WO2008006460A1 - Vorrichtung zur homogenisierung von licht sowie laservorrichtung zur erzeugung einer linienförmigen intensitätsverteilung in einer arbeitsebene - Google Patents
Vorrichtung zur homogenisierung von licht sowie laservorrichtung zur erzeugung einer linienförmigen intensitätsverteilung in einer arbeitsebene Download PDFInfo
- Publication number
- WO2008006460A1 WO2008006460A1 PCT/EP2007/005626 EP2007005626W WO2008006460A1 WO 2008006460 A1 WO2008006460 A1 WO 2008006460A1 EP 2007005626 W EP2007005626 W EP 2007005626W WO 2008006460 A1 WO2008006460 A1 WO 2008006460A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser
- lenses
- intensity distribution
- light
- lens array
- Prior art date
Links
Classifications
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0043—Inhomogeneous or irregular arrays, e.g. varying shape, size, height
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/005—Arrays characterized by the distribution or form of lenses arranged along a single direction only, e.g. lenticular sheets
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
- G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements
Definitions
- the present invention relates to a device for homogenizing light according to the preamble of claim 1 and to a laser device for producing a linear intensity distribution in a working plane according to the preamble of claim 7.
- Homogenization of light have lens arrays in which a plurality, in particular all of the lenses are different from all other lenses in terms of aperture, focal length and possibly other parameters. By a particular random distribution of these different lenses in the array is a good
- WO 2005/085935 Another device for homogenization is known from WO 2005/085935.
- a plurality of biconvex cylindrical lenses are arranged side by side in a lens array, wherein each of the lenses is the same size and has the same focal length.
- a top hat Such an intensity distribution has, for example, very good homogeneity and very steep flanks.
- the falling flanks may have a defined pitch. This can in Homogenisierern according to the prior art by Defocusing can be achieved. However, the intensity profile generally deteriorates and is difficult to control.
- An application for this purpose are, for example, long, compound lines, as they are to be generated by the laser device mentioned above.
- long laser lines for example greater than 100 mm
- the distance is at least as long as the line is long. In industrial applications, this much space is often not available, especially for line lengths of more than one meter.
- a laser device of the type mentioned is known from US 6,717, 105 B1.
- the laser device described therein comprises a plurality of laser light sources, each associated with an optical means.
- the optical means each form laser beams with a linear intensity distribution from the laser light of the laser light sources, wherein these individual laser beams can be superimposed in a working plane to form a common line-shaped intensity distribution.
- the center distances of the lenses decrease or increase from the inside to the outside.
- the desired radiation characteristic of the homogenizer is realized by a variation of the center distance (pitch), in particular with a simultaneously constant focal length of the individual lenses of the lens array.
- the center distance pitch
- This principle is suitable for one-stage as well as two-stage homogenization, as well as for the use of a monolithic
- the core of the invention is thus a homogenizer, which generates a defined, trapezoidal angular distribution for one or two axes.
- the optical means of the laser device comprise a device according to the invention for homogenization.
- Fig. 1 is a perspective view of an inventive
- FIG. 2a shows a side view of a first embodiment of a device according to the invention for the homogenization of light
- FIG. 2b shows a side view of a second embodiment of a device according to the invention for the homogenization of light
- FIG. 4 shows an intensity distribution which can be achieved with a laser device according to the invention in arbitrary units.
- FIG. 1 The basic principle of a laser device according to the invention is shown in FIG.
- On display are seven laser modules 1 with similar, but not necessarily the same beam profile that illuminate a Optikmod ul.
- seven optical means 2 are included for beam shaping, each generating laser light 3 with an at least partially line-shaped intensity distribution.
- the special feature is that through the use of inventive
- the laser modules 1, which illuminate that Optikmod ul, can be easily replaced due to the vast independence of the optical module from the input beam.
