Optical read/write head with low angle beam splitter and coplana

Details Optical read/write head with low angle beam splitter and coplana Optical read/write head with low angle beam splitter and coplana

1995-06-22

1997-03-25

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 4423, 369 4438, 369112, G11B 1100, G11B 700

Patent

active

056151810

ABSTRACT:
An optical read/write head for a magnetic-optic recording and reproducing unit having a beam splitter placed between a collimator lens and an objective lens. The optical path of the beam reflected by a recording disk is bent by the beam splitter and the beam strikes a polarizing beam splitter. The polarizing beam splitter splits the reflected beam into P and S polarized components whose optical axes form n angel of less than 90.degree.. The rays of the P and S polarized components strike respective light detecting elements and which are co-arranged on substantially the same surface.

REFERENCES:
patent: 5161139 (1992-11-01), Inoue et al.
patent: 5231620 (1993-07-01), Ohuchida
patent: 5444677 (1995-08-01), Hosokawa et al.

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