Abstract: A method for bonding infrared transparent materials by placing a polymer comprising at least one chalcogenide element and crosslinking moieties between infrared-transparent optical elements and applying heat, pressure, or both. The crosslinking moieties may be organic, inorganic, or both. Also disclosed is the related bonded assembly comprising infrared transparent optical elements.

Abstract: A laser-guided cutting assembly for severing objects includes a work surface. A severing implement is operationally coupled to the work surface. The severing implement comprises at least one blade that is configured to cut an object that is positioned on the work surface. A display and a measurer are coupled to the work surface. The measurer is laser-enabled and is operationally coupled to the display. The measurer is configured to measure a first distance between the measurer and the blade, and to measure a second distance between the measurer and an end of the object that is positioned between the blade and the measurer. A portion of the object that is positioned between the blade and the measurer has a severable length equal to the first distance minus the second distance. The display is configured to report to a user the severable length of the object.

Abstract: A laser-guided cutting assembly for severing objects includes a work surface. A severing implement is operationally coupled to the work surface. The severing implement comprises at least one blade that is configured to cut an object that is positioned on the work surface. A display and a measurer are coupled to the work surface. The measurer is laser-enabled and is operationally coupled to the display. The measurer is configured to measure a first distance between the measurer and the blade, and to measure a second distance between the measurer and an end of the object that is positioned between the blade and the measurer. A portion of the object that is positioned between the blade and the measurer has a severable length equal to the first distance minus the second distance. The display is configured to report to a user the severable length of the object.

Abstract: A room security system for providing an occupant of a room information as to the number of times a person has entered and exited the room. The security system displays a visual numerical count. The numerical count allows a viewer to determine if there has been an unauthorized entry and exit when the room has been thought to be unoccupied. The security system includes a counter housing for mounting on a door frame. The door frame surrounding a door. The counter housing includes a housing window opening in a front of the housing. Also, the counter housing includes a mechanical counter received therein. The counter is incased inside the housing using an epoxy filler material to prevent the counter from being removed, reset or tampered with while installed inside the housing. The mechanical counter includes a display window with a series of counter numbers. The counter also includes an outwardly extending trigger.