Imaging device
US5886353A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Jun 18, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4291
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An imaging device for producing images from electron-hole producing radiation. Electron-hole pairs are produced in a radiation absorbing layer comprised of a photoconductive material. This layer covers an array of metal oxide semiconductor pixel circuits which are incorporated into and on a crystalline semiconductor substrate. Each pixel circuit has a charge collecting pixel electrode, a capacitor connected to the electrode to store the charges and a charge measuring transistor circuit. A voltage source provides an electric field across the radiation absorbing layer between the pixel electrodes and a radiation transparent surface electrode covering the radiation absorbing layer. A data acquisition system acquires and stores data derived from charge measurements and in a preferred embodiment a computer computes images from the data. The image may be displayed on a monitor or printed out on a printer. Preferred embodiments provide images from x-ray, ultraviolet and visible light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.