Various arrangements for light distribution incorporated as part of a device are presented. A circular light guide may be used that receives light from a plurality of light emitters that can be arranged in a circular pattern. A conical reflector may be used and may be positioned to reflect light emitted from the circular light guide onto an exterior of a case of the device. The conical reflector may reflect light such that light is reflected by the exterior of the case in the shape of a halo into an ambient environment of the device.

An LED illumination module is described, where a row of LED elements (1) is arranged via a substrate (16) on a secondary cooling element (2). The secondary cooling element (2) can consist of a first material layer (16, 17) of copper and a second material layer (18) of aluminium. In such material combinations, phononic refraction leads to a good lateral heat distribution, which improves the heat flow and reduces temperature gradients. Alternatively or in addition thereto, the secondary cooling element (2) can be equipped with heat pipes. The LED elements (1) are electrically contacted by means of a current supply member (21) arranged at a distance from the substrate (16).

A lamp structure contains: a lampshade, a transmission cap, and an illumination element. The lampshade is tubular and includes a first orifice and a second orifice which are defined on two ends of the lampshade respectively. The lampshade is opaque and includes a reflective face formed on an inner wall thereof. The transmission cap is tubular and is accommodated in the lampshade, and a gap is defined between the transmission cap and the reflective face. The illumination element is defined between the transmission cap and the reflective face of the lampshade. One part of lights penetrates through the transmission cap from the illumination element, another lights emit out of a front side of the lamp structure via the reflective face, the transmission cap and the first orifice, and the other lights illuminate out of a rear side of the lamp structure via the second orifice.

A lamp structure contains: a lampshade, a transmission cap, and an illumination element. The lampshade is tubular and includes a first orifice and a second orifice which are defined on two ends of the lampshade respectively. The lampshade is opaque and includes a reflective face formed on an inner wall thereof. The transmission cap is tubular and is accommodated in the lampshade, and a gap is defined between the transmission cap and the reflective face. The illumination element is defined between the transmission cap and the reflective face of the lampshade. One part of lights penetrates through the transmission cap from the illumination element, another lights emit out of a front side of the lamp structure via the reflective face, the transmission cap and the first orifice, and the other lights illuminate out of a rear side of the lamp structure via the second orifice.

A display screen and a display device are provided. The display screen includes a display panel assembly, a light bar, and a reflective layer. The display panel assembly includes at least two display panels with a splicing gap between each two display panels. The light bar is attached to a display surface of the display panel assembly, covers the splicing gap, and has two opposite side surfaces extending along a length of the splicing gap. At least one side surface of the light bar is provided with the reflective layer to prevent black borders from appearing on the side surfaces of the light bar.

Lamps and bulbs are disclosed generally comprising different combinations and arrangements of a light source, a reflective optical element, and a separate diffusing layer. This arrangement allows for the fabrication of lamps and bulbs that are efficient, reliable and cost effective and can provide an essentially omni-directional emission pattern, even with a light source comprised of an arrangement of LEDs. The lamps according to the present invention can also comprise thermal management features that provide for efficient dissipation of heat from the LEDs, which in turn allows the LEDs to operate at lower temperatures. The lamps can also comprise optical elements to help change the emission pattern from the generally directional pattern of the LEDs to a more omni-directional pattern.

A scialytic LED lamp, particularly for operating rooms and the like, includes a first ring that includes a plurality of first LED light sources, first and second annular reflectors, and a second ring that includes a plurality of second LED light sources, a third annular reflector, and a fourth annular reflector. The scialytic LED lamp also includes a first light radiation emitted by the first LED light sources reflected initially by the first annular reflector and then by the second annular reflector in order to illuminate an operating area. A second light radiation emitted by the second LED light sources is reflected initially by the third annular reflector and then by the fourth annular reflector in order to illuminate the operating area.

A luminaire is provided for illuminating a task surface and a volume of space above and about the task surface, including a limited human occupiable space proximate the task surface. The luminaire includes a generally vertical riser portion and a generally horizontal extension arm portion. A task lighting element on the extension arm portion directs light in a directional light distribution pattern toward a task surface. A source of light associated with the riser portion of the luminaire produces light in a generally diffuse light distribution pattern which, when the luminaire is supported in its operative position relative to the task surface, illuminates the volume over and about the task surface.

An illumination device including an upper casing, a transparent bottom casing, a light source module and a reflection layer is provided. The upper casing has a lower surface. The transparent bottom casing has an upper surface. The light source module is disposed on the lower surface of the upper casing. The reflection layer is extended between the upper surface of the transparent bottom casing and the lower surface of the upper casing for reflecting the light emitted by the light source module.

Various arrangements for light distribution incorporated as part of a device are presented. A circular light guide may be used that receives light from a plurality of light emitters that can be arranged in a circular pattern. A conical reflector may be used and may be positioned to reflect light emitted from the circular light guide onto an exterior of a case of the device. The conical reflector may reflect light such that light is reflected by the exterior of the case in the shape of a halo into an ambient environment of the device.