Optical near-field scanning microscope

Details Optical near-field scanning microscope Optical near-field scanning microscope

1983-12-20

1986-08-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350319, H01J 314

Patent

active

046045201

ABSTRACT:
This optical near-field scanning microscope comprises an "objective" (aperture) attached to the conventional vertical adjustment appliance and consisting of an optically transparent crystal having a metal coating with an aperture at its tip with a diameter of less than one wavelength of the light used for illuminating the object. Connected to the aperture-far end of the "objective" is a photodetector via an optical filter and an optical fiber glass cable. Scanning the object is done by appropriately moving the support along x/y-coordinates. The resolution obtainable with this microscope is about 10 times that of state-of-the-art microscopes.

REFERENCES:
patent: 3558814 (1971-01-01), Engle
patent: 4070090 (1978-01-01), Farr et al.
patent: 4469411 (1984-09-01), Clegg

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