CN211264754U - Improved Michelson interferometer device - Google Patents
Improved Michelson interferometer device Download PDFInfo
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- CN211264754U CN211264754U CN201921970626.XU CN201921970626U CN211264754U CN 211264754 U CN211264754 U CN 211264754U CN 201921970626 U CN201921970626 U CN 201921970626U CN 211264754 U CN211264754 U CN 211264754U
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- plane mirror
- optical system
- michelson interferometer
- receiving screen
- laser
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Abstract
The utility model discloses a modified michelson interferometer device, include: a body on which an optical system is disposed; the transverse frame is arranged on one side of the body; a receiving screen detachably provided on the cross frame for receiving the light transmitted from the optical system to display interference fringes on the receiving screen; the laser receiver is arranged on the transverse frame and used for detecting whether laser is received or not; the optical system comprises a detachable convex lens which is opposite to an external laser light source; the optical system further comprises a first plane mirror and a second plane mirror, wherein the angles of the first plane mirror and the second plane mirror are adjustable. The utility model provides a modified michelson interferometer device can make things convenient for the student to adjust, has shortened the experimental time, has improved experimental efficiency, avoids causing the damage to eyes simultaneously.
Description
Technical Field
The utility model relates to an optical instrument field, concretely relates to modified michelson interferometer device.
Background
The michelson interferometer is an amplitude-splitting double-beam interferometer, and is generally used for teaching physical experiment lessons.
As shown in fig. 3, which is a schematic diagram of an optical path when an interference fringe is observed by using a michelson interferometer, in fig. 3, the light splitting plate G1 and the compensation plate G2 are parallel plates having the same thickness, and the rear surface of the light splitting plate G1 is coated with a transflective film. A beam of light emitted by the laser light source 5 (which can be a he-ne laser) is converged by the short-focus convex lens S to obtain a point light source, the light emitted by the point light source is equivalent to spherical wave, the spherical wave is emitted onto the light splitting plate G1 and is divided into two beams of light beams with approximately equal light intensity by the semi-transparent semi-reflective film, the reflected light is expressed as a light beam i, and the transmitted light is expressed as a light beam ii; the beam splitter G1 and the two plane mirrors M1 and M2 form an angle of 45 degrees, so that the light beam I enters the first plane mirror M1 approximately vertically, is reflected and returns along the original path, and is transmitted to the receiving screen 3 through the beam splitter G1; after the light beam II passes through the compensation plate G2, the light beam II is almost vertically incident on the second plane mirror M2, returns along the original path after being reflected, is reflected on the rear surface of the light splitting plate G1, meets with the light beam I and interferes; the function of the compensating plate G2 is to make the optical path of the light beam II in the glass identical to that of the light beam I.
A plurality of small screws are arranged behind the first plane mirror M1 (movable mirror) and the second plane mirror M2 (fixed mirror) respectively to adjust the inclination of the mirror surface; and the position of the first plane mirror M1 can be adjusted to change the optical path difference between the two beams. When M1 is strictly parallel to the virtual image M2' of M2, i.e. M1 and M2 are strictly perpendicular, interference fringes consisting of a series of alternating bright and dark concentric circles are observed on the receiving screen 3. Therefore, in the specific operation of the experiment, M1 and M2 must be strictly vertical. The currently used adjustment methods are: the receiving screen 3 is taken off, the light spots in the spectroscope G1 are observed by eyes, screws at the back of the M1 and M2 mirrors are carefully adjusted, the brightest two light spots (which are respectively the main light spots formed by the reflection of the M1 and M2 mirrors) in the two rows of light spots are strictly superposed, and then the M1 and the M2 are shown to be vertical to each other, and then the receiving screen 3 is mounted, so that the interference fringes can be observed.
However, when the conventional michelson interferometer is used, in the adjustment process, because the wavelength of light in the optical phenomenon is in the nanometer level, the requirement on environmental factors is high, interference factors are many in the process, such as slight movement of a table and a chair and vibration of the instrument, and the like, and eyes are required to observe whether two light spots are overlapped in the whole process, so that a great error is inevitably caused, and eyes feel uncomfortable after watching laser light spots for a long time, and the eyes can be damaged.
Therefore, it is necessary to design an improved michelson interferometer apparatus to facilitate the adjustment of students, shorten the experimental time, and avoid the damage to eyes while improving the experimental efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a modified michelson interferometer device, include:
a body on which an optical system is disposed;
the transverse frame is arranged on one side of the body;
a receiving screen detachably provided on the cross frame for receiving the light transmitted from the optical system to display interference fringes on the receiving screen; and
the laser receiver is arranged on the transverse frame and used for detecting whether laser is received or not;
the optical system comprises a detachable convex lens which is opposite to an external laser light source;
the optical system further comprises a first plane mirror and a second plane mirror, wherein the angles of the first plane mirror and the second plane mirror are adjustable.
In some embodiments, the laser receiver is located outside of the receiving screen.
In some embodiments, the laser receiver is detachably disposed on the cross frame and can be disposed at the same position as the receiving screen, respectively.
In some embodiments, after the adjustment is completed, the first plane mirror and the second plane mirror are perpendicular to each other, the first plane mirror faces the receiving screen and the laser receiver, and the second plane mirror faces the external laser light source.
