Topic
Reflector (antenna)
About: Reflector (antenna) is a research topic. Over the lifetime, 28730 publications have been published within this topic receiving 212618 citations.
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TL;DR: In this article, the radiation pressure on the surface of a waveguide formed by omnidirectionally reflecting mirrors was studied and it was shown that in the absence of losses, the pressure goes to infinity as the distance between the mirrors is reduced to the cutoff separation of the waveguide mode.
Abstract: We study the radiation pressure on the surface of a waveguide formed by omnidirectionally reflecting mirrors. In the absence of losses, the pressure goes to infinity as the distance between the mirrors is reduced to the cutoff separation of the waveguide mode. This divergence at constant power input is due to the reduction of the modal group velocity to zero, which results in the magnification of the electromagnetic field. Our structure suggests a promising alternative, microscale system for observing the variety of classical and quantum-optical effects associated with radiation pressure in Fabry–Perot cavities.
72 citations
Patent•
23 Sep 2009TL;DR: In this article, an optical member is inclined downward relative to a horizontal direction (an optical axis O of each LED 12) from a light emitting section 12a of each LEDs 12, and an area at and below a horizontal position of a lighting device 1 is illuminated by the lens section 21 while each LED12 is arranged at an optically ideal position relative to the lens sections 21.
Abstract: An optical axis O' of a lens section 21 of an optical member 20 is inclined downward relative to a horizontal direction (an optical axis O of each LED 12) from a light emitting section 12a of each LED 12. Therefore, an area at and below a horizontal position of a lighting device 1 is illuminated by the lens section 21 while each LED 12 is arranged at an optically ideal position relative to the lens section 21. Also, reflection surfaces 22c and 23c of upper and lower reflector sections 22 and 23 of the optical member 20 are respectively set based on parabolas P1 and P2 different from each other with focal points F1 and F2 positioned at each LED 12. Therefore, the area at and below the horizontal position of the lighting device 1 is illuminated respectively by the reflector sections 22 and 23 while each LED 12 is arranged at an optically ideal position relative to the reflector sections 22 and 23.
72 citations
TL;DR: In this paper, the authors presented a theoretical analysis of a tilted wick solar still with an external flat plate reflector, where the reflector is assumed to be able to be inclined forwards or backwards according to the seasons.
72 citations
Patent•
15 Nov 2010TL;DR: In this paper, a system that incorporates the teachings of the present disclosure may include, for example, a method involving capturing spectral interference from an optical coherence tomography imaging probe comprising a microelectro-mechanical system (MEMS) scanning mirror, and a partial reflector for supplying images to an image sensor.
Abstract: A system that incorporates teachings of the present disclosure may include, for example, a method involving capturing spectral interference from an optical coherence tomography imaging probe comprising a micro-electro-mechanical system (MEMS) scanning mirror, and a partial reflector for supplying images to an image sensor. Additional embodiments are disclosed.
72 citations
12 Mar 1991
TL;DR: In this paper, a flat parabolic surface (FLAPS) is proposed for the use of low-cost fabrication techniques to perform various collimating reflector functions, independently of any specific geometric shape, such as would be required with conventional reflectors.
Abstract: A technology applicable to the reflector antenna field is introduced. FLAPS (flat parabolic surface) allows the use of low-cost fabrication techniques to perform various collimating reflector functions, independently of any specific geometric shape, such as would be required with conventional reflectors. The various elements of control afforded by FLAPS technology allow versatile operation in a variety of simultaneous applications not normally compatible with conventional reflector designs. >
72 citations