Machining techniques for retroreflective cube corner article and

Details Machining techniques for retroreflective cube corner article and Machining techniques for retroreflective cube corner article and

1996-09-24

2000-06-27

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Reshaping or treatment of an optical preform

264 19, 264138, 264162, 359529, 359530, 359535, B29D 1100, G02B 5122, B24B 100

Patent

active

060803401

ABSTRACT:
A method of machining a substrate to produce a cube corner element optical array. The method includes steps of directly machining a plurality of groove sets into a directly machinable substrate to form an array having a plurality of geometric structures including cube corner elements, and machining at least two of the groove sets along the same path in the substrate but at different depths of groove to produce a geometric structure side surface having both an optical portion and a non-optical portion.

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