WO2016082171A1 - F-θ型光刻镜头 - Google Patents
F-θ型光刻镜头 Download PDFInfo
- Publication number
- WO2016082171A1 WO2016082171A1 PCT/CN2014/092428 CN2014092428W WO2016082171A1 WO 2016082171 A1 WO2016082171 A1 WO 2016082171A1 CN 2014092428 W CN2014092428 W CN 2014092428W WO 2016082171 A1 WO2016082171 A1 WO 2016082171A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- refractive index
- type lithography
- abbe number
- curvature
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/0005—Optical objectives specially designed for the purposes specified below having F-Theta characteristic
-
- 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
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0035—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having three lenses
-
- 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
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/359—Working by laser beam, e.g. welding, cutting or boring for surface treatment by providing a line or line pattern, e.g. a dotted break initiation line
Definitions
- the present invention relates to the field of optics, and in particular to an F- ⁇ type lithography lens.
- An F- ⁇ type lithography lens comprising a first lens, a second lens, a third lens and a fourth lens disposed coaxially along a transmission direction of incident light rays; wherein the first lens is a meniscus lens, and the second lens is a meniscus lens, the third lens is a plano-convex lens, the fourth lens is a planar lens; the first lens includes a first surface and a second surface, the second lens includes a third surface and a fourth surface, and the third lens includes a fifth surface and In the sixth surface, the fourth lens includes a seventh surface and an eighth surface; the first surface to the eighth surface are sequentially arranged along the transmission direction of the incident light; the first to eighth surfaces have a radius of curvature of: -29 mm, - 88mm, -56mm, -36mm, ⁇ , -116mm, ⁇ , ⁇ ; the center thickness of the first lens to the fourth lens are: 3mm, 6mm, 6mm, 3mm.
- the ratio of the refractive index to the Abbe number of the first lens is 1.50/62
- the ratio of the refractive index to the Abbe number of the second lens is 1.80/25
- the refractive index of the third lens and Abbe The ratio of the number is 1.80/25
- the ratio of the refractive index of the fourth lens to the Abbe number is 1.50/62.
- the distance between the second surface and the third surface is 2 mm
- the distance between the fourth surface and the fifth surface is 0.2 mm
- the distance between the sixth surface and the seventh surface is 2. Mm.
- the radius of curvature, the center thickness, and the pitch have a tolerance range of 5%.
- the F- ⁇ type lithography lens adopts the F- ⁇ structure lens, which not only has high quality of the engraved line, but also ensures that the engraved line is “thin and thin” and “deep”, and the engraving speed is fast, and the efficiency is higher than that of the conventional lithography lens.
- FIG. 1 is a schematic structural view of an F- ⁇ type lithography lens according to an embodiment
- Figure 2 shows the pitch of the components of the F- ⁇ type lithography lens shown in Figure 1;
- FIG. 3 is a beamlet aberration diagram of an F- ⁇ type lithography lens according to an embodiment
- FIG. 4 is a geometric aberration diagram of an F- ⁇ type lithography lens of an embodiment
- Fig. 5 is a graph showing a modulation transfer function of an F- ⁇ type lithography lens of an embodiment.
- Fig. 1 is a schematic view showing the structure of an F- ⁇ type lithography lens according to an embodiment, and for convenience of explanation, only parts related to the present embodiment are shown.
- an F- ⁇ type lithography lens of an embodiment includes a first lens L1, a second lens L2, a third lens L3, and a fourth lens L4 which are disposed coaxially in the transmission direction of incident light.
- the negative sign indicates that the light propagates from left to right, with the intersection of the spherical surface and the main optical axis as the standard, and the spherical center of the sphere is left at the point, the radius of curvature is negative, and vice versa.
- the center of the sphere is right at this point, and the radius of curvature is positive, the same applies hereinafter.
- the first lens L1 is a meniscus lens including a first surface S1 and a second surface S2.
- the first surface S1 is convex toward the image side and has a radius of curvature of -29 mm; the second surface S2 is also convex toward the image side, and has a radius of curvature of -88 mm.
- the center thickness d1 of the first lens L1 i.e., the thickness of the first lens L1 on the optical axis
- the ratio of the refractive index of the first lens L1 to the Abbe number is 1.50/62.
- the parameters of the first lens L1 described above are not uniquely selected, and each has a tolerance range of 5%, that is, each parameter is allowed to vary within ⁇ 5%.
- the second lens L2 is a meniscus lens including a third surface S3 and a fourth surface S4.
- the third surface S3 is convex toward the image side, and has a radius of curvature of -56 mm
- the fourth surface S4 is also convex toward the image side, and has a radius of curvature of -36 mm.
- the center thickness d3 of the second lens L2 is 6 mm.
- the ratio of the refractive index of the second lens L2 to the Abbe number is 1.80/25.
