Optical pickup unit capable of reading signals recorded on diffe

Optical pickup unit having electro-optical element and...

Optical pickup unit, apparatus for recording/reproducing...

Optical pickup using a single light spot to generate...

Optical pickup using a wedge type beam splitter

Optical pickup using optically variable iris

Optical pickup utilizing nonvolatile memory and adjustment...

Optical pickup with a compact design

Optical pickup with a two-detector arrangement

Optical pickup with bilateral and vertical symmetry

Optical pickup with support part having hole for being...

Optical pickup with switchable optical systems along an...

Optical pickup, and optical disc player

Optical pickup, optical disc device and method for...

Optical pickup, optical disk drive, light detecting...

Optical pickup, optical recording and/or reproducing...

Optical position error detection using complementary steep angle

Optical read-write apparatus

Optical read/write apparatus with improved tracking performance

Optical reader for record carriers with different information de