Results 111 to 120 of about 25,025 (163)
Some of the next articles are maybe not open access.
Loss mechanisms in optical light pipes
Applied Optics, 1992A geometrical optics approach is used to develop a theoretical model for analyzing loss mechanisms in optical light pipes. Five mechanisms are identified: intrinsic absorption, bulk scattering, losses that are due to roughness at the core-cladding interface, losses that are due to large-scale defects at the core-cladding interface, and losses that are ...
J T, Remillard, M P, Everson, W H, Weber
openaire +2 more sources
Archives of Ophthalmology, 1996
Modern vitreous surgery has been greatly facilitated, if not made possible, by the intraocular fiberoptic light pipe. In its current state, the light pipe is a straight, bright illuminator that allows direct visualization of what it shines on. 1 This is limiting when used with small opacities that have a refractive index similar to their surroundings ...
P J, Kertes, G A, Peyman
openaire +2 more sources
Modern vitreous surgery has been greatly facilitated, if not made possible, by the intraocular fiberoptic light pipe. In its current state, the light pipe is a straight, bright illuminator that allows direct visualization of what it shines on. 1 This is limiting when used with small opacities that have a refractive index similar to their surroundings ...
P J, Kertes, G A, Peyman
openaire +2 more sources
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
openaire +2 more sources
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 ...
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
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.
openaire +1 more source
Science, 2010
As data transmission rates continue to increase, optoelectronic engineers are developing techniques to deal with the approaching “capacity crunch.”
openaire +2 more sources
As data transmission rates continue to increase, optoelectronic engineers are developing techniques to deal with the approaching “capacity crunch.”
openaire +2 more sources
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.
openaire +2 more sources
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.
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source