Reflector (antenna)

About: Reflector (antenna) is a research topic. Over the lifetime, 28730 publications have been published within this topic receiving 212618 citations.

Lightguide having a directly secured reflector and method of making the same

Abstract: A lightguide (14, 32) includes an input edge surface (18), a back surface (20) and an output surface (22). A reflector (26) directly secured to the back surface (20) by, for example, adhesive bonding.

Light-emitting diode arrangement comprising a color-converting material

Abstract: Disclosed is a light-emitting diode (LED) arrangement (1) comprising an LED chip (2) that is disposed on a base (3) as well as color-converting material (7) which surrounds the LED chip (2) and is configured so as to convert at least some of the light emitted by the LED chip (2) into light having a different wavelength. The color-converting material (7) is laterally surrounded by a reflector (8). The maximum distance (x) between the LED chip (2) and the reflector (8) is 0.5 mm.

Optical electronic device with partial reflector layer

Abstract: An optical electronic device with a partial reflector layer is disclosed. The device includes a first reflector and a second reflector that define an optical cavity therebetween. The first and second reflectors are tuned to be selective of a visible wavelength at an intensity by optical interference. The second reflector includes at least one material having a refractive index and an extinction coefficient, each ranging between about 1 and about 5 across the visible spectrum. A mechanism is included which is configured to permit variation of the optical cavity.

Expandable panel and truss system/antenna/solar panel

Abstract: Disclosed is an expandable panel and truss structure capable of being stowed in a storage container (canister) for transportation into space and deployed to form structures such as antennas, solar panels or similar space or terrestial structures. The antenna formed comprises the panels stored as hinged pairs (sets) folded in accordian-like fashion together with the expandable trusses and other devices necessary for antenna space operation, such as attitude control and antenna feed. The panel sets are deployed from the canister to form a toroidal ring, circular in cross-section when deployed, for supporting the antenna lens and to form a feed support boom utilizing the canister as part of the antenna structure. The canister is connected to the ring and support boom in the deployed state by the expandable trusses. A fully automatic system is included for deploying the antenna and for holding the antenna structure in its deployed state. By adding a second (back) boom and reflector screen, a paraboloidal antenna is formed. In a second embodiment, utilizing the same storage and deployment principle but with panel sets which are triangular in cross-section, when deployed, either an offset (asymmetrical) paraboloidal or a feed horn type antenna structure is formed. In another embodiment of the invention, utilizing the same principle and with panel sets which are triangular in cross-section, when deployed, a solar panel array is formed. Also disclosed is a foldable truss geostationary platform and package for transfer into a geostationary orbit. Finally, an alternate mechanism is disclosed in the form of a pantograph for deploying panel sets to form a truss.

Vehicle control system and equipment

Abstract: A vehicle warning and control system and equipment is disclosed utilizing radio frequencies and the Doppler principle wherein one of the vehicle lights acts as the R.F. radiator, reflector, receiving antenna as well as an illuminator, and through standard circuitry supplies a warning signal or a brake activating signal.