CN209460452U - Laser aligner and laser system - Google Patents
Laser aligner and laser system Download PDFInfo
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- CN209460452U CN209460452U CN201920240368.3U CN201920240368U CN209460452U CN 209460452 U CN209460452 U CN 209460452U CN 201920240368 U CN201920240368 U CN 201920240368U CN 209460452 U CN209460452 U CN 209460452U
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Abstract
The utility model relates to laser output equipment technical field, providing a kind of laser aligner and laser system, the laser aligner includes optical fiber, the first lens and the second lens；The axis direction of the optical fiber, first lens with second lens along the optical fiber is successively arranged；First lens have through-hole, and the through-hole runs through first lens along the axis direction of the optical fiber；First lens include the first concave surface, and first concave surface is towards second lens or towards the optical fiber.The laser aligner and laser system of the utility model can be effectively reduced adverse effect of the return light to laser system, improve system run all right and safety.
Description
Technical field
The utility model relates to laser output equipment technical field more particularly to a kind of laser aligner and laser systems.
Background technique
Optical fiber laser is to use doped rare earth element glass optical fiber as the laser of gain media.Since its is at low cost, small
It is type, intensive with the obvious advantage, and its electrical efficiency and power with higher, therefore its application field is extensive.Also, with
The development of high-capacity optical fiber laser application range, optical fiber laser are widely used in component mark, cutting, drilling, welding, clear
Wash with medical operating etc..Relatively common is for laser marking, laser cleaning in the market, and the different of rapidoprint are being swashed
In the process of light application, the strong and weak also difference of return light.The power of laser is higher, and return light will be stronger.Due to return light
It is excessive to be easy to that system be caused to damage, result even in laser damage.Therefore, become laser power is higher and higher
Under gesture, to stability of the return light with the system of maintenance is handled, more stringent requirements are proposed.
Currently, in the market make high power collimator mainstream technology be all first to make end caps, then by lens into
Row collimation output.The collimator made in this way is not almost handled return light, and after laser power increases, return light increases
By force, it is easy to the stability of system be impacted, bring some potential safety problems to the safe operation of laser.
Utility model content
The utility model provides a kind of laser aligner and laser system, with solve in the prior art return light to laser
The adverse effect of device system run all right and safety.
The utility model embodiment provides a kind of laser aligner, including optical fiber, the first lens and the second lens；The light
Axis direction of fine, described first lens with second lens along the optical fiber is successively arranged；First lens have logical
Hole, the through-hole run through first lens along the axis direction of the optical fiber；First lens include the first concave surface, described
First concave surface is towards second lens or towards the optical fiber.
Further, first lens include the second concave surface；Second concave surface is towards the optical fiber or towards described
Second lens, and the direction of first concave surface is opposite with the direction of second concave surface.
Further, the lens entrance end face of second lens is to first lens, and the lens entrance end
Angle between end face and the axis of the optical fiber is less than 90 °.
Further, the outer sheath of the optical fiber is equipped with casing, and the first sleeve end of described sleeve pipe is close to described first
Lens；End face, the end face of the output end of the optical fiber of the first sleeve end are parallel with the end face at the lens entrance end.
Further, the aperture of the through-hole is greater than the diameter of the optical fiber.
Further, the axis of the axis of the through-hole, the axis of the optical fiber and second lens is overlapped.
Further, the end face of the lens exit end of second lens is convex surface, the lens exit end and described
Mirror incidence end is the ends of second lens.
Further, the end face plating of the lens exit end of second lens is formed with antireflective coating.
Further, the end face at the end face of the output end of the optical fiber and/or the lens entrance end of second lens is plated
It is formed with antireflective coating.
The utility model embodiment provides a kind of laser system, including above-mentioned laser aligner.
Laser aligner provided by the utility model and laser system, its advantages are mainly as follows:
By the way that the first lens are arranged between optical fiber and the second lens, and in the first lens, setting is passed through along shaft axis of optic fibre direction
The through-hole worn will not influence the energy of optical fiber output optical signal, will not change its transmission path；Meanwhile first lens have
The first concave surface towards the second lens or optical fiber, is capable of increasing the angle of reflection of return light, avoids return light to the bad shadow of optical fiber
It rings, the stability and safety for effectively avoiding return light from running laser system；
By second concave surface of the setting towards the second lens or optical fiber, the second lens have towards opposite two first lens
A concave surface can further enhance the first lens to the adjustment effect of the reflection angle of return light, further decrease return light
Adverse effect；The end face of the end face of the output end of optical fiber, the end face of first sleeve end and lens entrance end uses inclined-plane, and phase
Mutually parallel mode is arranged, and can further increase the reflection angle of return light, avoid the adverse effect of return light；By saturating
Mirror incidence end, lens exit end, optical fiber the end face of output end be coated with antireflective coating, can be effectively reduced return luminous intensity, into
And further decrease the adverse effect of return light.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of laser aligner of the utility model embodiment；
Fig. 2 is a kind of structural schematic diagram of the first lens of laser aligner of the utility model embodiment；
Fig. 3 is the left view of Fig. 2 of laser aligner of the utility model embodiment a kind of.
