Detector array variable gain amplifiers for use in a laser imaging apparatus
US6331700A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Nov 15, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4312
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A detector array for a laser imaging apparatus comprises a plurality of detectors disposed in an arc around an opening in which an object to be scanned is disposed; and a variable gain integrator operably connected to each detector to accommodate the dynamic range of each detector. A method for collecting data for use in image reconstruction of an object being scanned is also disclosed, comprising the steps of providing a plurality of detectors disposed in an arc around the object to be scanned, including a variable gain amplifier connected to each detector; impinging a laser beam at a point on the object; integrating the input to each integrating amplifier at several time intervals; recording each output at each integration interval for use in image reconstruction; orbiting the detectors and the laser beam to a next point on a circle; and repeating steps until a complete circle has been traversed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.