Abstract: An integrated optoelectronic chip 116 produces multiple modulatable outputs in a read write head. An array of light guides in a light guide switchyard has some terminations at output apertures and some at beam dumps within the read/write head. The beam dumps absorb and dissipate any light conveyed to them. The beam switches allow control of the direction of light emitted from an on-board laser 106 which enters the array of light guides. By switching between a respective beam dump and a respective output aperture, the beam switch is used to modulate the output from the aperture. The light emitted can be imaged onto a target surface by a lens system or a single holographic element. In an alternative embodiment, instead of dumping the light to a beam dump, it can also be directed away from the target surface. An optoelectronic chip for modulating multiple outputs can be formed without an embedded laser.

Abstract: An optical scanner employs a scanning head provided with an array of light-emitting apertures. According to one embodiment, for example, light is directed through wave-guides or optical fibers, embedded in the scanning head, to the apertures. The head is oscillated by a micro electromechanical systems (MEMS) motor. This generates a rapidly sweeping array of light spots on the scanned surface. Light is projected to a scanned surface and collected through the same apertures. In an alternate embodiment, scanning head is provided with separate optical fibers, one for each light spot. Each fiber is vibrated by a separate MEMS motor and individually oscillated in synchrony.

Abstract: An optical scanner employs a cantilever-mounted optical fiber within a micro electro-mechanical systems (MEMS) motor. In an embodiment, the fiber is sandwiched between two piezoelectric elements to form a unitary bimorph. The bimorph is excited with opposite polarity to cause it to bend rapidly in a plane. The light collected from the tip is projected to a small spot on the scanned medium. The bimorph is oscillated by applying an alternating voltage across the piezoelectric elements which causes the bimorph to bend back and forth at high rates. A medium is passed in a direction at least partly orthogonal to the direction of oscillation of the bimorph so that spot, rapidly sweeping across the surface of the medium, scans the surface. To write information on the medium, a source sufficiently intense, is modulated and applied to the fiber. To read information, a sufficiently intense source is continuously applied to the fiber and a detector used to pick up light returned from the medium surface.

Abstract: A method, device and system for utilizing a pixelized ungated linear array of field emitters and an integrated electrode-media surface to either detect the presence of charge on the surface in a given two-dimensional pattern, or to deposit charge on the surface in a desired two-dimensional pattern. The methods, devices and systems disclosed are particularly useful in the arts of printing, scanning and copying. In one embodiment designed for printing, a pixelized surface may be utilized to receive a charge pattern from the ungated linear field emitter array. In one embodiment designed for scanning, a pixelized transfer sheet may be utilized to transfer a two-dimensional charge pattern from a photostatic surface thereto for sensing and detection by the ungated linear field emitter array.