Plastic optical transmission medium, process for producing the s

Details Plastic optical transmission medium, process for producing the s Plastic optical transmission medium, process for producing the s

1987-03-27

1989-01-24

Lee, John D.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Including plural heating steps

264 11, 350 9618, 350 9634, 350413, G02B 618

Patent

active

047997613

ABSTRACT:
A plastic optical transmission element having a body in which the refractive index varies continuously in a radial direction from the interior toward the surface of the body, may be free from the troubles derived from irregularity of the index distribution and flare by having a layer containing a light-absorbing substance under the surface thereof. Such a layer may be formed by contacting an untreated element with a solvent containing the light absorbing substance, when the solvent is selected so as to be capable of at least partially dissolving the plastic of the element.

REFERENCES:
patent: 3658407 (1972-04-01), Kitano et al.
patent: 4167305 (1979-09-01), Ichiba et al.
patent: 4327965 (1982-05-01), Black
patent: 4482204 (1984-11-01), Blyler, Jr. et al.
patent: 4593973 (1986-06-01), Yoshida et al.
patent: 4615583 (1986-10-01), Tsuno et al.
patent: 4647153 (1987-03-01), Utsumi et al.
Appel, "Method of Assembling A Gradient Index Lens Array", Xerox Disclosure Journal, vol. 6, No. 2, Mar./Apr. 1981, p. 69.

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