CN216246804U - Laser power measuring instrument - Google Patents
Laser power measuring instrument Download PDFInfo
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- CN216246804U CN216246804U CN202122906493.3U CN202122906493U CN216246804U CN 216246804 U CN216246804 U CN 216246804U CN 202122906493 U CN202122906493 U CN 202122906493U CN 216246804 U CN216246804 U CN 216246804U
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Abstract
The application provides a laser power measuring instrument, laser power measuring instrument includes dynamometer, mount pad and divergent mirror. The power meter has a measuring surface for being irradiated by the laser beam. The mount pad is connected with the dynamometer, and the mount pad has the first clear aperture that supplies laser beam to pass through. The diverging mirror is arranged on the mounting seat, is positioned on a propagation path of the laser beam propagating in the first light through hole and is used for diffusing the laser beam before the laser beam reaches the measuring surface, so that the diameter of a light spot irradiated on the measuring surface by the laser beam is increased. Through the increase shine in the facula diameter size on measuring the face, reduce and reach the laser power density on measuring the face, laser beam is not fragile power meter, the long service life of power meter, and use cost is low, measures the accuracy height.
Description
Technical Field
The utility model relates to the technical field of laser power measurement, in particular to a laser power measuring instrument.
Background
Under the trend of high-speed development of industrial technology, various metal additive manufacturing methods are continuously emerging, selective laser melting technologies (SLM, SLS, laser metal direct deposition technology (DLMD) and the like are continuously mature, and large-scale industrial application is more and more extensive.
Laser power plays decisive action to mechanical properties, the surface quality of shaping part, and the laser power meter that has now on the market adopts direct measurement's mode to measure laser power, and naked probe easily receives the pollution of dust in the environment, simultaneously because the laser facula is little, when laser power is too high, power meter detection face is easily damaged to too high power density to lead to laser power meter to measure inaccurate and life is shorter.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a laser power measuring instrument which can finely adjust the height of a diverging mirror, so that the size of a light spot reaching a detection surface of a power meter can be adjusted, the problem that the detection surface of the original power meter is easily damaged by high-power laser is solved, a probe of the power meter can be protected from dust in the environment, the service life of the probe is prolonged, and the advantages of small size, adjustable size of the light spot, long service life of the power meter and the diverging mirror and the like of the measuring instrument are realized.
The embodiment of the utility model is realized by the following steps:
in a first aspect, the present invention provides a laser power measuring instrument, comprising:
a power meter having a measuring surface for being irradiated by a laser beam;
the mounting base is connected with the power meter and is provided with a first light through hole;
and the diverging mirror is arranged on the mounting seat, is positioned on a propagation path of the laser beam propagating in the first light through hole and is used for diffusing the laser beam before the laser beam reaches the measuring surface.
In an optional embodiment, the first light passing hole includes a first hole section and a second hole section which are communicated with each other, the cross-sectional area of the first hole section is larger than that of the second hole section, so as to form a step surface at the connection position of the first hole section and the second hole section, and the diverging mirror is arranged in the first hole section and abuts against the step surface; one end, far away from the first hole section, of the mounting seat is connected with the power meter.
In an optional embodiment, the laser power measuring instrument further includes a fixing seat, the fixing seat is connected to the mounting seat, the fixing seat is provided with a second light through hole, and the second light through hole is communicated with the first light through hole; the diverging mirror is clamped between the fixed seat and the mounting seat.
In an optional embodiment, an air passage is disposed on the fixing seat, and an end port of the air passage penetrates through a hole wall of the second light through hole to communicate with the second light through hole.
In an alternative embodiment, the cross-sectional area of the air passage gradually decreases in a direction from an end distant from the second light passing hole to an end close to the second light passing hole.
In an optional embodiment, the laser power measuring instrument further comprises a lifting mechanism and a dust cover, wherein the dust cover is connected with the power meter and the mounting seat at the same time and used for shielding a gap at the connection position of the mounting seat and the power meter; the lifting mechanism is arranged on the power meter and connected with the mounting seat and used for driving the mounting seat to lift relative to the power meter.
