JP7209610B2 - 光学試験用装置および光学測定器具の試験方法 - Google Patents
光学試験用装置および光学測定器具の試験方法 Download PDFInfo
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- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
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- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
- G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
- G01S7/4815—Constructional features, e.g. arrangements of optical elements of transmitters alone using multiple transmitters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
- G01J2009/006—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength using pulses for physical measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N2021/8812—Diffuse illumination, e.g. "sky"
- G01N2021/8816—Diffuse illumination, e.g. "sky" by using multiple sources, e.g. LEDs
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9513—Liquid crystal panels
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Description
図1は、光学測定器具2の実際の使用態様を示す図(図1(a))、光学測定器具2の試験の際の使用態様を示す図(図1(b))である。図2は、第一の実施形態にかかる入射対象4の平面図(図2(a))、正面図(図2(b))である。
なお、第一の実施形態には、以下のような変形例が考えられる。
第二の実施形態にかかる光学試験用装置1は、入射対象4において3個の距離一定面4a、4b、4cが存在する場合(図7参照)に対応すべく、試験用光源12、14、16および液晶パネル(光透過部材)32、34、36が3個存在し、しかもハーフミラー40にかえてダイクロイックミラー42が存在することが、第一の実施形態と異なる。
第三の実施形態にかかる光学試験用装置1は、光学測定器具2の距離測定の試験を行う点が第一の実施形態と異なる。
第四の実施形態にかかる光学試験用装置1は、光学測定器具2の水平方向(X方向)の位置測定の試験を行う点が第三の実施形態と異なる。
2a 光源
2b 受光部
4 入射対象
4a、4b、4c 距離一定面
1 光学試験用装置
12、14、16 試験用光源
22、24、26 集光レンズ
18 光源駆動部
32、34、36 液晶パネル(光透過部材)
400a、400b 光透過領域
400 受光画像
38 液晶パネル駆動部
40 ハーフミラー(合波部)
42 ダイクロイックミラー(合波部)
50 結像レンズ
Claims (13)
- 光源からの入射光パルスを入射対象に与えて、該入射光パルスが該入射対象により反射された反射光パルスを取得する光学測定器具を試験する際に使用する光学試験用装置であって、
試験用光パルスを出力する2以上の試験用光源と、
光透過領域を有し、前記2以上の試験用光源の各々から前記試験用光パルスを受けて前記光透過領域を透過させる2以上の光透過部材と、
前記2以上の光透過部材を透過した前記試験用光パルスを合波し、前記光学測定器具に与える合波部と、
を備え、
前記光透過領域が、前記入射対象において前記光学測定器具からの距離が一定である距離一定面の各々に対応し、
前記試験用光パルスの各々が出力されてから、前記合波部に到達するまでの到達時間が異なり、
前記到達時間の差が、前記距離一定面の間の面間距離に対応する、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記光学測定器具がToFセンサである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記試験用光源が、レーザダイオードである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記試験用光源が、発光ダイオードである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記光透過部材が、液晶パネルである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記光透過部材が、フィルムである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記合波部が、ハーフミラーである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記合波部が、ダイクロイックミラーである、
光学試験用装置。 - 請求項1に記載の光学試験用装置であって、
前記合波部が、偏光ビームスプリッタである、
光学試験用装置。 - 請求項1ないし9のいずれか一項に記載の光学試験用装置から前記試験用光パルスを合波したものを、前記光学測定器具により受ける受光工程と、
前記受光工程の受光結果に基づき、前記距離一定面のいずれか一つ以上の形状を取得する形状取得工程と、
取得された前記形状に基づき、前記光学測定器具の受光性能を評価する性能評価工程と、
を備えた光学測定器具の試験方法。 - 請求項1ないし9のいずれか一項に記載の光学試験用装置から前記試験用光パルスを合波したものを、前記光学測定器具により受ける受光工程と、
前記受光工程の受光結果に基づき、前記距離一定面の境界を取得する境界取得工程と、
取得された前記境界に基づき、前記光学測定器具の受光性能を評価する性能評価工程と、
を備えた光学測定器具の試験方法。 - 請求項1ないし9のいずれか一項に記載の光学試験用装置から前記試験用光パルスを合波したものを、前記光学測定器具により受ける受光工程と、
前記受光工程の受光結果に基づき、前記距離一定面の間の面間距離を取得する面間距離取得工程と、
取得された前記面間距離に基づき、前記光学測定器具の受光性能を評価する性能評価工程と、
を備えた光学測定器具の試験方法。 - 請求項1ないし9のいずれか一項に記載の光学試験用装置から前記試験用光パルスを合波したものを、前記光学測定器具により受ける受光工程と、
前記受光工程の受光結果に基づき、前記入射対象における任意の2点間の水平方向距離を取得する水平方向距離取得工程と、
取得された前記水平方向距離に基づき、前記光学測定器具の受光性能を評価する性能評価工程と、
を備え、
前記水平方向は、前記距離一定面の法線方向と直交する方向である、
光学測定器具の試験方法。
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JP2019188822A JP7209610B2 (ja) | 2019-10-15 | 2019-10-15 | 光学試験用装置および光学測定器具の試験方法 |
TW109123200A TWI729881B (zh) | 2019-10-15 | 2020-07-09 | 光學試驗用裝置及光學測定器具的試驗方法 |
KR1020200090139A KR102327883B1 (ko) | 2019-10-15 | 2020-07-21 | 광학 시험용 장치 및 광학 측정 기구의 시험 방법 |
DE102020209820.4A DE102020209820A1 (de) | 2019-10-15 | 2020-08-04 | Optische testvorrichtung und verfahren zur testen eines optischen messinstruments |
CN202010789533.8A CN112666540B (zh) | 2019-10-15 | 2020-08-07 | 光学试验用装置和光学测定器具的试验方法 |
US16/987,810 US11762072B2 (en) | 2019-10-15 | 2020-08-07 | Optical testing apparatus and method of testing optical measuring instrument |
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KR102643749B1 (ko) * | 2021-12-09 | 2024-03-06 | 한국자동차연구원 | 차량의 인지센서 오염도 평가 장치 및 방법 |
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