Abstract: Convection cooling channels are provided by means of an at least partially enclosed open cell metal foam structure for removing heat from equipment. In particular, an electronic equipment box is provided having walls comprising sections of open cell aluminium foam, clad with aluminium, through which air or other types of coolant may pass to remove heat from heat-generating components mounted thereon. Other types of equipment, such as electric motors, may be surrounded by customised sections of open cell metal foam, appropriately clad, through which a coolant may be channeled. The foam cell size may be adjusted according to desired coolant flow rate and weight considerations. Convection cooling structures may be combined with latent heat storage bodies comprising similar open cell metal foam structures containing wax, operating in tandem with the present convection cooling structures in a heat management solution.

Abstract: A method is provided for laminating optical substrates and in particular for manufacturing a thin combiner for an optical display that preserves the flatness of the component parts and ensures an even separation of layers, in particular an optical substrate and a thin cover plate that is to be bonded to the substrate. In the method, spacer particles in a predetermined size range are included within a glue layer at a required density to ensure cover plate flatness and uniform separation during assembly.