- the tolerance of each parameter of the second lens L2 described above is 5%.
- the third lens L3 is a plano-convex lens including a fifth surface S5 and a sixth surface S6.
- the fifth surface S5 is a plane having a radius of curvature of ⁇ , that is, infinity; the sixth surface S6 is convex toward the image side, and has a radius of curvature of -116 mm.
- the center thickness d5 of the third lens L3 is 6 mm.
- the ratio of the refractive index of the third lens L3 to the Abbe number is 1.80/25.
- the tolerance of each parameter of the third lens L3 described above is 5%.
- the fourth lens L4 is a planar lens for protecting the lens.
- the fourth lens L4 includes a seventh surface S7 and an eighth surface S8.
- the seventh surface S7 and the eighth surface S8 are both planes, and the radius of curvature is ⁇ .
- the center thickness d7 of the fourth lens L4 is 3 mm.
- the ratio of the refractive index of the fourth lens to the Abbe number is 1.50/62.
- the tolerance of each parameter of the fourth lens L4 described above is 5%.
- the first surface S1 to the eighth surface S8 are sequentially arranged in the transmission direction of the incident light.
- the distance d2 between the exit surface (the second surface S2) of the first lens L1 and the incident surface (the third surface S3) of the second lens L2 on the optical axis is 2 mm, and the tolerance of the pitch d2 is 5 %.
- the distance d4 between the exit surface of the second lens L2 (the fourth surface S4) and the incident surface of the third lens L3 (the fifth surface S5) on the optical axis is 0.2 mm, and the tolerance of the pitch d4 is 5%.
- the distance d6 between the exit surface of the third lens L3 (the sixth surface S6) and the incident surface of the fourth lens L4 (the seventh surface S7) on the optical axis is 2 mm, and the tolerance of the pitch d6 is 5%.
- the F- ⁇ type lithography lens has a focal length f of 160 mm, an outer diameter ⁇ of 7 mm, a marking range A of 100*100 mm, and an operating wavelength ⁇ of 1064 nm.
- 3-5 respectively show a beamlet aberration diagram, a geometric aberration diagram, and a modulation transfer function graph (transfer function MTF diagram) of an F- ⁇ type lithography lens of an embodiment.
- FIG. 3A and 3B are respectively a field curvature characteristic curve and a distortion characteristic diagram of the F- ⁇ type lithography lens, as shown in FIG. 3A and FIG. 3B, the field curvature and distortion of the F- ⁇ type lithography lens are both shown. The level of theoretical value has been reached.
- the size of the circle of the entire image plane is within 6 ⁇ m, and the desired value has been reached.
- the F- ⁇ type lithography lens of the present invention can perform high-quality reticle work, and the scribe line speed is faster and the efficiency is higher than that of the conventional lithography lens.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Lenses (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
Claims (4)
- 一种F-θ型光刻镜头,其特征在于,包括沿入射光线的传输方向共轴设置的第一透镜、第二透镜、第三透镜和第四透镜;其中所述第一透镜为弯月透镜,所述第二透镜为弯月透镜,所述第三透镜为平凸透镜,所述第四透镜为平面透镜;所述第一透镜包括第一面和第二面,所述第二透镜包括第三面和第四面,所述第三透镜包括第五面和第六面,所述第四透镜包括第七面和第八面;所述第一面至第八面沿入射光线的传输方向依次排布;所述第一面至所述第八面的曲率半径依次为:-29mm,-88mm,-56mm,-36mm,∞,-116mm,∞,∞;所述第一透镜至所述第四透镜的中心厚度依次为:3mm,6mm,6mm,3mm。
- 根据权利要求1所述的F-θ型光刻镜头,其特征在于,所述第一透镜的折射率与阿贝数的比例为1.50/62,所述第二透镜的折射率与阿贝数的比例为1.80/25,所述第三透镜的折射率与阿贝数的比例为1.80/25,所述第四透镜的折射率与阿贝数的比例为1.50/62。
- 根据权利要求1所述的F-θ型光刻镜头,其特征在于,所述第二面与所述第三面的间距为2mm,所述第四面与所述第五面的间距为0.2mm,所述第六面与所述第七面的间距为2 mm。
- 根据权利要求1-3中任意一项所述的F-θ型光刻镜头,其特征在于,所述曲率半径、所述中心厚度、所述折射率与阿贝数的比例以及所述间距的公差范围均为5%。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2014/092428 WO2016082171A1 (zh) | 2014-11-28 | 2014-11-28 | F-θ型光刻镜头 |
