Illuminating equipment with a liquid-filled light guide
OwnerGunther Nathinventor
Life of this patent
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Abstract
Illuminating equipment with a light source and a liquid light guide, which is coupled optically to the light source and the liquid core of which contains a mixture of heavy and light water in a ratio by volume of 50:50 to 98:2, depending on the length of the light guide. The light guide transfers the visible range of the spectrum in a color-neutral manner. At the same time, the long-wave radiation, which causes unwanted heating effects, is suppressed.
Claims14
Illuminating equipment with a light source and a liquid-filled light guide, which contains a tube-like envelope of a fluorine-containing polymer material having a given refractive index and a core of an aqueous liquid, said liquid having a refractive index larger than that of said polymer material so that light propagating within said liquid core is totally reflected at the core-envelope interface, said liquid core containing a mixture of heavy water and 2 to 50% by volume of light water.
A liquid-filled light guide, which comprises a tube-like envelope of a fluorine-containing polymer material and a core of an aqueous liquid, wherein said liquid core is comprised of solution of calcium chloride in a mixture of heavy water and 2 to 20% by volume of light water and hydrochloric add in such an amount that the pH value of the solution is between 4 and 6.5.
A liquid-filled light guide, which comprises a tube-like envelope of a fluorine-containing polymer material and a core of an aqueous liquid, wherein said liquid core is comprised of a solution of calcium chloride in a mixture of heavy water and 2 to 20% by volume of light water and hydrochloric acid in such an amount that the pH value of the solution is at most 7.
Dependencies are inferred from the claim text.