Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Hologram device, tilt detection method, and tilt correction method










Image Number 14 for United States Patent #8121010.

A hologram device includes: a light source for applying light to a hologram recording medium having a recording layer in which information recording is performed by interference fringes between signal light and reference light; a spatial modulation unit that generates the signal light and/or the reference light and generates a marker light in a predetermined position within an incident surface of the light from the light source by performing spatial light modulation on the light from the light source; a light applying unit that applies the light subjected to spatial light modulation by the spatial light modulation unit to the hologram recording medium via an objective lens; a light receiving unit that receives the light applied via the objective lens through the hologram recording medium; and a tilt detection unit that obtains a tilt error signal representing an error from an ideal angle of a tilt angle as an incident angle of the applied light via the objective lens to an information recording surface of the hologram recording medium based on a result of detection of an error between an ideal light reception position of the marker light in the light receiving unit and a real light reception position of the marker light by the light receiving unit.








 
 
  Recently Added Patents
Synchronization of communication equipment
Rear bumper for an automobile
Health monitoring of applications in a guest partition
Power supply input voltage detection circuit
Thermoplastic fluoropolymer composition
Optical angular position detection apparatus and method
Dynamic lookup service in a distributed system
  Randomly Featured Patents
Package
Hanging organizer
Dimeric molecular complexes
Image-forming machine with toner recycling and toner replenish control
Pole unit mechanism for closing the contacts in an oil circuit breaker
System and method for pre-processing ionization signal to include enhanced knock information
Pulley
Electroconductive polymer composition
Inks-and-printing-media-integral-type pack, printing liquid and sheets container, sheet supplying device, and printing apparatus comprising the same
Secreted viral proteins useful for vaccines and diagnostics