CN110275282A - A kind of new pattern laser cutting camera lens - Google Patents
A kind of new pattern laser cutting camera lens Download PDFInfo
- Publication number
- CN110275282A CN110275282A CN201910631084.1A CN201910631084A CN110275282A CN 110275282 A CN110275282 A CN 110275282A CN 201910631084 A CN201910631084 A CN 201910631084A CN 110275282 A CN110275282 A CN 110275282A
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- lens
- curved surface
- curvature
- new pattern
- radius
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- 238000003698 laser cutting Methods 0.000 title description 10
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 25
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000005350 fused silica glass Substances 0.000 claims description 3
- 238000009738 saturating Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 13
- 239000011521 glass Substances 0.000 abstract description 6
- 239000000919 ceramic Substances 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
Abstract
The invention discloses a kind of new pattern lasers to cut camera lens, including axial cone mirror, the first lens, the second lens, the third lens, the 4th lens and the 5th lens set gradually along light incident direction, wherein, the first lens, the second lens, the third lens, the 4th lens and the 5th lens are positive lens.New pattern laser of the present invention cuts camera lens, propagation principle based on bessel beam, meet the accurate cutting, it can be achieved that fragile materials such as glass, ceramics, sapphires while realizing small focal beam spot and longer depth of focus, can also remove ink, PVD of material surface etc..
Description
Technical field
The present invention relates to a kind of new pattern lasers to cut camera lens, belongs to cutting camera lens field.
Background technique
Laser cutting and drilling are the laser beam heats workpiece using high-energy density, rise rapidly temperature, very
Reach the boiling point of material in the short time, material is begun vaporization, and forms steam, the spouting velocity of these steams is very big, in steam
While ejection, notch is formed on material.Laser cutting is contactless cutting, since there are cut quality for laser cutting
Well, the advantages such as cutting efficiency is high, cutting speed is fast, adaptability is good, post processing cost is low, laser cutting and drilling are in industrial production
It plays an increasingly important role in processing.
With the development of society, precision, the high efficiency to material processing propose higher demand.And laser machine skill
The existing a great problem of art: system can not meet simultaneously with lesser focal beam spot and longer depth of focus.Existing cutting camera lens
The best effect of focal beam spot range is at 10 μm or so, and depth of focus is in 0.5mm or so.
Summary of the invention
In order to solve in laser processing, existing camera lens can not have lacking for small focal beam spot and longer depth of focus simultaneously
It falls into, the present invention provides a kind of new pattern laser cutting camera lens.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
A kind of new pattern laser cutting camera lens, including axial cone mirror, the first lens, second set gradually along light incident direction
Lens, the third lens, the 4th lens and the 5th lens, wherein the first lens, the second lens, the third lens, the 4th lens and
Five lens are positive lens.
The present invention is based on the new pattern laser of Bezier' s theory process camera lens, solve existing camera lens can not have simultaneously it is small
The defect of focal beam spot and longer depth of focus.New pattern laser cutting camera lens of the invention is used in YAG laser or ultraviolet 355nm
Laser, laser light incident spot diameter are less than 10mm, and it is 1.5mm, laser focal beam spot size that depth of focus, which may be implemented, in the present invention
About 1 μm, the accurate cutting to materials such as glass, ceramics may be implemented.
In order to meet the requirement of high power laser light cutting, axial cone mirror, the first lens, the second lens, the third lens, the 4th are thoroughly
Mirror and the 5th lens are all made of fused silica material.
In order to realize the accurate cutting of small focal beam spot, the apex angle range of axial cone mirror is 170 °~178 °, and the first lens
And second lens combined focal length range between 100mm~150mm, the combination of the third lens, the 4th lens and the 5th lens
Focal range is between 10mm~25mm.
In order to realize the accurate cutting of small focal beam spot, further preferably, the center thickness of axicon lens is 6 ± 0.2mm；First
The center thickness of lens is 4 ± 0.2mm；The center thickness of second lens is 4 ± 0.2mm；The center thickness of the third lens is 1.7
±0.2mm；The center thickness of 4th lens is 1.7 ± 0.2mm；The center thickness of 5th lens is 1.5 ± 0.2mm.
