Abl IP Holding LLC

Guan-Bo Lin

David P Ramer

An Mao

Ravi Kumar Komanduri

Rashmi Kumar Raj

Januk Swarup Aggarwal

Rashmi Kumar Rogers

Sean P White

Gregory Malone

Hampton Boone Maher

Jack C Rains, Jr

Yan Rodriguez

Craig Eugene Marquardt

Jie Chen

Jonathan Lloyd Goodman

A ultraviolet (UV) intensity indicator might use a UV responsive lumiphore to provide a converted, visible light level proportional to received UV light intensity for comparison to a visible brightness reference. For a desired UV intensity, the converted light should normally appear at least as bright as the reference light. For undesired UV, e.g. in a harmful wavelength range, the converted light should appear dimmer than the reference for normal operation and/or appear as bright as or brighter than the reference during excessive emission of the potentially hazardous UV emission. Alternatively, saturable lumiphores may provide different color outputs responsive to UV intensities for comparison to a multi-colored reference. Other examples contemplate use of a lumiphore to convert UV light to provide a visible light input to a visible light meter, such that an illuminance or brightness measurement by the meter gives a proportional representation of intensity of the UV light.

Indication of ultraviolet (UV) light intensity using a lumiphore

An example lighting device includes a luminaire having a miniature illumination light source matrix including miniature illumination light sources configured to be driven by electrical power to emit incoming light rays for illumination lighting. Luminaire further includes an optical lens sheet positioned directly over and abutting the miniature illumination light source matrix and configured to extend over the illumination light source matrix and including an input surface coupled to receive the incoming light rays and an output surface lens array. Input surface is a substantially planar lateral surface extending across an entirety of the miniature illumination light source matrix. Output surface lens array includes a plurality of miniature optical lenses, including a respective miniature optical lens for each of the miniature illumination light sources to refract the incoming light rays into an outputted beam pattern of output light rays for the illumination lighting.

Lighting device with miniature illumination light sources and optical lens sheet

An example lighting device includes a luminaire having an illumination light source including an illumination light source configured to be driven by electrical power to emit incoming light rays. Luminaire further includes a polarization selective optic coupled to the illumination light source to receive the incoming light rays emitted by the illumination light source and output polarized light rays for illumination lighting. Based on the incoming light rays, the polarization selective optic outputs the polarized light rays including a TM wave. Polarization selective optic steers the TM wave to be outputted to a far field at a grazing angle. Polarization selective optic steers a substantially non-TM wave away from the far field at the grazing angle. Lighting device further includes an illumination light source driver to control a light source operation of the illumination light source.

Polarization selective optic for glare control of illumination lighting

To improve efficiency, particularly for general illumination applications, a source of green or yellow light includes a solid state device (e.g. a laser diode) to produce an infrared laser beam and a light frequency up-converter to convert the infrared light into green or yellow light. A luminaire includes such a source as well as a source providing two other colors of light, such as red and blue (e.g. not green or yellow). The emitters of the other source may be light emitting diodes or additional laser diodes. The luminaire outputs a combination of the various colors of lights from the sources, for example, to produce white light. If the different emitters are independently controllable, the luminaire may be adjusted or 'tuned' to output white light of different color characteristics and/or to output combined light of various colors over a wide region of the visible light color gamut.

Light frequency up-conversion of laser light, for producing green or yellow light

A cleansing lighting device includes a laser light source configured to emit light in the visible light spectrum or in the infrared light spectrum. The cleansing lighting device also includes a light frequency up-converter to convert longer wavelength light from the laser light source to shorter wavelength light. The converted light has a dominant wavelength in the portion of the ultraviolet range at or below 380 nm, suitable for the cleansing application. An example cleansing lighting device may also include an optical element, such as a beam shaping lens or a variable optical beam deflector, to distribute the resulting ultraviolet light from the up-converter for the cleansing application. Such a cleansing lighting device may be a standalone device, although the device or individual components for light-based cleansing may be incorporated in a luminaire, for example, together with an artificial light source adapted to general illumination.

