CN215767595U - Light beam quality testing device - Google Patents
Light beam quality testing device Download PDFInfo
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- CN215767595U CN215767595U CN202121267063.5U CN202121267063U CN215767595U CN 215767595 U CN215767595 U CN 215767595U CN 202121267063 U CN202121267063 U CN 202121267063U CN 215767595 U CN215767595 U CN 215767595U
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Abstract
The application discloses light beam quality testing arrangement for test laser beam quality, wherein testing arrangement includes the pedestal. The surface of the pedestal is sequentially provided with a laser collimation output unit, a laser attenuation unit, a laser focusing unit and a laser quality detection unit along a laser irradiation path. The laser collimation output unit comprises a laser output head and a collimation adapter. The laser attenuation unit at least comprises an attenuation lens. The laser focusing unit at least comprises a focusing lens. The laser quality detection unit is used for receiving the laser focused by the focusing lens. The testing device can effectively attenuate the energy of the light beam, improve the quality of light beam testing and effectively prolong the service life of the light beam quality testing device.
Description
Technical Field
The utility model relates to the technical field of test equipment, in particular to a light beam quality test device.
Background
During the use of various optoelectronic devices, such as laser, the quality of the light beam of the optoelectronic device needs to be tested and analyzed. Because the light beam emitted by the used laser has larger energy, and the detection device for testing the laser beam does not have larger energy storage space, the detection device cannot bear larger power density generally, and a small proportion of light beam is separated for detection and analysis under the condition of not influencing the main light path of the laser. Therefore, the energy density of the split laser beam must be controlled within a range acceptable to the detector.
Most businesses today separate the laser beam by a beam splitter. However, the beam splitter has limited beam splitting capability and low beam splitting accuracy. Therefore, an absorption attenuator is generally added to the beam splitter, and the power of the laser beam is attenuated by the absorption attenuator.
However, the absorption attenuator has a number of problems, including firstly, the energy absorbed by the absorption attenuator is converted into heat, which easily causes the temperature of the material to rise, and affects the optical characteristics of the material, and thus the quality of the laser beam passing through the absorption attenuator; secondly, the laser beam still has large energy after being attenuated by the absorption attenuator, so that the detection device is easy to damage, the detection precision of the detection device is reduced, and even the detection device cannot be normally used.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a light beam quality testing device, which collects divergent laser through a laser collimation output unit to form collimated light, the collimated light is attenuated by at least one laser attenuation unit and enters a laser quality testing unit for light beam quality testing after being focused by a laser focusing unit, the energy of the laser can be effectively attenuated, the quality of laser beam testing is improved, and the service life of the light beam quality testing device is effectively prolonged.
Another object of the present invention is to provide a light beam quality testing apparatus, which can conveniently adjust the position and the placement angle of each component disposed on the surface of the pedestal by uniformly disposing the mounting holes on the surface of the pedestal, and includes reasonably disposing the attenuating lens along the irradiation path of the collimated light, so as to test various light beams with different energies.
Another objective of the present invention is to provide a light beam quality testing apparatus, which can effectively attenuate the energy of a light beam by the cooperation of a plurality of attenuating lenses, so that the light beam is controlled within the testing range of a light beam quality measuring instrument, and thus the light beam quality testing apparatus is suitable for testing light beams with different energies, and has a wider application range.
Another object of the present invention is to provide a light beam quality testing apparatus, which can effectively process the transmitted light transmitted by the attenuating mirror by providing a heat absorbing unit, so that the light beam quality testing apparatus can be used more safely.
Another objective of the present invention is to provide a light beam quality testing apparatus, which can reasonably disperse the transmitted light by arranging a divergent lens, so as to prevent the transmitted light from damaging the heat absorption unit due to heat concentration caused by too small light spot.
Another object of the present invention is to provide a light beam quality testing apparatus, which can reasonably block the refracted light of the attenuating lens by disposing a light barrier, so that the light beam quality testing apparatus is safer to use.
