Abstract: An augmented reality (AR) system that includes a viewing device and a power pack linked to the viewing device, with the power pack including a primary orientation sensor, an orientation engine, and an AR engine. In some embodiments, the primary orientation sensor is operable to measure orientation of the power pack, the orientation engine is operable to calculate an orientation of the viewing device based on a relationship between the power pack and the viewing device, and the AR engine is operable to generate AR data that varies in response to the calculated viewing device orientation and to determine or update the relationship between orientations of the power pack and the viewing device, for example, by polling a secondary orientation sensor in the viewing device. Other embodiments, related power packs, and methods are also disclosed.

Abstract: A flexure assembly operable to control variation of the displacement between a detector and a lensing arrangement along the optical axis of a camera so as to vary camera focus, and a camera incorporating such a flexure assembly. In some embodiments, the flexure assembly provides for precise control of linear displacement along the optical axis and minimal displacement along other axes or modes. A flexure assembly can additionally be relatively lightweight in construction. In some embodiments, the flexure assembly comprises one or more flexure elements adapted to permit movement along a movement axis and resist movement along axes other than the movement axis. In some embodiments, the movement axis of the or each flexure element is aligned with the optical axis of a corresponding lensing assembly.

Abstract: An augmented reality (AR) system that includes a viewing device and a power pack linked to the viewing device, with the power pack including a primary orientation sensor, an orientation engine, and an AR engine. In some embodiments, the primary orientation sensor is operable to measure orientation of the power pack, the orientation engine is operable to calculate an orientation of the viewing device based on a relationship between the power pack and the viewing device, and the AR engine is operable to generate AR data that varies in response to the calculated viewing device orientation and to determine or update the relationship between orientations of the power pack and the viewing device, for example, by polling a secondary orientation sensor in the viewing device. Other embodiments, related power packs, and methods are also disclosed.

Abstract: A flexure assembly operable to control variation of the displacement between a detector and a lensing arrangement along the optical axis of a camera so as to vary camera focus, and a camera incorporating such a flexure assembly. In some embodiments, the flexure assembly provides for precise control of linear displacement along the optical axis and minimal displacement along other axes or modes. A flexure assembly can additionally be relatively lightweight in construction. In some embodiments, the flexure assembly comprises one or more flexure elements adapted to permit movement along a movement axis and resist movement along axes other than the movement axis. In some embodiments, the movement axis of the or each flexure element is aligned with the optical axis of a corresponding lensing assembly.

Abstract: A digitally operated printer, particularly a laser printer, has a control system which controls supply of operational signals to the printer from a signal source. The control system incorporates a converter which converts groups of input signals into larger groups of operational signals. The operational signals are generated in correspondence with coded information carried by the input signals, e.g. by reference to a store of predetermined operational signals. The larger groups of signals are fed at a faster rate than the input signals, so that the effect is to enhance the grey tones produced by the printer.