CN209172499U - A kind of laser output device - Google Patents
A kind of laser output device Download PDFInfo
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- CN209172499U CN209172499U CN201821563406.0U CN201821563406U CN209172499U CN 209172499 U CN209172499 U CN 209172499U CN 201821563406 U CN201821563406 U CN 201821563406U CN 209172499 U CN209172499 U CN 209172499U
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- laser
- galvanometer
- output device
- laser output
- reflecting mirror
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Abstract
The utility model provides a kind of laser output device, including main part and positioning region, and the main part includes laser light incident mouth, galvanometer scanning system, focuses field lens and imaging system.The optical axial of the imaging system is parallel with the focusing optical axial of field lens, so that the optical range of the two can cover the working range, it avoids obtaining and there is Severe distortion or unsharp image, facilitate the location information of focus point described in accurate judgement；After the positioning region carries out first time positioning to the focus point, the galvanometer scanning system further carries out second to the focus point in the working range according to the location information of the focus point and positions, so that second laser is realized and the confocal output of first laser, avoids of the existing technology position and problem is not allowed.
Description
Technical field
The utility model relates to field of optical measuring technologies more particularly to a kind of laser output devices.
Background technique
When laser irradiation biological tissue, disease damage tissue can generate selective absorbing to light radiation.Rationally control irradiation
Dosage, range and time for exposure can make disease damage tissue further by the region where the thermal energy limitation disease damage tissue of generation
It is stimulated, solidifies or occurs vaporization defect, while the normal tissue of surrounding not will receive destruction.Laser is led applied to medicine
Domain avoids contact infection, largely improves the quality of operation since there is no the Mechanical Contact with disease damage tissue
And safety.
Since therapentic part is there are many different type tissues, there is different absorptivities to Same Wavelength laser, for up to
To good therapeutic effect, need to irradiate same therapentic part using the laser of at least two-way different wave length.Existing skill
Art carries out the laser surgey of multi-wavelength usually using the Single wavelength laser of several different wave lengths, judges to gather by range estimation and experience
Focus and coaxial position, the problem for be easy to causeing positioning inaccurate, reduce the safety of laser surgey.
Notification number is that the Chinese utility model patent of CN202335924U discloses a kind of pair applied to laser hair removal device
The emitting light path of infrared laser and visible laser is arranged in wavelength laser coaxial output optical device, the semi-transparent semi-reflecting lens of the device
On, it is ensured that the alignment of Double passage laser, but the device can not be such that the biggish infrared laser of wavelength difference and visible laser has
Confocal property, however it remains position inaccurate problem.
Therefore, it is necessary to provide the novel laser output device of one kind to solve the above-mentioned problems in the prior art.
Utility model content
The purpose of this utility model is to provide a kind of laser output devices, are carried out for the first time by positioning region to focus point
Positioning further carries out second to focus point in conjunction with imaging system and galvanometer scanning system and positions, second laser output is made to exist
On the focus point of working face formed by the first laser, avoid existing in the prior art position that problem is not allowed.
To achieve the above object, the laser output device of the utility model, including main part and positioning region, the master
Body portion includes laser light incident mouth, galvanometer scanning system, focuses field lens and imaging system；The laser light incident mouth is located at the main body
The side in portion, for entering the main part for the second laser；The galvanometer scanning system is for changing described incident sharp
The optical path of light makes the entrance pupil position of the second laser front focus position for focusing field lens；The focusing field lens is located at
Immediately below the galvanometer scanning system, for making the second laser output in the focus point；The positioning region includes fixed
Position frame and positioning ring, the locating rack are used to support the main part, and the positioning ring is for limiting work on the working face
Make range, to carry out first time positioning to the focus point；The imaging system is used to carry out second to the focus point to determine
Position, the optical axial of the imaging system is parallel with the focusing optical axial of field lens, the optical range of the imaging system
Not less than the working range.
