CN112991891B - Two-way adjustable double slit device of inserted sheet formula - Google Patents

Abstract

The utility model belongs to the technical field of double-slit experimental equipment, and particularly relates to an inserting sheet type bidirectional adjustable double-slit device. According to the utility model, by arranging the double-slit plugboard unit, the baffle plate unit and the plugboard placing frame unit on the vertical bottom board unit, the effect that two parameters of the slit distance and the slit width of the double-slit device can be flexibly adjusted is achieved. The double-slit device has the advantages of reasonable and effective structure, simple and convenient operation of adjusting two parameters of slit width and slit distance, high stability before and after adjustment, difficult occurrence of unexpected deviation, flexible and ingenious use mode of the double-slit plugboard units which are used one by one and are overlapped with narrower vertical connecting strips at the back, compact and stable structure of the whole double-slit device, and higher efficiency and comprehensiveness when being used for optical experiments.

Description

A two-way adjustable double-slit device of insert type

technical field

The invention belongs to the technical field of double-slit experimental equipment, in particular to a two-way adjustable double-slit device of insert type.

Background technique

In the prior art, the double slit of the double slit experiment is fixed, so the parameters of the double slit are not adjustable. Specifically, the slit width and the distance between the slits are fixed, so it will be useful for teaching to explore theories and methods such as optical double slit interference. The experiment caused certain limitations, which made it impossible to deepen the understanding of double-slit interference knowledge through hands-on experiments in teaching, and limited some experimental research on optics.

So to sum up, there is an urgent need for an improved double-slit device with adjustable slit width and slit distance, and can be adjusted asymmetrically to meet the teaching experiments of various diffraction systems, interference systems, and spectroscopic and selective systems.

The patent announcement number is CN210039349U, and the Chinese utility model patent with the announcement date of 2020.02.07 discloses a test device for measuring the wavelength of light by double-slit interferometry, including a laser pointer, a double-slit device, a smoke box, a photovoltaic cell, a digital meter and a light Tool base, the bottom of the laser pointer is connected with a mounting base, the mounting base is arranged on the optical tool base, the side of the laser pointer is provided with a double-slit device, and the double-slit device includes a fixed bracket, a double-slit and adjustable chairs.

However, in the double-slit interference device in this utility model patent, the two parameters of the double-slit device, the slit width and the slit distance, are inconvenient to adjust, so there is a problem that the use of the double-slit experiment is not flexible enough.

Contents of the invention

The present invention provides an insert type two-way adjustable double-slit device, which can achieve the seam of the double-slit device by arranging a double-slit insert unit, a baffle unit and an insert rack unit on the vertical bottom plate unit. The effect that the two parameters of distance and slit width can be adjusted flexibly is the meaning of the above-mentioned "two-way adjustable".

The technical solution adopted by the present invention to solve the above-mentioned problems is: an insert type two-way adjustable double-slit device, including a vertical bottom plate unit, which is arranged on the side of the vertical bottom plate unit and inserted one by one for use. Provide several double-slit inserting board units with double-slit structures with different seam distances, and are arranged on the side of the vertical bottom plate unit and are respectively located at the two sides of the double-slit inserting board unit and are used in a relatively close manner. Two flapper units for adjusting the effective double slit width.

A further preferred technical solution is that: the vertical bottom plate unit includes a vertical riser, a plate body fixing hole arranged on the vertical riser and used for passing light is arranged on the side of the vertical riser and It is located at the position below the plate body fixing hole and is used to engage the baffle unit in the limit sliding, engage and fix the engaging plate part of the double-slit inserting plate unit, and is arranged on the side of the vertical vertical plate Two groups of threaded grooves are respectively located on both sides of the fixing hole of the plate body and are respectively used for installing the two baffle units.

A further preferred technical solution is that: the engaging plate part includes a horizontal support plate vertically arranged on the side of the vertical vertical plate and located below the fixing hole of the plate body, and arranged on the upper surface of the horizontal support plate And parallel to the vertical vertical plate and used to engage and clamp the horizontal clamping plate of the baffle unit inwardly, and set on the upper surface of the horizontal support plate and respectively located at the positions on both sides of the fixing hole of the plate body And it is used to engage and fix the two vertical engaging plates of the double-slit inserting board unit.

