MICROLENS ARRAY AND LIQUID CRYSTAL PANEL

摘要

PROBLEM TO BE SOLVED: To provide a new microlens array having two or more film layers on a transparent substrate.SOLUTION: A microlens array comprising two-dimensionally arranged microlenses 10A having the same positive refractive power is provided, which includes: a transparent substrate 11A disposed on a light-entering side and having microlens surfaces A1A formed by concave surfaces on a light-exiting surface side, two-dimensionally arranged into an array; and a light guide layer 12A formed on the light-exiting side of the transparent substrate. The light guide layer comprises two or more vapor deposition films 121A, 122A of an inorganic material deposited along a light guide direction, in which a surface A3A on the light-exiting side is planar; the two or more vapor deposition films have different refractive indices in adjoining films; at least one interface between the films has a minute concave curved surface A2A corresponding one-on-one to each microlens surface A1A formed by the concave surface; and each vapor deposition film has a thickness in an order of several μm. The microlens array has an optical function of imparting a tendency of converging in the light guide layer 12A by each microlens to a luminous flux coming from the transparent substrate side to exit.SELECTED DRAWING: Figure 2