Consultative Committee for Photometry and Radiometry ‐ CCPR Dr Takashi USUDA CCPR President and CIPM member (NMIJ Japan) 25 th meeting of the CGPM
Scope of the CCPR Consultative Committee for Photometry …………………… Describes the effects of visible light on the human eye, in terms of brightness (photometry) and colour(colorimetry) Radiometry ……………….….. Metrology related to the physical measurement of the properties of electromagnetic radiation, including visible light 2
Major events in CCPR 1875 Creation of Metre Convention – 1880 Invention of Long lasting filament 1931 Adaption of luminous function ~ 16 lm/W 1933 Establish of CCP (Photometry) – Commercialization of fluorescent lamp ~ 100 lm/W 1971 Establish of CCPR 1979 Adaption of current definition of the Candela 1999 ~ CIPM ‐ MRA – Commercialization of solid state lamp 250 lm/W~ 3
Major events in CCPR 2003 Closure of Photometry Section at the BIPM Source-base standard to detector-base standard Equivalency is maintained by international cooperation under CCPR 4
Areas of priority and potential Energy Photo voltaic Solid State Lighting (LED, OLED) Environment and climate Optical radiation balance (incoming to outgoing) 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 5
Stakeholder involvement 6
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 observer 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. 7
Economic Impact 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” 8 BERLIN AT NIGHT http://www.esa.int/
Thank you Consultative Committee for PR / Dr Takashi USUDA
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