Patent Number: 8,573,792

Title: Reflective mirror for solar thermal power generation

Abstract: Disclosed is a reflective mirror for solar thermal power generation comprising a metal film and provided thereon, a substrate, the reflective mirror reflecting sunlight entering from a substrate side, featured in that the substrate is a film composed of a resin containing microfibrillated cellulose. The reflective mirror maintains a light collecting ability, particularly a specular reflectance highly and stably against variation of weather conditions, when sunlight is collected outdoors, is usable over a long period of time, and has high durability.

Inventors: Bekku; Hiroshi (Hino, JP)

Assignee: Konica Minolta Opto, Inc.

International Classification: G02B 5/08 (20060101)

Expiration Date: 1/05/12017