Photo sensor array technology development
Abstract
The development of an improved capability photo sensor array imager for use in a Viking '75 type facsimile camera is presented. This imager consists of silicon photodiodes and lead sulfide detectors to cover a spectral range from 0.4 to 2.7 microns. An optical design specifying filter configurations and convergence angles is described. Three electronics design approaches: AC-chopped light, DC-dual detector, and DC-single detector, are investigated. Experimental and calculated results are compared whenever possible using breadboard testing and tolerance analysis techniques. Results show that any design used must be forgiving of the relative instability of lead sulfide detectors. A final design using lead sulfide detectors and associated electronics is implemented by fabrication of a hybrid prototype device. Test results of this device show a good agreement with calculated values.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1977
- Bibcode:
- 1977STIN...7812393R
- Keywords:
-
- Arrays;
- Infrared Imagery;
- Lead Sulfides;
- Photodiodes;
- Photoelectricity;
- Camera Tubes;
- Electro-Optics;
- Radiation Measuring Instruments;
- Viking Orbiter 1975;
- Instrumentation and Photography