Abstract: A wavelength-converting structure for a light module including a solid-state light source. The wavelength-converting structure includes a plurality of apertures formed therein. The plurality of apertures may be configured to increase conversion efficiency of the wavelength-converting structure or color uniformity.

Abstract: A wavelength-converting structure for a light module including a solid-state light source. The wavelength-converting structure includes a pattern of discrete wavelength-converting sections of wavelength-converting material formed therein, wherein each wavelength-converting section is separated from adjacent wavelength-converting sections by at least one transmissive section. The wavelength-converting sections are comprised of a wavelength-converting material such as a phosphor that converts at least a portion of the light emitted by the solid-state light source into light having a different peak wavelength.

Abstract: A wavelength-conversion plate is described herein. The wavelength conversion plate may include a converter of a first ceramic material and a reflector of a second ceramic material. The first ceramic material converts the primary light emitted by a light source such as a light emitting diode (LED) into a secondary light and the second ceramic material reflects the secondary light emitted by said converter. Preferably, the converter is inlaid into the reflector so that the reflector surrounds an outer edge of the converter. Such a configuration has an advantage of reducing unwanted side emissions from the converter.

Abstract: A base-up incandescent lamp (10) includes a coiled-coil filament (14) that has a primary wire (18) and a secondary wire (16), the primary wire (18) comprising an overwind that overlies the secondary wire (16) and provides a lower filament temperature and, therefore, less filament sag and a concomitant longer lamp life.

Abstract: Operation of an HID lamp may be improved by forming a glow generating recess on an exterior side the electrode. The lamp may be of standard construction with a light transmissive lamp envelope having a wall defining an enclosed volume. At least one electrode assembly is extended in a sealed fashion from the exterior of the lamp through the lamp envelope wall to be exposed at an inner end of the electrode assembly to the enclosed volume. A metal halide lamp fill is enclosed with an inert fill gas. The inner end of the electrode is formed with a recess having a least spanning dimension S and a recess depth of D where S is greater the electron ionization mean free path but less than twice the cathode fall plus negative glow distances, throughout the glow discharge phase of starting, for the chosen fill gas composition and pressure (cold).