Topic
Parabolic reflector
About: Parabolic reflector is a research topic. Over the lifetime, 3375 publications have been published within this topic receiving 30735 citations. The topic is also known as: paraboloid reflector & paraboloidal reflector.
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TL;DR: In this paper, a novel OWC system comprising of a cylindrical OWC WEC and a parabolic wave reflector was proposed and a revolutionary breakthrough in the hydrodynamic efficiency was obtained.
11 citations
Patent•
31 Jan 1989
TL;DR: In this paper, the planar reflectors are arranged with respect to the focusing element so that each planar reflectsor cooperates with a different portion of the focusing elements to project onto an IR detector located at the focus of such focusing element a relatively constant size image of a given target.
Abstract: A passive infrared detection system includes a reflective optical system comprising a focusing element (e.g. an elliptical or parabolic reflector) having an apparent focal length dependent upon the displacement of incident rays from the optical axis of such element, and a plurality of planar reflectors arranged at different angles with respect to such optical axis to provide the detection system with a plurality of different zones of detection, each having a different maximum detection range associated with it. According to the invention, the planar reflectors are arranged with respect to the focusing element so that each planar reflector cooperates with a different portion of the focusing element to project onto an IR detector located at the focus of such focusing element a relatively constant size image of a given target located at the maximum detection range associated with that planar reflector. Such an optical system provides the detection system with more uniform sensitivity from one zone of detection to another.
11 citations
Patent•
14 Apr 2010
TL;DR: In this paper, a tail fiber coupling output device of a laser diode array/area array is described, which relates to beam shaping and coupling of a semiconductor laser, and is used for manufacturing a high-efficiency high-power tail fiber output laser diodes/area arrays.
Abstract: The invention discloses a tail fiber coupling output device of a laser diode array/area array, relates to beam shaping and coupling of a semiconductor laser, and is used for manufacturing a high-efficiency high-power tail fiber output laser diode array/area array A luminous surface of the laser diode array or area array with fast axis collimation is closely attached with a rectangular or square input end surface of an optical fiber cone; the tail end of the optical fiber cone with the rectangular or square input end surface is positioned on the focus of a first parabolic reflector or the focus of a second parabolic reflector; the first parabolic reflector or the second parabolic reflector are arranged on the focus on one side of a first spherical focusing lens or a second spherical focusing lens respectively; and a single mode optical fiber or a double-coated optical fiber is respectively positioned on the focus on the other side of the first spherical focusing lens or the second spherical focusing lens
11 citations
Patent•
14 Apr 1990
TL;DR: In this paper, an antenna with a parabolic reflector and at least one supply line is specified, on whose free end an exciter is fitted, and the supply line (2) is constructed as a bending-resistant, tubular component of metal.
Abstract: An antenna with a parabolic reflector (1) and at least one supply line (2) is specified, on whose free end an exciter is fitted. The supply line (2) is constructed as a bending-resistant, tubular component of metal. It projects through a central opening (5) of the reflector (1) and is fixed to the same by means of a metallic retaining flange (7). For simple, corrosion-free and dimensionally accurate installation, the retaining flange (7) is soldered circumferentially to the supply line in the course of prefabrication.
11 citations
Patent•
23 Sep 2011
TL;DR: A quasi-parabolic reflector and method for a solar concentrator which produces a unique radiation pattern which is less susceptible to surface defects, less sensitive to target distance irregularities, and having greater uniformity of intensity for PV applications in comparison to that produced by true parabolic reflectors are provided in this article.
Abstract: A quasi-parabolic reflector and method are provided for a solar concentrator which produces a unique radiation pattern which is less susceptible to surface defects, less sensitive to target distance irregularities, and having greater uniformity of intensity for PV applications in comparison to that produced by true parabolic reflectors. Cross-sections of the quasi-parabolic reflector include spaced reflective surfaces which have focal areas spaced one from the other about an axis of symmetry. A method for forming petals of a quasi-parabolic reflector includes stamping them into shape using a stamping apparatus with a higher radius of curvature than the finished petal and iteratively testing and stamping the petal until the petal passes or fails a quality and accuracy threshold.
10 citations