A further preferred technical solution is that: the double-slit inserting unit includes a rectangular plate body for insertion between the two vertical engaging plates, which is arranged on the rectangular plate body and fixed with the plate body After the holes are overlapped, there is still a board body opening for light to pass through the opening to form the initial double-slit structure, and a vertical connecting strip arranged in the board body opening and used to form the double-slit gap.

A further preferred technical solution is that: the baffle unit includes a vertical fixed plate installed on the threaded groove through bolts, a movable plate whose lower end is inserted between the horizontal support plate and the horizontal engaging plate, and is arranged on On one of the vertical sides of the movable plate and used to connect the return spring of the vertical fixed plate, it is arranged on the other vertical side of the movable plate and is located outside the rectangular plate body and has an acute angle edge It is a right-angled trapezoidal plate on the outer side of the effective double slit, and an adjusting bolt screwed on the vertical fixed plate and used to laterally push the movable plate.

A further preferred technical solution is that: the number of the double-slit board units is 6, and the widths of the vertical connecting strips of the 6 double-slot board units are 0.5mm, 0.6mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1.0mm.

A further preferred technical solution is that: the side of the vertical vertical board is different from the side of the baffle unit, and there is a board installation rack unit for placing the remaining 5 double-slit board units that are idle, and the middle position is idle. The double-slotted board unit horizontally overlaps with the double-slotted board unit being used on the other side, and the width of the vertical connecting strip of the idle double-slotted board unit in the middle is smaller than that of the other side For the double-slit board unit in use, when the double-slit board unit with the vertical connecting strip with a width of 0.5mm is in use, the idle double-slit board unit at the middle position on the other side is taken out.

A further preferred technical solution is that: the board mounting rack unit includes a bottom slat arranged on the side of the vertical riser, two vertical slats respectively arranged at two ends of the bottom slat, and two The ends are respectively arranged on the two vertical slats and are used to expose the connecting strip protection plate of the upper edge of the opening of the plate body to be hooked by pulling down.

A further preferred technical solution is that: the board mounting frame unit further includes side grooves arranged on the vertically opposite inner sides of the vertical slats and used for inserting and installing the connecting strip protection boards, which are respectively arranged on the connecting strips. Two vertical holes at both ends of the strip protection plate, a vertical fixing rod arranged on the inner top surface of the side groove and used for inserting into the vertical hole, and a vertical fixing rod sleeved on the vertical fixing rod and located at the connection The support spring under the strip protection plate and used to jack up the connecting strip protection plate upwards.

A further preferred technical solution is that: a fracture for loading and unloading the support spring is provided between the lower end surface of the vertical fixing rod and the inner bottom surface of the side groove.

The invention has a reasonable and effective structure of the double slit device, the adjustment operation of the two parameters of the slit width and the slit distance of the double slit device is simple and convenient, the stability before and after adjustment is high, and accidental deviation is not easy to occur, and the double slit inserting plate units are used one by one, and the overlapping at the back is relatively small. The use of narrow vertical connecting strips is flexible and ingenious, the structure of the entire double-slit device is compact and stable, and it is more efficient and comprehensive when used in optical experiments.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention viewed from above.

Fig. 3 is a schematic structural view of the baffle unit in the present invention viewed from above.

Fig. 4 is a schematic view of the structure of the vertical floor unit in the present invention under the angle of front view.

FIG. 5 is a schematic diagram of the position and structure of the engaging plate part in a side view in the present invention.

Fig. 6 is a schematic diagram of the structure of the double-slit inserting board unit in the present invention.

Fig. 7 is a schematic diagram of the position and structure of the board placement frame unit in the present invention.

Fig. 8 is a schematic view of the use of the support spring in the present invention.

