CN215598324U - Optical lever laser light path stabilizer - Google Patents
Optical lever laser light path stabilizer Download PDFInfo
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- CN215598324U CN215598324U CN202122164038.0U CN202122164038U CN215598324U CN 215598324 U CN215598324 U CN 215598324U CN 202122164038 U CN202122164038 U CN 202122164038U CN 215598324 U CN215598324 U CN 215598324U
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Abstract
The application relates to an optical lever laser light path stabilizer, include: the device comprises a light emitting source, a reflecting device, a first convex lens and a light receiving device; the light emitted by the light source is reflected by the reflecting device to form a first light path; the first convex lens is fixedly arranged in the first light path and refracts light, and the distance between the first convex lens and an incident point is the focal length of the convex lens; the light finally enters the light receiving device to form a second light path. Further comprising: a first plane mirror and a second plane mirror; the first plane mirror and the second plane mirror are arranged in parallel relatively; the light rays are emitted into the first plane mirror or the second plane mirror through the first convex lens, and are emitted into the light receiving device after being reflected for multiple times through the first plane mirror and the second plane mirror. By adopting the method and the device, the stability of the light path can be realized, the structure is simple, and the realization is easy.
Description
Technical Field
The application relates to the technical field of optical lever measurement, in particular to an optical lever laser light path stabilizer.
Background
With the development of the optical lever measurement technology field, a device for measuring micro thrust using an optical lever has appeared. However, during the measurement using the optical lever, the light emitting source may form an offset of the optical path due to disturbance, thereby causing instability of the optical path and affecting reliability and stability of the optical lever experiment.
However, the existing optical path stabilization method has the problems of complex structure, high requirement, difficulty in use in optical lever measurement and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide an optical lever laser optical path stabilizer, which can achieve optical path stabilization, has a simple structure, and is easy to implement.
An optical lever laser light path stabilizer comprising: the device comprises a light emitting source, a reflecting device, a first convex lens and a light receiving device;
the light emitted by the light emitting source is reflected by the reflecting device to form a first light path;
the first convex lens is fixedly arranged in the first light path and refracts the light, and the distance between the first convex lens and an incident point is the focal length of the first convex lens;
the light ray finally enters the light receiving device to form a second light path.
In one embodiment, the method further comprises the following steps: a first plane mirror and a second plane mirror; the first plane mirror and the second plane mirror are arranged in parallel relatively;
the light rays are emitted into the first plane mirror or the second plane mirror through the first convex lens, and are emitted into the light receiving device after being reflected for multiple times through the first plane mirror and the second plane mirror.
In one embodiment, the light source further comprises a second convex lens, the second convex lens is fixedly arranged in the second light path and refracts the light, and the distance between the second convex lens and the light receiving device is the focal length of the second convex lens.
In one embodiment, the plane of the first convex lens is perpendicular to the first optical path, and the plane of the second convex lens is perpendicular to the second optical path.
In one embodiment, the reflecting means is rotatable about the centre of the reflecting means.
In one embodiment, the first convex lens and the second convex lens have different focal lengths.
In one embodiment, the first and second convex lenses are lenticular lenses, plano-convex lenses, or meniscus lenses.
In one embodiment, the first convex lens and the second convex lens are made of glass or resin.
In one embodiment, the reflecting means is a plane mirror, a spherical mirror or an aspherical mirror.
In one embodiment, the light emitting source is a laser emitter.
In the optical lever laser light path stabilizer, the light emitting source emits light, the light is reflected by the reflecting device and then enters the light receiving device, and the light path is formed by the light emitting source, the light reflecting device and the light receiving device; the first convex lens is arranged in the light path, so that the light rays reflected by the reflecting device are refracted by the first convex lens and then enter the light receiving device, and the distance between the first convex lens and the reflecting device is the focal length of the first convex lens, so that the light rays obliquely entering the first convex lens are changed into parallel light rays to be emitted. Therefore, when the light emitting source generates optical path deviation due to disturbance so that the light receiving device may not receive the reflected light, the first convex lens may refract the reflected light into parallel light, thereby ensuring the receiving of the light receiving device. This application can realize the stability of light path, improves polished rod pole measuring reliability and stability, and simple structure, with low costs, easy realization, can use in the optical lever measurement.
Drawings
FIG. 1 is one illustration of an optical lever laser light path stabilizer in one embodiment;
FIG. 2 is a schematic diagram of error generation in one embodiment;
FIG. 3 is a schematic view of a first convex lens in one embodiment;
FIG. 4 is a second schematic diagram of an optical lever laser beam path stabilizer according to an embodiment;
FIG. 5 is a third schematic diagram of an optical lever laser beam path stabilizer in one embodiment;
FIG. 6 is a schematic diagram of the mating of a first convex lens and a second convex lens in one embodiment.
