Image readout device with electronically variable spatial resolution
Abstract
An invention relating to the use of a standing acoustic wave charge storage device as an image readout device is described. A frequency f sub 1 was applied to the storage transfer device to create a traveling electric field in the device in one direction along a straight line. A second frequency f sub 2 was applied to the charge transfer device to create a traveling electric field opposite to the first traveling electric field. A standing wave was created. When an image was focused on the charge transfer device, light was stored in the wells of the standing wave. When the frequency f sub 2 is removed from the device, the standing wave tends to break up and the charges stored move to an electrode connected to an output terminal and to a utilization device where the received charges represent the image on the surface of the charge transfer device along a projection of said straight line.
- Publication:
-
National Aeronautics and Space Administration Report
- Pub Date:
- July 1981
- Bibcode:
- 1981nasa.reptX....B
- Keywords:
-
- Acoustics;
- Charge Transfer Devices;
- Imaging Techniques;
- Standing Waves;
- Charge Transfer;
- Display Devices;
- Electric Fields;
- Frequencies;
- Harmonic Generators;
- Patents;
- Electronics and Electrical Engineering