Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Computerized information and display apparatus
Method of creating a positive substance joint between components
Display screen or portion thereof with a graphical user interface
Alignment system, lithographic system and method
Statistical prioritization and detection of potential financial crime events
Audio amplifier
Image forming apparatus, method and medium for detecting blank pages
  Randomly Featured Patents
Ventilating device
Saw table with releasable locking device
Vapor rinse-vapor dry process tool
Capacitor assembly
Touch display panel, pixel structure and multi-sensing structure
Cooled mounting for light detector
Tape printing machine
System and method for verifying write performance during optical recording
Cooking apparatus and method therefor
Oil dipstick cleaning device