Cubic prism collimation assist device

Abstract

The utility model discloses a cubic prism collimation assist device, which is applied to a cubic prism and comprises a prism unit, a fixing unit and a laser unit. Wherein the measuring surface and the incident surface of the prism unit and the emergent surface of the prism unit are arranged in parallel, when light rays are incident in a manner of being vertical to the measuring surface of the prism unit, the light rays can be emitted out in a manner of being vertical to the emergent surface of the prism unit, and the measuring surface of the prism unit is used for being tightly pressed on a to-be-measured collimation surface of the cubic prism; the longitudinal part of the fixing unit is fixedly connected with the side wall of the prism unit, and the transverse part of the fixing unit is arranged corresponding to the cubic prism when the measuring surface of the prism unit tightly presses the to-be-measured collimation surface of the cubic prism; the laser unit is arranged on the transverse part of the fixing unit, and light emitted by the laser unit is perpendicular to the incident plane of the prism unit. According to the utility model, the problem that a theodolite in the prior art is difficult to judge whether the measurement surface of the small-size cubic prism is collimated or not is solved, and the collimation of the small-size cubic prism is measured.

Description

Technical Field

[0001] The utility model relates to the technical field of prism measurement, in particular to a cubic prism collimation assistant. Background Art

[0002] The cubic prism alignment aid is a device used to determine the alignment of the side surface of the cubic prism. In the prior art, a precision measuring device is usually used to determine whether the surface of the cubic prism is aligned. The precision measuring device includes at least a theodolite.

[0003] In the prior art, the theodolite has requirements on the size of the prism to be measured. It has a good measurement effect on larger prisms, but it is difficult to accurately determine whether the measuring surface of a smaller cubic prism is aligned.

[0004] Based on this, a new technical solution is needed. Utility Model Content

[0005] In view of this, an embodiment of the present invention provides a cubic prism alignment aid to at least solve the problem in the prior art that it is difficult for theodolites to determine whether the measuring surface of a small cubic prism is aligned.

[0006] The present invention provides the following technical solutions:

[0007] The present invention provides a cubic prism collimation aid, which is applied to a cubic prism and includes:

[0008] A prism unit, wherein a measuring surface, an incident surface, and an exit surface of the prism unit are arranged parallel to each other, and when light enters the prism unit perpendicularly to the measuring surface, the light can be emitted perpendicularly to the exit surface of the prism unit, and the measuring surface of the prism unit is used to press against the collimating surface to be measured of the cubic prism;

[0009] A fixing unit, the fixing unit having an L-shaped structure, a longitudinal portion of which is fixedly connected to the side wall of the prism unit, and a transverse portion of which is arranged corresponding to the cubic prism when the measuring surface of the prism unit is pressed against the collimating surface to be measured of the cubic prism;

[0010] A laser unit is provided on the transverse portion of the fixing unit, and the light emitted by the laser unit is perpendicular to the incident surface of the prism unit.

[0011] Furthermore, the fixing unit includes:

[0012] The two sub-fixing elements are both L-shaped structures, with their longitudinal parts respectively fixedly connected to the two ends of the prism unit, and their transverse parts respectively fixedly connected to the laser unit.

[0013] Furthermore, the longitudinal portions of the two sub-fixing elements are respectively connected to the two ends of the prism unit by adhesive bonding, and the transverse portions of the two sub-fixing elements are fixedly connected to the laser unit by interference fitting.

[0014] Furthermore, the prism unit is a heptagonal prism.

[0015] Furthermore, the prism unit further includes an upper reflective surface, the incident surface and the upper reflective surface form an angle of 45°, and the upper reflective surface and the exit surface form an angle of 135°.