In an alternative embodiment, the lifting mechanism is provided as a micrometer head.
In an alternative embodiment, the dust cover is provided as a telescopic structure, and one end of the dust cover is hermetically connected with the mounting seat, and the other end of the dust cover is hermetically connected with the power meter.
In an alternative embodiment, the laser power measuring instrument further comprises a guide mechanism, the guide mechanism comprises a guide pillar and a guide sleeve which are matched in a sliding manner, one of the guide pillar and the guide sleeve is connected with the mounting seat, and the other of the guide pillar and the guide sleeve is connected with the power meter.
In an alternative embodiment, a window mirror is provided on the mount.
The embodiment of the utility model has the beneficial effects that:
in summary, the laser power measuring instrument provided by this embodiment aligns laser emitter and divergent mirror, and the laser beam that laser emitter sent shines on the measuring surface of power meter after passing through divergent mirror, because laser beam is diffused after the divergent mirror, the spot diameter that laser beam shines on the measuring surface increases, thereby makes laser beam's laser power density reduce, thereby play the guard action to the power meter, the power meter is difficult to be damaged by laser beam, the long service life of power meter, low in use cost, and the accuracy of measuring result is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a laser power measuring apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a view angle of a laser power measuring apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of another view of a laser power measuring apparatus according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a fixing base according to an embodiment of the utility model.
Icon:
001-laser beam; 100-a power meter; 110-measuring surface; 200-a mounting seat; 210-a first clear aperture; 220-air delivery hole; 300-a diverging mirror; 400-an air inlet joint; 500-sealing ring; 600-window mirror; 700-a fixed seat; 710-a second light aperture; 720-air passage; 800-a lifting mechanism; 900-a dust cover; 010-a guide mechanism; 011-guide pillars; 012-guide sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a laser power measuring instrument, compares current measuring instrument, has advantages such as the measuring result accuracy is high, long service life.
Referring to fig. 1, in the present embodiment, the laser power measuring apparatus includes a power meter 100, a mounting base 200 and a diverging mirror 300. The power meter 100 has a measuring surface 110 for being irradiated with the laser beam 001. The mount 200 is connected to the power meter 100, and the mount 200 has a first light passing hole 210 through which the laser beam 001 passes. The diverging mirror 300 is disposed on the mounting base 200, is located on a propagation path of the laser beam 001 propagating in the first light passing hole 210, and is configured to diffuse the laser beam 001 before the laser beam 001 reaches the measurement surface 110, so as to increase a spot diameter of the laser beam 001 irradiated on the measurement surface 110.
The use method of the laser power measuring instrument provided by the embodiment is as follows:
referring to fig. 2 or fig. 3, the light emitting end of the laser to be measured is aligned with the diverging mirror 300, and the laser beam 001 passes through the diverging mirror 300, propagates in the first light passing hole 210, and irradiates the measuring surface 110 of the power meter 100. After the laser beam 001 is diffused by the diverging mirror 300, the diameter of a light spot irradiated on the measuring surface 110 by the laser beam 001 is increased, the laser power density reaching the measuring surface 110 is reduced due to the increase of the diameter of the light spot, the power meter 100 is not easy to damage by the laser beam 001, the service life of the power meter 100 is long, and the use cost is low; meanwhile, the result obtained by measuring by using the power meter 100 has high accuracy.
In this embodiment, optionally, the cross-sectional profile of the first light passing hole 210 on the mounting seat 200 is circular, and the first light passing hole 210 includes a first hole section and a second hole section that are communicated and coaxially disposed, and it should be understood that the cross-sectional profiles of the first hole section and the second hole section are both circular. The cross-sectional area of the first hole section is larger than that of the second hole section, and an annular step surface is formed at the joint of the first hole section and the second hole section. In other words, the diameter of the first hole section is larger than that of the second hole section, the hole wall of the first hole section is connected with the hole wall of the second hole section through a circular ring surface, and the circular ring surface is a step surface.
