JP5702045B2 - 斜めのビュー角度をもつ検査システム - Google Patents
斜めのビュー角度をもつ検査システム Download PDFInfo
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- JP5702045B2 JP5702045B2 JP2008181750A JP2008181750A JP5702045B2 JP 5702045 B2 JP5702045 B2 JP 5702045B2 JP 2008181750 A JP2008181750 A JP 2008181750A JP 2008181750 A JP2008181750 A JP 2008181750A JP 5702045 B2 JP5702045 B2 JP 5702045B2
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N2021/1765—Method using an image detector and processing of image signal
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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- G01N2021/4704—Angular selective
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- G01N2021/4735—Solid samples, e.g. paper, glass
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4788—Diffraction
- G01N2021/479—Speckle
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- G01N2021/4792—Polarisation of scatter light
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- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8822—Dark field detection
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
- G01N2021/8845—Multiple wavelengths of illumination or detection
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- G01N21/94—Investigating contamination, e.g. dust
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/069—Supply of sources
- G01N2201/0696—Pulsed
- G01N2201/0697—Pulsed lasers
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- H—ELECTRICITY
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
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Description
[0001]本出願は、同日に出願された「Dark FieldInspection System」及び「Illumination System for Optical Inspection」と題する他の2つの米国特許出願に関連している。これら関連出願は、両方とも、参考としてここに援用する。
[0014]上記初期像の傾斜を補正するように結合されて、実質的に無歪の中間像を形成する傾斜補正ユニット;及び
[0015]上記中間像を像検出器に収束するように結合された拡大モジュール。
[0021]上記初期像の傾斜を補正して、実質的に無歪の中間像を形成するステップ;及び
[0022]上記中間像を像検出器に収束するステップ。
・レンズ170
−第1表面曲率:−554.32;対物平面からの距離:0.10
−厚み:28.92
−第2表面曲率:38.23
・レンズ172
−第1表面曲率:22.17;レンズ172の第2表面からの距離:14.35
−厚み:42.86
−第2表面曲率:59.97
・レンズ174
−第1表面曲率:116.11;レンズ172の第2表面からの距離:0.10
−厚み:28.99
−第2表面曲率:90.24
・レンズ176
−第1表面曲率:233.96;レンズ174の第2表面からの距離:0.10
−厚み:10.00
−第2表面曲率:578.50
・レンズ178
−第1表面曲率:260.16;レンズ176の第2表面からの距離:15.94
−厚み:53.07
−第2表面曲率:136.10
・レンズ180
−第1表面曲率:446.16;レンズ178の第2表面からの距離:0.10
−厚み:10.00
−第2表面曲率:−2850.63
・レンズ182
−第1表面曲率:473.81;レンズ180の第2表面からの距離:34.11
−厚み:28.54
−第2表面曲率:294.90
・レンズ184
−第1表面曲率:701.43;レンズ182の第2表面からの距離:0.10
−厚み:10.00
−第2表面曲率:−4117.15
・レンズ186