The reference numbers:
the light source 1, the reflecting device 2, the first convex lens 31, the second convex lens 32, the light receiving device 4, the first plane mirror 51, and the second plane mirror 52.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The application provides an optical lever laser light path stabilizer, as shown in fig. 1, in an embodiment, including: a light emitting source 1, a reflecting device 2, a first convex lens 31 and a light receiving device 4; the light emitted by the light source 1 is reflected by the reflecting device 2 to form a first light path; the first convex lens 31 is fixedly arranged in the first light path and refracts light, and the distance between the first convex lens 31 and an incident point is the focal length of the first convex lens 31; the light finally enters the light receiving means 4 forming a second light path.
In the present embodiment, the reflecting device 2 is a plane mirror, a spherical mirror, or an aspherical mirror; the light emitting source 1 is a laser emitter; the light receiving device 4 is a PSD element, and may be another element.
As shown in fig. 2 and 3, the focal length of the first convex lens 31 is f, the deviation between the normal light entering and the disturbance light entering is Δ y, and the first convex lens 31 is fixed at a distance f from the reflection device 2, so that the light is refracted by the first convex lens 31 and then becomes parallel light to exit, thereby ensuring that the light can be collected by the light receiving device 4.
In the optical lever laser light path stabilizer, the light source 1 emits light, the light is reflected by the reflecting device 2 and then enters the light receiving device 4, and the light path is formed by the light source, the reflecting device and the light receiving device; the first convex lens 31 is disposed in the optical path, so that the light reflected by the reflecting device 2 is refracted by the first convex lens 31 and then enters the light receiving device 4, and the distance between the first convex lens 31 and the reflecting device 2 is the focal length of the first convex lens 31, so that the light obliquely entering the first convex lens 31 becomes parallel light and exits. Therefore, when the light emitting source 1 generates an optical path shift due to a disturbance such that the light receiving device 4 may not receive the reflected light, the first convex lens 31 may refract the reflected light into parallel light, thereby ensuring the reception of the light receiving device 4. This application can realize the stability of light path, improves polished rod pole measuring reliability and stability, and simple structure, with low costs, easy realization, can use in the optical lever measurement.
As shown in fig. 4, in one embodiment, includes: a light emitting source 1, a reflecting device 2, a first convex lens 31, a light receiving device 4, a first plane mirror 51 and a second plane mirror 52; the first plane mirror 51 and the second plane mirror 52 are arranged in parallel; light emitted by the light emitting source 1 is reflected by the reflecting device 2 to form a first light path, the light is incident into the first plane mirror 51 or the second plane mirror 52 through the first convex lens 31 and is reflected for multiple times between the first plane mirror 51 and the second plane mirror 52, and the reflected light is incident into the light receiving device 4 to form a second light path; the first convex lens 31 is fixedly arranged in the first light path and refracts light, and the distance between the first convex lens 31 and an incident point is the focal length of the first convex lens 31.
In this embodiment, the use of the first plane mirror 51 and the second plane mirror 52 can extend the optical path, thereby increasing the accuracy of the optical lever measurement process and improving the measurement accuracy.
As shown in fig. 5, in one embodiment, includes: a light emitting source 1, a reflecting device 2, a first convex lens 31, a second convex lens 32, a light receiving device 4, a first plane mirror 51 and a second plane mirror 52; the first plane mirror 51 and the second plane mirror 52 are arranged in parallel; light emitted by the light emitting source 1 is reflected by the reflecting device 2 to form a first light path, the light is incident into the first plane mirror 51 or the second plane mirror 52 through the first convex lens 31 and is reflected for multiple times between the first plane mirror 51 and the second plane mirror 52, and the reflected light is incident into the light receiving device 4 to form a second light path; the first convex lens 31 is fixedly arranged in the first light path and refracts light, and the distance between the first convex lens 31 and an incident point is the focal length of the first convex lens 31; the second convex lens 32 is fixedly arranged in the second optical path and refracts light, and the distance between the second convex lens 32 and the light receiving device 4 is the focal length of the second convex lens 32.
In the polished rod measurement process, light can be through multiple reflection, when finally kicking into light receiving element, probably take place to squint and make light receiving arrangement 4 probably can't receive the reflected light time, the second convex lens 32 that is arranged in the second light path can be with parallel light refraction for the slant light to guarantee to beat at the center of light receiving arrangement 4, guarantee the receiving effect, thereby realize the stability of light path, improve polished rod measuring reliability and stability.