[0016] Furthermore, the cubic prism collimation aid further includes:

[0017] A clamping unit, wherein the clamping unit includes two clamping parts rotatably connected at their head ends, the tail end of one of the clamping parts is rotatably connected to the longitudinal portion of the fixing unit, and the tail end of the other clamping part is rotatably provided with a plate element. When the measuring surface of the prism unit is pressed against the collimating surface to be measured of the cubic prism, the plate element is pressed against the opposite surface of the cubic prism under the action of the clamping unit. The opposite surface is the plane in the prism unit opposite to the collimating surface to be measured.

[0018] Furthermore, the two clamping parts are arranged so that the tail ends of the two clamping parts tend to approach each other through the first elastic element.

[0019] Furthermore, the head end of the clamping portion extends in a direction away from the tail end of the clamping portion to form a manipulation portion, and the two manipulation portions formed at the head ends of the two clamping portions are arranged opposite to each other.

[0020] Furthermore, a second elastic element is provided between the two operating parts, and the second elastic element causes the two operating parts to have a tendency to move away from each other, so that the tail ends of the two clamping parts have a tendency to move closer to each other.

[0021] Furthermore, the second elastic element is a spring.

[0022] Compared with the prior art, the at least one technical solution adopted in the embodiment of the present invention can achieve the following beneficial effects:

[0023] The utility model provides a cubic prism alignment auxiliary device. After the measuring surface of a prism unit is in close contact with the collimating surface to be measured of the cubic prism, a laser unit is turned on. The light emitted by the laser unit is emitted perpendicularly to the exit surface of the prism unit. Therefore, a theodolite can be used to judge whether the collimating surface to be measured of the cubic prism is aligned based on the light emitted from the exit surface of the prism unit. The collimation of the cubic prism of a smaller size is converted into the collimation of the light emitted from the exit surface. Thus, the collimation of the cubic prism can be measured based on the collimation of the light emitted from the exit surface. This solves the problem in the prior art that it is difficult for a theodolite to judge whether the measuring surface of a cubic prism of a smaller size is aligned. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 This is a structural schematic diagram of a cubic prism collimation aid according to an embodiment of the present utility model;

[0026] Figure 2 This is a side view of a cubic prism collimation aid according to an embodiment of the present invention;

[0027] Figure 3 This is an assembly cross-sectional view of the cubic prism and the prism unit in an embodiment of the present invention.

[0028] The accompanying drawings of the present invention are as follows:

[0029] 10. Cubic prism;

[0030] 20. Prism unit; 21. Measuring surface; 22. Incident surface; 23. Exit surface; 24. Upper reflection surface; 25. Middle reflection surface; 26. Lower reflection surface;

[0031] 30. Fixing unit; 31. Sub-fixing element;

[0032] 40. Laser unit;

[0033] 50. Clamping unit; 51. Clamping portion; 52. Plate element; 53. Operating portion; 54. Second elastic element. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0035] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0036] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0037] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0038] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0039] The following describes the technical solutions provided by various embodiments of the present application in conjunction with the accompanying drawings.

[0040] The present invention provides a cubic prism alignment aid, which is applied to a cubic prism 10 and includes a prism unit 20, a fixing unit 30, and a laser unit 40. The measuring surface 21, incident surface 22, and exit surface 23 of the prism unit 20 are arranged parallel to each other. When light enters the prism unit 20 perpendicularly to the measuring surface 21, the light can be emitted perpendicularly to the exit surface 23 of the prism unit 20. The measuring surface 21 of the prism unit 20 is used to press tightly against the collimation surface to be measured of the cubic prism 10. The fixing unit 30 has an L-shaped structure, with its longitudinal portion fixedly connected to the side wall of the prism unit 20 and its transverse portion corresponding to the cubic prism 10 when the measuring surface 21 of the prism unit 20 is pressed against the collimation surface to be measured of the cubic prism 10. The laser unit 40 is arranged on the transverse portion of the fixing unit 30, and the light emitted by the laser unit 40 is perpendicular to the incident surface 22 of the prism unit 20.

[0041] The cubic prism 10 of the present invention may be a cubic structure, such as a rectangular parallelepiped or a cube structure.

