Pickup for an optical system including a blazed hologram for div

Details Pickup for an optical system including a blazed hologram for div Pickup for an optical system including a blazed hologram for div

1997-12-23

2000-07-11

Tran, Thang V.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

G11B 700

Patent

active

060883103

ABSTRACT:
A pickup for a recording and reproducing system has a hologram for dividing a laser beam from a laser diode into a main beam and a plurality of sub-beams. The hologram is provided to locate the sub-beams at positions rearward with respect to a scanning direction of the main beam.

REFERENCES:
patent: 5239529 (1993-08-01), Tobita et al.
patent: 5267226 (1993-11-01), Matsuoka et al.
patent: 5457670 (1995-10-01), Maeda et al.

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