Abstract: An illumination device includes a light-emitting element (LEEs); a light guide extending in a forward direction from a first end to a second end to receive at the first end LEE light and to guide the light to the second end, such that divergence of the light received at the first end and divergence of the guided light that reaches the second end are substantially the same; a light divergence modifier optically coupled to the light guide at the second end to receive the guided light, to modify the divergence of the guided light, such that the light provided by the light divergence modifier has a modified divergence different from the divergence of the guided light; and an optical extractor optically coupled to the light divergence modifier, to output into the ambient environment light provided by the light divergence modifier as output light in one or more output angular ranges.

Abstract: A variety of luminaire modules are disclosed that are configured to output light provided by multiple light-emitting elements (LEEs). In general, embodiments of the luminaire modules feature at least two LEEs disposed on at least one substrate, at least two light guides that receive light from corresponding LEEs of the at least two LEEs, and at least one optical extractor that receives light from corresponding light guides from the at least two light guides.

Abstract: A variety of illumination devices are disclosed that are configured and arranged to output a direct intensity distribution onto work surfaces and an indirect intensity distribution towards background regions. The illumination devices include direct and indirect optical components configured to provide direct and indirect illumination. The illumination devices can be configured to allow interdependent as well as independent control of the direct and indirect illumination, e.g., by a user or by pre-programmed internal or external control circuitry.

Abstract: A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Abstract: A light emitting device includes a light emitting diode (LED); a transparent optic having a refractive index noptic; and a phosphor layer spaced apart from the LED and positioned between the LED and the transparent optic. The phosphor layer has an effective refractive index nphosphor, where a gap between the LED and the phosphor layer has a refractive index ngap that is less than nphosphor. The transparent optic has an inner convex surface in contact with the phosphor layer. The inner convex surface has an inner radius of curvature r; and an outer convex surface facing away from the phosphor layer and being a surface through which the light emitting device emits light into a medium adjacent the outer convex surface. The medium has a refractive index nmedium. The outer convex surface has an outer radius of curvature R, such that r/R is equal to nmedium/noptic.

Abstract: An illumination device includes a light source configured to emit, during operation, light with a prevalent direction of propagation different from a direction of an optical axis of the illumination device; and an optical coupler including a transparent material, the optical coupler having an input aperture, an exit aperture and a first side surface and a second side surface arranged between the input aperture and the exit aperture, the exit aperture being centered on the optical axis of the illumination device. The optical coupler receives the emitted light through the input aperture from the light source. Further, the first side surface and the second side surface redirect the received light via total internal reflection (TIR) to the exit aperture. Additionally, the redirected light is issued through the exit aperture.

Abstract: Illumination devices with adjustable optical elements configured to provide a variable illumination pattern of an area are described. The adjustable optical elements of the illumination devices can be traversed relative to a surface (e.g., a ceiling of a room) to vary the light distribution and/or intensity to the surface.

Abstract: Light-emitting elements such as LEDs are associated with light-converting material such as phosphor and/or other material. A donor substrate comprising the light-converting and/or other material is suitably placed relative to a target substrate associated with the light-emitting elements. A laser or other energy source is then used to transfer the light-converting and/or other material in a pattern via writing or masking from the donor substrate to the target substrate in accordance with the pattern. Addressability and targetability of the transfer process facilitates precise patterning of the target substrate.

Abstract: A variety of illumination devices are disclosed that are configured to manipulate light provided by one or more light-emitting elements (LEEs). In general, embodiments of the illumination devices feature one or more optical couplers that redirect illumination from the LEEs to a reflector which then directs the light into a range of angles. In some embodiments, the illumination device includes a second reflector that reflects at least some of the light from the first reflector. In certain embodiments, the illumination device includes a light guide that guides light from the collector to the first reflector. The components of the illumination device can be configured to provide illumination devices that can provide a variety of intensity distributions. Such illumination devices can be configured to provide light for particular lighting applications, including office lighting, task lighting, cabinet lighting, garage lighting, wall wash, stack lighting, and downlighting.

Abstract: In a single lighting device including a large number of light-emitting elements (LEEs), the LEEs are divided into separately powered groups, and different combinations of the groups are fully energized to achieve the desired overall brightness. In some embodiments, the number of LEEs in each group has a binary relationship to the other groups. The resolution of the dimming is the brightness of the smallest group. In one example of five binary weighted groups of LEEs, 32 brightness levels can be achieved while the LEEs in the energized groups are fully ON. Thus, since there is no high frequency switching, there is substantially no power dissipation by the dimming control system, and there is limited noise or EMI created. The dimming control can be easily implemented with a logic circuit controlling a transistor switch for each group.

Abstract: An array of non-packaged LED dies is sandwiched between at least two transparent substrates having conductors bonded to the electrodes without wires. The light sheets are formed to emit light from opposite surfaces of the light sheet to create a bidirectional light sheet. The light sheet may be suspended from a ceiling to be perpendicular to the ceiling, or the angles of the light sheet may be adjusted.

