Abstract: An illumination system including a lamp housing that may be mountable on a ceiling panel and a lamp supported within the lamp housing in a position to emit light from an opening in the housing. The lamp includes at least one LED that's removable through the housing opening.

Abstract: An assembly for mounting a light fixture in a hole in a ceiling panel and including an annular trim ring that's held upward against a lower surface of a ceiling panel by the light fixture to be mounted, such that the trim ring spans an annular gap between such light fixture and the ceiling panel hole. A top plate is carried by the ceiling panel across the ceiling panel hole and includes a top plate hole that receives the light fixture to be mounted such that the top plate spans an annular gap between the light fixture and the ceiling panel hole. A mount supports the light fixture on the top plate in a position holding the trim ring up against the lower surface of the ceiling panel.

Abstract: A method is provided for equalizing emitted light levels between light fixtures that use LEDs to produce light. The method includes gaining access to LED light fixtures from within a compartment in which the fixtures are mounted, and adjusting LED dimmers of the LED light fixtures to adjust the light emission levels of the LED light fixtures to generally match one another.

Abstract: An elevator interior illumination system for adjustably illuminating the interior of an elevator passenger compartment. The system may include a lamp housing mountable in an elevator and a lamp supported within the lamp housing in a position to emit light from the housing through an opening in the housing into a passenger compartment of the elevator. The lamp includes at least one LED that's removable from the assembly from within the elevator passenger compartment.

Abstract: A downward illumination assembly for directing light downward from the ceiling area of a room. A lamp housing has an open lower end positionable adjacent an opening in a ceiling panel. A power supply module is removably supported in an installed position on the housing. The power supply module carries a lamp socket such that, when the power supply module is in the installed position, a lamp plugged into the lamp socket is disposed in a position to radiate light out the lower end of the lamp housing and through an opening in a ceiling panel that the housing is mounted on. The power supply module is removable interiorly of the lamp housing through the open lower end of the lamp housing.

Abstract: A downward illumination assembly for directing light downward from the ceiling area of a room includes a lamp housing having a closed upper end, an open lower end disposed axially opposite the closed upper end, and a housing wall extending from around a periphery of the upper end to and defining the open lower end. The lower end is positioned adjacent an opening in a ceiling panel. A lamp is supported in a lamp socket within the lamp housing in a position to radiate light through the lower end of the housing and through the opening in the ceiling panel. A module is removably supported on the housing and carries the lamp socket. The lamp socket is removable from the lamp housing with the module to allow the lamp socket and/or associated wiring to be serviced or replaced without removing the lamp housing from the ceiling panel or disconnecting and lowering the ceiling panel from its support structure.