Title:
【発明の名称】測色計
Document Type and Number:
Japanese Patent JP2003505687
Kind Code:
A
Abstract:
A colorimeter capable of calibrating color monitors, whether having cathode ray tube or liquid crystal (LCD) displays, is provided by a photometric array of photodetector and optical filter pairs. The filters include long-pass, edge filters which cover overlapping regions at the upper end of the visible spectrum and a filter which covers the entire visible spectrum. The outputs of the photodetectors are digitally synthesized to provide a response which mimics the response established by the Commission Internationale de 1'Eclairage (CIE) xyz (bar) functions almost perfectly. The response which is mimicked may be represented by the CIE color matching functions. The pairs and the associated components are mounted on a printed circuit board captured in a clamshell housing and having an array of apertures which define angularly constrained fields of view of a surface from which the light, to be colormetrically analyzed, emanates. The printed circuit board includes a field programmable gate array programmed to read data from the plurality of filter/detector pairs in parallel. The colorimeter is capable generally of measuring the color characteristics, especially the color temperatures of radiation radiating and reflecting bodies (sources), including so-called black bodies.
Inventors:
Balls, Jiyoung Ai
Eastman, JAM
Williams, Williams
Greenwald, Roger Jay
Hutchison, Robert Jay
Marc, Komik Kay
Eastman, JAM
Williams, Williams
Greenwald, Roger Jay
Hutchison, Robert Jay
Marc, Komik Kay
Application Number:
JP2001512261A
Publication Date:
February 12, 2003
Filing Date:
July 20, 2000
Export Citation:
Assignee:
Sea Buoy US Inc.
International Classes:
G01J1/06; G01J3/02; G01J3/51; G01J5/60; (IPC1-7): G01J3/51
Attorney, Agent or Firm:
Heiyoshi Odashima