Light frequency upconversion of laser light, for cleansing

An example luminaire includes a laser light source, a photoluminescent material and a holographic optical element. The holographic optical element has a hologram optically coupled to the laser light source and to the photoluminescent material. The hologram is configured to distribute light received from the laser light source as a pattern of light to the photoluminescent material.

Luminaire using holographic optical element and luminescent material

A tunable luminaire includes a laser light source and at least two different holograms. A beam of light is selectively directed from the laser light source to a first hologram in a first state of the luminaire to enable the luminaire to output light of a first characteristic. A beam of light is selectively directed from the laser light source to a second hologram in a second state of the luminaire to enable the luminaire to output light of a different second characteristic. For example, in the different states, different patterns of light from the holograms pass through and pump different photoluminescent materials, to produce luminaire light outputs in the different states having a different color characteristic. In other examples, in the different states, different patterns of light from the holograms pass through different elements or portions of an optical system to provide light outputs having different distributions.

Tunable holographic laser lighting for versatile luminaire

The examples relate to various implementations to enable simultaneous controllable lighting distribution and a wide angle image light output from areas of a luminaire. An example of such a luminaire includes image light emitters and an array of general illumination light emitters for general illumination. A grid structure that has a supporting grid of rows and columns with intersection points and transparent sections or gaps is used to maintain a spaced arrangement of the general illumination light emitters and the image light emitters. Each of the transparent sections is bounded by individual structural members of the grid meeting at individual intersection points. In a specific example, image light emitters are located at intersection points of the grid structure. The general illumination light emitters are optically coupled for emitting general illumination light through the transparent sections of the grid.

Simultaneous display and lighting

An example lighting device has a luminaire. The luminaire includes a laser light source configured to be driven by electrical power to emit laser light rays, a phosphor plate, and a solid medium freeform prism or waveguide. The solid medium freeform prism or waveguide confines incoming laser light ray emitted from the laser light source inside the solid medium until conversion into illumination lighting by the phosphor plate. The solid medium includes an input surface or lens coupled to the laser light source, an output surface, and a highly reflective internal surface to reflect laser light rays to propagate inside the solid medium until emission through the output surface. The phosphor plate is coupled to the output surface of the solid medium to convert the reflected laser light rays into the illumination lighting to emit from the luminaire.

Laser illumination lighting device with solid medium freeform prism or waveguide

For a luminaire offering both illumination and display functionality, control strategies coordinate illumination/image output so as to mitigate interference of the illumination light output with aspects of the displayed image light output. In one example, when displaying a selected image with one or more white regions in the image, a sufficient number of selected white illumination emitters can be ON or operating in a low power state in the white regions while the rest of the luminaire output area can display the non-white elements of the image with aligned illumination emitters turned OFF. In another example, an image is displayed in a selected region of the luminaire output while illumination emitters within the area displaying the image are OFF or operating in a low power state, but illumination emitters along other parts of the luminaire output are turned ON.

Illumination and display control strategies, to mitigate interference of illumination light output with displayed image light output

The examples relate to various implementations of a software configurable lighting device utilizing a projection and/or waveguide-based lighting system that offers the capability to present an image display and/or provide general illumination lighting of a space according to an image display selection and/or general illumination distribution selection. A controller generates control signals that cause the projection and/or waveguide-based lighting system to output the selected images and general illumination.

Projection and/or waveguide arrangements for a software configurable lighting device

The examples relate to various implementations of a software configurable luminaire and a transparent display device for use in such a luminaire. The luminaire is able to generate light sufficient to provide general illumination of a space in which the luminaire is installed and provide an image display. The general illumination is provided by additional light sources and/or improved display components of the transparent display device.

Luminaire utilizing a transparent organic light emitting device display

The disclosed examples relate to various implementations of a micro-light emitting diode upon which is built a controllable variable optic to provide a chip-scale light emitting device. An example of the controllable variable optic described herein is a controllable electrowetting structure having a leak-proof sealed cell with a first fluid having a first index of refraction and a second fluid having a second index of refraction. The controllable electrowetting structure may be integrally formed on or in a substrate or semiconductor material associated with the micro-light emitting diode in alignment with one or more of the light emitting diodes of the micro-LED device to provide a controllable lighting distribution.

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Reston, VA, United States of America

Guan-Bo Lin