Colloidal crystal structure, and light-emitting device and lighting system using same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsRyosuke Shigitani, Shumpei Fujii
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Abstract
A colloidal crystal structure includes a colloidal crystal layer including a plurality of colloidal particles and a binder disposed between the plurality of colloidal particles to fix the colloidal particles, and a refractive index control material that is provided on one surface of the colloidal structural layer, is transparent, and has a refractive index difference of less than 10% with respect to the binder. A light-emitting device includes an optical filter including the colloidal crystal structure, and a light source, and a part of primary light emitted by the light source passes through the optical filter. A lighting system includes the light-emitting device.
Claims16
A colloidal crystal structure comprising:
- a colloidal crystal layer comprising a plurality of colloidal particles, and a binder disposed between the plurality of colloidal particles to fix the colloidal particles;
- and
- a refractive index control material that is provided on one surface of the colloidal crystal layer, is transparent, and has a refractive index difference of less than 10% with respect to the binder,
- wherein the plurality of colloidal particles forms a three-dimensionally regular array in the binder, and the regular array adopted by the plurality of colloidal particles is a close-packed structure, a face-centered cubic structure or a body-centered cubic structure, and
- wherein the colloidal particles are spaced apart from one another, and the binder is interposed between the colloidal particles.
A colloidal crystal structure comprising:
- a colloidal structural layer comprising a plurality of types of colloidal particles, and a binder disposed between the plurality of types of colloidal particles to fix the colloidal particles;
- and
- a refractive index control material that is provided on one surface of the colloidal structural layer, is transparent, and has a refractive index difference of less than 10% with respect to the binder,
- wherein the plurality of types of colloidal particles comprises at least first colloidal particles and second colloidal particles that are different in average particle size from each other,
- the first colloidal particles and the second colloidal particles have coefficients of variation of particle size, each being less than 20%,
- the plurality of types of colloidal particles forms a three-dimensionally regular array in the binder, and the regular array adopted by the plurality of colloidal particles is a close-packed structure, a face-centered cubic structure or a body-centered cubic structure, and
- the colloidal particles are spaced apart from one another, and the binder is interposed between the colloidal particles.
Dependencies are inferred from the claim text.