In order to achieve at least one of the above objects, the present invention provides a beam quality testing apparatus for testing the quality of a laser beam, wherein the testing apparatus comprises a stage, wherein the stage is sequentially provided with:
the laser collimation output unit comprises a laser output head and a collimation adapter;
a laser attenuation unit comprising at least an attenuating lens;
a laser focusing unit including at least a focusing lens; and
and the laser quality detection unit is used for receiving the laser focused by the focusing lens.
In one possible embodiment, the number of the laser attenuation units is at least two, and the two laser attenuation units are located on mutually reflected laser paths.
In one possible embodiment, the laser attenuation unit further comprises an attenuation lens adjusting bracket, on which the attenuation lens is mounted.
In a possible embodiment, a light barrier is also arranged on the table base, which is close to the attenuating mirror to block the reflected residual light and the transmitted residual light.
In a possible embodiment, the pedestal is further provided with a heat absorption unit, and the heat absorption unit is arranged in the transmission direction of the attenuating lens.
In a possible embodiment, the heat absorbing unit comprises a heat absorbing cavity and a diverging lens, the heat absorbing cavity is provided with a water cooling inlet and a water cooling outlet, and the diverging lens is arranged at the opening of the heat absorbing cavity and faces the transmission direction of the attenuating lens.
In one possible embodiment, the heat absorption unit is set in the transmission direction of the attenuating mirror where the laser attenuation is first performed; or the number of the heat absorption units is two, and the heat absorption units are correspondingly arranged in the transmission directions of the two attenuating lenses.
In a possible embodiment, the laser focusing unit further includes a focusing lens adjusting bracket, and the focusing lens is disposed on the focusing lens adjusting bracket.
In a possible embodiment, the laser quality detection unit includes a beam quality meter base and a beam quality meter, the beam quality meter base is disposed on the pedestal, and the beam quality meter is disposed on the beam quality meter base and has a height corresponding to the stress optical path.
In a possible embodiment, the collimation adapter has a laser collimation mirror inside.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description.
Drawings
Fig. 1 is a schematic top view of a beam quality testing apparatus according to a preferred embodiment of the present application.
Fig. 2 is a schematic structural diagram of a beam quality testing apparatus according to a preferred embodiment of the present application.
Fig. 3 is a schematic rear view of a light beam quality testing apparatus according to a preferred embodiment of the present application.
Detailed Description
The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be understood by those skilled in the art that in the disclosure of the specification, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, which are merely for convenience in describing the utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus the terms are not to be construed as limiting the utility model.
A beam quality testing apparatus according to a preferred embodiment of the present invention will be described in detail below with reference to fig. 1 to 3 of the specification, wherein the beam quality testing apparatus is used for testing the quality of a laser beam. The light beam quality testing device comprises a pedestal 10, wherein a laser collimation output unit 20, a laser attenuation unit 30, a laser focusing unit 40 and a laser quality detection unit 50 are sequentially arranged on the pedestal 10 along a laser path.
The laser collimation output unit 20 comprises a laser output head 21 and a collimation adapter 22, so that the laser output head 21 is fixed through the collimation adapter 22, and divergent light emitted by the laser output head 21 is converted into collimated light 100 by using a laser collimation mirror inside the laser collimation output unit, so that the test and the use are convenient. The laser attenuation unit 30 at least includes an attenuation lens 31 to attenuate the energy of the collimated light 100 to be within an acceptable range of the laser quality detection unit 50. The laser focusing unit 40 at least includes a focusing lens 41 to convert the collimated light 100 into beam waist-shaped light for the laser quality detection unit 50 to receive. The laser quality detection unit 50 is used for receiving the laser focused by the focusing lens 41 and testing the laser.
As a preferred embodiment of the present invention, the number of the laser attenuation units 30 is at least two, and the two laser attenuation units 30 are located on the laser paths reflected by each other.
Further preferably, the laser attenuation unit 30 further comprises an attenuation lens adjusting bracket 32, wherein the attenuation lens 31 is mounted on the attenuation lens adjusting bracket 32. The height, position, etc. of the attenuating lens 31 are flexibly adjusted by the attenuating lens adjusting bracket 32.
