Microlens array sheet and method of producing the same

Details Microlens array sheet and method of producing the same Microlens array sheet and method of producing the same

2011-01-04

2011-01-04

Martinez, Joseph (Department: 2873)

Optical: systems and elements

Lens

With light limiting or controlling means

Reexamination Certificate

active

07864450

ABSTRACT:
A microlens array sheet includes a light-shielding base having a first surface and a second surface opposite to the first surface and a microlens array attached to the first surface of the light-shielding base, the array having a plurality of microlens. The light-shielding base has a plurality of apertures that correspond to the microlenses. Each aperture has a conical trapezoid-like shape in which a size of each aperture on the first surface side is larger than another size of each aperture on the second surface side. Instead of the light-shielding base, the microlens array sheet may include a transparent base having a first surface and a second surface opposite to the first surface and a light-shielding layer, having a third surface and a fourth surface opposite to the third surface, provided on the second surface of the transparent base. The microlens array is attached to the first surface of the transparent base. The light-shielding layer has a plurality of apertures that correspond to the microlenses. Each aperture has a conical trapezoid-like shape in which a size of each aperture on the third surface side is larger than another size of each aperture on the fourth surface side.

REFERENCES:
patent: 6594079 (2003-07-01), Trott et al.

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