Abstract: The device for generating an air flow for cooling a heat dissipating electronic element such as an LED comprises a channel (12,56) extending between an inlet portion (18) upstream of the air flow to be generated and an outlet portion (20) downstream of the air flow to be generated, wherein the channel (12,56) comprises at least two substantially opposite side surfaces (14). Moreover, the device is provided with a first bendable air ventilating blade (10,58) arranged within the channel (12,56) and having an overall longitudinal extension substantially coinciding with the extension of the channel (12,56), with a first longitudinal end (24,62) arranged upstream of the air ventilating blade (10,58) flow to be generated and a second end (28,70) arranged downstream of the air flow to be generated. The first air ventilating blade (10,58) with its first end (24,62) is fixedly arranged and has its second end (28,70) is reciprocatingly arranged.

Abstract: A method for controlling a mechanical vibrating element driven by a driving means includes operating the driving means at an operation frequency for stimulating the vibrating element to oscillate at this frequency. The method also includes adjusting the operation frequency of the driving means for stimulating the vibration element at different frequencies and of determining a respective energy consumption of the driving means depending on the frequency at which the vibrating element oscillates. The resonance frequency of the oscillation of the vibrating element is identified as the frequency at which the energy consumption of the driving means is lowest and the driving means for stimulating the vibrating element can be operated at the resonance frequency.

Abstract: A dual-color aviation Anti Collision Light (ACL) has a first set of LEDs that emit a substantially white beam of light and a second set of LEDs that emit a substantially red beam of light. The ACL can be operated in a first mode in which the red LEDs are excited by themselves so that the ACL produces a red beam of light In a second mode, the white LEDs and the red LEDs are excited simultaneously to produce a white beam of light having a chromaticity within the definition of Aviation White. Operating the red LEDs in the white mode has two synergistic effects. First, the red LEDs augment the luminous output of the white LEDs so that fewer white LEDs are required, thus saving cost and space. Second, the red LEDs shift the chromaticity of total light output toward the red region. This has the effect of compensating for the tendency of the white LEDs to become greener with age.

Abstract: A system for self-organizing and auto-configuring mesh networks is disclosed. Special nodes (deemed special for their topological significance) are used as a starting point for forming clusters of fully connected nodes. Here, all nodes can communicate directly with one another and links are scheduled to meet the traffic requirements as indicated by their individual configuration and topological positions. Links that do not interfere with each other are scheduled to operate concurrently, thereby increasing the bandwidth offered by the whole system. When a node leaves or is introduced to the system, the system will adjust with minimum impact on its operation. Once all of the clusters are formed in a system, the clusters are now capable of inter-cluster communications with an increase in bandwidth for such communications.

Abstract: A light for an aircraft comprises a holder for carrying a plurality of light emitting diodes arranged along a curvilinear line and a first optical unit comprising an elliptic reflective partial surface defining a plurality of focal points forming a first curvilinear focal line extending along the light emitting sites of the light emitting diodes, and a plurality of second focal points. The light further includes a second optical unit comprising a single further focal point or a plurality of further focal points forming a further curvilinear focal line. The plurality of the second focal points of the first optical unit coincide and are identical to the single further focal point of the second optical unit or are located along the further curvilinear focal line of the second optical unit.

Abstract: A device for illuminating a space comprising is discussed. In one variation, the device includes: a central body portion, with a length and a width, and including two plates running along the length of the central body portion wherein the two plates are separated by a spacer; an opening for the removal of heat during operation of the device that extends along a portion of the length of the central body portion, a light emitting diode on the central body portion; a reflector, extending from the central body portion, for reflecting light emitted by the light emitting diode towards the illuminated space. Other variations are also discussed as are methods for using suitable variations for retrofitting existing non-light emitting diode light sources.

