Wireless optical charging system and charging method thereof
AssigneeIndustry Academy Cooperation Foundation of Sejong University
InventorsJin Yong Ha, Jae Yeong Lim, Tariq Shamim Khwaja
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Abstract
A wireless optical charging system according to the present invention includes a transmitter which transmits a laser beam as light with an energy increased by the resonance; and a receiving unit which receives light transmitted from the transmitter and converts an energy for some light among the received light into an electric energy to charge devices. Accordingly, the laser resonance power transfer technology is used to solve the limitation of the distance and harmfulness to the human body.
Claims22
A wireless optical charging system, comprising:
- a transmitter which transmits a wireless optical charging light source (optical source) beam as light with an energy increased by resonance;
- and
- a receiving unit which receives light transmitted from the transmitter and converts an energy for some light among the received light into an electric energy to charge devices,
- wherein the energy of light increases due to the resonance that occurs between the transmitter and the receiving unit due to the light reflected from the receiving unit to the transmitter,
- wherein the transmitter includes:
- a light source unit;
- a diffraction grating, a prism, or an arrayed waveguide grating which divides light received from the light source unit into wavelengths in a predetermined range to output the light onto a space;
- and
- a collimator which is disposed between the light source unit and any one of the diffraction grating, the prism, and the arrayed waveguide grating to convert light output from the light source unit into a collimated ray.
A wireless optical charging system, comprising:
- a transmitter which transmits a wireless optical charging light source (optical source) beam as light with an energy increased by resonance;
- and
- a receiving unit which receives light transmitted from the transmitter and converts an energy for some light among the received light into an electric energy to charge devices,
- wherein the energy of light increases due to the resonance that occurs between the transmitter and the receiving unit due to the light reflected from the receiving unit to the transmitter,
- wherein the transmitter includes:
- a light source unit;
- a width expansion unit which expands a width of light in order to increase reflectance of light which is incident into a retro-reflector of a receiver before light output from the light source unit is input to a diffraction grating;
- a diffraction grating which divides light received from the width expansion unit into wavelengths in a predetermined range to output the light onto a space;
- and
- a telescope which is formed at an output end of the diffraction grating to expand a FOV.
A wireless optical charging system, comprising:
- a transmitter which transmits a wireless optical charging light source (optical source) beam as light with an energy increased by resonance;
- and
- a receiving unit which receives light transmitted from the transmitter and converts an energy for some light among the received light into an electric energy to charge devices,
- wherein the energy of light increases due to the resonance that occurs between the transmitter and the receiving unit due to the light reflected from the receiving unit to the transmitter,
- wherein the transmitter includes:
- a light source unit;
- a light transfer mirror which transmits light received from the light source unit to the receiving unit;
- and
- a collimator which is disposed between the light source unit and the light transfer mirror to convert light output from the light source unit into a collimated ray.
Dependencies are inferred from the claim text.