CN208636554U - A kind of medical F-theta optical lens of laser - Google Patents
A kind of medical F-theta optical lens of laser Download PDFInfo
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- CN208636554U CN208636554U CN201821274483.4U CN201821274483U CN208636554U CN 208636554 U CN208636554 U CN 208636554U CN 201821274483 U CN201821274483 U CN 201821274483U CN 208636554 U CN208636554 U CN 208636554U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 63
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 210000001747 pupil Anatomy 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 12
- 239000005308 flint glass Substances 0.000 claims description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims description 8
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 8
- 239000005331 crown glasses (windows) Substances 0.000 claims description 4
- 238000009738 saturating Methods 0.000 claims description 2
- 239000000571 coke Substances 0.000 claims 1
- 231100000241 scar Toxicity 0.000 abstract description 6
- 206010040925 Skin striae Diseases 0.000 abstract description 4
- 230000035935 pregnancy Effects 0.000 abstract description 4
- 230000001153 anti-wrinkle effect Effects 0.000 abstract description 3
- 230000003796 beauty Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 210000003128 head Anatomy 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 235000002673 Dioscorea communis Nutrition 0.000 description 1
- 241000544230 Dioscorea communis Species 0.000 description 1
- 208000035753 Periorbital contusion Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
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- 239000000049 pigment Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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Abstract
The utility model relates to a kind of medical F-theta optical lens of laser, F-theta optical lens include the first lens, the second lens and the third lens set gradually along incident ray transmission direction, wherein, first lens are concave-convex type negative lens, second lens are concave-convex type positive lens, the third lens are biconvex positive lens, and the light incident surface and light-emitting face of the first lens and the third lens bend towards light transmission direction；2 ω=50 ° of field angle of the F-theta optical lens, Entry pupil diameters are not more than 6mm, scanning range 51mm × 51mm.The utility model can solve current non-wound laser beauty industry, such as striae of pregnancy reparation, scar reparation, scan area is small when tender skin anti-wrinkle etc. is treated causes treatment speed slow, treatment focal point spot diameter is excessive to cause the problems such as treating wound, to meet, laser beautifying industry is noninvasive to change skin, the requirement of scar reparation.
Description
Technical field
The utility model belongs to optical lens technology field, is related to a kind of medical F-theta optical lens of laser.
Background technique
With the development of laser technology, a brand-new application branch of learning --- laser medicine is gradually formed, the uniqueness of laser
Advantage solves traditional medicine indeterminable many problems in basic research and clinical application, causes domestic and international medicine
The attention on boundary.In laser skin beauty treatment fields more particularly to striae of pregnancy reparation；Scar reparation (caesarean birth scar, burn wound
Deng)；Improve vergeture (striae of pregnancy, fat line etc.)；Tender skin anti-wrinkle (coarse, pachylosis of aging wrinkle, pore etc.)；Desalination
When pigment such as goes the treatment of black eye, generallys use and non-strip off 1550nm optical fiber lattice laser therapeutic apparantus.The therapeutic equipment is controlled
Treatment head is handheld scanner；It further include F-theta optical lens in addition to scanning galvanometer in the scanner.
F-theta optical lens are by introducing barrel distortion, and Lai Shixian light is mobile with constant speed, i.e. scanning rotation
Angle and imaging surface on picture point the linear functional relation of movement, to realize a kind of controllable optical frames of laser scanning speed
Head.Human body illing skin is treated due to needing to hold for a long time, the optical mirror slip compared with industry in the scanner
Clear aperature is smaller, lighter in weight, and scanning range is also smaller.F-theta optical lens currently used for 1550nm dot matrix laser
Generally existing treatment maximum scan range is smaller, and medical laser f-theta camera lens scanning range currently on the market is all limited, also
Not having scanning range is more than the f-theta camera lens of 50mm × 50mm, it is difficult to realize that large area is quickly treated, the bigger scanning of use
The linearity that range will lead to scanning is poor.In addition, the scanning light spot of 1550nm optical fiber lattice laser is in the straight of focal point at present
Diameter is usually larger, is easy to cause wound to treatment skin, is unfavorable for restoring；It is unable to satisfy quick, non-invasive therapy requirement.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of medical F-theta optical lens of laser, the mirrors
Head can solve current non-wound laser beauty industry, such as striae of pregnancy reparation, and scar reparation, it is smaller that tender skin anti-wrinkle etc. treats area
Cause treatment speed slow, treatment focal point spot diameter is excessive to cause the problems such as treating wound, and it is noninvasive to meet laser beautifying industry
Change skin, the requirement of scar reparation.
