CN206312481U - A kind of Poisson bright spot teaching demonstration device - Google Patents
A kind of Poisson bright spot teaching demonstration device Download PDFInfo
- Publication number
- CN206312481U CN206312481U CN201621203255.9U CN201621203255U CN206312481U CN 206312481 U CN206312481 U CN 206312481U CN 201621203255 U CN201621203255 U CN 201621203255U CN 206312481 U CN206312481 U CN 206312481U
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- Prior art keywords
- clamping
- sliding block
- slide rail
- bright spot
- optical screen
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Abstract
The utility model discloses a kind of Poisson bright spot teaching demonstration device, it is characterized in that, including the optical bench that a horizontal strip shape is set, optical bench upper surface is provided with slide rail along its length, one end of slide rail is provided with a solid state laser, sliding block for clamping diffraction plate is installed in the middle part of slide rail, there is diffraction plate for clamping on the sliding block of clamping diffraction plate, the other end of slide rail is provided with the sliding block that optical screen is shown for clamping, there is display optical screen for clamping on the sliding block of clamping display optical screen, diffraction plate is that cover glass one steel ball of interior clamping that two pieces of two ends are fixed is obtained, the solid state laser front end is removably provided with focusing lens, and be located in same horizontal line in the middle part of focusing lens and steel ball and display optical screen.The utility model has simple structure, beneficial to adjustment, imaging clearly, the advantage that can preferably demonstrate Poisson bright spot to improve the quality of teaching.
Description
Technical field
The utility model is related to a kind of physical teaching aid；More particularly to a kind of Poisson bright spot teaching demonstration device.
Background technology
When monochromatic light exposure is in small circular plate or ball of the width less than or equal to optical source wavelength, on optical screen that can be after
There is the diffraction fringe of the concentric circles each other of ring-type, and circle centre position in all concentric circles occurs a minimum speck,
This speck is thus referred to as " Poisson bright spot "." Poisson bright spot " is one of most representational phenomenon of fluctuation of light.It is formed
Reason is that the phase of wavelet is identical because light wave bypasses the edge of ball or plectane when the center of shadow region is superimposed, therefore
Center is presented bright rays.
In middle school's physics experiment teaching, aperture or slit are all passed through using collimated laser beam, i.e., using fraunhofer
The mode of diffraction produces more clearly diffraction pattern；But when laser is passed through the less barrier of dimension using which, but
Can not produce clearly " Poisson bright spot ", understanding of the student to Poisson bright spot also can only be by the picture on textbook.
Therefore how designing one kind can preferably demonstrate Poisson bright spot, make its simple structure, beneficial to adjustment, imaging clearly,
Improve the quality of teaching, as the problem for having considered solution.
Utility model content
For above-mentioned the deficiencies in the prior art, the technical problem that the utility model is primarily solved is：How a kind of knot is provided
Structure is simple, and beneficial to adjustment, imaging clearly, the Poisson bright spot teaching that can preferably demonstrate Poisson bright spot to improve the quality of teaching is drilled
Showing device.
In order to solve the above-mentioned technical problem, the utility model employs following technical scheme：
A kind of Poisson bright spot teaching demonstration device, it is characterised in that including the optical bench that a horizontal strip shape is set, light
Tool seat upper surface is provided with slide rail along its length, and one end of slide rail is provided with a solid state laser, and the middle part of slide rail is installed
There is the sliding block for clamping diffraction plate, the other end for having diffraction plate, slide rail for clamping on the sliding block of clamping diffraction plate is provided with
The sliding block of optical screen is shown for clamping, has display optical screen for clamping on the sliding block of clamping display optical screen, diffraction plate is two piece two
One steel ball of clamping in fixed cover glass is held to obtain, the solid state laser front end is removably provided with focusing lens, and
Focusing lens and steel ball and display optical screen middle part are located in same horizontal line.
So, when the present apparatus is used for pilot demonstration, by display optical screen as optical screen, or display optical screen can be removed by religion
The wall of room opens solid state laser as optical screen, by the regulation to sliding block distance, the monochromatic light for projecting solid state laser
Line is converged and again after diverging by steel ball, you can Poisson bright spot is shown on optical screen by focusing lens through focusing lens；
Lower focusing lens, the poisson bright spot that can be produced with demonstration of parallelism light are dismantled simultaneously.Therefore the present apparatus has simple structure, it is beneficial to
Adjustment, can show various incident angles incident light produce Poisson bright spot the advantages of.Diffraction plate is what two pieces of two ends were fixed
One steel ball of clamping is obtained in cover glass, the transparent high and thick degree very little of cover glass, therefore its influence to light path is negligible, make its into
As clear.
