Apparatus and a method for determining the color stimulus specification of translucent objects
US7312874B2 · kind B2 · utility
5Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Oct 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The Apparatus for determining the color stimulus specification of a translucent object, for example of a tooth, comprises an illumination device as well as an image capture device. For illuminating the object under test with light in different wave length portions, the illumination device comprises an LED array with a plurality of sequentially energizable light emitting diodes. Several different types of light emitting diodes are provided, each emitting light in a different wave length portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.