Patent ID: 6682875
Filing Date: 2004-01-27
Classification: G03F,H05K

Abstract:
A process for etching a non-planer surface comprising:forming a concave nesting contour on a fiber optic array having a distal optical fiber surface and a proximal optical fiber surface, the concave nesting contour being present on the proximal fiber optic surface; nesting a surface of a convex non-planar article selected from the group consisting of cylinders, tubes, spheres and blocks against the nesting contour, the surface of the non-planar article having a photoresist composition thereon; providing radiation that is effective in altering solubility properties of the photoresist composition to the distal optical fiber surface; exposing in a first exposing step photoresist composition optically connected to the proximal optical fiber surface within the concave nesting contour in less than all areas of the photoresist composition within the concave nesting contour; developing the photoresist composition to remove photoresist composition corresponding to segments related to areas of photoresist that were exposed or not exposed to said radiation to form non-continuous areas on the convex non-planar article that are coated with photoresist composition; and contacting an etch solution for material of the convex non-planar article that will etch the material of the article more rapidly than it will dissolve the photoresist composition on the surface of the article.