[0042] Among them, the light emitted from the exit surface 23 of the prism unit 20 is visible and has a sufficient length. Therefore, when the collimating surface to be measured of the cubic prism 10 is not collimated enough, the light emitted from the exit surface 23 also has a certain angle relative to the horizontal plane. At this time, whether the light emitted from the exit surface 23 is collimated can be measured by a theodolite to determine whether the collimating surface to be measured of the cubic prism 10 is collimated.

[0043] For example, when the light emitted from the exit surface 23 of the prism unit 20 has an angle with the horizontal plane, it means that the collimating surface to be measured of the cubic prism 10 has a certain degree of inclination and is not collimated enough; when the light emitted from the exit surface 23 of the prism unit 20 is parallel to the horizontal plane, it means that the collimating surface to be measured of the cubic prism 10 is collimated.

[0044] In some embodiments, when no external pressure is applied, the prism unit 20 can be attached to the cubic prism 10 using tape or non-strong glue.

[0045] In some embodiments, the prism unit 20 may be attached to the cubic prism 10 by other detachable bonding or adsorption methods.

[0046] Furthermore, the prism unit 20 is a heptagonal prism.

[0047] Furthermore, the prism unit 20 also includes an upper reflecting surface 24, a middle reflecting surface 25 and a lower reflecting surface 26. The angle between the incident surface 22 and the upper reflecting surface 24 is 45°, and the angle between the upper reflecting surface 24 and the exit surface 23 is 135°; the angle between the exit surface 23 and the lower reflecting surface 26 is 90°+a°, the angle between the lower reflecting surface 26 and the measuring surface 21 is 90°-a°, the angle between the measuring surface 21 and the middle reflecting surface 25 is 90°+b°, and the angle between the middle reflecting surface 25 and the incident surface is 270°-b°, wherein a is greater than 0° and less than 45°, and b=45°-a°.

[0048] The fixing unit 30 is used to provide installation support, such as installing and supporting the prism unit 20 and the laser unit 40 .

[0049] Among them, the laser unit 40 is used to provide light. When the light emitted by the laser unit 40 is perpendicular to the incident surface 22 of the prism unit 20, the light emitted by the laser unit 40 can be emitted perpendicular to the exit surface 23 of the prism unit 20, so that the theodolite can judge whether the collimating surface to be measured of the cubic prism 10 is collimated according to whether the light emitted from the exit surface 23 of the prism unit 20 is horizontal.

[0050] In some embodiments, the fixing unit 30 includes two sub-fixing elements 31, both of which are L-shaped structures, whose longitudinal parts are fixedly connected to the two ends of the prism unit 20, and whose transverse parts are fixedly connected to the laser unit 40.

[0051] Furthermore, the longitudinal portions of the two sub-fixing elements 31 are respectively bonded to the two ends of the prism unit 20 , and the transverse portions of the two sub-fixing elements 31 are fixedly connected to the laser unit 40 by interference fit.

[0052] In some embodiments, the transverse portions of the two sub-fixing elements 31 may be connected to each other.

[0053] The longitudinal portion of the sub-fixing element 31 is the longitudinal structure of the fixing unit 30 when it is placed vertically, and the transverse portion of the sub-fixing element 31 is the transverse structure of the fixing unit 30 when it is placed vertically.

[0054] In some embodiments, when the fixing unit 30 is placed horizontally, the longitudinal portion of the sub-fixing element 31 is the first horizontal structure when the fixing unit 30 is placed horizontally, the horizontal portion of the sub-fixing element 31 is the second horizontal structure when the fixing unit 30 is placed horizontally, and the first horizontal portion is arranged perpendicular to the second horizontal portion.

[0055] In some embodiments, the cubic prism alignment aid further includes a clamping unit 50, which includes two clamping parts 51 rotatably connected at their head ends, a tail end of one clamping part 51 rotatably connected to the longitudinal portion of the fixing unit 30, and a plate element 52 rotatably provided at the tail end of the other clamping part 51. When the measuring surface 21 of the prism unit 20 is pressed against the collimation surface to be measured of the cubic prism 10, the plate element 52 is pressed against the opposite surface of the cubic prism 10 under the action of the clamping unit 50, and the opposite surface is the plane in the prism unit 20 opposite to the collimation surface to be measured.

