Abstract:
The invention relates to an illumination device (10) for illuminating a surface, with a lighting element (20) and an illuminating body (30), wherein the lighting element (20) emits an artificial light (21,21'), a housing element (40) comprises the lighting element (20) and supports the illuminating body (30), the illuminating body (30) comprises a transparent light conductive material and is generally overlying the surface, being illuminated. The invention discloses, that the illuminating body (30) comprises a light extraction layer (50), configured to receive and to deflect the artificial light (21,21') from the lighting element (20) onto the surface.
Abstract:
The invention relates to a method of measuring and/or judging the afterglow in ceramic materials, especially Gd2?2S materials and/or precursor materials by measuring the Eu-, Tb- and/or Yb-content.
Abstract:
A radiation detector (100) includes an array of scintillator pixels (102) in optical communication with a photosensor. The scintillator pixels (102) include a hygroscopic scintillator (104) and one or more hermetic covers (106a, 106b). A desiccant (124) may be disposed between a hermetic cover (106a) and the scintillator (104) or between the hermetic covers (106a, 106b).
Abstract:
This invention concerns the application of inorganic luminescent nanoscale particles, which exhibit optical transitions in the visible spectral range, which can be exploited for excitation purposes and which show an emission band or lines in the NIR range, preferably between 650 and 1100 nm. These nanoscale particles are eventually coated by SiO 2 or other inert oxides, e.g. Al2O3, in order to decrease toxicity and to enhance particle lifetime in living systems.
Abstract:
A luminescent concentrator for solar light is provided. The luminescent concentrator comprises a wavelength-selective filter, an energy concentrating area, and a luminescent material. The wavelength-selective filter is adapted to pass the solar light and to reflect light emitted by the luminescent material. Further, a method for concentrating solar light is provided. The method comprises the steps of (a) passing incident solar light through a wavelength-selective filter and an energy concentrating area onto a luminescent material, and (b) converting the incident solar light in the luminescent material to light having a wavelength reflectable by the wavelength-selective filter. The method further comprises a step (c) of concentrating the converted light in a pre-determined area arranged between the wavelength-selective filter and the luminescent material.
Abstract:
The present invention relates to a luminescent solar concentrator for a solar cell, comprising a collector with a luminescent substrate, and a wavelength selective filter, wherein the wavelength selective filter is arranged above the surface of the collector, wherein the luminescent substrate has an absorption edge which corresponds to a wavelength ?ex and emits radiation around a wavelength ?em, wherein the selective filter has a refractive-index contrast ?n with a negative or zero dispersion, and wherein the wavelength selective filter is designed to keep the emitted radiation inside the collector while shifting the reflection band of the incident radiation to angles = 25° and/or to narrow the reflection band to a range of = 10°.
Abstract:
The invention relates to a light emitting diode device comprising a light emitting layer (103) and a filter layer (105) arranged on a surface of the light emitting layer (103), the filter layer (105) being adopted to receive light from the light emitting layer, to pass light components within a predetermined angular range and not to pass light components outside the predetermined angular range.
Abstract:
The invention relates to a green emitting solid-state laser with green emitting transparent material, preferably of the material Y2O3, Gd2O3, Lu2O3, Sc2O3 and Er3+ and Ho3+ as doping ions. These materials have been found to be of excellent use for green emitting lasers.
Abstract translation:本发明涉及一种具有绿色发射透明材料,优选材料Y 2 O 3,Gd 2 O 3,Lu 2 O 3,Sc 2 O 3和Er 3+和Ho 3+作为掺杂离子的发射绿光的固态激光器。 已经发现这些材料对于发射绿光的激光器具有优异的用途。
Abstract:
A vehicle position measurement system (100) and method to determine the (relative) position of a vehicle (110) and an object (120) are proposed. The system comprises at least two light sources (131, 132) capable of emitting light and positioned at a predetermined distance (140) to each other. Furthermore the system comprises at least one detector (150 / 151, 152) capable of measuring the light emitted. The light emitted by the light sources comprises synchronized light source identification codes. The detector is arranged to determine the position of the vehicle (110) and object (120) on the basis of a phase-difference measurement between the light originating from the individual light sources (131, 132) and a comparison phase. The vehicle (110) may comprise the at least two light sources (131, 132) and the detector (151, 152), while the phase-difference is measured between light reflected from the object (120) and the comparison phase. Alternatively, the vehicle (110) may comprise the at least two light sources (131, 132) while the object (120) comprises the detector (150) and the detector is arranged to obtain the comparison phase from the light received from one of the light sources (131, 132). The object may be a vehicle.