Dental light filter
US6280188A · kind A · utility
Inventor
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/202
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-filtering apparatus is provided for attachment to a dental lamp. The apparatus includes a filter that blocks out light having a 350 to 550 nanometer wavelength. A spring-loaded roller is configured to carry the filter. A second roller may also be provided. A window-like frame is attached to a center of rotation of either the spring-loaded roller or the second roller. A tab is attached to the filter and is configured to place the filter in front of the dental lamp when the tab is pulled by a user. Essentially, the apparatus functions in a manner similar to a window shade for alternately blocking out and allowing light to shine on either a composite resin or another light-curable material that is being placed in a dental patient's mouth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.