CN219266687U - Multi-line segment surface type reflecting conical mirror and laser module - Google Patents
Multi-line segment surface type reflecting conical mirror and laser module Download PDFInfo
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- CN219266687U CN219266687U CN202320584389.3U CN202320584389U CN219266687U CN 219266687 U CN219266687 U CN 219266687U CN 202320584389 U CN202320584389 U CN 202320584389U CN 219266687 U CN219266687 U CN 219266687U
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Abstract
The utility model provides a multi-line section type reflecting cone mirror and a laser module, wherein a bus of the multi-line section type reflecting cone mirror is set to be a variable-angle multi-line section type from the section view, and the bus comprises a plurality of line sections which are connected with each other; from the direction of the cone top to the cone bottom, the line segment near the cone bottom is deflected outwards by a certain angle relative to the line segment near the cone top in two adjacent line segments. A laser module, comprising: the device comprises a laser seat, a laser emitter, a glass cover frame, a glass cover, a light shield and a reflector module, wherein the reflector module comprises a mounting cover and a multi-line section surface type reflecting cone mirror. The utility model adopts the design of the multi-line segment surface reflecting conical mirror, can realize collimation of parallel light, is easy to install and debug, and does not need to use an expensive aspheric lens.
Description
Technical Field
The utility model relates to the field of laser measuring instruments, in particular to a multi-line section surface type multi-angle reflecting cone mirror and a laser module.
Background
Laser is another important utility model of mankind after nuclear power, computer, semiconductor for the 20 th century, called "fastest knife", "most accurate ruler", "brightest light". Laser applications are very wide and include laser marking, laser welding, laser cutting, fiber optic communication, laser ranging, and the like. The laser marking instrument is an instrument for correcting the vertical and horizontal by using laser, and is mainly used for building construction such as interior decoration, door and window installation, hanging line, quality inspection, engineering supervision and the like.
In the prior art, a laser transmitter of a laser light line instrument emits a light beam with a certain divergence angle, and the light beam is shaped by an aspheric lens and then reflected by a 360-degree reflecting cone mirror to project parallel straight line light with equal spacing. As shown in fig. 1, in a laser module of the related art, a laser transmitter transmits laser to an aspherical lens, the laser is refracted by the aspherical lens to emit incident light, and the incident light irradiates a mirror and then reflected light is emitted from an exit hole. The aspherical lens has higher production cost, and the popularization rate of the 360-degree laser module in the market is limited to a great extent. The light reflection structure is relatively complex, and in the module assembly process, the coincidence degree of the axis of the conical mirror and the axis of the collimated laser beam needs to be adjusted, so that the uniformity of the distance and the reflection angle of the reflected light is ensured, the expertise is high, and the adjustment is needed by skilled personnel. In addition, due to the fact that the instrument is poor in use environment, vibration and the like are easy to generate in the use process, the problems of offset of the adjusted aspheric lens and the cone lens and the like are easy to be caused.
In view of the above problems, there has been proposed a laser module without an aspherical lens in which the cross-sectional shape of a reflecting cone mirror is designed as a parabolic shape to improve the collimation effect on reflected light, but such a structure has extremely high requirements for installation and debugging, and the collimation effect cannot be achieved once the focus of the parabolic shape is misaligned.
The utility model aims to solve the problems, and provides a multi-line section surface type reflecting cone mirror and a laser module, which can realize collimation of parallel light, are easy to install and debug, and do not need to use an expensive aspheric lens.
Disclosure of Invention
The utility model provides a multi-line section surface type multi-angle reflector and a laser module, which can achieve the reflected light meeting the standard by changing the surface type of the reflecting surface of a conical mirror, thereby reducing the cost, simplifying the module debugging step and facilitating the operation of personnel.
In order to achieve the above object, according to a first aspect of the present utility model, there is provided a multi-line segment type reflecting cone mirror, wherein a bus of the multi-line segment type reflecting cone mirror is set to be a variable angle multi-line segment type from a cross-sectional view, and the bus includes a plurality of line segments connected to each other; from the direction of the cone top to the cone bottom, the line segment near the cone bottom is deflected outwards by a certain angle relative to the line segment near the cone top in two adjacent line segments.
Furthermore, the multi-line segment surface reflecting conical mirror has the same deflection angle in all two adjacent line segments.
Further, the mirror surface of the multi-line section surface type reflecting conical mirror is a mirror surface with the roughness of the reflecting surface less than 2nm, which is obtained by ultra-precise turning.
