Vector lock-in imaging system
US4878116A · kind A · utility
25Cited by
3References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Jun 2, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/01
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The assembly (10) is a real-time imaging device for detecting radiation from an object field which is periodic in time. A video camera (14) detects emitted and reflected radiation from the object field (12) and produces a video signal comprising a series of pixels representing a frame of the image. The video signal is digitized (18) and received by a processor (16). The processor (16) averages the successive frames as in-phase images and quadrature images based on the periodicity of the object field to eliminate unsynchronous noise from the image and to display an image synchronous with the periodicity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.