INVESTIGATION OF PHOTOCONDUCTOR MATERIALS FOR A SOLID-STATE SONAR DISPLAY.
Abstract
An investigation to develop and construct a solid-state sonar display of variable persistence. The display device will utilize a layer of electroluminescent material to generate the output light and a control layer of photoconductive material which accepts an input illumination from a servo-driven 'wand.' An opaque enamel layer between the other two layers is used to prevent optical coupling between the display output light or ambient illumination and the control photoconductor. The required persistence characteristics were obtained with several of the photoconductor compositions tested. A number of materials were tested for the opaque enamel layer. Several of these displayed the required lack of interaction with the electroluminescent and photoconductor layers, as well as the required opacity. Test multielement display panels incorporating the most suitable photoconductor and opaque enamel materials were constructed. Evaluation of these panels indicated that display elements corresponding to both the smallest elements near the center of the display and the largest elements furthest from the center can be made with the required persistence range.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 1964
- Accession Number
- AD0605200