Patent ID: 11892665
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Optics (Instruments)
Classification: CPC G  F  B | IPC B  F  G

Claim 0:
1. 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.