EP 1643224 B8 20090218 - Method and apparatus for improved colorimetry
Title (en)
Method and apparatus for improved colorimetry
Title (de)
Verfahren und Vorrichtung für verbesserte Kolorimetrie
Title (fr)
Procédé et dispositif de colorimétrie améliorée
Publication
Application
Priority
- US 61425704 P 20040930
- US 65304805 P 20050215
Abstract (en)
[origin: EP1643224A2] A colorimeter method and apparatus is described. The colorimeter includes a plurality of sensors/filter systems with non overlapping spectral responses, adequate for providing data capable of translation into standard coordinates system such as, CIE XYZ, CIE L* a* b*, or CIE Luv, as well as non-standard operable coordinate systems. The field of view of the colorimeter is chosen to closely track the response of the human eye using an optical path configured to select and limit the field of view in a manner that is insensitive to placement of the colorimeter on the source image. The optical path from the source image to the sensor is configured to select preferred light rays while rejecting undesirable light rays to maximize the signal/noise ratio. A rearward facing sensor channel is included to simultaneously measure ambient light impinging on the source image and feedback means to provide status and/or change of information.
IPC 8 full level
G01J 3/02 (2006.01); G01J 3/51 (2006.01); G01N 21/25 (2006.01)
CPC (source: EP)
G01J 3/02 (2013.01); G01J 3/46 (2013.01); G01J 3/0291 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
EP 1643224 A2 20060405; EP 1643224 A3 20060607; EP 1643224 B1 20081029; EP 1643224 B8 20090218; DE 602005010644 D1 20081211; DE 602005027803 D1 20110616
DOCDB simple family (application)
EP 05021441 A 20050930; DE 602005010644 T 20050930; DE 602005027803 T 20050930