In figure, the first optical fiber of 1-, 2- coreless fiber, the first lens of 3-, the first concave surface 31-, the second concave surface 32-, 33- is logical
Hole, the second lens of 4-, 5- protection pipe, 6- sleeve, 7- casing.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Referring to figure 1 and figure 2, the utility model embodiment provides a kind of laser aligner, including optical fiber, the first lens
3 and second lens 4；The axis direction of optical fiber, the first lens 3 with the second lens 4 along optical fiber is successively arranged；First lens 3 have
Through-hole 33, through-hole 33 run through the first lens 3 along the axis direction of optical fiber；First lens 3 include the first concave surface 31, the first concave surface
31 towards the second lens 4 or towards optical fiber.
Optical fiber, the first lens 3 and the second lens 4 are sequentially arranged along the axis direction of optical fiber；The axis of preferred fiber, first
The axis of the axis of lens 3 and the second lens 4 is overlapped.The axis of through-hole 33 on first lens 3 it is also preferred that with the axis of optical fiber,
The axis of second lens 4 is overlapped.Wherein, between optical fiber and the first lens 3 and between the first lens 3 and the second lens 4 can between
Every a certain distance；The distance can appropriate adjustment according to actual needs.
Shown in Figure 3, through-hole 33 is arranged in the first lens 3, makes to pass through in the optical signals of the optical fiber output through-hole 33, can
Do not consider energy loss, will not influence conveying of the optical signal of optical fiber output to the second lens 4.Wherein, the preferred hole of through-hole 33
Diameter is greater than the diameter of optical fiber, so that the setting of the first lens 3, will not influence optical fiber optical signal to 4 direction of the second lens
Transmission；Meanwhile the aperture of through-hole 33 should not be too large, and make it possible to increase as far as possible the area of the first concave surface 31, improve first thoroughly
Reflection efficiency of the mirror 3 to return light.
First lens 3 include the first concave surface 31, and first concave surface 31 is towards the second lens 4 or towards optical fiber.Optical fiber output
The first lens of optical signals 3 through-hole 33 in be transmitted to the second lens 4, and exported via the second lens 4.Second lens 4 exist
In optical transmission process, there are the phenomenons of return light.Setting first with the first concave surface 31 is saturating between optical fiber and the second lens 4
Mirror 3, the first concave surface 31 are capable of increasing the reflection angle of return light, reduce influence of the return light to optical fiber, improve what laser used
Safety.
In a specific embodiment, shown in Figure 2, the first lens 3 include the second concave surface 32；Second concave surface, 32 face
To optical fiber or towards the second lens 4, and the direction of the first concave surface 31 is opposite with the direction of the second concave surface 32.In the various embodiments described above
On the basis of, the present embodiment further illustrates the structure of the first lens 3.The first concave surface 31 and the second concave surface 32 of first lens 3
The direction of two concave surfaces is opposite；For example, the first concave surface 31, towards the second lens 4, the second concave surface 32, can be into one towards optical fiber
Step increases the reflection angle of return light, and return shadow is effectively reduced and rings.
In a specific embodiment, the lens entrance end face of the second lens 4 is to the first lens 3, and lens entrance end
End face and optical fiber axis between angle less than 90 °.On the basis of the various embodiments described above, the present embodiment illustrates
The structure of two lens 4.
Second lens 4 include lens entrance end and lens exit end；Lens entrance end and lens exit end are the second lens 4
Two opposite ends, lens entrance end can be used as the input terminal of the second lens 4, and lens exit end can be used as the second lens 4
Output end.Wherein, lens entrance end is closer to the first lens 3.The end face at lens entrance end is also inclined-plane, i.e. the end face and light
Fine and the first lens 3 the equal out of plumb of axis.Also, the end face at the end face of the output end of optical fiber and lens entrance end is mutually flat
Row.The end face at lens entrance end uses the structure on inclined-plane, can further increase the reflection angle to return light, reduce return light
Influence.
In a specific embodiment, the outer sheath of optical fiber is equipped with casing 7, and the first sleeve end of casing 7 is close to the
One lens 3；End face, the end face of the output end of optical fiber of first sleeve end are parallel with the end face at lens entrance end.Above-mentioned each
On the basis of embodiment, the present embodiment illustrates the setting of casing 7.
