CN104200727A - Stepless adjustable slit device - Google Patents
Stepless adjustable slit device Download PDFInfo
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- CN104200727A CN104200727A CN201410488094.1A CN201410488094A CN104200727A CN 104200727 A CN104200727 A CN 104200727A CN 201410488094 A CN201410488094 A CN 201410488094A CN 104200727 A CN104200727 A CN 104200727A
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- light hole
- slit
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- double slit
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Abstract
The invention discloses a stepless adjustable slit device which comprises a support, a single and double-slit disc and a shading disc. A horizontal rotary shaft is fixed to the upper end of the support, the center of the single and double-slit disc and the center of the shading disc sequentially sleeve the rotary shaft, and the single and double-slit disc and the shading disc can respectively rotate around the rotary shaft; an arc-shaped single slit and arc-shaped double slits are respectively arranged on the single and double-slit disc along the same circumference of the single and double-slit disc, the slit width of the arc-shaped single slit is continuously and progressively increased, and the distance between the arc-shaped double slits is continuously and progressively increased; a first light hole, a second light hole, a third light hole and a fourth light hole which have identical diameters are arranged on the shading disc along the same circumference of the shading disc at equal angular intervals, and filters in different colors are respectively embedded in the second light hole, the third light hole and the fourth light hole. The stepless adjustable slit device has the advantages that the width of the single slit and the distance between the double slits can be continuously adjusted, and accordingly the stepless adjustable slit device brings convenience for observing and comparing experimental phenomena and is favorable for deepening understanding of diffraction and interference phenomena and laws.
Description
Technical field
The present invention relates to a kind of multi-functional optical experimental device, be specially a kind of stepless adjustable slit device.
Background technology
In single slit diffraction and Dual-slit Interference Experiment, need to use single seam and double slit.The wide difference of single seam seam, the difference of double slit spacing, the difference of lambda1-wavelength, all can directly affect width and the distribution of single slit diffraction, two-slit interference striped.When experiment, generally observe these variations by single seam of replacing different in width, the double slit of different spacing, the light source of different wave length, both spended times of this replacing, are not easy to again the comparison directly perceived between experimental phenomena.Also can change seam with the conventional adjustable slit in laboratory wide, if but this slit regulates improperly, and very easily cause the edge of a knife of slit collide and damage.Above problem is to the observation of single slit diffraction under different condition and Dual-slit Interference Experiment phenomenon and relatively make troubles.
Summary of the invention
The object of the invention is to invent that a kind of single seam seam is wide, double slit spacing can continuously adjustable stepless adjustable slit device, be convenient to demonstration and change with diffraction, interference fringe that more single seam stitches under wide, different double slit spacing, different lambda1-wavelength, deepen the understanding to single slit diffraction, Dual-slit Interference Experiment rule.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions:
A kind of stepless adjustable slit device, comprises support, single double slit dish and blanking disc; Single double slit dish and blanking disc are circle, and diameter is identical; A horizontal rotating shaft is fixed in support upper end, and the center of single double slit dish and blanking disc is set in successively in rotating shaft and can rotates around the axis respectively; On described single double slit dish, be respectively equipped with the wide circular arc list seam increasing progressively continuously of seam along same circumference, and the circular arc double slit that increases progressively continuously of spacing; On described blanking disc, along same circumference, etc. angular separation be provided with the first light hole, the second light hole, the 3rd light hole and the 4th light hole, the diameter of the first light hole, the second light hole, the 3rd light hole, the 4th light hole is identical, wherein on the second light hole, the 3rd light hole, the 4th light hole, is embedded with respectively the optical filter of different colours; Described the first light hole, the second light hole, the 3rd light hole, the 4th light hole center be to the distance in the blanking disc center of circle, equals single seam, the double slit center line distance to single double slit dish center of circle.
It is 0.02mm that described list stitches the wide place of crack, and the wide place of maximum seam is 1.20mm.
Two seam width of described double slit are identical, are 0.02mm-0.20mm, and double slit spacing minimum is 0.10mm, is 1.00mm to the maximum.
It is red, green, blue that optical filter color on described the second light hole, the 3rd light hole, the 4th light hole is respectively.
