Dual standard gloss sensor
US6404502B2 · kind B2 · utility
6Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/57
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A single gloss sensor which can perform both DIN gloss measurement and DIN high gloss measurement, using the same hardware, and with minimal delay between the two measurements. The gloss sensor functions by directing light beams from a source to two different positions, either concurrently, or sequentially, between a position which measures gloss (75.degree) and a position which measures high gloss (45.degree). The gloss sensor also provides a reference light beam for correction of errors caused by the window glass, such as by dirt buildup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.