CN201480080209.1A CN106471413B (zh) | 2014-11-28 | 2014-11-28 | F-θ型光刻镜头 |
JP2017518217A JP6409130B2 (ja) | 2014-11-28 | 2014-11-28 | F−θ型エッチング用レンズ |
US15/518,076 US10162151B2 (en) | 2014-11-28 | 2014-11-28 | F-theta photolithographic lenses |
DE112014007217.6T DE112014007217B4 (de) | 2014-11-28 | 2014-11-28 | Fotolithografische f-theta-linsen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2014/092428 WO2016082171A1 (zh) | 2014-11-28 | 2014-11-28 | F-θ型光刻镜头 |
Publications (1)
Publication Number | Publication Date |
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WO2016082171A1 true WO2016082171A1 (zh) | 2016-06-02 |
Family
ID=56073371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2014/092428 WO2016082171A1 (zh) | 2014-11-28 | 2014-11-28 | F-θ型光刻镜头 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10162151B2 (zh) |
JP (1) | JP6409130B2 (zh) |
CN (1) | CN106471413B (zh) |
DE (1) | DE112014007217B4 (zh) |
WO (1) | WO2016082171A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108169883A (zh) * | 2017-12-27 | 2018-06-15 | 大族激光科技产业集团股份有限公司 | 一种用于大范围清洗的激光镜头及激光*** |
Citations (5)
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CN2585256Y (zh) * | 2002-12-18 | 2003-11-05 | 上海市激光技术研究所 | 二个孔径光阑置于前端的fθ物镜 |
CN101369047A (zh) * | 2008-04-28 | 2009-02-18 | 深圳市大族激光科技股份有限公司 | 光学镜头 |
CN101881875A (zh) * | 2010-06-22 | 2010-11-10 | 深圳市大族激光科技股份有限公司 | f-theta光学镜头 |
CN203025408U (zh) * | 2012-03-21 | 2013-06-26 | 业纳光学***有限公司 | F-θ物镜IV |
CN203275743U (zh) * | 2013-03-22 | 2013-11-06 | 伊欧激光科技(苏州)有限公司 | 一种激光打标用F-θ镜片组 |
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JPS54126051A (en) * | 1978-03-23 | 1979-09-29 | Ricoh Co Ltd | Anamorphic f lens system |
JPH08211285A (ja) * | 1995-02-02 | 1996-08-20 | Minolta Co Ltd | 走査レンズ |
US5835280A (en) * | 1997-04-22 | 1998-11-10 | Eastman Kodak Company | F-θ lens |
JP2001147391A (ja) * | 1999-11-22 | 2001-05-29 | Asahi Optical Co Ltd | 走査光学系 |
CN100549748C (zh) * | 2007-01-30 | 2009-10-14 | 深圳市大族激光科技股份有限公司 | F-theta光学镜头 |
US9739984B2 (en) * | 2012-10-31 | 2017-08-22 | Han's Laser Technology Industry Group Co., Ltd. | F-theta lens and laser processing device for far-infrared laser processing |
DE112014007214B4 (de) * | 2014-11-28 | 2019-04-11 | Han's Laser Technology Industry Group Co., Ltd. | Optische linsen zur laserbeschriftung |
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2014
- 2014-11-28 CN CN201480080209.1A patent/CN106471413B/zh active Active
- 2014-11-28 JP JP2017518217A patent/JP6409130B2/ja active Active
- 2014-11-28 WO PCT/CN2014/092428 patent/WO2016082171A1/zh active Application Filing
- 2014-11-28 DE DE112014007217.6T patent/DE112014007217B4/de active Active
- 2014-11-28 US US15/518,076 patent/US10162151B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN2585256Y (zh) * | 2002-12-18 | 2003-11-05 | 上海市激光技术研究所 | 二个孔径光阑置于前端的fθ物镜 |
CN101369047A (zh) * | 2008-04-28 | 2009-02-18 | 深圳市大族激光科技股份有限公司 | 光学镜头 |
CN101881875A (zh) * | 2010-06-22 | 2010-11-10 | 深圳市大族激光科技股份有限公司 | f-theta光学镜头 |
CN203025408U (zh) * | 2012-03-21 | 2013-06-26 | 业纳光学***有限公司 | F-θ物镜IV |
CN203275743U (zh) * | 2013-03-22 | 2013-11-06 | 伊欧激光科技(苏州)有限公司 | 一种激光打标用F-θ镜片组 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108169883A (zh) * | 2017-12-27 | 2018-06-15 | 大族激光科技产业集团股份有限公司 | 一种用于大范围清洗的激光镜头及激光*** |
Also Published As
Publication number | Publication date |
---|---|
JP2018501500A (ja) | 2018-01-18 |
CN106471413A (zh) | 2017-03-01 |
DE112014007217B4 (de) | 2019-01-31 |
JP6409130B2 (ja) | 2018-10-17 |
CN106471413B (zh) | 2019-07-05 |
US20180267272A1 (en) | 2018-09-20 |
DE112014007217T5 (de) | 2017-08-24 |
US10162151B2 (en) | 2018-12-25 |
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