DAYLIGHTING FILM

摘要

A daylighting film (1) according to one aspect of the present invention includes a base member (10) having optical transparency, first projections (11) having optical transparency and formed on an inner surface (10a) of the base member (10), a second projection (12) formed on the inner surface (10a) and having a height from the inner surface (10a) higher than a height of the first projections (11), a protective base member (13) arranged in an opposite relation to the inner surface (10a) of the base member (10), a bonding layer (14) for bonding the second projection (12) and the protective base member (13), and gaps (15) defined between the first projections (11) and between the first projection (11) and the second projection (12), wherein the first projections (11) include reflective surfaces (11c2) at which light incoming from an outer surface (13b) side of the protective base member (13) or the base member (10) is totally reflected.

主权项

1. A daylighting film comprising:
a first base member having optical transparency; a plurality of first projections having optical transparency and formed on a first surface of the first base member; a second projection formed on the first surface and having a height from the first surface higher than a height of the first projections; a second base member arranged in an opposite relation to the first surface of the first base member; an adhesive for bonding the second projection and the second base member; and gaps defined between the first projections and between the first projection and the second projection, wherein the first projections have reflective surfaces at which light incoming from a second surface side of the second base member or the first base member is totally reflected.