Optical pickup, manufacturing method thereof, and optical...

Details Optical pickup, manufacturing method thereof, and optical... Optical pickup, manufacturing method thereof, and optical...

2008-06-17

2008-06-17

Psitos, Aristotelis M (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S121000

Reexamination Certificate

active

07388823

ABSTRACT:
An optical pickup for reading information written on an optical disk is equipped with a vertical multi-mode converted laser diode which emits light, means for focusing the emitted light from the laser diode onto the optical disk, and means for receiving reflected light from the optical disk in order to read the information written on the optical disk, wherein the coherent distance of the emitted light from the laser diode is made shorter than the optical path length of the optical pickup.

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Electronics Letters, vol. 20, No. 20, pp. 821-822.

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