In order to achieve the above object, the utility model provides the following technical solutions:
A kind of medical F-theta optical lens of laser, the F-theta optical lens include along incident ray transmission direction
The first lens, the second lens and the third lens set gradually, wherein first lens are concave-convex type negative lens, described the
Two lens are concave-convex type positive lens, and the third lens are biconvex positive lens, the light incident surface of the first lens and the third lens
Light transmission direction is bent towards with light-emitting face；2 ω=50 ° of field angle of the F-theta optical lens, Entry pupil diameters are little
In 6mm, scanning range 51mm × 51mm.
Further, the focal length of each lens meets with the system focal length of the F-theta optical lens respectively:
- 0.7 < f1/f < -0.5
0.7 < f2/f < 0.9
1.0 < f3/f < 1.1
Wherein, f1 is the focal length of first lens, and f2 is the focal length of second lens, and f3 is the third lens
Focal length, f are the system focal length of the F-theta optical lens.
Further, system focal length of the focal length of each lens respectively with the F-theta optical lens meets f1/f
=-0.572；F2/f=0.737；F3/f=1.077.
Further, in the above-mentioned medical F-theta optical lens of laser, first lens include first surface and
Two curved surfaces, wherein the radius of curvature of the first surface is -19.7mm, the radius of curvature of second curved surface is -
112.15mm；The center thickness of first lens is 2.1mm.
Further, in the above-mentioned medical F-theta optical lens of laser, second lens include third curved surface and
Four curved surfaces, wherein the radius of curvature of the third curved surface is -72.6mm, and the radius of curvature of the 4th curved surface is -30.22mm；
The center thickness of second lens is 7.48mm.
Further, in the above-mentioned medical F-theta optical lens of laser, the third lens include the 5th curved surface and the
Six curved surfaces, wherein the radius of curvature of the 5th curved surface is 1940.88mm, the radius of curvature of the 6th curved surface is-
72.72mm；The center thickness of the third lens is 9.54mm.
Further, in the above-mentioned medical F-theta optical lens of laser, the material of first lens is crown glass,
First index of refraction in lens is 1.52；The material of second lens is attached most importance to lanthanum flint glass, second index of refraction in lens
It is 1.80；The material of the third lens is attached most importance to lanthanum flint glass, and the third lens refractive index is 1.80.
Further, in the above-mentioned medical F-theta optical lens of laser, first lens and laser scanning galvanometer
Distance is between 16mm~24mm.
Further, in the above-mentioned medical F-theta optical lens of laser, first lens and second lens exist
Spacing on optical axis is 1.25mm；Second lens and spacing of the third lens on optical axis are 1.30mm.
Further, the wavelength of the laser is the laser of 1550nm.
The utility model has the beneficial effects that: the utility model uses three-chip type f-theta optical lens design, very well
Correct aberration.Cooperation laser beautifying X/Y scanning galvanometer realizes 0~25 ° of linear scan of angle of half field-of view, and scan area is big, burnt
Hot spot at point reaches diffraction limit；Realize large area, small focal beam spot, quick non-invasive therapy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the medical F-theta optical lens of the utility model laser.
Fig. 2 is the ray tracing figure of the medical F-theta optical lens of the utility model laser.
Fig. 3 is the disperse hot spot figure of the medical F-theta optical lens of the utility model laser.
Fig. 4 is the medical F-theta optical lens curvature of field of the utility model laser and distortion figure.
Fig. 5 is the optical transfer function MTF curve schematic diagram of the medical F-theta optical lens of the utility model laser.
