CN214372911U - Laser power detection device - Google Patents
Laser power detection device Download PDFInfo
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- CN214372911U CN214372911U CN202122097091.3U CN202122097091U CN214372911U CN 214372911 U CN214372911 U CN 214372911U CN 202122097091 U CN202122097091 U CN 202122097091U CN 214372911 U CN214372911 U CN 214372911U
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Abstract
The utility model discloses a laser instrument power detection device for laser direct imaging field, include: the laser power detector is arranged on a workbench right below the laser, the laser power detector is arranged on the side edge of the light path reflection unit, the light path reflection unit is a hollow light guide pipe, a through hole is formed in the upper side wall of the light path reflection unit, emergent light of the laser penetrates through the through hole, a plurality of times of total reflection occurs on the inner side wall of the hollow light guide pipe, then the emergent light enters the laser power detector through the other side, and the laser power detector detects the emergent light power of the laser. This laser instrument power detection device can change the light-emitting direction of laser instrument, has avoided the narrow space between laser instrument and the workstation, through placing laser power detector in the region that the workstation upper end does not have the sheltering from, makes things convenient for the measurement personnel to detect laser power.
Description
Technical Field
The utility model discloses be applied to the direct formation of image field of laser, especially involve a laser instrument power detection device.
Background
On the laser direct imaging equipment, be provided with a plurality of laser instrument, the emergent light PCB board of every laser instrument exposes sensitization printing ink. The light-emitting power of the laser is one of the important parameters of the laser, and the photosensitive ink layer can be effectively exposed only if the light-emitting power of the laser meets the design requirement. Therefore, before the laser direct imaging device is put into use, several lasers need to be checked one by one to ensure that the output power of all the lasers meets the use requirement. After a laser direct imaging device is used for a period of time, the laser devices of the device are also required to be checked one by one again to determine the power loss condition of each laser device.
When the power of the laser is detected, the laser emitted by the laser needs to be guided into the laser power detector, and theoretically, the laser emits light to the right below, so that the laser power detector is only required to be placed right below the laser to receive the light emitted by the laser. However, since the space of the laser direct imaging device is limited, that is, the space between the laser and the worktable located right below the laser is limited, the laser power detector is inconvenient to place in the space, and if the laser power detector is placed on the worktable, the output power of the laser is inconvenient to detect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a laser instrument power detection device, the light-emitting power of laser instrument detects inconvenient problem in its aim at solution laser direct imaging equipment.
The scheme of the utility model is as follows:
a laser power detection device is used in the field of laser direct imaging and comprises: the laser power detector comprises a light path reflection unit and a laser power detector, wherein the light path reflection unit is arranged on a workbench right below a laser, the laser power detector is arranged on the side edge of the light path reflection unit, the light path reflection unit is a hollow light guide pipe, a through hole is formed in the hollow light guide pipe, emergent light of the laser passes through the through hole, a plurality of times of total reflection occurs in the hollow light guide pipe, then the emergent light is emitted from the side edge of the hollow light guide pipe and then enters the laser power detector, and the laser power detector detects the light emitting power of the laser.
Furthermore, the hollow light guide pipe is obliquely arranged on the workbench, and the sum of a first included angle formed by emergent light emitted by the laser and the axis of the hollow light guide pipe and a second included angle formed by the axis of the hollow light guide pipe and the horizontal plane is equal to 90;
emergent light of the laser enters a first inner side wall opposite to the through hole of the hollow light guide pipe through the through hole, is totally reflected to a second inner side wall located on the same side with the through hole of the hollow light guide pipe through the first inner side wall, is totally reflected for multiple times between the first inner side wall and the second inner side wall, and finally enters the laser power detector after being emitted from the side edge of the hollow light guide pipe.
Furthermore, the hollow tube is horizontally arranged on the workbench, and a plane mirror is obliquely arranged in the hollow light guide tube and is positioned right below the through hole;
the emergent light of the laser vertically passes through the through hole downwards, then is totally reflected to a second inner side wall which is positioned at the same side with the through hole of the hollow light guide pipe through the plane mirror, is totally emitted from the second inner side wall and then is incident to a first inner side wall which is opposite to the through hole of the hollow light guide pipe, then is totally reflected for many times between the first inner side wall and the second inner side wall, and finally is incident to the laser power detector after being emitted from the side edge of the hollow light guide pipe.
