Production of optical element with a varying refractive index

Details Production of optical element with a varying refractive index Production of optical element with a varying refractive index

1983-11-25

1986-04-15

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Changing mold size or shape during molding or with shrinkage...

65 66, 65 83, 65 85, 264 11, 264 15, 264 27, B29D 1100

Patent

active

045826552

ABSTRACT:
An optical element, consisting essentially of an amorphous compound and having a varying refractive index, is prepared by introducing a melt of the material into a mold and cooling it in such a manner that the material gradually solidifies, while simultaneously applying a programmed pressure to the cooling melt. When the material is fully solidified, it possesses a refractive index gradient. An element manufactured by this method has a capacity for guiding and focusing light.

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Moore, "Gradient-Index Optics: A Review", Applied Optics, vol. 19, No. 7, 1035, Apr., 1980.
Greener and Kenyon, "Thermal Stresses in Amorphous Plastics", Presented at SPIE Symposium, Aug., 1981.

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