Multi-angle colorimeter
US7262854B2 · kind B2 · utility
16Cited by
1References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Sep 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a multi-angle colorimeter having an illumination system that illuminates a sample surface and a plurality of light receiving systems that receive reflected light therefrom, an illumination system for orientation error detection is provided that illuminates the sample surface from substantially close direction to the normal of the sample surface. Actual measured reflectance factor is corrected based on the specific approximation function obtained from the measured reflectance factor and detected orientation error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.