CN208938465U - A kind of interference of light, diffraction and polarization demonstration device - Google Patents
A kind of interference of light, diffraction and polarization demonstration device Download PDFInfo
- Publication number
- CN208938465U CN208938465U CN201820828723.4U CN201820828723U CN208938465U CN 208938465 U CN208938465 U CN 208938465U CN 201820828723 U CN201820828723 U CN 201820828723U CN 208938465 U CN208938465 U CN 208938465U
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- China
- Prior art keywords
- light
- diffraction
- sliding block
- interference
- light source
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Abstract
The utility model discloses a kind of interference of light in instruments used for education field, diffraction and polarization demonstration device, including light source, beam expanding lens, focus lamp, single seam baffle, double-slit baffle and optical screen, the light source, beam expanding lens, focus lamp, single seam baffle, double-slit baffle and optical screen are mounted on guide rail by multiple sliding blocks, sliding block can be slided along guide rail, the light room for offering light inlet on one side is also equipped on sliding block, power supply is provided in the light room, power supply and photo resistance, light emitting diode and switch series connection, it is provided with two pieces of polarizing films at light inlet and face light source is arranged；The polarization experiment of light can be visually carried out very much, and is not necessarily to hand-held instrument, will not arm be ached, the demonstration operation of very convenient experiment, the utility model can be used for the demonstration of physics teaching.
Description
Technical field
The utility model relates to instruments used for education, in particular to a kind of demonstration device of light.
Background technique
Currently, disclosing notification number in the prior art are as follows: 201285614Y, the day for announcing are as follows: the hand-held wave of 2009-08-05
Dynamic optical demonstration instrument.The handhold wave optical demonstrator belongs to instruments used for education field, can demonstrate the interference in wave optics, spread out
The many phenomenons penetrate, polarized are the demonstration instruments for classroom instruction.Beam expanding lens in the instrument power source 2, light source 3 and optical path
4, diffraction screen 5, focus lamp 7 form, it is characterised in that: the power supply 2, light source 3 and beam expanding lens 4 in optical path, diffraction screen 5,
Focus lamp 7 is successively placed in a metal circular tube as shell 1, and optical path is on the axis of round tube;Wherein, beam expanding lens 4 is pacified
On rotatable wheel carrier, it can realize whether be switched in optical path by rotation wheel carrier;Diffraction screen 5 is by being mounted on wheel carrier
Multiple diffraction elements are constituted, and the diffraction element in optical path can be switched by rotation wheel carrier;Focus lamp 7 is mounted on one and can be inserted in outside
In cylinder that is on shell 1 and being moved forward and backward.This instrument concentrates on the various derivatives of wave optics in diffraction screen, and can
To there is red green two kinds of light sources, it can demonstrate in wave optics and much test.But the polarization that the instrument not can be carried out light is drilled
Show, and need to be held with hand, ached for a long time using rear arm, is not easy to the demonstration operation of experiment.
Utility model content
The purpose of the utility model is to provide a kind of interference of light, diffraction and polarization demonstration device, can very visually into
The polarization experiment of row light, and it is not necessarily to hand-held instrument, will not arm be ached, the demonstration operation of very convenient experiment.
To achieve the above object, the utility model provides interference, diffraction and the polarization demonstration device of a kind of light, including light
Source, beam expanding lens, focus lamp, singly stitch baffle, double-slit baffle and optical screen, and the light source, focus lamp, singly stitches baffle, is double beam expanding lens
Seam baffle and optical screen are mounted on guide rail by multiple sliding blocks, and sliding block can be slided along guide rail, be also equipped on sliding block and opened on one side
Light room equipped with light inlet is provided with power supply in the light room, and power supply is connected with photo resistance, light emitting diode and switch,
It is provided with two pieces of polarizing films at light inlet and face light source is arranged.
