Radiation-emitting device
AssigneeOSRAM Opto Semiconductor GmbH
InventorsTomin Liu, T'ing Qi'ao Leow, Keng Chong Lim
Life of this patent
Estimating the term…
Abstract
A radiation-emitting device may include a radiation-emitting semiconductor chip configured to emit electromagnetic radiation of a first wavelength range from a radiation exit surface, a first phosphor configured to convert electromagnetic radiation of the first wavelength range into electromagnetic radiation of a second wavelength range. The second wavelength range may be or include infrared light. The device may further include an up-converting phosphor configured to convert infrared light of the second wavelength range into visible light.
Claims17
A radiation-emitting device comprising:
- a radiation-emitting semiconductor chip configured to emit electromagnetic radiation of a first wavelength range from a radiation exit surface;
- a first phosphor configured to convert electromagnetic radiation of the first wavelength range into electromagnetic radiation of a second wavelength range, said second wavelength range comprising infrared light;
- an up-converting phosphor comprising at least two different types of activator ions enabling multi-photon processes, wherein the up-converting phosphor is configured to convert infrared light of the second wavelength range already converted by the first phosphor into visible light.
A radiation-emitting device comprising:
- a radiation-emitting semiconductor chip configured to emit electromagnetic radiation of a first wavelength range from a radiation exit surface;
- a first phosphor configured to convert electromagnetic radiation of the first wavelength range into electromagnetic radiation of a second wavelength range, said second wavelength range comprising infrared light;
- an up-converting phosphor configured to convert infrared light of the second wavelength range into visible light, wherein the up-converting phosphor comprises up-converting nanoparticles coated with an organic dye.
A radiation-emitting device comprising:
- a radiation-emitting semiconductor chip configured to emit electromagnetic radiation of a first wavelength range from a radiation exit surface;
- a first phosphor configured to convert electromagnetic radiation of the first wavelength range into electromagnetic radiation of a second wavelength range, said second wavelength range comprising infrared light;
- an up-converting phosphor configured to convert infrared light of the second wavelength range into visible light;
- a second phosphor configured to convert electromagnetic radiation of the first wavelength range into electromagnetic radiation of a third wavelength range, said third wavelength range ranging from yellow to green light.
Dependencies are inferred from the claim text.