LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

A lighting apparatus for a motor vehicle, wherein a first structural component of the lighting apparatus is connected to a second structural component of the lighting apparatus, and the connection between the first and second structural components is formed by a twist-on connection. The second structural component comprises at least two coupling elements that fit over, in particular at the perimeter of, the first structural component in the fully assembled state, at least in part, and the first structural component ends up in this engaged position, in particular on the perimeter thereof, through a rotation in relation to the second structural component.

Apparatus and method for deployment of fixtures. The apparatus may include an inground fixture. The apparatus may include a landscape lighting fixture. The apparatus may include a fixture housing. The apparatus may include a light engine frame. The light engine frame may be inserted into the fixture housing. The light engine frame may be rotated about a central axis of the fixture housing. The light engine frame may support a light emitting diode (LED) light source. The light engine frame may support a light source inclination retainer. The light source inclination retainer may incline the LED light source to different angles. The light engine frame may support a heat exchange assembly. The heat exchange assembly may include heat exchange fins.

LED lighting apparatus defining a longitudinal axis and including a lens, an element holder for holding the lens and having at least one guide pin, a fixture body for receiving the element holder and having at least a first plurality of slots extending transverse the longitudinal axis of the apparatus. The guide pin is received in at least one of the slots corresponding to a first beam angle of the lens, the element holder being configured to be selectively movable to one of the plurality of slots for selecting a projection beam angle of the LED lighting apparatus. A second plurality of slots is provided extending along the longitudinal axis and connecting the horizontal slots, such that the guide pin is repositioned from one of the first slots to another of the first slots by traveling along one of the second plurality of slots.

LED related lighting methods and apparatus are described. Various features relate to water tight light fixtures. Some of the fixtures are spotlights while other fixture are intended for in ground use. The light fixtures in at least some embodiments include power control features. In spotlight embodiments beam angle and power or light output can be controlled without opening the light assembly or compromising the water tight seals which also protect against dirt. In ground embodiments support tilt angle setting which allow a user to set the light fixture to one or more tilt angles. Beam angle can also be changed in some embodiments as well as power control. Beam angle, power control and tilt angle adjustments are supported in some embodiments but need not be supported in all embodiments with some embodiments using one or more of the described features but not all features.

A luminaire (1) comprises lamp holder (3) and a lamp (2) mountable to the lamp holder (3). The lamp holder (3) has a body (6) with a cylindrical inner surface (8) and protuberances (1) located around the cylindrical inner surface (8). The lamp has a housing (15) with faces (21) and groups of grooves (22a, 22b, 22c) around an outer surface. Each group of grooves (22a, 22b, 22c) is spaced away from a first end of the housing (15) by a different distance. The faces (21) facilitate insertion of the housing (15) into the body (6) at a first orientation by providing space for the protuberances (10) between the housing (15) and the cylindrical inner surface (8). The lamp (2) is rotatable in the lamp holder (3) from a first orientation to a second orientation in which the grooves of one of the groups of grooves (22a, 22b, 22c) accommodate the protuberances (10) to secure the lamp (2) to the lamp holder (3). The different groups of grooves (22a, 22b, 22c) secure the lamp (2) in different axial positions relative to the lamp holder (3). This allows optical elements (23, 24) of different thicknesses to be inserted between the lamp (2) and the lamp holder (3).