Illuminating device
AssigneeEmpire Technology Development LLC
InventorHidekazu Hayama
Life of this patent
Estimating the term…
Abstract
An illuminating device is configured to include a light guide structure having a first light source configured to emit light of a first wavelength to excite at least one red fluorescent transparent substance; a second light source configured to emit light of a second wavelength to excite at least one green fluorescent transparent substance; and a third light source configured to emit light of a third wavelength to excite at least one blue fluorescent transparent substance.
Claims20
An illuminating device comprising:
- a light guide structure having a transparent member containing at least one red fluorescent transparent substance, at least one green fluorescent transparent substance, and at least one blue fluorescent transparent substance;
- a first light source configured to emit light of a first wavelength to excite the at least one red fluorescent transparent substance;
- a second light source configured to emit light of a second wavelength to excite the at least one green fluorescent transparent substance, wherein the green fluorescent transparent substance includes a terbium complex;
- and
- a third light source configured to emit light of a third wavelength to excite the at least one blue fluorescent transparent substance.
(canceled)
The illuminating device of claim 17, wherein the terbium complex includes a terbium ion and at least one chemical compound having a phosphate group coordinated to the terbium ion.
A light guide structure comprising:
- a transparent member containing at least one red fluorescent transparent substance capable of being excited at a first excitation wavelength, at least one green fluorescent transparent substance capable of being excited at a second excitation wavelength, wherein the green fluorescent transparent substance includes a terbium complex including a terbium ion and at least one chemical compound having a phosphate group coordinated to the terbium ion, and at least one blue fluorescent transparent substance capable of being excited at a third excitation wavelength.
A method of manufacturing a transparent fluorescent substance for white light emission, the method comprising:
- providing at least one red fluorescent transparent substance capable of being excited at a first excitation wavelength;
- providing at least one green fluorescent transparent substance capable of being excited at a second excitation wavelength;
- providing at least one blue fluorescent transparent substance capable of being excited at a third excitation wavelength;
- and
- combining the red, green, and blue fluorescent transparent substances to form a mixture of the red, green, and blue fluorescent transparent substances that emits white light in response to applied light of the first, second, and third excitation wavelengths, wherein a ratio of the red fluorescent transparent substance to the mixture is greater than about 25% but less than about 65% by weight, a ratio of the green fluorescent transparent substance to the mixture is greater than about 20% but less than about 60% by weight, and a ratio of the blue fluorescent transparent substance to the mixture is greater than 0% but less than about 40% by weight.
(canceled)
A method of generating white light, the method comprising:
- emitting light of a first wavelength from a first light source;
- emitting light of a second wavelength from a second light source;
- emitting light of a third wavelength from a third light source;
- and
- guiding the light of the first, second, and third wavelengths to a light guide structure having a transparent member containing at least one red fluorescent transparent substance capable of being excited at the first wavelength, wherein the red fluorescent transparent substance includes a europium complex including a europium ion and at least one chemical compound having a phosphate group coordinated to the europium ion, at least one green fluorescent transparent substance capable of being excited at the second wavelength, wherein the green fluorescent transparent substance includes a terbium complex including a terbium ion and at least one chemical compound having a phosphate group coordinated to the terbium ion, and at least one blue fluorescent transparent substance capable of being excited at the third wavelength.
Dependencies are inferred from the claim text.