[0056] The clamping unit 50 is used to clamp the fixing structure and the prism unit 20 on the cubic prism 10 .

[0057] The clamping unit 50 can be clamped manually, or an elastic element can be used to form an elastic clamping structure with the two clamping parts 51.

[0058] Preferably, the two clamping parts 51 have a tendency to approach each other at their tail ends through the first elastic element, so that the clamping parts 51 clamp the plate element 52 to the opposite surface of the cubic prism 10, and fix the fixing unit 30 and the prism unit 20 to the collimation surface to be measured of the cubic prism 10.

[0059] For example, when the clamping portion 51 is an arc-shaped structure, its head end is hinged, and the two ends of the spring element are correspondingly connected to the middle parts of the two clamping portions 51, so that under the pulling of the spring element, the tail ends of the two clamping portions 51 tend to approach each other, so that the clamping unit 50 can clamp the plate element 52 and the fixing unit 30 to the cubic prism 10 under the action of the spring element.

[0060] In some embodiments, the head end of the clamping portion 51 extends away from the tail end of the clamping portion 51 to form a manipulation portion 53 , and the two manipulation portions 53 formed at the head ends of the two clamping portions 51 are disposed opposite to each other.

[0061] For example, the clamping portion 51 can be roughly set to an S-shaped structure, and then the middle part of one clamping portion 51 is hinged to the middle part of another clamping portion 51, so that the opening and closing of the tail end of the clamping portion 51 can be controlled by the operating portion 53 connected to the head end of the clamping portion 51.

[0062] Preferably, a second elastic element 54 is provided between the two operating parts 53 , and the second elastic element 54 causes the two operating parts 53 to have a tendency to move away from each other, so that the tail ends of the two clamping parts 51 have a tendency to move closer to each other.

[0063] For example, the second elastic element 54 is a spring, and the two ends of the spring are respectively connected to the two operating parts 53. The two operating parts 53 are opened under the action of the spring, and when the two operating parts 53 are opened, the tail ends of the clamping parts 51 tend to approach each other so as to clamp the plate element 52 to the opposite surface of the cubic prism 10 and clamp the prism unit 20 to the collimation surface to be measured of the cubic prism 10.

[0064] The method of using the utility model is as follows:

[0065] When measuring the collimating surface to be measured of the cubic prism 10, the worker squeezes the two operating parts 53 so that the two operating parts 53 move closer to each other to open the two clamping parts 51;

[0066] The cubic prism 10 is placed between the two clamping parts 51. The staff then releases the two operating parts 53. The two operating parts 53 move away from each other under the action of the second elastic element 54, so that the two clamping parts 51 move closer to each other. The two clamping parts 51 make the plate element 52 close to the opposite surface of the cubic prism 10, and the prism unit 20 is close to the collimation surface to be measured of the cubic prism 10.

[0067] The laser unit 40 is turned on, and the light emitted by the laser unit 40 is reflected and refracted by the prism unit 20 and then emitted from the exit surface 23. Then, the theodolite determines whether the collimating surface to be measured of the cubic prism 10 is collimated based on the light emitted from the exit surface 23.

[0068] The collimation auxiliary device for the cubic prism 10 of the present invention can use the clamping force provided by the clamping unit 50 to press the measuring surface 21 of the prism unit 20 against the collimation surface to be measured of the cubic prism 10. The laser unit 40 emits laser light, which is perpendicular to the incident surface 22 and is emitted from the exit surface 23 after multiple reflections from the prism unit 20, with the same laser light as the normal direction of the side surface of the cubic prism 10, thereby realizing the visualization of the normal optical axis of a point on the measured surface of the cubic prism 10.

