Wavelength conversion element, light source device, and projector
AssigneeSeiko Epson Corporation
InventorToshiaki Hashizume
Life of this patent
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Abstract
The wavelength conversion element includes a phosphor layer having a plurality of phosphor particles and a binder configured to bind one of the phosphor particles adjacent to each other and another of the phosphor particles adjacent to each other out of the plurality of phosphor particles, an antireflection layer disposed on an incident side of the excitation light with respect to the phosphor layer, and a substrate provided with the phosphor layer, wherein the binder includes glass, and the binder binds a part of a surface of the one of the phosphor particles and a part of a surface of the another of the phosphor particles to each other.
Claims19
A wavelength conversion element comprising:
- a phosphor layer having a plurality of phosphor particles and a binder that binds one of the phosphor particles adjacent to another one of the phosphor particles;
- an antireflection layer on a side of the phosphor layer where excitation light is incident;
- and
- a substrate provided with the phosphor layer, wherein
- the binder includes glass,
- the binder binds a part of a surface of the one of the phosphor particles and a part of a surface of the other one of the phosphor particles to each other, and
- each of the one of the phosphor particles and the other one of the phosphor particles has part of the surface which is not bound to the binder.
A wavelength conversion element comprising:
- a phosphor layer having a plurality of phosphor particles, a binder, and a respective antireflection layer on a surface of each of the plurality of phosphor particles;
- and
- a substrate provided with the phosphor layer, wherein
- the binder includes glass,
- the binder binds a part of the antireflection layer on the surface of one of the phosphor particles and a part of the antireflection layer on the surface of the other of the phosphor particles to each other, and
- each of the one of the phosphor particles and the other one of the phosphor particles has part of the surface which is not bound to the binder.
A wavelength conversion element comprising:
- a phosphor layer having a plurality of phosphor particles, a binder, and a respective antireflection layer on a surface of each of the plurality of phosphor particles;
- and
- a substrate provided with the phosphor layer, wherein
- the binder includes glass,
- the binder binds a part of the surface of a first one of the phosphor particles and a part of the antireflection layer on the surface of a second one of the phosphor particles to each other, and
- each of the first one of the phosphor particles and the second one of the phosphor particles has part of the surface which is not bound to the binder.
Dependencies are inferred from the claim text.