- Fig. 2a shows a device according to the invention for
- the lenses 6 are formed as cylindrical lenses with cylinder axes in the Y direction. It can be clearly seen that the pitch P 1 , P 2 of the lenses 6 in the center of the lens array 5 is smaller than at the edge. This is achieved in that the width of the lenses 6 in the X direction (see coordinate system shown), in which they are arranged side by side, increases from the center outwards. Alternatively, there is a possibility that the center distance decreases from the center to the outside.
- the focal length of the lenses 6 is the same for all the lenses 6.
- the focal length f ⁇ of the rear refractive surfaces in the Z direction may correspond to the thickness of the lenses 6 in the Z direction or in the propagating direction of the homogenizing light.
- Fig. 2b shows a two-stage device according to the invention for the homogenization of light.
- This comprises two lens arrays 7, 8, each having a plurality of lenses 9, 1 0. Again, take the center distance P 1 , P 2 of the lenses 7, 8 from the center outwards. Alternatively, there is also the possibility that the center distance decreases from the center to the outside.
- the focal length of the lenses for all lenses 9 on the first lens array 7 and / or for all lenses 10 on the second lens array 8 is the same.
- the focal length fio of the Z-direction rear refractive surfaces may correspond to the distance of the lenses 9 to the lenses 10 in the Z direction.
- a plurality of cylindrical lenses with cylinder axes can then be arranged in the X direction, for example on the mutually facing sides of the lens arrays 7, 8 according to FIG. 2b.
- These cylindrical lenses can be a corresponding from the
- FIG. 3 shows that with such a device for homogenization, an intensity profile can be generated which has a central region of constant intensity and two edge regions with linearly decreasing intensity.
- a defined, trapezoidal angular distribution for one or two axes can be generated.
- This principle is suitable for one-stage as well as for a two-stage homogenization, as well as for the use of a monolithic homogenizer.
- FIG. 4 shows a simulation result for the laser device. Two lines of the laser light 3 with trapezoidal intensity distribution, each 190 mm in length, are combined to form a linear intensity distribution 4. The homogeneity thereby achieved is about 96% or about + 1-2%.
- flanks with constant slope of the intensity distribution of the individual lines of the laser light 3 can thus be superimposed optimally in the working plane to a linear intensity distribution 4.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07764852A EP2054751A1 (de) | 2006-07-13 | 2007-06-26 | Vorrichtung zur homogenisierung von licht sowie laservorrichtung zur erzeugung einer linienförmigen intensitätsverteilung in einer arbeitsebene |
CN200780026566.XA CN101490597B (zh) | 2006-07-13 | 2007-06-26 | 使光均匀化的装置和用于在工作面内产生线性光强分布的激光装置 |
JP2009518741A JP2009543143A (ja) | 2006-07-13 | 2007-06-26 | 光を均質化するための装置、および作業面において線状強度分布を発生させるためのレーザ装置 |
US12/373,432 US8395844B2 (en) | 2006-07-13 | 2007-06-26 | Apparatus for homogenizing light and laser apparatus for producing a linear intensity distribution in a work plane |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006032657 | 2006-07-13 | ||
DE102006032657.1 | 2006-07-13 | ||
DE102006033069.2 | 2006-07-14 | ||
