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
Clothing fastener accessory
MEMS structure and method for making the same
Fluorine-free fused ring heteroaromatic photoacid generators and resist compositions containing the same
Bicycle shifting method
Automatic misalignment balancing scheme for multi-patterning technology
Mobile tablet information handling system support
Method and system for automatically identifying wireless signal quality of a region
  Randomly Featured Patents
Conductor identifying probe and voltage supply device
Digital audio disc player
Transport format combination selecting method, wireless communication system, and mobile station
Optical fiber cable
High energy treatment of cutter substrates having a wear resistant layer
Power factor control systems and methods
Sensor protector
Trainable hierarchical memory system and method
Hydraulic booster