Jisoo Hwang, Dong-Hoon Lee, Seongchong Park, Yong-Wan Kim, and Seung-Nam Park, "Measurement uncertainty evaluation for emission color and luminance of displays," Appl. Opt. 48, 99-105 (2009)
We present a measurement uncertainty evaluation for emission color and luminance of displays. The calibration procedures and the measurement uncertainties of a CCD-based spectroradiometer and a filter-type luminance meter are discussed. As evaluation examples, a Commission Internationale de l’ Éclairage illuminant A, a liquid-crystal display with a light-emitting diode backlight, and a liquid-crystal display with a cold-cathode fluorescent lamp backlight are evaluated. The uncertainties in Commission Internationale de l’ Éclairage 1931 chromaticity coordinates are determined to be in a range from 0.0020 to 0.0050 (). The uncertainties in luminance are obtained from 4.8% to 8.5% by using the spectroradiometer, while the filter-type luminance meter shows the uncertainties from 1.1% to 1.6% ().
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CIE illuminant A, an LED-LCD, and a CCFL-LCD are used for the uncertainty evaluation
Uncertainties of the LED-LCD and CCFL-LCD are the values for the white primaries.
Table 2
Uncertainty Budget for the Luminance Responsivity of a Filter-Type Luminance Meter and That of a CCD-Based Spectroradiometer
Uncertainty Term
Component Description
Relative Standard Uncertainty (%)
Probability Distribution
reading of filter-type luminance meter
0.03
t
spectral mismatch correction factor
0.00
normal
reading of IS source photometer
0.03
t
luminance responsivity of IS source photometer
0.53
normal
combined standard uncertainty
0.53
normal
photometric reading of spectroradiometer
1.7
normal
reading of IS source photometer
0.03
t
luminance responsivity of IS source photometer
0.53
normal
combined standard uncertainty
1.8
normal
Table 3
Uncertainty Budget for the Luminance Measurement Using a Filter-type Luminance Meter and Uncertainty Budget for the Luminance Measurement with a CCD-Based Spectroradiometer a
luminance responsivity of filter-type luminance meter
0.53
0.53
0.53
combined standard uncertainty
0.53
0.54
0.55
photometric reading of spectroradiometer
1.7
2.1
3.9
luminance responsivity of spectroradiometer
1.8
1.8
1.8
combined standard uncertainty
2.4
2.8
4.2
CIE illuminant A, an LED-LCD, and a CCFL-LCD are used for the uncertainty evaluation.
Uncertainties of the LED-LCD and CCFL-LCD are the values for the red primaries.
Tables (3)
Table 1
Uncertainty Budget for the Measurement of Chromaticity Coordinates Obtained by Using a CCD-Based Spectroradiometera
CIE illuminant A, an LED-LCD, and a CCFL-LCD are used for the uncertainty evaluation
Uncertainties of the LED-LCD and CCFL-LCD are the values for the white primaries.
Table 2
Uncertainty Budget for the Luminance Responsivity of a Filter-Type Luminance Meter and That of a CCD-Based Spectroradiometer
Uncertainty Term
Component Description
Relative Standard Uncertainty (%)
Probability Distribution
reading of filter-type luminance meter
0.03
t
spectral mismatch correction factor
0.00
normal
reading of IS source photometer
0.03
t
luminance responsivity of IS source photometer
0.53
normal
combined standard uncertainty
0.53
normal
photometric reading of spectroradiometer
1.7
normal
reading of IS source photometer
0.03
t
luminance responsivity of IS source photometer
0.53
normal
combined standard uncertainty
1.8
normal
Table 3
Uncertainty Budget for the Luminance Measurement Using a Filter-type Luminance Meter and Uncertainty Budget for the Luminance Measurement with a CCD-Based Spectroradiometer a
luminance responsivity of filter-type luminance meter
0.53
0.53
0.53
combined standard uncertainty
0.53
0.54
0.55
photometric reading of spectroradiometer
1.7
2.1
3.9
luminance responsivity of spectroradiometer
1.8
1.8
1.8
combined standard uncertainty
2.4
2.8
4.2
CIE illuminant A, an LED-LCD, and a CCFL-LCD are used for the uncertainty evaluation.
Uncertainties of the LED-LCD and CCFL-LCD are the values for the red primaries.