Detailed ways

The following descriptions are only preferred embodiments of the present invention, and do not limit the scope of the present invention.

Embodiment: As shown in accompanying drawings 1, 2, 3, 4, 5, 6, 7 and accompanying drawing 8, a two-way adjustable double-slit device of insert type includes a vertical floor unit 1, which is arranged on the On the side of the vertical floor unit 1, several double-slit inserting plate units 2 for providing double-slit structures with different gaps are provided by inserting them one by one, and are arranged on the side of the vertical floor unit 1 and are respectively located at The two baffle units 3 located on both sides of the double-slit inserting board unit 2 are used to adjust the effective double-slit width in a relatively close manner.

In this embodiment, "two-way adjustable" means that the slit distance and slit width of the double slits are both adjustable, which is convenient for subsequent optical experiment teaching, and "insert type" refers to the slit distance The adjustment method is to alternately use a plurality of double-slit inserting plate units 2 with different seam distances one by one, and finally push the two baffle plate units 3 from both sides to the middle, so that the double-slit inserting unit 2 can be reduced. The self-contained slit width of the plate unit 2 finally achieves the purpose of flexibly adjusting the two parameters of the slit distance and slit width of the double-slit structure, so as to finally improve the teaching effect of the double-slit experiment.

The vertical bottom plate unit 1 includes a vertical vertical plate 101, which is arranged on the vertical vertical plate 101 and is used for board body fixing holes 102 for passing light, is arranged on the side of the vertical vertical plate 101 and is located at the The position below the plate body fixing hole 102 is used to engage the baffle unit 3 in the limit sliding, engage and fix the engaging plate part 103 of the double-slit inserting plate unit 2, and set on the vertical vertical Two sets of screw grooves 104 on the side of the plate 101 and located on both sides of the plate body fixing hole 102 are respectively used for installing the two baffle units 3 .

In this embodiment, the initial double-slit structure is the double-slit structure that comes with the double-slit plug-in unit 2, so the opening position of the board body fixing hole 102 must first be aligned with the double-slit plug-in unit 2. The use position is aligned, and secondly, the vertical length and width dimensions must be greater than or equal to the size of the double-slit structure on the double-slit board unit 2, so that the effective double-slit structure is more stable and accurate.

Secondly, the purpose of the engaging plate part 103 is twofold: the first is to clamp and fix the double-slit plate unit 2 in use, so as to prevent it from accidentally loosening and falling; The baffle unit 3 is described above to prevent it from accidentally tilting and falling, and to ensure that it can only slide back and forth steadily from side to side.

The engaging plate portion 103 includes a horizontal support plate 103a vertically arranged on the side of the vertical vertical plate 101 and located below the plate body fixing hole 102, arranged on the upper surface of the horizontal support plate 103a and parallel to The vertical vertical plate 101 is used to engage and clamp the horizontal clamping plate 103b of the baffle unit 3 inwardly, and is arranged on the upper surface of the horizontal support plate 103a and is located on both sides of the plate body fixing hole 102 respectively. The two vertical engaging plates 103c are located at the side positions and are used to engage and fix the double-slit cardboard unit 2 .

In this embodiment, the horizontal support plate 103a and the two vertical engaging plates 103c form a U-shaped structure in a frontal view, which is used to fix the double-slit plate unit 2 in use, and the vertical The vertical plate 101 , the transverse supporting plate 103 a and the transverse engaging plate 103 b form a U-shaped structure in a side view, which is used for limiting the locking and sliding of the baffle unit 3 .

In addition, there are two baffle units 3 on the outside of the double-slit board unit 2 in use, so the baffle units 3 are not easy to flip outwards and drop, and the double-slot board unit 2 is also It is more difficult to fall.

The double-slit inserting board unit 2 includes a rectangular plate body 201 for inserting between the two vertical locking plates 103c, which is arranged on the rectangular plate body 201 and overlaps with the plate body fixing hole 102 Afterwards, there is still a plate body opening 202 for forming the initial double-slit structure in the form of an opening for light to pass through, and a vertical connecting bar 203 arranged in the plate body opening 202 and used to form a double-slit gap .

