Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Including step of mold making
Patent
1993-12-08
1995-08-08
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Including step of mold making
264 17, 264 19, 425808, B29D 1100
Patent
active
054396212
ABSTRACT:
A method of making a microlens array where the microlenses have focal lengths which vary as a function of their geometric position in the array. The focal lengths of the microlenses at the center of the array are shorter than the microlenses at the periphery.
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Griswold Gary L.
Kirn Walter N.
Levinson Eric D.
Minnesota Mining and Manufacturing Company
Vargot Mathieu D.
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