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Japan, NMIJ AIST (National Metrology Institute of Japan)
Complete CMCs in Photometry and Radiometry for Japan (.PDF file)
Irradiance, spectral. Tungsten lamp, 5E-03 W/(m2 nm) to 5.5E-02 W/(m2 nm)
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 6.0
Monochromator
Wavelength range: 2300 nm to 2500 nm (excludes 2300 nm)
Bandwidth: 9 nm to 7 nm, varies with wavelength
Approved on 16 January 2011
 
Reflectance, diffuse, spectral. Spectrally-neutral material, 0.8 to 1
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.46
Reference spectrophotometer
Wavelength: 360 nm to 440 nm (excludes 440 nm)
Bandwidth: 1.5 nm
Specific measurement conditions: d/0, 0/d
Approved on 16 January 2011
 
Reflectance, diffuse, spectral. Spectrally-neutral material, 0.8 to 1
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.30
Reference spectrophotometer
Wavelength range: 440 nm to 770 nm (excludes 770 nm)
Bandwidth: 1.5 nm
Specific measurement conditions: d/0, 0/d
Approved on 16 January 2011
 
Reflectance, diffuse, spectral. Spectrally-neutral material, 0.8 to 1
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.42
Reference spectrophotometer
Wavelength: 770 nm to 900 nm (excludes 900 nm)
Bandwidth: 1.5 nm
Specific measurement conditions: d/0, 0/d
Approved on 16 January 2011
 
Reflectance, diffuse, spectral. Spectrally-neutral material, 0.8 to 1
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.64
Reference spectrophotometer
Wavelength range: 900 nm to 1200 nm (excludes 1200 nm)
Bandwidth: 3 nm
Specific measurement conditions: d/0, 0/d
Approved on 16 January 2011
 
Reflectance, diffuse, spectral. Spectrally-neutral material, 0.8 to 1
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.80
Reference spectrophotometer
Wavelength range: 1200 nm to 1600 nm
Bandwidth: 3 nm
Specific measurement conditions: d/0, 0/d
Approved on 16 January 2011
 
Fiber optic power meter, linearity. General detector, 1E-09 W to 1E-03 W
Relative expanded uncertainty (k = 2, level of confidence 95 %) in dB: 5E-04 to 4.5E-03, varies with attenuation
Fiber optic power meter
Wavelength: 1550 nm
Specification standard used: optical power meter with calibrated linearity
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.23 to 0.33, varies with power level
Comparison with reference
Wavelength: 1310 nm
Power level: 1 pW to 1 mW
Type of laser: ECLD
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.23 to 0.26, varies with power level
Comparison with reference
Wavelength: 1550 nm
Power level: 1 pW to 1 mW
Type of laser: ECLD
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.23 to 0.26, varies with power level
Comparison with reference
Wavelength: 1550 nm
Power level: 1 mW to 1 W
Type of laser: ECLD with Optical Amplifier
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.21
Comparison with reference
Wavelength: 852 nm
Power level: 1 mW
Type of laser: FPLD
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.30
Comparison with reference
Wavelength: 852 nm
Power level: 0.5 mW to < 1 mW
Type of laser: FPLD
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.34
Comparison with reference
Wavelength: 852 nm
Power level: 0.1 mW to < 0.5 mW
Type of laser: FPLD
Approved on 16 January 2011
 
Responsivity, fiber optic power. Fiber optic power meter. Measurand unit, A/W, V/W, reading/W, W, dB, dBm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.48
Comparison with reference
Wavelength: 852 nm
Power level: 0.05 mW to < 0.1 mW
Type of laser: FPLD
Approved on 16 January 2011
 
Luminous intensity. Tungsten lamp, 10 cd to 3000 cd
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.64
Network of lamps, photometer and photometric bench
Correlated colour temperature: 2000 K to 3100 K
 
Luminous flux. Tungsten lamp, 5 lm to 9000 lm
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.84
Goniophotometer and integrating sphere
Correlated colour temperature: 2300 K to 2800 K
 
Illuminance. Tungsten lamp, 1 lx to 3000 lx
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.7
Network of lamps, photometer and photometric bench
Correlated colour temperature: 2856 K
 
Responsivity, spectral, power. Broadband detector. Measurand unit, A/W
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 4.8 to 1.6, varies with wavelength
Double grating monochromator
Wavelength: 200 nm to 250 nm (excludes 250 nm)
Bandwidth: 5 nm
Power level: < 10 µW
Approved on 16 January 2011
 
Responsivity, spectral, power. Broadband detector. Measurand unit, A/W
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.6
Double grating monochromator
Wavelength: 250 nm to 380 nm (excludes 380 nm)
Bandwidth: 5 nm
Power level: < 10 µW
Approved on 16 January 2011
 
Responsivity, spectral, power. Broadband detector. Measurand unit, A/W
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 1.0 to 0.45, varies with wavelength
Double grating monochromator
Wavelength: 380 nm to 650 nm (excludes 650 nm)
Bandwidth: 5 nm
Power level: < 10 µW
Approved on 16 January 2011