Dental operating light with color correction
US5274535A · kind A · utility
14Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A color-correcting optical delivery system for a dental or medical operatory light in which hue is eliminated. Chromatic aberrations are corrected by canceling the diffractions in the system due to the different wavelengths of the various colors in the projected light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.