KR102056552B1 - 회절 광학 요소 및 간섭식 측정 방법 - Google Patents
회절 광학 요소 및 간섭식 측정 방법 Download PDFInfo
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- KR102056552B1 KR102056552B1 KR1020187016531A KR20187016531A KR102056552B1 KR 102056552 B1 KR102056552 B1 KR 102056552B1 KR 1020187016531 A KR1020187016531 A KR 1020187016531A KR 20187016531 A KR20187016531 A KR 20187016531A KR 102056552 B1 KR102056552 B1 KR 102056552B1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2441—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using interferometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02015—Interferometers characterised by the beam path configuration
- G01B9/02027—Two or more interferometric channels or interferometers
- G01B9/02028—Two or more reference or object arms in one interferometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02034—Interferometers characterised by particularly shaped beams or wavefronts
- G01B9/02038—Shaping the wavefront, e.g. generating a spherical wavefront
- G01B9/02039—Shaping the wavefront, e.g. generating a spherical wavefront by matching the wavefront with a particular object surface shape
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/02056—Passive reduction of errors
- G01B9/02057—Passive reduction of errors by using common path configuration, i.e. reference and object path almost entirely overlapping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/0207—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer
- G01B9/02072—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer by calibration or testing of interferometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/005—Testing of reflective surfaces, e.g. mirrors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0271—Testing optical properties by measuring geometrical properties or aberrations by using interferometric methods
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1866—Transmission gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
- G02B5/1871—Transmissive phase gratings
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/32—Holograms used as optical elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49764—Method of mechanical manufacture with testing or indicating
- Y10T29/49771—Quantitative measuring or gauging
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Geometry (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Instruments For Measurement Of Length By Optical Means (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Holo Graphy (AREA)
Abstract
Description
도 1은 회절 광학 요소를 갖는 간섭 측정 시스템의 단면도를 도시한다.
도 2는 제1 실시예에 따른 회절 광학 요소에서 입력파를 회절함으로써 발생된 출력파를 도 1에 따른 단면도에서 도시한다.
도 3은 방향 공간에서 도 2로부터의 출력파를 도시한다.
도 4는 도 2에 따른 출력파 중 2개의 파 벡터의 각도 관계를 도시한다.
도 5는 도 2에 따른 회절 광학 요소의 회절 구조 패턴의 구성을 도시한다.
도 6은 구면 파면을 갖는 출력파 중 하나에 의한 회절 광학 요소의 캘리브레이션을 도시한다.
도 7은 평면 출력파에 의한 회절 광학 요소의 다른 캘리브레이션을 도시한다.
도 8은 회절 광학 요소의 다른 실시예에서 입력파를 회절함으로써 발생된 출력파를 도 1에 따른 단면도에서 도시한다.
도 9는 방향 공간에서 도 8로부터의 출력파를 도시한다.
도 10은 도 8에 따른 회절 광학 요소의 회절 구조 패턴의 구성을 도시한다.
도 11은 도 1에 따른 간섭 측정 시스템에서 도 9에 따른 회절 광학 요소를 사용할 때 회절 효율 및 콘트라스트를 도시하는 도면이다.
도 12는 회절 광학 요소 전체에 관하여 도 8에 따른 회절 광학 요소의 위상 격자의 섹션의 크기비를 도시한다.
도 13은 도 8로부터 위상 격자의 격자 라인의 파형을 도시한다.
도 14는 도 13의 위상 격자로부터 격자 라인들 중 하나를 도시한다.
도 15는 방향 공간에서, 회절 광학 요소의 다른 실시예에서 회절에 의해 발생된 출력파를 도시한다.
도 16은 방향 공간에서, 회절 광학 요소의 다른 실시예에서 회절에 의해 발생된 출력파를 도시한다.
도 17은 본 발명에 따른 다른 실시예에서 회절 광학 요소의, 다레벨 위상 격자로서 구체화된 회절 구조 패턴을 도시한다.
도 18은 본 발명에 따라 제조된 광학 요소의 평면도를 도시한다.
도 19는 도 18로부터 광학 요소의 단면도를 도시한다.