Specific embodiment
The preferred embodiments that according to the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the medical F-theta optical lens of the utility model laser, a length of 1550nm's of figure medium wave
The first lens L1, the second lens L2 and the third lens L3 that laser is set gradually along incident ray transmission direction, wherein described
One lens L1 be concave-convex type negative lens, the second lens L2 be concave-convex type positive lens, the third lens L3 be biconvex just
The light incident surface and light-emitting face of lens, the first lens L1 and the third lens L3 bend towards light transmission direction；The f-theta light
2 ω=50 ° of field angle of camera lens are learned, Entry pupil diameters 6mm, scanning range 51mm × 51mm, certain laser may be that wavelength exists
The laser of other wavelength near 1550nm.
In the present embodiment, the focal length of each lens meets with the system focal length of the F-theta optical lens respectively:
- 0.7 < f1/f < -0.5
0.7 < f2/f < 0.9
1.0 < f3/f < 1.1
Wherein, f1 is the focal length of the first lens L1, and f2 is the focal length of the second lens L2, and f3 is that the third is saturating
The focal length of mirror L3, f are the system focal length of the F-theta optical lens.The focal length of preferential each lens respectively with institute
The system focal length for the F-theta optical lens stated meets f1/f=-0.572；F2/f=0.737；F3/f=1.077.
The first lens L1 includes first surface S1 and the second curved surface S2, wherein the curvature of the first surface S1 half
Diameter is -19.7mm, and the radius of curvature of the second curved surface S2 is -112.15mm；The center thickness d1 of the first lens L1 is
2.1mm。
The second lens L2 includes third curved surface S3 and the 4th curved surface S4, wherein the curvature of the third curved surface S3 half
Diameter is -72.6mm, and the radius of curvature of the 4th curved surface S4 is -30.22mm；The center thickness d3 of the second lens L2 is
7.48mm。
The third lens L3 includes the 5th curved surface S5 and the 6th curved surface S6, wherein the curvature of the 5th curved surface S5 half
Diameter is 1940.88mm, and the radius of curvature of the 6th curved surface S6 is -72.72mm；The center thickness d5 of the third lens L3 is
9.54mm。
The material of the first lens L1 is crown glass, and the first lens L1 refractive index is 1.52；Second lens
The material of L2 is attached most importance to lanthanum flint glass, and the second lens L2 refractive index is 1.80；The material of the third lens L3 is attached most importance to lanthanum
Flint glass, the third lens L3 refractive index are 1.80.
It should be noted that in the present embodiment, choosing the material of the first lens L1 as a kind of preferred embodiment
For the H-K9L in crown glass；Choose the H-ZLAF50E that the material of the second lens L2 is attached most importance in lanthanum flint glass；Choose institute
State the H-ZLAF50E that the material of the third lens L3 is attached most importance in lanthanum flint glass.
The first lens L1 at a distance from laser scanning galvanometer between 16mm~24mm, the first lens L1 and institute
Stating spacing d2 of the second lens L2 on optical axis is 1.25mm；The second lens L2 and the third lens L3 are on optical axis
Spacing d4 is 1.30mm；The spacing d6 of the third lens L3 and imaging surface on optical axis is 101.3mm.
Above-mentioned specific structural parameters are as follows:
Fig. 2 is the ray tracing figure of the medical F-theta optical lens of the utility model laser.Laser scanning radius in figure
R is 36.6mm, therefore the scanning range can reach φ 72mm diameter range, due to generally requiring laser beam perpendicular to be treated
Skin area, therefore scannable effective diameter is 73 × 0.707=51mm, scannable effective range 51mm × 51mm.
Fig. 3 is the disperse hot spot schematic diagram of the medical F-theta optical lens of the utility model laser.As shown, each view
For the disperse hot spot of field all in Airy, aberration correction has had reached diffraction limit, has obtained good correction.
Fig. 4 is the curvature of field and distortion schematic diagram of the medical F-theta optical lens of the utility model laser.As shown, most
For the big curvature of field within 0.3mm, distortion is respectively less than 0.01%.
Fig. 5 is the MTF curve schematic diagram of the medical F-theta optical lens of the utility model laser.As shown, 1550nm
Optical transfer function MTF close to diffraction limit.
It is a kind of preferred embodiment of the utility model described in above embodiments, it is noted that practical new for this
For type person of an ordinary skill in the technical field, without departing from the principle of this utility model, if can also make
Dry improvement and modification, these improvement and modification also can be considered the protection scope of the utility model.
