Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Delay lines, amplifier systems, transconductance compensating systems and methods of compensating
Circuit arrangement for a piezo transformer, and method therefor
Liquid dispensing apparatus
System and method for providing radio communication in a land mobile radio system
Multiplexing channels by a medium access controller
Print control server, print controlling method, and print control program
Methods for forming patterned structures
  Randomly Featured Patents
Power transmission
Wheel rim
Halogenated alkenyl isocyanurate compounds
Fluorogenic and chromogenic .beta.-lactamase substrates
Wideband "Y" Junction isolator/circulator at v-band
Inductor component containing permanent magnet for magnetic bias and method of manufacturing the same
Fiber optic polarizer
Image pickup device and method, image pickup system, image information providing device and method, video data processing device and method, and transmission medium
O-ethyl-S-propyl-S-benzyl-phosphorodithiolates
Copying apparatus