Optical reading apparatus capable of correcting aberration

Details Optical reading apparatus capable of correcting aberration Optical reading apparatus capable of correcting aberration

2006-03-30

2009-06-09

Edun, Muhammad N. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112220, C369S112230, C369S044230

Reexamination Certificate

active

07545725

ABSTRACT:
An optical reading apparatus with aberration-correcting functionality includes a light source, a lens, a liquid crystal layer and an electrode set. The light source of the optical reading apparatus emits light, which is converged onto a storing medium by the lens for accessing data stored in the storage medium. The liquid crystal layer is disposed in an optical path between the light source and the storage medium. The electrode set provides a variable electrical field across the liquid crystal layer for changing the refractive index of the liquid crystal layer. Aberration of the optical reading apparatus can thus be corrected.

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