It is further preferable that at least two attenuation lenses 31 are adjustably provided to the stage 10 along the irradiation path of the collimated light 100, so that the overall structure including the components is made more compact according to the principle of reflection, and the space of the stage 10 can be reasonably utilized.
As a preferred embodiment of the present invention, the mounting holes 11 are uniformly distributed on the surface of the pedestal 10, and the laser collimation output unit 20, the laser attenuation unit 30, the laser focusing unit 40, and the laser quality detection unit 50 are all adjustably mounted on the mounting holes 11 of the pedestal 10, so that the components (including the laser collimation output unit 20, the laser attenuation unit 30, the laser focusing unit 40, and the laser quality detection unit 50) mounted on the pedestal 10 can be reasonably distributed, and the mounting positions and mounting angles thereof can be flexibly adjusted, so that the shape of the pedestal 10, such as a circle, a rectangle, or other irregular shapes, can be set according to actual needs. For example, when testing light beams with different energies, the number of the attenuating lenses 31 may need to be adjusted, and once the number of the attenuating lenses 31 is adjusted, the installation position and the installation angle thereof may need to be adjusted due to the existence of transmitted light, refracted light and reflected light of the attenuating lenses 31; in addition, for example, in a case where the test space is limited, the shape of the platform 10 may need to be set corresponding to the test space, and the distribution of the components on the platform 10 may need to be adjusted correspondingly, so that the components are distributed in a circular or rectangular shape.
It should be understood that, depending on the shape of the stage 10, the distribution positions and the mounting angles of the components on the stage 10 may be adjusted adaptively as long as the path of the beam processing of the collimator adapter 22 → the attenuating lens → the focusing lens → the beam quality instrument is ensured.
In a possible embodiment, a light barrier 60 is also provided on the stand 10. The light barrier 60 is close to the attenuating mirror 31 to block the reflected residual light and the transmitted residual light, so that the light beam quality testing device is safer to use.
In addition, it is considered that the divergent light beam is condensed to form the collimated light 100, and the energy contained therein is very large and has a relatively high heat, which is likely to adversely affect the surroundings. Therefore, as a preferred embodiment of the present invention, the pedestal 10 is further provided with a heat absorbing unit 70, wherein the heat absorbing unit 70 is disposed at the left end of the first attenuating lens 31 disposed along the laser irradiation path to absorb heat of the transmitted light transmitted by the attenuating lens 31 through the collimated light 100.
More preferably, the heat absorbing unit 70 may also be provided in two, and the other is located at the right end of the second attenuating lens 31 arranged along the laser irradiation path, so as to further absorb the heat of the transmitted light projected by the attenuating lens 31, and prevent the energy of the collimated light 100 reflected by the first attenuating lens 31 from being still relatively high and affecting the subsequent laser test.
It will be appreciated by those skilled in the art that the present invention is merely illustrative of attenuating the energy of a laser beam to facilitate testing, and it will be apparent that the utility model may be applied to testing of other beams. In addition, the attenuating lenses 31 can also be set to be three, four or more, and are sequentially located on the laser paths reflected by each other, so as to attenuate the laser energy to a greater extent, and meet the requirement of the test.
As a preferred embodiment of the present invention, the heat absorbing unit 70 includes a heat absorbing cavity 71 and a diverging lens 72. The heat absorbing chamber 71 is provided with a water cooling inlet 711 and a water cooling outlet 712. The diverging lens 72 is disposed at the opening of the heat absorption cavity 71 and faces the transmission direction of the attenuating lens 31. The high-energy collimated light 100 is scattered and emitted into the cooling cavity 71 through the diverging lens 72, so that the heat absorption unit 70 is prevented from being damaged easily due to too concentrated heat, and then the heat of the diffused laser is taken away by the cooling water continuously circulating and flowing in the heat absorption cavity 71.
Typically, the cooling medium is embodied as cooling water. It will be apparent to those skilled in the art that the cooling medium may also be embodied as other refrigerants or refrigerant gases.