Used as optimization, optical bench is arranged on a base in which can horizontally rotate.So, the level of convenient adjustment optical bench
Direction, is imaged its alignment optical screen.
Used as optimization, the solid state laser lower section is provided with an adjustable installing platform, and adjustable installing platform lower end is consolidated
It is scheduled on optical bench, solid state laser is arranged on adjustable installing platform, adjustable installing platform side is provided with can for regulation
The height adjustment knob of mode erecting bed upper end installation position adjustable height and for adjusting adjustable erecting bed upper end installation portion
The translational adjustment knob of position right position.
So, can preferably facilitate what alignment can also facilitate display light source when height and position and right position change
Imaging situation of change so that hot spot moves display on optical screen, to improve demonstration validity.
As optimization, graduation mark is also provided with along the length direction on the optical bench side surface.So, convenient record sliding block
Position, reads test data, and experimental implementation can be more quickly completed when also allowing for using next time.
Used as optimization, there is Section Space to constitute slide rail, the sliding block in the chute of convex shape for the optical bench upper surface
Lower end is slideably engaged by clamping in chute, up/down perforation is gone back on sliding block and is provided with locking screw, matches somebody with somebody in locking screw
Conjunction has locking stud, and locking stud upper end is exposed sliding block and is connected with handle composition locking knob.
So, the regulation of the more steady reliability that is slidably matched of sliding block and optical bench, and sliding block longitudinal separation facilitates afterwards in place
Rapidly it is locked.
In sum, the utility model has simple structure, and beneficial to adjustment, imaging clearly can preferably demonstrate Poisson
Advantage of the speck to improve the quality of teaching.
Brief description of the drawings
Fig. 1 is a kind of structure schematic diagram of preferred embodiment of the present utility model.
Fig. 2 is the schematic diagram in independent optical bench section in Fig. 1.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
During specific implementation：As shown in Figure 1-2, a kind of Poisson bright spot teaching demonstration device, an including horizontal strip shape sets
The optical bench 1 put, the upper surface of optical bench 1 is provided with slide rail 12 along its length, and one end of slide rail 12 is provided with a solid and swashs
Light device 2, is provided with the sliding block for clamping diffraction plate 3 in the middle part of slide rail, have diffraction for clamping on the sliding block of clamping diffraction plate 3
Piece 3, the other end of slide rail is provided with the sliding block that optical screen 4 is shown for clamping, has for clamping on the sliding block of clamping display optical screen 4
Display optical screen 4, diffraction plate 3 is that cover glass one steel ball 5 of interior clamping that two pieces of two ends are fixed is obtained, before the solid state laser 2
End is removably provided with focusing lens 7, and focusing lens 7 and steel ball 5 and the middle part of display optical screen 4 are located at same horizontal line
On.
So, when the present apparatus is used for pilot demonstration, by display optical screen as optical screen, or display optical screen can be removed by religion
The wall of room is used as optical screen（Wall can cause that diffraction pattern is bigger as optical screen, more conducively show observation）, open solid and swash
Light device, by the regulation to sliding block distance, makes the monochromatic light that solid state laser is projected by focusing lens, is converged through focusing lens
Coalescence dissipate again after by steel ball, you can Poisson bright spot is shown on optical screen；Lower focusing lens are dismantled simultaneously, can be demonstrated
The poisson bright spot that directional light is produced.Therefore the present apparatus has simple structure, beneficial to adjustment, various incident angles can be shown
The advantages of Poisson bright spot that incident light is produced.Diffraction plate is that cover glass one steel ball of interior clamping that two pieces of two ends are fixed is obtained, and is covered
The transparent high and thick degree very little of slide, therefore its influence to light path is negligible, makes its imaging clearly.During implementation, focusing lens 7 and solid
Can being spun by screw thread between body laser 2, realization is detachable to install.
Wherein, optical bench 1 is arranged on a base 6 in which can horizontally rotate.So, the level side of convenient adjustment optical bench
To, make its alignment optical screen be imaged.
Wherein, the lower section of the solid state laser 2 is provided with an adjustable installing platform 8, and the lower end of adjustable installing platform 8 is fixed
On optical bench 1, solid state laser 2 is arranged on adjustable installing platform 8, and the side of adjustable installing platform 8 is provided with for adjusting
The height adjustment knob 9 of adjustable installing platform upper end installation position adjustable height and for adjust adjustable erecting bed upper end install
The translational adjustment knob 10 of position right position.
So, can preferably facilitate what alignment can also facilitate display light source when height and position and right position change
Imaging situation of change so that hot spot moves display on optical screen, to improve demonstration validity.
