Abstract: A light source or projector for a near-eye display includes a light source subassembly optically coupled to a waveguide concentrator. The light source subassembly may include several semiconductor chips each hosting an array of emitters such s superluminescent light-emitting diodes. The semiconductor chips may be disposed side-by-side, with their emitting sides or facets coupled to the waveguide concentrator, which provides a tight array of output light ports on a common output plane of the concentrator. The output diverging beams at the array of output light ports are coupled to a collimator, which collimates the beams and couples them to an angular scanner for scanning the collimated light beams together across the field of view of the display.

Abstract: In a method for controlling the column-by-column printing of a franking image in a postage meter machine, the image data are kept ready in encoded form and are converted into binary signals before a printing event for driving printer elements. Invariable and variable image contents are converted into binary data separately from one another, and the converted variable and invariable image data are combined during the printing of the franking image.