Furthermore, six air delivery holes 220 are formed in the end face, away from the second hole section, of the first hole section, the six air delivery holes 220 are evenly distributed around the first hole section at intervals, the other end of each air delivery hole 220 is located on the outer peripheral surface of the mounting seat 200, and one end, located on the outer peripheral surface of the mounting seat 200, of each air delivery hole 220 is used for being communicated with cooling air. Cooling gas is introduced into the first bore section through gas transfer bore 220. It should be understood that the number of the air delivery holes 220 is not limited to six, and the number is set as required, and is not listed in this embodiment. In addition, an air inlet connector 400 may be disposed at each air delivery hole 220 to facilitate connection with air delivery equipment.
Further, two sealing rings 500 are arranged on the end face, away from the second hole section, of the first hole section, the two sealing rings 500 are coaxially arranged, and the port, located on the end face of the first hole section, of the gas transmission hole 220 is located between the two sealing rings 500.
In this embodiment, optionally, a window mirror 600 is disposed on the mounting base 200. The window mirror 600 is made of filter glass with a set wavelength, so that the position and the shape of a light spot can be observed in the using process of the power measuring instrument, and the adjustment is facilitated.
Referring to fig. 2 to 4, in the present embodiment, optionally, a fixing seat 700 is detachably connected to the mounting seat 200, a second light through hole 710 is disposed on the fixing seat 700, the second light through hole 710 is configured as a stepped hole, and a cross-sectional profile of the second light through hole 710 is circular. During the assembly, open fixing base 700 earlier, then will disperse mirror 300 and put into first hole section, be connected fixing base 700 with mount pad 200 again, make fixing base 700 and mount pad 200 centre gripping jointly and scatter mirror 300, the position of dispersing mirror 300 is reliable and stable. When measuring the laser power, the laser is aligned with the second light passing hole 710, and plays a role of positioning the laser through the second light passing hole 710.
Further, the fixing base 700 is further provided with six air passages 720, and the six air passages 720 are respectively in one-to-one correspondence with and communicated with the six air delivery holes 220, that is, one air passage 720 is in correspondence with and communicated with one air delivery hole 220. One end of each air passage 720 is located on the wall of the second ventilation hole 710, and the other end is located on the end face of the fixed seat 700 in the extending direction of the axis of the second ventilation, and the end face is an end face matched with the mounting seat 200. The position where the air duct 720 is communicated with the air delivery hole 220 is located between the two sealing rings 500, so that the cooling air is prevented from leaking at the communication position of the air delivery hole 220 and the air duct 720. Each air passage 720 is circular in cross section, and the diameter of each air passage 720 gradually increases in a direction from an end near the hole wall of the first hole section to an end far from the hole wall of the first hole section. It should be noted that, after the cooling gas is introduced into the gas transmission hole 220, the cooling gas enters the gas channel 720 from the gas transmission hole 220, and is finally discharged from the second light through hole 710, and the cooling gas can cool the diverging mirror 300 and can clean impurities attached to the surface of the diverging mirror 300.
In this embodiment, optionally, the laser power measuring apparatus further includes a lifting mechanism 800, a dust cover 900, and a guiding mechanism 010. The lifting mechanism 800 is connected with the power meter 100 and the mounting base 200 at the same time, and is used for driving the mounting base 200 to lift relative to the power meter 100, so that the height of the diverging mirror 300 relative to the measuring surface 110 is adjusted, and the application range is expanded. Dust cover 900 is provided as a telescopic structure, and dust cover 900 is connected to power meter 100 and mount 200 at the same time, and is in sealing fit with power meter 100 and mount 200, and is used for shielding the gap at the joint of mount 200 and power meter 100, thereby preventing impurities such as dust from entering mount 200. The dust cover 900 is arranged to be of a telescopic structure, can be synchronously stretched along with the lifting of the mounting base 200, and is safe and reliable to use. The guide mechanism 010 includes a guide post 011 and a guide sleeve 012 which are slidably engaged, one of the guide post 011 and the guide sleeve 012 is connected to the mount 200, and the other is connected to the power meter 100. For example, in the present embodiment, the guide post 011 and the wattmeter 100 are fixedly connected, and the guide sleeve 012 and the mounting base 200 are fixedly connected. In addition, the number of the guide mechanism 010 is set as needed, and may be one or more, and is not particularly limited in this embodiment.
