IMAGE DISPLAY DEVICE WITH EXIT PUPIL MOVING FOR TRACKING VIEWER'S PUPIL
First Claim
1. An image display device for optically displaying an image, comprising:
- a light source;
an imaging-light generator converting light emitted from the light source, into imaging light representative of the image to be displayed to a viewer, to thereby generate the imaging light; and
an exit-pupil controlling unit configured to control a position of an exit pupil of the image display device,wherein the exit-pupil controlling unit comprises;
an electrically controllable element configured to diffract the imaging light incoming from the imaging-light generator, at an electrically-variable diffraction angle; and
a controller configured to electrically control the diffraction angle of diffracted light emitted from the electrically controllable element, to thereby control the position of the exit pupil.
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Abstract
An image display device for optically displaying an image is disclosed. This device includes: a light source; an imaging-light generator converting light emitted from the light source, into imaging light representative of the image to be displayed to a viewer, to thereby generate the imaging light; and an exit-pupil controlling unit configured to control a position of an exit pupil of the image display device. The exit-pupil controlling unit includes: an electrically controllable element configured to diffract the imaging light incoming from the imaging-light generator, at an electrically-variable diffraction angle; and a controller configured to electrically control the diffraction angle of diffracted light emitted from the electrically controllable element, to thereby control the position of the exit pupil.
21 Citations
13 Claims
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1. An image display device for optically displaying an image, comprising:
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a light source; an imaging-light generator converting light emitted from the light source, into imaging light representative of the image to be displayed to a viewer, to thereby generate the imaging light; and an exit-pupil controlling unit configured to control a position of an exit pupil of the image display device, wherein the exit-pupil controlling unit comprises; an electrically controllable element configured to diffract the imaging light incoming from the imaging-light generator, at an electrically-variable diffraction angle; and a controller configured to electrically control the diffraction angle of diffracted light emitted from the electrically controllable element, to thereby control the position of the exit pupil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification