X-ray imaging optical camera apparatus and method of use
US6507638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Jun 8, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4405
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic video camera apparatus is provided for focusing light rays from object plane proximate image intensifier of a medical x-ray imaging system onto an image plane proximate a light sensor. The electronic video camera includes a lens system located between the object and image planes to focus light rays from the object plane onto the image plane. The light rays at the object plane are representative of a patient image. An optical filter is located between the object and image planes and partially blocks light rays passing there through. The optical filter includes at least first and second filter regions having different opacity. The first and second filter regions are alignable with the lens system at different times to block differing first and second amounts of light rays, respectively, associated with differing first and second x-ray amounts transmitted at different times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.