Resources Contact Us Home
Optical disk driving apparatus, optical disk driving system, vehicle equipped with optical disk driving system, method of correcting spherical aberration in optical disk driving apparatus, pro

Image Number 3 for United States Patent #8130603.

An optical disk driving apparatus includes an optical head device having a laser light source, a converging optical system converging a light beam emitted by the laser light source onto an optical disk, a photo detector receiving reflected light reflected by the optical disk, and an aberration correcting optical system controlling aberration of the converging optical system; a motor rotating the optical disk; and a control section receiving a signal from the photo detector, wherein the converging optical system has an objective lens formed using resin as a main material, the aberration correcting optical system has a spherical aberration correcting element correcting spherical aberration, and the control section evaluates quality of a reproduction signal for information in the optical disk by using the reflected light received by the photo detector, and utilizes a result of the evaluation to perform closed loop control on the spherical aberration correcting element.

  Recently Added Patents
Data center management unit with protection against network isolation
Distance measurement
Computer system and configuration management method therefor
Ion trap type mass spectrometer and mass spectrometry
Method and apparatus for color conversion based on LCH color space, and liquid crystal display device
Allowing conversion of one digital rights management scheme to another
Fan guide
  Randomly Featured Patents
Metering apparatus
Easy pull ring for pop-top and pull-top cans
Process for the manufacture of acylation products of phosphorous acid
Lawn mower having a dual discharge system
Systems and methods for protecting a series capacitor bank
Dynamo-electric cycle axle
Field rephaseable modular metering devices
Casket having memorabilia compartment
Diagnostic medical ultrasound system having method and apparatus for storing and retrieving 3D and 4D data sets
Television visual artwork generation system and method