An embodiment of the second aspect of the present utility model provides a laser module, including: the laser seat is internally provided with a through hole, a step limit is arranged in the through hole at one end of the laser seat, and an assembly hole is arranged in the through hole at the other end of the laser seat; the laser transmitter is arranged in the assembly hole at the other end of the laser seat; a glass cover frame, wherein a through hole is arranged in the glass cover frame, one end of the glass cover frame is provided with a convex outer edge which is matched with the top of the laser seat, the side wall of the glass cover frame is matched with the inner wall of the laser seat; the middle part of the glass cover is provided with a through hole, and the glass cover is arranged in a concave hole with step limit of the glass cover frame; the light shield is cylindrical, a through hole is formed in the middle of the light shield, the diameter of the through hole of the light shield is larger than that of the glass shield, and a light outlet hole is formed in the light shield; the reflector module comprises a mounting cover and the multi-line section type reflecting conical mirror according to the embodiment of the first aspect, the conical top of one end of the multi-line section type reflecting conical mirror faces the laser transmitter, the other end of the multi-line section type reflecting conical mirror is arranged on the mounting cover, the axis of the multi-line section type reflecting conical mirror and the circle center of the mounting cover are located on the same axis, the diameter length of the conical bottom of the multi-line section type reflecting conical mirror is the same as the diameter length of the through hole of the glass cover, and the multi-line section type reflecting conical mirror is arranged in the glass cover.
Further, the outer part of the glass cover frame is connected with the laser seat through threads.
Further, the surfaces of the glass cover frame and the laser seat are provided with light absorption materials.
Further, laser emitted by the laser emitter irradiates the multi-line section surface type reflecting cone mirror to be reflected, and reflected light is emitted from the light emitting hole of the light shield.
Compared with the prior art, the utility model provides the multi-line section type reflecting cone mirror and the laser module, wherein the bus of the multi-line section type reflecting cone mirror is set to be a variable-angle multi-line section from the section angle, and the bus comprises a plurality of mutually connected line sections; from the direction of the cone top to the cone bottom, the line segment near the cone bottom is deflected outwards by a certain angle relative to the line segment near the cone top in two adjacent line segments. In all the two adjacent line segments, the deflection angles of the two adjacent line segments are the same, so that the parallel light can be collimated, the installation and the debugging are easy, and expensive aspheric lenses are not needed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a prior art multi-segment faceted reflective cone mirror and laser module;
FIG. 2 is a schematic diagram of light reflection of a multi-line segment surface reflecting cone mirror according to an embodiment of the first aspect of the present utility model; and
fig. 3 is an overall schematic diagram of a laser module according to a second embodiment of the utility model.
Reference numerals:
1. a reflector module; 101. a mounting cover; 102. a multi-line segment surface type reflecting cone mirror; 1021. a first section; 1022. a second section; 1023. a third section;
2. a laser seat; 3. a laser emitter; 4. a glass cover frame; 5. a glass cover; 6. a light shield; 7. incident light; 8. an aspherical lens; 9. a light outlet hole; alpha, a first included angle; and beta is a second included angle.
Detailed Description
For a further understanding of the objects, construction, features, and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.
As shown in fig. 2, there is provided a multi-line segment type reflecting cone mirror according to an embodiment of the first aspect of the present utility model, in which a bus bar of the multi-line segment type reflecting cone mirror 102 is set to be a variable angle multi-line segment type from a cross-sectional view, the bus bar including a plurality of line segments connected to each other; from the direction of the cone top to the cone bottom, the line segment near the cone bottom is deflected outwards by a certain angle relative to the line segment near the cone top in two adjacent line segments. Further, in all the adjacent two line segments, the deflection angles of the adjacent two line segments are the same. The contents shown in fig. 2 correspond to the circled portions in fig. 3. As shown in fig. 2, the first angle α is formed between the extension dashed line of the first section 1021 and the second section 1022, and the second angle β is formed between the extension dashed line of the second section 1022 and the third section 1023, and the angles of the first angle α and the second angle β may be the same. By setting the multi-line segment type reflecting cone mirror 102 to be a variable angle multi-line segment type, collimated parallel rays can be obtained by reflection of the multi-line segment type reflecting cone mirror without using an aspherical lens.
Further, the mirror surface of the multi-line segment surface type reflecting conical mirror 102 is a mirror surface with the roughness of the reflecting surface less than 2nm obtained by ultra-precise turning. The multi-line segment surface type reflecting conical mirror can adopt aluminum alloy, copper alloy and iron-based nickel plating pieces, so that the durability and the surface reflectivity of the multi-line segment surface type reflecting conical mirror are enhanced, and the higher processing precision ensures the reflecting angle of the reflecting surface of the multi-line segment surface type reflecting conical mirror.