In this embodiment, the width of the upper and lower sides of the board fixing hole 102 is the upper and lower width of the actual double slit, and the two vertical sides of the vertical connecting strip 203 are the two inner sides of the actual double slit Therefore, special attention should be paid to the protection operation of the vertical connecting bar 203, as long as the edge of the vertical connecting bar 203 becomes rough, it will affect the final double-slit experimental rendering.

The baffle unit 3 includes a vertical fixed plate 302 installed on the threaded groove 104 through a bolt 301, a movable plate 303 whose lower end is inserted between the transverse support plate 103a and the transverse engaging plate 103b, and is arranged on One of the vertical sides of the movable plate 303 and used to connect the return spring 304 of the vertical fixed plate 302 is arranged on the other vertical side of the movable plate 303 and is located outside the rectangular plate body 201 And the right-angled trapezoidal plate 305 with the acute-angled edge as the outer edge of the effective double slit, and the adjusting bolt 306 screwed on the vertical fixed plate 302 and used to push the movable plate 303 laterally.

In this embodiment, the acute-angled edges of the two right-angled trapezoidal plates 305 are the two outer sides of the actual effective double-slit structure, that is, the adjustment bolts 306 push the right-angled trapezoidal plates 305 inward, The slit width of the effective double-slit structure can be reduced, otherwise the adjustment bolt 306 is loosened to both sides, and the return spring 304 can pull the two right-angled trapezoidal plates 305 to both sides, and realize the double-slit structure The effect of increasing the slit width is very simple, stable and efficient.

It should be noted that: first, the thickness difference between the inner surface of the movable plate 303 and the inner surface of the right-angled trapezoidal plate 305 is the thickness of the double-slit inserting plate unit 2, so that the double-slit inserting unit 2 can be ensured. The slotted plate unit 2 is locked and stable; secondly, the thickness of the movable plate 303 is the thickness of the space on the lateral support plate 103a located inside the lateral engaging plate 103b, so that the movable plate 303 can be guaranteed Both the outer surface and the outer surface of the right-angled trapezoidal plate 305 can be firmly fitted and slid on the inner surface of the transverse engaging plate 103b.

The number of the double-slit board units 2 is 6, and the widths of the respective vertical connecting strips 203 of the 6 double-slit board units 2 are 0.5 mm, 0.6 mm, 0.7 mm, and 0.8 mm in ascending order. mm, 0.9mm and 1.0mm. The side of the vertical vertical plate 101 is different from that of the baffle unit 3, and the side of the baffle unit 3 is provided with a board mounting frame unit 4 for placing the remaining 5 double-slit board units 2 that are idle, and the idle board unit 4 in the middle position The double-slit plug-in unit 2 overlaps horizontally with the double-slit plug-in unit 2 being used on the other side, and the width of the vertical connecting strip 203 of the idle double-slit plug-in unit 2 in the middle is smaller than that of the other side. The double-slit board unit 2 that is being used on one side, the double-slit board unit 2 with the vertical connecting strip 203 of 0.5mm width is in use, and the double-slit board unit 2 that is idle in the middle of the other side Plate unit 2 is taken out.

In this embodiment, the six vertical connecting strips 203 with widths of 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm and 1.0mm provided by the six double-slit inserting board units 2 can be It fully meets the teaching requirements of the daily double-slit interference experiment, and two particularly important points are as follows.

First, the distribution of the six double-slit board units 2 is that one of the double-slot board units 2 in use is on the "front side", that is, between the two baffle board units 3, and the remaining 5 The two double-slit board units 2 are on the "back" board mounting frame unit 4, so the structure of the entire double-slit device is more compact and efficient.

Second, the remaining 5 double-slit board units 2 are arranged in a row, and the middle double-slit board unit 2 is the "smallest" double-slit board unit 2 with a 0.5mm vertical connecting strip 203 In this way, the vertical connecting strip 203 of the double-slit inserting board unit 2 in use on the front side can completely cover the "minimum" vertical connecting strip 203, ensuring that the double-slit interference experiment will not be affected.

