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
Protein kinase C inhibitors and uses thereof
Integrated emergency medical database system
High power fiber amplifier with stable output
Scanning optical positioning system with spatially triangulating receivers
System, method, and software for researching, analyzing and comparing expert witnesses
Case for camera
Particle-loaded membrane for solid-phase-extraction and method for performing SALDI-MS analysis of an analyte
  Randomly Featured Patents
Weather strip for motor vehicle
Height adjusting device for automotive seat
Glass-polycarbonate laminate
Vitamin A palmitate composition and methodology for repairing and rejuvenating human skin
Endoscopic stapling devices and methods
System and method of reducing pulverizer flammability hazard and boiler nitrous oxide output
Valve having metal-to metal dynamic seating for controlling the flow of gas for making semiconductors
Anti-theft device with alarm screening
Controller and method of controlling a hydraulic control network with latching valve
Audio plug connector