Information System and Method for Providing Information Using a Holographic Element

Abstract

An information system and a method for providing information in correlation with light that is incident on an eye includes a holographic element disposed in front of the eye and a device capable of recording optical signals which detects light that is incident on the eye via the holographic element. The device capable of recording optical signals detects light which is diffracted by the holographic element before the light impinges on the eye such that the diffracted light does not enter the eye.

What is claimed is: 
     
         1 .- 12 . (canceled) 
     
     
         13 . A head-mounted system, comprising:
 an optical device which detects light incident on an eye, wherein the optical device is configured to:
 project an infrared light onto the eye, 
 detect light reflected off the eye in response to the projected light, and 
 track an eye movement based on the detected reflected light; and 
   a holographic element by which light is projected into the eye to present a virtual object, wherein the light is projected based on the tracked movement.   
     
     
         14 . The head-mounted system of  claim 13 , further comprising a position sensor system to determine a position and orientation of the head-mounted system. 
     
     
         15 . The head-mounted system of  claim 13 , wherein the light is projected into the eye is characterized differently than a detected ambient light. 
     
     
         16 . The head-mounted system of  claim 13 , wherein the system further comprises a waveguide by which the light is projected into the eye. 
     
     
         17 . The head-mounted system of  claim 13 , wherein characteristics of the holographic element are electronically changeable. 
     
     
         18 . The head-mounted system of  claim 13 , further comprising:
 a second optical device which detects light incident on a second eye; and   a second holographic element by which light is projected into the second eye to present the virtual object.   
     
     
         19 . The head-mounted system of  claim 13 , further comprising a sensor system configured to obtain information from an environment based on transit time of light reflected back from the environment. 
     
     
         20 . The head-mounted system of  claim 13 , further comprising computer readable code to:
 obtain information from an environment by a sensor system based on transit time of light reflected back from the environment.   
     
     
         21 . A non-transitory computer readable medium comprising computer readable code executable by one or more processors to:
 project, by an optical device of a head-mounted device which detects light incident on an eye, an infrared light onto the eye,   detect light reflected off the eye in response to the projected light, and   track an eye movement based on the detected reflected light; and   present a virtual object by a holographic element by which light is projected into the eye, wherein the light is projected based on the tracked movement.   
     
     
         22 . The non-transitory computer readable medium of  claim 21 , further comprising computer readable code to determine a position and orientation of the head-mounted system based on output of a position sensor of the head-mounted device. 
     
     
         23 . The non-transitory computer readable medium of  claim 21 , wherein the light is projected into the eye is characterized differently than a detected ambient light. 
     
     
         24 . The non-transitory computer readable medium of  claim 21 , wherein the head-mounted device further comprises a waveguide by which the light is projected into the eye. 
     
     
         25 . The non-transitory computer readable medium of  claim 21 , wherein characteristics of the holographic element are electronically changeable. 
     
     
         26 . The non-transitory computer readable medium of  claim 21 , further comprising computer readable code to:
 detect light incident on a second eye by a second optical device; and   project light into the second eye to present the virtual object by a second holographic element.   
     
     
         27 . A method for presenting a virtual object, comprising:
 projecting, by an optical device of a head-mounted device which detects light incident on an eye, an infrared light onto the eye,   detecting light reflected off the eye in response to the projected light, and   tracking an eye movement based on the detected reflected light; and   presenting a virtual object by a holographic element by which light is projected into the eye, wherein the light is projected based on the tracked movement.   
     
     
         28 . The method of  claim 27 , further comprising determining a position and orientation of the head-mounted system based on output of a position sensor of the head-mounted device. 
     
     
         29 . The method of  claim 27 , wherein the light is projected into the eye is characterized differently than a detected ambient light. 
     
     
         30 . The method of  claim 27 , wherein the head-mounted device further comprises a waveguide by which the light is projected into the eye. 
     
     
         31 . The method of  claim 27 , wherein characteristics of the holographic element are electronically changeable. 
     
     
         32 . The method of  claim 27 , further comprising:
 detecting light incident on a second eye by a second optical device; and   projecting light into the second eye to present the virtual object by a second holographic element.