In order to meet the requirement of high power laser light cutting, further preferably, the center spacing of axicon lens and the first lens is
The center spacing of 126.7 ± 1mm, the first lens and the second lens is 56.1 ± 1mm, between the second lens and the center of the third lens
Away from for 70.9 ± 1mm, the center spacing of the third lens and the 4th lens is 9.8 ± 0.5mm, in the 4th lens and the 5th lens
In the heart away from for 0.3 ± 0.01mm.
In order to further take into account small focal beam spot and longer depth of focus, it is preferable that along light incident direction, the first lens
Two sides is followed successively by first surface and the second curved surface；The two sides of second lens is followed successively by third curved surface and the 4th curved surface, the third lens
Two sides be followed successively by the 5th curved surface and the 6th curved surface, the two sides of the 4th lens is followed successively by the 7th curved surface and the 8th curved surface, and the 5th thoroughly
The two sides of mirror is followed successively by zigzag face and the tenth curved surface；The radius of curvature of first surface is 157.49 ± 0.5mm, the second curved surface
Radius of curvature is -157.49 ± 0.5mm；The radius of curvature of third curved surface is 72.518 ± 0.5mm, the radius of curvature of the 4th curved surface
For infinity；The radius of curvature of 5th curved surface is -122.58 ± 0.5mm, the radius of curvature of the 6th curved surface is -18.23 ±
0.5mm；The radius of curvature of 7th curved surface is 17.65 ± 0.5mm, and the radius of curvature of the 8th curved surface is -1250 ± 0.5mm；9th
The radius of curvature of curved surface is 9.6 ± 0.5mm, and the radius of curvature of the tenth curved surface is 24.156 ± 0.5mm.
In order to guarantee cutting accuracy, it is preferable that axial cone mirror, the first lens, the second lens, the third lens, the 4th lens and
Five lens are installed in lens barrel, and for the material that lens barrel uses for aluminium, lens barrel shape is long straight tube, and the center of lens barrel is less than normal in 1 '.
Further preferably, lens barrel includes the first lens barrel successively to connect along axial direction, the second lens barrel, connecting cylinder and third mirror
Cylinder, axial cone mirror is located in the first lens barrel, and the first lens and the second lens are located at the end at both ends in the second lens barrel, and third is saturating
Mirror, the 4th lens and the 5th lens are respectively positioned in third lens barrel.
In order to further increase the precision and stability of camera lens, axial cone mirror is fixed by the first pressing ring；First lens pass through
Second pressing ring is fixed；Second lens are fixed by third pressing ring；Third lens barrel inner circumferential is equipped in first microscope base in microscope base and second,
The third lens are located in first in microscope base, and the 4th lens and the 5th lens are located in second in microscope base；The third lens pass through the 4th
Pressing ring is fixed, and microscope base is fixed by five pressing rings in first；It is equipped between microscope base in microscope base and second in first and adjusts spacer ring；Second
Interior microscope base adjusts screw by nylon head and fixes；5th lens are fixed by the 6th pressing ring；Between 4th lens and the 5th lens
Equipped with spacer ring.Above-mentioned lens barrel is assembled by four section cylinders point, and is devised adjustment screw in the structure and adjusted spacer ring, is used for
The fine tuning of eyeglass improves the precision of camera lens.
In order to reduce damage, elastic washer is equipped between the first pressing ring and axial cone mirror.
The unmentioned technology of the present invention is referring to the prior art.
New pattern laser of the present invention cuts camera lens, the propagation principle based on bessel beam, realize small focal beam spot and
Meet the accurate cutting, it can be achieved that fragile materials such as glass, ceramics, sapphires while longer depth of focus, can also remove material
Ink, the PVD on surface etc..
