Optical pickup system having an integrated twin focusing beam sp

Details Optical pickup system having an integrated twin focusing beam sp Optical pickup system having an integrated twin focusing beam sp

1996-11-26

1998-06-16

Huber, Paul W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

385 14, 385129, G11B 700, G02B 612

Patent

active

057682445

ABSTRACT:
An integrated optical pickup system for reproducing an information signal stored on a recording surface of an optical disk is comprised of a first optical glass substrate, integrated with a semiconductor laser, a reflection collimating lens, a transmission off axis diffractive object lens and a reflection layer, for impinging a converged light beam onto the optical disk and collimating the converged light beam after being reflected from the recording surface and a second glass substrate, integrated therein with a twin focusing beam splitter and a photo detector, for guiding the collimated light beam from the first glass substrate to the photo detector, thereby allowing the integrated optical pickup system to reproduce the information signal off the recording surface of the optical disk.

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