Optical mass storage device, with data recording light-sensitive layer
OwnerAntoine Labeyrieinventor
Life of this patent
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Abstract
An optical mass storage device such as an optical disc is described, which includes a light-sensitive layer (1) with elementary cells distributed over its free recording surface (10), in which data is recorded. The device is characterised in that it includes, for each elementary cell, a light guide portion (3) which forms a single-mode optical fiber of a photorefractive material, substantially orthogonal to the free recording surface (10) A structure obtained by Lippmann effect, and formed of stacked individual periodic laminations having the same orientation as that of portion (3), is recorded in the fiber. The light-sensitive layer (1) is arranged on a transparent substrate (2).
Claims13
An optical memory medium, comprising a light-sensitive layer having elementary cells for recording information data which are distributed across a free recording face thereof, wherein each elementary cell of the light-sensitive layer consists of an optical guide rod operative as a monomode optical fiber directed with its axis substantially orthogonal to the free recording face.
An optical memory medium comprising a light-sensitive layer supported on a transparent substrate, said layer having elementary cells for recording information data, wherein each said elementary cell consists of an optical light guiding rod having a width of a micronic range thereby being operative as a monomode optical fiber, all rods constituting said cells extending through said light-sensitive layer with each having an axis substantially orthogonal to a free recording face of said layer over which said cells are transversally distributed according to a regular pitch.
Dependencies are inferred from the claim text.