JP2017026466A - 光学特性の測定装置 - Google Patents
光学特性の測定装置 Download PDFInfo
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- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
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- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
- G01N21/276—Calibration, base line adjustment, drift correction with alternation of sample and standard in optical path
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- G01N2021/557—Detecting specular reflective parts on sample
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- G01N21/55—Specular reflectivity
- G01N21/57—Measuring gloss
- G01N2021/575—Photogoniometering
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- G01N21/84—Systems specially adapted for particular applications
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Abstract
【解決手段】被検面の光学特性を測定する測定装置が提供される。測定装置は、光源からの光で前記被検面を照明する照明部と、前記照明部により照明された光の前記被検面からの反射光による像を撮る撮像部と、前記撮像部により得られた第1画像データの画素数を所定の低減率で低減して第2画像データを生成し、前記第2画像データを処理して前記被検面の光学特性を求める処理部とを備え、前記処理部は、前記照明部及び前記撮像部の動作設定に応じて前記所定の低減率を決定する。
【選択図】図1
Description
図1は、本実施形態における光学特性の測定装置の構成を示す図である。本実施形態では、レンズ、偏向部材または受光部などの寸法、構成および配置は、国際規格あるいは国内規格で示される最低限の基本条件を満たすように設定するものとする。例えば、国内規格JIS−Z8741の第4章「測定条件」によれば、例えば光学特性の一つである鏡面光沢度の測定に関して、光源像の開き角(投光系開き角)、受光部の開き角(受光系開き角)、入射角および受光角などが定義されている。本実施形態の測定装置はこのような規格に準拠する。
演算部104は、生成された第2画像データに基づいて演算処理を行い、被検面の鏡面光沢度などの光学特性を求める。
(1)画像データの低減をしない場合(画素数1)。
(2)1×8画素を積算して画素数を低減した場合(画素数8)。
(3)1×16画素を積算して画素数を低減した場合(画素数16)。
(4)1×32画素を積算して画素数を低減した場合(画素数32)。
グラフより、画素数の低減率が高いほど測定誤差が大きくなることが分かる。
Claims (7)
- 被検面の光学特性を測定する測定装置であって、
光源からの光で前記被検面を照明する照明部と、
前記照明部により照明された光の前記被検面からの反射光による像を撮る撮像部と、
前記撮像部により得られた第1画像データの画素数を所定の低減率で低減して第2画像データを生成し、前記第2画像データを処理して前記被検面の光学特性を得る処理部と、
を備え、
前記処理部は、前記照明部及び前記撮像部の動作設定に応じて前記所定の低減率を決定することを特徴とする測定装置。 - 前記撮像部は、光電変換素子を持つ複数の画素がマトリクス状に配列された撮像素子を含み、
前記処理部は、前記所定の低減率に応じた画素ブロック形状を決定し、前記決定された画素ブロック形状で画定される画素ブロックごとに画素値の代表値を1画素の画素値として出力することで前記第2画像データを生成することを特徴とする請求項1に記載の測定装置。 - 前記代表値は、前記画素ブロックにおける画素値の積算値であることを特徴とする請求項2に記載の測定装置。
- 前記代表値は、前記画素ブロックにおける画素値の平均値であることを特徴とする請求項2に記載の測定装置。
- 前記処理部は、前記動作設定と前記画素ブロック形状との対応関係を記述したテーブルに基づいて前記低減率を決定することを特徴とする請求項2乃至4のいずれか1項に記載の測定装置。
- 前記動作設定は、前記照明部により前記被検面が照明される光の入射角及び前記撮像部で受光される前記反射光の受光角の設定を含むことを特徴とする請求項1乃至5のいずれか1項に記載の測定装置。
- 前記入射角及び前記受光角は、鏡面光沢度の測定のためにJIS−Z8741において規定された20度、45度、60度、75度、85度のうちの少なくともいずれかの角度であることを特徴とする請求項6に記載の測定装置。
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JP2015145249A JP6818403B2 (ja) | 2015-07-22 | 2015-07-22 | 光学特性の測定装置 |
EP16177084.7A EP3121588B1 (en) | 2015-07-22 | 2016-06-30 | Optical characteristic measuring apparatus |
US15/209,072 US10697887B2 (en) | 2015-07-22 | 2016-07-13 | Optical characteristic measuring apparatus |
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JP2015145249A JP6818403B2 (ja) | 2015-07-22 | 2015-07-22 | 光学特性の測定装置 |
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JP2017026466A true JP2017026466A (ja) | 2017-02-02 |
JP6818403B2 JP6818403B2 (ja) | 2021-01-20 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106770056A (zh) * | 2017-03-10 | 2017-05-31 | 苏州精创光学仪器有限公司 | 钢化玻璃识别仪及识别方法 |
JP7446725B2 (ja) | 2019-06-28 | 2024-03-11 | キヤノン株式会社 | 測定装置、測定方法、および、プログラム |
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KR20230105740A (ko) * | 2022-01-04 | 2023-07-12 | 삼성디스플레이 주식회사 | 표시 장치 및 표시 장치 구동 방법 |
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JP2001041888A (ja) * | 1999-07-02 | 2001-02-16 | Byk Gardner Gmbh | 表面品質を決定するためのデバイスおよび方法 |
JP2007225384A (ja) * | 2006-02-22 | 2007-09-06 | Konica Minolta Sensing Inc | 反射特性測定装置 |
JP2012013444A (ja) * | 2010-06-29 | 2012-01-19 | Kmew Co Ltd | 外観検査装置及び外観検査方法 |
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JP3938184B2 (ja) * | 2005-03-22 | 2007-06-27 | キヤノン株式会社 | 情報処理方法及びその装置 |
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JP4251193B2 (ja) * | 2006-05-23 | 2009-04-08 | コニカミノルタセンシング株式会社 | 反射特性測定装置 |
JP4798182B2 (ja) | 2008-07-30 | 2011-10-19 | 株式会社デンソー | 眩惑検出装置、眩惑検出プログラム、および前照灯制御装置 |
JP5631041B2 (ja) * | 2010-04-02 | 2014-11-26 | キヤノン株式会社 | 色処理装置、色処理方法、および、画像形成装置 |
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- 2015-07-22 JP JP2015145249A patent/JP6818403B2/ja active Active
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- 2016-06-30 EP EP16177084.7A patent/EP3121588B1/en active Active
- 2016-07-13 US US15/209,072 patent/US10697887B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001041888A (ja) * | 1999-07-02 | 2001-02-16 | Byk Gardner Gmbh | 表面品質を決定するためのデバイスおよび方法 |
JP2007225384A (ja) * | 2006-02-22 | 2007-09-06 | Konica Minolta Sensing Inc | 反射特性測定装置 |
JP2012013444A (ja) * | 2010-06-29 | 2012-01-19 | Kmew Co Ltd | 外観検査装置及び外観検査方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106770056A (zh) * | 2017-03-10 | 2017-05-31 | 苏州精创光学仪器有限公司 | 钢化玻璃识别仪及识别方法 |
CN106770056B (zh) * | 2017-03-10 | 2024-03-01 | 苏州精创光学仪器有限公司 | 钢化玻璃识别仪及识别方法 |
JP7446725B2 (ja) | 2019-06-28 | 2024-03-11 | キヤノン株式会社 | 測定装置、測定方法、および、プログラム |
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JP6818403B2 (ja) | 2021-01-20 |
US20170024895A1 (en) | 2017-01-26 |
US10697887B2 (en) | 2020-06-30 |
EP3121588B1 (en) | 2018-08-15 |
EP3121588A1 (en) | 2017-01-25 |
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