Compared with prior art, the beneficial effects of the utility model are, guide rail is placed on dais, by sliding block according to
Secondary placement light source, beam expanding lens, focus lamp and light room open light source, laser is through beam expanding lens and the focus lamp of shining on guide rail
It is radiated on polarizing film after effect, keeps the polarization direction of two pieces of polarizing films vertical, then it can be seen that light emitting diode sending is micro-
Weak light rotates one of polarizing film, then it can be seen that the brightness that light emitting diode issues constantly is becoming strong, when two pieces
When the polarization direction of polarizing film is parallel to each other, the brightness of light emitting diode is maximum, can visually carry out very much the polarization experiment of light,
And it is not necessarily to hand-held instrument, will not arm be ached, the demonstration operation of very convenient experiment, the utility model can be used for object
Manage the demonstration of teaching.
Guide rail side is provided with scale as a further improvement of the utility model, and the sliding block side is provided with and carves
Spend corresponding pointer, in this way can be adjusted to precision very much when the demonstration such as interference diffraction of light wave between sliding block away from
From so that demonstration result is more acurrate.
The light source is He-Ne laser as a further improvement of the utility model, can make the hair of light source in this way
Brightness out is higher, and coherence is also more preferable, improves the effect of demonstration.
The optical screen is white reflection film as a further improvement of the utility model, can promote the anti-of optical screen in this way
Light ability enables student that can see apparent so that the effect of demonstration is more preferable.
The sliding block is adjusted bolt and is fixed with guide rail as a further improvement of the utility model, in this way when sliding block
After position is adjusted, sliding block can be made to be secured firmly on guide rail by tightening adjusting bolt, in this way the sliding block in demonstration
Position will not change, guarantee the good of demonstrating effect.
Detailed description of the invention
Fig. 1 is the utility model interference demonstration structural schematic diagram.
Fig. 2 is the utility model diffraction play configuration schematic diagram.
Fig. 3 is that the utility model polarizes play configuration schematic diagram.
Fig. 4 is circuit diagram in the utility model light room.
Fig. 5 is the utility model light room structural schematic diagram.
Wherein, 1 sliding block, 2 adjusting bolts, 3 pointers, 4 scales, 5 guide rails, 6 optical screens, 7 light sources, 8 beam expanding lens, 9 double-slit baffles,
10 focus lamps, 11 single seam baffles, 12 polarizing films, 13 light rooms, 14 light inlets.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
Interference, diffraction and the polarization demonstration device of a kind of light as shown in Figs. 1-5, a kind of interference of light, diffraction and partially
Shake demonstration device, including light source 7, beam expanding lens 8, focus lamp 10, and single baffle 11, double-slit baffle 9 and optical screen 6, light source 7 of stitching expands
Mirror 8, focus lamp 10, single seam baffle 11, double-slit baffle 9 and optical screen 6 are mounted on guide rail 5 by multiple sliding blocks 1, and sliding block 1 can
Slided along guide rail 5, be also equipped with the light room 13 for offering light inlet on one side on sliding block 1, be provided with power supply in light room 13, power supply with
Photo resistance, light emitting diode and switch are connected, and two pieces of polarizing films 12 are provided at light inlet and face light source 7 is arranged；
5 side of guide rail is provided with scale 4, and 1 side of sliding block is provided with pointer 3 corresponding with scale 4；Light source 7 is He-Ne laser；Light
Screen 6 is white reflection film；Sliding block 1 is adjusted bolt 2 and guide rail 5 is fixed.
