Lens sheet and producing method therefor

摘要

A lens sheet of the present invention comprises: a lens layer having a plurality of unit lenses, each of which is adapted to fully reflect a part of an incident light beam on a fully reflecting portion so as to emit it from a light emitting portion, arranged in a one- or two-dimensional direction on a light emitting side; and reflection attenuating layers for reflecting the light beam incident from an incident light side and attenuating the light beam incident from the light emitting side, the reflection attenuating layers being formed of a material, which can form the layers via a vacuum film forming method, on the fully reflecting portion.