Furthermore, a third included angle formed by the emergent light of the laser and the plane mirror and a fourth included angle formed by the plane mirror and the horizontal axis of the hollow light guide pipe are equal to 90 degrees.
Further, the center of the plane mirror is arranged on the horizontal axis.
Further, it is characterized in that the optical path reflecting unit is an optical fiber.
The beneficial technical effects are as follows: the hollow light guide pipe capable of enabling the emergent light of the laser direct imaging equipment to be totally reflected through the inner surface is used, the laser of the original vertical downward emergent light changes the light path propagation direction, the emergent light of the laser is made to be emitted from the side edge of a narrow area between the laser and a workbench and is incident to a laser power detector, and the laser power detector is placed in the area which is not shielded at the upper end of the workbench, so that the narrow area between the laser and the workbench is avoided, and the operating personnel can conveniently detect the emergent light power of a laser light source.
Drawings
Fig. 1 shows an embodiment of the present invention.
Fig. 2 shows another embodiment of the present invention.
The names and serial numbers corresponding to the components in the figure are respectively: the laser comprises a flat plate 10, a laser 201, a laser 202, a laser power detector 30, a workbench 40, a hollow light guide pipe 50, a through hole 501 and a plane mirror 60.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
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, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used merely to describe differences and are not intended to indicate or imply relative importance, and moreover, unless explicitly stated or limited otherwise, the terms "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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses a laser instrument power detection device for laser direct imaging field, include: the laser power detector is arranged on the side edge of the workbench, which is positioned on the light path reflecting unit. The light path reflection unit is a hollow light pipe. The hollow light pipe meets the following use conditions: when the incident light is incident to the inner side wall of the hollow light pipe at a certain angle, the inner side wall of the hollow light pipe can be totally reflected for a plurality of times. A through hole is formed in the side wall of the hollow light guide pipe, after each laser is adjusted in position, emitted light just penetrates through the through hole downwards, a plurality of times of total reflection occurs between the inner side wall of the hollow light guide pipe, then the emitted light is emitted from the side edge of the hollow light guide pipe, and finally the emitted light is incident to a laser power detector placed on the side edge of the hollow light guide pipe. Meanwhile, after each laser is used for a period of time, the loss condition of the current power of each laser relative to the first use can be detected. Because the laser that the laser instrument was just below emergent totally reflects through the inner wall of hollow light pipe for a plurality of times, has changed the propagation direction of laser, finally from the side outgoing of hollow light pipe to laser power detector to avoid the crowded space between laser instrument and the workstation that is in under the laser instrument, made things convenient for the measurement personnel to detect the laser instrument one by one.
Example 1
Referring to fig. 1, fig. 1 shows some components of a laser direct imaging apparatus: dull and stereotyped 10 installs a plurality of lasers of violently indulging the range on dull and stereotyped 10, and a plurality of lasers include: laser 201, laser 202. The plate 10 is controlled by a motion control system (not shown) to move along the X-direction and/or the Y-direction, so as to drive the plurality of lasers to move along the X-direction and/or the Y-direction. The motion control system includes a motor (not shown) that controls the movement of the tablet 10 in the X direction, and a motor (not shown) that controls the movement of the tablet 10 in the Y direction. In the several lasers shown in fig. 1, the output power of each laser needs to be detected by the laser power detector 30 to ensure that the output power of each laser meets the design requirements. Since the height and space of the space between the plurality of lasers and the worktable 40 are limited, it is inconvenient to place the laser power detector 30 on the worktable 40 directly below the plurality of lasers, that is, the height of the area between the flat plate 10 and the worktable 40 is limited, and it is inconvenient to operate if the laser power detector 30 is placed in the area to detect the output power of the laser emitted downward by the lasers. It will be appreciated that the laser power detector 30 is relatively bulky and the spatial area between the plate 10 and the stage 40 is relatively small. Therefore, it is necessary to extract the light emitted downward from the laser