KR101167260B1 - 비냉각 마이크로 볼로미터 검출기를 사용하는 방사 측정 - Google Patents
비냉각 마이크로 볼로미터 검출기를 사용하는 방사 측정 Download PDFInfo
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- KR101167260B1 KR101167260B1 KR1020067002832A KR20067002832A KR101167260B1 KR 101167260 B1 KR101167260 B1 KR 101167260B1 KR 1020067002832 A KR1020067002832 A KR 1020067002832A KR 20067002832 A KR20067002832 A KR 20067002832A KR 101167260 B1 KR101167260 B1 KR 101167260B1
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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
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
- G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
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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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
- G01J5/53—Reference sources, e.g. standard lamps; Black bodies
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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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0803—Arrangements for time-dependent attenuation of radiation signals
- G01J5/0805—Means for chopping radiation
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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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/80—Calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only
- H04N23/23—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only from thermal infrared radiation
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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
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- Radiation Pyrometers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
Description
Claims (62)
- 적외선 촬상 카메라로서,적외선 방사 에너지를 검출하도록 구성된 적외선 센서의 어레이를 포함하는 비냉각 및 비차폐 검출기, 및i) 외부의 장면으로부터 유래하지 않는 적외선 방사 에너지를 나타내는 제1기준온도를 측정하기 위해 셔터에 위치하는 제1 온도센서를 이용하여 상기 셔터가 닫혀 있는 동안에 상기 적외선 촬상 카메라의 셔터 온도의 교정온도측정을 행하는 단계,ii) 상기 교정온도측정시에 상기 적외선 센서의 어레이의 평균 출력을 포함하는 평균 영상신호를 결정하는 단계, 및iii) 상기 적외선 센서의 어레이에 있어서 각 적외선 센서에 대해 신호를 온도로 변환하는 동일 함수를 사용하여, 상기 셔터가 개방되어 있는 사이에 불균일 보정 후에 얻어진 상기 적외선 센서의 각각의 출력으로부터 상기 평균 영상신호를 뺀 것에서 적외선 센서의 각각에 대하여 온도를 산출하는 단계에 의해 교정동작을 실행하는 교정기를 포함하고,상기 제1 기준온도는 신호를 온도로 변환하는 함수의 옵셋인 것을 특징으로 하는 적외선 촬상 카메라.
- 제1항에 있어서,상기 교정기는 초기 교정온도 측정으로부터 얻은 초기 제1 기준온도를 후속되는 교정온도측정으로부터 얻어지는 후속되는 제1기준온도와 조합시키도록 구성되고, 상기 조합하는 것은 시간의존함수를 사용하여 상기 교정온도측정 후의 시점에 대해 상기 제1 온도의 외삽치를 생성하는 것을 특징으로 하는 적외선 촬상 카메라.
- 제1항 또는 제2항에 있어서, 상기 카메라의 셔터의 온도측정값의 함수인 초기값을 사용하여 상기 보정을 행하도록 구성된 것을 특징으로 하는 적외선 촬상 카메라.
- 제1항 또는 제2항에 있어서, 상기 교정기는 상기 적외 촬상 카메라의 하우징 상에 배치된 제2온도센서를 이용하여 상기 셔터가 개방되어 있는 동안에 제2기준온도를 측정하도록 더 구성되어 있고, 상기 제2기준온도는 상기 제2기준온도의 측정시점에 대하여 상기 신호를 온도로 변환하는 함수의 추가의 파라메터인 것을 특징으로 하는 적외선 촬상 카메라.
- 제3항에 있어서, 상기 셔터는 상기 비냉각 및 비차폐 검출기에 의해 이용되는 스펙트럼 주파수 범위 내의 방사율을 가지는 시트를 포함하고, 상기 셔터로부터 반사된 방사는 상기 셔터의 온도를 표시하고, 상기 교정기는 상기 셔터로부터의 방사를 측정하는 것에 의해 상기 신호를 온도로 변환하는 함수의 추가의 파라메터인 추가의 기준온도를 결정하도록 구성되는 것을 특징으로 하는 적외선 촬상 카메라.
- 제3항에 있어서, 상기 셔터는 상기 비냉각 및 비차폐 검출기에 의해 사용되는 스펙트럼 주파수 범위 내의 반사율을 가지는 시트를 포함하고, 상기 셔터로부터 반사된 방사는 상기 비냉각 및 비차폐 검출기의 온도를 나타내고, 상기 교정기는 상기 셔터로부터 반사된 방사를 측정하는 것에 의해 상기 신호를 온도로 변환하는 함수의 추가의 파라메터인 추가의 기준온도를 결정하도록 구성되는 것을 특징으로 하는 적외선 촬상 카메라.
- 제1항 또는 제2항에 있어서, 상기 교정기는 적외촬상 카메라의 열시정수 미만의 시간 간격으로 상기 교정온도 측정을 행하도록 구성되는 것을 특징으로 하는 적외선 촬상 카메라.
- 제1항 또는 제2항에 있어서, 상기 비냉각 및 비차폐 검출기는 마이크로볼로미터 어레이를 포함하는 것을 특징으로 하는 적외선 촬상 카메라.
