar, the base 7 can slide on the two parallel slide bars through the through hole 8 for adjusting the distance between the observation screen 4, the laser source 5 and the diffraction grating 6, the bar structure is a telescopic structure and includes a hollow bar body 9 connected with the base 7, the hollow bar body 9 is inserted with a telescopic bar body 11, and the outer wall of the hollow bar body 9 is provided with a locking bolt 10 for fixing the telescopic bar body 11, the telescopic bar body 11 can be telescopic to adjust the heights of the observation screen 4, the laser source 5 and the diffraction grating 6 mounted thereon, after the adjustment is completed, the locking bolt 10 is screwed to fix the telescopic bar body 11, and when the height needs to be adjusted, and the locking bolt 10 is unscrewed for adjustment, so that a teacher can conveniently adjust a proper angle.

As shown in fig. 4, there is magnetism ruler 12 through magnetic adsorption on observing the screen 4, and magnetism ruler 12 of measuring ripple length can adsorb on observing the screen 4, and accomodating when conveniently not using avoids magnetism ruler 12 to lose.

As shown in fig. 5, the laser light source 5 is rotatably connected to the sliding support frame 3 through the rotating block 13, one end of the rotating block 13 is connected to the laser light source 5 through the connecting bolt 14, the other end of the rotating block 13 is rotatably connected to the connecting rod 15 fixed at the top of the sliding support frame 3, and the inclination angle of the laser light source 5 is conveniently adjusted through the rotating block 13, so that the reflection of the diffraction grating 6 is satisfied.

As shown in fig. 6, the diffraction grating 6 is mounted on the clamping block 16, the clamping bolts 17 for fixing the diffraction grating 6 are mounted on two sides of the clamping block 16, the clamping block 16 is fixed on the top of the sliding support frame 3 through the connecting seat 18, the clamping block 16 is used for clamping and fixing the diffraction grating 6, and the clamping bolts 17 are used for facilitating the mounting and dismounting of the diffraction grating 6.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a laser wavelength measures experiment teaching device, its characterized in that, guide rail (2) including tripod (1) support, install a plurality of sliding support frame (3) on guide rail (2), every install observation screen (4), laser source (5) and diffraction grating (6) in proper order on sliding support frame (3), make sliding support frame (3) are at the removal in-process, adjust observe screen (4) laser source (5) with interval between diffraction grating (6), set up the graduation apparatus on guide rail (2) for measure the numerical value of interval.

2. The laser wavelength measurement experiment teaching device according to claim 1, wherein the guide rail (2) comprises two parallel slide bars, and a scale is arranged on an outer wall of one of the slide bars.

3. The laser wavelength measurement experiment teaching device according to claim 2, wherein the sliding support frame (3) comprises a base (7) and a rod structure, wherein the base (7) is provided with a through hole (8) for movably connecting with the sliding rod.

4. The laser wavelength measurement experiment teaching device according to claim 3, wherein the rod structure is a telescopic structure and comprises a hollow rod body (9) connected with the base (7), the telescopic rod body (11) is inserted into the hollow rod body (9), and a locking bolt (10) is arranged on the outer wall of the hollow rod body (9) and used for fixing the telescopic rod body (11).

5. The laser wavelength measurement experiment teaching device as claimed in claim 1, wherein a magnetic ruler (12) is magnetically attracted on the observation screen (4).

6. The laser wavelength measurement experiment teaching device as claimed in claim 1, wherein the laser light source (5) is rotatably connected to the sliding support frame (3) through a rotating block (13), one end of the rotating block (13) is connected to the laser light source (5) through a connecting bolt (14), and the other end of the rotating block is rotatably connected to a connecting rod (15) fixed to the top of the sliding support frame (3).

7. The laser wavelength measurement experiment teaching device according to claim 1, wherein the diffraction grating (6) is mounted on a clamping block (16), clamping bolts (17) for fixing the diffraction grating (6) are mounted on two sides of the clamping block (16), and the clamping block (16) is fixed on the top of the sliding support frame (3) through a connecting seat (18).