Method of making a microlens array and mold

Details Method of making a microlens array and mold Method of making a microlens array and mold

1992-10-28

1994-04-05

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Including step of mold making

264 14, 264 17, 264 19, 425808, B29D 1100

Patent

active

053002636

ABSTRACT:
A method of making a microlens array and mold, and the articles made therefrom. The method involves forming a plurality of adjacent receptacles on a surface and partially filling the receptacles with a hardenable liquid, thereby forming a meniscus in each receptacle. A lens material can then be applied to the menisci, thereby forming an array of generally spherical microlenses. In one embodiment, the perimeters of the microlenses are modified rectangles in that each edge of the lens is a symmetrical elliptical arc, the ends of which terminate at the corners of the rectangle, and the middle of which curves toward the center of the rectangle.

REFERENCES:
patent: 2854337 (1953-09-01), Pearson
patent: 4243618 (1981-01-01), Van Arnam
patent: 4478769 (1984-10-01), Pricone et al.
patent: 4528260 (1985-07-01), Kane
"Microlens Arrays for Solar Astrometry" by Guy Artzner, Microlens Arrays, M. C. Hutley, editor, May 1, 1991, pp. 91-96.
"Fabrication and Testing of Monolithic Lenslet Module (MLM) Arrays," by D. D'Amato et al., Optical Fabrication and Testing, 1990 Technical Digest Series, vol. 11, Optical Society of America, Jun. 12, 1990.
"Micro-Optics: Monlithic Lenslet Modules" sales brochure from United Technologies Adaptive Optics Assoc., Cambridge, Mass., Jun. 1992.

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