Consultative Committee for Photometry and Radiometry CCPR Dr Takashi - - PowerPoint PPT Presentation

Consultative Committee for Photometry and Radiometry ‐ CCPR

Dr Takashi USUDA CCPR President and CIPM member (NMIJ Japan) 25th meeting of the CGPM

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Scope of the CCPR

Consultative Committee for Photometry…………………… Radiometry……………….…..

Metrology related to the physical measurement of the properties of electromagnetic radiation, including visible light Describes the effects of visible light

• n the human eye, in terms of

brightness (photometry) and colour(colorimetry)

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Major events in CCPR

1875 Creation of Metre Convention

– 1880 Invention of Long lasting filament

1931 Adaption of luminous function 1933 Establish of CCP (Photometry)

– Commercialization of fluorescent lamp

1971 Establish of CCPR 1979 Adaption of current definition of the Candela 1999 ~ CIPM‐MRA

– Commercialization of solid state lamp

~ 16 lm/W ~ 100 lm/W 250 lm/W~

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2003 Closure of Photometry Section at the BIPM Source-base standard to detector-base standard Equivalency is maintained by international cooperation under CCPR

Major events in CCPR

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Areas of priority and potential

Energy

Photo voltaic Solid State Lighting (LED, OLED)

Environment and climate

Optical radiation balance (incoming to

• utgoing)

monitoring, affecting global warming

Health and Quality of life

Use of optical radiation for both diagnosis and treatment

Security

THz industry for communication, spectrometry, imaging, Photon based cryptography

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Stakeholder involvement

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Achievements 2011 ‐ 2014

Two CGPM resolutions recognizing the importance of the use of SI‐ traceable units in studies related to climate change Through cooperation with the CCPR, the WMO is replacing its conventional World Radiometric Reference (WRR) for solar irradiance measurements by SI‐traceable measurements New member CMI Czech Republic and

• bserver CMS/ITRI Chinese Taipei

Creation of several Task Groups to investigate metrology needs and to foster cooperation in emerging fields: fibre optics, few‐photon metrology, THz metrology.

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Economic Impact

BERLIN AT NIGHT http://www.esa.int/

 Energy consumption

Improvement of luminous efficacy of LED luminaires by 1% will then finally save electrical energy of value 4 billion €/year globally

 Energy production

Financial uncertainty of solar cell calibration = 30 GW/year x1.7 €/W x 1 % = 500 M€/year

 Environmental and climate foreseen

Economic losses by natural disaster (Extreme temp., flood, storm,..) 2.4 T US$(1970‐2012)

 Production and quality control

700 B US$ is the estimated value of shipments in industries (automotive, printing, etc.) for which unacceptable appearance may result in “NO SALE”

Thank you

Consultative Committee for PR / Dr Takashi USUDA