−第1表面曲率:1275.43;レンズ184の第2表面からの距離:21.78
−厚み:48.42
−第2表面曲率:395.84
・レンズ188
−第1表面曲率:−11047.73;レンズ186の第2表面からの距離:0.10
−厚み:132.30
−第2表面曲率:313.99
[0077]図6に示す対物レンズ150は、NA=0.95を有する。
・レンズ200
−第1表面曲率:−29.53;対物平面からの距離:60.48
−厚み:9.99
−第2表面曲率:−36.37
・レンズ202
−第1表面曲率:469.41;レンズ200の第2表面からの距離:32.98
−厚み:14.85
−第2表面曲率:−100.00
・レンズ204
−第1表面曲率:−69.56;レンズ202の第2表面からの距離:36.50
−厚み:4.41
−第2表面曲率:−76.35
・レンズ206
−第1表面曲率:61.15;レンズ204の第2表面からの距離:10.20
−厚み:11.78
−第2表面曲率:−345.29
・レンズ208
−第1表面曲率:−89.75;レンズ206の第2表面からの距離:4.72
−厚み:5.50
−第2表面曲率:54.75
・レンズ210
−第1表面曲率:255.13;レンズ208の第2表面からの距離:38.23
−厚み:18.21
−第2表面曲率:−63.34
・レンズ212
−第1表面曲率:−60.74;レンズ210の第2表面からの距離:41.26
−厚み:19.39
−第2表面曲率:−165.26
レンズ212の第2表面から瞳孔214までの距離は、20.00mmである。瞳孔の右側の素子は、上述した素子と鏡像において同一である。
・レンズ222(平凹)
−第1表面曲率:フラット;レンズ200(リレー192の最後のレンズ)の第2表面からの距離:18.51
−厚み:13.78
−第2表面曲率:92.90
−偏心:5.65;傾斜:−4.93°(リレー192の軸に対する)
・レンズ224(平凸)
−第1表面曲率:フラット;レンズ200の第2表面からの距離:39.27
−厚み:11.38
−第2表面曲率:−103.17
−偏心:−15.39;傾斜:−16.77°
この構成では、プリズム216の面218がレンズ200の第2表面から71.27mmに配置され、偏心が−3.84mmで、傾斜が−69.69°である。
Claims (14)
- 表面に対して斜めのビュー角度に沿って表面のエリアを像形成する装置であって、
複数のレンズを含み、上記表面に対する傾斜角度であるビュー角度に向けられた光学軸を有し、上記エリアから光学放射を収集することにより上記エリアの初期傾斜像を形成するように適応された無限焦点光学リレーであって、上記初期傾斜像は、上記ビュー角度に等しい傾斜角度を有している、無限焦点光学リレーと、
前記無限焦点光学リレーに光学的に結合される傾斜補正ユニットであって、入口面及び出口面を有するプリズムを含み、上記入口面がウェハの表面に垂直な方向にほぼ平行に方向付けられており、上記無限焦点光学リレーと組み合わせて無歪の中間像を形成するように上記初期傾斜像の傾斜を補正するように構成されており、前記出口面が前記中間像の平面にほぼ平行に方向付けられている傾斜補正ユニットと、
上記中間像を像検出器に収束するように前記傾斜補正ユニットに光学的に結合された拡大モジュールと、
を備えた装置。 - 上記無限焦点光学リレーは、テレセントリックであって、1の倍率を有する、請求項1に記載の装置。
- 上記無限焦点光学リレーは、中心瞳孔を有し、更に、
上記中心瞳孔の周りに対称的に配列された複数のレンズと、
上記中心瞳孔に配置された空間的フィルタと、
を備えた、請求項2に記載の装置。 - 上記無限焦点光学リレーにより形成される上記初期傾斜像は、上記ビュー角度に等しい傾斜角で傾斜される、請求項3に記載の装置。
- 前記プリズムの方向付けは、無限焦点光学リレーの光軸とウェハの表面のなす角度の関数として変化する、請求項1に記載の装置。
- 上記中間像は虚像を含む、請求項5に記載の装置。
- 上記拡大モジュールは、異なる各々の倍率をもつ複数の選択可能な拡大素子を備え、その全ての拡大素子は、上記中間像における対物平面と、上記像検出器における像平面とを有する、請求項1に記載の装置。
- 表面に対して斜めのビュー角度に沿って表面のエリアを像形成する方法において、
複数のレンズを含み、上記ビュー角度に向けられた光学軸を有する無限焦点光学リレーを使用して光学放射を収集することにより上記エリアの初期傾斜像を形成するステップであって、上記無限焦点光学リレーが上記エリアからの光学放射を収集するように構成されており、上記初期傾斜像が上記ビュー角度と等しい傾斜角度を有する、上記初期傾斜像を形成するステップと、
入口面及び出口面を有するプリズムを含む傾斜補正ユニットを用いて、上記初期傾斜像の傾斜を補正するステップと、を備え、上記入口面がウェハの表面に垂直な方向にほぼ平行に方向付けられており、上記傾斜補正ユニットが、上記無限焦点光学リレーと組み合わせて上記出口面に平行な無歪の中間像を形成するように上記初期傾斜像の傾斜を補正するように構成されており、更に、
前記傾斜補正ユニットに光学的に結合された拡大モジュールを用いて上記中間像を像検出器に収束するステップを備えた方法。 - 上記無限焦点光学リレーは、テレセントリックであって、1の倍率を有する、請求項8に記載の方法。
- 初期傾斜像を形成する上記ステップは、上記無限焦点光学リレーの中心瞳孔に配置された空間的フィルタを使用して上記収集された光学放射を空間的にフィルタリングする段階を含む、請求項9に記載の方法。
- 初期傾斜像を形成する上記ステップは、上記ビュー角度に等しい傾斜角で上記初期傾斜像を形成する段階を含む、請求項10に記載の方法。
