Method of forming a lens at the end of a light guide

Details Method of forming a lens at the end of a light guide Method of forming a lens at the end of a light guide

1977-11-21

1979-01-30

Bashore, S. Leon

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 37, 65DIG7, 350 9618, C03C 1500, C03B 1108, G02B 514

Patent

active

041370600

ABSTRACT:
The jacket of a cored light guide is completely or partially etched away; or, if the light guide is a gradient fiber guide, it is etched to about the light guiding diameter. A lens is then adhered to the end of the fiber, the lens being made of a material having a melting point which is low in relation to the melting point of the core material, to result in a light guide having an essentially semispherical lens at the end; adhesion may be effected by melting on a lens of lower melting point glass, or by making the lens of transparent epoxy, a drop of which can be cured on the light guide to form the lens.

REFERENCES:
patent: 1466973 (1923-09-01), Takanashi
patent: 3288585 (1966-11-01), Clarke
patent: 3492058 (1970-01-01), Waldman
patent: 3666347 (1972-05-01), Kitano et al.
patent: 3724924 (1973-04-01), Lenfant et al.
patent: 4067937 (1978-01-01), Unno et al.
O. Appl. Pay. vol. 44, No. 6, Jun. 1973, Light Coupling From a Stripe-Geometry GaAs Diode Laser 114 to an Optical Fiber with Spherical End.

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