Detailed description of the invention
Fig. 1 is the index path that new pattern laser cuts camera lens in the embodiment of the present invention；
Fig. 2 is that new pattern laser cuts energy profile of the camera lens in service band 1.5mm in the embodiment of the present invention；
Fig. 3 is that new pattern laser cuts energy profile of the camera lens at 1.5mm depth of focus in the embodiment of the present invention；
Fig. 4 is the internal structure chart that new pattern laser cuts camera lens in the embodiment of the present invention；
Wherein, 1 is axicon lens, and 2 be the first lens, and 3 be the second lens, and 4 be the third lens, and 5 be the 4th lens, and 6 be the 5th
Lens, 7 be the first pressing ring, and 8 be elastic washer, and 9 be the first lens barrel, and 10 be the second pressing ring, and 11 be the second lens barrel, and 12 be third pressure
Circle, 13 be connecting cylinder, and 14 be the 4th pressing ring, and 15 be the 5th pressing ring, and 16 be microscope base in first, and 17 is adjust spacer ring, and 18 be nylon
Head adjusts screw, and 19 be third lens barrel, and 20 be microscope base in second, and 21 be spacer ring, and 22 be the 6th pressing ring.
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of new pattern laser cuts camera lens as shown in Figure 1:, including set gradually along light incident direction axicon lens, first
Lens, the second lens, the third lens, the 4th lens and the 5th lens, aforementioned five lens are positive lens, and axicon lens and all
Lens all use fused silica material to prepare.
Axicon lens with a thickness of 6mm, and the apex angle of axicon lens is 170 °.Along light incident direction, the two sides of the first lens is successively
For first surface and the second curved surface；The two sides of second lens is followed successively by third curved surface and the 4th curved surface, the two sides of the third lens according to
Secondary is the 5th curved surface and the 6th curved surface, and the two sides of the 4th lens is followed successively by the 7th curved surface and the 8th curved surface, the two sides of the 5th lens
It is followed successively by zigzag face and the tenth curved surface；The radius of curvature of first surface is 157.49mm, the radius of curvature of the second curved surface is-
157.49mm, the center thickness of the first lens are 4mm.The radius of curvature of third curved surface is 72.518mm, the curvature of the 4th curved surface
Radius is Infinity (infinity), and the center thickness of the second lens is 4mm.The radius of curvature of 5th curved surface is -122.58mm,
The radius of curvature of 6th curved surface is -18.23mm, and the center thickness of the third lens is 1.7mm.The radius of curvature of 7th curved surface is
17.65mm, the radius of curvature of the 8th curved surface are -1250mm, and the center thickness of the 4th lens is 1.7mm.The curvature in zigzag face
Radius is 9.6mm, and the radius of curvature of the tenth curved surface is 24.156mm, and the center thickness of the 5th lens is 1.5mm.
The center spacing of axicon lens and the first lens is 126.7mm, and the center spacing of the first lens and the second lens is
The center spacing of 56.1mm, the second lens and the third lens is 70.9mm, and the third lens and the center spacing of the 4th lens are
The center spacing of 9.8mm, the 4th lens and the 5th lens is 0.3mm.
The combined focal length of first lens and the second lens is 101.4mm, the group of the third lens, the 4th lens and the 5th lens
Complex focus is 15.6mm.
For the material that lens barrel uses for aluminium, lens barrel shape is long straight tube, and the center of lens barrel is less than normal in 1 '；As shown in figure 4, lens barrel
Including the first lens barrel, the second lens barrel, connecting cylinder and the third lens barrel successively to connect along axial direction, axial cone mirror is located in the first lens barrel,
First lens and the second lens are located at the end at both ends in the second lens barrel, and the third lens, the 4th lens and the 5th lens are equal
In third lens barrel.Axial cone mirror is fixed by the first pressing ring, and elastic washer is equipped between the first pressing ring and axial cone mirror；First thoroughly
Mirror is fixed by the second pressing ring；Second lens are fixed by third pressing ring；Third lens barrel inner circumferential is equipped with microscope base and second in first
Interior microscope base is equipped in first between microscope base in microscope base and second and adjusts spacer ring, and the third lens are located in first in microscope base, and the 4th thoroughly
Mirror and the 5th lens are located in second in microscope base；The third lens are fixed by the 4th pressing ring, and microscope base is solid by five pressing rings in first
It is fixed；Microscope base adjusts screw by nylon head and fixes in second；5th lens are fixed by the 6th pressing ring；4th lens and the 5th are thoroughly
Spacer ring is equipped between mirror.