DE102006033069 | 2006-07-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008006460A1 true WO2008006460A1 (de) | 2008-01-17 |
Family
ID=38521011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/005626 WO2008006460A1 (de) | 2006-07-13 | 2007-06-26 | Vorrichtung zur homogenisierung von licht sowie laservorrichtung zur erzeugung einer linienförmigen intensitätsverteilung in einer arbeitsebene |
Country Status (5)
Country | Link |
---|---|
US (1) | US8395844B2 (de) |
EP (1) | EP2054751A1 (de) |
JP (1) | JP2009543143A (de) |
KR (1) | KR20090029748A (de) |
WO (1) | WO2008006460A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009021251A1 (de) | 2009-05-14 | 2010-11-18 | Limo Patentverwaltung Gmbh & Co. Kg | Vorrichtung zur Formung von Laserstrahlung sowie Laservorrichtung mit einer derartigen Vorrichtung |
WO2014044863A1 (de) | 2012-09-24 | 2014-03-27 | Limo Patentverwaltung Gmbh & Co. Kg | Vorrichtung zur erzeugung einer linienförmigen intensitätsverteilung einer laserstrahlung in einer arbeitsebene |
US20180195693A1 (en) * | 2015-05-15 | 2018-07-12 | Sony Corporation | Light source device, illumination apparatus, and projector |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8946594B2 (en) | 2011-11-04 | 2015-02-03 | Applied Materials, Inc. | Optical design for line generation using microlens array |
JP6175761B2 (ja) * | 2012-12-03 | 2017-08-09 | セイコーエプソン株式会社 | 電気光学装置及び電子機器 |
JP5884743B2 (ja) * | 2013-01-30 | 2016-03-15 | ソニー株式会社 | 照明装置および表示装置 |
CN111505749B (zh) * | 2019-01-31 | 2023-08-15 | 日亚化学工业株式会社 | 透镜阵列以及照明光学装置 |
JP7311746B2 (ja) * | 2019-01-31 | 2023-07-20 | 日亜化学工業株式会社 | レンズアレイ及び照明光学装置 |
Citations (4)
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US6212012B1 (en) * | 1997-03-10 | 2001-04-03 | Semiconductor Energy Laboratory Co., Ltd. | Laser optical apparatus |
US20040130790A1 (en) * | 2002-09-20 | 2004-07-08 | Sales Tasso R. M. | Random microlens array for optical beam shaping and homogenization |
US20040156130A1 (en) * | 2002-12-31 | 2004-08-12 | Powell Karlton David | Homogenizing optical sheet, method of manufacture, and illumination system |
WO2005085935A1 (de) * | 2004-03-06 | 2005-09-15 | Hentze-Lissotschenko Gmbh & Co. Kg | Vorrichtung zur homogenisierung von licht sowie anordnung zur beleuchtung oder fokussierung mit einer derartigen vorrichtung |
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JPH0424712A (ja) * | 1990-05-15 | 1992-01-28 | Matsushita Electric Ind Co Ltd | 2次元レンズアレイおよび神経ネットワーク回路 |
JP2788791B2 (ja) * | 1991-01-08 | 1998-08-20 | 三菱電機株式会社 | フライアイレンズ装置およびそのフライアイレンズ装置を含む照明装置 |
JP2974099B2 (ja) * | 1992-12-14 | 1999-11-08 | 株式会社日立製作所 | 透過型液晶パネル及び投写形液晶表示装置 |
JP2001056435A (ja) | 1999-08-18 | 2001-02-27 | Mitsubishi Electric Corp | 投写型表示装置 |
JP2002141301A (ja) * | 2000-11-02 | 2002-05-17 | Mitsubishi Electric Corp | レーザアニーリング用光学系とこれを用いたレーザアニーリング装置 |
DE10136611C1 (de) | 2001-07-23 | 2002-11-21 | Jenoptik Laserdiode Gmbh | Optische Anordnung zur Formung und Homogenisierung eines von einer Laserdiodenanordnung ausgehenden Laserstrahls |
US6750423B2 (en) * | 2001-10-25 | 2004-06-15 | Semiconductor Energy Laboratory Co., Ltd. | Laser irradiation method, laser irradiation apparatus, and method of manufacturing a semiconductor device |
TWI289896B (en) * | 2001-11-09 | 2007-11-11 | Semiconductor Energy Lab | Laser irradiation apparatus, laser irradiation method, and method of manufacturing a semiconductor device |