Abstract: A luminaire module includes at least one light-emitting element (LEE); a light guide (LG) extending in a first direction from a first end of LG to a second end of LG to receive at the first end light emitted by the LEE and configured to guide the light to the second end; and an optical extractor (OE) optically coupled to LG at the second end to receive light from the LEE guided from the first end to the second end of LG. OE includes a first interface configured to reflect a first portion of the light exiting the LG and transmit a second portion of the light exiting the LG so that the second portion of the light exits OE to an ambient environment in the first direction, and a second interface configured to transmit light incident thereon to the ambient environment in a direction different from the first direction.

Abstract: The present technology provides a solid-state lighting device and method of manufacturing same. The device can include a carrier substrate having registration features on a first side; light-emitting elements (LEEs) operatively coupled with the registration features; electrically conductive elements (ECEs) operatively coupled with a first side, where the ECEs operatively interconnect the LEEs; and one or more cover layers operatively coupled with the LEEs. The ECEs, furthermore, can be configured to operatively connect the LEEs to a source of power.

Abstract: An illumination system is described including a plurality of illumination devices, each device including (i) light-emitting elements (LEEs) arranged along a corresponding first axis; (ii) an optical extractor extending along a corresponding longitudinal axis parallel to the first axis; and (iii) a light guide positioned to receive at a first end of the light guide light emitted by the LEEs and guide it to a second end of the light guide. The optical extractor is optically coupled to the light guide at the second end and is shaped to redirect the light guided by the light guide into a range of angles on either side of the light guide. The illumination devices are connected to each other to form a polygon such that the longitudinal axes of the connected illumination devices lie in a common plane.

Abstract: Illumination devices are described for illuminating a target area, e.g., floors of a room, using solid-state light sources. In general, an illumination device includes a first light guide extending along a first plane, the first light guide to receive light from first light emitting elements (LEEs) and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide to receive light from second LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic to receive light from the first light guide and direct the light in first and second angular ranges; and a second redirecting optic to receive light from the second light guide and direct the light in third and fourth angular ranges, where the first, second, third and fourth angular ranges are different.

Abstract: A solid state lamp, such as one that can replace an incandescent light bulb, has a base portion having an electrical connector for connection to a source of power, such as an Edison-type connector for connection to the mains voltage. An AC/DC converter in the base converts the mains voltage to a suitable light emitting diode (LED) drive voltage. A plurality of receptacles on the base connects to electrodes of plug-in modules. Each plug-in module supports a plurality of low power LEDs connected in series. The strings of LEDs on different modules are connected in parallel when connected to the receptacles. The modules and base are configured to allow a user to operate the lamp with different combinations of modules to generate a desired light output from the lamp. For example, the user can recreate the lumens equivalent of a 20 W, 40 W, or 60 W bulb by using one, two, or three modules.

Abstract: A light emitting device is described. The light emitting device includes a base; a light emitting diode supported by the base; a first layer spaced apart from the light emitting diode and including a light emitting material, the first layer having a refractive index nfirst—layer; a transparent optic having a refractive index noptic that is greater than or equal to nfirst—layer, the transparent optic having a convex surface facing away from the light emitting diode and the first layer being positioned between the transparent optic and the light emitting diode. A gap between the light emitting diode and the first layer has a refractive index ngap that is less than nfirst—layer, and the convex surface has a radius of curvature sufficiently large relative to a dimension of the first layer to eliminate total internal reflection of light entering the transparent optic from the first layer.

Abstract: In one embodiment, an LED lamp has a generally bulb shape. The LEDs are low power types and are encapsulated in thin, narrow, flexible strips. The LEDs are connected in series in the strips to drop a desired voltage. The strips are affixed to the outer surface of a bulb form to provide structure to the lamp. The strips are connected in parallel to a power supply, which may be housed in the lamp. Since many low power LEDs are used and are spread out over a large surface area, there is no need for a large metal heat sink. Further, the light emission is similar to that of an incandescent bulb. In other embodiment, there is no bulb form and the strips are bendable to have a variety of shapes. In another embodiment, a light sheet is bent to provide 360 degrees of light emission. Many other embodiments are described.

Abstract: Illumination devices are described for illuminating a target area, e.g., floors of a room, using solid-state light sources. In general, an illumination device includes a first light guide extending along a first plane, the first light guide to receive light from first light emitting elements (LEEs) and guide the light in a first direction in the first plane; a second light guide extending along the first plane, the second light guide to receive light from second LEEs and guide the light in a second direction in the first plane opposite to the first direction; a first redirecting optic to receive light from the first light guide and direct the light in first and second angular ranges; and a second redirecting optic to receive light from the second light guide and direct the light in third and fourth angular ranges, where the first, second, third and fourth angular ranges are different.

Abstract: In certain aspects, an adapter box includes a box having multiple walls and a bottom and a cover including a base plate and a second hinge portion, where a first hinge portion and the second hinge portion are configured to form a detachable hinge between the cover and the box in a hinged configuration. The adapter box further includes a locking mechanism configured to engage first and second locking portions and lock the cover to the box in the closed configuration. The cover is configured to attach to a luminaire and the box and cover are configured to allow electrical and mechanical interconnection of the luminaire to a source of power.