Optics: measuring and testing – By shade or color – Tristimulus examination
Reexamination Certificate
2008-05-06
2008-05-06
Lauchman, Layla G. (Department: 2877)
Optics: measuring and testing
By shade or color
Tristimulus examination
C356S406000, C356S407000, C356S425000, C250S226000
Reexamination Certificate
active
07369239
ABSTRACT:
A color luminance meter1is provided with a polychrometer4as a spectral optical system including a light receiving sensor array43, a signal processing circuit5and an operation control unit6. The operation control unit6carries out calculations to obtain characteristics of a measurement light based on a specified spectral responsitivity, using light reception signals and specified weighting coefficients. The spectral responsitivities of light receiving sensors constructing the light receiving sensor array43are selected such that B≧5 nm and A/B lies within a range of 1.5 to 4.0 when A, B denote the half power band width of the spectral responsitivities and a center wavelength interval of the spectral responsitivities. Accordingly, there can be provided a light measuring apparatus capable of maximally suppressing errors to highly precisely measure color luminance values and the like even in a measurement of a light lying in a narrow band such as a monochromatic light.
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patent: 6462819 (2002-10-01), Terauchi et al.
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Notice of Reasons for Rejection for Japanese Patent Application No. 2005-000583 mailed Mar. 6, 2007 with English translation, 7 pages.
Imura Kenji
Nagashima Yoshiyuki
Shimizu Shinji
Tsurutani Katsutoshi
Brinks Hofer Gilson & Lione
Konica Minolta Sensing Inc.
Lauchman Layla G.
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