- 前記プリズムの方向付けは、無限焦点光学リレーの光軸とウェハの表面のなす角度の関数として変化する、請求項8に記載の方法。
- 上記中間像は虚像を含む、請求項12に記載の方法。
- 中間像を収束する上記ステップは、異なる各々の倍率をもつ複数の選択可能な拡大素子の1つを選択することにより上記像検出器の倍率を設定する段階を含み、その全ての拡大素子は、上記中間像における対物平面と、上記像検出器における像平面とを有する、請求項8に記載の方法。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41508202P | 2002-09-30 | 2002-09-30 | |
| US60/415,082 | 2002-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004541515A Division JP2006501469A (ja) | 2002-09-30 | 2003-09-08 | 斜めのビュー角度をもつ検査システム |
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| Publication Number | Publication Date |
|---|---|
| JP2009025303A JP2009025303A (ja) | 2009-02-05 |
| JP5702045B2 true JP5702045B2 (ja) | 2015-04-15 |
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| JP2004541513A Expired - Fee Related JP4704040B2 (ja) | 2002-09-30 | 2003-09-08 | 光学的検査のための照明システム |
| JP2004541515A Pending JP2006501469A (ja) | 2002-09-30 | 2003-09-08 | 斜めのビュー角度をもつ検査システム |
| JP2004541516A Expired - Lifetime JP4546830B2 (ja) | 2002-09-30 | 2003-09-08 | 暗フィールド検査システム |
| JP2008181750A Expired - Lifetime JP5702045B2 (ja) | 2002-09-30 | 2008-07-11 | 斜めのビュー角度をもつ検査システム |
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| JP2004541513A Expired - Fee Related JP4704040B2 (ja) | 2002-09-30 | 2003-09-08 | 光学的検査のための照明システム |
| JP2004541515A Pending JP2006501469A (ja) | 2002-09-30 | 2003-09-08 | 斜めのビュー角度をもつ検査システム |
| JP2004541516A Expired - Lifetime JP4546830B2 (ja) | 2002-09-30 | 2003-09-08 | 暗フィールド検査システム |
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| US (5) | US7339661B2 (ja) |
| EP (3) | EP1576355A2 (ja) |
| JP (4) | JP4704040B2 (ja) |
| CN (5) | CN1771456A (ja) |
| AU (3) | AU2003265989A1 (ja) |
| IL (2) | IL167353A (ja) |
| WO (3) | WO2004031753A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7832643B2 (en) | 1998-03-24 | 2010-11-16 | Metrologic Instruments, Inc. | Hand-supported planar laser illumination and imaging (PLIIM) based systems with laser despeckling mechanisms integrated therein |
| US8042740B2 (en) | 2000-11-24 | 2011-10-25 | Metrologic Instruments, Inc. | Method of reading bar code symbols on objects at a point-of-sale station by passing said objects through a complex of stationary coplanar illumination and imaging planes projected into a 3D imaging volume |
| US7265900B2 (en) * | 2002-09-30 | 2007-09-04 | Applied Materials, Inc. | Inspection system with oblique viewing angle |
| CN1771456A (zh) * | 2002-09-30 | 2006-05-10 | 应用材料以色列股份有限公司 | 用于光学检测的照射系统 |
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