Browse Prior Art Database

Original Publication Date: 1977-Feb-28
Included in the Prior Art Database: 2004-Mar-29

Publishing Venue

Xerox Disclosure Journal


An array of synchronously coupled waveguide pairs (#1 and #2) is provided on a common substrate. Each waveguide pair includes its own associated electrode. A voltage signal (e.g. 10 volts) from an electronic switching cir-cuit selectively applied to the upper electrodes causes a shift of the light beam from one waveguide to the other. In one embodiment the array is used as an output scanner. A cylindrical lens couples a light source into a common portion of the lower waveguides-. The light beam travels down the lower waveguides and is reflected or absorbed resulting in no light output. Conversely, the light beam can be switched into selected ones of the upper waveguides and coupled out as plural spots of light depending upon activation of the appropriate electrodes.