Spot diameter of the light that YAG laser comes out after beam expanding lens is 10mm, subsequently into above-mentioned laser cutting mirror
Head will be placed in the 1.5mm depth of focus of camera lens with a thickness of the glass of 1.5mm, and Fig. 2 is section Energy distribution when light passes through glass
Figure, it can be seen that energy when light passes through glass material is gradually decreased with distance, but is able to maintain in the distance of 1.5mm higher
Energy；Fig. 3 is the energy profile at 0.5mm depth of focus, it can be seen that this Energy distribution meets Bessel function distribution, and can
To find out that the region that energy is most concentrated is about 1 μm or so, illustrating that the focal beam spot of system is less about is 1 μm or so.
Claims (10)
1. a kind of new pattern laser cuts camera lens, it is characterised in that: including set gradually along light incident direction axial cone mirror, first
Lens, the second lens, the third lens, the 4th lens and the 5th lens, wherein the first lens, the second lens, the third lens,
Four lens and the 5th lens are positive lens.
2. new pattern laser as described in claim 1 cuts camera lens, it is characterised in that: axial cone mirror, the first lens, the second lens,
The third lens, the 4th lens and the 5th lens are all made of fused silica material.
3. new pattern laser as claimed in claim 1 or 2 cuts camera lens, it is characterised in that: the apex angle range of axial cone mirror is 170 °
~178 °, and the combined focal length range of the first lens and the second lens is between 100mm~150mm, the third lens, the 4th lens
And the 5th lens combined focal length range between 10mm~25mm.
4. new pattern laser as claimed in claim 1 or 2 cuts camera lens, it is characterised in that: the center thickness of axicon lens is 6 ±
0.2mm；The center thickness of first lens is 4 ± 0.2mm；The center thickness of second lens is 4 ± 0.2mm；In the third lens
The heart is with a thickness of 1.7 ± 0.2mm；The center thickness of 4th lens is 1.7 ± 0.2mm；The center thickness of 5th lens be 1.5 ±
0.2mm。
5. new pattern laser as claimed in claim 1 or 2 cuts camera lens, it is characterised in that: between axicon lens and the center of the first lens
Away from for 126.7 ± 1mm, the center spacing of the first lens and the second lens is 56.1 ± 1mm, in the second lens and the third lens
In the heart away from for 70.9 ± 1mm, the center spacing of the third lens and the 4th lens is 9.8 ± 0.5mm, the 4th lens and the 5th lens
Center spacing be 0.3 ± 0.01mm.
6. new pattern laser as claimed in claim 1 or 2 cuts camera lens, it is characterised in that: along light incident direction, the first lens
Two sides be followed successively by first surface and the second curved surface；The two sides of second lens is followed successively by third curved surface and the 4th curved surface, and third is saturating
The two sides of mirror is followed successively by the 5th curved surface and the 6th curved surface, and the two sides of the 4th lens is followed successively by the 7th curved surface and the 8th curved surface, and the 5th
The two sides of lens is followed successively by zigzag face and the tenth curved surface；The radius of curvature of first surface is 157.49 ± 0.5mm, the second curved surface
Radius of curvature be -157.49 ± 0.5mm；The radius of curvature of third curved surface is 72.518 ± 0.5mm, the curvature half of the 4th curved surface
Diameter is infinity；The radius of curvature of 5th curved surface is -122.58 ± 0.5mm, the radius of curvature of the 6th curved surface is -18.23 ±
0.5mm；The radius of curvature of 7th curved surface is 17.65 ± 0.5mm, and the radius of curvature of the 8th curved surface is -1250 ± 0.5mm；9th
The radius of curvature of curved surface is 9.6 ± 0.5mm, and the radius of curvature of the tenth curved surface is 24.156 ± 0.5mm.
