Optical head apparatus for optical disks

Details Optical head apparatus for optical disks Optical head apparatus for optical disks

1989-07-10

1991-07-16

Envall, Jr., Roy N.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369112, 369 32, G11B 700, G11B 1722

Patent

active

050330438

ABSTRACT:
An optical head apparatus for optical disks has a recording and reading laser beam generator and a wavelength reducer including reducing the wavelength of light from the laser generator. The laser beam generator is a separate unit from the head slider portion, the two being connected by an optical fiber which is used to transmit the recording and reading laser light to the slider. This arrangement enables short-wavelength laser light below 550 nm to be used for writing and reading operations without increasing the weight of the slider, thereby offering high-speed access and high recording densities.

REFERENCES:
patent: 4771415 (1988-09-01), Taki

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