Resources Contact Us Home
Optical pickup device

Image Number 4 for United States Patent #7751299.

There is provided an inexpensive optical pickup device that is capable of accurately detecting light quantities of output laser beams on occasion of at least either of reproduction and recording on an information recording medium. A beam from a first light source 1 which beam does not pass through a wavelength selection film 6 of a light separation element 7 is reflected by a first reflection film 10 in a direction to an optical monitor 5. A beam from a second light source 2 which beam does not pass through the wavelength selection film 6 of the light separation element 7 is reflected by a second reflection film 11 in a direction to the optical monitor 5.

  Recently Added Patents
Horizontal cable manager
Methods and systems for automated segmentation of dense cell populations
Identifying a characteristic of an individual utilizing facial recognition and providing a display for the individual
Plants and seeds of corn variety CV778791
Nitride semiconductor laser device
Distributive data capture
  Randomly Featured Patents
Image data reproduction method
Arrangement for inhibiting range shifting in a transmission
Method and system for communicating feedback information in a multiple user multiple input multiple output (MU-MIMO) communication system
Parallel selection processing for financial processing in a relational database management system
Imaged elastic retaining band
Transmission apparatus, transmission method, content delivery system, content delivery method, and program
Leak detection band
Vector floating point unit
Controller and portable electronic apparatus
Unsaturated aminodicarboxylic acid derivatives