As shown in fig. 3, there is provided a laser module according to a second aspect of the present utility model, including: the laser seat 2, the inside of the laser seat 2 is provided with a through hole, the through hole at one end of the laser seat 9 is provided with a step limit, and the through hole at the other end of the laser seat is provided with an assembly hole; the laser emitter 3 is arranged in the assembly hole at the other end of the laser seat 2; the glass cover frame 4 is internally provided with a through hole, one end of the glass cover frame 4 is provided with a convex outer edge which is matched with the top of the laser seat 2, one end of the glass cover frame 4 provided with the convex outer edge is provided with a concave hole with step limit, and the side wall of the glass cover frame 4 is matched with the inner wall of the laser seat 2; the glass cover 5 is provided with a through hole in the middle of the glass cover 5, and the glass cover 5 is arranged in a concave hole with step limit of the glass cover frame 4; the light shield 6 is cylindrical, a through hole is formed in the middle of the light shield 6, the diameter of the through hole of the light shield 6 is larger than that of the glass cover 5, and the light shield 6 is provided with a light outlet hole 9; the reflector module 1 comprises a mounting cover 101 and a multi-line section type reflecting conical mirror 102 provided by the embodiment of the first aspect of the utility model, wherein the conical top of one end of the multi-line section type reflecting conical mirror 102 faces the laser emitter 3, the other end of the multi-line section type reflecting conical mirror 102 is arranged on the mounting cover 101, the axis of the multi-line section type reflecting conical mirror 102 and the circle center of the mounting cover 101 are positioned on the same axis, the diameter length of the conical bottom of the multi-line section type reflecting conical mirror 102 is the same as the diameter length of the through hole of the glass cover 5, and the multi-line section type reflecting conical mirror 102 is arranged in the glass cover 5. The laser reflector 3 emits laser and is reflected by the surface of the multi-line section type reflecting cone mirror 102 to obtain collimated parallel rays.
Further, the outer part of the glass cover frame 4 is connected with the laser seat 2 through threads. The lifting and the lowering of the glass cover frame are controlled by adjusting the screw threads.
Furthermore, the glass frame 4 and the laser seat 2 can be made of aluminum alloy materials, and light absorbing materials are arranged on the surfaces of the glass frame 4 and the laser seat 2. The black chromium plating on the surface of the workpiece can be used as a light absorption material, and the light absorption material absorbs incident light scattered at the edge of the workpiece, so that a normally-refracted light path is prevented from being damaged. The light shield 6 can be made of aluminum alloy material and is coated with black chromium, and is sleeved outside the glass shield 5 to prevent laser from forming scattering after being refracted by glass, and the line width and the line quality are affected.
Further, the laser emitted from the laser emitter 3 irradiates the multi-line surface reflecting cone mirror 102 to reflect, and the reflected light is emitted from the light emitting hole 9 of the light shield 6. The reflected light is reflected out from the specific light outlet hole, so as to achieve the purpose of instrument measurement.
In the embodiment of the utility model, laser is directly projected onto the reflecting surface of the 360-degree conical mirror, and a middle straightening lens and related structures are removed, so that the surface type of the reflecting surface of the conical mirror is redesigned. The common conical mirror reflection line surface bus is a 45-degree straight line, and the conical mirror bus uses variable-angle multi-line segments. The laser beam has the characteristic of divergence angle, the divergence angle is between 3.8mrad and 7.5mrad after actual detection, and the total divergence angle is not changed no matter how far the projection is. According to the law of reflection of light, the incident angle is equal to the reflection angle, and the included angle of the incident light ray and the plane is equal to the included angle of the reflected light ray and the plane. Although the total angle of laser beam divergence does not change, the angle of divergence with respect to the optical axis becomes smaller as the spot center is closer inside the laser beam. And (3) redesigning a reflecting bus of the conical mirror, wherein the angle of a reflecting surface is gradually changed by extending outwards from the central line of the conical mirror, so as to form a reflecting bus in a multi-line-segment form, and the width H of each line segment is controlled to be 50-100 mu m and the angle is reduced by 0.1mrad after testing. The reflection surface is used for reflecting the light, the reflected light of each line segment is slightly scattered, and the other advantage is found in practical application that the scattered reflected light of each line segment can form alternate interference images inside the light, the line outgoing quality is more uniform, and the conditions such as line breakage in the line can not occur on the projection surface. The total price is reduced by 1/5 in terms of cost because of the fewer aspheric lenses. And the adjusting mechanism is reduced, so that the assembly is more convenient. The line quality is more even, and the conditions such as broken lines do not appear in 360 scope.
