Abstract: An apparatus includes a plurality of integrated active holographic elements (Hogels). Each hogel includes one or more light-emitting elements, a micro-lens array, and circuitry to drive the one or more light-emitting elements. The circuitry may be implemented as a quad flat no leads (QFN) package. In some implementations, a plurality of integrated active hogels may be coupled together to form a tile, which includes tile circuitry to drive the integrated circuits of each of the hogels. Multiple tiles may be coupled to one another to form a panel, which includes panel circuitry to drive each of the tiles. Multiple panels may be coupled to one another to form a display device, which may include a display circuit coupled to the panel circuitry of each of the panels.

Abstract: One embodiment of an optical system described herein comprises a source including light emitting diode chip and a homogenizer. One embodiment of the homogenizer comprises an entrance face positioned to receive light from the source, the entrance face having a first shape, a body configured to homogenize the received light and an exit face, the exit face parallel to the primary emitting face of the source. The homogenizer can emit light with a half angle that is at least 80% of the half angle of light entering the homogenizer.

Abstract: A photo-medicine device may include a housing having: a mounting member and an application member including an aperture. An LED array having at least one LED configured to emit light through the aperture at a first wavelength and at least one LED configured to emit light through the aperture at a second wavelength may be mounted to the mounting member. The LED array may be in thermal communication with the mounting member such that the housing functions as a heat sink for the LED array. In some embodiments, the first wavelength comprises approximately 415 nm and the second wavelength comprises approximately 660 nm. In some embodiments, the housing has a heat dissipation surface area of at least three square inches per LED watt.

Abstract: One embodiment of an optical system described herein comprises a source including light emitting diode chip and a homogenizer. One embodiment of the homogenizer comprises an entrance face positioned to receive light from the source, the entrance face having a first shape, a body configured to homogenize the received light and an exit face, the exit face parallel to the primary emitting face of the source. The homogenizer can emit light with a half angle that is at least 80% of the half angle of light entering the homogenizer.

Abstract: One embodiment of an optical system described herein comprises a source including light emitting diode chip and a homogenizer. One embodiment of the homogenizer comprises an entrance face positioned to receive light from the source, the entrance face having a first shape, a body configured to homogenize the received light and an exit face, the exit face parallel to the primary emitting face of the source. The homogenizer can emit light with a half angle that is at least 80% of the half angle of light entering the homogenizer.

Abstract: One embodiment of an optical system described herein comprises a source including light emitting diode chip and a homogenizer. One embodiment of the homogenizer comprises an entrance face positioned to receive light from the source, the entrance face having a first shape, a body configured to homogenize the received light and an exit face, the exit face parallel to the primary emitting face of the source. The homogenizer can emit light with a half angle that is at least 80% of the half angle of light entering the homogenizer.