Owing to adopting above-mentioned design, the present invention can produce following beneficial effect:
While observing single slit diffraction phenomenon, with the first light hole on monochromatic collimated beam irradiation blanking disc, rotate single double slit dish, a part for single seam is gone to after the first light hole, on screen a long way off, can observe the pattern of single slit diffraction, slowly rotate single double slit dish and can continuously change single width stitching, now can be observed diffraction pattern with the wide respective change of seam.
While observing two-slit interference phenomenon, with the first light hole on monochromatic collimated beam irradiation blanking disc, rotate single double slit dish, a part for double slit is gone to after the first light hole, on screen a long way off, can observe the pattern of two-slit interference, slowly the single double slit dish of rotation can continuously change the spacing of double slit, now can be observed the respective change of interference pattern with double slit spacing.
Incident light be white light time, rotate blanking disc, make incident ray respectively by directive list seam or double slit after the second light hole, the 3rd light hole, the 4th light hole, observable and relatively diffraction, interference fringe are with the variation of lambda1-wavelength.
It is adjustable that the present invention has realized the continuous stepless of single seam width, double slit spacing, facilitated observation and the comparison of experimental phenomena, the setting of optical filter on light hole, and the diffraction, the interference pattern that are conducive to observe under different light rays change.The present invention can be used for optical demonstration experiment, is conducive to deepen the understanding to diffraction, interference and rule.
Brief description of the drawings
Below in conjunction with accompanying drawing, the invention will be further described.
Fig. 1 is formation schematic diagram of the present invention.
Fig. 2 is the structural representation of single double slit dish.
Fig. 3 is the structural representation of blanking disc.
In figure: 1. support, 2. single double slit dish, 3. blanking disc, 11. rotating shafts, 21. single seams, 22. double slits, 31. first light holes, 32. second light holes, 33. the 3rd light holes, 34. the 4th light holes.
Embodiment
As shown in Figure 1, the present invention includes support 1, single double slit dish 2 and blanking disc 3; Single double slit dish 2 is circle with blanking disc 3, and diameter is identical; A horizontal rotating shaft 11 is fixed in support 1 upper end, and the center of single double slit dish 2 and blanking disc 3 is set in rotating shaft 11 successively, can distinguish around the shaft and 11 rotate.
As shown in Figure 2, on single double slit dish 2, be respectively equipped with the wide circular arc list seam increasing progressively continuously 21 of seam along same circumference, and the circular arc double slit 22 that increases progressively continuously of spacing.
As shown in Figure 3, on blanking disc 3, along same circumference, etc. angular separation be provided with the first light hole 31, the second light hole 32, the 3rd light hole 33 and the 4th light hole 34, the diameter of the first light hole 31, the second light hole 32, the 3rd light hole 33, the 4th light hole 34 is identical, wherein on the second light hole 32, the 3rd light hole 33, the 4th light hole 34, is embedded with respectively the optical filter of different colours; The first light hole 31, the second light hole 32, the 3rd light hole 33, the 4th light hole 34 centers be to the distance in blanking disc 3 centers of circle, equals single seam 21, the double slit 22 center lines distance to single double slit dish 2 centers of circle.
The wide place of crack of single seam 21 is 0.02mm, and the wide place of maximum seam is 1.20mm.
Two seam width of double slit 22 are identical, are 0.02mm-0.20mm, and double slit spacing minimum is 0.10mm, is 1.00mm to the maximum.
It is red, green, blue that optical filter color on the second light hole 32, the 3rd light hole 33, the 4th light hole 34 is respectively.
Claims (4)
1. a stepless adjustable slit device, comprises support (1), single double slit dish (2) and blanking disc (3); Single double slit dish (2) is circle with blanking disc (3), and diameter is identical; A horizontal rotating shaft (11) is fixed in support (1) upper end, and the center of single double slit dish (2) and blanking disc (3) is set in rotating shaft (11) successively can distinguish around the shaft (11) rotation; It is characterized in that: described single double slit dish (2) is upper, be respectively equipped with the wide circular arc list seam (21) increasing progressively continuously of seam along same circumference, and the circular arc double slit (22) that increases progressively continuously of spacing; On described blanking disc (3), along same circumference, etc. angular separation be provided with the first light hole (31), the second light hole (32), the 3rd light hole (33) and the 4th light hole (34), the diameter of the first light hole (31), the second light hole (32), the 3rd light hole (33), the 4th light hole (34) is identical, wherein on the second light hole (32), the 3rd light hole (33), the 4th light hole (34), is embedded with respectively the optical filter of different colours; Described the first light hole (31), the second light hole (32), the 3rd light hole (33), the 4th light hole (34) center be to the distance in blanking disc (3) center of circle, equals single seam (21), double slit (22) the center line distance to single double slit dish (2) center of circle.