During implementation, adjustable installing platform can use the existing lifting platform structure with lifting and left and right adjusting function,
Or following structure is used, adjustable installing platform includes that a fixed pedestal is used to be fixedly connected with optical bench, pedestal
Vertical rack is set in upper setting vertical guide and the vertically slidable cooperation intermediate of intermediate and one same with height adjustment knob
The height regulation meshed transmission gear that axle is fixed, realizes that height is adjusted；Then a top board is set above intermediate again to constitute
Installation position for installing solid state laser, sets mounting hole and installs fixed laser, top board by screw to facilitate on top board
Be slidably matched by the cross slide way that sets in left-right direction and intermediate between, set again on top board horizontal tooth bar and one with
The co-axially fixed translational adjustment meshed transmission gear of translational adjustment knob, the height adjusts gear and translational adjustment gear
Rotationally it is installed on the shell fixed with pedestal.So, the structure structure, and can realize adjusting work(well
Can, it is ensured that regulation is quick reliable and stable.
Wherein, graduation mark 11 is also provided with along its length on the side surface of the optical bench 1.So, convenient record sliding block
Position, reads test data, and experimental implementation can be more quickly completed when also allowing for using next time.
Wherein, there is the upper surface of the optical bench 1 Section Space to constitute slide rail 12 in the chute of convex shape, under the sliding block
End is slideably engaged by clamping in chute, up/down perforation is gone back on sliding block and is provided with cooperation in locking screw, locking screw
There is locking stud 13, locking stud 13 upper end is exposed sliding block and is connected with handle composition locking knob.
So, the regulation of the more steady reliability that is slidably matched of sliding block and optical bench, and sliding block longitudinal separation facilitates afterwards in place
Rapidly it is locked.
Claims (5)
1. a kind of Poisson bright spot teaching demonstration device, it is characterised in that including the optical bench that a horizontal strip shape is set, light tool
Seat upper surface is provided with slide rail along its length, and one end of slide rail is provided with a solid state laser, is provided with the middle part of slide rail
For the sliding block of clamping diffraction plate, the other end for having diffraction plate, slide rail for clamping on the sliding block of clamping diffraction plate is provided with use
The sliding block of optical screen is shown in clamping, has display optical screen for clamping on the sliding block of clamping display optical screen, diffraction plate is two pieces of two ends
One steel ball of clamping is obtained in fixed cover glass, and the solid state laser front end is removably provided with focusing lens, and adjusts
Zoom lens and steel ball and display optical screen middle part are located in same horizontal line.
2. Poisson bright spot teaching demonstration device as claimed in claim 1, it is characterised in that optical bench is installed in which can horizontally rotate
On a base.
3. Poisson bright spot teaching demonstration device as claimed in claim 1, it is characterised in that the solid state laser lower section is set
There is an adjustable installing platform, adjustable installing platform lower end is fixed on optical bench, solid state laser is arranged on adjustable installing
On platform, the height that adjustable installing platform side is provided with for adjusting adjustable installing platform upper end installation position adjustable height is adjusted
Knob and the translational adjustment knob for adjusting adjustable erecting bed upper end installation position right position.
4. Poisson bright spot teaching demonstration device as claimed in claim 1, it is characterised in that also suitable on the optical bench side surface
Length direction is provided with graduation mark.
5. Poisson bright spot teaching demonstration device as claimed in claim 1, it is characterised in that the optical bench upper surface has to be cut
Space of planes constitutes slide rail in the chute of convex shape, and the sliding block lower end is slideably engaged by clamping in chute, is also gone up on sliding block
Lower insertion is provided with locking screw, and locking stud is combined with locking screw, and locking stud upper end is exposed sliding block and connected
There is handle to constitute locking knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621203255.9U CN206312481U (en) | 2016-11-08 | 2016-11-08 | A kind of Poisson bright spot teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621203255.9U CN206312481U (en) | 2016-11-08 | 2016-11-08 | A kind of Poisson bright spot teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206312481U true CN206312481U (en) | 2017-07-07 |
Family
ID=59244939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621203255.9U Expired - Fee Related CN206312481U (en) | 2016-11-08 | 2016-11-08 | A kind of Poisson bright spot teaching demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206312481U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978211A (en) * | 2017-12-29 | 2018-05-01 | 南京惊兰谷根自动化科技有限公司 | A kind of physics teaching experiment auxiliary device |
-
2016
- 2016-11-08 CN CN201621203255.9U patent/CN206312481U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978211A (en) * | 2017-12-29 | 2018-05-01 | 南京惊兰谷根自动化科技有限公司 | A kind of physics teaching experiment auxiliary device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20191108 |