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
Fabricated leaf tea products
Field of view matching in a visual prosthesis
Systems and methods for excluding undesirable network transactions
Buckle (tube)
Method for controlled layer transfer
Soybean cultivar CL1013663
Display apparatus, control method thereof, and program
  Randomly Featured Patents
ESD protection structures on SOI substrates
Speech recognition using thresholded speaker class model selection or model adaptation
Damper device
Ullmann reaction for the synthesis of diaryl ethers
Motor controller for a dental handpiece
Easy-to-unfold folded absorbent garment with distal edges of the front and back waist regions folded along respective longitudinal fold lines
Semiconductor device having an improved interconnection and method for fabricating the same
Top-pan balance with an overload safety mechanism and a corner load sensor
Gas lighter
Battery charging method and device thereof