7. new pattern laser as claimed in claim 1 or 2 cuts camera lens, it is characterised in that: axial cone mirror, the first lens, second are thoroughly
Mirror, the third lens, the 4th lens and the 5th lens are installed in lens barrel, and for the material that lens barrel uses for aluminium, lens barrel shape is length
Straight tube, the center of lens barrel are less than normal in 1 '.
8. new pattern laser as claimed in claim 7 cuts camera lens, it is characterised in that: lens barrel includes the successively to connect along axial direction
One lens barrel, the second lens barrel, connecting cylinder and third lens barrel, axial cone mirror are located in the first lens barrel, the first lens and the second lens difference
The end at both ends in the second lens barrel, the third lens, the 4th lens and the 5th lens are respectively positioned in third lens barrel.
9. new pattern laser as claimed in claim 8 cuts camera lens, it is characterised in that: axial cone mirror is fixed by the first pressing ring；The
One lens are fixed by the second pressing ring；Second lens are fixed by third pressing ring；Third lens barrel inner circumferential be equipped with first in microscope base and
Microscope base in second is equipped in first between microscope base in microscope base and second and adjusts spacer ring, and the third lens are located in first in microscope base, the
Four lens and the 5th lens are located in second in microscope base；The third lens are fixed by the 4th pressing ring, and microscope base passes through five pressures in first
Circle is fixed；Microscope base adjusts screw by nylon head and fixes in second；5th lens are fixed by the 6th pressing ring；4th lens and
Spacer ring is equipped between five lens.
10. new pattern laser as claimed in claim 9 cuts camera lens, it is characterised in that: be equipped between the first pressing ring and axial cone mirror
Elastic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910631084.1A CN110275282B (en) | 2019-07-12 | 2019-07-12 | Novel laser cutting lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910631084.1A CN110275282B (en) | 2019-07-12 | 2019-07-12 | Novel laser cutting lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110275282A true CN110275282A (en) | 2019-09-24 |
| CN110275282B CN110275282B (en) | 2024-02-09 |
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ID=67964369
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| CN201910631084.1A Active CN110275282B (en) | 2019-07-12 | 2019-07-12 | Novel laser cutting lens |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160061763A (en) * | 2014-11-24 | 2016-06-01 | 주식회사 필옵틱스 | Optical apparus using bessel beam and cutting apparatus thereof |
| CN106029588A (en) * | 2013-12-17 | 2016-10-12 | 康宁股份有限公司 | Laser cutting of ion-exchangeable glass substrates |
| CN109031682A (en) * | 2018-07-10 | 2018-12-18 | 北京润和微光科技有限公司 | The generation system and method for Diode laser, small spot based on diffraction optical element |
| CN109803786A (en) * | 2016-09-30 | 2019-05-24 | 康宁股份有限公司 | The device and method that transparent workpiece is laser machined using non-axis symmetry beam spot |
| CN210243948U (en) * | 2019-07-12 | 2020-04-03 | 南京波长光电科技股份有限公司 | Novel laser cutting camera lens |
-
2019
- 2019-07-12 CN CN201910631084.1A patent/CN110275282B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106029588A (en) * | 2013-12-17 | 2016-10-12 | 康宁股份有限公司 | Laser cutting of ion-exchangeable glass substrates |
| KR20160061763A (en) * | 2014-11-24 | 2016-06-01 | 주식회사 필옵틱스 | Optical apparus using bessel beam and cutting apparatus thereof |
| CN109803786A (en) * | 2016-09-30 | 2019-05-24 | 康宁股份有限公司 | The device and method that transparent workpiece is laser machined using non-axis symmetry beam spot |
| CN109031682A (en) * | 2018-07-10 | 2018-12-18 | 北京润和微光科技有限公司 | The generation system and method for Diode laser, small spot based on diffraction optical element |
| CN210243948U (en) * | 2019-07-12 | 2020-04-03 | 南京波长光电科技股份有限公司 | Novel laser cutting camera lens |
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| CN110275282B (en) | 2024-02-09 |
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