The board mounting frame unit 4 includes a bottom slat 401 arranged on the side of the vertical vertical plate 101, two vertical slats 402 respectively arranged at two ends of the bottom slat 401, and two ends respectively The connecting strip protection plate 403 is arranged on the two vertical slats 402 and is used to expose the upper edge of the panel body opening 202 to be hooked by pulling down. The board mounting frame unit 4 also includes side slots 404 arranged on the vertically opposite inner sides of the vertical slats 402 and used for inserting and installing the connecting strip protection plates 403, which are respectively arranged on the connecting strip protection plates Two vertical holes 405 at both ends of 403, a vertical fixing rod 406 set on the inner top surface of the side groove 404 and used to insert the vertical hole 405, and a vertical fixing rod 406 sleeved on the vertical fixing rod 406 and located The supporting spring 407 is under the connecting strip protection plate 403 and is used to lift up the connecting strip protecting plate 403 . A fracture for loading and unloading the supporting spring 407 is provided between the lower end surface of the vertical fixing rod 406 and the inner bottom surface of the side groove 404 .

In this embodiment, the distance between the opposite inner sides of the two vertical slats 402 is the sum of the widths of the five double-slit board units 2, and the idle double-slot board unit at the middle position 2. Ensure that both sides are aligned with the double-slit board unit 2 in use on the other side, and finally, when the double-slit board unit 2 of the vertical connecting strip 203 with a width of 0.5mm is in use, and Just can not put idle any other described double-slit inserting plate unit 2 in the back again, at this moment one more described double-slit inserting plate unit 2 needs to be placed elsewhere temporarily, and more suitable is, all 0.5mm width The double-slit board unit 2 of the vertical connecting strip 203 is preferably the middle one of the five double-slit board units 2 when idle, so as to ensure that the front and rear vertical connecting strips 203 can be completely covered.

In addition, the connecting strip protection plate 403 is used to completely cover all the openings 202 of the board body, the purpose is to protect the vertical connecting strip 203 with higher safety requirements, so at this time, the five double-slit inserting plates Unit 2 is not easy to take out upwards, and the solution at this time is as follows.

First, press down the connecting strip protection plate 403 initially located at a relatively high position, that is, compress the support spring 407, at this time, the plate body openings 202 of the five double-slit inserting plate units 2 The upper edge of the opening is exposed, and any one of the double-slit inserting board units 2 can be easily taken out by hooking the upper edge of the opening with a finger.

Second, the vertical fixing rod 406 is pre-inserted with the vertical channel 405 and then connected to the inner top surface of the side groove 404 to ensure the installation effectiveness of the entire structure, and the fracture is convenient for the support spring 407 installation and replacement, and the support spring 407 enables the connecting strip protection plate 403 to be located at a relatively high position to cover and protect the entire plate body opening 202, and can be pulled down to expose the plate that can be taken out to apply force The upper edge of the body opening 202 ensures that the six double-slit inserting board units 2 can be used alternately and one by one effectively and conveniently.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, within the scope of knowledge possessed by those of ordinary skill in the technical field, it can also be done without departing from the gist of the present invention. Make various modifications. These are all non-creative modifications, as long as they are all protected by the patent law within the scope of the claims of the present invention.

Claims (3)