14: 광학 요소 16: 간섭계
18: 광원 20: 조명 방사선
21: 레이저 22: 레이저빔
24: 포커싱 렌즈 26: 정지부
28: 확산빔 30: 렌즈-요소 그룹
32: 광축 34: 빔 스플리터
36: 피조 요소 38: 피조 영역
40: 기준파 42: 입력파
44: 평면 파면 45: 간섭계 카메라
46: 렌즈 시스템 47: 검출 영역
48: 카메라 칩 49: 평가 장치
50: 회절 광학 요소 52: 기판
54: 회절 구조 패턴 56: 비구면 출력파
58: 구면 출력파 60x +1: 평면 출력파
60x -1: 평면 출력파 60y +1: 평면 출력파
60y -1: 평면 출력파 62: 캘리브레이션 구체
64: 평면 미러 66: 복귀 측정파
70: 구면 출력파 72: 구면 출력파
74: 구면 출력파 76: 근사된 직선 경계 라인
78: 직선 보조 라인 80: 회전축
82: 최적합성을 갖는 회전 대칭 비구체
84: 의도된 형상
Claims (6)
- 광학 요소의 광학면의 의도된 형상으로부터 실제 형상의 편차를 결정하기 위한 방법이며,
- 입력파를 발생하는 단계,
- 상기 입력파의 빔 경로 내에 회절 광학 요소를 배열함으로써, 상기 입력파가 상기 회절 광학 요소와 상호 작용에 의해, 적어도 하나의 측정파로서 광학면의 의도된 형상에 순응된 측정파로 변환되고, 추가로 상기 회절 광학 요소에서 리트로 반사되는 입력파로부터 기준파가 발생되도록 하는 단계, 및
- 상기 순응된 측정파의 빔 경로 내에 광학면을 배열하고, 상기 광학면과의 상호 작용 후에 순응된 측정파의 파면을 상기 기준파를 기준으로 사용하여 상기 순응된 측정파가 상기 기준파와 간섭하는 간섭 측정에 의해 측정하는 단계를 포함하는, 광학 요소의 광학면의 의도된 형상으로부터 실제 형상의 편차를 결정하기 위한 방법. - 제1항에 있어서,
상기 입력파는 상기 회절 광학 요소와 상호 작용에 의해 적어도 하나의 캘리브레이션파로 추가로 변환되는, 광학 요소의 광학면의 의도된 형상으로부터 실제 형상의 편차를 결정하기 위한 방법. - 제1항 또는 제2항에 있어서,
상기 회절 광학 요소는 복합 인코딩된 위상 격자를 포함하는, 광학 요소의 광학면의 의도된 형상으로부터 실제 형상의 편차를 결정하기 위한 방법. - 기판과 상기 기판 위에 배열된 회절 구조 패턴을 갖는 회절 광학 요소이며, 상기 회절 구조 패턴은 그 위에 방사된 평면 또는 구면 입력파를 측정될 광학면의 의도된 형상에 순응된 적어도 하나의 비구면 출력파로 변환하도록 구성되며, 상기 회절 구조는 리트로 반사되는 입력파로부터 기준파를 발생시키도록 추가로 구성되고, 상기 기준파는 상기 순응된 측정파가 상기 기준파와 간섭하는 간섭 측정에 의해 상기 광학면과의 상호 작용 후의 상기 비구면 출력파의 파면을 측정하기 위한 기준으로 사용되도록 구성되는, 회절 광학 요소.
- 제4항에 있어서,
상기 입력파를 평면파 또는 구면파 형태의 적어도 하나의 캘리브레이션파로 추가로 변환하도록 구성된 회절 광학 요소. - 광학 요소의 광학면의 의도된 형상으로부터 실제 형상의 편차를 결정하기 위한 간섭 측정 시스템이며,
- 입력파를 발생하기 위한 광원,
- 회절 광학 요소이며, 상기 입력파가 상기 회절 광학 요소와 상호 작용에 의해 적어도 하나의 측정파로서, 광학면의 의도된 형상에 순응된 측정파로 변환되고, 추가로 상기 광학 요소에서 리트로 반사되는 입력파로부터 기준파가 발생되도록 상기 입력파의 빔 경로 내에 배열되는 회절 광학 요소,
- 상기 광학면과의 상호 작용 후에 순응된 측정파의 파면을 상기 기준파를 기준으로 사용하여 상기 순응된 측정파가 상기 기준파와 간섭하여 측정하기 위한 간섭계를 포함하는, 광학 요소의 광학면의 의도된 형상으로부터 실제 형상의 편차를 결정하기 위한 간섭 측정 시스템.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261707014P | 2012-09-28 | 2012-09-28 | |
| US61/707,014 | 2012-09-28 | ||
| DE102012217800.7A DE102012217800A1 (de) | 2012-09-28 | 2012-09-28 | Diffraktives optisches Element sowie Messverfahren |
| DE102012217800.7 | 2012-09-28 | ||
| PCT/EP2013/002904 WO2014048574A2 (en) | 2012-09-28 | 2013-09-27 | Diffractive optical element and measuring method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| KR1020157007564A Division KR101869141B1 (ko) | 2012-09-28 | 2013-09-27 | 회절 광학 요소 및 간섭식 측정 방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20180069923A KR20180069923A (ko) | 2018-06-25 |
| KR102056552B1 true KR102056552B1 (ko) | 2019-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020157007564A Active KR101869141B1 (ko) | 2012-09-28 | 2013-09-27 | 회절 광학 요소 및 간섭식 측정 방법 |
| KR1020187016531A Active KR102056552B1 (ko) | 2012-09-28 | 2013-09-27 | 회절 광학 요소 및 간섭식 측정 방법 |
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| KR1020157007564A Active KR101869141B1 (ko) | 2012-09-28 | 2013-09-27 | 회절 광학 요소 및 간섭식 측정 방법 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20150198438A1 (ko) |
| EP (1) | EP2901101B1 (ko) |
| JP (3) | JP6105731B2 (ko) |
| KR (2) | KR101869141B1 (ko) |
| CN (2) | CN107816939B (ko) |
| DE (1) | DE102012217800A1 (ko) |
