Method and apparatus for protection from high intensity light
US6511422B1 · kind B1 · utility
25Cited by
13References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2002 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Apr 30, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/0655
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus where the output from a high intensity light source is controlled so that whenever the output is not directed at a surface, the light source output intensity is automatically reduced to a safe level. This is achieved by monitoring the reflected light from a surface and when this reflection indicates that the light source is not directed at a surface, the light intensity is reduced to a safe level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.