from the side of the flat plate 10 by changing the propagation direction of the optical path so as to avoid the narrow region between the flat plate 10 and the table 40. Based on this idea, in the embodiment, a hollow light guide 50 is obliquely disposed in the region between the plate 10 and the worktable 40, and a first included angle formed by the light emitted from the laser 201 and the axis X0 of the hollow light guide 50 along the length direction is a 1. A through hole 501 is formed in the sidewall of the hollow light pipe 50. One of the lasers 201 is arranged to emit light right vertically downward through the through-hole 501 by controlling the movement of the flat panel 10 in the X direction and/or the Y direction. After the outgoing light of the laser 201 passes through the through hole 501 downwards, total reflection occurs at a point B1 of a first inner side wall of the hollow light pipe 50, which is opposite to the through hole 501, reflected light enters a point C1 of a second inner side wall of the hollow light pipe 50, which is located at the same side as the through hole 501, and total reflection occurs at a point C1, reflected light enters a point B2 of the first inner side wall and is totally reflected at a point B2, and reflected light enters a point C2 and is totally reflected to a last reflection point BN of the first inner side wall from a last reflection point CN of the second inner side wall, and is reflected to the laser power detector 30 via the BN point. The laser power detector 30 receives the reflected light having undergone the multiple total reflections, and detects the output power of the laser 201. Through using hollow light pipe 50, the emergent light that will originally go out perpendicularly downwards changes the light path direction of propagation, makes the emergent light follow the narrow regional side between laser instrument and the workstation 40 and jets out, incides to laser power detector 30, because laser power detector 30 places the nothing of sheltering from the position in workstation 10 upper end to narrow region between dull and stereotyped 10 and the workstation 40 has been avoided, makes things convenient for the detection personnel to detect the luminous power of laser instrument 201.
When the detection of the output power of the laser 201 is completed, the output power of the other laser 202 is detected in the same way by controlling the movement of the panel 10 in the X direction. And then the flat plate 10 is controlled to move along the X direction and/or the Y direction, and the light output power of the rest lasers is detected.
Referring to fig. 1, in order to cause total reflection of the outgoing light from the laser 201 at the point B1, the following conditions need to be satisfied: the first included angle a1 formed by the emergent light of the laser 201 and the axis line XO of the hollow light pipe 50 and the second included angle a2 formed by the axis line XO of the hollow light pipe 50 and the horizontal plane are equal to 90 degrees.
Example 2
Referring to fig. 2, unlike embodiment 1, in this embodiment, a hollow light pipe 50 is horizontally placed on a table 40 and is located right below a plurality of lasers. After the laser 201 is adjusted, the via 501 is directly below the laser 201. Inside the hollow light pipe 50, a plane mirror 60 is placed. The position of the flat mirror 60 also needs to satisfy: the light emitted from the laser 201 passes through the through hole 501, is totally reflected by the plane mirror 60, and then enters the point D1 on the second inner side wall of the hollow light guide 50 to be totally reflected continuously. The third angle a3 formed by the light emitted by the laser 201 and the plane mirror 60 plus the fourth angle a4 formed by the plane mirror 60 and the axis XO of the hollow light pipe 50 is equal to 90 °. The light emitted from the laser 201 is totally reflected on the plane mirror 60 for the first time, the reflected light is incident on the point D1 on the second inner side wall of the hollow light pipe 50, and totally reflected for the second time at the point D1, the reflected light is totally reflected for the third time at the point F1 on the first inner side wall of the hollow light pipe 50, the reflected light is incident on the point D2 on the second inner side wall of the hollow light pipe 50, and totally reflected for the fourth time at the point D2, the reflected light is incident on the point F2 on the first inner side wall of the hollow light pipe 50, and totally reflected for the fifth time at the point F2, the reflected light is incident on the point D3 on the second inner side wall of the hollow light pipe 50, and totally reflected for the sixth time at the point D3, and the reflected light is incident on the laser power detector 30. The laser power detector 30 detects the laser power emitted by the laser 201.
It should be noted that, in the present embodiment, the total reflection of the light emitted from the laser 201 six times in the hollow light guide 50 is only exemplary, and the number of times of the total reflection actually occurs is determined by combining the length and the inner diameter of the hollow light guide 50.
