Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Object lens for an infinite-type optical pickup, optical pickup and optical information processing device










Image Number 11 for United States Patent #7274646.

As an object lens for an optical pickup, applied is a single-lens and both-side-convex configuration is applied. Further, specific conditional formulas are created with respect to a particular numerical aperture NA, for a paraxial curvature radius R1 on the surface on the light source side; the working distance WD, the refractive index nd with respect to the d-line, and the focal length f. Furthermore, specific conditional formulas are created for the refractive index nd with respect to the d-line and the Abbe's number .nu.d.








 
 
  Recently Added Patents
Fluid dispenser member
Modular furniture system
Method and apparatus for the determination of a repetitive bit value pattern
System and method for automatically authoring interactive television content
Method, and system for a re-configurable optical multiplexer, demultiplexer and optical add-drop multiplexer
Derivation of embryonic stem cells
Method for image registration utilizing particle swarm optimization
  Randomly Featured Patents
Antigen modified cancer cell vaccines for cancer therapy
Safety shield system for prefilled syringes
Method and apparatus for flowing sterile ultra-thin fluid membranes
Steering wheel protection device
Mask positioning carriage assembly
Miniaturized multi-gas and vapor sensor devices and associated methods of fabrication
Less than full aperture high resolution phase process for terrain elevation estimation
Control method for powertrain of hybrid vehicle in compound split mode
Apparatus and method for branching signal for mobile terminal
Method for manufacturing hollow composite structure