It should be noted that the lifting mechanism 800 may be, but is not limited to, a micrometer head.
The dust cover 900 may be a cloth cover or the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A laser power measurement instrument, comprising:
a power meter having a measuring surface for being irradiated by a laser beam;
the mounting base is connected with the power meter and is provided with a first light through hole;
and the diverging mirror is arranged on the mounting seat, is positioned on a propagation path of the laser beam propagating in the first light through hole and is used for diffusing the laser beam before the laser beam reaches the measuring surface.
2. The laser power measuring instrument according to claim 1, wherein:
the first light through hole comprises a first hole section and a second hole section which are communicated, the cross section area of the first hole section is larger than that of the second hole section so as to form a step surface at the joint of the first hole section and the second hole section, and the diverging mirror is arranged in the first hole section and is abutted against the step surface; one end, far away from the first hole section, of the mounting seat is connected with the power meter.
3. The laser power measuring instrument according to claim 1, wherein:
the laser power measuring instrument further comprises a fixed seat, the fixed seat is connected with the mounting seat, the fixed seat is provided with a second light through hole, and the second light through hole is communicated with the first light through hole; the diverging mirror is clamped between the fixed seat and the mounting seat.
4. The laser power measuring instrument according to claim 3, wherein:
an air passage is arranged on the fixed seat, and one port of the air passage penetrates through the hole wall of the second light through hole to be communicated with the second light through hole.
5. The laser power measuring instrument according to claim 4, wherein:
the cross-sectional area of the air passage gradually decreases in a direction from one end away from the second light passing hole to one end close to the second light passing hole.
6. The laser power measuring instrument according to claim 1, wherein:
the laser power measuring instrument further comprises a lifting mechanism and a dust cover, wherein the dust cover is connected with the power meter and the mounting seat at the same time and used for shielding a gap at the joint of the mounting seat and the power meter; the lifting mechanism is arranged on the power meter and connected with the mounting seat and used for driving the mounting seat to lift relative to the power meter.
7. The laser power measuring instrument according to claim 6, wherein:
the lifting mechanism is set as a spiral micrometer head.
8. The laser power measuring instrument according to claim 6, wherein:
the dustproof cover is of a telescopic structure, one end of the dustproof cover is connected with the mounting seat in a sealing mode, and the other end of the dustproof cover is connected with the power meter in a sealing mode.
9. Laser power measuring instrument according to any of claims 6 to 8, characterized in that:
the laser power measuring instrument further comprises a guide mechanism, the guide mechanism comprises a guide pillar and a guide sleeve which are matched in a sliding mode, one of the guide pillar and the guide sleeve is connected with the mounting seat, and the other of the guide pillar and the guide sleeve is connected with the power meter.
10. The laser power measuring instrument according to claim 1, wherein:
and a window mirror is arranged on the mounting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122906493.3U CN216246804U (en) | 2021-11-24 | 2021-11-24 | Laser power measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122906493.3U CN216246804U (en) | 2021-11-24 | 2021-11-24 | Laser power measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216246804U true CN216246804U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122906493.3U Active CN216246804U (en) | 2021-11-24 | 2021-11-24 | Laser power measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216246804U (en) |
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2021
- 2021-11-24 CN CN202122906493.3U patent/CN216246804U/en active Active
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