Color measuring apparatus
US6707553B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2000 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Mar 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/0272
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measurement controller is electrically connected with light emitting circuits and controls the light emission of light sources. A calculator calculates reflection characteristic measurement values of a measurement object corresponding to the respective illuminators. Undetermined coefficients of a Gaussian function stored in a memory are determined using the calculated reflection characteristic measurement values, and errors created by an angle of inclination of a normal to a surface of the measurement object with respect to a center axis of a main body are corrected using the Gaussian function whose undetermined coefficients are determined to obtain corrected reflection characteristic values. Since a measurement result is corrected according to the angle of inclination of the main body with respect to the object surface, this enables a high-precision colormetry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.