Results 251 to 260 of about 450,897 (302)
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Light pipe for high intensity laser pulses
Physical Review Letters, 1993Optical guiding of intense laser pulses over a distance in excess of 20 Rayleigh lengths has recently been demonstrated1 using a two pulse technique. The first pulse prepares a shock-driven, axially extended radial electron density profile which guides a second pulse, injected after an optimum delay which increases with mass of the plasma ions.
, Durfee, , Milchberg
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Light Pipe Thermophotovoltaics (LTPV)
AIP Conference Proceedings, 2007In a conventional thermophotovoltaic (TPV) energy converter the radiation from the emitter to the photovoltaic (PV) array is transmitted in a vacuum or air where the index of refraction, n = 1. The intensity of the radiation is proportional to n2. Therefore, the incident intensity on the PV array could be greatly increase if the medium between the ...
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Solar Energy, 2010
An expression is given for the transmission of the rectangular-section mirror light pipe. The expression is used to model throughputs for simulated solar conditions over a calender year. It is found that the splaying of a mirror light pipe results in a significant increase in throughputs particularly in winter months.
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An expression is given for the transmission of the rectangular-section mirror light pipe. The expression is used to model throughputs for simulated solar conditions over a calender year. It is found that the splaying of a mirror light pipe results in a significant increase in throughputs particularly in winter months.
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Aluminized Polystyrene Light Pipes
Review of Scientific Instruments, 1964Hollow tubes made of thin aluminized polystyrene sheets were used to pipe light from scintillation and Cherenkov radiators to photomultipliers. The light collection was found to be more than adequate in the geometries tested.
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Science, 2010
As data transmission rates continue to increase, optoelectronic engineers are developing techniques to deal with the approaching “capacity crunch.”
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As data transmission rates continue to increase, optoelectronic engineers are developing techniques to deal with the approaching “capacity crunch.”
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Optical Review, 2007
A light pipe based laser beam shaper is proposed as a low loss approach to transfer a Gaussian laser beam into a long line beam with uniform distribution along the line direction for the applications of illumination or material processing. A telecentric relay optics has been used for solving the radiometric issues in the wide angle optics. In addition,
Chen, C.-H., Chen, C.-C., Liang, W.-C.
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A light pipe based laser beam shaper is proposed as a low loss approach to transfer a Gaussian laser beam into a long line beam with uniform distribution along the line direction for the applications of illumination or material processing. A telecentric relay optics has been used for solving the radiometric issues in the wide angle optics. In addition,
Chen, C.-H., Chen, C.-C., Liang, W.-C.
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Pioneer Venus Radiometer Light Pipes
Applied Optics, 1977We have written this note to show how tools and techniques from other fields of technology may be applied to optical fabrication problems. If the polished flats required on the light pipes shown in Fig. 1 are thought of as facets of a jewel, a natural connection is made with the lapidary trade.
Robert E. Parks +2 more
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Rectangular-section mirror light pipes
Solar Energy Materials and Solar Cells, 2008Using an integrated-ray approach an expression for the transmission of rectangular section mirror light pipe (MLP) has been derived for the case of collimated light input. The transmittance and the irradiance distribution at the exit aperture of rectangular-section MLPs have been measured experimentally and calculated theoretically for the case of ...
P.D. Swift +3 more
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Right angle bends in light pipes: analysis
Applied Optics, 1976An expression for the fraction of incident radiation transmitted by a right angle bend in a rectangular light pipe is derived. This expression is used to show that, in a planar light pipe structure with right angle bends, light attenuation is due only to reflection losses at the walls if the launching angle is 45 degrees .
M D, Wagh, B V, Rao
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Transport of Light by Optical Fibers and Light Pipes
2014The principle of propagation of light rays in a glass cylinder is the base of the technology of optical fibers. The fabrication of an optical fiber requires a coating (fiber cladding), whose refractive index is lower than that of the central part (fiber core).
Francini F, Fontani D, Sansoni P
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