Preferably, the laser focusing unit 40 further includes a focusing lens adjusting bracket 42, wherein the focusing lens 41 is disposed on the focusing lens adjusting bracket 42, so that the height and the installation position of the focusing lens 41 can be flexibly adjusted by the focusing lens adjusting bracket 42.
As a preferred embodiment of the present invention, the laser quality detecting unit 50 includes a beam quality instrument base 51 and a beam quality instrument 52, wherein the beam quality instrument base 51 is disposed on the pedestal 10, and the beam quality instrument 52 is disposed on the beam quality instrument base 51, and the height of the beam quality instrument base 51 is corresponding to the stress light path, so that the height and the installation position of the beam quality instrument 52 can be flexibly adjusted by the beam quality instrument base 51.
It will be appreciated by persons skilled in the art that the embodiments of the utility model shown in the foregoing description are by way of example only and are not limiting of the utility model. The objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (10)
1. The utility model provides a light beam quality testing arrangement for test laser beam quality, its characterized in that, testing arrangement includes a pedestal, wherein have set gradually along the laser route on the pedestal:
the laser collimation output unit comprises a laser output head and a collimation adapter;
a laser attenuation unit comprising at least an attenuating lens;
a laser focusing unit including at least a focusing lens; and
and the laser quality detection unit is used for receiving the laser focused by the focusing lens.
2. The beam quality testing apparatus of claim 1, wherein the number of the laser attenuation units is at least two, and the two laser attenuation units are located on mutually reflected laser paths.
3. The beam quality testing apparatus of claim 1, wherein the laser attenuation unit further comprises an attenuation lens adjustment bracket, the attenuation lens being mounted on the attenuation lens adjustment bracket.
4. The beam quality testing apparatus of claim 1, wherein the stage further comprises a light barrier disposed thereon, the light barrier being adjacent to the attenuating mirror to block the reflected residual light and the transmitted residual light.
5. The beam quality testing apparatus according to claim 1 or 2, wherein the stage is further provided with a heat absorbing unit, and the heat absorbing unit is provided in a transmission direction of the attenuating mirror.
6. The light beam quality testing apparatus of claim 5, wherein the heat absorption unit comprises a heat absorption cavity and a divergent lens, the heat absorption cavity is provided with a water cooling inlet and a water cooling outlet, and the divergent lens is disposed at an opening of the heat absorption cavity and faces a transmission direction of the attenuating lens.
7. The beam quality testing apparatus of claim 6, wherein the heat absorbing unit is disposed in a transmission direction of the attenuating mirror that first performs laser attenuation; or the number of the heat absorption units is two, and the heat absorption units are correspondingly arranged in the transmission directions of the two attenuating lenses.
8. The beam quality testing apparatus of claim 1, wherein the laser focusing unit further comprises a focusing lens adjusting bracket, and the focusing lens is disposed on the focusing lens adjusting bracket.
9. The beam quality testing apparatus of claim 1, wherein the laser quality detection unit comprises a beam quality meter base and a beam quality meter, the beam quality meter base is disposed on the pedestal, and the beam quality meter is disposed on the beam quality meter base and has a height corresponding to the stress optical path.
10. The beam quality testing apparatus of claim 1, wherein the collimating adapter has a laser collimating mirror therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121267063.5U CN215767595U (en) | 2021-06-08 | 2021-06-08 | Light beam quality testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121267063.5U CN215767595U (en) | 2021-06-08 | 2021-06-08 | Light beam quality testing device |
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| CN215767595U true CN215767595U (en) | 2022-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879356A (en) * | 2022-04-13 | 2022-08-09 | 同济大学 | Laser continuously adjustable attenuation method and device based on optical film performance |
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2021
- 2021-06-08 CN CN202121267063.5U patent/CN215767595U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114879356A (en) * | 2022-04-13 | 2022-08-09 | 同济大学 | Laser continuously adjustable attenuation method and device based on optical film performance |
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