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http://dx.doi.org/10.3807/HKH.2007.18.1.001

Design of Color Matching Filters and Error Analysis in Colorimetric Measurement of LCD Flat Panel Display Using the Filters  

Jeon, Ji-Ho (Dept. of Applied Optics and Electromagnetics, Hannam University)
Jo, Jae-Heung (Dept. of Applied Optics and Electromagnetics, Hannam University)
Park, Seung-Nam (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Park, Chul-Woung (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Lee, Dong-Hoon (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Jung, Ki-Lyong (Division of Physical Metrology, Korea Research Institute of Standards and Science)
Publication Information
Korean Journal of Optics and Photonics / v.18, no.1, 2007 , pp. 1-7 More about this Journal
Abstract
Filter colorimeters have a set of spectral bands for which spectral responsivity is the same as the color matching function defined by CIE (Commission Internationale de I'Eclairage). We have designed a set of color matching function filters denoted by $\bar{x}-filter,\;\bar{y}-filter,\;and\;\bar{z}-filter$. Because the $\bar{x}-function$ has two transmission bands, two $\bar{x}-filters$ are designed to cover the $\bar{x}-function$. To design the filters, we developed a nonlinear least square fit program which determines the thickness of the color glasses by minimizing its spectral mismatch value ($f{_1}) to below 3 %. The design has been validated by fabrication of the $\bar{y}-bar$ filter, of which $f{_1} was measured to be 2.8 %. Considering a LCD flat panel display as a device under test, we have calculated the systematic error of the colorimetric measurement using the designed filters.
Keywords
Color-matching function; Spectral mismatch value; Color difference; Color gamut;
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