An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.

Provided is a rod lens array including a plurality of two-dimensionally arranged rod lenses. The rod lens array can be provided in a state of being easily mounted in lighting devices for HUD, and the like. The rod lens array includes: a rod lens portion in which a plurality of rod lens elements including a first light guide member is two-dimensionally arranged; an emission portion in which a plurality of curved elements including the first light guide member is two-dimensionally arranged so as to correspond, respectively, to a plurality of rod lens elements on an emission side; and a connection portion in which a connection element including the first light guide member two-dimensionally extends so as to integrally connect the plurality of curved elements to the plurality of rod lens elements.

A luminaire for providing configurable static lighting or dynamically-adjustable lighting. The luminaire uses an array of focusing elements that act on light provided via a corresponding array of sources or via an edge-lit lightguide. Designs are provided for adjusting the number of distinct beams produced by the luminaire, as well as the angular width, angular profile, and pointing angle of the beams. Designs are also provided for systems utilizing the adjustable luminaires in various applications.

A hand-held vision sensor apparatus comprises a plurality of light sources, control activation elements and an image sensing array, encased within a housing such that the control activation elements are disposed at a user-accessible location on the housing. The housing further includes a pair of exit apertures for emitting illumination directed toward a medical specimen and an entrance aperture for capturing reflected light from the medical specimen. The light sources are disposed in alignment with the pair of exit apertures, and the image sensing array is aligned with the entrance aperture. The control activation elements are utilized to energize the light sources and control the functioning of the image sensing array. A computer port may be included and used to communicate command controls to the light sources, image sensing array and control activation elements in a manner that allows for a remotely-located technician to communicate with the hand-held vision sensor.

The present disclosure relates to a light diffusion characteristic and a light reflection characteristic, and a light source device, a backlight unit, and an electronic device that include the lens. By causing the light emitted from the light source of the light source device to have both light diffusibility and light directivity using the lens including a lower layer portion having a light diffusion characteristic and an upper layer portion having a light reflection characteristic, it is possible to improve a light emission characteristic of the light source device, and when an optical gap is reduced due to the thickness reduction of the backlight unit, the image quality of the backlight unit can be improved.

An optical transformer includes a plurality of light emitters, a plurality of photovoltaic cells positioned to receive light from at least a first subset of the plurality of light emitters, the plurality of photovoltaic cells including at least a first photovoltaic cell and a second photovoltaic cell, and one or more optically triggered switches positioned to receive light from at least a second subset of the plurality of light emitters, the one or more optically triggered switches including at least a first optically triggered switch electrically coupled to the first photovoltaic cell and the second photovoltaic cell. A method of operating the optical transformer is also described.

A light source device includes: a light source having an upper surface including a light-emitting surface, the light source comprising a plurality of light-emitting parts arranged in a two-dimensional array; a lens located above and spaced apart from the light-emitting surface of the light source, wherein the lens comprises an optically functional part, and a flange part located along an outer periphery of the optically functional part; and a support part formed of a light-shielding material and configured to support at least the flange part of the lens. A surface area of a first surface of the optically functional part is greater than a surface area of a second surface of the optically functional part. The flange part defines at least one first recess in a surface located at a same side as the second surface.

A light source device includes a plurality of light emitting parts, a first lens, and an optical lens. Each light emitting part is configured to emit light from the light emitting surface at a first full-width half-maximum and is configured to be individually turned on. The optical lens has a first surface including incident regions and a second surface including emission regions. A minimum distance between the first surface of the optical lens and the first lens is 0.1 mm or more and 1.0 mm or less. A light emitted from each of the light emitting parts enters the optical lens through the first lens, the light being emitted from the first lens at a second full-width half-maximum smaller than the first full-width half-maximum, such that lights emitted from two or more of the light emitting parts are irradiated to two or more corresponding irradiation regions.

A variety of light-emitting devices for general illumination utilizing solid state light sources (e.g., light emitting diodes) are disclosed. In general, the devices include a scattering element in combination with an extractor element. The scattering element, which may include elastic and/or inelastic scattering centers, is spaced apart from the light source element. Opposite sides of the scattering element have asymmetric optical interfaces, there being a larger refractive index mismatch at the interface facing the light emitting element than the interface between the scattering element and the extractor element. Such a structure favors forward scattering of light from the scattering element. In other words, the system favors scattering out of the scattering element into the extractor element over backscattering light towards the light source element. The extractor element, in turn, is sized and shaped to reduce reflection of light exiting the light-emitting device at the devices interface with the ambient environment.

An illumination apparatus comprises a plurality of LEDs aligned to an array of directional optical elements wherein the LEDs are substantially at the input aperture of respective optical elements. An electrode array is formed on the array of optical elements to provide at least a first electrical connection to the array of LED elements. Advantageously such an arrangement provides low cost and high efficiency from the directional LED array.