A knob for an appliance includes a handle. A light guide defines a recess. At least a portion of the handle is received within the recess of the light guide. A bezel is disposed over at least a portion of the light guide. The handle is rotatable relative to the bezel. A light emitter is disposed within the bezel. The light emitter is operable to emit light into the light guide. At least a portion of an interior surface of the light guide is textured, and an exterior surface of the light guide is smooth.

A headphone includes a housing, a light emitting device and a printed circuit board. The light emitting device is mounted in the housing. The light emitting device includes a luminous unit, and a light guiding unit disposed close to the luminous unit. The light guiding unit has a base portion, an incident surface formed at an inner surface of an inner end of the base portion, an emitting surface formed at an outer surface of an outer end of the base portion, a first refracting surface, a first reflecting surface, a second reflecting surface, a second refracting surface, a light transmitting column, a positioning wall, an upper buckling arm and a lower buckling arm. The printed circuit board is mounted in the housing.

A lighting device includes a light permeable body which has an aperture through which light enters the body. A light source is moveable relative to the body to enable the lighting device to adopt selectively one of a first configuration and a second configuration. In the first configuration, the light source is positioned over the aperture so that light emitted by the light source passes through the body before illuminating the room. In the second configuration, the light source is spaced laterally from the aperture so that the room is illuminated directly by light emitted from the light source.

Provided is an LED lamp manufactured by an injection molding process, including a strip-shaped LED lamp, wherein the strip-shaped LED lamp includes a first strip-shaped conducting wire and a least one LED luminous body disposed on the strip-shaped conducting wire, and each of the LED luminous bodies includes a first chip and a second chip connected to the first chip via a second conducting wire; the LED lamp manufactured by the injection molding process further includes an injection molding body, and the first strip-shaped conducting wire penetrates into the injection molding body; the injection molding body is further formed, in an injection molding manner, with a fixing portion for fixing the LED lamp manufactured by the injection molding process in a hole to be penetrated; the first chip in each of the LED luminous bodies is an LED chip.

A loudspeaker mesh cover and a light-emitting loudspeaker having same are provided, the loudspeaker mesh cover is installed outside a loudspeaker, so as to play a certain protective role on the loudspeaker, enrich the light-emitting way and save the internal space of the loudspeaker. In addition, a light-emitting member is more convenient to disassemble in relative to a way of fixing a light-emitting assembly inside the loudspeaker. The loudspeaker mesh cover provided by the present disclosure may transform non-light-emitting loudspeakers on the market into light-emitting loudspeakers, so as to meet the demands of consumers for loudspeakers.

The invention relates to a luminaire (1) having a housing which is closed by a translucent cover (11). The housing accommodates a light source and control gear (6), the light source being formed from a plurality of LEDs (8) arranged on at least one circuit board (9). According to the invention the light from the LEDs (8) is coupled into at least one light guide (7) which extends from the cover (11) towards the LEDs (8). The coupled-in light from the LEDs (8) is guided in the light guide (7) to the cover (11) and is preferably emitted diffusely.

The invention relates to a printed circuit board (9) for a lamp (1), having a plurality of circuit paths having a multiplicity of light-emitting diodes (8, 12), wherein the light-emitting diodes in a circuit path are each connected up in series with one another and the circuit paths are connected in parallel with one another, wherein a first number of light-emitting diodes (LD11, LD15, LD21, LD25, LD31 LD35, LD41, LD45, LD51, LD55, LD61, LD65) in a circuit path are fitted on a front of the printed circuit board and a second number of light-emitting diodes (LDi11, LDi31, LDi52) in the same circuit path are fitted on a back of the printed circuit board.

An multimodal variable beam angle washlight and dynamic color flower effect luminaire is described employing multi colored LED array and a collimating partial homoginizing light guide which rotates paired with a rotating multifaceted prism which can selectively engage the light beam and be rotated while engaged. and further paired with a diffusion arm and zoom lens which converts the fixture into a variable angle wash light.

A lighting engine, system and method of fabrication are described. The system contains a flexible printed circuit (FPC) shaped as a loop. LEDs are mounted on the FPC to emit light toward a center of the loop. A light guide positioned in an interior of the loop receives light emitted by the LEDs through an edge of the light guide. The light guide has slots formed therein that receive locator pins to limit thermal displacement of the light guide towards the LEDs. Other apparatuses, systems, and methods are also disclosed.

A stage light fixture with an optical parameter detection function includes a light head, a supporting arm and a case. A light source for generating a light path, a light guiding member for guiding light to deviate from the light path, and an optical parameter detector are provided in the light head. The light guiding member can be freely switched into/out of the light path via a driving mechanism. The optical parameter detector can receive and detect the light guided out by the light guiding member. According to the present invention, the light guiding member can be switched into the light path to guide the light to the optical parameter detector for detection, only when the stage light fixture is started to work, or detection is performed at an interval between operations of the stage light fixture, while switched out of the light path when in operation.