Color measurement device and color measurement method
US7034942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2002 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Oct 3, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method, includes illuminating a first portion of a colored region with first light from a gas discharge tube and generating a first output using a diffuse reflection of the first light from the first portion. The method further includes illuminating a second portion of the colored region with second light from a first solid state lamp and generating a second output using a diffuse reflection of the second light from the second portion. Additionally, the method includes illuminating a third portion of the colored region with third light from a second solid state lamp and generating a third output using a diffuse reflection of the third light from the third portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.