US7113527B2 (en) * | 2001-12-21 | 2006-09-26 | Semiconductor Energy Laboratory Co., Ltd. | Method and apparatus for laser irradiation and manufacturing method of semiconductor device |
US6984573B2 (en) * | 2002-06-14 | 2006-01-10 | Semiconductor Energy Laboratory Co., Ltd. | Laser irradiation method and apparatus |
EP1650711B1 (de) | 2003-07-18 | 2015-03-04 | Canon Kabushiki Kaisha | Bildverarbeitungseinrichtung, abbildungseinrichtung, bildverarbeitungsverfahren |
WO2005069777A2 (en) * | 2004-01-08 | 2005-08-04 | Tang Yin S | Microlens arrays |
US6950239B2 (en) * | 2004-01-08 | 2005-09-27 | Tang Yin S | Method for making micro-lens array |
US7422988B2 (en) * | 2004-11-12 | 2008-09-09 | Applied Materials, Inc. | Rapid detection of imminent failure in laser thermal processing of a substrate |
DE112005003207B4 (de) | 2004-12-22 | 2014-10-16 | Carl Zeiss Laser Optics Gmbh | Optisches Beleuchtungssystem zum Erzeugen eines Linienstrahls |
JP4665630B2 (ja) * | 2005-07-05 | 2011-04-06 | 株式会社日立製作所 | 投射型映像表示装置およびオプチカルインテグレータ |
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2007
- 2007-06-26 JP JP2009518741A patent/JP2009543143A/ja active Pending
- 2007-06-26 KR KR1020087031886A patent/KR20090029748A/ko not_active Application Discontinuation
- 2007-06-26 US US12/373,432 patent/US8395844B2/en not_active Expired - Fee Related
- 2007-06-26 WO PCT/EP2007/005626 patent/WO2008006460A1/de active Application Filing
- 2007-06-26 EP EP07764852A patent/EP2054751A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US6212012B1 (en) * | 1997-03-10 | 2001-04-03 | Semiconductor Energy Laboratory Co., Ltd. | Laser optical apparatus |
US20040130790A1 (en) * | 2002-09-20 | 2004-07-08 | Sales Tasso R. M. | Random microlens array for optical beam shaping and homogenization |
US20040156130A1 (en) * | 2002-12-31 | 2004-08-12 | Powell Karlton David | Homogenizing optical sheet, method of manufacture, and illumination system |
WO2005085935A1 (de) * | 2004-03-06 | 2005-09-15 | Hentze-Lissotschenko Gmbh & Co. Kg | Vorrichtung zur homogenisierung von licht sowie anordnung zur beleuchtung oder fokussierung mit einer derartigen vorrichtung |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009021251A1 (de) | 2009-05-14 | 2010-11-18 | Limo Patentverwaltung Gmbh & Co. Kg | Vorrichtung zur Formung von Laserstrahlung sowie Laservorrichtung mit einer derartigen Vorrichtung |
WO2010130415A1 (de) | 2009-05-14 | 2010-11-18 | Limo Patentverwaltung Gmbh & Co. Kg | Vorrichtung zur formung von laserstrahlung sowie laservorrichtung mit einer derartigen vorrichtung |
US8749888B2 (en) | 2009-05-14 | 2014-06-10 | Limo Patentverwaltung Gmbh & Co. Kg | Arrangement for producing laser radiation, and laser device comprising such an arrangement |
WO2014044863A1 (de) | 2012-09-24 | 2014-03-27 | Limo Patentverwaltung Gmbh & Co. Kg | Vorrichtung zur erzeugung einer linienförmigen intensitätsverteilung einer laserstrahlung in einer arbeitsebene |
US20180195693A1 (en) * | 2015-05-15 | 2018-07-12 | Sony Corporation | Light source device, illumination apparatus, and projector |
Also Published As
Publication number | Publication date |
---|---|
US20110051253A1 (en) | 2011-03-03 |
JP2009543143A (ja) | 2009-12-03 |
US8395844B2 (en) | 2013-03-12 |
EP2054751A1 (de) | 2009-05-06 |
KR20090029748A (ko) | 2009-03-23 |
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