The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2008
Filed:
Aug. 24, 2005
Yoshiyuki Nagashima, Sakai, JP;
Kenji Imura, Toyohashi, JP;
Shinji Shimizu, Sakai, JP;
Katsutoshi Tsurutani, Osaka, JP;
Yoshiyuki Nagashima, Sakai, JP;
Kenji Imura, Toyohashi, JP;
Shinji Shimizu, Sakai, JP;
Katsutoshi Tsurutani, Osaka, JP;
Konica Minolta Sensing, Inc., Osaka, JP;
Abstract
A color luminance meteris provided with a polychrometeras a spectral optical system including a light receiving sensor array, a signal processing circuitand an operation control unit. The operation control unitcarries 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 arrayare 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.