Results 221 to 230 of about 32,036 (281)
Collection and concentration of solar energy using Fresnel type lenses
, 1975 Ray F. Wilson
openalex +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Linear Fresnel lens concentrators
Solar Energy, 1975Abstract The use of the linear Fresnel lens as a seasonally adjusted or one-axis tracked solar concentrator is investigated. Ray tracing techniques are used to show that this type of concentrator is very good in the period of time within 1 hr of solar noon.
D.T. Nelson, D.L. Evans, R.K. Bansal
openaire +1 more source
Applied Optics, 1986
We propose a technique to manufacture Fresnel lenses where the grooves are phase-synchronized at a given wavelength. This means that the light from different grooves will superpose coherently at the focal point at the specified wavelength. The focusing performance of such a “tuned” Fresnel lens will be better than that of ordinary Fresnel lenses by ...
openaire +2 more sources
We propose a technique to manufacture Fresnel lenses where the grooves are phase-synchronized at a given wavelength. This means that the light from different grooves will superpose coherently at the focal point at the specified wavelength. The focusing performance of such a “tuned” Fresnel lens will be better than that of ordinary Fresnel lenses by ...
openaire +2 more sources
Three-zone multifocus hybrid Fresnel lens concentrator
Applied Optics, 2021In this paper, we designed a three-zone multifocus hybrid Fresnel lens concentrator without a homogenizer. This concentrator uses three types of prisms: a refractive prism, a single total internal reflection (STIR) prism, and a double TIR (DTIR) prism.
Ya-Chi, Lu, Jui-Wen, Pan
openaire +2 more sources
2001
Studying Fresnel lenses means understanding geometrical optics. As Fresnel lenses are essentially chains of prisms, the optics of the prism play a vital part in designing Fresnel lenses. Geometrical optics is well understood, and this knowledge is readily available in handbooks [21, 66, 157].
Ralf Leutz, Akio Suzuki
openaire +1 more source
Studying Fresnel lenses means understanding geometrical optics. As Fresnel lenses are essentially chains of prisms, the optics of the prism play a vital part in designing Fresnel lenses. Geometrical optics is well understood, and this knowledge is readily available in handbooks [21, 66, 157].
Ralf Leutz, Akio Suzuki
openaire +1 more source
Ion implanted Bragg–Fresnel lens
Review of Scientific Instruments, 1996We have investigated the feasibility of widening the bandpath of the Bragg–Fresnel optical element through the use of ion implantation. The focusing properties of Bragg–Fresnel lenses (BFLs) were studied as a function of the implantation dose and energy. An enhancement of the focus intensity of up to 15% was found, which is less than expected.
A. Souvorov +3 more
openaire +1 more source