The beneficial effect of laser output device described in the utility model is: on the one hand, the optic axis of the imaging system
Line is parallel with the focusing optical axial of field lens, can make the first laser in the case where any field angle all perpendicular to
Focal plane, and the imaging system and the optical range for focusing field lens can cover the working range, avoid simultaneously
There is Severe distortion or unsharp image in the imaging system acquisition, facilitates the position letter of focus point described in accurate judgement
Breath；On the other hand, after the positioning region carries out the first time positioning to the focus point, the galvanometer scanning system is according to institute
It states described in the location information of focus point further carries out the focus point in the working range that the positioning region limits
Second positions so that the second laser realize with the confocal output of the first laser, avoid of the existing technology
Position inaccurate problem.
Preferably, the focusing field lens is that telecentricity focuses field lens.The beneficial effect is that: the telecentricity field lens can make institute
Stating second laser can be coaxially defeated with the first laser to realize perpendicular to focal plane in the case where any field angle
Out.
Preferably, the diameter of the positioning ring is 10-50mm.The beneficial effect is that: in the prior art, commonly use laser
Spot diameter is focused generally in 1mm hereinafter, the diameter of positioning ring is set as 10-50mm, on the one hand convenient for users to passing through positioning
Ring carries out first time positioning to the focus point, on the other hand also meets the application scenarios requirement of laser medicine.
Preferably, the galvanometer scanning system includes the first galvanometer scanning unit and the second galvanometer scanning unit, and described the
The optical axial of one galvanometer scanning system is vertical with the working face, the optical axial of second galvanometer scanning system with it is described
Working face is parallel.The beneficial effect is that: since the laser light incident mouth is located at the side of the main part.Optical axial is set
Orthogonal two sets of galvanometer scanning systems help to make the entrance pupil position of the incident laser preceding coke for focusing field lens
Point position, to realize coaxial output of the second laser with the first laser.
It is further preferred that first galvanometer scanning unit includes the first galvanometer and first from top to bottom set gradually
Reflecting mirror, second galvanometer scanning unit include the second galvanometer and the second reflecting mirror set gradually from left to right, and described
The optical axial of the optical axial of one reflecting mirror and second reflecting mirror is generally aligned in the same plane, and first galvanometer is for driving
First reflecting mirror is swung around the axis of first galvanometer, and second galvanometer is for driving second reflecting mirror
Axis around second galvanometer is swung.
Still more preferably, the center deflection angle of first reflecting mirror is more than or equal to -15 degree and is less than or equal to+15
Degree, the center deflection angle of second reflecting mirror are more than or equal to -15 degree and are less than or equal to+15 degree.
Preferably, the imaging system includes CCD camera, the optical axial of the CCD camera and the focusing field lens
Optical axial is parallel.The beneficial effect is that: the optical axial of the CCD camera and the optical axial for focusing field lens are flat
Row avoids acquisition from Severe distortion or unsharp image occur, facilitates the location information of focus point described in accurate judgement.
It is further preferred that the CCD camera includes wide-angle lens, the visual angle of the wide-angle lens is 60-118 degree, burnt
Away from being 30-80 millimeters, diameter is 1-8 millimeters.
It is further preferred that the imaging system further includes lighting unit, the lighting unit is located at close to the wide-angle
The position of lens edge.The beneficial effect is that: clearly image is obtained convenient for the CCD camera.
Detailed description of the invention
Fig. 1 is the schematic diagram of internal structure of the laser output device of the utility model；
Fig. 2 is the cross-sectional view along the direction A-A ' shown in FIG. 1；
Fig. 3 is the bottom view of imaging system shown in FIG. 1；
Fig. 4 is the light path schematic diagram that erbium laser forms focus point in working face；
Fig. 5 is light path schematic diagram of the carbon dioxide laser inside the laser output device of the utility model.
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.Unless otherwise defined, the technical term or scientific term used herein is should be practical
The ordinary meaning that personage in novel fields with general technical ability is understood.The similar word such as " comprising " used herein
The meaning of one's words points out that element or object before the existing word are covered the element for appearing in the word presented hereinafter or object and its be equal,
And it is not excluded for other elements or object.
