CN206597750U - Hand-held line source laser head - Google Patents
Hand-held line source laser head Download PDFInfo
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- CN206597750U CN206597750U CN201720222114.XU CN201720222114U CN206597750U CN 206597750 U CN206597750 U CN 206597750U CN 201720222114 U CN201720222114 U CN 201720222114U CN 206597750 U CN206597750 U CN 206597750U
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- light
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Abstract
The utility model provides a kind of hand-held line source laser head, enables to line light spot energy uniform, prevents matrix or cleaning dirty of burning, the effect of improving laser cleaning.A kind of hand-held line source laser head, including：Transmission comes from the optical fiber of the initial light of laser；The initial light can be collimated, obtain the collimating mirror of directional light；In the galvanometer of energy reciprocating rotation, the light path for being arranged on the collimating mirror, the directional light is reflected into the directional light of reciprocally swinging；The directional light of the reciprocally swinging is focused, the focus lamp of line spot is formed on focussing plane；Allow the laser light extraction during the galvanometer uniform rotation, that forbids the laser light extraction in the galvanometer speed change rotation process goes out light control unit.
Description
Technical field
The utility model is related to laser cleaning technique, more particularly to a kind of hand-held line source laser head.
Background technology
Laser cleaning technique, is the Photophysical Behaviors using laser, come remove the oxide layer of workpiece surface, skin of paint or its
His pollution layer.Its physical principle can be summarized as follows：
A) light beam of laser transmitting is absorbed by the pollution layer that need to be handled on surface.
B) absorption of big energy forms the plasma (the unstable gas of highly ionized) drastically expanded, produces impact
Ripple.
C) shock wave makes pollutant change fragmentate and be removed.
D) light impulse length must be short enough, to avoid the heat accumulation for being destroyed processed surface.
E) experiment shows that plasma results from metal surface when there is oxide on metal surface.
Wherein, plasma is only produced in the case where energy density is higher than threshold value, and this threshold value depends on removed
Pollution layer or oxide layer.This threshold effect is extremely important to effectively being cleaned in the case where ensureing base material safety.
Also there is second threshold value in the appearance of plasma.If energy density exceedes this threshold value, base material will be destroyed.For
Effective cleaning is carried out on the premise of base material safety is ensured, it is necessary to is according to circumstances adjusted laser parameter, is made light pulse
Energy density is strictly between two threshold values.
In the prior art, in order to keep laser there are enough energy, typically the hot spot after focusing on is come out all very from optical fiber
Small, only 1 to 4 millimeters, this causes cleaning area too small, and cleaning speed declines.Therefore, can be by the galvanometer of reciprocating rotation, will
Point hot spot high speed swinging after focusing, forms the linear light spot of high-velocity scanning, to increase cleaning efficiency, still, is swung because existing
When speed change, line light spot energy can be caused uneven, influence cleaning quality.
Utility model content
The purpose of this utility model is to provide for a kind of hand-held line source laser head, enables to line light spot energy equal
It is even, prevent matrix or cleaning dirty of burning, the effect of improving laser cleaning.
To achieve these goals, the utility model provides a kind of hand-held line source laser head, including：
Transmission comes from the optical fiber of the initial light of laser；
The initial light can be collimated, obtain the collimating mirror of directional light；
In the galvanometer of energy reciprocating rotation, the light path for being arranged on the collimating mirror, the directional light is reflected into reciprocally swinging
Directional light；
The directional light of the reciprocally swinging is focused, the focus lamp of line spot is formed on focussing plane；
Allow the laser light extraction during the galvanometer uniform rotation, prohibit in the galvanometer speed change rotation process
Only the laser light extraction goes out light control unit.
It is preferred that, in above-mentioned hand-held line source laser head, the collimating mirror is arranged on the optical fiber port of the optical fiber.
It is preferred that, in above-mentioned hand-held line source laser head, the spot diameter of the directional light is 20-25 millimeters.
It is preferred that, in above-mentioned hand-held line source laser head, the width of the line spot is 0.5-3 millimeters, length
For 70-100 millimeters.
It is preferred that, in above-mentioned hand-held line source laser head, a diameter of 300mm of the focus lamp, the linear light
The length of spot is 100mm.
It is preferred that, in above-mentioned hand-held line source laser head, a diameter of 200mm of the focus lamp, the linear light
The length of spot is 70mm.
