Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Objective optical element with multiple diffractive surfaces and optical pickup device

Objective optical element with multiple diffractive surfaces and optical pickup device

US Patent 7440382 · Granted Oct 21, 2008

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Measurement method for non-destructive inspection, measurement device, non-destr2024
Objective lens and optical pickup apparatus2013
Objective lens and optical pickup apparatus2012
Optical pickup apparatus with objective optical system and guiding optical syste2011
Objective optical system, optical pickup apparatus and optical information recor2010
Optical element, optical objective element, and optical pickup apparatus having 2009
Objective optical element and optical pickup apparatus2009
Objective optical element and optical pickup apparatus2008
Optical pickup device and optical element used for the same2008
Optical pickup device and optical element used for the same2007
Objective lens and optical pickup device2006
Optical pickup apparatus, condensing optical system, and optical element2005