Preferably, the plane of the first convex lens 31 is perpendicular to the first light path, and the plane of the second convex lens 32 is perpendicular to the second light path.
In the present embodiment, the planes of the first convex lens 31 and the second convex lens 32 are perpendicular to the first optical path and the second optical path, respectively, so that the deviation of the light can be avoided to the greatest extent.
In one embodiment, the reflecting means 2 may be rotatable around the centre of the reflecting means 2.
In this embodiment, the reflection device 2 may be a dynamically changing element, especially a rotating component, and the light deviation correction can be realized as long as the light impinges on the reflection device 2.
In one embodiment, the first convex lens 31 and the second convex lens 32 have different focal lengths, the first convex lens 31 and the second convex lens 32 are double convex lenses, plano-convex lenses or meniscus lenses, and the first convex lens 31 and the second convex lens 32 are made of glass or resin.
As shown in fig. 6, the focal lengths of the first convex lens 31 and the second convex lens 32 are f1 and f2, respectively, and the first convex lens 31 and the second convex lens 32 are disposed at distances f1 and f2 from the reflection device 2 and the light receiving device 4, respectively, so that when the light is disturbed and the entrance deviation of Δ y occurs, the light is refracted by the first convex lens 31 to be parallel light and then emitted, and the light is refracted by the second convex lens 32 to be incident on the light receiving device 4, thereby stabilizing the light path.
In a specific use process, the first convex lens 31 and the second convex lens 32 can be selected from different models, types, materials and sizes, and as long as the distance is properly set, the purpose of the present application can be achieved.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An optical lever laser light path stabilizer, comprising: the device comprises a light emitting source, a reflecting device, a first convex lens and a light receiving device;
the light emitted by the light emitting source is reflected by the reflecting device to form a first light path;
the first convex lens is fixedly arranged in the first light path and refracts the light, and the distance between the first convex lens and an incident point is the focal length of the first convex lens;
the light ray finally enters the light receiving device to form a second light path.
2. The optical lever laser optical path stabilizer of claim 1, further comprising: a first plane mirror and a second plane mirror; the first plane mirror and the second plane mirror are arranged in parallel relatively;
the light rays are emitted into the first plane mirror or the second plane mirror through the first convex lens, and are emitted into the light receiving device after being reflected for multiple times through the first plane mirror and the second plane mirror.
3. The optical lever laser optical path stabilizer according to claim 2, further comprising a second convex lens, wherein the second convex lens is fixedly disposed in the second optical path and refracts the light, and a distance between the second convex lens and the light receiving device is a focal length of the second convex lens.
4. The optical lever laser optical path stabilizer of claim 3, wherein the first convex lens is in a plane perpendicular to the first optical path, and the second convex lens is in a plane perpendicular to the second optical path.
5. The optical lever laser optical path stabilizer of claim 4, wherein the reflecting device is rotatable around a center of the reflecting device.
6. The optical lever laser optical path stabilizer of claim 5, wherein the first convex lens and the second convex lens have different focal lengths.
7. The optical lever laser optical path stabilizer of any one of claims 3 to 6, wherein the first convex lens and the second convex lens are biconvex lenses, plano-convex lenses or meniscus lenses.
8. The optical lever laser optical path stabilizer of any one of claims 3 to 6, wherein the first convex lens and the second convex lens are made of glass or resin.
9. The optical lever laser optical path stabilizer of any one of claims 1 to 6, wherein the reflecting device is a plane mirror, a spherical mirror or an aspherical mirror.
10. The optical lever laser light path stabilizer of any one of claims 1 to 6, wherein the light emitting source is a laser emitter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164038.0U CN215598324U (en) | 2021-09-08 | 2021-09-08 | Optical lever laser light path stabilizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122164038.0U CN215598324U (en) | 2021-09-08 | 2021-09-08 | Optical lever laser light path stabilizer |
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| CN215598324U true CN215598324U (en) | 2022-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114964588A (en) * | 2022-05-20 | 2022-08-30 | 中国人民解放军国防科技大学 | Torsional pendulum type micro-thrust measuring device and method |
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2021
- 2021-09-08 CN CN202122164038.0U patent/CN215598324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114964588A (en) * | 2022-05-20 | 2022-08-30 | 中国人民解放军国防科技大学 | Torsional pendulum type micro-thrust measuring device and method |
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