Reflectometer
US6952263B2 · kind B2 · utility
9Cited by
18References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2003 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4738
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention comprises reflectometer for detecting and measuring subtle changes in color and shade of color. In general, a pulsating light source illuminates a target surface which possesses a certain color and shade of color. An optical detection circuit synchronously detects light that is reflected from the target surface and generates an output signal whose voltage is indicative of the color and shade of the target surface. This voltage is then processed to make an evaluation and identification of any measurable quantity or quality that is represented by the detected color or shade of color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.