| WO (1) | WO2014048574A2 (ko) |
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|---|---|---|---|---|
| US9234741B2 (en) * | 2014-04-01 | 2016-01-12 | Dmetrix, Inc. | Interferometric apparatus with computer-generated hologram for measuring non-spherical surfaces |
| DE102014117511A1 (de) * | 2014-11-28 | 2016-06-02 | Friedrich-Schiller-Universität Jena | Verfahren und Vorrichtung zur interferometrischen Prüfung |
| CN104656173B (zh) * | 2015-02-09 | 2017-05-03 | 浙江大学 | 一种基于光通量约束的随机编码混合光栅 |
| DE102015202676B4 (de) * | 2015-02-13 | 2016-09-22 | Carl Zeiss Smt Gmbh | Interferometrische Messvorrichtung |
| DE102015202695A1 (de) * | 2015-02-13 | 2016-08-18 | Carl Zeiss Smt Gmbh | Prüfvorrichtung sowie Verfahren zum Prüfen eines Spiegels |
| KR102598505B1 (ko) | 2015-05-20 | 2023-11-06 | 칼 짜이스 에스엠테 게엠베하 | 이미징 광학 시스템용 측정 방법 및 측정 배열체 |
| DE102016203562A1 (de) | 2016-03-04 | 2017-09-07 | Carl Zeiss Smt Gmbh | Messverfahren und Messanordnung für ein abbildendes optisches System |
| DE102015220588A1 (de) | 2015-10-22 | 2017-04-27 | Carl Zeiss Smt Gmbh | Messverfahren und Messanordnung für ein abbildendes optisches System |
| DE102015209490A1 (de) | 2015-05-22 | 2016-11-24 | Carl Zeiss Smt Gmbh | Interferometrische Messanordnung |
| DE102015209489A1 (de) | 2015-05-22 | 2016-06-02 | Carl Zeiss Smt Gmbh | Interferometrische Messvorrichtung |
| DE102015222366A1 (de) | 2015-11-12 | 2017-05-18 | Universität Stuttgart | Verkippte Objektwellen nutzendes und ein Fizeau-Interferometerobjektiv aufweisendes Interferometer |
| WO2018156702A1 (en) * | 2017-02-23 | 2018-08-30 | Nikon Corporation | Measurement of a change in a geometrical characteristic and/or position of a workpiece |
| DE102017204719A1 (de) * | 2017-03-21 | 2018-09-27 | Carl Zeiss Smt Gmbh | Metrologie-Target |
| GB201708100D0 (en) * | 2017-05-19 | 2017-07-05 | Sintef | Input device |
| DE102017216401A1 (de) | 2017-09-15 | 2018-10-11 | Carl Zeiss Smt Gmbh | Computer-generiertes Hologramm (CGH), sowie Verfahren zu dessen Herstellung |
| DE102017217369A1 (de) * | 2017-09-29 | 2019-04-04 | Carl Zeiss Smt Gmbh | Kompensationsoptik für ein interferometrisches Messsystem |
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- 2013-09-27 WO PCT/EP2013/002904 patent/WO2014048574A2/en not_active Ceased
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- 2013-09-27 CN CN201380051045.5A patent/CN104685317B/zh active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107816939B (zh) | 2020-04-14 |
| DE102012217800A1 (de) | 2014-04-03 |
| EP2901101B1 (en) | 2022-05-18 |
| CN104685317A (zh) | 2015-06-03 |
| EP2901101A2 (en) | 2015-08-05 |
| KR20180069923A (ko) | 2018-06-25 |
| KR20150046282A (ko) | 2015-04-29 |
| CN104685317B (zh) | 2017-12-22 |
| KR101869141B1 (ko) | 2018-06-19 |
| CN107816939A (zh) | 2018-03-20 |
| US20150198438A1 (en) | 2015-07-16 |
| JP2019090819A (ja) | 2019-06-13 |
| WO2014048574A2 (en) | 2014-04-03 |
| JP6105731B2 (ja) | 2017-03-29 |
| WO2014048574A3 (en) | 2014-05-30 |
| JP2017167133A (ja) | 2017-09-21 |
| JP6462025B2 (ja) | 2019-01-30 |
| JP2015535930A (ja) | 2015-12-17 |
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