Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including plural heating steps
Patent
1983-12-20
1987-08-04
Sikes, William L.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including plural heating steps
350 9610, 350 9634, 350319, 350320, 264 11, 264 19, 264 17, 156644, 156645, G02B 610, B29D 1100, B23P 1500
Patent
active
046842063
ABSTRACT:
This light waveguide consists of an optically transparent body cut at one end to a sharp tip and polished optically flat at the other end. A metallization layer on its surface is thick enough to be opaque. By pressing the waveguide against a rigid plate the metallization is plastically deformed so as to expose a tiny aperture at the tip of the body through which light can pass. By carefully controlling the deformation of the metallization the diameter of the aperture can be kept between 10 and 500 nm. The waveguide can be incorporated in a semiconductor laser of a read/write head used in an optical storage device.
REFERENCES:
patent: 3235672 (1966-02-01), Beguin
patent: 3237012 (1966-02-01), Treffeisen
patent: 3244776 (1966-04-01), Sheldon
patent: 4395775 (1983-07-01), Roberts et al.
patent: 4520485 (1985-05-01), Sugino et al.
patent: 4604520 (1986-08-01), Pohl
Fitzgerald, "Self-Image and Enlarging Lens" IBM Tech. Discl. Bull., vol. 18, No. 12, May 1976, p. 4174.
Bednorz Johannes G.
Denk Winfried
Lanz Martin
Pohl Wolfgang D.
Healy Brian M.
International Business Machines - Corporation
Sikes William L.
Stanland Jackson E.
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