Claims (10)
1. a kind of medical F-theta optical lens of laser, which is characterized in that the F-theta optical lens include along incident light
The first lens, the second lens and the third lens that line transmission direction is set gradually, wherein first lens are that concave-convex type is negative saturating
Mirror, second lens are concave-convex type positive lens, and the third lens are biconvex positive lens, the first lens and the third lens
Light incident surface and light-emitting face bend towards light transmission direction；2 ω=50 ° of field angle of the F-theta optical lens, entrance pupil
Diameter is not more than 6mm, scanning range 51mm × 51mm.
2. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that each lens
Focal length meets with the system focal length of the F-theta optical lens respectively:
- 0.7 < f1/f < -0.5
0.7 < f2/f < 0.9
1.0 < f3/f < 1.1
Wherein, f1 is the focal length of first lens, and f2 is the focal length of second lens, and f3 is the coke of the third lens
Away from f is the system focal length of the F-theta optical lens.
3. the medical F-theta optical lens of a kind of laser according to claim 2, which is characterized in that each lens
System focal length of the focal length respectively with the F-theta optical lens meets f1/f=-0.572；F2/f=0.737；F3/f=
1.077。
4. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that first lens
Including first surface and the second curved surface, wherein the radius of curvature of the first surface is -19.7mm, the song of second curved surface
Rate radius is -112.15mm；The center thickness of first lens is 2.1mm.
5. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that second lens
Including third curved surface and the 4th curved surface, wherein the radius of curvature of the third curved surface is -72.6mm, the song of the 4th curved surface
Rate radius is -30.22mm；The center thickness of second lens is 7.48mm.
6. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that the third lens
Including the 5th curved surface and the 6th curved surface, wherein the radius of curvature of the 5th curved surface is 1940.88mm, the 6th curved surface
Radius of curvature is -72.72mm；The center thickness of the third lens is 9.54mm.
7. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that first lens
Material be crown glass, first index of refraction in lens be 1.52；The material of second lens is attached most importance to lanthanum flint glass, described
Second index of refraction in lens is 1.80；The material of the third lens is attached most importance to lanthanum flint glass, and the third lens refractive index is
1.80。
8. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that first lens
With at a distance from laser scanning galvanometer between 16mm~24mm.
9. the medical F-theta optical lens of a kind of laser according to claim 1, which is characterized in that first lens
It is 1.25mm with spacing of second lens on optical axis；Second lens and spacing of the third lens on optical axis
For 1.30mm.
10. according to any medical F-theta optical lens of laser of claim 1-9, which is characterized in that the wave of the laser
The laser of a length of 1550nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274483.4U CN208636554U (en) | 2018-08-08 | 2018-08-08 | A kind of medical F-theta optical lens of laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274483.4U CN208636554U (en) | 2018-08-08 | 2018-08-08 | A kind of medical F-theta optical lens of laser |
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| Publication Number | Publication Date |
|---|---|
| CN208636554U true CN208636554U (en) | 2019-03-22 |
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ID=65739949
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821274483.4U Active CN208636554U (en) | 2018-08-08 | 2018-08-08 | A kind of medical F-theta optical lens of laser |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717226A (en) * | 2018-08-08 | 2018-10-30 | 深圳市吉斯迪科技有限公司 | A kind of medical F-theta optical lens of laser |
| CN114326055A (en) * | 2021-12-30 | 2022-04-12 | 深圳市韵腾激光科技有限公司 | Infrared field lens with large scanning angle |
-
2018
- 2018-08-08 CN CN201821274483.4U patent/CN208636554U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108717226A (en) * | 2018-08-08 | 2018-10-30 | 深圳市吉斯迪科技有限公司 | A kind of medical F-theta optical lens of laser |
| CN108717226B (en) * | 2018-08-08 | 2024-07-26 | 深圳市吉斯迪科技有限公司 | Laser medical f-theta optical lens |
| CN114326055A (en) * | 2021-12-30 | 2022-04-12 | 深圳市韵腾激光科技有限公司 | Infrared field lens with large scanning angle |
| CN114326055B (en) * | 2021-12-30 | 2024-01-12 | 深圳市韵腾激光科技有限公司 | Infrared field lens with large scanning angle |
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