Specifically, the output end of optical fiber is close to the first lens 3.It is arranged casing 7, on the outside of optical fiber convenient for fiber position
It is fixed.The internal diameter of casing 7 can be equal to or slightly larger than optical fiber outer diameter.Wherein, the inside of the one end of casing 7 far from the first lens 3
It may be configured as taper type hole, and be gradually reduced along the internal diameter of the direction casing close to the first lens, in order to which optical fiber is extend into
In casing 7.
Wherein, optical fiber may include coreless fiber 2 and the first optical fiber 1 with covering；Wherein, the first optical fiber 1 preferably uses
Big core diameter, high-power passive fiber.It is preferred that the axis of the axis of coreless fiber 2 and the first optical fiber is overlapped, and the two is along centreless
The axis direction of optical fiber 2 is arranged.Output end of the one end of coreless fiber 2 as optical fiber, the other end of coreless fiber 2 and the first light
One end connection of fibre 1；That is, coreless fiber 2 is between the first optical fiber 1 and the first lens 3.
The outer diameter of coreless fiber 2 is preferably same or similar with the outer diameter of the first optical fiber 1, so that coreless fiber and the first optical fiber
Splice loss, splice attenuation more preferably can be reduced to improve welding quality to axis in welding.Coreless fiber 2 is all sheathed in casing 7, the
One optical fiber 1 is at least partly sheathed in casing 7.It is gone back between coreless fiber 2 and casing 7 and between the first optical fiber 1 and casing 7
It can be bonded by cohesive material, to further fix optical fiber.Coreless fiber 2 is glued for example, thermal conductivity epoxy resin can be used
Tie 7 inner wall of casing.
Wherein, casing 7 preferably uses glass bushing；End face of the glass bushing close to the first sleeve end of the first lens 3
It can flush, can not flush with the end face of the output end of optical fiber, preferably the end face with the output end of optical fiber.The output end of optical fiber
End face and the end face at lens entrance end be parallel to each other.Wherein, the end face of first sleeve end is it is also preferred that not with the axis of optical fiber
Vertically；The end face of first sleeve end is preferably parallel with the end face at lens entrance end.
Using the above structure, the end face of the output end of optical fiber is parallel with the end face at lens entrance end, can be improved optical signal
The collimation of transmission；Further, the end face at the end face of first sleeve end and lens entrance end is all made of the structure on inclined-plane, can
The reflection angle for effectively increasing return light reduces influence of the return light to system run all right and safety.
Wherein, the outside of the first lens 3 and the second lens 4 can be arranged with sleeve 6；4 edge of first lens 3 and the second lens
The axis direction of sleeve 6 is embedded in sleeve 6.Wherein, sleeve 6 can be glass sleeve 6.Optical fiber, the first lens 3 and second are saturating
Mirror 4 can be embedded in sleeve 6 along the axis direction of sleeve 6, be also possible to optical fiber and be embedded in casing 7, casing 7, the first lens
3 and second lens 4 be embedded in sleeve 6 along the axis direction of sleeve 6, convenient for the fixation of optical fiber and lens.In the outside of sleeve 6
It can be also arranged protection pipe 5, be damaged to avoid optical fiber, lens.Wherein, protection metal pipe can be used in protection pipe 5.
In a specific embodiment, the end face of the lens exit end of the second lens 4 be convex surface, lens exit end and thoroughly
Mirror incidence end is the ends of the second lens.On the basis of the various embodiments described above, the present embodiment illustrates second thoroughly
The structure of mirror 4.The lens entrance end of the second lens of optical signals 4 of optical fiber transmission enters the second lens 4, and by lens exit end
Output.Lens exit end uses the structure on convex surface, improves optical signal convergence effect, avoids the diverging of optical signal.
In a specific embodiment, the end face plating of the lens exit end of the second lens 4 is formed with antireflective coating, preferably adopts
With the antireflective coating of high damage threshold.On the basis of the various embodiments described above, the present embodiment illustrates the knot of the second lens 4
Structure.It is coated with antireflective coating in lens exit end, the transmission effects of optical signal is can be improved, improves the transmittability of optical signal；Together
When, it can also reduce the energy intensity of return light.
In a specific embodiment, the end at the end face of the output end of optical fiber and/or the lens entrance end of the second lens
Face plating is formed with antireflective coating.On the basis of the various embodiments described above, the present embodiment illustrates the output end of optical fiber and lens enter
Penetrate the structure at end.
It is coated with antireflective coating in the end face of the output end of optical fiber and the end face at lens entrance end, can effectively enhance optical signal
Efficiency of transmission；Meanwhile the end face at lens entrance end is coated with antireflective coating, the energy that also can further lower return light is strong
Degree.Involved antireflective coating can be high damage threshold antireflective coating in the utility model.