It is preferred that, in above-mentioned hand-held line source laser head, in addition to：
The adjustment unit of the length of the line spot can be adjusted.
The utility model embodiment has following technique effect：
1) in the utility model embodiment, laser light extraction is controlled by going out light control unit, it is only even in galvanometer
Speed just allows light extraction when rotation, and therefore, the directional light after galvanometer reflects is also uniform rotation, what it was formed after being focused
Line spot Energy distribution is substantially uniform.
2) in the utility model embodiment, only by photocontrol is simply gone out, it just have chosen the uniform rotation rank of galvanometer
Section, and then have chosen the directional light of uniform rotation so that line spot Energy distribution is substantially uniform, and control is simple, and cost is low, with
Simple and reliable mode just obtains the line spot of basic energy balance.
3) in the utility model embodiment, the length of line spot can be adjusted, with more preferable adaptability.
According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more
Plus understand of the present utility model above-mentioned and other purposes, advantages and features.
Brief description of the drawings
It is described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter more of the present utility model specific real
Apply example.Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that
What these accompanying drawings were not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the step flow chart of the utility model embodiment of the method；
Fig. 2 is the structural representation of the utility model hand-held line source laser head embodiment.
Embodiment
Fig. 1 is the step flow chart of one embodiment of the method for the utility model, as shown in figure 1, the utility model embodiment
A kind of laser cleaning method of hand-held line source laser head is provided, it includes：
Step 101, the initial light for coming from laser is transmitted by optical fiber；
Step 102, the initial light is collimated by collimating mirror, obtains directional light；
Step 103, by the galvanometer of reciprocating rotation, the directional light is reflected into the directional light of reciprocally swinging；
Step 104, by focus lamp, the directional light of the reciprocally swinging is focused, line is formed on focussing plane
Shape hot spot；
Step 105, by going out light control unit, the laser light extraction is allowed during the galvanometer uniform rotation,
Forbid the laser light extraction during the galvanometer speed change rotates and (such as accelerates to rotate or underdrive).
It can be seen that, in the utility model embodiment, laser light extraction is controlled by going out light control unit, only in galvanometer
Just allow light extraction when uniform rotation, therefore, the directional light after galvanometer reflects is also uniform rotation, it is formed after being focused
Line spot Energy distribution it is substantially uniform.
In an embodiment of the method for the present utility model, the collimating mirror is arranged on the optical fiber port of the optical fiber.It is described flat
The spot diameter of row light is 20-25 millimeters.The width of the line spot is 0.5-3 millimeters, and length is 70-100 millimeters.Example
Such as, when from 300mm lens focus, the length of line spot is about 100mm；When from 200mm lens focus, linear light
The length of spot is about 70mm.
Fig. 2 is the structural representation of the utility model hand-held line source laser head embodiment, as shown in Fig. 2 a kind of hand
Formula line source laser head is held, including：
Transmission comes from the optical fiber 210 of the initial light of laser；
The initial light can be collimated, obtain the collimating mirror 220 of directional light；
In the galvanometer 230 of energy reciprocating rotation, the light path for being arranged on the collimating mirror, the directional light is reflected into toward physical pendulum
Dynamic directional light；
The directional light of the reciprocally swinging is focused, the focus lamp 240 of line spot is formed on focussing plane；
Allow the laser light extraction during the galvanometer uniform rotation, prohibit in the galvanometer speed change rotation process
Only the laser light extraction goes out light control unit 250.
It can be seen that, in the utility model embodiment, laser light extraction is controlled by going out light control unit, only in galvanometer
Just allow light extraction when uniform rotation, therefore, the directional light after galvanometer reflects is also uniform rotation, it is formed after being focused
Line spot Energy distribution it is substantially uniform.
In the embodiment of hand-held linear light source laser of the present utility model, the collimating mirror 220 is arranged on the light
Fine optical fiber port 211.
The spot diameter of the directional light is 20-25 millimeters.The width of the line spot is 0.5-3 millimeters, and length is
70-100 millimeters.
In the embodiment of hand-held linear light source laser of the present utility model, a diameter of 300mm of the focus lamp, institute
The length for stating line spot is 100mm.
In the embodiment of hand-held linear light source laser of the present utility model, a diameter of 200mm of the focus lamp, institute
The length for stating line spot is 70mm.
