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
Display fixture for highlighting products
Detachably integrated battery charger for mobile cell phones and like devices
Process for preparing substituted aromatic carboxylic acids
Methods of saccharification of polysaccharides in plants
Fail-safe upgrading of portable electronic device software
Electric rotating machine for vehicle
Asynchronous line interface rate adaptation to the physical layer with synchronous lines at the connection layer
  Randomly Featured Patents
Promoter and plasmid system for genetic engineering
Device for dispensing a seasoning
Method and apparatus for making frozen food article
Methods and apparatus for efficiently managing the storage of e-mail message information for a mobile station
Alkadiene/vinylaromatic copolymers containing side groups, and their use
Protective tape applying and separating method
Ratchet tool having a ratchet direction positioning device
Downhill slide system
Parting fixture for removal of a substrate from a mandrel
Electronic component mounting apparatus