Abstract: Systems and methods for modular projection that enable a flexible and extendible modular picoprojector system with multiple projector modules and application modules that may be interconnected in a variety of ways for various applications and use models. The systems and methods include connectors and interfaces that enable rapid design of various types of modules for a modular picoprojection system. The systems and methods also include orientation and compatibility features that may be employed in a modular picoprojection system to control connections of various modules with specific features and functions.

Abstract: Systems and methods for modular projection that enable a flexible and extendible modular picoprojector system with multiple projector modules and application modules that may be interconnected in a variety of ways for various applications and use models. The systems and methods include connectors and interfaces that enable rapid design of various types of modules for a modular picoprojection system. The systems and methods also include orientation and compatibility features that may be employed in a modular picoprojection system to control connections of various modules with specific features and functions.

Abstract: A compressor for compressing a gas comprises an impeller wheel (1) mounted within a housing (2) defining an inlet and an outlet (6). The inlet comprises an outer tubular wall (7) extending away from the impeller wheel in an upstream direction and forming a gas intake portion (8) of the inlet, and an inner tubular wall (9) of diameter D extending away from the impeller wheel in an upstream direction within the outer tubular wall (7) and defining an inducer portion (10) of the inlet. An annular gas flow passage (11) is defined between the inner and outer tubular walls (9, 7) and has an upstream end and a downstream end separated by a length L1 measured along its axis. The upstream end of the annular passage (11) communicates with the intake or inducer portions of the inlet through at least one upstream aperture and at least one downstream aperture (13) communicates between a downstream portion of the annular flow passage (11) and the impeller.

Abstract: A media hold down system includes electrodes configured to create an electric field at a surface and a vacuum source configured to create a vacuum at the surface.

Abstract: A compressor for compressing a gas comprises an impeller wheel (1) mounted within a housing (2) defining an inlet and an outlet (6). The inlet comprises an outer tubular wall (7) extending away from the impeller wheel in an upstream direction and forming a gas intake portion (8) of the inlet, and an inner tubular wall (9) of diameter D extending away from the impeller wheel in an upstream direction within the outer tubular wall (7) and defining an inducer portion (10) of the inlet. An annular gas flow passage (11) is defined between the inner and outer tubular walls (9, 7) and has an upstream end and a downstream end separated by a length L1 measured along its axis. The upstream end of the annular passage (11) communicates with the intake or inducer portions of the inlet through at least one upstream aperture and at least one downstream aperture (13) communicates between a downstream portion of the annular flow passage (11) and the impeller.