A luminaire (1) comprising identical curved LED Modules (13, 13′, 13″) in an inner and an outer arrangement of LED Modules. Said LED Module comprising a curved PCB (14) having a main surface and a number of LEDs (15) arranged thereon. The LED Module has width W and is curved with its main surface extending in a plane Q. The LED Module extends over a circle with a radius Rc, wherein 200 mm<=Rc<=450 mm, and extends over an angle a over said circle, wherein 36°<=a<=72°. The number of LEDs is in between 3 and 150. Each LED (15) has a respective doughnut like shaped lens to render the LED during operation to emit a rotational symmetric batwing beam with a maximum intensity Imax of the batwing beam at an angle 13 with 60°<=13<=80° with said optical axis, and a FWHM in the range of 15-30°.

A light emitting device (1) comprising at least one LED filament (2) comprising a flexible substrate (3) and a plurality of LED light sources (4) arranged on the flexible substrate (3), and an encapsulation (5a, 5b) encapsulating the plurality of LED light sources (4) and at least a part of one side of the flexible substrate (3), where the at least one LED filament (2) comprises at least one knot (6) in the form of intentional complication in cordage of the at least one LED filament (2), and where the intentional complication in cordage is any one of a fastening made by looping the at least one LED filament (2) on itself or together with a further LED filament and tightening it, and an intentional complication in cordage in which the at least one LED filament (2) is interlaced with at least one further LED filament at right angles to one another.

A light-emitting system (1000) removably attachable to headgear is provided, which comprises: a form factor (1010) configured to surround a portion of the headgear when the light-emitting system (1000) is removably attached to the headgear for use; a plurality of halo lighting elements (1100) configured to selectively generate at least a partial halo of light that radiates outwardly away from the light-emitting system; and at least one task lighting element (1120) aligned in a direction along a task light axis (1130) that is fixed and oriented downwardly at an oblique angle (α) relative to a transverse plane (TP) of the light-emitting system (1000), the at least one task lighting element (1120) being configured to selectively generate flood task lighting in an area in front of a user.

The present disclosure relates to a light-emitting diode, LED, filament (100) including a filament core. The filament core comprises a flexible elongated carrier (102) having a first side, a plurality of LEDs (104) arranged on the first side, and an encapsulant (106) embedding at least said plurality of LEDs and at least a portion of the carrier. At least one alignment member (108) protrudes from the filament core at an angle from an elongation of the filament core.

An LED light bulb includes a bulb shell, a bulb base, two conductive supports, a stem, two supporting arms, and an LED filament. The bulb base is connected with the bulb shell. The two conductive supports are disposed in the bulb shell. The stem extends from the bulb base to inside of the bulb shell. The two supporting arms are disposed in the bulb shell. The LED filament includes a plurality of LED chips arranged in an array and two conductive electrodes respectively disposed at two ends of the LED filament and connected to the LED chips. The two conductive electrodes are respectively connected to the two conductive supports. A direction of a first highest curved portion of the LED filament and a direction of a second highest curved portion of the LED filament are substantially opposite to a direction of a lower curved portion of the LED filament.

A light guide for a luminaire is provided. The light guide includes: an elongated base comprising a light emitting surface at a distal end, and opposing major faces; and a plurality of collimators arranged in an adjacent manner and projecting in a proximal direction from the base, wherein each collimator has a light receiving surface at a proximal end, wherein each collimator expands laterally outwardly in a distal direction. Substantially all light received at the light receiving surfaces internally reflects through the collimators and the base and emits from the light emitting surface.

The present disclosure relates to curved arrays of individually addressable light-emitting elements for sweeping out angular ranges. One example device includes a curved optical element. The device may also include a curved array of individually addressable light-emitting elements arranged to emit light towards the curved optical element. A curvature of the curved array is substantially concentric to at least a portion of the circumference of the curved optical element. The curved optical element is arranged to focus light emitted from each individually addressable light-emitting element to produce a substantially linear illumination pattern at a different corresponding scan angle within an angular range. The device may further include a control system operable to sequentially activate the individually addressable light-emitting elements such that the substantially linear illumination pattern sweeps out the angular range.

A luminaire includes multiple light-emitting elements (LEEs); a base supporting the LEEs; and a first wall and a second wall each extending along a first direction from a respective first end facing the LEEs to a respective second end. The first and second walls have light-reflective surfaces facing each other. In one or more cross-sectional planes parallel to the first direction, the light-reflective surfaces of the first and second walls have first portions that curve in opposite directions, second portions that are parallel, and third portions that curve in like directions. The first portions are arranged facing the LEEs to provide an input aperture that receives light from the LEEs. The third portions are arranged to provide an exit aperture that outputs output light into an ambient environment. The first and second walls are configured to propagate light from the input aperture to the exit aperture.

A minimal dive light assembly includes two flashlights and a U-shaped handle. One of the flashlights is provided as a primary and the other is provided as a back-up torch. The lights are placed within the upper space of the handle close to each other being fastened to the top bar of the handle by means of fastening devices. In one embodiment, the fastening device may be provided as elastic cords. In another embodiment, the fastening device may be provided as clamps. Auxiliary devices such as a bolt snap, a wrist lanyard, and retractor can be added to the assembly in order to add extra features. Having the lights placed in the upper space of the handle provides a more protected torch light that is less likely to become entangled in ropes.

An acoustic housing, a light fixture, a suspended ceiling system, and a method of decreasing sound transfer from a light fixture in a suspended ceiling are disclosed. An acoustic hood for a light fixture in a suspended ceiling may include a partially enclosed space formed between a plurality of wall portions. A light fixture may include first and second layers that are coupled to one another and form a partially enclosed space. A suspended ceiling system may include the acoustic hood or light fixture. The method relates to disposing an acoustic housing spaced from the light fixture.