Abstract: An optical overlay filters radiation striking the overlays at a non-planar incidence angle while passing and focusing in-plane signals. In embodiments, an optical overlay comprises an inner wall, an outer wall, an upper wall, and a lower wall. The inner wall may be formed to include a planar surface. The outer wall may be spaced apart from the inner wall and may be formed to include a convex surface. The combination of the planar surface of the inner wall and the convex surface of the outer wall may form a plano-convex lens. The upper wall may include a first plurality of ridges that are generally parallel to the inner wall. The lower wall may include a second plurality of ridges that are generally parallel to the inner wall. The combination of the first plurality of ridges and the second plurality of ridges may form an optical filter.

Abstract: An optical overlay comprises an inner wall, an outer wall, an upper wall, and a lower wall. The inner wall may be formed to include a planar surface. The outer wall may be spaced apart from the inner wall and may be formed to include a convex surface. The combination of the planar surface of the inner wall and the convex surface of the outer wall may form a plano-convex lens. The upper wall may include a first plurality of ridges that are generally parallel to the inner wall. The lower wall may include a second plurality of ridges that are generally parallel to the inner wall. The combination of the first plurality of ridges and the second plurality of ridges may form an optical filter.

Abstract: An improved device and method for mounting an avionic system is shown. The design provides varying locations of key components, which allows a single mounting system to be used with several varieties and configurations of aircraft within the crowded confines of an instrument panel. Ranges of flexibility with this system include the ability to arrange modules horizontally, and the ability to locate the display unit vertically. The multi-dimensional mounting flexibility of the mounting system shown allows electronic modules to be mounted in close proximity to a display unit, which greatly increases accessibility of the modules over prior configurations where modules were housed in the nose of the aircraft, the rear of the aircraft, or other remote locations. Installation, repair, and replacement are all greatly simplified with this configuration.

Abstract: An equipment module, a module retention device, as well as a system and a method for mounting equipment modules are disclosed. The modules can be installed without tools, using the retention device. Each module includes a chassis unit which slides into a unit rack, which is in turn attached to a mounting frame. The entire assembly may be mounted to an instrument panel. The module retention device is attached to the chassis unit, typically engaging a slot on the rack. A rotating fastener secures the retention device in the engaged position. The method includes inserting an electronic module into the open end of a unit rack, sliding an engagement lug attached to a cam lever into engagement with a slot on the rack, electrically coupling a connector on the module with a connector on the rack, and attaching the rack to the mounting frame.

Abstract: An improved device and method for mounting an avionic system is shown. The design provides varying locations of key components, which allows a single mounting system to be used with several varieties and configurations of aircraft within the crowded confines of an instrument panel. Ranges of flexibility with this system include the ability to arrange modules horizontally, and the ability to locate the display unit vertically. The multi-dimensional mounting flexibility of the mounting system shown allows electronic modules to be mounted in close proximity to a display unit, which greatly increases accessibility of the modules over prior configurations where modules were housed in the nose of the aircraft, the rear of the aircraft, or other remote locations. Installation, repair, and replacement are all greatly simplified with this configuration.

Abstract: An electronic equipment module includes a symmetrical casting with two chassis units. Each unit includes a mounting recess to receive a circuit assembly, separated by a cover applied to either unit, or both. The module is normally mounted to a unit rack, and typically has a removably attachable, re-orientable keyed surface which mates with another keyed surface on the rack. A mounting system includes a unit rack coupled to at least one electronic equipment module and a mounting frame. A method of mounting an electronic equipment module includes inserting the module into an open end of a unit rack, electrically coupling connectors attached to the module and the rack, securing the module to the rack, and attaching the rack to a mounting frame. The module can be secured to the rack by engaging a cam lever attached to the module.

Abstract: An equipment module, a module retention device, as well as a system and a method for mounting equipment modules are disclosed. The modules can be installed without tools, using the retention device. Each module includes a chassis unit which slides into a unit rack, which is in turn attached to a mounting frame. The entire assembly may be mounted to an instrument panel. The module retention device is attached to the chassis unit, typically engaging a slot on the rack. A rotating fastener secures the retention device in the engaged position. The method includes inserting an electronic module into the open end of a unit rack, sliding an engagement lug attached to a cam lever into engagement with a slot on the rack, electrically coupling a connector on the module with a connector on the rack, and attaching the rack to the mounting frame.