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US 2023/0313974 A1Published application
Photoconversion device and illumination system
AssigneeKYOCERA Corporation
InventorsNoritaka NIINO, Ryuji YAMADA
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Abstract
A photoconversion device includes a first wavelength converter and a long-pass filter. The first wavelength converter receives excitation light from an output portion and emits fluorescence having a longer wavelength than the excitation light. The long-pass filter transmits the fluorescence emitted by the first wavelength converter and reflects the excitation light transmitted through or reflected from the first wavelength converter to enter the first wavelength converter.
Claims13
A photoconversion device, comprising:
- a first wavelength converter configured to receive excitation light from an output portion and emit fluorescence having a longer wavelength than the excitation light;
- and
- a long-pass filter configured to transmit the fluorescence emitted by the first wavelength converter and reflect the excitation light transmitted through or reflected from the first wavelength converter to enter the first wavelength converter.
An illumination system, comprising:
- a light-emitting module configured to emit excitation light;
- a first optical transmission fiber configured to transmit the excitation light from the light-emitting module;
- a relay including a photoconversion device configured to receive the excitation light transmitted by the first optical transmission fiber and emit fluorescence;
- a second optical transmission fiber configured to transmit the fluorescence from the relay;
- and
- an optical radiation module configured to radiate the fluorescence transmitted by the second optical transmission fiber into an external space.
3 more elements
Dependencies are inferred from the claim text.