1. An insert-type two-way adjustable double-slit device, characterized in that it includes a vertical bottom plate unit (1), which is arranged on the side of the vertical bottom plate unit (1) and inserted one by one to use A plurality of double-slit inserting board units (2) provided with double-slit structures with different seam distances, and two double-slit inserting board units (2) arranged on the side of the vertical bottom plate unit (1) and respectively located in the double-slit inserting board unit (2) Two flapper units (3) at the side positions for adjusting the effective double slit width by being relatively close together, The vertical bottom plate unit (1) includes a vertical vertical plate (101), which is arranged on the vertical vertical plate (101) and is used for plate fixing holes (102) for passing light, and is arranged on the vertical On the side of the vertical plate (101) and at the position below the plate body fixing hole (102), it is used to engage the baffle unit (3) in the limit sliding, and engage and fix the double-slit plate unit ( 2) the engaging plate part (103), which is arranged on the side of the vertical vertical plate (101) and is respectively located on both sides of the plate body fixing hole (102) and is used to install the two baffles respectively. Two sets of thread grooves (104) of the plate unit (3), The engaging plate part (103) includes a horizontal support plate (103a) vertically arranged on the side of the vertical vertical plate (101) and located below the plate body fixing hole (102), and is arranged on the horizontal The upper surface of the support plate (103a) is parallel to the vertical vertical plate (101) and is used to engage and clamp the horizontal clamping plate (103b) of the baffle unit (3) inwardly, and is arranged on the horizontal support Two vertical snapping plates (103c) on the upper surface of the plate (103a) and located on both sides of the plate body fixing hole (102) and used to engage and fix the double-slit inserting plate unit (2), The double-slit inserting board unit (2) includes a rectangular plate body (201) for inserting between the two vertical locking plates (103c), which is arranged on the rectangular plate body (201) and passes through the After the plate body fixing holes (102) are overlapped, there are still plate body openings (202) for forming the initial double-slit structure by way of light passing through the openings, and the plate body openings (202) Vertical connecting strips (203) inside and used to form a double seam gap, The number of the double-slit board units (2) is 6, and the widths of the vertical connecting strips (203) of the 6 double-slot board units (2) are 0.5 mm, 0.6 mm, and 0.6 mm respectively from small to large. mm, 0.7mm, 0.8mm, 0.9mm and 1.0mm, On the side of the vertical vertical board (101) different from the setting of the baffle unit (3), there is a board placement rack unit (4) for placing the remaining 5 double-slit board units (2) that are idle ), the idle double-slot board unit (2) in the middle overlaps horizontally with the double-slot board unit (2) being used on the other side, and the idle double-slot board unit (2) in the middle position ( 2) The width of the vertical connecting strip (203) is smaller than that of the double-slit board unit (2) being used on the other side, and the double-slit of the vertical connecting strip (203) with a width of 0.5mm When the plug-in unit (2) is in use, the idle double-slit plug-in unit (2) in the middle position on the other side is taken out, The board mounting frame unit (4) includes a bottom plate (401) arranged on the side of the vertical vertical plate (101), and two vertical The slats (402), and the two ends are respectively arranged on the two vertical slats (402) and are used to expose the upper edge of the board body opening (202) to be hooked by a pull-down method protective plate (403), The board mounting frame unit (4) also includes side slots (404) arranged on the vertically opposite inner sides of the vertical slats (402) and used for inserting and installing the connecting strip protection board (403), respectively The two vertical holes (405) arranged at both ends of the connecting strip protection plate (403) are arranged on the inner top surface of the side groove (404) and are used for vertical fixing of the vertical holes (405) a rod (406), and a supporting spring (407) sleeved on the vertical fixing rod (406) and located below the connecting strip protection plate (403) and used to lift up the connecting strip protection plate (403) . 2. A plug-in type two-way adjustable double-slit device according to claim 1, characterized in that: the baffle unit (3) includes a bolt (301) installed on the threaded groove (104) The vertical fixed plate (302), the movable plate (303) whose lower end is inserted between the horizontal supporting plate (103a) and the horizontal engaging plate (103b), is set on one of the movable plates (303) The return spring (304) on the vertical side and used to connect the vertical fixed plate (302) is arranged on the other vertical side of the movable plate (303) and is located outside the rectangular plate body (201) And the right-angled trapezoidal plate (305) with the acute-angled edge as the outer edge of the effective double slit, and the adjusting bolt ( 306). 3. The insert-type two-way adjustable double-slit device according to claim 1, characterized in that: the lower end surface of the vertical fixing rod (406) and the inner bottom surface of the side groove (404) are provided There is a fracture for loading and unloading the support spring (407).

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