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
Method and apparatus for generating a model for an electronic prognostics system
Low-complexity q-ary LDPC decoder
Server
Conference recap and recording
Maize hybrid X18C111
Adaptive current regulation for solid state lighting
Encoding method, encoding apparatus, decoding method, decoding apparatus, and system
  Randomly Featured Patents
Movie advertising placement optimization based on behavior and content analysis
Knitting machine yarn guiding device and its method of manufacture
Adjustable base unit for angularly adjusting mounting disposition of silo fill tube
Electrochemical cell
Selective filter having linear phase
Windable storage reel
Finished mass terminated end for a miniature coaxial ribbon cable and method of producing same
Process for treatment of lateritic ores
Sequencing system and method of use
Fabrics for heart valve and vascular prostheses and methods of fabricating same