In a specific embodiment, a kind of laser system is also provided comprising above-mentioned laser aligner.Wherein, swash
Photosystem may include laser output mechanism and laser aligner；Laser output mechanism and laser aligner according to conventional connection or
Setting structure.
The laser aligner and laser system of the utility model, by the way that first is arranged between optical fiber and the second lens thoroughly
Mirror, and be arranged in the first lens along the perforative through-hole in shaft axis of optic fibre direction, it will not influence the energy of optical fiber output optical signal, also not
Its transmission path can be changed；Meanwhile first lens there is the first concave surface towards the second lens or towards optical fiber, be capable of increasing back
The angle of reflection for returning light avoids adverse effect of the return light to optical fiber, the stability for effectively avoiding return light from running laser system
And safety；
By setting towards optical fiber or towards the second concave surface of the second lens, the second lens have towards opposite first lens
Two concave surfaces, the first lens can be further enhanced to the adjustment effect of the reflection angle of return light, further decreased return
The adverse effect of light；The end face of the end face of the output end of optical fiber, the end face of first sleeve end and lens entrance end uses inclined-plane,
And the mode being parallel to each other is arranged, and can further increase the reflection angle of return light, avoids the adverse effect of return light；Pass through
It is coated with antireflective coating in the end face of output end of lens entrance end, lens exit end, optical fiber, can be effectively reduced return light intensity
Degree, and then further decrease the adverse effect of return light.
The apparatus embodiments described above are merely exemplary, wherein described, unit can as illustrated by the separation member
It is physically separated with being or may not be, component shown as a unit may or may not be physics list
Member, it can it is in one place, or may be distributed over multiple network units.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativeness
Labour in the case where, it can understand and implement.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of laser aligner, which is characterized in that including optical fiber, the first lens and the second lens；The optical fiber, described first
Axis direction of the lens with second lens along the optical fiber is successively arranged；First lens have through-hole, the through-hole
Axis direction along the optical fiber runs through first lens；First lens include the first concave surface, first concave surface face
To second lens or towards the optical fiber.
2. laser aligner according to claim 1, which is characterized in that first lens include the second concave surface；It is described
Second concave surface is towards the optical fiber or towards second lens, and the direction of first concave surface and the court of second concave surface
To opposite.
3. laser aligner according to claim 1, which is characterized in that the lens entrance end face of second lens is to institute
The first lens are stated, and the angle between the end face at the lens entrance end and the axis of the optical fiber is less than 90 °.
4. laser aligner according to claim 3, which is characterized in that the outer sheath of the optical fiber is equipped with casing, described
The first sleeve end of casing is close to first lens；The end face of the first sleeve end, the output end of the optical fiber
End face is parallel with the end face at the lens entrance end.
5. laser aligner according to claim 1, which is characterized in that the aperture of the through-hole is greater than the straight of the optical fiber
Diameter.
6. laser aligner according to claim 1, which is characterized in that the axis of the axis of the through-hole, the optical fiber
It is overlapped with the axis of second lens.
7. laser aligner according to claim 3, which is characterized in that the end face of the lens exit end of second lens
For convex surface, the lens exit end and the lens entrance end are the ends of second lens.
8. laser aligner according to claim 1 or claim 7, which is characterized in that the lens exit end of second lens
End face plating is formed with antireflective coating.
9. laser aligner according to claim 3, which is characterized in that the end face of the output end of the optical fiber and/or institute
The end face plating for stating lens entrance end is formed with antireflective coating.
10. a kind of laser system, which is characterized in that including such as described in any item laser aligners of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920240368.3U CN209460452U (en) | 2019-02-26 | 2019-02-26 | Laser aligner and laser system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920240368.3U CN209460452U (en) | 2019-02-26 | 2019-02-26 | Laser aligner and laser system |
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| Publication Number | Publication Date |
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| CN209460452U true CN209460452U (en) | 2019-10-01 |
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| CN201920240368.3U Active CN209460452U (en) | 2019-02-26 | 2019-02-26 | Laser aligner and laser system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884747A (en) * | 2019-02-26 | 2019-06-14 | 武汉锐科光纤激光技术股份有限公司 | Laser aligner and laser system |
-
2019
- 2019-02-26 CN CN201920240368.3U patent/CN209460452U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109884747A (en) * | 2019-02-26 | 2019-06-14 | 武汉锐科光纤激光技术股份有限公司 | Laser aligner and laser system |
| CN109884747B (en) * | 2019-02-26 | 2024-03-08 | 武汉锐科光纤激光技术股份有限公司 | Laser collimator and laser system |
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