In the embodiment of hand-held linear light source laser of the present utility model, in addition to：Adjustment unit, for adjusting
State the length of line spot.For example, the hard-over by controlling galvanometer, to control the length of shape hot spot, now, adjustment unit
Connect the rotating unit of galvanometer；Or by controlling the time interval of light extraction, in the range of the angular interval that galvanometer is swung
Just allow light extraction, so that the length of line spot is controlled, now, adjustment unit connecting laser.
It is more equal for the energy of line spot in the embodiment of hand-held linear light source laser of the present utility model
It is even, it is necessary to which each point of focus after focusing in line spot stops identical duration, that is, the focus moved is in unit
Inswept identical length is wanted in time as far as possible, and the position of focus is L*sin α, wherein α is angle, the angle of rotation speed with galvanometer
Degree is related；L is distance of the galvanometer to focus lamp, therefore, it can control the rotational angular velocity of galvanometer sinusoidal to offset this
Influence so that each point of the focus in line spot stops identical duration.It is, therefore, possible to provide one can control galvanometer
The pivoting controller of rotational angular velocity, presets a rotation curve for offsetting the sinusoidal influence so that mobile focus
Inswept identical length is wanted within the unit interval as far as possible.Certainly, this can add control difficulty and control cost.
From the foregoing, it will be observed that the utility model has the advantage that：
1) in the utility model embodiment, laser light extraction is controlled by going out light control unit, it is only even in galvanometer
Speed just allows light extraction when rotation, and therefore, the directional light after galvanometer reflects is also uniform rotation, what it was formed after being focused
Line spot Energy distribution is substantially uniform.
2) in the utility model embodiment, only by photocontrol is simply gone out, it just have chosen the uniform rotation rank of galvanometer
Section, and then have chosen the directional light of uniform rotation so that line spot Energy distribution is substantially uniform, and control is simple, and cost is low, with
Simple and reliable mode just obtains the line spot of basic energy balance.
3) in the utility model embodiment, the length of line spot can be adjusted, with more preferable adaptability.
So far, although those skilled in the art will appreciate that herein it is detailed have shown and described it is of the present utility model many
Individual exemplary embodiment, still, still can be public according to the utility model in the case where not departing from the utility model spirit and scope
The content opened directly determines or derived many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new
The scope of type is understood that and regarded as to cover other all these variations or modifications.
Claims (7)
1. a kind of hand-held line source laser head, it is characterised in that including：
Transmission comes from the optical fiber of the initial light of laser；
The initial light can be collimated, obtain the collimating mirror of directional light；
In the galvanometer of energy reciprocating rotation, the light path for being arranged on the collimating mirror, the directional light is reflected into the flat of reciprocally swinging
Row light；
The directional light of the reciprocally swinging is focused, the focus lamp of line spot is formed on focussing plane；
Allow the laser light extraction during the galvanometer uniform rotation, institute is forbidden in the galvanometer speed change rotation process
That states laser light extraction goes out light control unit.
2. hand-held line source laser head according to claim 1, it is characterised in that the collimating mirror is arranged on the light
Fine optical fiber port.
3. hand-held line source laser head according to claim 1, it is characterised in that
The spot diameter of the directional light is 20-25 millimeters.
4. hand-held line source laser head according to claim 3, it is characterised in that
The width of the line spot is 0.5-3 millimeters, and length is 70-100 millimeters.
5. hand-held line source laser head according to claim 4, it is characterised in that
A diameter of 300mm of the focus lamp, the length of the line spot is 100mm.
6. hand-held line source laser head according to claim 4, it is characterised in that
A diameter of 200mm of the focus lamp, the length of the line spot is 70mm.
7. hand-held line source laser head according to claim 4, it is characterised in that also include：
The adjustment unit of the length of the line spot can be adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720222114.XU CN206597750U (en) | 2017-03-09 | 2017-03-09 | Hand-held line source laser head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720222114.XU CN206597750U (en) | 2017-03-09 | 2017-03-09 | Hand-held line source laser head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206597750U true CN206597750U (en) | 2017-10-31 |
Family
ID=60147010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720222114.XU Active CN206597750U (en) | 2017-03-09 | 2017-03-09 | Hand-held line source laser head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206597750U (en) |
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2017
- 2017-03-09 CN CN201720222114.XU patent/CN206597750U/en active Active
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