Abstract: A mounting scheme designed to provide enhanced brightness and off-axis viewing of a discrete light emitting device is described. The device is placed within a cavity with reflecting side walls. Situated above the cavity is a contrast filter which has formed therein a plurality of spherical lenses. The lens arrangement is designed to produce an array of discrete images of the device separated by dark areas in order to increase the visibility of the device. The cavity side walls reflect onto the lenses light which would not normally be incident thereon thereby further enhancing visibility and permitting good off-axis viewing.

Abstract: A metallization scheme for providing an ohmic contact to n-type III-V semiconductors is described. A metallurgical combination including germanium and palladium is formed on the semiconductor surface either in the form of an alloy or discrete layers. The structure is then heated so that the metallic and semiconductor components interdiffuse to establish the ohmic contact without melting of the metal. One advantage of such a solid state process is the high degree of dimensional control of the contact which is attainable.