Hmd apparatus with adjustable eye tracking device

Abstract

Provided is a head-mounted display apparatus that includes an imaging optical system and a camera holder. The imaging optical system includes a display unit, an eye camera, and a control device. The display unit is to be viewed by an eye of a user, and the control device is to acquire a viewing direction of the eye within a field of view of the display unit using eye camera, wherein the field of view has a viewing central axis. The camera holder is to receive the eye camera, wherein the camera holder is selectively adjustable in relationship to the display unit to align the eye camera to the eye of the user in terms of a peripheral angle (δ) around a viewing central axis and in terms of a setting angle (α) with respect to the viewing central axis.

1 . A head-mounted display apparatus comprising:
 an imaging optical system comprising a display unit, an eye camera, and a control device, the display unit to be viewed by an eye of a user, and the control device to acquire a viewing direction of the eye within a field of view of the display unit using the eye camera, the field of view having a viewing central axis; and   a camera holder to receive the eye camera, the camera holder being selectively adjustable in relationship to the display unit to align the eye camera to the eye of the user in terms of a peripheral angle (δ) around the viewing central axis and in terms of a setting angle (α) with respect to the viewing central axis.   
     
     
         2 . The head-mounted display apparatus according to  claim 1 , wherein the apparatus comprises a peripheral position ring that surrounds the field of view, the peripheral position ring allowing movement of the camera holder along the peripheral position ring to adjust the alignment of eye camera in a peripheral direction around the viewing central axis. 
     
     
         3 . The head-mounted display apparatus according to  claim 2 , wherein the camera holder is manually adjustable along at least one section of the peripheral position ring. 
     
     
         4 . The head-mounted display apparatus according to  claim 3 , wherein the camera holder is manually adjustable in discrete notch steps. 
     
     
         5 . The head-mounted display apparatus according to  claim 2 , wherein the camera holder is continuously adjustable. 
     
     
         6 . The head-mounted display apparatus according to  claim 2 , wherein the apparatus comprises a setting angle unit to mount the camera holder, the setting angle unit allowing movement of the eye camera in a plane including the viewing central axis. 
     
     
         7 . The head-mounted display apparatus according to  claim 6 , wherein the setting angle unit is manually adjustable in discrete notch steps. 
     
     
         8 . The head-mounted display apparatus according to  claim 6 , wherein the setting angle unit is continuously adjustable. 
     
     
         9 . The head-mounted display apparatus according to  claim 2 , wherein the apparatus comprises a set of setting angle units for different setting angles, wherein the camera holder is mountable detachably on a selectable setting angle unit, and the selectable setting angle unit is mountable detachably on the peripheral position ring. 
     
     
         10 . The head-mounted display apparatus according to  claim 1 , wherein the control device is to evaluate an eye image recorded by the eye camera and to determine correction values that are settable, the control device further to send the correction values as signals. 
     
     
         11 . The head-mounted display apparatus according to  claim 10 , wherein the apparatus comprises a setting angle setting apparatus to adjust the eye camera by using the setting angle unit, the control device further to evaluate an eye image recorded by the eye camera and to set the setting angle setting apparatus based on the evaluation. 
     
     
         12 . The head-mounted display apparatus according to  claim 1 , wherein the apparatus comprises at least one illumination unit to illuminate the eye with infrared light for the eye camera. 
     
     
         13 . An adjustment apparatus for a head-mounted display apparatus, the head-mounted display apparatus comprising an imaging optical system for an eye of a user, the imaging optical system comprising a display unit to be viewed by the eye, the adjustment apparatus comprising:
 an eye camera to acquire an eye image for acquisition of a viewing direction of the eye within a field of view of the display unit, the field of view having a viewing central axis; and   a camera holder to receive the eye camera, the camera holder being selectively adjustable in relationship to the display unit to align the eye camera to the eye of the user in terms of a peripheral angle (δ) around a viewing central axis and in terms of a setting angle (α) with respect to the viewing central axis.   
     
     
         14 . The adjustment apparatus according to  claim 13 , wherein the apparatus comprises a peripheral position ring that surrounds the field of view, the peripheral position ring allowing movement of the camera holder along the peripheral position ring to adjust the alignment of eye camera in a peripheral direction around the viewing central axis. 
     
     
         15 . The adjustment apparatus according to  claim 14 , wherein the camera holder is manually adjustable along at least one section of the peripheral position ring. 
     
     
         16 . The adjustment apparatus according to  claim 15 , wherein the camera holder is manually adjustable in discrete notch steps. 
     
     
         17 . The adjustment apparatus according to  claim 14 , wherein the camera holder is continuously adjustable. 
     
     
         18 . The adjustment apparatus according to  claim 14 , wherein the apparatus comprises a setting angle unit to mount the camera holder, the setting angle unit allowing movement of the eye camera in a plane including the viewing central axis. 
     
     
         19 . The adjustment apparatus according to  claim 18 , wherein the setting angle unit is manually adjustable in discrete notch step. 
     
     
         20 . The adjustment apparatus according to  claim 18 , wherein the setting angle unit is continuously adjustable. 
     
     
         21 . The adjustment apparatus according to  claim 14 , wherein the apparatus comprises a set of setting angle units for different setting angles, wherein the camera holder is mountable detachably on a selectable setting angle unit, and the selectable setting angle unit is mountable detachably on the peripheral position ring. 
     
     
         22 . The adjustment apparatus according to  claim 13 , wherein the apparatus comprises at least one illumination unit to illuminate the eye with infrared light for the eye camera.