Apparatus and method for measuring optical characteristics of an object
US6271913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Dec 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/4747
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Optical characteristic measuring systems and methods for determining the color or other optical characteristics of teeth comprising a probe body (2) wherein the probe provides light to the surface of the object/tooth (20). Perimeter receiver fiber optics (102) are spaced apart from a source fiber optic and receive light from the surface of the object/tooth (20) being measured. Light from the perimeter fiber optics pass to a variety of filters. The system utilizes the perimeter receiver fiber optics (102) to determine information regarding the height and angle of the probe with respect to the object/tooth being measured wherein the numerical apertures of the receiver fiber optics (102) are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.