Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
June 19, 2007
Patent Application Number
10663867
Date Filed
September 16, 2003
Patent Primary Examiner
Patent abstract
A focus search control unit for outputting an order to move an objective lens to the vicinity of a targeted position is provided with a trajectory generating unit for generating a position trajectory to move the objective lens such that the objective lens approaches the targeted position gradually. The position trajectory output from the trajectory generating unit is a position trajectory with which resonance frequency components that the lens moving unit has are removed or attenuated by making smooth the variation of acceleration of the objective lens moved by the lens moving unit. The position trajectory is defined by, for example, a function of third order or higher with respect to time.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