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- 교정온도 측정에 따라 비냉각 및 비차폐 방사계의 응답을 보정하는 방법으로서, 상기 방사계가 IR 센서의 어레이에 입사하는 IR방사선에 따라 온도화상을 형성하기 위해 화상 응답을 제공하기 위해 상기 IR 센서의 어레이와 제어가능한 개폐를 위한 셔터를 포함하고,상기 방법이, 상기 셔터가 폐쇄되어 있는 동안에 상기 셔터의 온도를 포함함과 동시에 외부의 장면으로부터 유래하지 않는 적외방사를 표시하는 제1기준 온도를 결정하기 위해 교정온도 측정을 실행하는 단계;상기 교정온도 측정의 시점에서의 IR 센서의 어레이의 평균 출력을 포함하는 평균 화상 신호를 결정하는 단계;비냉각 및 비차폐 방사계에 의해 검출된 적외방사 에너지에 대한 균일 응답을 가지는 복수의 균일한 출력을 제공하기 위해 상기 셔터가 개방되어 있는 동안에 얻어진 IR 센서의 어레이의 복수의 출력 상에서 비균일성 보정(NUC)을 수행하는 단계;상기 균일 출력의 각각에 대하여 신호를 온도로 변환하는 동일 함수를 사용하여 각각의 균일 출력과 상기 평균 화상 신호와의 차이로부터 IR 센서의 어레이에서 각 IR 센서에 대한 온도를 산출하는 단계를 포함하고, 상기 제1기준온도는 상기 신호를 온도 변환하는 함수의 파라메터인 것을 특징으로 하는 방법.
- 제11항에 있어서, 일련의 교정온도 측정에 걸쳐 상기 셔터의 온도에 대한 상기 IR 센서의 어레이에서의 상기 IR 센서의 시간의존응답을 결정하는 단계; 및상기 온도 산출의 수정에 시간의존응답을 사용하는 단계를 포함하는 방법.
- 제11항에 있어서, 일련의 온도측정에 걸쳐 상기 IR 센서의 어레이의 상기 출력 신호로부터 산출된 물체의 온도와 상기 물체로부터 직접 측정된 온도와의 차이를 결정하는 것에 의해 일련의 오차를 얻는 단계를 더 포함하고;후속 온도측정을 위해, 상기 IR 센서의 어레이에서의 각 IR 센서에 대하여 온도를 산출하는 단계는 후속 오차를 감소시키기 위해 상기 일련의 오차에 따라 상기 균일 출력을 분석하는 단계를 포함하는 것을 특징으로 하는 방법.
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Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL15734403A IL157344A0 (en) | 2003-08-11 | 2003-08-11 | Internal temperature reference source and mtf inverse filter for radiometry |
| IL157344 | 2003-08-11 | ||
| PCT/IL2004/000714 WO2005015143A2 (en) | 2003-08-11 | 2004-08-03 | Radiometry using an uncooled microbolometer detector |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020117005176A Division KR101236551B1 (ko) | 2003-08-11 | 2004-08-03 | 비냉각 마이크로 볼로미터 검출기를 사용하는 방사 측정을 이용한 적외선 카메라 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20060064615A KR20060064615A (ko) | 2006-06-13 |
| KR101167260B1 true KR101167260B1 (ko) | 2012-07-23 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020067002832A Expired - Fee Related KR101167260B1 (ko) | 2003-08-11 | 2004-08-03 | 비냉각 마이크로 볼로미터 검출기를 사용하는 방사 측정 |
| KR1020117005176A Expired - Fee Related KR101236551B1 (ko) | 2003-08-11 | 2004-08-03 | 비냉각 마이크로 볼로미터 검출기를 사용하는 방사 측정을 이용한 적외선 카메라 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020117005176A Expired - Fee Related KR101236551B1 (ko) | 2003-08-11 | 2004-08-03 | 비냉각 마이크로 볼로미터 검출기를 사용하는 방사 측정을 이용한 적외선 카메라 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8274050B2 (ko) |
| EP (2) | EP1654524A2 (ko) |
| JP (1) | JP4604033B2 (ko) |
| KR (2) | KR101167260B1 (ko) |
| IL (2) | IL157344A0 (ko) |
| WO (1) | WO2005015143A2 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101404654B1 (ko) | 2013-04-04 | 2014-06-09 | 국방과학연구소 | 초점평면배열 적외선 카메라의 영상 불균일 보정 방법 |
| KR101438327B1 (ko) | 2013-08-09 | 2014-09-04 | 주식회사 콕스 | 적외선 검출기의 온도 변화에 따라 불균일을 보정하는 열상 카메라 및 그 불균일 보정 방법 |
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| EP2309237A2 (en) | 2011-04-13 |
| IL157344A0 (en) | 2004-06-20 |
| EP1654524A2 (en) | 2006-05-10 |
| KR20060064615A (ko) | 2006-06-13 |
| JP2007502403A (ja) | 2007-02-08 |
| EP2309237A3 (en) | 2012-11-28 |
| JP4604033B2 (ja) | 2010-12-22 |
| WO2005015143A2 (en) | 2005-02-17 |
| IL173541A0 (en) | 2006-07-05 |
| WO2005015143A3 (en) | 2005-04-28 |
| US20080210872A1 (en) | 2008-09-04 |
| US8274050B2 (en) | 2012-09-25 |
| KR101236551B1 (ko) | 2013-02-22 |
| IL173541A (en) | 2012-01-31 |
| KR20110028559A (ko) | 2011-03-18 |
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