Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Takahashi; Toyokazu
Address:
Tokyo, JP
No. of patents:
2
Patents:












Patent Number Title Of Patent Date Issued
8125876 Objective lens, optical pickup apparatus using the same, optical recording/reproduction apparatu February 28, 2012
Provided is an objective lens for which expressions 0.83<(p.sub.M/p.sub.L)<1.17 and 0.83<(p.sub.M/p.sub.T)<1.17 or expressions 0.80<(p.sub.M/p.sub.L)<1.20 and 0.86<(p.sub.M/p.sub.T)<1.14 are satisfied, where p.sub.L is the ratio of fifth-order spherical aberra
7826328 Optical pickup device and optical disk apparatus using the same November 2, 2010
An optical pickup device includes: a light source that emits a light beam; a divergence-angle converting lens that converts an angle of divergence of the light beam emitted from the light source and emits the light beam; and an object lens displaceable in a tracking direction that receiv










 
 
  Recently Added Patents
Security arrangements for extended USB protocol stack of a USB host system
Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation
Feature management of a communication device
Buckle
Vehicle speed verification system and method
Mixture, especially spinning solution
Protein purification
  Randomly Featured Patents
Image forming process
Oven
Method and apparatus for injection blow molding an article with improved detail definition
Soluble variants of type I membrane proteins, and methods of using them
Nifedipine compositions and the production thereof
Efficient decoding of spatially-multiplexed signals
Heat exchange tube having multiple fluid paths
Methods, apparatus and computer programs for data communication efficiency
Method for detecting and quantifying endogenous wheat DNA sequence
Adhesive connection of a body having a base plate with a ski