Abstract: An illustrative radio frequency (RF) power control system includes an RF transmitter configured to operate external to a recipient, a cochlear implant configured to operate internal to the recipient based on RF power received from the RF transmitter, and a processor that, while operating in a power adaptation mode during which the cochlear implant applies stimulation to the recipient: 1) receives an audio signal, 2) directs the RF transmitter to provide the RF power to the cochlear implant at a power level determined based on the audio signal and based on a power level mapping function, 3) determines an error value representing a difference between a target metric and a measured metric associated with receipt of the RF power at the cochlear implant, and 4) updates the power level mapping function based on the error value. Corresponding systems and methods are also disclosed.

Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, a camera, and a selective mirror placed between the light source and camera. The selective mirror transmits light of a spectrum detected by the camera and reflects light of a spectrum generated by the light source. The light source is transparent to light incident on its face.

Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, photoluminescent material which converts light from the light source to light of another spectrum, and a selective mirror which reflects light generated by the light source and transmits light generated by the photoluminescent material. The photoluminescent material may be arranged so as to provide a plurality of light sources that emanate light of various colors. In an embodiment, the photoluminescent material is situated in small regions within a transparent material and lenses are used to collimate light emitted from the small regions.

Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, photoluminescent material which converts light from the light source to light of another spectrum, and a selective mirror which reflects light generated by the light source and transmits light generated by the photoluminescent material. The photoluminescent material may be arranged so as to provide a plurality of light sources that emanate light of various colors.

Abstract: An apparatus for providing a photoluminescent light source is disclosed. In one embodiment, the apparatus comprises a light source that emanates light of a particular spectrum, photoluminescent material which converts light from the light source to light of another spectrum, and a selective mirror which reflects light generated by the light source and transmits light generated by the photoluminescent material. The photoluminescent material may be arranged so as to provide a plurality of light sources that emanate light of various colors.

Abstract: A system for providing a light source is disclosed. In one embodiment, the apparatus comprises a light guide made of several transparent layers having different refractive indexes.

Abstract: An energy efficient polarized light source system is disclosed. In one embodiment, the system comprises a reflector and a reflecting polarizer. A transparent light source and a wave retarder are placed in between the reflector and reflecting polarizer.