Optical head

Details Optical head Optical head

1987-04-09

1988-06-28

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Read only detector using light for reading magnetically...

G11B 532

Patent

active

047543558

ABSTRACT:
An optical head for a magneto-optical disk, including a diaphragm for cutting at least an outer portion of a bundle of rays, which is provided in the course of an optical system of a signal detecting portion.

REFERENCES:
patent: RE26952 (1970-09-01), Baaba et al.
patent: 3480933 (1969-11-01), Treves
patent: 3739362 (1973-06-01), Eschelbach

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