Microlens array sheet and manufacturing method thereof

Optical: systems and elements – Single channel simultaneously to or from plural channels – By surface composed of lenticular elements

Reexamination Certificate

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Details

C264S001320

Reexamination Certificate

active

11233374

ABSTRACT:
A microlens array sheet and a manufacturing method thereof. The microlens array sheet comprises: a transparent substrate; bases formed on the transparent substrate, the bases having the same height as a result of a planarization process conducted for the upper portions of the bases, microlenses formed on the bases; and a gap-filling film applied on the resulting structure, in which the bases have the same height. The method comprises the steps of: depositing base-forming molds on a transparent support substrate or film and loading a material to be used as bases between the base-forming molds; polishing the upper portion of the material for use as bases so as to form bases having the same level, and removing the base-forming molds; depositing microlenses on the formed bases; and depositing a gap-filling film on the resulting structure.

REFERENCES:
patent: 4952026 (1990-08-01), Bellman et al.
patent: 5252840 (1993-10-01), Shiomi et al.
patent: 6621637 (2003-09-01), Uchiyama et al.
patent: 2003/0136759 (2003-07-01), Mikolas
patent: 2005/0002106 (2005-01-01), Hasei
patent: 1 411 376 (2004-04-01), None
patent: 1 602 945 (2005-12-01), None

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