Compared with the prior art, the utility model has the advantages that: the utility model provides an improved michelson interferometer device, when adjusting first plane mirror and second plane mirror perpendicular, only need to take off convex lens and receiving screen, open external laser light source, shelter from first plane mirror, adjust the angle of second plane mirror and make laser receiver on receive laser, remove first plane mirror light screen and shelter from second plane mirror again, adjust the angle of first plane mirror and make laser receiver on receive laser, accomplish the regulation promptly; of course the order of adjustment of the two mirrors may be reversed. The utility model provides a modified michelson interferometer device can make things convenient for the student to adjust, has shortened the experimental time, has improved experimental efficiency, avoids causing the damage to eyes simultaneously.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention, which is made with reference to the accompanying drawings, and can help to provide a thorough understanding of the present invention.
Fig. 1 is a schematic external view of an improved michelson interferometer apparatus provided by the present invention;
fig. 2 is a schematic diagram of an optical path when the improved michelson interferometer apparatus provided by the present invention is used for adjustment;
fig. 3 is a schematic diagram of an optical path when observing interference fringes by using a michelson interferometer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs.
Referring to fig. 1, for the present invention provides an improved michelson interferometer apparatus, including: the optical system comprises a body 1, wherein an optical system is arranged on the body 1; a cross frame 2 arranged at one side of the body 1; a receiving screen 3 detachably provided on the cross frame 2 for receiving the light transmitted from the optical system to display interference fringes on the receiving screen 3; and a laser receiver 4 disposed on the cross frame 2 for detecting whether the laser is received.
Further, referring to fig. 3, the optical system includes a detachable convex lens S facing the external laser light source 5; like the conventional michelson interferometer, the optical system further includes a first flat mirror M1 and a second flat mirror M2 with adjustable angles, and a beam splitter G1 and a compensation plate G2.
The angles of the first plane mirror M1 and the second plane mirror M2 are adjusted by adjusting screws on the back of the first plane mirror M1 and the second plane mirror M2, respectively, and the first plane mirror M1 is arranged on the guide rail, the position of the first plane mirror M1 is adjustable, and the relative position of the second plane mirror M2 is fixed. The utility model provides a modified michelson interferometer device, the concrete structure and the principle of its body 1 are the same basically with current michelson interferometer, no longer give unnecessary details here.
According to some embodiments, as shown in fig. 1, the laser receiver 4 is located outside the receiving screen 3, and when the laser receiver 4 needs to be used, the detachable receiving screen 3 is removed first. In other embodiments, the laser receiver 4 may be detachably disposed on the cross frame and may be disposed at the same position as the receiving screen 3, and when the laser receiver 4 needs to be used, the receiving screen 3 may be removed first, and then the laser receiver 4 may be mounted at the same position.
Further referring to fig. 2, the utility model provides an improved michelson interferometer device, when adjusting first plane mirror M1 and second plane mirror M2 perpendicular, only need to take lower convex lens S and receive screen 3, open external laser light source 5, shelter from first plane mirror M1, adjust the angle of second plane mirror M2 and make laser receiver 4 go up and receive laser, remove first plane mirror light screen and shelter from second plane mirror M2 again, adjust the angle of first plane mirror M1 and make laser receiver 4 go up and receive laser, namely accomplish the regulation, of course the order of regulation of two plane mirrors M1 and M2 also can be reversed; after that, the upper convex lens S and the receiving screen 3 are mounted so that interference fringes can be observed on the receiving screen. After the adjustment is completed, the first plane mirror M1 and the second plane mirror M2 are perpendicular to each other, the first plane mirror M1 faces the receiving screen 3 and the laser receiver 4, and the second plane mirror M2 faces the external laser light source 5.
Therefore, the utility model provides a modified michelson interferometer device can make things convenient for the student to adjust, has shortened the experimental time, has improved experimental efficiency, avoids causing the damage to eyes simultaneously.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. An improved michelson interferometer apparatus, comprising:
a body on which an optical system is disposed;
the transverse frame is arranged on one side of the body;
a receiving screen detachably provided on the cross frame for receiving the light transmitted from the optical system to display interference fringes on the receiving screen; and
the laser receiver is arranged on the transverse frame and used for detecting whether laser is received or not;
the optical system comprises a detachable convex lens which is opposite to an external laser light source;
the optical system further comprises a first plane mirror and a second plane mirror, wherein the angles of the first plane mirror and the second plane mirror are adjustable.
2. The improved michelson interferometer apparatus of claim 1, wherein the laser receiver is located outside the receiving screen.
3. The improved michelson interferometer apparatus of claim 1, wherein the laser receivers are removably disposed on the cross-frame and are each positionable at the same location as the receiving screen.
4. The improved michelson interferometer apparatus of claim 1, wherein after tuning is complete, the first and second flat mirrors are perpendicular to each other, and the first flat mirror faces the receiving screen and laser receiver, and the second flat mirror faces an external laser light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921970626.XU CN211264754U (en) | 2019-11-15 | 2019-11-15 | Improved Michelson interferometer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921970626.XU CN211264754U (en) | 2019-11-15 | 2019-11-15 | Improved Michelson interferometer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211264754U true CN211264754U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921970626.XU Expired - Fee Related CN211264754U (en) | 2019-11-15 | 2019-11-15 | Improved Michelson interferometer device |
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| Country | Link |
|---|---|
| CN (1) | CN211264754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967534A (en) * | 2021-02-07 | 2021-06-15 | 广州大学 | Michelson interferometer virtual simulation system and Michelson interferometer experiment method |
-
2019
- 2019-11-15 CN CN201921970626.XU patent/CN211264754U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112967534A (en) * | 2021-02-07 | 2021-06-15 | 广州大学 | Michelson interferometer virtual simulation system and Michelson interferometer experiment method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 Termination date: 20211115 |
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| CF01 | Termination of patent right due to non-payment of annual fee |