Lighting module for an automobile, comprising a reflector having at least two surface portions, at least one of the surface portions being movable, and at least two light sources, each light source being associated with one of the surface portions in order to generate a primary light beam by reflection of the light output from said source. The lighting module is configured for a surface portion to be movable and to have a movement which causes a variation in the coverage between the light beams generated by the lighting module.

A light-emitting diode (LED) luminaire adopts LED light sources (LEDs) and a corrugated light exit window. Light rays emitting at different angles from the LEDs launch onto the corrugated light exit window with numerous light images of the LEDs. The light images are so heavily overlapped that smooth out hot spots with dark spots, an effect of averaging, creating a uniform illumination output. The LED luminaire is capable of averaging white light emissions from a plurality of LEDs, mixing light emissions from various white LEDs at different correlated color temperatures (CCTs), or mixing light emissions from various white LEDs at a specific CCT with emissions from LEDs having saturated colors, rendering a uniform illumination with a consistent intensity or color hue within viewing angles.

A lighting device may include a channel-shaped housing having two ends with a main axis of the housing extending between the ends, a pair of mounting fixtures for a pair of light radiation sources within the housing with the light radiation sources radiating light radiation in opposite directions along the main axis, and a pair of reflectors each facing a respective one of the mounting fixtures to receive light radiation along the main axis and reflect it to the outside of the housing.

An optical device includes: a plurality of walls including at least a first wall and a second wall, wherein the plurality of walls are concentrically disposed around a first axis so as to be multi-stepped along the first axis, wherein each of the plurality of walls expands outward in a sector shape around the first axis at a predetermined central angle θ and includes an outer circumferential surface, a reflective curved surface at the outer circumferential surface, a first side end portion, and a second side end portion; a first reflective surface meeting the first side end portions of the walls; and a second reflective surface meeting the second side end portions of the walls. The first reflective surface and the second reflective surface meet each other on the first axis.

An optical device includes: a light-transmissive member having a first reflective surface configured to reflect, to an arc-shaped first region around a first axis, first light incident along the first axis and having a light distribution characteristic with an optical axis parallel to the first axis; and a reflector having: a second reflective surface and a third reflective surface intersecting each other on the first axis and disposed such that the first reflective surface is located between the second reflective surface and the third reflective surface; and a fourth reflective surface disposed between the second reflective surface and the third reflective surface to reflect the first light to the arc-shaped first region around the first axis.

A lamp for a vehicle includes a light emitting unit for generating light, and an optical unit for forming a predetermined light irradiation pattern by outputting the light incident from the light emitting unit through a plurality of optical modules each including an incident lens and an output lens. The light emitting unit includes a light source unit, and a plurality of reflectors arranged in a left-right direction to allow the light generated from the light source unit to be reflected to the optical unit, and the optical unit includes a plurality of areas for outputting the light incident from the plurality of reflectors.

A lighting device includes a first light emitting part including a first light source part and a first optical part that includes a first reflecting part and a second reflecting part. A first direction from the first reflecting part to the second reflecting part crosses a second direction from the first light source part to the second reflecting part. A direction from the first light source part to the first reflecting part is along a first plane which includes the first direction and the second direction, and crosses the second direction. A distance between the first reflecting part and the first light source part is larger than a distance between the second reflecting part and the first light source part. A light distribution angle of a first-reflecting-part light in the first plane is larger than the light distribution angle of the second-reflecting-part light in the first plane.

An apparatus, system, and related methods for light reflection with grooved surfaces are provided. The light reflection apparatus with grooved surfaces has a first surface with a quantity of grooves therein. A second surface has a quantity of grooves therein. The grooves in the second surface have a different angular shape, different size, different angular orientation, or a different unit density than the grooves in the first surface. At least one light source emits light on the first and second surfaces. As a direction of the emitted light changes relative to the first and second surfaces, the quantity of grooves in the first or second surface reflect the light independently of one another.

An integrated ceiling device includes a housing retaining an electronic assembly, a heat sink having a central opening, a light source coupled onto the heat sink, the housing is coupled with and disposed at least partly above the heat sink, and a central vertical axis of the housing aligns or is in proximity with the central opening of the heat sink.

A combination for illuminating the interior of a building comprises a fixture and a retrofit kit. The fixture has a base attached to a building ceiling, the fixture having a first tombstone, and a second tombstone. The first and second tombstones are configured to receive between them a fluorescent light tube. The retrofit kit is connected to the base. The retrofit kit includes a light panel, the light panel having a first side facing the fixture and an opposite second side. The light panel resides between the first tombstone and the second tombstone, and the fixture resides above the light panel. The combination is devoid of a fluorescent light tube. The base and the light panel define between them a raceway. A light emitting diode is disposed on the second side of the light panel.