Device and unit for correcting aberration of light beam

Details Device and unit for correcting aberration of light beam Device and unit for correcting aberration of light beam

2006-10-24

2006-10-24

Patel, Gautam R. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S044320

Reexamination Certificate

active

07126901

ABSTRACT:
An aberration correcting unit is provided for correcting an aberration of a light beam radiated onto an object to be detected and then reflected from the object. This unit comprises an aberration correcting device comprising a first corrector configured to correct the aberration of the light beam radiated onto the object; and a second corrector configured to correct the aberration of the light beam reflected from the object and to divide the reflected light beam into a plurality of light beams. The aberration correcting unit further comprises a first driver configured to drive the first corrector and a second driver configured to drive the second corrector.

REFERENCES:
patent: 6859429 (2005-02-01), Ogasawara et al.
patent: 7020055 (2006-03-01), Kim et al.
patent: 09-128785 (1997-05-01), None

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