Near-field optical probe

Details Near-field optical probe Near-field optical probe

2005-04-19

2005-04-19

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S306000

Reexamination Certificate

active

06881947

ABSTRACT:
The present invention has an object, in a near-field optical probe having a microscopic aperture to generate and/or scatter a near field, to obtain a near-field optical probe easy to be made in an array which increases the intensity of a near field to be generated and/or scattered and is adapted for use as an optical memory head.This near-field optical probe is arranged with a planar lens having microscopic lens on a flat surface substrate having an inverted conical or pyramidal hole formed therethrough such that its apex is made as the microscopic aperture, wherein a light source is further arranged thereon to introduce light to the planar lens. Because the arrangement is made such that the planar lens has a focal point positioned at the microscopic aperture, the light given by the light source can be efficiently collected to the microscopic aperture. Also, the above structure can be arrayed and mass produced using a silicon process, thus being adapted for use as an optical memory head.

REFERENCES:
patent: 5294790 (1994-03-01), Ohta et al.
patent: 6046972 (2000-04-01), Kuroda et al.
patent: 6215114 (2001-04-01), Yagi et al.

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