In view of the problems of the existing technology, the embodiments of the present invention are provided for making the confocal output of second laser
Laser output device on the focus point that face surface is formed by first laser, the laser output device include main part
The positioning region and.The main part has laser light incident mouth, galvanometer scanning system, focuses field lens and imaging system.The galvanometer is swept
The system of retouching changes the optical path of the second laser, makes the entrance pupil position of the second laser front focus position for focusing field lens
It sets.
In some embodiments of the utility model, the focusing field lens is that telecentricity focuses field lens.
In some embodiments of the utility model, the positioning region has locating rack and positioning ring, and the locating rack is for branch
The main part is supportted, for limiting the working range on the working face, the diameter of the positioning ring is the positioning ring
10-50mm。
In some embodiments of the utility model, the galvanometer scanning system has the first galvanometer scanning unit and the second galvanometer
The optical axial of scanning element, first galvanometer scanning system is vertical with the working face, second galvanometer scanning system
Optical axial it is parallel with the working face.
In some embodiments of the utility model, first galvanometer scanning unit has first from top to bottom set gradually
Galvanometer and the first reflecting mirror, second galvanometer scanning unit have the second galvanometer set gradually from left to right and the second reflection
The optical axial of mirror, the optical axial of first reflecting mirror and second reflecting mirror is generally aligned in the same plane, first vibration
For mirror for driving first reflecting mirror to be swung around the axis of first galvanometer, second galvanometer is described for driving
Second reflecting mirror is swung around the axis of second galvanometer.The center deflection angle of first reflecting mirror is more than or equal to -15
+ 15 degree are spent and are less than or equal to, the center deflection angle of second reflecting mirror is more than or equal to -15 degree and less than or equal to+15 degree.
In some embodiments of the utility model, the imaging system has CCD camera and lighting unit, the CCD camera
Optical axial it is parallel with the focusing optical axial of field lens, the CCD camera have wide-angle lens, the wide-angle lens
Visual angle is 60-118 degree, and focal length is 30-80 millimeters, and diameter is 1-8 millimeters, and the lighting unit is located at close to the wide-angle lens
The position at edge.In some specific embodiments of the present invention, the diameter of the wide-angle lens is 5.5 millimeters.
In some embodiments of the utility model, the lighting unit is at least one light emitting diode (Light
Emitting Diode, LED) lamp, the LED light is positioned at the position close to the wide-angle lens edge.
Fig. 1 is the schematic diagram of internal structure of the laser output device of some embodiments of the utility model, and Fig. 2 is shown in Fig. 1
Main part along the direction A-A ' sectional view.
Referring to Figures 1 and 2, laser light incident mouth 11 enters the laser output device 1 for second laser (being mark in figure)；
There is first galvanometer scanning unit 12 the first galvanometer 121 from top to bottom set gradually and the first reflecting mirror 122, the second galvanometer to sweep
Retouching unit 13 has the second galvanometer 131 and the second reflecting mirror 132 set gradually from left to right.First reflecting mirror 122
The optical axial of optical axial and second reflecting mirror 132 is generally aligned in the same plane, and first galvanometer 121 is described for driving
First reflecting mirror 122 is swung around the axis of first galvanometer 121, and second galvanometer 131 is for driving described second
Reflecting mirror 132 is swung around the axis of second galvanometer 131.
Positioning region 14 includes positioning ring 141 and locating rack 142, and the locating rack 142 is for playing a supporting role.It is described fixed
Position ring 141 is for limiting working range, to carry out first time positioning to the focus point.Imaging system 15 clicks through the focusing
Second of positioning of row, the optical axial of the imaging system 15 is parallel with the telecentricity focusing optical axial of field lens 16, the imaging
The optical range of system 15 is not less than the working range limited by the positioning ring 141.
