Wavelength conversion element, light source apparatus and image projection apparatus
AssigneeCanon Kabushiki Kaisha
InventorMasayuki Abe
Life of this patent
Estimating the term…
Abstract
The wavelength conversion element includes a quantum dot layer containing at least one of quantum dots and quantum rods, the quantum dots and rods converting a first light from a light source into a second light whose wavelength is different from that of the first light, and a fluorescent body layer containing a fluorescent body that converts the first light into a third light whose wavelength is different from that of the first light. The quantum dot layer and the fluorescent body layer are arranged in this order from a light entrance side on which the first light enters the wavelength conversion element or in reverse order. The second light and the third light exit from the quantum dot layer.
Claims11
A wavelength conversion element comprising:
- a quantum dot layer containing at least one of quantum dots and quantum rods, the quantum dots and rods converting a first light from a light source into a second light whose wavelength is different from that of the first light;
- and
- a fluorescent body layer containing a fluorescent body that converts the first light into a third light whose wavelength is different from that of the first light,
- wherein:
- the quantum dot layer and the fluorescent body layer are arranged in this order from a light entrance side on which the first light enters the wavelength conversion element or in reverse order;
- and
- the second light and the third light exit from the quantum dot layer.
A light source apparatus comprising:
- a light source;
- and
- a wavelength conversion element,
- wherein the wavelength conversion element includes:
- a quantum dot layer containing at least one of quantum dots and quantum rods, the quantum dots and rods converting a first light from the light source into a second light whose wavelength is different from that of the first light;
- and
- a fluorescent body layer containing a fluorescent body that converts the first light into a third light whose wavelength is different from that of the first light, and
- wherein:
- the quantum dot layer and the fluorescent body layer are arranged in this order from a light entrance side on which the first light enters the wavelength conversion element or in reverse order;
- and
- the second light and the third light exit from the quantum dot layer.
An image projection apparatus comprising:
- a light source apparatus;
- and
- a light modulator configured to modulate light from the light source apparatus depending on an input video signal, the light modulated by the light modulator being projected to a projection surface,
- wherein the light source apparatus includes;
- a light source;
- and
- a wavelength conversion element,
- wherein the wavelength conversion element includes:
- a quantum dot layer containing at least one of quantum dots and quantum rods, the quantum dots and rods converting a first light from the light source into a second light whose wavelength is different from that of the first light;
- and
- a fluorescent body layer containing a fluorescent body that converts the first light into a third light whose wavelength is different from that of the first light, and
- wherein:
- the quantum dot layer and the fluorescent body layer are arranged in this order from a light entrance side on which the first light enters the wavelength conversion element or in reverse order;
- and
- the second light and the third light exit from the quantum dot layer.
Dependencies are inferred from the claim text.