Retardation compensating light beam guiding system in an optical

Retarder and optical head device installing the same

Reversible optical storage medium and a method for recording inf

Rewritable data storage using carbonaceous material and...

RF Radial choke for use in record playback apparatus

Ridge waveguide with recess

Rodent repellent device of random working frequency

ROM type optical recording medium with a high reflectivity and a

Rotary actuator with a magnetic bias bearing configuration for r

Rotary head actuator for optical disk

Rotary optical system for guiding and converging divided light b

Rotational optical head for optical recording medium

Ruggedized homogeneous thin dielectric film focus sensor

Sample-and-hold interface circuit of a pickup head

Scanning apparatus for fluorescent multi-layer storage

Scanning apparatus with integrated beam separating and beam-spli

Scanning device for optical discs

Scanning head including a magneto-optical element and scanning d

Scanning near-field optical microscope using the probe and recor

Scanning probe microscope for observing a sample surface while a