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
Stool
Color stable manganese-doped phosphors
Nut
Digital display devices and digital projectors with expanded color gamut
Circuit arrangement having a load transistor and a voltage limiting circuit and method for driving a load transistor
Bipolar transistor with diffused layer between deep trench sidewall and collector diffused layer
Communicating channel state information using predictive vector quantization
  Randomly Featured Patents
Tomographic processing method with a small number of projections of a contrasted object
Process for preparing new amidine compounds
Transmitter/receiver having an antenna failure detection system
Tapered propeller blade design
Beauty salon chair with extended curved arms
Process for preparing powder metal parts with dynamic properties
Apparatus and technique for determining placement of optical components in optical communication applications
Digital receiver with minimum cost index register
Design pattern data preparing method, mask pattern data preparing method, mask manufacturing method, semiconductor device manufacturing method, and program recording medium
Method and circuit for codes generation