In the multi-line section type reflecting cone mirror provided by the embodiment of the first aspect of the utility model, the bus of the multi-line section type reflecting cone mirror is set to be a variable angle multi-line section type from the section view, and the bus comprises a plurality of mutually connected line sections; from the direction of the cone top to the cone bottom, the line segment near the cone bottom is deflected outwards by a certain angle relative to the line segment near the cone top in two adjacent line segments. In all adjacent two line segments, the deflection angles of the adjacent two line segments are the same, so that the parallel light can be collimated, the installation and debugging are easy, and expensive aspheric lenses are not needed.
The laser module of the second aspect of the embodiment of the utility model adopts the design of the multi-line segment type reflecting cone mirror of the first aspect, and the bus of the multi-line segment type reflecting cone mirror is set to be a variable angle and multi-line segment type so as to ensure that different reflected lights after different incident lights are refracted are parallel, thereby reducing the difficulty of operating instruments, avoiding the use of aspheric lenses, avoiding the complicated calibration and saving the production cost and the operation cost.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer" orientation or positional relationship are merely for convenience of description and to simplify the description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. The multi-line section type reflecting cone mirror is characterized in that a bus of the multi-line section type reflecting cone mirror is arranged to be a variable-angle multi-line section from a section view, and the bus comprises a plurality of line sections which are connected with each other; from the direction of the cone top to the cone bottom, the line segment near the cone bottom is deflected outwards by a certain angle relative to the line segment near the cone top in two adjacent line segments.
2. The multi-line segment faceted reflective cone mirror of claim 1, wherein the deflection angles of adjacent two line segments are the same in all adjacent two line segments.
3. The multi-line segment type reflecting cone mirror according to claim 1, wherein the mirror surface of the multi-line segment type reflecting cone mirror is a mirror surface with the roughness of the reflecting surface being less than 2nm, which is obtained by ultra-precise turning.
4. A laser module, comprising:
the laser seat is internally provided with a through hole, a step limit is arranged in the through hole at one end of the laser seat, and an assembly hole is arranged in the through hole at the other end of the laser seat;
the laser transmitter is arranged in the assembly hole at the other end of the laser seat;
the laser module is characterized by further comprising:
a glass cover frame, wherein a through hole is arranged in the glass cover frame, one end of the glass cover frame is provided with a convex outer edge which is matched with the top of the laser seat, the side wall of the glass cover frame is matched with the inner wall of the laser seat;
the middle part of the glass cover is provided with a through hole, and the glass cover is arranged in a concave hole with step limit of the glass cover frame;
the light shield is cylindrical, a through hole is formed in the middle of the light shield, the diameter of the through hole of the light shield is larger than that of the glass shield, and a light outlet hole is formed in the light shield; and
the reflector module comprises a mounting cover and the multi-line section type reflecting conical mirror according to claim 2, wherein the conical top of one end of the multi-line section type reflecting conical mirror faces the laser transmitter, the other end of the multi-line section type reflecting conical mirror is arranged on the mounting cover, the axis of the multi-line section type reflecting conical mirror and the circle center of the mounting cover are located on the same axis, the diameter length of the conical bottom of the multi-line section type reflecting conical mirror is the same as the diameter length of the through hole of the glass cover, and the multi-line section type reflecting conical mirror is arranged in the glass cover.
5. The laser module of claim 4, wherein the glass cover frame is externally threaded to the laser mount.
6. The laser module of claim 4, wherein the glass cover frame and the laser mount surface are provided with a light absorbing material.
7. The laser module of claim 4, wherein the laser emitted by the laser emitter irradiates the multi-line-section surface reflecting cone mirror to reflect, and the reflected light is emitted from the light emitting hole of the light shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320584389.3U CN219266687U (en) | 2023-03-23 | 2023-03-23 | Multi-line segment surface type reflecting conical mirror and laser module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320584389.3U CN219266687U (en) | 2023-03-23 | 2023-03-23 | Multi-line segment surface type reflecting conical mirror and laser module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219266687U true CN219266687U (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320584389.3U Active CN219266687U (en) | 2023-03-23 | 2023-03-23 | Multi-line segment surface type reflecting conical mirror and laser module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219266687U (en) |
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- 2023-03-23 CN CN202320584389.3U patent/CN219266687U/en active Active
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