2. the stepless adjustable slit device of one according to claim 1, is characterized in that: the wide place of the crack of described single seam (21) is 0.02mm, and the wide place of maximum seam is 1.20mm.
3. the stepless adjustable slit device of one according to claim 1, is characterized in that: two seam width of described double slit (22) are identical, are 0.02mm-0.20mm, and double slit spacing minimum is 0.10mm, is 1.00mm to the maximum.
4. the stepless adjustable slit device of one according to claim 1, is characterized in that: the optical filter color on described the second light hole (32), the 3rd light hole (33), the 4th light hole (34) is respectively red, green, blue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488094.1A CN104200727A (en) | 2014-09-22 | 2014-09-22 | Stepless adjustable slit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488094.1A CN104200727A (en) | 2014-09-22 | 2014-09-22 | Stepless adjustable slit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104200727A true CN104200727A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410488094.1A Pending CN104200727A (en) | 2014-09-22 | 2014-09-22 | Stepless adjustable slit device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104200727A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192025A (en) * | 2018-10-09 | 2019-01-11 | 瑞安市任奇科技有限公司 | A kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating |
| CN112991891A (en) * | 2021-03-11 | 2021-06-18 | 湖州师范学院 | Two-way adjustable double slit device of inserted sheet formula |
| CN112991892A (en) * | 2021-03-11 | 2021-06-18 | 湖州师范学院 | Flexible double-slit device for double-slit experiment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1541660A1 (en) * | 1988-04-07 | 1990-02-07 | МГУ им.М.В.Ломоносова | Method of demonstration of optical interference and light diffraction |
| CN201622747U (en) * | 2010-01-09 | 2010-11-03 | 许红芬 | Interference and diffraction demonstration teaching aid of light |
| CN103680275A (en) * | 2013-12-27 | 2014-03-26 | 齐齐哈尔大学 | Variable-angle single slit diffraction experiment instrument |
| CN103943015A (en) * | 2014-01-21 | 2014-07-23 | 浙江向阳花教学器材有限公司 | Minisize physical optical viewer |
-
2014
- 2014-09-22 CN CN201410488094.1A patent/CN104200727A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1541660A1 (en) * | 1988-04-07 | 1990-02-07 | МГУ им.М.В.Ломоносова | Method of demonstration of optical interference and light diffraction |
| CN201622747U (en) * | 2010-01-09 | 2010-11-03 | 许红芬 | Interference and diffraction demonstration teaching aid of light |
| CN103680275A (en) * | 2013-12-27 | 2014-03-26 | 齐齐哈尔大学 | Variable-angle single slit diffraction experiment instrument |
| CN103943015A (en) * | 2014-01-21 | 2014-07-23 | 浙江向阳花教学器材有限公司 | Minisize physical optical viewer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192025A (en) * | 2018-10-09 | 2019-01-11 | 瑞安市任奇科技有限公司 | A kind of physics teaching diffraction experiment by narrow opening apparatus for demonstrating |
| CN109192025B (en) * | 2018-10-09 | 2020-07-07 | 瑞安市任奇科技有限公司 | Single slit diffraction experiment demonstration device for physics teaching |
| CN112991891A (en) * | 2021-03-11 | 2021-06-18 | 湖州师范学院 | Two-way adjustable double slit device of inserted sheet formula |
| CN112991892A (en) * | 2021-03-11 | 2021-06-18 | 湖州师范学院 | Flexible double-slit device for double-slit experiment |
| CN112991891B (en) * | 2021-03-11 | 2023-06-06 | 湖州师范学院 | Two-way adjustable double slit device of inserted sheet formula |
| CN112991892B (en) * | 2021-03-11 | 2023-06-23 | 湖州师范学院 | Flexible double-slit device for double-slit experiment |
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Application publication date: 20141210 |