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
Using storage cells to perform computation
Integrated circuit packaging system with heat slug and method of manufacture thereof
Double diffused metal oxide semiconductor device and manufacturing method thereof
Hydrogen generation device and fuel cell system
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
Control method of LPI lamp for LPI vehicle and logic therefor
Auto-aligning spectroscopy system
  Randomly Featured Patents
Road system
Apparatus for manufacturing rollable sheet from metal melts
Isolated and modified porcine cerebral cortical cells
Laundry appliance
Printed circuit board arrangement
Differential video image compression in holographic media
Semiconductor light-emitting device
Helmet themed single dispenser
Process for producing solid electrolyte primary cell
Photoelectrochemical cell and energy system using the same