Fig. 3 is the bottom view of imaging system shown in Fig. 2.The imaging system 15 includes CCD camera 151 and 4 LED light
152, for 152 array distribution of LED light on the periphery of the CCD camera, the LED light 152 can be the CCD camera 151
Illumination is provided, the CCD camera 151 is made to obtain clearly image.
The utility model erbium laser and wavelength that it is 2.94 μm that some embodiments provide a kind of using wavelength are 10.6 μm
Carbon dioxide laser realize coaxial confocal output implementation method.Fig. 4 is the erbium laser in working face formation focus point
Index path, Fig. 5 are light path schematic diagram of the carbon dioxide laser inside the laser output device.
Referring to Fig. 4, erbium laser 41 is formed into focus point 44 by 42 vertical focusing of field lens to the surface of skin 43 first,
It is higher to the absorptivity of water since the wavelength of erbium laser 41 is located exactly at the maximum absorption peak value of water, the skin 43 can be made
Epidermis 431 be rapidly heated, to strip epidermis, form the skin injury mouth of 300-800 μm of diameter range, it is difficult to touch
Skin corium 432.In addition, the surface of a wound of the skin injury mouth is smaller, and is easy healing, the influence to patient is small, improves operation
Safety.
Referring to Fig.1 and Fig. 5, the laser output device 1 is placed on to the surface of the skin 43, makes the focus point 44
To carry out first time positioning in the range of being limited by the positioning ring 141, the diameter of the positioning ring 141 is 20mm；It opens
The imaging system 15 is moved, the image including the focus point 43 is obtained, described image is sent to and the laser is exported and filled
Set the computer (not indicating in figure) of electrical connection.Identifying processing is carried out to described image by computer, the focusing is clicked through
Second of positioning of row, to generate location information.Carbon dioxide laser 51 is introduced into the laser by the laser light incident mouth 11
Output device 1, the location information generated by computer (not indicating in figure) control first galvanometer 121 and drive described first
Reflecting mirror 122 is swung around the axis of first galvanometer 121, while second galvanometer 131 drives second reflection
Mirror 132 is swung around the axis of second galvanometer 131, to change the optical path of the carbon dioxide laser 51, due to described
Telecentricity focuses field lens 16 itself, and there is special structure to design, and the entrance pupil position of the carbon dioxide laser 51 is poly- for the telecentricity
The front focus position of burnt field lens 16, and field lens 16 is focused along the direction output perpendicular to 42 surface of skin by the telecentricity
On the focus point 44, so that so that wavelength is differed the biggish carbon dioxide laser 51 and the erbium laser 41 realizes together
The confocal output of axis.
Referring to Fig. 5, first reflecting mirror 122 is axis progress with the mirror surface center line 52 of first reflecting mirror 122
It swings, the center deflection angle of first reflecting mirror 122 is more than or equal to -15 degree and is less than or equal to+15 degree.Described second is anti-
It penetrates mirror 132 to swing up and down with the mirror surface center line 53 of second reflecting mirror 132 for axis, second reflecting mirror 132
Center deflection angle be more than or equal to -15 degree and be less than or equal to+15 degree.
Since the moisture content of the skin corium 422 may be up to 80%, the carbon dioxide laser 51 to the absorptivity of water compared with
It is low, the skin corium 532 can be goed deep into along the skin injury mouth generated by the erbium laser 41, and then make disease damage tissue gas
Change, to improve the effect for the treatment of.If can directly be caused to the epidermis 421 biggish with the carbon dioxide laser 51
The surface of a wound influences postoperation recovery, reduces the safety of operation.
Although the embodiments of the present invention is hereinbefore described in detail, come for those skilled in the art
It says it is readily apparent that can these embodiments be carry out various modifications and be changed.However, it is understood that this modification and change
Change belongs within the scope of the utility model described in the claims and spirit.Moreover, described herein practical new
Type can have other embodiments, and can be practiced or carried out in several ways.
