Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Optical disc playback apparatus performing defocus adjustment of objective lens

Optical disc playback apparatus performing defocus adjustment of objective lens

US Patent 7283438 · Granted Oct 16, 2007

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Wire-wound coil2012
Optical disc apparatus2007
Optical disk recording/reproducing apparatus2006