Abstract: An open type luminaire lens including a non-circular reflective lens having a metalized exterior surface and a prism section, the non-circular reflective lens having a shape generally defined by the combination of two parabolas, the prism section including and array of external reflecting prisms of varying predetermined shapes and varying predetermined sizes for use in providing a desired efficient light distribution.

Abstract: An optical interface for coupling a refractor and a reflector in a luminaire assembly includes a flange having an inner surface and an outer surface, the outer surface having reflecting means and disposed adjacent an air gap, the flange having a shape which works in concert with the reflector and is adapted to be affixable to the reflector and the refractor.

Abstract: A modular self-diagnostic assembly for controlling diagnostic, charge and transfer functions necessary to operation of fluorescent emergency lighting packs also referred to as inverters or fluorescent battery packs used particularly in emergency lighting systems such as are configured for operation with fluorescent lighting fixtures and the like. Self-test/self-diagnostic circuitry contained within a module separate from an emergency lighting pack functions as an add-on accessory to existing emergency lighting packs without need for modification of structure or circuitry of the lighting pack. The self-diagnostic module of the invention connects electrically and mechanically to the lighting pack through appropriate leads terminated by an appropriate header and further connects mechanically and electrically to a test switch module through appropriate leads terminated by an appropriate header.

Abstract: A manually operable test switch useful for testing of inverter units installed in fluorescent lighting fixtures, the inverter units providing an emergency lighting capability to the lighting fixtures on interruption of usual mains AC power and the test switch providing an ability to test the condition of the inverter units during normal maintenance activity. Operation of the test switch shorts an LED carried by a housing of the switch, the housing also being formed integrally with an adjustable toothed connector for mounting the test switch to a portion of the lighting fixture.