摘要:
A solid-state light source (10) comprising a plurality of LED units (12) arrayed to emit light generally about an axis (14). Each of the LED units (12) can comprise a number of LEDs, for example, up to five. They may all emit in a single color or multiple colors can be combined for a specific effect. A light transmissive light guide (16) is associated with the LED units (12) and has a plurality of input widows (18). Each LED unit (12) faces a respective input window (18) and each window (18) transversely intercepts the axis (14) and receives light from the LED units (12). The input windows (18) lead to a common output window (20) that is axially aligned with the input windows (18). The light guide (16) has smooth sidewalls (22) that extend between the input windows (18) and the output window (20).
摘要:
A vehicle headlamp includes a first planar array of low and high beam LED light sources; a first primary optical light guide receiving low and high beam light from the LEDs; a first secondary optical light guide receiving and focusing collimated low and high beam light from the first primary light guide as a combination of low and high beam hot spots; a second planar array of LED light sources having a low and high beam LEDs; a second primary optical light guide receiving and collimating low and high beam light from second LED light sources; a second secondary optical light guide receiving said collimated low and high beam light and spreading the light as a combination of low and high beam spread pattern; a housing to mechanically support the LED arrays, the first primary optic, the first secondary optic, the second primary light guide and the second secondary optic.
摘要:
An LED and light guide assembly has an LED with an output surface; a first power input lead electrically coupled to a first pole and having a first surface and a second surface; and a second power input lead electrically coupled to a second pole and having a first surface and a second surface. A unitary, molded light guide has an axially extending, light transmissive body with a light output window. An input window is formed with the unitary, molded light guide being aligned in a zero-gap relationship to capture substantially all the light emitted by the LED. A support is formed integral with the light guide and envelopes a portion of the first surface and the second surface of the first power input lead and the first surface and the second surface of the second power input lead to anchor the guide with respect to the power inputs.
摘要:
A lamp component has a support with a base surrounded by an interior wall defining a cavity with a central axis. A plurality of LEDs are supported on the interior wall and generally aimed to direct light towards the central axis. A center piece has a first reflective surface shaped and positioned to intercept light received from the LEDs and reflect such received light generally in a direction parallel to the axis.
摘要:
A semiconductor structure configured for use in a VCSEL or RCLED. The semiconductor structure includes an oxidizing layer constructed from materials that can be oxidized during a lithographic process so as to create an oxide aperture. The semiconductor structure further includes a number of layers near the oxidizing layer. A passivation material is disposed on the layers near the oxidizing layer. The passivation material is configured to inhibit oxidation of the layers.
摘要:
A polarization pinned long wavelength vertical cavity surface emitting laser (VCSEL). The VCSEL includes a III V semiconductor substrate. A bottom DBR mirror is formed on the semiconductor substrate. An active region is formed in an off-axis orientation on the bottom DBR mirror. The active region includes a surfactant that suppresses unwanted three dimensional growth. A top DBR mirror formed on the active region.
摘要:
This disclosure concerns grating-coupled surface emitting (GSE) lasers with Gallium Arsenide (GaAs) substrates. In one example, a GSE laser includes a GaAs substrate, a lower cladding layer disposed on the substrate, a Dilute Nitride active region disposed on the lower cladding layer, and an upper cladding layer disposed on the active region.
摘要:
A high-density LED array (10) capable of presenting a density of X LEDs/unit area has a first printed circuit board (12) having X/2 LEDs/area and X/2 apertures arrayed therewith. A second printed circuit board (22) is spaced from the first printed circuit board (12) and has X/2 LEDs 28/unit area. The LEDs (28) on the second printed circuit board are aligned with the apertures (20) in the first printed circuit board. Each of the LEDs (28) on the second printed circuit board (22) has an optical fiber (30) associated therewith and each of the light guides (30) extends through one of the apterures (20). Each of the mounted LEDs on the first printed circuit board can have an optical fiber associated therewith and the light guides can be bundled to direct light to a remote source.
摘要翻译:能够呈现X LED /单位面积的密度的高密度LED阵列(10)具有第一印刷电路板(12),其具有X / 2 LED /面积和与其排列的X / 2孔径。 第二印刷电路板(22)与第一印刷电路板(12)间隔开并且具有X / 2 LED 28 /单位面积。 第二印刷电路板上的LED(28)与第一印刷电路板中的孔(20)对齐。 第二印刷电路板(22)上的每个LED(28)具有与其相关联的光纤(30),并且每个光导(30)延伸穿过其中一个(20)。 第一印刷电路板上的每个安装的LED可以具有与之相关联的光纤,并且光束可以被捆扎以将光引导到远程源。
摘要:
Disclosed is a structure for an active region of a GaAs based VCSEL with strong optical output substantially within the range of 1.3 μm and potentially for the 1.5 um range, making it well suited for the transmissivity of silica core fiberoptics. The active region of the VCSEL incorporates antimony in the quantum wells and portions of the barriers. The presence of Sb substantially smooths the surface of the barriers and quantum wells during the process of beam epitaxy, causing a higher critical thickness of each of the layers, thereby enabling fabrication with significantly reduced defects.
摘要:
A laser system having migration enhanced epitaxy grown substantially flat layers proximate to quantum wells of an active region. The flat layers may be grown at low temperature. This growth may result in flatter interfaces in the nitrogen containing quantum wells within the active region as well as lower trap densities in adjacent material. This may achieve a reduced trap density as well as reduced segregation resulting in a spectral luminescence profile revealing a single narrow peak with a high level of photoluminescence.