Similarly, when the detection of the output power of the laser 201 is completed, the output power of the other laser 202 is detected by the same method by controlling the movement of the panel 10 in the X direction. And then the flat plate 10 is controlled to move along the X direction and/or the Y direction, and the light output power of the rest lasers is detected.
In this embodiment, the hollow light pipe 50 is used to change the light path propagation direction of the laser light source which is emitted vertically downward originally, so that the laser light source is emitted from the side of the region between the flat plate 10 and the worktable 40 and enters the laser power detector 30, thereby avoiding the narrow region between the flat plate 10 and the worktable 40.
The utility model discloses in, light path reflection unit is preferred optic fibre because as long as the incident angle of laser instrument is selected suitably, optic fibre can satisfy the incident light and take place many times the total reflection in optic fibre.
The laser power detector 30 mentioned in the present invention may be an instrument device having laser power detection in the prior art, and is not limited herein.
In addition, the first inner side wall of the hollow light pipe 50 mentioned in the present invention is the inner side wall of the lower end of the hollow light pipe 50; the second inner sidewall is an inner sidewall of the upper end of the hollow light pipe 50. Since the hollow light pipe 50 is in the shape of an integral circular pipe, the first inner sidewall and the second inner sidewall are only described for easy distinction.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. A laser power detection device is used in the laser direct imaging field, and is characterized by comprising: the laser power detector is arranged on the side edge of the light path reflection unit, the light path reflection unit is a hollow light guide pipe, and a through hole is formed in the pipe wall of the hollow light guide pipe;
the emergent light of the laser downwards penetrates through the through hole, a plurality of times of total reflection occurs in the hollow light guide pipe, and finally the emergent light is emitted from the side edge of the hollow light guide pipe and then is incident to the laser power detector, and the laser power detector detects the emergent light power of the emergent light of the laser.
2. The laser power detection device of claim 1, wherein the hollow light pipe is obliquely placed on the worktable, and a sum of a first included angle formed by the outgoing light of the laser and the axis of the hollow light pipe and a second included angle formed by the axis of the hollow light pipe and a horizontal plane is equal to 90 °;
emergent light of the laser enters a first inner side wall opposite to the through hole of the hollow light guide pipe through the through hole, is totally reflected to a second inner side wall which is positioned at the same side with the through hole of the hollow light guide pipe through the first inner side wall, then is totally reflected for multiple times between the first inner side wall and the second inner side wall, and finally enters the laser power detector after being emitted from the side edge of the hollow light guide pipe.
3. The laser power detection device according to claim 1, wherein the hollow light guide is horizontally disposed on the worktable, and a plane mirror is obliquely disposed inside the hollow light guide right below the through hole;
the emergent light of the laser vertically passes through the through hole downwards, then is totally reflected to a second inner side wall which is positioned at the same side with the through hole of the hollow light guide pipe through the plane mirror, is totally emitted from the second inner side wall, then is incident to a first inner side wall which is opposite to the through hole of the hollow light guide pipe, then is totally reflected for multiple times between the first inner side wall and the second inner side wall, and finally is incident to the laser power detector after being emitted from the side edge of the hollow light guide pipe.
4. The laser power detection device of claim 3, wherein a third angle formed by the outgoing light from the laser and the plane mirror plus a fourth angle formed by the plane mirror and the horizontal axis of the hollow light pipe is equal to 90 °.
5. The laser power detection device of claim 4, wherein the center of the flat mirror is disposed on the horizontal axis.
6. The laser power detection device as claimed in any one of claims 1 to 5, wherein the optical path reflection unit is an optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122097091.3U CN214372911U (en) | 2021-09-01 | 2021-09-01 | Laser power detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122097091.3U CN214372911U (en) | 2021-09-01 | 2021-09-01 | Laser power detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214372911U true CN214372911U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122097091.3U Active CN214372911U (en) | 2021-09-01 | 2021-09-01 | Laser power detection device |
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| Country | Link |
|---|---|
| CN (1) | CN214372911U (en) |
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2021
- 2021-09-01 CN CN202122097091.3U patent/CN214372911U/en active Active
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