Method for the production of cylindrically symmetric bodies with

Details Method for the production of cylindrically symmetric bodies with Method for the production of cylindrically symmetric bodies with

1987-05-20

1991-01-22

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 18, 264 27, 264158, 264235, 264245, 264339, 65 311, 65 41, 65 42, 65 43, 65 315, 65 421, 65 31, B29C 5314, C03B 37025

Patent

active

049869396

ABSTRACT:
In a method for the production of cylindrically symmetric bodies with given radial gradient of the material properties, for example of the refractive index, at least two rod-shaped molded bodies consisting of materials with different properties are joined in parallel and, following lowering of the viscosity of both materials, the bodies are twisted many times in a spiral around a longitudinal axis, such that a desired radial gradient of the material properties arises, where metallic, semiconducting, or insulating materials may be used, and the viscosity is varied through changing the temperature or adding or removing a solvent.

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