Eye imaging with an off-axis imager
First Claim
Patent Images
1. A display system comprising:
- an optical element configured to display an image to a user, the optical element configured to be positioned forward an eye of the user;
a forward-facing imager configured to be mounted rearward the eye of the user and configured to provide a depth of field, for imaging an eye region of the user, that is approximately twice as large as a backward-facing imager; and
a reflective element disposed in or on the optical element, the reflective element configured to reflect toward the forward-facing imager infrared light received from the eye of the user.
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Abstract
Examples of an imaging system for use with a head mounted display (HMD) are disclosed. The imaging system can include a forward-facing imaging camera and a surface of a display of the HMD can include an off-axis diffractive optical element (DOE) or hot mirror configured to reflect light to the imaging camera. The DOE or hot mirror can be segmented. The imaging system can be used for eye tracking, biometric identification, multiscopic reconstruction of the three-dimensional shape of the eye, etc.
78 Citations
16 Claims
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1. A display system comprising:
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an optical element configured to display an image to a user, the optical element configured to be positioned forward an eye of the user; a forward-facing imager configured to be mounted rearward the eye of the user and configured to provide a depth of field, for imaging an eye region of the user, that is approximately twice as large as a backward-facing imager; and a reflective element disposed in or on the optical element, the reflective element configured to reflect toward the forward-facing imager infrared light received from the eye of the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification