Multi-wavelength led curing lamp
AssigneePhoseon Technology, Inc.
InventorsGarth Eliason, Doug Childers
Life of this patent
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Abstract
A curing device may comprise a first array of LED's, each LED of the first array emitting radiation substantially centered at a first excitation wavelength onto a quantum dot layer, the quantum dot layer positioned above the first array of LED's and configured to partially absorb the first excitation wavelength radiation and down convert the absorbed first excitation wavelength radiation, and partially transmit the emitted first excitation wavelength radiation, wherein the down converted and the partially transmitted first excitation wavelength radiation are directed onto a radiation-curable workpiece.
Claims20
A curing device, comprising:
- a first array of LED's, each LED of the first array emitting radiation substantially centered at a first excitation wavelength onto a quantum dot layer, the quantum dot layer positioned above the first array of LED's and configured to
- partially absorb the first excitation wavelength radiation and down convert the absorbed first excitation wavelength radiation, and
- partially transmit the emitted first excitation wavelength radiation,
- wherein the down converted and the partially transmitted first excitation wavelength radiation are directed onto a radiation-curable workpiece.
A method of curing a workpiece, comprising:
- emitting radiation substantially centered at a first excitation wavelength from an array of LED's onto a quantum dot layer;
- only partially transmitting the first excitation wavelength radiation through the quantum dot layer onto a radiation-curable workpiece;
- only partially absorbing the emitted first excitation wavelength radiation at the quantum dot layer;
- and
- responsive to absorbing the excitation wavelength radiation, down converting the absorbed first excitation wavelength radiation at the quantum dot layer and emitting the down converted radiation onto the radiation-curable workpiece.
A method, comprising:
- emitting UV radiation onto a quantum dot layer;
- only partially absorbing and down converting the UV radiation substantially centered at 365 nm at the quantum dot layer;
- and
- only partially transmitting the UV radiation substantially centered at 365 nm through the quantum dot layer.
Dependencies are inferred from the claim text.