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
High-density fiber optic modules and module housings and related equipment
Stable liquid VEGF antagonist formulations
Pattern transfer apparatus and method for fabricating semiconductor device
Methods and systems for determining the reliability of transaction
System and method for judging success or failure of work of robot
Can seam inspection
Switching device and electronic apparatus using the same
  Randomly Featured Patents
Winding and time-setting control device for a timepiece movement
Process for drying difluoromethane
Mobile dispensing display, method for conversion of shopping cart into dispensing display and method of advertising and dispensing products
Centrifugal pump
Electro optical modulation system
Saw blade
Method for improving the production of photographic reprints
Bottle
Passenger flow monitoring method and system
Lamp device and assembly