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US 2012/0075980 A1Published application
High-resolution read head for an optical disk
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsMarieke Laporte-Richard, Mickael Brun
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Abstract
The instant disclosure relates to a high resolution read head for an optical disk, including a monochromatic laser source; a radial polarization polarizer; an annular diaphragm that is opaque at the center and periphery thereof; an optical system for shaping the beam; and a light-concentrating microcomponent including a hemispherical lens, at the focal point of which a nanowire is arranged, and which is orthogonal to the plane of said lens, said nanowire being capped with a metal half-bead.
Claims8
A high-resolution pick-up for an optical disk, comprising:
- a monochromatic laser source;
- a polarizer of radial polarization;
- an annular diaphragm opaque at the center and at the periphery;
- an optical beam forming system;
- and
- an optical concentration microcomponent comprising a hemispherical lens having a nanowire, orthogonal to the plane of this lens, arranged at its focus, this nanowire being topped with a metal half-ball.
3 more elements
Dependencies are inferred from the claim text.