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
Agent for expelling parasites in humans, animals or birds
Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
Method and apparatus for information exchange over a web based environment
Device to control force required to depress accelerator pedal
Semiconductor device
Printing apparatus having extendable functionality and method thereof
Female urine funnel
  Randomly Featured Patents
Validating one or more circuits using one of more grids
Variable optical attenuator systems
Drill string make-up and break-out mechanism
Catalytic nucleic acid and methods of use
Earthquake-proof absorption system for buildings or the like
Cargo carrier
Waste receptacle
Optical disc cartridge
Fingernail extension
Tobacco harvester and method