Abstract: Feeding device for a geometrically closed lightguide (1) of the signal lamps of motor vehicles placed on both sides of the vehicle comprising a light feeder (4) and a geometrically closed lightguide (1). The two parts are joined and form a single plastic molding. A prism-shaped cavity (9) with total internal light reflection for a uniform light distribution at both sides of the enclosed lightguide (1) is formed at the site of their joint. A semi-transparent insert (16) is inserted in the prism-shaped cavity (9), made of material with a precise ratio of transparent and cloudy components to control the amount of unwanted light arising on the planar surfaces (10;11) of the prism-shaped cavity (9) with total internal light reflection.

Abstract: An adaptive projection system for the headlights of motor vehicles consists of a reflector (6) with light source (11), a lens (10), and a diaphragm system with a fixed screening diaphragm in the shape of a cradle and with a movable optical diaphragm (1) in the shape of a hyperboloid, cylindrical or conical sector (17, 18), which rotates at the same time as the shaft of the motor (3), on which it is firmly fastened at both sides by means of stanchions (2), and by its controlled stopping in certain positions it produces the required light beams.

Abstract: A remote lighting control system is for remote lighting control of a plurality of discharge lamps. This system has the installed electronic ballasts of each discharge lamp. Each electronic ballast has a transceiver and a controller, the transceiver exchanges control information with the controller. The control command contains the identifiable information to specify one of a plurality of electronic ballasts. When the transmitter is received the control command, the transceiver transfers the received control command to other electronic ballasts further. Moreover, if the control command is the one that the identifiable information specifies own ballasts, the control information based on the received control command is send to own controller, and the controller control the discharge lamp. According to this system, when a lot of lamps was arranged the factory etc. comparatively widely, the user's remote control is not limited to the narrow scope.

Abstract: The invention comprises a method for indicating that an LED flash light for an aircraft such as an anti-collision or beacon or strobe LED light has reached a near-end-of-life status, wherein the LED flash light under normal operational condition within a given time interval generates a predetermined number of normal flashes with the number being one or more than one, e.g. two. The method comprises the steps of determining the actual photometric condition of the LED flash light, and comparing the actual photometric condition to a given condition in a normal flashing mode. If the actual condition deviates from the given condition by more than a predetermined amount, the LED flash light is operated in order to generate within the given time interval one additional near-end-of-life-indicating flash.

Abstract: The warning lamp for an aircraft is provided with a housing (10) which possesses a light permeable cover (12) that is exposed to the surrounding air when the housing is mounted on the aircraft, with a frontal cover area and a rear cover area, a mounting element (44) to fasten the cover to a lower part (14) of the housing (10), wherein one edge (41) of the cover (12) is covered by an edge of the mounting element (44) and protrudes from it, a lamp with at least one LED (42,46,58,60), which is arranged within an area that is covered by the cover (12), and a cooling body (18) for the at least one LED (42,46,58,60), wherein the cooling body (18) possesses a cooling surface (32) that is exposed to the surrounding air when the housing (10) is mounted on the aircraft. The frontal cover area is formed by a frontal cover element (22) which is made from a light permeable first material. The rear cover area is formed by a rear cover element (28), which is made from a light permeable second material.

Abstract: An LED landing light arrangement for an aircraft comprises a plurality of LED light sources (12,14,16) for arrangement on an aircraft (24), primarily on the wing roots (20), on the front edges of the wings (22) and/or on the landing gears (18). The LED light sources (12,14,16) are operative to generate, relative to the central axis of the aircraft (24), a light distribution (10) ahead of the aircraft (24) that is spread substantially in a Y-shaped configuration in an obliquely downward direction. The light distribution (10) comprises two converging lateral regions (34,36) arranged laterally ahead of the aircraft (24), and a central region (40) running from said converging lateral regions (34,36) along an extension of said central axis and oriented in a direction away from the aircraft (24).

Abstract: A headlight for a motor vehicle with light unit for daytime and nighttime front navigation light and a supplemental distance light unit, in addition to an at least one optical module (3), with light source (2). The light sources (61, 62) of the supplemental unit (7) are supplied with alternating electric current, for creation of the front nighttime navigation light when supplied with low electric current, or the front daytime navigation light when supplied with medium electric current, and when supplied with the highest electric current, a supplemental distance beam in addition to the distance light beam emerging from the optical module (3).

