Method of forming curved surfaces by etching and thermal process

Details Method of forming curved surfaces by etching and thermal process Method of forming curved surfaces by etching and thermal process

1994-09-27

1997-04-08

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

264 121, 264 132, 264 136, B29D 1100

Patent

active

056184743

ABSTRACT:
A smooth contoured structure is formed from a planar surface by etching mesas of equal height into the surface and heat treating the structure to mass transport material above the desired contour to fill in voids below the desired contour. In an alternate embodiment, an optical element is formed using a patterned layer of sacrificial material and thermally treating the sacrificial layer to form a precursor contour line. The line is then transformed onto a substrate and smoothed to form the optical element.

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