Spectrophotometer with selectable measurement area
US6061140A · kind A · utility
21Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1999 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | May 27, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/474
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrophotometer providing a sample measurement area of selectable size. The spectrophotometer includes a sphere defining a sample station, a lamp to illuminate the interior of the sphere and therefore the sample station, a color measurement engine including an aperture directed toward the sample station, and a measurement area size selector. The size selector includes a movable plate defining two or more holes of different sizes. The plate can be moved so that only one of the holes is aligned with the aperture to control the size of the measurement area sampled by the color measurement engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.