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
Stable aqueous composite compositions
Information distribution system, information distributing method, node, and recording medium
Method for automatically estimating inertia in a mechanical system
Oxidative coupling of hydrocarbons as heat source
Acceleration based mode switch
Organic semiconductor compound, semiconductor device, solar cell and producing method of organic semiconductor compound
Methods, systems, and media for swapping faces in images
  Randomly Featured Patents
Minimal bubble voltage regulator
Apparatus and method for drying or curing web materials and coatings
Date data computer
Pouring spout or similar article
Anhydroretinol and derivatives thereof as antagonists of immune responses and inhibitors of cancer cell growth
Ear tag for marking animals with organic substance sampling system
Slab shaped building components and method of forming same
Transponder detector
Reverse analogue of actinomycin D
Methods and apparatus for in-order delivery of data packets during handoff