Measuring head
US4865456A · kind A · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Aug 31, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8803
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring head for the determination of the optical reflectance properties of color measuring fields co-printed with color sheets includes an optical illuminating device having two Mangin mirrors and an aplanar system located in alignment with the Mangin mirrors in a central opening. The light emitted by a light source and reflected by the measuring area arrives in a glass rod and is fed through an optical measuring device into a light waveguide, through which the reflected light is fed into a spectrometer for spectral analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.