Successively installed when demonstrating the interference phenomenon of light, on guide rail 5 light source 7, beam expanding lens 8, double-slit baffle 9, focus lamp 10 with
And optical screen 6, light source 7, diameter of the light Jing Guo 8 expanded beam of beam expanding lens and the angle of divergence for reducing laser beam are opened, later
Laser irradiation preferably converges using focus lamp 10 in double-slit baffle 9 and light and dark item is finally presented on optical screen 6
Line, spacing is equal between striped, and the width of striped is also equal；
Successively installed when demonstrating the diffraction phenomena of light, on guide rail 5 light source 7, beam expanding lens 8, single seam baffle 11, focus lamp 10 with
And optical screen 6, light source 7, diameter of the light Jing Guo 8 expanded beam of beam expanding lens and the angle of divergence for reducing laser beam are opened, later
Laser irradiation preferably converges on singly seam baffle 11, using focus lamp 10 and finally presents on optical screen 6 brightness striped,
Most wide among the striped of middle generation, brightness is maximum, becomes narrow gradually toward both sides, but be also it is light and dark, fringe spacing is also different；
When demonstrating the polarization phenomena of light, light source 7, beam expanding lens 8, focus lamp 10 and light room 13 are successively installed on guide rail 5, it will
The polarization direction of two pieces of polarizing films 12 keeps being mutually perpendicular to, and the switch in light room 13 is opened, due to darker, photosensitive electricity in light room 13
The resistance value of resistance is larger, so that the light that light emitting diode issues is darker, opens light source 7, light passes through 8 expanded beam of beam expanding lens
Diameter and reduce the angle of divergence of laser beam, using focus lamp 10, preferably convergence is radiated on polarizing film 12, is slowly turned
One of polarizing film 12 is moved, then it can be seen that the brightness that light emitting diode issues constantly is becoming strong, when two pieces of polarizing films
When 12 polarization direction is parallel to each other, the brightness of light emitting diode reaches maximum, is further continued for rotatory polarization piece 12, it can be seen that hair
The brightness of optical diode is continuously getting smaller and smaller again, in this way can very visually at demonstration light polarization characteristic.
The utility model is not limited to the above embodiment, on the basis of the technical solution of the disclosure, the technology of this field
According to disclosed technology contents, some of which technical characteristic can be made personnel by not needing creative labor
Replacement and deformation, these replacements and deformation are within the protection scope of the present utility model.
Claims (5)
1. a kind of interference of light, diffraction and polarization demonstration device, including light source, beam expanding lens, focus lamp, single to stitch baffle, double slit gear
Plate and optical screen, it is characterised in that: the light source, beam expanding lens, focus lamp, single seam baffle, double-slit baffle and optical screen pass through more
A sliding block is mounted on guide rail, and sliding block can be slided along guide rail, and the light room for offering light inlet on one side is also equipped on sliding block, described
Power supply is provided in light room, power supply is connected with photo resistance, light emitting diode and switch, and two pieces of polarizations are provided at light inlet
Piece and the setting of face light source.
2. interference, diffraction and the polarization demonstration device of a kind of light according to claim 1, it is characterised in that: guide rail side
It is provided with scale, the sliding block side is provided with pointer corresponding with scale.
3. interference, diffraction and the polarization demonstration device of a kind of light according to claim 2, it is characterised in that: the light source
For He-Ne laser.
4. interference, diffraction and the polarization demonstration device of a kind of light according to claim 1 to 3, feature exist
In: the optical screen is white reflection film.
5. interference, diffraction and the polarization demonstration device of a kind of light according to claim 1 to 3, feature exist
In: the sliding block is adjusted bolt and is fixed with guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820828723.4U CN208938465U (en) | 2018-05-31 | 2018-05-31 | A kind of interference of light, diffraction and polarization demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820828723.4U CN208938465U (en) | 2018-05-31 | 2018-05-31 | A kind of interference of light, diffraction and polarization demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208938465U true CN208938465U (en) | 2019-06-04 |
Family
ID=66714715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820828723.4U Expired - Fee Related CN208938465U (en) | 2018-05-31 | 2018-05-31 | A kind of interference of light, diffraction and polarization demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208938465U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768685A (en) * | 2020-07-30 | 2020-10-13 | 马鞍山学院 | Diffraction experimental device and experimental method thereof |
| CN113066355A (en) * | 2021-04-14 | 2021-07-02 | 杭州大华仪器制造有限公司 | Photoelectric technology comprehensive experiment equipment and operation method thereof |
-
2018
- 2018-05-31 CN CN201820828723.4U patent/CN208938465U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111768685A (en) * | 2020-07-30 | 2020-10-13 | 马鞍山学院 | Diffraction experimental device and experimental method thereof |
| CN113066355A (en) * | 2021-04-14 | 2021-07-02 | 杭州大华仪器制造有限公司 | Photoelectric technology comprehensive experiment equipment and operation method thereof |
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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: 20190604 |