[0069] The utility model is suitable for auxiliary aiming of theodolite during the precision measurement of optics and cubic prism 10 in the aerospace field, solves the problem of difficult alignment of theodolite when the measured cubic prism 10 is small in size and the distance between the measured prism and the precision measurement equipment is far, and greatly improves the alignment efficiency of theodolite and cubic prism 10.

[0070] In this specification, references to the same or similar parts between the various embodiments can be made to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiments described later, since they correspond to the methods, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0071] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A cubic prism collimation aid, applied to a cubic prism, characterized in that: include: A prism unit, wherein the measuring surface, incident surface, and exit surface of the prism unit are arranged parallel to each other, and when light enters the prism unit perpendicularly to the measuring surface, the light can be emitted perpendicularly to the exit surface of the prism unit, and the measuring surface of the prism unit is used to press against the collimating surface to be measured of the cubic prism; A fixing unit, the fixing unit having an L-shaped structure, a longitudinal portion of which is fixedly connected to the side wall of the prism unit, and a transverse portion of which is arranged corresponding to the cubic prism when the measuring surface of the prism unit is pressed against the collimating surface to be measured of the cubic prism; A laser unit is provided on the transverse portion of the fixing unit, and the light emitted by the laser unit is perpendicular to the incident surface of the prism unit.

2. The cubic prism collimation aid according to claim 1, characterized in that: The fixing unit includes: The two sub-fixing elements are both L-shaped structures, with their longitudinal parts respectively fixedly connected to the two ends of the prism unit, and their transverse parts respectively fixedly connected to the laser unit.

3. The cubic prism collimation aid according to claim 2, characterized in that: The longitudinal parts of the two sub-fixing elements are respectively connected to the two ends of the prism unit by adhesive bonding, and the transverse parts of the two sub-fixing elements are fixedly connected to the laser unit by interference fitting.

4. The cubic prism collimation aid according to claim 1, wherein: The prism unit is a heptagonal prism.

5. The cubic prism collimation aid according to claim 1, wherein: The prism unit also includes an upper reflection surface, a middle reflection surface and a lower reflection surface. The incident surface and the upper reflection surface have an included angle of 45°, the upper reflection surface and the exit surface have an included angle of 135°, the exit surface and the lower reflection surface have an included angle of 90°+a°, the lower reflection surface and the measuring surface have an included angle of 90°-a°, the measuring surface and the middle reflection surface have an included angle of 90°+b°, and the middle reflection surface and the incident surface have an included angle of 270°-b°, wherein a is greater than 0° and less than 45°, and b=45°-a°.

6. The cubic prism collimation aid according to any one of claims 1 to 5, characterized in that: Also includes: A clamping unit, wherein the clamping unit includes two clamping parts rotatably connected at their head ends, the tail end of one of the clamping parts is rotatably connected to the longitudinal portion of the fixing unit, and the tail end of the other clamping part is rotatably provided with a plate element. When the measuring surface of the prism unit is pressed against the collimating surface to be measured of the cubic prism, the plate element is pressed against the opposite surface of the cubic prism under the action of the clamping unit. The opposite surface is the plane in the prism unit opposite to the collimating surface to be measured.

7. The cubic prism collimation aid according to claim 6, characterized in that: The two clamping parts are arranged so that the tail ends of the two clamping parts tend to approach each other through the first elastic element.

8. The cubic prism collimation aid according to claim 6, characterized in that: The head end of the clamping portion extends in a direction away from the tail end of the clamping portion to form a manipulation portion, and the two manipulation portions formed at the head ends of the two clamping portions are arranged opposite to each other.

9. The cubic prism collimation aid according to claim 8, characterized in that: A second elastic element is provided between the two operating parts. The second elastic element causes the two operating parts to have a tendency to move away from each other, so that the tail ends of the two clamping parts have a tendency to move closer to each other.

10. The cubic prism collimation aid according to claim 9, characterized in that: The second elastic element is a spring.

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