Claims (9)
1. a kind of laser output device, for making second laser is confocal to export the focusing formed in face surface by first laser
On point, which is characterized in that the laser output device includes main part and positioning region, the main part include laser light incident mouth,
Galvanometer scanning system focuses field lens and imaging system；
The laser light incident mouth is located at the side of the main part, for entering the main part for the second laser；
The galvanometer scanning system keeps the entrance pupil position of the second laser described for changing the optical path of the incident laser
Focus the front focus position of field lens；
The focusing field lens is located at immediately below the galvanometer scanning system, for making the second laser output in the focus point
On；
The positioning region includes locating rack and positioning ring, and the locating rack is used to support the main part, and the positioning ring is used for
Working range is limited on the working face, to carry out first time positioning to the focus point；
The imaging system is positioned for carrying out second to the focus point, and the optical axial of the imaging system gathers with described
The optical axial of burnt field lens is parallel, and the optical range of the imaging system is not less than the working range.
2. laser output device as described in claim 1, which is characterized in that the focusing field lens is that telecentricity focuses field lens.
3. laser output device as described in claim 1, which is characterized in that the diameter of the positioning ring is 10-50mm.
4. laser output device as described in claim 1, which is characterized in that the galvanometer scanning system includes that the first galvanometer is swept
Unit and the second galvanometer scanning unit are retouched, the optical axial of first galvanometer scanning system is vertical with the working face, described
The optical axial of second galvanometer scanning system is parallel with the working face.
5. laser output device as claimed in claim 4, which is characterized in that first galvanometer scanning unit include by up to
Under the first galvanometer and the first reflecting mirror that set gradually, second galvanometer scanning unit includes set gradually from left to right
The optical axial of two galvanometers and the second reflecting mirror, the optical axial of first reflecting mirror and second reflecting mirror is located at same
Plane, first galvanometer is for driving first reflecting mirror to be swung around the axis of first galvanometer, and described second
Galvanometer is for driving second reflecting mirror to be swung around the axis of second galvanometer.
6. laser output device as claimed in claim 5, which is characterized in that the center deflection angle of first reflecting mirror is greater than
Equal to -15 degree and it is less than or equal to+15 degree, the center deflection angle of second reflecting mirror is more than or equal to -15 degree and is less than or equal to+15
Degree.
7. laser output device as described in claim 1, which is characterized in that the imaging system includes CCD camera, described
The optical axial of CCD camera is parallel with the focusing optical axial of field lens.
8. laser output device as claimed in claim 7, which is characterized in that the CCD camera includes wide-angle lens, described wide
The visual angle of angle mirror head is 60-118 degree, and focal length is 30-80 millimeters, and diameter is 1-8 millimeters.
9. laser output device as claimed in claim 8, which is characterized in that the imaging system further includes lighting unit, institute
Lighting unit is stated to be located at close to the position at the wide-angle lens edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563406.0U CN209172499U (en) | 2018-09-22 | 2018-09-22 | A kind of laser output device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821563406.0U CN209172499U (en) | 2018-09-22 | 2018-09-22 | A kind of laser output device |
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| Publication Number | Publication Date |
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| CN209172499U true CN209172499U (en) | 2019-07-30 |
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ID=67360250
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821563406.0U Active CN209172499U (en) | 2018-09-22 | 2018-09-22 | A kind of laser output device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109363767A (en) * | 2018-09-22 | 2019-02-22 | 上海市激光技术研究所 | A kind of laser output device and method of adjustment |
-
2018
- 2018-09-22 CN CN201821563406.0U patent/CN209172499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109363767A (en) * | 2018-09-22 | 2019-02-22 | 上海市激光技术研究所 | A kind of laser output device and method of adjustment |
| CN109363767B (en) * | 2018-09-22 | 2024-03-29 | 上海市激光技术研究所有限公司 | Laser output device and adjustment method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 770 Yishan Road, Xuhui District, Shanghai, 201233 Patentee after: Shanghai Laser Technology Research Institute Co.,Ltd. Address before: No. 770 Yishan Road, Xuhui District, Shanghai, 201233 Patentee before: Shanghai Institute of Laser Technology |
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| CP01 | Change in the name or title of a patent holder |