Abstract:
PROBLEM TO BE SOLVED: To estimate a spectrum accurately without being influenced by individual difference or measurement error of spectroscopic measurement equipment.SOLUTION: A transformation matrix is applied to a measured spectrum, to obtain a spectrum. The transformation matrix is determined as follows: linearly projecting a measured spectrum for a known beam (known-beam measured spectrum) in a linear space formed of a principal component vector of a spectrum measured by reference measurement equipment, to obtain a reference known-beam measured spectrum; and deciding an evaluation function, which is defined by linearly coupling a deviation between an estimated spectrum obtained by applying the transformation matrix to the reference known-beam measured spectrum and a known-beam spectrum (spectrum of the known beam) with dispersion of the component in the transformation matrix, so as to be an extreme value). No measurement is required for spectroscopic characteristics or sensitivity characteristics of spectroscopic measurement equipment, thereby preventing inclusion of errors or allowing the spectrum to be estimated accurately from the measured spectrum.
Abstract:
PROBLEM TO BE SOLVED: To provide a white LED which does not require such a significant white balance adjustment as could lead to reduction in display luminance on a liquid crystal panel and which is selected so that a chromaticity variation on panel display fits within a desired range.SOLUTION: When the chromaticity of the primary light of a combinatorial LED composed of an LED element emitting primary light and a phosphor excited by the primary light to emit secondary light greater in wavelength than the primary light is within a predetermined range, an LED classification device (21) classifies the LED as the one which is to be used for the backlight of a liquid crystal display device. A coefficient calculation unit (26) and a correction chromaticity calculation unit (27) calculate for all of LEDs to be classified a correction value for the chromaticity obtained by assuming that the primary light has transmitted the color filter of the liquid crystal display device, and subtract the correction value from obtained chromaticity individually for all of LEDs to be classified to correct the chromaticity. A chromaticity rank classification unit (28) classifies the LED by chromaticity rank on the basis of the corrected chromaticity.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and method for automatically adjusting a set of display settings.SOLUTION: At least one image sample is displayed at a first display according to display settings of the first display. Electromagnetic radiation generated from the first display is collected. The electromagnetic radiation includes first image data related to the at least one image sample at the first display. An image sample is displayed at a second display according to display settings of the second display. Electromagnetic radiation generated from the second display is collected. The electromagnetic radiation includes second image data related to the image sample at the second display. A margin of error is determined between the first image data and the second image data. The display settings of the second display are adjusted to reduce the margin of error.