Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical equipment with device for detecting direction of visual axis










Image Number 16 for United States Patent #5485241.

An optical apparatus with a visual axis detecting device for converting the light reflected from the eyeball into an electrical signal and calculating the direction of visual axis from the electrical signal.Plural pairs of illuminating light sources are provided around the view finder, and one of the pairs is turned on to illuminate the eyeball, according to the output of a position detector detecting whether the optical apparatus is in a vertical or horizontal position, or of a distance detecting circuit for detecting the distance between the view finder and the eyeball, or of a judging circuit for judging whether the photographer wears spectacles or not, thereby enabling precise detection of the direction of visual axis.








 
 
  Recently Added Patents
Stool
Method for treating wounds for mammals, wound healer compound, and method of manufacturing thereof
Magnetic disk and manufacturing method thereof
ESD protection device and method for producing the same
Veronica plant named `Amethyst Plume`
Separate matching models based on type of phone associated with a caller
Method and apparatus for controlled reoxygenation
  Randomly Featured Patents
Method of deposition profile simulation
Apparatus for displaying the interactions between magnetic fields
Rendition-based graphical layout management
Object detecting device, imaging apparatus, object detecting method, and program
Program time guide
Image processing apparatus, workflow testing method and workflow testing program
Boot with outside preformed stress relief
Computer-readable recording medium for recording photograph print ordering information
Two sensor for over-current protection and current sensing configuration motor control
Tape cassette loading apparatus