Light splitting unit and laser point line module with two 180-degree two-side positioning points

Abstract

A light splitting unit and a laser point line module with two 180-degree two-side positioning points comprise a right-angle prism arranged on a main light path of a light outlet of a laser point light source, the axis of the right-angle prism is parallel to the axis of the main light path and does not coincide with the axis of the main light path, and the cross section of the right-angle prism is gradually increased in the direction of the main light path; the cylindrical mirror is arranged in the extending direction of a main light path of a light outlet of the laser point light source, the axis of the cylindrical mirror is perpendicular to the axis of the main light path and does not intersect with the axis of the main light path, and the included angles between the axis of the cylindrical mirror and the two right-angle faces of the right-angle prism are both 45 degrees; the maximum cross section of the rectangular prism and the axial cross section, perpendicular to the main light path, of the cylindrical mirror are not overlapped in the direction of the main light path. Through reasonable arrangement of component structures, integral forming, simple structural design and easy implementation, the structure of the laser gradienter is simplified, high-precision laser line positioning and laser point positioning are realized, the cost is reduced, and the precision stability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical testing, and particularly relates to a beam splitting unit and a laser dot-line module with two 180-degree positioning points on both sides. Background Art

[0002] In the construction and decoration markets, laser lines or laser dots are widely used for precise positioning. However, existing laser levels mostly use line modules or multi-point modules in combination, which results in complex instrument structures, high costs, and difficult maintenance. For the market demand for laser line positioning and simultaneous positioning with two 180-degree positioning points on both sides, the existing multi-module combination structure solutions also have the problem of low accuracy and stability. Therefore, there is an urgent need to develop a new module to meet the market demand. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to provide a beam splitting unit and a laser dot-line module with two 180-degree positioning points on both sides, so as to solve the problems of insufficient accuracy and stability of existing multi-module laser line positioning and 180-degree positioning points on both sides, as well as complex structure and high cost.

[0004] To achieve the above purpose, the technical solutions adopted by the utility model include:

[0005] A beam splitting unit includes a right-angle prism arranged on the main optical path of the light output port of a laser point light source. The axis of the right-angle prism is parallel to the axis of the main optical path and does not coincide with the axis of the main optical path. The cross-section of the right-angle prism gradually increases along the main optical path direction. It also includes a cylindrical lens arranged in the extending direction of the main optical path of the light output port of the laser point light source. The axis of the cylindrical lens is perpendicular to the axis of the main optical path and does not intersect with the axis of the main optical path. The angle between the axis of the cylindrical lens and the two right-angle faces of the right-angle prism is 45°; the maximum cross-section of the right-angle prism and the axial cross-section of the cylindrical lens perpendicular to the main optical path do not overlap with each other along the main optical path direction.

[0006] A laser dot-line module with two 180-degree positioning points on both sides includes a laser point light source and also includes a beam splitting unit, and the beam splitting unit is the beam splitting unit disclosed in this application.

[0007] Furthermore, it also includes a housing, which is a cylindrical structure with openings at both ends and a hollow interior. The laser point light source is coaxially arranged in the inner cavity at one end of the housing; it also includes a beam splitting support frame for fixedly arranging the right-angle prism in the inner cavity at the other end of the housing. The housing is coaxially provided with light output holes on the two beam splitting light beams of the right-angle prism; it also includes a cylindrical lens fixing base for fixedly arranging the cylindrical lens on the outer side of the other end of the housing.

[0008] Preferably, the laser point light source includes a laser tube and a collimating lens coaxially arranged in sequence along the main optical path direction.

[0009] Compared with the prior art, the advantages of the present utility model are as follows: A beam splitting unit of the present utility model and a laser dot-line module with two 180-degree side positioning points are integrally formed through reasonable setting of component structures. The structural design is simple and easy to implement, simplifying the structure of the laser level. At the same time, high-precision laser line positioning and laser dot positioning are achieved, reducing costs and improving precision stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present utility model, but do not constitute a limitation to the present utility model. In the drawings:

[0011] Figure 1 is a schematic structural diagram of the beam splitting unit of the present utility model;

[0012] Figure 2 is a perspective view of the laser dot-line module of the present utility model with two 180-degree side positioning points;

[0013] Figure 3 is Figure 2 an axial sectional view of

[0014] Figure 4 is a usage photo view of the laser dot-line module of the present utility model with two 180-degree side positioning points.

[0015] Each label in the figure represents:

[0016] a laser light curtain, b split light beam;

[0017] A laser point light source, B beam splitting unit, C beam splitting support frame, D cylindrical lens fixing seat, E housing;

[0018] A1 collimating lens, A2 laser tube;

[0019] B1 right-angle prism, B2 cylindrical lens;

[0020] E1 light exit hole. SPECIFIC EMBODIMENTS

[0021] The present utility model is not limited to the following specific embodiments. Any equivalent transformation based on the technical solution of the present application falls within the protection scope of the present utility model.

[0022] It should be noted that the directional terms mentioned herein are all consistent with the specific directions on the paper surface of the specification drawings or the corresponding directions in the space shown in the drawings; all components and devices in the present utility model, unless otherwise specified, all adopt the components and devices known in the prior art.

