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
Data processor with virtual machine management
Device and implantation system for electrical stimulation of biological systems
Imaging device
Semiconductor apparatus
Mobile terminal and method for displaying information
Flash memory apparatus and method for generating read voltage thereof
Hand sign
  Randomly Featured Patents
Molded plastic enclosure for disconnect switches
Low density parity check (LDPC) coding for a 32k mode interleaver in a digital video broadcasting (DVB) standard
Method of cleaning plastics using super and subcritical media
Liquid ink for printers
Optical fiber connector
Polymer for data storage, data storage media coated by the same, data storage device and method using data storage media
Mobile phone and credit card carrying case
Digital video copy protection system
Coiled tubing/top drive rig and method
Shower panel