Abstract:
A system including a panel (2212), a light emitting device (2202), and an optical component (2208) disposed in an optical path (2206, 2210) from the light emitting device (2202) to the edge (2211) of the panel (2212). The optical component (2208) includes an aperture, wherein a ratio of the area of the surface of the light emitting device (2202) to the area of the aperture is from about 0.5 to about 1.1.
Abstract:
Light-emitting devices can include a package that supports one or more light-emitting die (e.g., light-emitting diode die, laser diode die) and which can ensure mechanically stability, can facilitate electrical and/or thermal coupling with light-emitting die, and can manipulate the manner by which light generated by the die is emitted out of the light-emitting device. The package can also facilitate the integration of the light-emitting devices in various components and systems. For example, suitable packages may facilitate the use of light-emitting devices in components and systems such as light-emitting panel assemblies, LCD back lighting, general lighting, decorative or display lighting, automotive lighting, and other types of lighting components and systems.
Abstract:
Illumination systems, which include at least one light source (e.g., LED and/or laser diode), light sensor, and a power source are described. In certain embodiments, a light sensor and a microprocessor are used to detect light emitted by a light source and to adjust the power signal provided to the light source at least partially based on the detected light. Some embodiments may enable the color point and/or brightness of the emitted light to be controlled at least partially based on the detected light. The illumination systems may be designed to be used as a liquid crystal display (LCD), general lighting apparatus, or any other illumination device.
Abstract:
Light-emitting devices including a layer with a dielectric function that varies spatially as a pattern to improve light extraction from the top surface of the device.
Abstract:
The invention relates to light-emitting devices, and related components, systems and methods. The invention features a light-emitting device (100) that includes a multi-layer stack of materials (122). The multi-layer stack of materials includes a light-generating region (130) and a first layer supported by the light generating region. The surface of the first layer has a dielectric function that varies spatially according to a pattern, and the pattern has an ideal lattice constant and detuning parameter with a value greater than zero.
Abstract:
An optical device includes an LED (100) in the form of a package die. The LED further includes a multi-layer stack (122) disposed on submount (120). The multi-stack includes a thick doped silicon layer (134) having a pattern of opening (150) in its upper surface (110). An encapsulant layer (144) is present between the silicon layer and a cover slip (140) and support (142). The encapsulant layer does not extend into openings (150).
Abstract:
Display systems, such as liquid crystal display systems (LCDs) that include light-emitting diodes (6) as light sources are described. In certain embodiments, high-brightness LEDs are used to illuminate the display system, in combination with thermal management systems and other components described herein (121). The systems may be designed to use fewer numbers of LEDs for illumination while achieving a brightness comparable to, or exceeding, certain existing display systems of similar size.