Abstract: Disclosed is a light assembly including a rotation ring including upper and lower surfaces, a mounting ring secured to a light pan and including upper and lower surfaces positioned over a portion of the rotation ring such that the portion of the rotation ring is sandwiched between the light pan and the mounting ring and such that the rotation ring is rotatable relative to the mounting ring, a light engine mounted on the rotation ring, and an adjustable rotation limiting mechanism that includes (a) a rotation stop platform provided on the mounting ring, the rotation stop platform including a moveable stop and (b) a rotation stop unit provided on the rotation ring, the rotation stop unit including a rotation stop arm. The rotation stop arm rotates with the rotation ring and contacts the moveable stop to prevent further rotation of the rotation ring with respect to the mounting ring.

Abstract: A light engine that includes light emitting diodes mounted on a printed circuit board, which in turn is attached to a heat sink. An optic assembly is positioned over the printed circuit board to direct the emitted light as desired. The light engine can be positioned. within the ceiling within the opening of a mounting frame. In some embodiments, the light engine is retained on the mounting frame such that it can be moved clear of the mounting frame opening.

Abstract: A light engine that allows for customization and easy adjustability of various properties of the distributed light. The light engine includes an optic holder having threads that engage with threads of a mounting ring to allow a lower reflector and/or a diffuser lens to be replaced without removing the entire light engine from the installation. The light engine also includes an upper reflector that interfaces with the optic holder so that the upper reflector also can be easily replaced without removing the entire light engine from the installation.

Abstract: A light engine that includes light emitting diodes mounted on a printed circuit board, which in turn is attached to a heat sink. An optic assembly is positioned over the printed circuit board to direct the emitted light as desired. The light engine can be positioned. within the ceiling within the opening of a mounting frame. In some embodiments, the light engine is retained on the mounting frame such that it can be moved clear of the mounting frame opening.