Abstract: The present invention relates to a method for operating a predictive adaptive front lighting for a vehicle with headlamps and a controller. The method includes the steps of receiving a vehicle position; identifying a map location of the vehicle; determining a most likely path of the vehicle based on the map location; locating a target point on the most likely path of the vehicle; adaptively changing a distance between the vehicle and the target point; calculating a desired swivel angle for the vehicle headlamps based on the most likely path of the vehicle; and swiveling the headlamps according to the desired swivel angle.

Abstract: Systems and methods of providing illumination may be provided in accordance with the invention. A lighting unit may be provided comprising a plurality of light sources, each light source of said plurality being at least partially surrounded by an optical element, and a support configured to support the light source above a surface. The light sources may be light emitting plasma sources, and the support may be a high-mast support. In some embodiments, the optical element may be a reflector containing one or more facets, directing the light toward the surface. In some configurations, each light source of said plurality may be independently controllable and/or dimmable. A lighting unit may communicate with an external controller, which may provide instructions for controlling the light sources. A lighting system may be provided with a host controlling a plurality of lighting units, which may be organized into zones. The zones, lighting units, and/or light sources may be independently controllable.

Abstract: An integrated aircraft landing and taxi light includes upper and lower reflector regions in the shape of substantially circular segments and a central longitudinal third reflector region extending between the upper and lower reflector regions. Landing light LEDs are arranged within the upper and lower reflector regions and the outer portions of the central longitudinal reflector region with the diagonals of the LED dies oriented substantially along radial lines extending outward from the center of the light. Taxi light LEDs are arranged within the central and outer portions of the central longitudinal reflector region such that the sides of the LED dies are oriented substantially horizontally and vertically with respect to the aircraft.

Abstract: A flat refractive collimator assembly including a light guide and a light source, for example, an LED. The sides of the light guide defines a collimating reflective surface having a paraboloidal shape with a collimating focal point placed on the axis of the light guide. The central portion of the light guide defines a main reflective surface having a virtual focal point, which is substantially similar to the collimating focal point. The collimating reflective surface is a paraboloidal surface or is formed as a plurality of paraboloidal segments having various focal lengths and having a common collimating focal point. The collimating reflective surface can also include spread optics.

Abstract: An aircraft light for emitting light in a desired spatial angular region and with a desired light distribution, comprises a reflector having an upper reflector portion and a lower reflector portion both being symmetrical to a plane. A first row of LEDs are face away from the reflector. A second row of LEDs face towards the reflector. Each of the upper and lower portions of the reflector comprises first, second, and third reflective surfaces with the first reflective surface being convexly shaped, the second reflective surface being substantially flat, and the third reflective surface being partially parabolically shaped.

Abstract: A lighting device has a power-factor correction circuit 6, a step-down chopper circuit 8, a full-bridge circuit 10, control ICs for these circuits and a driving-voltage supply circuit 14. The supply circuit 14 supplies a driving voltage to the control ICs. The control IC outputs the on/off driving voltage to a switching element of the corresponding circuit 6 to 10. The lighting device also has a detector 16 and judgment equipment 18. The detector 16 detects the driving voltage supplied from the supply circuit 14. The judgment equipment 18 instructs the control ICs to start outputting the on/off driving voltages in the order from the control IC close to the power source 2 to the control IC close to the discharge lamp 4 when the driving voltage detected by the detector 16 reaches a predetermined value during the time when the driving voltage supplied from the supply circuit 14 rises.

Abstract: A multiparameter light is disclosed, which incorporates an LED (light emitting diode) tracking ring surrounding a main output lens. The LED tracking ring is capable of additive color mixing and in turn can simulate the color of the main projected light projecting from the main output aperture or output lens of the multiparameter light.