[0023] Embodiment 1

[0024] A beam splitting unit includes a right-angle prism B1 disposed on the main optical path of the light exit of the laser point light source A. The axis of the right-angle prism B1 is parallel to the axis of the main optical path and does not coincide with the axis of the main optical path. The cross-section of the right-angle prism B1 gradually increases along the main optical path direction. It also includes a cylindrical lens B2 disposed in the extending direction of the main optical path of the light exit of the laser point light source A. The axis of the cylindrical lens B2 is perpendicular to the axis of the main optical path and does not intersect with the axis of the main optical path. The axis of the cylindrical lens B2 forms an angle of 45° with each of the two right-angle faces of the right-angle prism B1. The maximum cross-section of the right-angle prism B1 and the axial section of the cylindrical lens B2 perpendicular to the main optical path do not overlap with each other along the main optical path direction.

[0025] Its function is as follows: The laser point light source A emits a laser beam. The cross-section of the laser beam is elliptical. A part of the elliptical light spot of the laser beam directly irradiates on the two right-angle faces of the right-angle prism B1 and is reflected into two split light beams b, and two laser points distributed at 180 degrees are formed. At the same time, another part of the elliptical light spot of the laser beam directly irradiates on the cylindrical lens B2, and a laser light curtain a is formed. Overall, a laser light curtain a and two laser points located on both sides of the laser light curtain a and being 180 degrees apart from each other are formed. The overall structure design is simple and easy to implement, and high-precision laser line positioning and laser point positioning can be achieved.

[0026] In this embodiment, a part of the elliptical light spot of the laser beam directly irradiating on the two right-angle faces of the right-angle prism B1 accounts for about 20% of the total light energy. Another part of the elliptical light spot of the laser beam directly irradiating on the cylindrical lens B2 accounts for about 70% of the total light energy.

[0027] Embodiment 2

[0028] A laser point-line module with two 180-degree side positioning points includes a laser point light source A and also includes a beam splitting unit B. The beam splitting unit B is the beam splitting unit disclosed in Embodiment 1.

[0029] Its function is as follows: The laser point light source A emits a laser beam. A part of the laser beam is reflected by the two right-angle faces of the right-angle prism B1 into two split light beams b, and two laser points are formed. At the same time, another part of the laser beam directly irradiates on the cylindrical lens B2, and a laser light curtain a is formed. Overall, a laser light curtain a and two laser points located on both sides of the laser light curtain a and being 180 degrees apart from each other are formed. The overall is integrally formed. The structure design is simple and easy to implement, simplifies the structure of the laser level, and at the same time realizes high-precision laser line positioning and laser point positioning, reduces costs and improves precision stability.

[0030] This embodiment further includes a housing E, which is a cylindrical structure with openings at both ends and a hollow interior. The laser point source A is coaxially arranged in the inner cavity at one end of the housing E. It further includes a beam splitting support frame C that fixedly mounts the right-angle prism B1 in the inner cavity at the other end of the housing E. The housing E is provided with light output holes E1 coaxially on the two-way split light beams b of the right-angle prism B1. It further includes a cylindrical mirror fixing base D that fixedly mounts the cylindrical mirror B2 on the outer side of the other end of the housing E, making the overall assembly process simple and improving the assembly efficiency.

[0031] The laser point source A of this embodiment includes a laser tube A2 and a collimating lens A1 that are coaxially arranged in sequence along the main optical path direction. The laser tube A2 and the collimating lens A1 of this embodiment can also be directly coaxially arranged in the coaxial mounting hole of the housing E and combined with the housing to form the laser point source A.

[0032] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0033] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.

[0034] In addition, any combination can be made between the various different embodiments disclosed in this solution, as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content invented by the present disclosure.

Claims

1. A spectroscopic unit, characterized in that, It includes a right-angle prism (B1) disposed on the main optical path of the light exit of the laser point light source (A). The axis of the right-angle prism (B1) is parallel to the axis of the main optical path and does not coincide with the axis of the main optical path. The cross-section of the right-angle prism (B1) gradually increases along the main optical path direction; It further includes a cylindrical lens (B2) disposed in the extending direction of the main optical path of the light exit of the laser point light source (A). The axis of the cylindrical lens (B2) is perpendicular to the axis of the main optical path and does not intersect with the axis of the main optical path. The angle between the axis of the cylindrical lens (B2) and the two right-angle faces of the right-angle prism (B1) is 45°; The maximum cross-section of the right-angle prism (B1) and the axial cross-section of the cylindrical lens (B2) perpendicular to the main optical path do not overlap with each other along the main optical path direction.

2. A laser dot line module with two 180-degree side positioning points, including a laser dot light source (A), characterized in that, It further includes a beam splitting unit (B), and the beam splitting unit (B) is the beam splitting unit described in claim 1.

3. The laser dot line module with two 180-degree side positioning points according to claim 2, wherein It further includes a housing (E), and the housing (E) is a cylindrical structure with openings at both ends and a hollow interior. The laser point light source (A) is coaxially disposed in the inner cavity at one end of the housing (E); It further includes a beam splitting support frame (C) for fixedly disposing the right-angle prism (B1) in the inner cavity at the other end of the housing (E). Light exit holes (E1) are coaxially disposed on the two-way split light beams (b) of the housing (E) where the right-angle prism (B1) is located; It further includes a cylindrical lens fixing seat (D) for fixedly disposing the cylindrical lens (B2) on the outer side of the other end of the housing (E).

4. The laser dot line module with two 180-degree side positioning points according to any one of claims 2 or 3, characterized in that The laser point light source (A) includes a laser tube (A2) and a collimating lens (A1) coaxially arranged in sequence along the main optical path direction.

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